Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Compressor-condenser-evaporator circuit

Subclass of:

062 - Refrigeration

062467000 - REFRIGERATION PRODUCER

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
062510000 Plural compressors or multiple effect compression 42
062506000 External cooling fluid contacts heat rejector 21
062500000 Jet powered by circuit fluid 21
062509000 Condensed liquid receiver, e.g., surge tank 11
062503000 With liquid trap or disperser in suction line 11
062502000 Diverse fluids 10
062511000 Fixed restrictor 3
20110247359EXPANSION VALVE WITH FORCE EQUALIZATION - An expansion valve (10-13-2011
20080236193Motor-operated selector valve and refrigeration cycle device for refrigerators - A motor-operated selector valve relating to refrigerating technology is provided. There are disadvantages, such as complicated assembly structure, big noise, vulnerability to interferences etc., in prior art. In the present invention, a slider is controlled by a stepper motor so as to be rotatablely displaced among four positions on a flat bottom surface of a valve seat. Three outlets on the flat bottom surface are communicated with a normal open inlet in the valve seat via flow-guiding orifices in the slider respectively. In the first working position, the first outlet and the third outlet are in communication with the normal open inlet at the same time; in the second working position, the second outlet is in communication with the normal open inlet; in the third working position, the third outlet is in communication with the normal open inlet; in the fourth working position, the first outlet is in communication with the normal open inlet. The technical solution employs the driving means of rotary displacement, thereby the action noise can be less than 30 dB (A) at a distance of 30 cm; and power supply can be cut off after the switch among the working states, as a stable working state can be ensured through the self-maintaining function of magnetic poles and the magnetic rotor of the stepper motor, as a result, energy consumption of the valve itself is reduced.10-02-2008
20080229781Flow Control - The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.09-25-2008
062505000 Cooling motor and/or compressor by refrigerant 2
20100170294INTEGRATED ELECTRIC COMPRESSOR - The object is to provide an integrated compressor that enables a control board to be miniaturized while ensuring a layout in which the heat radiation of parts is considered. Diodes 07-08-2010
20100307191METHOD AND SYSTEM FOR ROTOR COOLING - A motor coolant method and system is used to cool a compressor motor (12-09-2010
Entries
DocumentTitleDate
20090193844INLET GUIDE VANE, TURBO COMPRESSOR, AND REFRIGERATOR - An inlet guide vane is installed at a suction port into which a fluid is sucked by the rotation of an impeller so as to be rotatable about an axis, and is comprised of a rod-like shaft supported by an inner peripheral surface of the suction port so as to be rotatable about the axis, and a plate-like vane body connected to the shaft and provided so as to protrude from the inner peripheral surface of the suction port. The vane body includes a tapered portion formed such that both side surfaces approach each other toward an outer edge of the vane body in its width direction and an outer edge thereof at a tip in the direction of the axis, and a parallel portion arranged on the axis and formed such that both the side surfaces are parallel to each other along the direction of the axis.08-06-2009
20080250812Multi-Circuit Refrigerant System Utilizing Pulse Width Modulation Techniques - A multi-circuit refrigerant system incorporates at least one component provided with a pulse width modulation control. This component can be controlled to adjust the capacity provided by the circuit incorporating the component. In this manner, the pulse width modulation component can be controlled to exactly tailor the capacity of that circuit to provide a total desired combined cooling capacity of the multiple circuits within the multi-circuit system configurations. In one embodiment, only one circuit in a multi-circuit refrigerant system incorporates a pulse width modulation controlled component. In another embodiment, a plurality of circuits are provided with pulse width modulation controlled components.10-16-2008
20100031697MODULAR CO2 REFRIGERATION SYSTEM - A cascade CO2 refrigeration system includes a medium temperature loop for circulating a medium refrigerant and a low temperature loop for circulating a CO2 refrigerant. The medium temperature loop includes a heat exchanger having a first side and a second side. The first side evaporates the medium temperature refrigerant. The low temperature loop includes a discharge header for circulating the CO2 refrigerant through the second side of the heat exchanger to condense the CO2 refrigerant, a liquid-vapor separator collects liquid CO2 refrigerant and directs vapor CO2 refrigerant to the second side of the heat exchanger. A liquid CO2 supply header receives liquid CO2 refrigerant from the liquid-vapor separator. Medium temperature loads receive liquid CO2 refrigerant from the liquid supply header for use as a liquid coolant at a medium temperature. An expansion device expands liquid CO2 refrigerant from the liquid supply header into a low temperature liquid-vapor mixture for use by the low temperature loads.02-11-2010
20120159986Cooling System for Electric Vehicle - A cooling system for an electric vehicle, includes: a cooling-medium circulation passage through which a cooling medium circulates to travel to heat exchange target objects mounted in a vehicle that is electrically driven; an electric compressor disposed in the cooling-medium circulation passage to compress the cooling medium; and a heat exchange unit that achieves heat exchange between the cooling medium and outside air, wherein: the electric compressor is disposed at a position outside a primary outflow path through which the outside air, having undergone heat exchange at the heat exchange unit, flows from the heat exchange unit to outside the vehicle.06-28-2012
20100154468Air flow around blower resistor and at evaporator - A climate control system includes a compressor that circulates fluid between a condenser and an evaporator, an electric motor that drives a blower that includes a quantity of fan blades, and a duct fluidly coupling the blower and the evaporator. The blower forces air through the duct to the evaporator. A resistor is in electrical communication with the motor and has a quantity of fins extending into the passage of the duct. The duct may include a contoured wall that bulges outward and away from the resistor fins to enlarge a volume of the duct adjacent or beside the quantity of fins to allow a first portion of the air from the blower to flow around the fins while a second portion of the air cools the fins.06-24-2010
20090193843TURBO COMPRESSOR AND REFRIGERATOR - A turbo compressor has a plurality of stages of compression means, each including an impeller and a diffuser, arranged in tandem with the flow of a fluid, and is capable of compressing the fluid sequentially in a plurality of the compression means and supplying the fluid compressed in the compression means in a final stage to a condenser. The diffuser of at least the compression means in the final stage is a vaneless diffuser which does not include diffuser vanes which reduce the turning speed of the fluid in the diffuser. As such, according to this turbo compressor, it is possible to reduce generation of noise resulting from the transmission of turbulence of the fluid to the condenser, which occurs as the refrigerant collides against the diffuser vane.08-06-2009
20090193841TURBO COMPRESSOR AND REFRIGERATOR - A turbo compressor including: 08-06-2009
20100083693VARIABLE SPEED DRIVE WITH PULSE-WIDTH MODULATED SPEED CONTROL - A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive receives an input AC power at a fixed input AC voltage and a fixed input frequency, and provides an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter and configured to filter and store the DC voltage from the converter. An inverter is connected to the DC link. A motor is connectable to the compressor for powering the compressor. A controller is arranged to control switching in the converter and the inverter. The controller is arranged to apply randomized pulse width modulation to vary the switching frequency of transistors in the converter and the inverter at each switching cycle. The motor may be a permanent magnet synchronous motor.04-08-2010
20080256974Condensate Heat Transfer for Transcritical Carbon Dioxide Refrigeration System - A bottle cooler system includes means for using atmospheric water condensate from the evaporator to draw heat from the condenser.10-23-2008
20130081425SCROLL COMPRESSOR AND AIR CONDITIONER INCLUDING THE SAME - The scroll compressor includes a fixed scroll including a first wrap, an orbiting scroll disposed to have a phase difference with respect to the fixed scroll, the orbiting scroll including a second wrap defining a compression chamber together with the first wrap, a suction part to receive a refrigerant into the compressor chamber, a driving shaft to transmit a rotation force to the orbiting scroll, a first injection part disposed in one position of the fixed scroll to introduce a refrigerant into the compression chamber, and a second injection part disposed in another position of the fixed scroll to introduce a refrigerant into the compression chamber, where the second wrap is disposed on the orbiting scroll such that the first injection part is opened to introduce the second refrigerant before the receipt of the first refrigerant through the suction part is completed during the orbiting of the orbiting scroll.04-04-2013
20130081424SCROLL COMPRESSOR AND AIR CONDITIONER INCLUDING THE SAME - Provided is a scroll compressor, which includes a stationary scroll including a first wrap, an orbiting scroll including a second wrap, wherein the orbiting scroll and the stationary scroll are disposed to have a phase difference therebetween, and a compression room is formed between the first and second wraps, an inflow part for introducing refrigerant into the compression room, a first introduction part disposed on a side portion of the stationary scroll to inject refrigerant into the compression room, and a second introduction part disposed on another side portion of the stationary scroll to inject refrigerant into the compression room. Pressure of the refrigerant injected by the second introduction part is different from that of refrigerant introduced into the first introduction part. The second wrap moves while the orbiting scroll orbits, and opens the first introduction part before the introduction of the refrigerant through the inflow part is completed.04-04-2013
20120174618ROTARY COMPRESSOR AND REFRIGERATION CYCLE APPARATUS - A rotary compressor (07-12-2012
20120174620HERMETIC COMPRESSOR AND REFRIGERATION CYCLE EQUIPMENT USING THE SAME - A closed compressor provided for achieving a wobbling suppressing effect of a rotating shaft by a bearing frame portion and improving a reliability thereof by preventing a bearing frame portion from being deformed due to a gas load includes a bearing member provided between the one end in the axial direction of the closed container and the electric motor and includes a bearing portion pivotally supporting the rotating shaft and a bearing frame portion holding the bearing portion, and the bearing frame portion includes a high rigidity portion and a low rigidity portion in a circumferential direction and the bearing frame portion is arranged in the closed container such that a direction in which a load acting on the bearing portion becomes maximum coincides with a direction in which rigidity of the bearing frame portion is high.07-12-2012
20120174619ROTARY COMPRESSOR AND REFRIGERATION CYCLE APPARATUS - A rotary compressor (07-12-2012
20130031933RETRO-FIT ENERGY EXCHANGE SYSTEM FOR TRANSPARENT INCORPORATION INTO A PLURALITY OF EXISTING ENERGY TRANSFER SYSTEMS - A controller connectable to a plurality of energy sources, energy demands and energy transfer units is contemplated. The controller is configurable to dynamically route excess energy from different sources to different demands via the energy transfer unit(s).02-07-2013
20130031932CROSS-FIN TYPE HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS INCLUDING THE SAME - A plurality of heat transfer fins are arranged so as to surround straight pipe portions of heat transfer tubes connected through bends in a serpentine arrangement. Heat transfer surfaces for transferring heat between air of the heat transfer tubes and the heat transfer fins have holes each having a radius smaller than the critical radius of a nucleus that occurs upon phase change from water vapor to condensed water droplets such that the holes are filled with the air at all times. Water is allowed to move from the holes filled with the air having low surface energy to metal part having high surface energy, thus improving drainage.02-07-2013
20100139312Refrigeration apparatus - A refrigeration apparatus (06-10-2010
20090241591HEAT CONVERTER FOR CONDENSATION AND REFRIGERATION SYSTEM USING THE SAME - To provide a heat converter for condensation that can be miniaturized and reduced in weight and can promote miniaturization, cost reduction and energy saving of a refrigeration system using the heat converter to thereby contribute to global environment conservation, and a refrigeration system using the heat converter.10-01-2009
20130036762Scroll type device including compressor and expander functions in a single scroll plate pair - A scroll type device for operating on a fluid provided thereto that includes, as a unit, a housing with two interleaved scroll plates that are installed within such housing and that are operably movable relative to one another in an eccentric orbit, with such scroll plates including interleaved spiral projections, spiral projections include first and second portions, which portions will operate for expansion and the other of which portion will operate for compression as the unit operates in a given normal direction of movement.02-14-2013
20090158771Heat Transfer compositions - Heat transfer compositions are usable in their own right or are suitable as a replacement for existing refrigeration usages. The compositions possess a reduced Greenhouse Warming Potential, yet have a capacity and energy efficiency (which may be conveniently expressed as the “Coefficient of Performance”) ideally within 20% of the values of those attained using R-134a, and preferably within 10% or less (e.g. about 5%) of these values.06-25-2009
20100107682Line Set - A line set for a heat regulating system for circulating a refrigerant. The line set may include a first tubing member made of at least one of aluminum and aluminum alloys. The first tubing member may include a first end capable of engaging with a first service port of an evaporator assembly and a second end capable of engaging with a second service port of a compressor assembly. The line set may include a second tubing member made of at least one of aluminum and aluminum alloys. The second tubing member may include a first end portion capable of engaging with a third service port of a condenser assembly and a second end portion capable of engaging with a fourth service port of an evaporator assembly. The first tubing member and the second tubing member may be configured to circulate the refrigerant in the heat regulating system.05-06-2010
20100107681HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS - Heat exchangers 05-06-2010
20100071406LUBRICANT FOR COMPRESSION REFRIGERATING MACHINE AND REFRIGERATING APPARATUS USING THE SAME - The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000; and an organic carboxylic acid ester of a polyhydric alcohol in which the ester contains two or more free hydroxyl groups. The lubricating oil for a compression type refrigerator of the present invention has high miscibility and high viscosity index, and is excellent in wear resistance and also corrosion prevention property under carbon dioxide atmosphere.03-25-2010
20100326129REFRIGERATION APPARATUS - The whole of a refrigerant circuit in which a refrigeration cycle is performed is accommodated in a casing. A heat medium circuit is provided, which is connected to the refrigerant circuit through a utilization-side heat exchanger, and which supplies a heat medium exchanging heat with refrigerant in the heat exchanger, to a predetermined heat utilization target. As the refrigerant of the refrigerant circuit, refrigerant which is represented by a molecular formula C12-30-2010
20130055751REFRIGERANT CYCLE DEVICE - A refrigerant cycle device includes a compressor, a using-side heat exchanger which heats a heat-exchange fluid by performing heat exchange between the heat-exchange fluid and high-pressure refrigerant flowing out of the compressor, an intermediate pressure passage through which intermediate-pressure gas refrigerant obtained by decompression of the high-pressure refrigerant flowing out of the using-side heat exchanger is introduced into a intermediate pressure port of the compressor, an exterior heat exchanger which evaporates low-pressure refrigerant obtained by decompression of the high-pressure refrigerant flowing out of the using-side heat exchanger and causes the evaporated refrigerant to flow toward a suction port of the compressor, and an auxiliary heater which heats the heat-exchange fluid before or at the same time as that the using-side heat exchanger heats the heat-exchange fluid.03-07-2013
20130055753AIR CONDITIONER - Provided is an air conditioner. The air conditioner includes a compressor, a condenser, a super cooling device, and an evaporator. The super cooling device includes: a first flow passage disposed in the super cooling device to guide the refrigerant coming from the condenser toward the evaporator; and a second flow passage located in the super cooling device for exchanging heat with the first flow passage and guiding the refrigerant toward the compressor. One of the first and second flow passage includes: a distribution part configured to divide a flow of the refrigerant; and an inner tube connected to the distribution part. A stream of the refrigerant flowing in the first flow passage exchanges heat with a stream of the refrigerant flowing in the second flow passage while using an outer surface area of the inner tube as a heat exchange area.03-07-2013
20130055752REFRIGERATING CIRCUIT FOR USE IN A MOTOR VEHICLE - A refrigerating circuit for use in a motor vehicle has a refrigerant compressor (03-07-2013
20100089092REFRIGERATION CYCLE APPARATUS AND FLUID MACHINE USED THEREFOR - A fluid machine (04-15-2010
20090272143 COMPUTER COOLING APPARATUS - An improved computer cooling apparatus includes: at least one evaporator installed on a surface of at least one heat generating source which is a central processing unit in a computer system unit; a compressor, connected to the evaporator; a condenser, connected to the compressor; an expansion valve, connected between the condenser and the evaporator; a fan, installed on a side of the condenser; and a coolant, circulating among the evaporator, the compressor, the condenser and the expansion valve. The evaporator, compressor, condenser, fan, expansion valve and coolant are used for achieving the effect of quickly dispersing a heat generating source in the computer system unit.11-05-2009
20110011125REFRIGERATION APPARATUS - An air conditioner (01-20-2011
20110308274AN EXPANSION VALVE COMPRISING A DIAPHRAGM AND AT LEAST TWO OUTLET OPENINGS - An expansion valve (12-22-2011
20100089093SCROLL COMPRESSOR AND REFRIGERATING MACHINE HAVING THE SAME - A scroll compressor and a refrigerating machine including the scroll compressor are provided. An oil supply channel may be formed in a fixed scroll of the compressor so as to provide for communication between a back pressure chamber and compression chambers formed between the fixed scroll and an orbiting scroll. The oil supply channel enables oil to be smoothly introduced from the back pressure chamber into each compression chamber, so that frictional losses and refrigerant leakage in the compression chambers may be effectively prevented, and efficiency of the compressor and the refrigerating machine including the compressor may be enhanced.04-15-2010
20130160485COOLER AND REFRIGERATING APPARATUS INCLUDING THE SAME - A cooler includes a circular pipe member through which a heating medium circulates, and being in thermal contact with a power module to cool the power module with the heating medium flowing through an interior of the circular pipe member. An axially extending channel formation member between which and an inner circumferential surface of the circular pipe member a narrow channel for the heating medium is formed is provided in the circular pipe member.06-27-2013
20110083466VEHICLE AIR-CONDITIONING SYSTEM EMPLOYING TUBE-FIN-TYPE EVAPORATOR USING HFO 1234YF MATERIAL REFRIGERANT - Provided is an air conditioning system with a tube-fin type evaporator which obtains optimal performance The air conditioning system with the tube-fin type evaporator using HFO 1234yf refrigerant, which has totally different physical properties from conventional refrigerant containing R-134, CO04-14-2011
20090145166Noise Reduction in a Thermostatic Expansion Valve - A thermostatic expansion valve assembly is provided for an air conditioning system. A thermostatic expansion valve includes a valve body having an evaporator inlet port, an evaporator outlet port, a suction line port, and a liquid inlet port. The thermostatic expansion valve controls a flow of refrigerant from the liquid line port to the evaporator inlet port. A liquid line conduit is coupled to the liquid inlet port. The liquid line conduit has at least a segment elevated above the liquid inlet port. The vapor within the liquid inlet conduit accumulates at an uppermost portion of the segment prior to a compressor startup. A substantial amount refrigerant liquid is maintained between the uppermost portion of the segment and the liquid inlet port prior to the compressor startup.06-11-2009
20120000241Power consumption economizer for refrigerating machines of the chiller type - A power consumption economizer for refrigerating machines of the chiller type, comprising, on a same line, a pump for a heat transfer fluid, an evaporator of an associated refrigeration system for refrigerating the heat transfer fluid, sensors for detecting the flow and temperature of the heat transfer fluid and flow-rate adjustment means being associated with the pumping means. The system comprises bypass elements adapted to exclude reversibly the evaporator from the line.01-05-2012
20120000240REFRIGERANT COOLING DEVICE - A refrigeration system for an appliance includes a compression stage, a condenser stage, and an evaporation stage. The condenser stage includes a first condenser coupled to the compression stage and a pressure restriction device coupled between the first condenser and the evaporation stage.01-05-2012
20110271709SEALED COMPRESSOR AND REFRIGERATION DEVICE - There is disclosed a sealed compressor in which a compressive component housed inside of a sealed container comprises a block, a suction valve, a piston, and a suction muffler, the suction muffler including a muffler body defining a muffler space and an outlet tube communicating the muffler space with the suction valve, the outlet tube having a bent portion bent in a middle portion between an opening exposed to the muffler space and an opening in a vicinity of the suction valve, a first outlet tube portion extending from the bent portion toward the muffler space, and a second outlet tube portion extending from the bent portion toward the suction valve, wherein a close sided space is formed in a vicinity of the bent portion, the close sided space having one end in communication with the outlet tube and the other end closed.11-10-2011
20110289960RECIPROCATING COMPRESSOR AND REFRIGERATING MACHINE HAVING THE SAME - Disclosed are a reciprocating compressor and a refrigerating apparatus having the same, wherein a magnet bearing is inserted between facing surfaces between a cylinder block and a crank shaft and the magnet bearing so as to generate a magnetic force both in a shaft direction and in a radial direction, so that the cylinder block and the crank shaft can be supported both in the shaft direction and in the radial direction, thereby reducing a frictional loss due to an eccentric load of the crank shaft, and also, both magnets are disposed to overlap each other so as to prevent an increase in an input load due to the magnetic force between the magnets, resulting in further improvement of energy efficiency of the compressor.12-01-2011
20100139313REFRIGERANT VAPOR INJECTION FOR DISTRIBUTION IMPROVEMENT IN PARALLEL FLOW HEAT EXCHANGER MANIFOLDS - Adequate distribution of a two-phase refrigerant flowing through a plurality of heat transfer tubes in a generally parallel manner is ensured. Tapping a portion of predominantly vapor refrigerant from an upstream location and delivering it to a downstream location where separation of liquid and vapor refrigerant phases is likely to occur and a liquid refrigerant phase is likely to accumulate. Additional momentum from the predominantly vapor refrigerant creates homogeneous conditions for the vapor/liquid refrigerant mixture, promoting uniform distribution of the mixture In downstream heat transfer tubes. The vapor refrigerant may be tapped from various locations.06-10-2010
20110259040REFRIGERATION CIRCUIT - A refrigeration circuit (10-27-2011
20120024008HEAT SOURCE UNIT - A time for loading a refrigerant is shortened when a utilization unit of an air conditioner is installed. A heat source unit 02-02-2012
20100037650APPARATUS FOR REFRIGERATION CYCLE AND REFRIGERATOR - Disclosed are a refrigeration-cycle apparatus including a plurality of evaporators having various temperature bands, and a refrigerator including a plurality of cooling compartments to enable stable and even cooling operations in various temperature bands with the use of the plurality of evaporators. The refrigeration-cycle apparatus and the refrigerator enable the individual operation of a part of the evaporators, thereby reducing the consumption of energy and enabling the accurate control of an interior temperature of the refrigerator. The refrigeration-cycle apparatus includes a compressor to compress and discharge a refrigerant, a condensing unit including at least one condenser to condense the refrigerant discharged from the compressor, a distributor to distribute the refrigerant condensed in the condensing unit, and a cold air generating unit including a plurality of evaporators each to evaporate the refrigerant distributed by the distributor, the evaporators being connected in series and parallel to one another and operated, respectively, to generate cold air having different temperature bands from one another.02-18-2010
20100011805REFRIGERATION APPARATUS - A refrigeration apparatus is configured to perform a refrigeration cycle operation in which a high-pressure side attains a pressure that exceeds the critical pressure of a refrigerant used in the refrigeration cycle operation. The refrigeration apparatus includes a refrigerant circuit and a control unit. The refrigerant circuit has a plurality of constituent components including a compressor, a cooler, an expansion mechanism, and a heater. The control unit is operatively coupled to control at least one of the constituent components such a quasi-subcooling degree is within a predetermined temperature range. The quasi-subcooling degree being a temperature difference between a quasi-condensation temperature and a cooler outlet refrigerant temperature with the quasi-condensation temperature being the refrigerant temperature at which isobaric specific heat capacity of the refrigerant at the refrigerant pressure on the high-pressure side of the refrigeration cycle is at a maximum.01-21-2010
20110214451COMPRESSOR AND REFRIGERATING MACHINE HAVING THE SAME - Disclosed are a compressor and a refrigerating machine having the same, wherein a bearing member (ball bearing) is installed between both thrust bearing surfaces and an elastic member is disposed between the bearing member and at least one of the thrust bearing surfaces so as to allow a rolling contact between the ball bearing and the thrust bearing surface or a washer, thereby reducing a frictional loss at the thrust bearing surface and enhancing the performance of the compressor.09-08-2011
20100083692VARIABLE SPEED DRIVE FOR PERMANENT MAGNET MOTOR - A drive system for a compressor of a chiller system includes a variable speed drive. The variable speed drive is arranged to receive an input AC power at a fixed AC input voltage and fixed input frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter connected to an AC power source providing the input AC voltage. The converter is arranged to convert the input AC voltage to a DC voltage. A DC link is connected to the converter. The DC link is arranged to filter and store the DC voltage from the converter. A first inverter and a second inverter are each connected to the DC link. A motor includes stator windings connected between the first inverter and the second inverter to power the motor by the output AC power from the first inverter and the second inverter. The motor is connectable to a compressor of the chiller system to power the compressor. The motor may be a permanent magnet synchronous motor.04-08-2010
20100083691REFRIGERATION CAPACITY BANKING FOR THERMAL CYCLING - A thermal cycling system includes a structure defining a load space, a heating assembly positioned to heat to the load space, and a cooling assembly positioned to cool the load space. The cooling assembly includes a refrigeration circuit and a banking circuit. The refrigeration circuit has a compressor, a refrigeration condenser, a first refrigeration evaporator in direct thermal communication with the load space, a second refrigeration evaporator in parallel with the first evaporator, and primary refrigerant circulating throughout the refrigeration circuit. The banking circuit is gravity fed and includes a banking condenser, a banking evaporator positioned to cool the load space, and a banking refrigerant circulating throughout the banking circuit. The banking condenser includes a collection reservoir to store liquid banking refrigerant and is in thermal communication with the second refrigeration evaporator.04-08-2010
20090090128REFRIGERATING-MACHINE OIL COMPOSITION, AND COMPRESSOR FOR REFRIGERATING MACHINE AND REFRIGERATING APPARATUS EACH EMPLOYING THE SAME - The present invention provides a refrigerator oil composition which satisfies both sludge dispersibility and prevention of wear and seizing of sliding parts made of aluminum and/or iron, and a compressor and a refrigeration apparatus using the refrigerator oil composition.04-09-2009
20090183524Refrigerating Apparatus - A refrigerating apparatus (07-23-2009
20100218548Linear Compressor or Refrigerating Unit Comprising a Discharge Device for Fluid Condensate - A linear compressor comprising a piston housing; a compressor piston configured for reciprocatory motion with the piston housing along an axis thereof, whereby the compressor piston is mounted in the piston housing a housing wall having openings formed therein with a gaseous fluid flowing through the openings; and a discharge device for fluid condensate.09-02-2010
20100089094COOLING STORAGE - A liquid refrigerant from a compressor 04-15-2010
20090277215TWO-STAGE SCREW COMPRESSOR AND REFRIGERATING DEVICE - There is provided a two-stage screw compressor including a first-stage compressor that compresses a fluid, a second-stage compressor that further compresses the fluid compressed by the first-stage compressor, a motor that drives the first-stage compressor and the second-stage compressor, and a box body that serves as a flow passage connecting an outlet of the first-stage compressor and an inlet of the second-stage compressor, and also forms a connection space storing a transmission mechanism for transmitting a rotation force from the motor to the first-stage compressor and to the second-stage compressor, wherein the connection space is sealed by the casing of the motor, and the connection space and an internal space of the casing of the motor communicate with each other.11-12-2009
20090277216ROTARY COMPRESSOR - A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve to the end plate, the fixing bolt is screwed into the bolt hole.11-12-2009
20120031140ELECTRIC VEHICLE AND THERMAL MANAGEMENT SYSTEM THEREOF - Disclosed herein is an thermal management system for an electric vehicle, comprising a heat generating component cooling device and a heat pump device, wherein the heat pump device comprises a compressor, a first heat exchanger, a throttling element and a second heat exchanger which are connected through pipelines and form a loop; the first heat exchanger and the second heat exchanger are both dual channel exchanger, two channels of the first heat exchanger and the second heat exchanger are sealed and isolated respectively, first channels of the first heat exchanger and the second heat exchanger communicate with other components of the heat pump device through pipelines; the heat generating component cooling device communicates with second channels of the first heat exchanger and the second heat exchanger respectively to form loops which can be closed, and the two loops formed by the heat generating component cooling device with the first heat exchanger and the second heat exchanger respectively can be open alternatively. The thermal management system of the present invention can ensure full use of the heat from heat generating components in the electric vehicle and improve the cooling effect of the heat generating components and the comfort of the cabin.02-09-2012
20090007589Refrigerartion apparatus - A refrigeration apparatus (01-08-2009
20080236191Apparatus including freezing unit and projector including freezing unit - There are disclosed an apparatus including a freezing unit capable of securely discharging drainage from an evaporator regardless of a posture change of a main body, and a projector including the freezing unit. A liquid crystal display projector (an apparatus) including a main body provided with a freezing unit having a refrigerant circuit constituted of at least a compressor, a radiator, a capillary tube (a pressure reducing unit) and an evaporator includes a tapered shape of a sealed path of a duct which surrounds the evaporator constituted in the whole region under the evaporator in a prospective posture change of the main body, a groove (a liquid receiving portion) formed in the center of the shape, and a wick (a discharge member) which discharges drainage received in this groove by use of a capillary force.10-02-2008
20130213081MICROCHANNEL SUCTION LINE HEAT EXCHANGER - A refrigeration system including a refrigeration circuit that has an evaporator, a compressor, a condenser, and a heat exchanger. The evaporator, compressor, and condenser are fluidly connected and arranged in series with each other. A liquid line fluidly connects the evaporator to the condenser and a suction line fluidly connects the compressor to the evaporator. The heat exchanger includes a plurality of first refrigerant flow tubes that is in fluid communication with one of the suction line and the liquid line, and a second refrigerant flow tube that is in fluid communication with the other of the suction line and the liquid line. Each of the first refrigerant flow tubes and the second refrigerant flow tube have microchannels, and the second refrigerant flow tube positioned between and cooperates with the first refrigerant flow tubes to heat vapor refrigerant flowing in the suction line.08-22-2013
20090266104Heat exchanger header tank and heat exchanger comprising same - A heat exchanger has header tanks each including a header forming plate, a tube connecting plate, and an intermediate plate interposed between the two plates, the plates being arranged in superposed layers and brazed to one another. Each of the plates is made from a metal plate by press work. The header forming plate has an outward bulging portion. The tube connecting plate has tube insertion holes. The intermediate plate has communication holes causing tube insertion holes to communicate with the interior of each outward bulging portion therethrough. Heat exchange tubes have opposite ends placed into the respective insertion holes and brazed to the respective tube connecting plates. The heat exchanger including such header tanks is reduced in the number of components, can be fabricated with a high work efficiency, and exhibits improved heat exchange performance.10-29-2009
20090266105 HEAT EXCHANGER - A heat exchanger (10-29-2009
20090165496Refrigerator and operating method of the same - When a Stirling refrigerating engine for cooling a refrigerator starts, an operation is performed such that a gas-phase fluid flowing through a natural circulation circuit on a high temperature side attains a temperature higher than that in a normal operation. More specifically, the Stirling refrigerating engine operates with a piston drive speed higher than a normal speed, or a fan motor arranged for a condenser on the high temperature side stops. Thereby, a gas/liquid coexistent refrigerant in a high temperature side evaporator attains a pressure higher than a normal pressure. Thereby, a liquid phase fluid in a forced-circulation circuit on a high temperature side also attains a pressure higher than a normal pressure so that bubbles produced in the liquid phase fluid disappear, and a circulation pump can start.07-02-2009
20080282729Air-conditioning system for a motor vehicle, and motor vehicle equipped with the system - An air-conditioning system is described which comprises at least one heat exchanger for exchanging heat between external air and a corresponding intermediate fluid, at least one heat exchanger for exchanging heat between air within the passenger compartment and a corresponding intermediate fluid, and an enbloc assembly wherein at least a condenser for a coolant, an evaporator of the coolant, and an internal heat exchanger are integrated. The internal heat exchanger is designed to enable heat exchange between the coolant coming out from the evaporator and coolant coming out from the condenser. The enbloc assembly is housed inside the engine compartment, along with a compressor for the coolant.11-20-2008
20110203308HEAT EXCHANGER INCLUDING MULTIPLE TUBE DISTRIBUTOR - A heat exchanger includes tubes and an inlet manifold to direct a first fluid into the tubes at a third direction. Heat is exchanged between the first fluid and a second fluid in the tubes. The heat exchanger also includes a distributor tube located within the inlet manifold. The distributor tube includes a short tube including a plurality of first orifices that direct the first fluid into the inlet manifold at a first direction, and a long tube including a plurality of second orifices that direct the first fluid into the inlet manifold at a second direction.08-25-2011
20080282728Refrigerating Apparatus - In order that an indoor heat exchanger (11-20-2008
20100275643HEAT EXCHANGER - The disclosure is directed to a component (11-04-2010
20080202153Evaporator - An evaporator includes a plurality of heat exchange tubes extending vertically and arranged in rows spaced apart from each other in a front-rear direction. A drainage acceleration member extending vertically is disposed between the adjacent front and rear heat exchange tubes. A gap is present between each of the adjacent front and rear heat exchange tubes, and the drainage acceleration member disposed between the front and rear heat exchange tubes. The gaps serve as drain channels. The evaporator exhibits excellent drainage of condensed water.08-28-2008
20100139314REFRIGERANT COMPOSITIONS AND USE THEREOF IN LOW TEMPERATURE REFRIGERATION SYSTEMS - A refrigerant composition. The composition has 25 to 35 mass % difluoromethane, 20 to 40 mass % pentafluoroethane, and 35 to 45 mass % tetrafluoroethane. The composition exhibits a positive superheat at an evaporation temperature of about −30° F. There is also a process for producing refrigeration and a refrigeration system.06-10-2010
20090188276REFRIGERATION SYSTEM - A refrigeration system includes a refrigerant circuit including a chilling expansion valve, a chilling heat exchanger, a compressor (07-30-2009
20090272144COMPUTER COOLING APPARATUS - An improved computer cooling apparatus includes: a heat absorbing unit, having at least one water cooling block, a pump connected to the water cooling block, and a heat exchanger connected to the pump, and a first working fluid flows through the water cooling block, the pump and the heat exchanger; and a cooling unit, having an evaporator attached onto the heat exchanger, a compressor connected to the evaporator, a condenser connected to the compressor, and an expansion valve connected to the condenser, and a second working fluid flows through the evaporator, the compressor, the condenser and the expansion valve. The heat absorbing unit absorbs a related heat source in a computer, and a cooling unit dissipates the heat to provide a quick way of dispersing the heat source and a better heat dissipating effect.11-05-2009
20120137724DUAL EVAPORATOR REFRIGERATION SYSTEM - A dual evaporator refrigerator appliance is disclosed. The appliance includes a first evaporator, a second evaporator, and at least one refrigerant stream combining device. Refrigerant flow control techniques are provided whereby a compressor in the refrigerator appliance that receives a resulting refrigerant stream is required to do less work to raise the pressure of the stream, and thus the refrigerator appliance is more energy efficient.06-07-2012
20120067077Torque estimating divice for compressor - A torque estimating device of a compressor for an ejector-type refrigerant cycle device includes a high pressure detector disposed to detect a physical amount having a relation with a high-pressure side refrigerant pressure of a refrigerant cycle, an evaporation pressure detector disposed to detect a physical amount having a relation with a refrigerant evaporation pressure in a suction side evaporator, a pressurizing estimating portion for estimating a pressurizing amount in a pressure increasing portion of an ejector to be increased in accordance with an increase of a pressure difference between the high-pressure side refrigerant pressure and the refrigerant evaporation pressure, and a suction pressure estimating portion for estimating a suction refrigerant pressure of the compressor by using the pressurizing amount estimated by the pressurizing estimating portion. Thus, a drive torque of the compressor can be accurately estimated in the ejector-type refrigerant cycle device.03-22-2012
20090049861Heat Exchanger with Sloped Baffles - A condenser is made from a heat exchanger including a tube bundle within a shell. The tube bundle has an interior section within a periphery, and at least two sloped baffles are positioned in the tube bundle. Each sloped baffle has an inner edge which is within the tube bundle interior, and a gap is defined between the inner edges.02-26-2009
20090205360CENTRIFUGAL COMPRESSOR ASSEMBLY AND METHOD - A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly comprising a flow conditioning nose, a plurality of inlet guide vanes and a flow conditioning body that positions inlet guide vanes to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.08-20-2009
20090211293Heat and mass exchanger liquid line subcooler - An air conditioning system for circulating a refrigerant includes a condenser having a vapor inlet for condensing the refrigerant into a high-pressure liquid having a first predetermined temperature. A heat exchanger including an exhaust channel directs air therethrough. The heat exchanger further includes a refrigerant inlet in fluid communication with a refrigerant outlet for receiving a high-pressure liquid and for delivering the high-pressure liquid therethrough. Furthermore, a heat mass exchanger outputs wet working air having a second predetermined temperature. The heat exchanger is in fluid communication with the heat mass exchanger for receiving the working air having a temperature less than the high-pressure liquid. The working air flows through the exhaust channel and over the high-pressure liquid to transfer heat from the high-pressure liquid to the working air for reducing the temperature of the high-pressure liquid.08-27-2009
20080314073METHOD FOR LEAK DETECTION IN HEAT TRANSFER SYSTEMS - Disclosed is a method for detecting a leak in a closed loop heat transfer system comprising monitoring the pressure of the heat transfer composition inside said heat transfer system, wherein a drop in pressure indicates a leak. Also disclosed is a heat transfer system comprising an evaporator, a compressor, a condenser, an expander and a device for measuring internal system pressure. The system pressure measuring device is disposed inside the closed loop heat system. The internal system pressure measuring means may be located either between the evaporator and the condenser, between the expander and the evaporator, between the compressor and the condenser, or between the condenser and the expander.12-25-2008
20080314071SUPERCRITICAL REFRIGERATION CYCLE SYSTEM - A supercritical refrigeration cycle system (12-25-2008
20090249826Integrated compressor/expansion engine - A multi cylinder compressor/expansion engine having a centrally mounted drive shaft. A cylinder barrel is mounted on the drive shaft and both the cylinder barrel and the drive shaft rotate about a common axis. There is a plurality of cylinders in the cylinder barrel with pistons disposed in each of the cylinders. Some of the cylinders are compression cylinders and some of the cylinders are expansion cylinders. The compression cylinders discharge a fluid at a first high pressure from the engine. The expansion cylinders receive fluid at a second pressure which provides energy to the engine thereby reducing the energy required for the engine to rotate the drive shaft.10-08-2009
20110138848VARIABLE CAPACITY TYPE ROTARY COMPRESSOR, COOLING APPARATUS HAVING THE SAME, AND METHOD FOR DRIVING THE SAME - Disclosed is a variable capacity type rotary compressor (06-16-2011
20100147020ROTARY COMPRESSOR AND REFRIGERATION CYCLE EQUIPMENT - A rotary compressor, which contains a motor unit and compression mechanism in a sealed case, transmits the rotational power of the motor to the compression mechanism through a rotary shaft and crankshafts eccentrically provided in the rotary shaft, and compresses a refrigerant in the compression mechanism, wherein the rotary compressor is configured to have H/(φa•E)=K, and K≦0.065, and the formula 0.35+0.07•K•H≦L/φDb≦0.45+0.07•K•H, assuming that the inside diameter of the cylinder forming the compression mechanism is φDa [mm], the cylinder height is H [mm], the crankshaft eccentricity is E [mm], the crankshaft diameter is φDb [mm], and the sliding lengths of the crankshaft and a roller fitted over the crank are set to L [mm].06-17-2010
20100154467Gas-Liquid Separator and Refrigeration System With Gas-Liquid Seperator - A refrigeration system includes a refrigerant circuit including a gas-liquid separator (06-24-2010
20130213082METHOD AND APPARATUS FOR A DISTRIBUTED COOLING SYSTEM FOR ELECTRONIC EQUIPMENT ENCLOSURES - A method and apparatus for an electronic equipment enclosure that provides a frame and an enclosure surrounding the frame. One or more plenums may be arranged between the frame and enclosure and a heat exchanger may be mounted within the one or more plenums. The heat exchanger(s) may be water-based, glycol-based, refrigerant-based or based on other liquid mediums. The heat exchanger(s) may include multiple sets of fans and cooling elements, which may form a redundant cooling configuration. The heat exchanger(s) of one or more enclosures may be interconnected to a cooling controller that may control liquid-flow and air-flow rates within the one or more enclosures based on sensor signals provided to the cooling controller. Components of the cooling system may be distributed throughout08-22-2013
20100162749HEAT EXCHANGER AND REFRIGERATING AIR CONDITIONER - A heat exchanger includes a first flat tube in which a low temperature fluid flows and a second flat tube in which a high temperature fluid flows and that is laminated on the first flat tube and arranged so that the flow direction of the high temperature fluid is parallel to the flow direction of the low temperature fluid. One of the first and second flat tubes is arranged in the direction of lamination. Ends of the flat tubes are bent in a direction intersecting at right angles both flow directions of the fluids and the direction of lamination.07-01-2010
20100162750EXPANDER-COMPRESSOR UNIT AND REFRIGERATION CYCLE APPARATUS HAVING THE SAME - An expander-compressor unit (07-01-2010
20100192623REFRIGERATION CIRCUIT - A refrigeration circuit (08-05-2010
20100192622REFRIGERATING SYSTEM - A refrigerating system is disclosed. Since heat exchange is performed between first and second evaporators by a heat exchanging unit, the first and second evaporators have temperatures similar to each other, thereby requiring no additional ‘pump-down’ operation. Also, a compressor does not have a discharge occurrence owing to no additional ‘pump-down’ operation, thereby having no loss and an enhanced reliability. Besides, since no additional pump-down operation is required, power consumption for operating the compressor so as to collect a remaining refrigerant is reduced. Accordingly, the efficiency of the refrigerating system is enhanced. Furthermore, as the ‘pump-down’ operation is not required, a backflow preventing unit for preventing a refrigerant collected from an evaporator from backflowing to the evaporator is not required. Accordingly, the fabrication cost is reduced.08-05-2010
20100223948SCROLL EXPANDER AND REFRIGERATION CYCLE APPARATUS09-09-2010
20100212352COMPRESSOR AND REFRIGERATING APPARATUS HAVING THE SAME - A scroll compressor and a refrigerating apparatus having the same are provided. In the scroll compressor, an angle formed between an injection passage that guides refrigerant from a condenser back into an intermediate compression chamber and a back pressure passage that guides refrigerant from the intermediate compression chamber into a back pressure chamber may be designed so as to prevent leakage of refrigerant from the intermediate compression chamber into the back pressure chamber. This allows an appropriate pressure to be maintained the back pressure chamber, and increases an amount of refrigerant supplied into the compression chambers, thereby improving performance of the scroll compressor and a refrigerating apparatus in which such a scroll compressor is installed.08-26-2010
20100242533HEAT EXCHANGER - An heat exchanger for use in a vapor compression system is disclosed and includes a shell, a first tube bundle, a hood and a distributor. The first tube bundle includes a plurality of tubes extending substantially horizontally in the shell. The hood covers the first tube bundle. The distributor is configured and positioned to distribute fluid onto at least one tube of the plurality of tubes.09-30-2010
20100242531MULTI-STAGE ROTARY-TYPE FLUID MACHINE AND REFRIGERATION CYCLE APPARATUS - A multi-stage rotary-type fluid machine may be configured as what is called a two-stage rotary expander, in which a refrigerant expands in an expansion chamber having a first discharge side space (09-30-2010
20100218549REFRIGERATION SYSTEM - A refrigeration system (09-02-2010
20100199712REFRIGERANT VAPOR COMPRESSION SYSTEM OPERATING AT OR NEAR ZERO LOAD - A method is provided for operating a refrigerant vapor compression system at substantially zero cooling capacity to facilitate tight temperature control within a climate-controlled environment associated with the refrigerant vapor compression system. The method includes the step of diverting substantially all refrigerant flow from the primary refrigerant flow circuit of the refrigerant vapor compression system at a first location downstream, with respect to refrigerant flow, of the heat rejection heat exchanger and upstream, with respect to refrigerant flow, of the evaporator refrigerant expansion device to reenter the primary refrigerant flow circuit at a second location downstream, with respect to refrigerant flow, of the evaporator and upstream, with respect to refrigerant flow, of the compression device.08-12-2010
20110056236REFRIGERATION CYCLE - In a refrigeration cycle comprising a compressor, a condenser, a pressure reduction and expansion means, and an evaporator, R1234yf is used as the refrigerant, the refrigerant at the exit side of the evaporator is controlled in a superheated condition, and the refrigeration cycle is operated in a range of 5 to 16 degrees of superheat, and preferably in a range of 10 to 16 degrees of superheat. When the refrigerant used is changed to the new refrigerant R1234yf, while high advantage for improving the coefficient of performance can be achieved, the rise in temperature of the discharged refrigerant is appropriately suppressed so that deterioration of refrigerating machine oil in the refrigerant can be prevented, and a high-efficiency operation can be realized as the entirety of the refrigeration cycle.03-10-2011
20110056235LINEAR ELECTRIC COMPRESSOR AND REFRIGERANT CIRCUIT - A refrigerant circuit includes a linear electric compressor including a housing with a cylinder bore, a pair of end plates, a valve unit, a piston, an urging device for urging the piston, a coil generating electromagnetic force and a permanent magnet. The permanent magnet cooperates with the urging device and the coil to reciprocate the piston in the cylinder bore. The piston further includes a piston rod and the urging device is provided around the piston rod and a pair of piston heads integrally formed at opposite ends of the piston rod. The diameter of the piston rod is smaller than that of the piston head. The permanent magnet is provided on the piston head and the coil surrounds the piston head. The housing further includes a seat located between the pair of piston heads and the urging device is provided between the seat and each of the piston head.03-10-2011
20090205359Low Refrigerant Charge Secondary Loop Air Conditioning System - A secondary loop air conditioning system for a vehicle that includes a condenser and an integrated assembly is disclosed. The condenser has a first condenser header spaced from a second condenser header, a condenser core extending between the first and second condenser headers, and a refrigerant inlet operatively engaging the first condenser header. The integrated assembly includes a chiller mounted to the first condenser header and having a liquid inlet and a liquid outlet configured to be in fluid communication with a secondary loop of the air conditioning system, and an expansion device in fluid communication with the condenser and mounted adjacent to the chiller for directing refrigerant into the chiller, and a refrigerant outlet. Also, a receiver/dryer area may be located in one of the condenser and the integrated assembly.08-20-2009
20120192588AIR-CONDITIONING APPARATUS - To provide an air-conditioning apparatus capable of achieving energy saving. Pump control of controlling the operating capacity of a pump is performed such that the opening degree of a heat medium flow control device, controlled by control of the heat medium flow control device, approaches a target opening degree, and a refrigeration cycle as a refrigerant circuit is controlled such that the temperature of a heat medium, whose flow rate is controlled by the control of the heat medium flow control device and the pump control, approaches a target temperature.08-02-2012
20100293990 MODULAR VALVE - The invention provides a valve comprising a house and a drum rotatable in the house. The house comprises a plurality of substantial identical tubular mid-section house members, a bottom house member, and a top house member. When connecting the house members to each other, a continuous outer wall surrounding a house cavity, a port, and a plurality of nozzles being in fluid communication with the house cavity is provided. The drum comprises a plurality of substantial identical tubular mid-section drum members, a bottom drum member, and a top drum member. When connecting the drum members to each other, an inner wall having an outer surface being adapted for rotation in contact with a corresponding inner surface of the outer wall, the inner wall comprising a plurality of conduits is provided. During rotation of the drum, the conduits can be brought into and out off fluid communication with the nozzles in order to provide passages between the port and the nozzles. Furthermore, the invention provides a set of members to form a valve, and a system for thermal exchange.11-25-2010
20110126580LIQUID SUPERCOOLING SYSTEM - A liquid supercooling system may include a suction pipe that has a spiral groove around the outer circumference thereof and connects an evaporator with a compressor, a liquid pipe that connects a condenser with an expansion pipe, a heat exchange pipe in which the suction pipe is inserted and of which one end is connected with the liquid pipe such that heat can be exchanged between the suction pipe and the liquid pipe, and a connection block, of which one side is connected to the liquid pipe and of which the other side is connected to the suction pipe and the heat exchange pipe.06-02-2011
20100242532FREE COOLING REFRIGERATION SYSTEM - A refrigeration system includes a chiller with an integrated free cooling system and refrigeration system. In certain embodiments, the chiller may be a single package unit with all equipment housed within the same support frame. The chiller may generally include three modes of operation: a first mode that employs free cooling, a second mode that employs free cooling and implements a refrigeration cycle, and a third mode that uses the free cooling system to remove heat from the refrigeration system. A heat exchanger may be shared between the free cooling system and the refrigeration system to transfer heat from the refrigeration system to the free cooling system.09-30-2010
20110000255MICROCHANNEL HEAT EXCHANGER WITH ENHANCED REFRIGERANT DISTRIBUTION - An evaporator includes a manifold receiving a distributor insert. The distributor insert receives the flow of refrigerant to be delivered into the manifold, and has openings to communicate this refrigerant into a plurality of chambers which are defined between adjacent dividing elements of the distributor insert within the manifold. In this manner, these chambers are each associated with distinct heat transfer tubes and such that these chambers are isolated from each other.01-06-2011
20110000254HEAT EXCHANGER AND AIR CONDITIONER USING THE SAME - When forming fins and heat transfer tubes by aluminum material, a pressure loss in the tube does not increase and a heat exchanger can be provided having heat transfer performance equal to or higher than a copper tube. The heat exchanger includes fins made of an aluminum material having a low deformation resistance and heat transfer tubes made of an aluminum material having a higher deformation resistance than the aluminum material forming the fins, and on whose internal surface the groove is provided to penetrate the fin to be fixed. It is also arranged that the tube axial direction (a) of the inner surface of the heat transfer tube and the direction (b) of the groove provided on the internal surface of the heat transfer tube are substantially parallel. In this case, the groove direction (b) forms an angle of 0 degrees to 2 degrees with respect to the tube axial direction (a) of the inner surface of the heat transfer tube. The depth of the groove of the heat transfer tube after tube expansion is 0.2 mm to 0.3 mm, and the top width of the ridge top portion is 0.08 mm to 0.18 mm. Further, the number of grooves of the heat transfer tube 20 is 40 to 60, and an apex angle a is 5 degrees to 20 degrees.01-06-2011
20100180630VALVE CONTROLLER, VALVE CONTROLLING METHOD, REFRIGERATION AND COLD STORAGE SYSTEM, DEVICE AND METHOD FOR CONTROLLING THE SYSTEM - To provide a motor-driven valve with a small number of parts, with excellent assemblage, capable of maintaining a large valve port diameter even downsized, and to prevent deterioration of housing environment due to sound caused by the impact and shortened life that are generated by collisions of closing limit stopper parts. A motor-driven valve according to the present invention comprises: a male screw member rotating in accordance with a rotation of a rotor of an electric motor and engaging with a female screw member fixed to a valve main body; a valve body contacting to and separating from a valve seat in the valve main body by a rotation of the male screw member; two stopper parts rotating in accordance with the rotation of the rotor of the electric motor; an opening limit stopper part mounted to the female screw member, the opening limit stopper part contacting with one of the two stopper parts in a fully-opened state of the motor-driven valve to restrict the rotation of the male screw member in a direction that the motor-driven valve opens; and a closing limit stopper part mounted to the female screw member, the closing limit stopper part contacting with another stopper part in a fully-closed state of the motor-driven valve to restrict the rotation of the male screw member in a direction that the motor-driven valve closes.07-22-2010
20110030420MICROCHANNEL HEAT EXCHANGER INCLUDING MULTIPLE FLUID CIRCUITS - A microchannel heat exchanger includes a plurality of microchannel tubes including a first set of microchannel tubes and a second set of microchannel tubes. A first circuit of the microchannel heat exchanger includes the first set of microchannel tubes, and a portion of a first fluid flows through the first set of microchannel tubes and exchanges heat with a second fluid. A second circuit of the microchannel heat exchanger includes the second set of microchannel tubes, and a reminder of the first fluid flows through the second set of microchannel tubes and exchanges heat with the second fluid. The first fluid from the first circuit and the first fluid from the second circuit combine into a common flow.02-10-2011
20090064711SYSTEM AND METHOD FOR USING HOT GAS REHEAT FOR HUMIDITY CONTROL - A humidity control method is provided for a multi-stage cooling system having two or more refrigerant circuits that balances humidity control and cooling demand. Each refrigerant circuit includes a compressor, a condenser and an evaporator. A hot gas reheat circuit having a hot gas reheat coil is connected to one of the refrigerant circuits and is placed in fluid communication with the output airflow from the evaporator of that refrigerant circuit to provide additional dehumidification to the air when humidity control is requested. The hot gas reheat circuit bypasses the condenser of the refrigerant circuit during humidity control. Humidity control is only performed during cooling operations and ventilation operations.03-12-2009
20090064710Cooling apparatus - A cooling apparatus which stably cools a target. The cooling apparatus includes a primary circuit that has a first heat exchanging section which is provided at a heat exchanger, and vaporizes a liquid-phase primary coolant to be a gas-phase primary coolant, and a condenser which condenses the gas-phase primary coolant to be the liquid-phase primary coolant, and lets the liquid-phase primary coolant flow to the first heat exchanging section from the condenser through a liquid piping and lets the gas-phase primary coolant flow to the condenser from the first heat exchanging section through a gas piping. The cooling apparatus further includes a secondary circuit having a second heat exchanging section, an expansion valve, an evaporator, and a compressor connected together by a coolant piping.03-12-2009
20090064709REFRIGERATING AIR CONDITIONER - A refrigeration air conditioner includes a first equalizer pipe connecting a bottom portion of a first hermetic vessel, which contains a main compression mechanism and lubricating oil, to a bottom portion of a second hermetic vessel, which contains an expansion mechanism, a sub-compression mechanism, and lubricating oil. A second equalizer pipe connects a side of the second hermetic vessel at a position higher than a minimum oil level to a suction side of the main compression mechanism. The space within the second hermetic vessel is isolated from the expansion mechanism and the sub-compression mechanism, and the pressure within the second hermetic vessel is not dependent upon the pressure within the expansion mechanism and the pressure within the sub-compression mechanism.03-12-2009
20110239694TURBO COMPRESSOR AND TURBO REFRIGERATOR - Provided is a turbo compressor that includes: a compressor unit compressing a gas; a motor driving the compressor unit; and a motor casing accommodating the motor. In the turbo compressor, the motor casing includes: a body portion which is molded in a cylindrical shape; an annular diameter reduced portion which is connected to at least one end portion of the body portion in the rotation axis direction of the motor and of which the diameter is reduced as it moves away from the body portion; and a flat portion which is connected to the central end portion of the diameter reduced portion and is molded in a planar shape.10-06-2011
20110016916TURBO COMPRESSOR AND REFRIGERATOR - A turbo compressor includes an impeller; compression stages having scroll chambers which introduce the refrigerant to the impeller or lead the refrigerant compressed by the rotation of the impeller to the outside; and an oil tank in which a heater is disposed and an lubricant oil is stored, and at least a part of the scroll chambers is disposed in the vicinity of the oil tank.01-27-2011
20100132399TRANSCRITICAL REFRIGERANT VAPOR COMPRESSION SYSTEM WITH CHARGE MANAGEMENT - A refrigerant vapor compression system includes a refrigerant-to-refrigerant heat exchanger economizer and a flash tank disposed in series refrigerant flow relationship in the refrigerant circuit intermediate a refrigerant heat rejection heat exchanger and a refrigerant heat absorption heat exchanger. A primary expansion valve is interdisposed in the refrigerant circuit upstream of the refrigerant heat absorption heat exchanger and a secondary expansion valve is interdisposed in the refrigerant circuit upstream of the flash tank. The flash tank functions as a refrigerant charge storage reservoir wherein refrigerant expanded from a supercritical pressure to subcritical pressure separates into liquid and vapor phases. A refrigerant vapor bypass line is provided to return refrigerant vapor from the flash tank to the refrigerant circuit downstream of the refrigerant heat absorption heat exchanger. The primary expansion valve and a flow control valve interdisposed in the refrigerant vapor bypass provide refrigerant charge management.06-03-2010
20110083467AIR CONDITIONER, AIR CONDITIONER MANUFACTURING METHOD, AND COMPRESSOR - At a time of a heating high-load operation, a harmonic current is flown in an armature winding to induction-heat rare-earth magnets, thus reducing a residual magnetic flux density. Thereby, the number of rotations of a radial gap type motor is improved. The rare-earth magnets are provided near a cooling medium passage extending substantially in parallel with a flow line of a cooling medium, so that the cooling medium recovers heat of the heated rare-earth magnets. At a time of a cooling high-load operation, a greater number of rotations are obtained with respect to the same torque command value, by a field weakening control by means of a current-phase advance.04-14-2011
20110079042NON-AZEOTROPIC REFRIGERANT MIXTURE AND REFRIGERATION CYCLE APPARATUS - Disclosed is a non-azeotropic refrigerant mixture containing tetrafluoropropane as a high-boiling refrigerant and a refrigeration cycle apparatus in which a non-azeotropic refrigerant mixture containing tetrafluoropropane as a high-boiling refrigerant circulates through a refrigeration cycle so as to avoid occurrence of negative pressure in a low-pressure circuit.04-07-2011
20110079041Vector Component for an Air-Conditioning System - Systems, methods, and devices are described for implementing and/or utilizing a vector component within an air-conditioning (a/c) system. In one embodiment, the vector component may be situated between a compressor and a condenser of the a/c system. Moreover, the vector component may receive a superheated vapor from the compressor and route the superheated vapor into one or more capillary tubes. The superheated vapor may be cooled to a liquid by exposing the superheated vapor to a sub-cooled liquid. The liquid may then be transferred to the condenser. Additionally, at least a portion of the sub-cooled liquid may be heated to a saturated vapor and routed back to the compressor, where the above process may be repeated.04-07-2011
20110239693DRIVE SHAFT STRUCTURE, TURBO COMPRESSOR, AND TURBO REFRIGERATOR - Provided is a drive shaft structure including: a drive shaft which transmits the drive force; and a seal member which is provided to come into close contact with the outer peripheral surface of the drive shaft. In the drive shaft structure, the drive shaft includes a second surface located closer to the inner side of the radial direction than the outer peripheral surface, and the second surface includes an index mark used to confirm information on the rotation of the drive shaft or information on the displacement thereof in the axial direction.10-06-2011
20110146338Heat exchanger, welding member and air conditioner - A heat exchanger includes a shell communicating with a first fluid inlet pipe and a first fluid outlet pipe, end caps coupled to ends of the shell to communicate with a second fluid inlet pipe and a second fluid outlet pipe, a plurality of tubes disposed in the shell to constitute a channel through which a second fluid flows, an end baffle located at ends of the tubes to prevent mixing of a first fluid and the second fluid, and a first plate to fill gaps between the tubes and the end baffle.06-23-2011
20100071405TWO-STAGE EXPANSION COOLING SYSTEM AND EVAPORATOR THEREOF - An evaporator, applicable to a two-stage expansion cooling system, is used for receiving a high-pressure liquid working fluid. The evaporator includes a thermal-conductive block having a channel system. The channel system includes a high-pressure channel, a low-pressure channel, and a second stage expansion channel. The second stage expansion channel has an input end and an output end. The input end is communicated with the high-pressure channel. The output end is communicated with the low-pressure channel, and has a cross-sectional area smaller than that of the low-pressure channel. The high-pressure liquid working fluid flows into the thermal-conductive block from the high-pressure channel, and then enters the second stage expansion channel through the input end. A part of the high-pressure liquid working fluid flowing out of the output end expands into a saturated low-pressure liquid working fluid and enters the low-pressure channel.03-25-2010
20100064722REFRIGERANT SYSTEM WITH PULSE WIDTH MODULATION FOR REHEAT CIRCUIT - A refrigerant system incorporating a reheat circuit is also provided with pulse width modulation control to adjust the amount of refrigerant being compressed. In particular, in any dehumidification mode of operation, by activating the pulse width modulation control, sensible and latent components of capacity can be controlled independently and with significantly better accuracy. The present invention provides the ability to precisely tailor both humidity and temperature control to the conditioned space demands utilizing less expensive components and in a more efficient manner than in the prior art.03-18-2010
20110100054Liquefier for a Heat Pump, Heat Pump, and Method for Manufacturing a Liquefier - A liquefier for a heat pump includes a liquefier space, a compressor motor and a motor fixture for holding the stationary motor part, wherein the motor further has a motor shaft and a compressor wheel connected to the motor shaft. The motor fixture is formed so that the stationary motor part is held so that it is in contact with liquefied working fluid when liquefied working fluid is filled in the liquefier space. Furthermore, the compressor wheel extends into a region of the heat pump in which a channel for gaseous working fluid to be compressed passes.05-05-2011
20110072849COMBINED REFRIGERANT COMPRESSOR AND SECONDARY LIQUID COOLANT PUMP - A compressor for a refrigerant is integrally contained in a housing with a positive displacement pump for a secondary coolant. Both the compressor and pump are driven by a common motor. In one embodiment, a linear compressor includes a reciprocating piston rod coupled at one end to a refrigerant compressor and at an opposite end to a positive displacement liquid pump. The pump circulates a secondary coolant through a thermal storage unit and heat exchanger associated with an evaporator. The evaporator is coupled to a condenser, in turn, coupled to the compressor. A conventional rotary compressor may also have a positive displacement pump coupled to the motor to provide circulation for a secondary coolant circuit.03-31-2011
20110067435REFRIGERATION CYCLE - A refrigeration cycle provided with a compressor, a condenser, a pressure reduction and expansion means, an evaporator, and an internal heat exchanger for exchanging heat between the refrigerant at the exit side of the condenser and the refrigerant at the exit side of the evaporator, wherein the refrigeration cycle uses R1234yf as the refrigerant and the amount of heat exchange by the internal heat exchanger is greater than or equal to a specific value that has been determined beforehand by a simulation or an experiment. When a currently used refrigerant is changed to a new refrigerant R1234yf, the refrigeration cycle can be operated with a refrigeration ability as same as or greater than that of refrigeration cycles using a conventional refrigerant R134a.03-24-2011
20110067434HERMETIC TYPE COMPRESSOR AND REFRIGERATION CYCLE APPARATUS - As a hermetic type compressor, a motor portion and a compression mechanism portion that are coupled to the motor portion with a rotating shaft interposed therebetween are accommodated in a closed vessel. The compression mechanism portion comprises a cylinder that comprises an internal diameter hole, and a main bearing and a sub-bearing in which a bearing hole that journals the rotating shaft is provided and the internal diameter hole of the cylinder is closed to form a compression chamber in the compression mechanism portion. The main bearing and the sub-bearing have a circular groove that is opened toward the compression chamber side, an inner circumferential surface of the circular groove is tapered such that a diameter increases gradually from the compression chamber side toward an opposite side of the compression chamber side, and a depth of the circular groove is set to 40% of a diameter of the bearing hole.03-24-2011
20110061422AIR CONDITIONER - The embodiment relates to an air conditioner. The air conditioner includes: a compressor that compresses a refrigerant; a condenser that condenses the refrigerant compressed in the compressor; an expander that expands the refrigerant condensed in the condenser; an evaporator that evaporates the refrigerant expanded in the expander; a bypass pipe that bypasses the refrigerant discharged from the condenser to an inlet side of the compressor; a refrigerant heating apparatus that heats the refrigerant flowing in the bypass pipe; and a valve that controls the refrigerant flowing in the bypass pipe, wherein the refrigerant heating apparatus includes: a refrigerant pipe in which the refrigerant flows; and a heating unit that is provided on an outer surface of the refrigerant pipe and has a carbon nanotube heating element that is heat-generated by itself by a supplied power.03-17-2011
20100300140Air Conditioning System for Cooling the Cabin of a Hybrid-Electric Vehicle - An air conditioning system for use in a hybrid-electric vehicle having an engine and a cabin. The system includes a refrigerant loop and a coolant loop. A phase change heat exchanger including a first tube in fluid communication with the refrigerant loop and a second tube in fluid communication with the coolant loop. The first and second tubes abut one another for conducting heat from the coolant in the coolant loop to the first refrigerant in the refrigerant loop when the vehicle is operating with the engine running. The phase change heat exchanger further includes a chamber abutting the first and second tubes for storing a phase change material. The phase change material conducts heat to the first refrigerant to freeze the phase change material when the vehicle is operating with the engine running and receives heat from the coolant to cool the coolant when the engine is not running.12-02-2010
20100300141REFRIGERATION APPARATUS - An air-conditioning apparatus uses carbon dioxide as a refrigerant, and includes comprises a two-stage-compression-type compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, and an intercooler. The intercooler uses air as a heat source. The intercooler is configured and arranged to cool refrigerant flowing through an intermediate refrigerant tube that draws refrigerant discharged from the first-stage compression element into the second-stage compression element. The intercooler is integrated with the heat source-side heat exchanger to form an integrated heat exchanger, with the intercooler disposed in an upper part of the integrated heat exchanger.12-02-2010
20100251760SYSTEM FOR REFRIGERATION, HEATING OR AIR-CONDITIONING TECHNOLOGY, PARTICULARLY REFRIGERATION SYSTEMS - The present disclosure relates to a system for refrigeration, heating or air-conditioning technology, particularly a refrigeration system, including a working medium circuit, which has a compressor, a condenser, an expansion valve, and an evaporator connected successively in the flow direction. Particularly stable operating behavior of the system is achieved in a simple manner in that means, which thermally couple the liquid operating medium flowing to the expansion valve to the operating medium flowing from the expansion valve to the evaporator, are provided in order to maintain the temperature of the liquid operating medium constant.10-07-2010
20100293991AIR CONDITIONING WIRING SYSTEM - A wiring system for use in an air conditioning system comprising a printed circuit board having a perimeter and wiring receptacles located proximate the perimeter and wiring connectors. In one aspect, at least some of the wiring receptacles comprise two or more wiring sub-receptacles, and each of the wiring sub-receptacles includes a slotted sub-receptacle connection pattern. Furthermore, the slotted sub-receptacle connection pattern of each of the wiring sub-receptacles is different from every other sub-receptacle connection pattern. Each of the wiring connectors includes a ridged connection pattern that is different from every other ridged connection pattern of the wiring connectors, such that a given wiring connector is receivable within only one of the wiring sub-receptacles. An air conditioning system and a method of manufacturing is also provided.11-25-2010
20100251759Liquid pressure cycle having an ejector - The liquid pressure cycle having an ejector pressurizes the liquid refrigerant of the system with a positive displacement rotary pump rather than pressurizing the vapor refrigerant with a vapor compressor. This high-pressure liquid proceeds into two pressure streams. The first stream is directed to an expansion valve then on to an evaporator for space air or other medium cooling. The second stream is directed to the driving force input port of an ejector. This high-pressure input mixes with the low-pressure output from the evaporator. The result of this mixing provides for sufficient pressure enhancement to condense the combination refrigerant vapor as it passes through the condenser. The liquid flow from the condenser proceeds back to the liquid pressure pump and the cycle is repeated.10-07-2010
20110174013Cylindrical Condenser - A vertical discharge condenser includes a generally cylindrical heat exchanger having a vertical interruption between a first and a second end of the heat exchanger, a panel enclosing the vertical interruption in the heat exchanger to form an uninterrupted generally cylindrical enclosure, a generally circular fan grille enclosing a top of the cylindrical enclosure, and a generally circular base pan enclosing a bottom of the cylindrical enclosure.07-21-2011
20080314072Air-Conditioning Unit for Mobile Devices - An air-conditioning device includes a refrigeration cycle having components such as, e.g., a compressor for compressing a refrigerant, a condenser and an evaporator. At least some of the components of the refrigeration cycle are held in their functional position by a mounting in the form of housing shells, which they share. The housing shells consists of a foamed plastic material, e.g. of expanded polypropylene (EPP). An additional metal sheet or plastic housing is not required.12-25-2008
20090217700REFRIGERATOR CONDENSER - An apparatus provides a high efficiency for refrigerator operation. The inclusion of a separate external evaporator and condenser that draws heat away from the common refrigerator condenser allows an increase in the intensity of the cooling process of the cooling agent, thereby diminishing electrical consumption, and decreasing the size and noise of the condenser. This is achieved by structuring the refrigerator condenser with the one tube for the cooling agent of the common refrigerator and another volume for evaporating the cooling substance of the external evaporator and condenser. Moreover, external system of natural cooling has a condenser that is located in the open air and connected to the evaporator with the help of vapor lines and condensed vapor lines.09-03-2009
20090000331LUBRICANT FOR COMPRESSION TYPE REFRIGERATING MACHINE AND REFRIGERATING DEVICE USING SAME - The present invention provides lubricating oil for a compression refrigerator, characterized by including an alkylene glycol or polyoxy alkylene glycol unit and a vinyl ether unit in a molecule and containing a polyvinyl ether compound having a molecular weight of 300 to 3,000. The lubricating oil for a compression refrigerator has a high viscosity index and excellent compatibility under a natural refrigerant atmosphere such as carbon dioxide.01-01-2009
20090126398Refrigeration Apparatus - A buffer container (05-21-2009
20110162409Air conditioning system for vehicle - A driving apparatus for an air conditioning system has a first and a second electrical actuators for driving air control doors, wherein the first and second actuators are accommodated in a common housing so that they are modularized to each other. The driving apparatus further has a third electrical actuator for driving another air control door, wherein the third actuator is provided at a position separated from the housing. Driving circuits for the first to third actuators are formed on a single IC chip or on a single electrical circuit board. The driving circuits formed on the IC chip or the electrical circuit board is accommodated in the housing for the first and second actuators.07-07-2011
20120240614MEDIUM VOLTAGE POWER CONTROLLER - A medium voltage power controller box is mounted on a chiller unit with the other components of the chiller system. The power controller box can be positioned on the chiller system unit to permit the power controller box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the power controller box and the motor. In addition, the power controller box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the power controller box is used to provide the necessary connections between the control panel and the power controller box.09-27-2012
20100319392CAPACITY VARYING TYPE ROTARY COMPRESSOR AND REFRIGERATION SYSTEM HAVING THE SAME - A capacity varying type rotary compressor and a refrigeration system having the same are provided. The capacity varying type rotary compressor includes a casing that contains a certain amount of oil and maintains a discharge pressure state; a motor installed in the casing that generates a driving force; one or more cylinder assembly fixed in the casing, having a compression space that compresses a refrigerant by a rolling piston that performs an orbit motion and a vane that performs a linear motion by contacting the rolling piston, and having a vane pressure chamber formed at a rear side of the vane that implements a normal driving as the vane contacts the rolling piston or a saving driving as the vane is separated from the rolling piston; and a mode switching device that selectively supplies a suction pressure or a discharge pressure to the vane pressure chamber of the cylinder assembly according to a driving mode.12-23-2010
20100281913REFRIGERATION SYSTEM - The invention relates to a refrigeration system having a refrigerant circuit which comprises a plurality of evaporator paths and a distributor distributing refrigerant, wherein the distributor comprises a housing and a controllable valve for each evaporator path. The intent is to achieve a predetermined mode of operation of the refrigeration system by simple means. To this end, it is provided that the distributor comprises a magnet arrangement controlling the valves.11-11-2010
20110107789Liquefier for a Heat Pump and Heat Pump - A liquefier for a heat pump includes a liquefier space and a process water tank. The process water tank is arranged within the liquefier space such that it is substantially surrounded by liquefied working fluid. A wall of the process water tank, however, is spaced from a wall of the process water tank so that a gap formed to communicate with the region of the heat pump in which compressed gas is present is obtained, so that the process water tank is thermally insulated from the space for liquefied working fluid via this gas-filled gap. The liquefier itself may also be surrounded by the gas region, in order to provide for inexpensive insulation of the liquefier.05-12-2011
20110113820HEAT TRANSFER TUBE FOR HEAT EXCHANGER, HEAT EXCHANGER, REFRIGERATING CYCLE APPARATUS, AND AIR CONDITIONER - To obtain a heat transfer tube for a heat exchanger or the like which can obtain predetermined heat transfer performance without increasing in-tube pressure loss.05-19-2011
20110132028TUBULAR HEAT EXCHANGER FOR MOTOR VEHICLE AIR CONDITIONERS - A tubular heat exchanger is provided for a motor vehicle air conditioner with an inner tube through which a fluid or gas can flow and an outer tube radially enclosing the inner tube subject to the formation of an intermediate space through which a flow can flow. The inner tube in this case includes, but is not limited to a quantity of stampings arranged spaced from one another and with their longitudinal extension at least partially extending in axial direction of the inner tube.06-09-2011
20100180629TURBO CHILLER, HEAT SOURCE SYSTEM, AND METHOD FOR CONTROLLING THE SAME - A turbo chiller that allows for temperature adjustment even when a target heat load is low is provided. A turbo chiller (07-22-2010
20100077793INVERTER-DEVICE BUILT-IN TYPE ELECTRIC COMPRESSOR AND VEHICLE EQUIPPED WITH THE SAME COMPRESSOR - An inverter-device built-in type electric compressor includes a compressor terminal and a direct-mounting connector, which connects the inverter-device to an external circuit, at an electric compressor side. The direct-mounting connector faces toward the electric compressor and is placed in parallel with a center axis of the electric compressor. A harness connector wired from a motor of the electric compressor is detachably and electrically connected to the compressor terminal, and the electric compressor is detachably and mechanically connected to the inverter-device.04-01-2010
20100031696REFRIGERATING COMPRESSOR AND REFRIGERATING DEVICE USING THE SAME - A refrigerating compressor includes a hermetic container accommodating oil, a motor accommodated in the container, a compressor unit provided under the motor and driven by the motor, and a vibration-proof cover. The compressor unit has a crankshaft including a main shaft and an eccentric section, a cylinder block, a piston, a connecting rod and a feed oil pipe. The cylinder block has a bearing to support the main shaft rotatably and a cylinder. The piston reciprocates in the cylinder. The connecting rod connects the piston to the eccentric section. The feed oil-pipe is fixed to eccentric section and an end thereof is dipped in oil. The vibration-proof cover is fixed to the cylinder block and surrounds the feed oil pipe with a given distance in between.02-11-2010
20110120177HEAT EXCHANGER FOR SHEDDING WATER - A microchannel heat exchanger includes a two headers and tubes that extend between the headers. Each tube has an elongated cross-section, the cross-section having a first end and an opposing second end. In one example, each tube is angled such that a line defined between the ends of each tube is angled relative to the horizontal. As the tubes are angled, water that collects on the tubes is directed away from the tubes. In another example, a plate fin directs water away from the tubes. The plate fin includes openings, and a louver including parallel vertical slots is located between each of the openings. Each tube is interference fit in one of the openings of the plate fin, positioning a louver between each tube.05-26-2011
20110120178COMPRESSOR - The present invention provides a compressor, comprising a stator (05-26-2011
20100180631TURBO-COMPRESSOR-CONDENSER-EXPANDER - This invention provides an isothermal turbocompressor and a combined turbo-compressor-condenser-expander arrangement, which includes heat-transferring blades that are mounted on, or surround, individual conduits to promote air exchange and heat transfer. In operation, the open framework rotates in free air to promote heat exchange. This optimizes contact with free air during rotation. The assembly includes a first plurality of spokes extending radially outwardly from a first central hub to an outer perimeter with first radial conduits that transport refrigerant under centrifugal force and compression from the hub to the outer perimeter. The first radial conduits include heat exchanging blades. A second plurality of spokes extend radially outwardly from a second central hub at an axial spacing from the first central hub. This second plurality of spokes each includes a second thermally-insulated conduit that transports refrigerant from the outer perimeter to the second central hub. Axial conduits extend axially at the outer perimeter, and each interconnects each first radial conduit and each second radial conduit. At least some of the plurality of axial conduits include an axial blade in thermal communication with the conduit that promotes heat exchange radially. A motor rotates a central axis of the turbo-compressor-condenser-expander.07-22-2010
20080229779MULTI-FUNCTIONAL AIR CONDITIONER - A multi-functional air conditioner has a casing, a compressor, a cooler, an evaporator, at least two fans and at least one gate controller. The casing is stored with the compressor, the cooler and the evaporator that connected by multiple pipes, has two inlets, an outlet, a first gate, a second gate, a third gate and a fourth gate. The third and fourth gates are corresponding to the cooler. The first and second gates are corresponding to the evaporator. The fans are mounted respectively on the cooler and the evaporator to generate air flow. The gate controller selectively close the first gate, the second gate, the third gate and the fourth gate to change the route of the air flow according to the function that the multi-function air conditioner intends to provide. With such an air flow route change, air flow with different condition is discharged from the casing to provide air cooling, air warming, air exhausting, air recycling and air exsiccating function.09-25-2008
20100300142HERMETIC COMPRESSOR AND FRIDGE-FREEZER - A hermetic compressor includes an airtight container containing lubricating oil and having a compression element and a motor element. The compression element compresses a refrigerant by being driven by the motor element. The compression element includes a crankshaft extending in a vertical direction and having a main shaft and an eccentric part; a block forming a compression space; a piston having a cylindrical shape and reciprocating in the compression space; and a connecting rod for transmitting the rotation of the eccentric part to the piston. The piston has its center of gravity on either the upper side or the lower side in the vertical direction with respect to a plane which passes through the central axis of the piston and is perpendicular to the crankshaft.12-02-2010
20090173102Condenser - A condenser including an inlet header and an outlet header spaced apart from each other and extending vertically, a plurality of flat refrigerant tubes arranged one above another in parallel at a spacing between the two headers and jointed at opposite ends thereof to the respective headers, and fins between respective adjacent pairs of refrigerant tubes. The inlet header admits a refrigerant into interior thereof therethrough, and the outlet header causes the refrigerant to flow out therethrough. The refrigerant admitted into the inlet header flows through the refrigerant tubes toward the outlet header. The number of refrigerant tubes positioned below the center of the refrigerant inlet with respect to the vertical direction is up to 21, preferably up to 16, more preferably up to 7. The condenser can be prevented from becoming impaired in condensation performance when the refrigerant has a compressor lubricant incorporated therein.07-09-2009
20100058799SUCTION VALVE PULSE WIDTH MODULATION CONTROL BASED ON EVAPORATOR OR CONDENSER PRESSURE - A refrigerant system is provided with a suction pulse width modulation valve, and a pulse width modulation control for controlling this valve. System pressures, such as the pressure on the evaporator and the condenser are monitored. The measured system pressures are maintained within a band of acceptable lower and upper limits. As the pulse width modulation control cycles the valve, the refrigerant pressures in the evaporator and the condenser tend to fluctuate. The control ensures those fluctuations are within the limits by controlling the duty cycle of the valve.03-11-2010
20110016915HIGH EFFICIENCY DC COMPRESSOR AND HVAC/R SYSTEM USING THE COMPRESSOR - A DC powered compressor and an HVAC/R system having the compressor are disclosed. The compressor comprises an AC powered compressor and a DC/AC inverter configured to receive power from a DC power source and to provide the power to the AC compressor.01-27-2011
20120036886INTERNAL HEAT EXCHANGER FOR A MOTOR VEHICLE AIR-CONDITIONING SYSTEM - A heat exchanger is provided for a motor vehicle air-conditioning system with an outer tube through which a fluid and/or a gas can flow and at least one inner tube through which a fluid and/or gas can flow, which at least in sections and subject to the formation of an intermediate space through which a flow can flow runs within the outer tube and in a first region located within the outer tube branches off into at least two heat exchanger tubes.02-16-2012
20120036885EXPANSION VALVE COMPRISING BIASING MEANS - An expansion valve (02-16-2012
20120036884EXPANSION VALVE AND AIR CONDITIONER FOR VEHICLES HAVING THE SAME - This document relates to an expansion valve and an air conditioner for vehicles having an expansion valve, which can branch and expand refrigerant supplied from a condenser, discharge the branched and expanded refrigerant to an evaporator, and differently control the degree of opening of first and second orifices through first and second valves varied in their positions by a single shaft, so that flow rates of refrigerant expanded while passing through the first and second orifices differ from each other, thereby differently providing refrigerant flow rates into evaporation parts of the evaporator, enhancing cool efficiency of the air conditioner, and reducing the number of components and manufacturing expenses since just one expansion valve is used.02-16-2012
20120042685PRECONDITIONED AIR UNIT WITH SELF-CONTAINED COOLING MODULES - A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a main unit with a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft, a blower connected with the flow duct for generation of an air flow from the air inlet toward the air outlet, and a plurality of compartments, each of which is configured for accommodation of a self-contained cooling module comprising at least one refrigeration system, each of which includes at least one compressor, at least one condenser, at least one expansion valve, and at least one evaporator connected in a flow circuit containing a refrigerant, and wherein each compartment is further configured so that the at least one evaporator interacts with the air flow in the flow duct when the self-contained cooling module is installed in the compartment, and wherein at least one self-contained cooling module is installed in the plurality of compartments.02-23-2012
20120060548REFRIGERATION CYCLE APPARATUS - A refrigeration cycle apparatus which is capable of performing matching of the volumetric flow rate without performing pre-expansion it obtained. A refrigeration circuit includes a compression unit including a main compressor and a second compressor, a gas cooler, an expansion mechanism, and an evaporator interconnected with pipes, and a sub-compression mechanism driven by power recovered by the expansion mechanism, a suction side of the sub-compression mechanism is connected to a compression process of the compression unit, a discharge side of the sub-compression mechanism is connected to an inlet side of the gas cooler, and flow rate of refrigerant flowing into the sub-compression mechanism is controlled.03-15-2012
20120060547MOTOR FOR COMPRESSOR, COMPRESSOR AND REFRIGERATION CYCLE APPARATUS - A motor for a compressor comprises: a stator including a plurality of slots each having a slot opening, teeth formed between neighboring slots; and a rotor arranged at an inner side of the stator, a number of permanent magnet holes, the number of which is same as a number of magnetic poles, and permanent magnets. The rotor includes at least a first pair of slits, provided at an outer peripheral core part of the permanent magnet inserting hole, extending orthogonally to the inserting hole, arranged symmetrically with respect to a magnetic pole center, and a distance between the first pair of slits is smaller than a width of the teeth; and a second pair of slits, arranged at an outer inter-pole side of the first pair of slits, provided at a position where the tooth and the magnetic pole center of the rotor match, and facing the slot openings.03-15-2012
20090193842TURBO COMPRESSOR AND TURBO REFRIGERATOR - A turbo compressor is provided with a first compression stage that draws in and compresses a fluid, and a second compression stage connected to the first compression stage via a rotation shaft, that further compresses the compressed fluid from the first compression stage. The first compression stage and the second compression stage are arranged adjacent to each other with their backsides facing each other. A discharge port of the first compression stage, and a suction port of the second compression stage are formed in the same plane, and there is provided a U-shaped pipe that connects the first discharge port and the second suction port.08-06-2009
20120204595HEAT EXCHANGER AND VEHICLE AIR CONDITIONING APPARATUS PROVIDED WITH THE SAME - There is provided a heat exchanger 08-16-2012
20110094257MICRO-CHANNEL HEAT EXCHANGER SUITABLE FOR BENDING - A micro-channel heat exchanger for use in a refrigerant vapor compression system and suitable for bending has two or more separate heat exchange panels joined by a brace. Bending occurs at the brace to eliminate or reduce bending loads and forces on the inlet headers, outlet headers, and heat exchange tubes of the head exchanger to prevent excessive damage to the heat exchanger components.04-28-2011
20110094258HEAT EXCHANGER AND AIR CONDITIONER PROVIDED WITH HEAT EXCHANGER - A heat exchanger provided with a plurality of plate-like fins 04-28-2011
20100024468REFRIGERATION UNIT COMPRISING A MICRO CHANNEL HEAT EXCHANGER - The present disclosure provides a refrigeration unit that can be used in a transport cooling application. The unit comprises a micro-channel heat exchanger (MCHX), a compressor, an evaporator, and a thermostatic expansion valve. The MCHX is coated with an acrylic composition.02-04-2010
20110179821MEDIUM VOLTAGE STARTER FOR A CHILLER UNIT - A single medium voltage starter box is mounted on a chiller unit with the other components of the chiller system. The starter box can be positioned on the chiller system unit to permit the starter box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the starter box and the motor. In addition, the starter box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the starter box is used to provide the necessary connections between the control panel and the starter box.07-28-2011
20120159985FORMED ALUMINUM FOIL BASED HOSE - A hose and method of forming the hose are disclosed. The hose includes a first end portion for coupling the hose to a first component and a second end portion for coupling the hose to a second component. The first end portion and the second end portion are connected by a length of the hose. The hose has two refrigerant barrier layers extending along its length between the first end portion and the second end portion, and a tubular layer surrounding the second refrigerant barrier layer. At least one of the refrigerant barrier layers is a metal barrier layer. The length of hose has a flexible hose section and a substantially inflexible hose section. The flexible hose section is located between the substantially inflexible hose section and one of the end portions of the hose.06-28-2012
20120159984Arrangement For Starting A Single Phase Induction Motor - The motor (06-28-2012
20120159983INDUCTION MOTOR, COMPRESSOR AND REFRIGERATING CYCLE APPARATUS - The efficiency of an induction motor is improved while suppressing the generation of magnetic flux saturation of a rotor core. In an induction motor, “a magnetic path width of a rotor” which is the product of a circumferential width of a rotor tooth formed in the rotor and the number of rotor teeth is equal to or larger than “a magnetic path width of a stator” which is the product of a circumferential width of a stator tooth formed in the stator and the number of stator teeth.06-28-2012
20100206001VEHICLE AIR CONDITIONING SYSTEM - Disclosed is a vehicle air conditioning system including not less than two evaporators 08-19-2010
20120210746PLATE-TYPE HEAT PUMP AIR CONDITIONER HEAT EXCHANGER FOR A UNITARY HEAT PUMP AIR CONDITIONER - A plate-type heat exchanger having a first heat exchanger portion configured to receive a refrigerant flow and a hot side coolant flow having a lower temperature than the refrigerant flow, a second heat exchanger portion configured to receive the refrigerant flow exiting from the first heat exchanger portion and a cold side coolant flow having a higher temperature than the refrigerant flow exiting from the first heat exchanger portion, and an internal heat exchanger portion sandwiched between the first heat exchanger portion and the second heat exchanger portion. The refrigerant flow through the plate type heat exchanger is in non-contact thermal communication with the hot side coolant flow and the cold side coolant flow. The cold side coolant flow transfers heat energy to the refrigerant, which in turn transfer that heat energy to the hot side coolant flow.08-23-2012
20120174617REFRIGERANT COMPRESSOR AND REFRIGERATION CYCLE APPARATUS - A refrigerant compressor includes a compression unit having a roller and a vane for compressing refrigerant. The vane has a film having first to fourth layers on its metallic base member. The first layer is made of chromium. The second layer is made of chromium and tungsten-carbide. The third layer is made of metal-containing amorphous-carbon containing at least tungsten or tungsten-carbide. The fourth layer is made of non-metal-containing amorphous-carbon containing carbon and hydrogen. In the second layer, chromium content-rate on a first-layer side is larger than on a third-layer side, and tungsten-carbide content-rate on the third-layer side is larger than on the first-layer side. In the third layer, content-rate of the at least tungsten or tungsten-carbide on a second-layer side is larger than on a fourth-layer side. The roller with which an end-edge of the vane slidably-contacts is made of flake graphite cast iron containing molybdenum, nickel and chromium.07-12-2012
20120247147HEAT EXCHANGER SYSTEM - The invention relates to a heat exchanger system (10-04-2012
20120247146REFRIGERANT DISTRIBUTOR AND REFRIGERATION CYCLE DEVICE - A refrigerant distributor includes a body portion defining a swirl space, a refrigerant inflow port, and first and second refrigerant outflow ports which causes refrigerant in the swirl space to flow out and distributes the refrigerant to components of a refrigeration cycle device. When a line connecting swirl centers of refrigerant swirling in the swirl space is taken as a swirl center line, the refrigerant swirls in the swirl space such at a velocity of a swirl flow that more vapor-phase refrigerant exists on an inner radius side than on an outer radius side and the velocity of swirl flow at the swirl center line on both end sides are different from each other. The first refrigerant outflow port is arranged at the one end side, and the second refrigerant outflow port is arranged at the other end side, on an extended line of the swirl center line.10-04-2012
20100011804HEAT EXCHANGER DESIGN FOR IMPROVED PERFORMANCE AND MANUFACTURABILITY - A parallel flow heat exchanger is disclosed having heat transfer tubes with a plurality of relatively small channels, which are aligned in a parallel manner, and wherein the heat transfer tubes are in fluid communication with at least one manifold structure, are received in manifold wall openings and are attached to the manifold structure by brazing process The manifold walls and/or the tubes are modified to minimize the likelihood of brazing material plugging or at least partially blocking any of the plurality of channels In one feature, the openings in the manifold structure are formed by deforming the material of the manifold structure outwardly In another feature, the edges of the heat transfer tubes may be formed such that the outermost end channels within each heat transfer tube extend farther inwardly than do the central channels Various design configurations are disclosed01-21-2010
20100011803HORIZONTAL DISCHARGE AIR CONDITIONING UNIT - Heating, ventilating, air conditioning or refrigeration (HVAC&R) systems and associated outdoor horizontal discharge units are provided. The units include a heat exchanger. The heat exchanger includes a plurality of manifolds. The heat exchanger also includes a plurality of multichannel tubes in fluid communication with the manifolds. Each multichannel tube includes a plurality of parallel flow paths through which an internal fluid flows. Each flow path extends lengthwise through its respective multichannel tube. The heat exchanger further includes a plurality of fins disposed between the multichannel tubes for transferring heat between the external air and the internal fluid flowing through the flow paths. The units also include a fan configured to blow air horizontally through the heat exchanger such that the air discharges the unit horizontally through at least one side of the unit.01-21-2010
20120073323REFRIGERATION SYSTEM CONNECTION FITTING - A disclosed connector assembly for a refrigerant system mounted within an aircraft includes a metal seal disposed within a seal bore of a connector and compressed against a seal face of a nipple secured to the connector by a threaded member. The connector includes a seal bore that receives the metal seal with the inner portion of the seal bore open to the bore. In one example, the connector and nut are formed from aluminum and the nipple is formed from stainless steel and includes an aluminum coating applied to surfaces in contact with the metal seal and the connector.03-29-2012
20120222446Air-Conditioning System for a Vehicle - An air-conditioning system for a vehicle includes an air-conditioning apparatus having a compressor 09-06-2012
20120255323AIR CONDITIONER - An air conditioner is provided. The air conditioner may include a compressor that compresses a refrigerant, an outdoor heat-exchanger that heat-exchanges with the refrigerant discharged from the compressor according to a first operation mode, an indoor heat-exchanger that heat-exchanges with the refrigerant discharged from the compressor according to a second operation mode, and an expander that decompresses the refrigerant passing through the outdoor heat-exchanger or the indoor heat-exchanger. The expander may include a first decompression portion disposed at an outlet side or an inlet side of the outdoor heat-exchanger, the first decompression portion having a first inner diameter, and a second decompression portion connected to the first decompression portion in series, the second decompression portion having a second inner diameter greater than the first inner diameter.10-11-2012
20120227438PLATE HEAT EXCHANGER AND HEAT PUMP APPARATUS - An upper heat transfer plate and a lower heat transfer plate adjacent to each other are corrugated in a wave pattern. Between these plates, intersection points are formed at intersections of a plurality of bottom edge lines representing bottoms of the wave pattern of the upper heat transfer plate, and the top edge lines representing tops of the wave pattern of the lower heat transfer plate. Each of the bottoms of the wave pattern represented by the bottom edge lines and each of the tops of the wave pattern represented by the top edge lines come into contact with each other at respective intersection points. The intersection point at an end closest to an outer periphery along the long side among the intersection points on one of the bottom edge lines is formed at a distance of 3 to 4.5 mm from the outer periphery along the long side.09-13-2012
20120227437STATIONARY VOLUME RATIO ADJUSTMENT MECHANISM - A screw compressor with a volume ratio adjustment mechanism. The volume adjustment mechanism is a penetration in the housing of a screw compressor. The penetration includes one or more apertures. The apertures provide a flow path between the compressor outlet and an interlobe region of the screw compressor rotors. A member resides in the penetration and is movable from a first position in which the apertures are blocked and the flow path is closed and a second position in which the apertures are not blocked and the flow path is open. By unblocking the apertures and opening the flow path, the volume ratio can be adjusted.09-13-2012
20120260691MULTI-CYLINDER ROTARY COMPRESSOR AND REFRIGERATION CYCLE APPARATUS - A compression mechanism units include cylinder chambers into which a low-pressure gas is introduced, vanes contained in a vane groove, and a spring body that always causes compression operation in the cylinder chambers by providing an elastic force to a rear-end portion of one of the vanes, includes a pressure switching mechanism that switches to perform compression operation by guiding a high-pressure gas/not to perform the compression operation by guiding a low-pressure gas, is provided with a lubricating oil communication path communicatively connecting a oiling groove and a oil stagnant portion, and opposing the oiling groove to a portion other than the lubricating oil communication path when the vanes are in a top dead center position.10-18-2012
20080302129Refrigeration system for transcritical operation with economizer and low-pressure receiver - A refrigeration apparatus for transcritical operation includes a gas cooler, an aftercooler, an evaporator with a low-pressure liquid separator, a compressor, a first controllable throttling device and interconnecting piping between the mentioned components and in addition a second controllable throttling device and an intercooler that comprises two flow paths separated by heat exchanging surfaces. A first flow path inlet of the intercooler is connected to the gas cooler outlet. A first flow path outlet of the intercooler is connected to the aftercooler inlet. A second flow path inlet of the intercooler is connected to the outlet of the second throttling device. A second flow path outlet of the intercooler is connected to the economizer port of the compressor. The second throttling device inlet is connected to the piping either upstream or downstream of the aftercooler. The second throttling device outlet is connected to the second flow path inlet of the intercooler.12-11-2008
20100024469Refrigerating cycle apparatus - A refrigerating cycle apparatus includes a circulation refrigerant, a compressor, a condenser, an expansion valve, an evaporator, and an internal heat exchanger. The internal heat exchanger is disposed to perform heat exchange between a high pressure circulation refrigerant flowing from the condenser to the expansion valve and a low pressure circulation refrigerant flowing from the evaporator and the compressor. The circulation refrigerant has a property indicating an isentropic line having a gradient greater than a gradient of an isentropic line of a R134a refrigerant and a saturation characteristic curve having a two-phase region enthalpy width smaller than a two-phase region enthalpy width of the R134a refrigerant, on a p-h chart.02-04-2010
20100326128FLUID MACHINE - A fluid machine includes an inflow passageway arranged and configured to introduce fluid from outside into inner and outer fluid chambers of a first eccentric rotation mechanism, a communication passageway arranged and configured to introduce fluid discharged from the inner and outer fluid chambers of the first eccentric rotation mechanism into inner and outer fluid chambers of a second eccentric rotation mechanism, and an outflow passageway arranged and configured to allow fluid discharged from the inner and outer fluid chambers of the second eccentric rotation mechanism to flow to outside. Each of the first and second eccentric rotation mechanisms preferably includes a cylinder, a piston, and a blade. A drive shaft has a main shaft portion and first and second eccentric portions arranged to engage the first and second eccentric rotation mechanisms.12-30-2010
20100326127Air conditioner for vehicle with heat pump cycle - An air conditioner for a vehicle includes a vapor compression refrigeration cycle configured to have a heat pump cycle for heating air to be blown into an interior of a vehicle compartment, and a heating member for heating the air using a coolant of an internal combustion engine of the vehicle as a heat source. In the air conditioner, an operation request signal is output by an air conditioning controller to the internal combustion engine when an outside air temperature is lower than a predetermined threshold.12-30-2010
20110030419SELF-STARTING PERMANENT MAGNET SYNCHRONOUS MOTOR AND COMPRESSOR AND REFRIGERATION CYCLE USING THE SAME - There is provided a self-starting permanent magnet synchronous motor in which a center axis of magnetic poles of a rotor is assumed to be a d axis, an axis deviated from the magnetic pole center axis by an electric angle of 90 degrees is assumed to be a q axis, at least two or more starting bars which are arranged near the d axis are arranged on a bore side of the bars near the q axis and are arranged in parallel with the q axis, so that a stable starting torque can be generated irrespective of a generating position of a stator magnetic flux which changes due to applying timing of a power source and a phase of a voltage, and a vibration/noises at the time of a stationary operation can be reduced.02-10-2011
20120297819METHODS AND SYSTEMS FOR PROVIDING COMBINED BLOWER MOTOR AND DRAFT INDUCER MOTOR CONTROL - A control system is described that includes a first rotating machine, a second rotating machine, and a motor controller physically mounted to and communicatively coupled with the first rotating machine and communicatively coupled with the second rotating machine. The motor controller includes a first PWM generator operable to generate a first set of pulse width modulated signals for application to the first rotating machine, and a second PWM generator operable to generate a second set of pulse modulated signals for application to the second rotating machine.11-29-2012
20110226005DISTRIBUTOR, AND EVAPORATOR AND REFRIGERATING MACHINE WITH THE SAME - Provided are a distributor having a distribution tube having an inner surface formed as a curved surface, a plurality of distribution holes which are formed in a lower semicircular region of the distribution tube with respect to a horizontal line of the distribution tube and are arranged to be symmetrical about a vertical line of the distribution tube and a connection hole provided in the distribution tube so that the distribution tube is connected to a connection tube, an evaporator and a refrigerating machine with the distributor. A perforated plate may be fixed to an inside of the distribution tube so as to block a flow path of a cooling medium.09-22-2011
20110239695TURBO COMPRESSOR AND TURBO REFRIGERATOR - A turbo compressor having an impeller and a rotary shaft connected to the impeller, the turbo compressor including: a positioning unit that positions the impeller and the rotary shaft in a direction orthogonal to an axis of the rotary shaft; and a rotation regulating unit installed at a location different from the positioning unit and regulating relative rotation between the impeller and the rotary shaft around the axis, in which the rotation regulating unit includes an impeller-side regulating unit integrally formed with the impeller and a shaft-side regulating unit integrally formed with the rotary shaft and locked to the impeller-side regulating unit.10-06-2011
20110265510RECIPROCATING COMPRESSOR AND REFRIGERATING APPARATUS HAVING THE SAME - Disclosed are a reciprocating compressor and a refrigerating apparatus having the same, a ball bearing (11-03-2011
20100229595COMPRESSOR AND REFRIGERATING APPARATUS - A compressor includes a casing, a screw rotor fitted in the casing, at least one economizer port, and a control unit. The at least one economizer port is arranged to discharge refrigerant into compression chambers formed between the casing and the screw rotor. The control unit is configured to advance timing of opening of the at least one economizer port to the compression chambers in accordance with increase in rotating speed of the screw rotor.09-16-2010
20120279251REFRIGERATION APPARATUS - A refrigeration apparatus includes: a refrigerant circuit to which a compressor is connected, and which performs a refrigerating cycle; an electronic part including a power module; and a cooling member in which a refrigerant of the refrigerant circuit flows, and which contacts the power module so that the power module is cooled by the refrigerant. The cooling member of the refrigeration apparatus is provided with a thermal insulation layer that prevents cold heat of the refrigerant flowing in the cooling member from being transferred to the outside from at least a non-contact surface other than a contact surface of the cooling member with the power module.11-08-2012
20110132029Isolation of Unit Mounted Drive From Chiller Vibrations - A mounting bracket is configured to isolate a drive module of a compression type chiller assembly from vibrations. The mounting bracket includes a bracket plate configured to be attached to a chiller assembly component adjacent to the drive module, a mounting plate transversely attached to the bracket plate and configured to be connected to a rail extending along a bottom side of the drive module, and an isolator pad arranged generally over the mounting plate such that the pad is configured to be interposed between the mounting plate and the rail of the drive module.06-09-2011
20110146337AIR CONDITIONING SYSTEM - An air conditioning system is mainly provided with comprises an evaporator, a compressor, a condenser, a valve and an energy recovery device. The compressor is fluidly connected to the evaporator to compress low-pressure refrigerant exiting the evaporator to high-pressure refrigerant. The condenser is fluidly connected to the compressor to receive the high pressure refrigerant and dissipate heat therefrom. The valve controls flow of high pressure refrigerant exiting the condenser. The energy recovery device includes a movable expander having an inlet and an outlet. The inlet is fluidly connected to the valve to receive the high pressure refrigerant. The movable expander phase changes the refrigerant from high pressure refrigerant at the inlet to low pressure refrigerant at the outlet. The energy recovery device extracts work from movement of the movable expander due to the phase change of the refrigerant from the high pressure refrigerant to the low pressure refrigerant.06-23-2011
20110232324TURBO COMPRESSOR, TURBO REFRIGERATOR, AND METHOD OF MANUFACTURING TURBO COMPRESSOR - A turbo compressor includes an impeller fixed to one end portion of a rotation shaft by a predetermined fastening member, and a regulating portion which is used to regulate rotation of the rotation shaft during fastening of the fastening member and is provided in the other end portion of the rotation shaft. The regulating portion is formed as a recessed portion recessed from an end surface of the other end portion of the rotation shaft.09-29-2011
20130139541HEAT EXCHANGER FOR A MOTOR VEHICLE AIR CONDITIONING SYSTEM - A heat exchanger for a motor vehicle air conditioning system is provided. The heat exchanger includes at least one inner tube and an outer tube, which at least regionally envelops an inner tube to form a gap through which a heat exchanger medium can flow. The inner tube can include two at least regionally wound and nested tube sections.06-06-2013
20120247145Heat Exchanger - The invention relates to a heat exchanger for exchanging heat between a first (HP) and a second (BP) fluids. According to the invention, said exchanger comprises a plurality of modules (10-04-2012
20130111943NON-AZEOTROPIC MIXED REFRIGERANT CYCLE AND REFRIGERATOR EQUIPPED THEREWITH - A non-azeotropic mixed refrigerant cycle and a refrigerator equipped with the same are disclosed. The non-azeotropic mixed refrigerant cycle includes a first refrigerant tube to guide a refrigerant from a condenser to a first evaporator, a second refrigerant tube to guide the refrigerant from the first evaporator to a second evaporator, a third refrigerant tube to guide the refrigerant from the second evaporator to a compressor. A downstream portion of the first refrigerant tube is arranged within the second refrigerant tube, to form a first heat exchanger having a double tube structure. An upstream portion of the first refrigerant tube is arranged within the third refrigerant tube, to form a second heat exchanger having a double tube structure. Thus, the first and second heat exchangers are simplified.05-09-2013
20130091892MANUAL Vi ADJUSTMENT MECHANISM FOR SCREW COMPRESSORS - A variable capacity screw compressor for use in a refrigeration system is provided. Compressed refrigerant gas from the compressor is expelled into a discharge port in fluid communication with the refrigeration circuit. The volume associated with the discharge port can be periodically varied, allowing the efficiency of the compressor to be varied periodically. The discharge port volume includes a penetration that houses a movable member or plug that permits the volume to be periodically varied. This movable member is accessible from the exterior of the compressor housing to adjust the position of the movable member within the discharge port volume. The movable member may be adjusted to a full open position in which the discharge port volume is maximized, to a full closed position in which the discharge port volume is minimized, and to any position between full open and full closed.04-18-2013
20130125578AIR CONDITIONER - An air conditioner is provided. The air conditioner may include a compressor, a condenser, an expansion device and an evaporator. The condenser or the evaporator may include a heat exchange tube formed of an aluminum material and allowing refrigerant to flow therein, and a fin connected to the heat exchange tube, the fin being formed of the same metal material as that of the heat exchange tube so as to prevent potential corrosion of the heat exchange tube.05-23-2013
20080202155Closed-Loop Dehumidification Circuit For Refrigerant System - A closed-loop reheat circuit decoupled from a main refrigerant circuit is provided as part of a refrigerant system. In the closed-loop reheat circuit refrigerant is flown through an auxiliary heat exchanger, at which it transfers heat to refrigerant in the main circuit, increasing its cooling and dehumidification potential prior to entering an evaporator. The closed-loop circuit also includes a reheat heat exchanger that is placed in the path of at least a portion of airflow having passed over an evaporator. The reheat heat exchanger reheats air supplied to a conditioned space to a desired temperature after sufficient amount of moisture has been removed from the air in the evaporator to provide a comfortable humidity level. By utilizing the closed-loop reheat circuit, a control for the overall refrigerant system becomes less complex and more flexible, and the refrigerant system operation turns out to be more reliable and satisfying a variety of environmental conditions and potential applications. Various features and options of the decoupled reheat circuit concept are also disclosed.08-28-2008
20080202154Refrigeration Apparatus - Refrigeration apparatus which includes: an evaporator (08-28-2008
20100058798COOLANT-CIRCULATION COOLING DEVICE FOR COMPUTER SERVO - A coolant-circulation cooling device is provided for cooling a plurality of computer servos, including a compressor, a condenser, a coolant reservoir, an evaporation coil, a cooling head, and a pump. The coolant reservoir is provided with the evaporation coil in a wound condition and connected to the compressor and the condenser to form a closed refrigeration circulation system. The cooling head is connected via piping to the coolant reservoir and can be directly attached to a heat generation element to remove heat therefrom by a circulation of a coolant from the coolant reservoir to the cooling head by being driven by the pump. The coolant circulating back to the coolant reservoir 03-11-2010
20080196446Integrated unit for refrigerant cycle device - In an integrated unit for a refrigerant cycle device, at least one evaporator is integrated with an ejector having a nozzle portion for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn. In the integrated unit, an insertion hole is provided in a longitudinal end surface of a tank of the evaporator such that the ejector is inserted from the insertion hole into the tank, and a plug for sealing the insertion hole is provided. Furthermore, a spacer is configured to have a gap between the plug and the ejector, and a fixing member is disposed between the longitudinal end surface of the tank and an expansion valve, for fixing the expansion valve to the longitudinal end surface of the tank. In the integrated unit, at least one of the fixing member, the plug, and the spacer is made of a resin material.08-21-2008
20080196445Variable Speed Compressor Motor Control for Low Speed Operation - A variable speed drive is provided for a compressor in a refrigerant system. When a low load situation has been determined by the refrigerant system controls, the variable speed drive moves the compressor to a lower speed mode of operation. In this case, if a speed is so low that it cannot ensure adequate oil lubrication of the compressor elements, then the motor speed is periodically increased to a level that will ensure proper lubrication. In this manner, a variable speed drive compressor can be operated at an extremely low speed to precisely match load demand on a refrigerant system. The invention can be extended beyond refrigerant system applications and to any oil-lubricated compressors whose lubrication is speed dependant.08-21-2008
20110219816MOTOR DRIVE DEVICE, AND COMPRESSOR AND REFRIGERATOR USING SAME - Phase correction unit (09-15-2011
20110219815HEAT TRANSFER COMPOSITIONS AND METHODS - Compositions, methods and systems which comprise or utilize a multi-component mixture comprising: (a) from about 10% to about 35% by weight of HFC-32; (b) from about 10% to about 35% by weight of HFC-125; (c) from about 20% to about 50% by weight of HFO-1234ze, HFO-1234yf and combinations of these; (d) from about 15% to about 35% by weight of HFC-134a; and optionally (e) up to about 10% by weight of CF3I and up to about 5% by weight of HFCO-1233ze, with the weight percent being based on the total of the components (a)-(e) in the composition09-15-2011
20110219814TUBULAR HEAT EXCHANGER FOR MOTOR VEHICLE AIR CONDITIONERS - A tubular heat exchanger is provided for a motor vehicle air conditioner with an inner tube through which a fluid or gas can flow and an outer tube radially enclosing the inner tube subject to the formation of an intermediate space through which a flow can flow. The inner tube and the outer tube are at least radially fixed to each other by means of a number of stampings radially worked into the outer tube.09-15-2011
20110219813TURBO COMPRESSOR AND TURBO REFRIGERATOR - A turbo compressor according to the present invention includes: a flow rate adjustment section which adjusts the flow rate of gas that is introduced into an impeller; a driving section which drives the flow rate adjustment section; and a power transmission shaft which transmits power that is generated by the driving section to the flow rate adjustment section, wherein the turbo compressor further includes a frame which is provided to surround the flow rate adjustment section, and the frame has an intake port for gas that is introduced into the impeller and a hole portion in which the power transmission shaft is provided passing through.09-15-2011
20110219812TURBO COMPRESSOR AND TURBO REFRIGERATOR - Provided is a turbo compressor configured to compress a gas in cooperation with a rotatable impeller and a diffuser formed around the impeller and to discharge the compressed gas to the outside thereof through a scroll chamber communicating with the diffuser, the turbo compressor including: an impeller casing which is formed by integrally molding a body portion surrounding the impeller and forming a part of a the scroll chamber and a partition plate provided at the rear surface side of the impeller; and a shroud cover which is provided at the inside of the body portion to surround the impeller and forming the scroll chamber in cooperation with the body portion.09-15-2011
20110247357TURBO REFRIGERATOR - A turbo refrigerator includes a condenser that cools and liquefies a compressed refrigerant, an evaporator that vaporizes the liquefied refrigerant and takes away heat of vaporization from a cooling object, thereby cooling the cooling object, and a turbo compressor that compresses the refrigerant vaporized by the evaporator by rotation of an impeller driven to rotate by an electric motor, and supplies the compressed refrigerant to the condenser. Moreover, the turbo refrigerator includes a braking device that operates the electric motor as a generator when the impeller is urged to rotate by the vaporized refrigerant, so as to brake the rotation of the impeller.10-13-2011
20130145792Air Conditioning System for Vehicles - Provided is an air conditioning system for vehicles, this air conditioning system being configured in such a way that it is possible to perform air conditioning for separate purposes, such as for cooling a driver, this type of air conditioning being extremely efficient in terms of energy, and that even if part of the air conditioning system is installed in a vehicle cabin, it is possible to meet requirements for securing a space in the vehicle cabin. The aforementioned air conditioning system for vehicles comprises a refrigeration circuit provided with a compressor, a condenser, an expansion means, and an evaporator, and is characterized in that the compressor and the condenser are disposed in an in-vehicle area outside the vehicle cabin, and that the expansion means and the evaporator are locally disposed in one or more selected specific regions in the vehicle cabin, preferably in such a way as to be incorporated into units.06-13-2013
20130145791REFRIGERATION SYSTEM - A refrigeration system using CO2 as a refrigerant includes a receiver having a liquid outlet connected to expansion valves, which are connected to evaporators, which are connected to the suction side of the compressor. The receiver includes a second gas outlet connected to a second pressure reduction device, to reduce the energy consumption in CO2 cooling systems and to protect the compressors against liquid CO2 by heating the suction gas. The second pressure reduction device is connected by tubing to a first heat exchanging device, which is integrated in the receiver, so that gas that is evaporated in the top of a receiver can be used for cooling the liquid part of the same receiver.06-13-2013
20130174601ESTIMATION APPARATUS OF HEAT TRANSFER MEDIUM FLOW RATE, HEAT SOURCE MACHINE, AND ESTIMATION METHOD OF HEAT TRANSFER MEDIUM FLOW RATE - A flow rate of a heat transfer medium is computed without a flow meter. In a control apparatus (07-11-2013
20100307190REFRIGERATION SYSTEM - The invention relates to a refrigeration system comprising a refrigerant circuit provided with a plurality of evaporator paths and a distributor (12-09-2010
20130186129REFRIGERATOR - A refrigerator is provided. The refrigerator includes a compressor configured to compresses a refrigerant, a condenser configured to condense the refrigerant compressed by the compressor, a first evaporator and a second evaporator configured to evaporate the refrigerant condensed by the condenser, a distributor configured to distribute the refrigerant condensed by the condenser to at least one of the first evaporator and the second evaporator, a plurality of first refrigerant channels configured to supply the refrigerant distributed from the distributor to the first evaporator, at least one second refrigerant channel configured to supply the refrigerant distributed from the distributor to the second evaporator and a capillary tube disposed in each of the first refrigerant channels and the at least one second refrigerant channel.07-25-2013
20130186130INDUCTION MOTOR, COMPRESSOR AND REFRIGERATING CYCLE APPARATUS - The efficiency of an induction motor is improved while suppressing the generation of magnetic flux saturation of a rotor core. In an induction motor, “a magnetic path width of a rotor” which is the product of a circumferential width of a rotor tooth formed in the rotor and the number of rotor teeth is equal to or larger than “a magnetic path width of a stator” which is the product of a circumferential width of a stator tooth formed in the stator and the number of stator teeth.07-25-2013
20130186131Air-Conditioning Loop Comprising A Devise For Receiving A Refrigerant - The subject of the invention is an air-conditioning loop (07-25-2013
20120017635AIR CONDITIONING SYSTEM - An air conditioning system is provided with mainly an evaporator, a compressor, a condenser and an energy recovery device. The compressor is fluidly connected to the evaporator to compress low-pressure refrigerant exiting the evaporator to high-pressure refrigerant. The condenser is fluidly connected to the compressor to receive the high pressure refrigerant and dissipate heat therefrom. The energy recovery device is configured to extract work from refrigerant flowing therethrough. The energy recovery device includes a movable expander and a valve. The movable expander has an inlet fluidly connected to the condenser to receive high pressure refrigerant exiting the condenser, an outlet fluidly connected to the evaporator to deliver low pressure refrigerant thereto and a chamber fluidly connected between the inlet and the outlet. The valve is configured to control a flow rate of high pressure refrigerant flowing from the inlet to the chamber.01-26-2012
20120017634Variable Capacity Screw Compressor and Method - A variable capacity screw compressor comprises a suction port, at least two screw rotors and a discharge port being configured in relation to a selected rotational speed that operates at least one screw rotor at an optimum peripheral velocity that is independent of a peripheral velocity of the at least one screw rotor at a synchronous motor rotational speed for a rated screw compressor capacity. A motor is configured to drive the at least one screw rotor at a rotational speed at a full-load capacity that is substantially greater than the synchronous motor rotational speed at the rated screw compressor capacity. A variable speed drive receives a command signal from a controller and generates a control signal that drives the motor at the selected rotational speed. A method for sizing at least two variable capacity screw compressors and a refrigeration chiller incorporating a variable capacity screw compressor are separately presented.01-26-2012
20130205826COOLING APPARATUS - A cooling apparatus having a closed cooling circuit for cooling objects to semi-cryogenic or cryogenic temperatures includes a compressor to compress a gaseous coolant, and from which the coolant exits in a compressed gaseous state, an after-cooler connected downstream from the compressor, whereby the coolant exits largely in gaseous form, a counterflow heat exchanger having a feed line and return line arranged in such a way that the compressed coolant is liquefied in the feed line as the relieved coolant flowing through the return line is being heated. A cooling head that is connected with the feed line and return line. A coolant can flow through the cooling head whereby the coolant evaporates. The cooling head is arranged in a vacuum chamber, which can be joined with a low-pressure source, and is joined by flexible connecting lines with the feed line and return line of the counterflow heat exchanger.08-15-2013

Patent applications in class Compressor-condenser-evaporator circuit

Patent applications in all subclasses Compressor-condenser-evaporator circuit