TOSHIBA CARRIER CORPORATION Patent applications |
Patent application number | Title | Published |
20150292506 | ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE - In one embodiment, a compression mechanism unit of a rotary compressor includes a cylinder includes a cylinder chamber, a roller in the chamber, first and second vanes which come into contact with the roller and partition the chamber into a compression side and an absorption side, and a bias member which biases the vanes. On both end sides of a posterior end portion of the first vane, first vane side attachment portions having an equal dimension in the axial direction are provided. On both end sides of the second vane along the axial direction of the axis, second vane side attachment portions having an equal dimension in the axial direction are provided. The vanes are attached to the bias member via the attachment portions. | 10-15-2015 |
20140250937 | HERMETIC-TYPE COMPRESSOR AND REFRIDGERATION CYCLE APPARATUS - A compression mechanism portion housed in a closed case is provided with a partition plate located between a first cylinder and a second cylinder. The compression mechanism includes a first bearing discharge port formed to a first bearing and a first partition plate discharge port formed to the partition plate as discharge ports for discharging working fluid compressed in a first cylinder chamber, and also includes, as discharge port for discharging working fluid compressed in a second cylinder chamber, a second bearing discharge port formed to a second bearing and a second partition plate discharge port formed to the partition plate. A cross-sectional area of the first partition plate discharge port is formed to be smaller than a cross-sectional area of the first bearing discharge port, and a cross-sectional area of the second partition plate discharge port is formed to be smaller than a cross-sectional area of the second bearing discharge port. | 09-11-2014 |
20140165642 | COMBINED CASCADE REFRIGERATION CYCLE APPARATUS - According to one embodiment, an apparatus includes a housing, two high-temperature-side refrigeration circuits and two low-temperature-side refrigeration circuits. Each of the high-temperature-side refrigeration circuits is configured to exchange heat with both of the two low-temperature-side refrigeration circuits by cascade heat exchangers. A hot-water pipe letting water or hot water through water-refrigerant heat exchangers of the high-temperature-side refrigeration circuits is provided. When the low-temperature-side refrigeration circuit conducts a defrosting operation of the evaporator, the low-temperature-side refrigeration circuits are controlled in such a way that the low-temperature-side refrigerant circuit releases heat in the cascade heat exchanger. | 06-19-2014 |
20140096561 | SEALED COMPRESSOR AND REFRIGERATION CYCLE DEVICE - According to one embodiment, a sealed compressor is configured to suction a working fluid to a rotary compression mechanism section through a suction pipe extending into an accumulator. The sealed compressor has a relation of Aac/Acy≦4, Vac/Vcy≧20, and As/Acy≧0.12 when an inner diameter cross-sectional area of the accumulator is denoted by Aac (mm | 04-10-2014 |
20140013790 | CASCADE REFRIGERATION CYCLE APPARATUS - According to one embodiment, a cascade refrigeration cycle apparatus according to the present embodiment includes a high-temperature-side and a low-temperature-side refrigeration circuits, an inverter and a control section. The high-temperature-side refrigeration circuit includes a first compressor and a cascade heat exchanger. The low-temperature-side refrigeration circuit includes a second compressor and the cascade heat exchanger. The inverter connected to at least one of the compressors. The control section controls the inverter so that a set operating frequency for the first compressor is higher than a set operating frequency for the second compressor when an operation of the apparatus is started. | 01-16-2014 |
20130333409 | HEAT SOURCE UNIT - According to one embodiment, a heat source unit apparatus includes air heat exchangers, each includes a plurality of fins arranged at prescribed intervals, heat exchanging pipes penetrating the fins, and bent strips extending at sides and bent in the same direction, and a heat exchange module includes two air heat exchangers, each having the bent strips opposed to those of the other air heat exchanger, the air heat exchangers being inclined such that lower edges are close to each other and upper edges are spaced apart, whereby the heat exchange module is shaped like a letter V as seen from side. | 12-19-2013 |
20130219952 | HERMETICALLY SEALED ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE - The height measured from the bottom surfaces of support legs is set to be 2.5 or more times as great as the outer diameter of the compressor body, the height of the center of gravity measured from the bottom surfaces of the support legs to the center of gravity is set to be ½ or less the overall height, and the support legs are provided in number of four, based on the fulfillment of Rc/cosθ08-29-2013 | |
20130219936 | HEAT SOURCE APPARATUS - A heat source apparatus of a heat source system made up of a heat source machine side and a load facility side includes a heat source machine, and a heat source controller, wherein the heat source machine includes: a water heat exchanger that exchanges heat between heat source water and a refrigerant circulating through a refrigeration cycle; a primary pump that delivers heat source water to the water heat exchanger; and a heat source machine control device that operates based on information from the water heat exchanger and the primary pump, and wherein the heat source controller is connected to the heat source machine control device on a heat source side and to the load facility side so as to determine, after the primary pump is activated, whether or not the heat source water is normally fed by the primary pump based on a temperature difference between the heat source water before and after the water heat exchanger or a pressure difference .between the heat source water before and after the water heat exchanger, and so as to then operate the refrigeration cycle after water feed is confirmed through water feed determination. | 08-29-2013 |
20120304685 | AIR CONDITIONER - An air conditioner includes oil balancing pipes that extract lubricating oil stored in an oil separator and each of compressors in which a specified amount of the lubricating oil or more is stored, a distributor that distributes the lubricating oil led from the oil separator and the compressors to a plurality of channels, and oil return pipes that communicatively connect the distribution channels of the distributor and a refrigerant inlet pipe of each of the compressors to return the lubricating oil to each of the compressors. | 12-06-2012 |
20120260691 | MULTI-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 |
20120218731 | HEAT SOURCE UNIT - According to one embodiment, a heat source unit apparatus includes an electric component box that is disposed in a housing, a power supply cable and a communication cable being inserted into the electric component box from an outside of the housing, a metallic electric cable cover member that is interposed between the electric component box and the housing, a power supply cable hole and a communication cable hole being made in one side surface of the housing, the power supply cable and the communication cable being covered with a cable cover member, and a partition plate that is provided in the cable cover member to partition the electric cable cover member into a region where the power supply cable is accommodated and a region where the communication cable is accommodated. | 08-30-2012 |
20120174620 | HERMETIC 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 |
20120174617 | REFRIGERANT 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 |
20120125033 | HEAT SOURCE UNIT - According to one embodiment, a heat source unit apparatus includes air heat exchangers, each includes a plurality of fins arranged at prescribed intervals, heat exchanging pipes penetrating the fins, and bent strips extending at sides and bent in the same direction, and a heat exchange module includes two air heat exchangers, each having the bent strips opposed to those of the other air heat exchanger, the air heat exchangers being inclined such that lower edges are close to each other and upper edges are spaced apart, whereby the heat exchange module is shaped like a letter V as seen from side. | 05-24-2012 |
20120055665 | SECONDARY PUMP TYPE HEAT SOURCE AND SECONDARY PUMP TYPE HEAT SOURCE CONTROL METHOD - A secondary pump-type heat source system includes: heat sources connected in parallel; a load system in which the heat source water flows; a primary pump supplying the heat source water to the load system; a secondary pump provided for each heat source and supplies the heat source water subjected to heat exchange in the load system to the heat source; and a heat source controller calculating flow quantity of the heat source water flowing in the heat source side and flow quantity of the heat source water flowing in the load system side by assigning a result from measurement by a water temperature sensor detecting heat source temperature to an operating characteristic of each heat source and controlling operation of the secondary pumps based on the calculation result. | 03-08-2012 |
20110067434 | HERMETIC 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 |
20110052439 | REFRIGERANT COMPRESSOR AND REFRIGERATING CYCLE DEVICE - A refrigerant compressor includes a first layer ( | 03-03-2011 |
20100201232 | CEILING-EMBEDDED AIR CONDITIONER - In a ceiling-embedded air conditioner, a panel fastening screw that fastens a decorative panel to an indoor unit body embedded in a ceiling is previously mounted to the indoor unit body and has an intermediate portion having a small diameter with no threaded portion. | 08-12-2010 |
20100193164 | OUTDOOR UNIT OF AIR CONDITIONER - The inside of an outdoor unit body is partitioned, by a partitioning wall, into a heat exchange chamber in which a heat exchanger and a blower are accommodated and a machine chamber in which a compressor and pipes are accommodated. An electronic component box is mounted between the outdoor unit body and the upper end of the partitioning wall. A control board is accommodated in the electronic component box in a horizontal posture so that a surface mounted with electronic components faces downward. An opening used for a lead wiring operation is opened in the bottom surface of the electronic component box. A wire cover is slidably attached to the bottom surface of the electronic component box to allow the opening for the lead wiring operation to freely open and close. According to this constitution, the electronic components can be prevented from falling to outside when electronic problems occur. | 08-05-2010 |
20100192611 | CEILING-EMBEDDED AIR CONDITIONER - An air passage has a blow-out side opening opposed to a position other than the longitudinal ends of a blow-out port of a decorative panel. The width of a louver, as determined in an air-blowing direction, decreases from a longitudinal center of the louver to the ends of the louver. | 08-05-2010 |
20100192610 | INDOOR UNIT OF AIR CONDITIONER - An indoor unit of an air conditioner includes a heat exchanger accommodated inside a indoor unit body which is a housing whose lower face is opened, a drain pan which is disposed below the heat exchanger and receives drain water generated at the heat exchanger, a drain pump which is detachably disposed within the indoor unit body, sucks drain water accumulated in the drain pan and discharges the drain water to the outside, a drain port which is disposed at a bottom face wall section of the drain pan, the port being an opening portion through which the drain pump is insertable, and a drain cap which openably closes the drain pump insertion port. | 08-05-2010 |
20100147020 | ROTARY 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 |
20100147013 | MULTI-CYLINDER ROTARY COMPRESSOR AND REFRIGERATION CYCLE EQUIPMENT - A rotary compressor, in which formulas RcL≧H−Cr−Cs is established, when the axial direction of the connecting part is L, the axial length of the first roller is H, the axial length of a bevel formed at the inside edge of the first roller is Cr, and the axial direction of a bevel of the second crankshaft is Cs. | 06-17-2010 |
20100107669 | THREE-WAY SOLENOID VALVE, ROTARY COMPRESSOR, AND REFRIGERATION CYCLE EQUIPMENT - A three-way solenoid valve includes a valve box in which a first valve seat and an outflow port are provided at one end and a second valve seat is provided at an apart position. A solenoid unit, provided with the valve body, is located at the other end of the valve box. A circular sealing projection divides the internal space of the valve box into a first chamber and a second chamber. A first inflow port is open in the first chamber, and a second inflow port is open in the second chamber. The first inflow port communicates with the outflow port when the valve body is in contact with the second valve seat. The second inflow port communicates with the outflow port through an internal flow path when the valve body is in contact with the first valve seat. | 05-06-2010 |
20100066197 | WINDING METHOD FOR STATOR AND PERMANENT MAGNET MOTOR - In a stator winding method for winding conductive wires | 03-18-2010 |
20090310394 | DIRECT-CURRENT POWER SUPPLY APPARATUS - First and second rectification circuits are connected to a commercial AC power supply by a reactor. A load is connected between the output terminal on the positive side of the first rectification circuit and the output terminal on the negative side of the second rectification circuit. While the voltage or the commercial AC power supply remains at the positive level, a current flows through a path constituted by one of the diodes of the first rectification circuit and one of the diodes of the second rectification circuit. While the voltage of the commercial AC power supply remains at the negative level, too, a current flows through the path constituted by one of the diodes of the first rectification circuit and one of the diodes of the second rectification circuit. | 12-17-2009 |
20080276635 | AIR CONDITIONING APPARATUS - A first motor-actuated expansion valve and a second motor-actuated expansion valve which are connected in parallel with each other in back-to-back connection are provided between an outdoor heat exchanger and an indoor heat exchanger. In the first motor-actuated expansion valve, at the time of non-operation and full closure, when the refrigerant pressure on the indoor heat exchanger side is higher than the refrigerant pressure on the outdoor heat exchanger side by a predetermined value or more, the full closure is released by receiving the refrigerant pressure on the indoor heat exchanger side. In the second motor-actuated expansion valve, at the time of non-operation and full closure, when the refrigerant pressure on the outdoor heat exchanger side is higher than the refrigerant pressure on the indoor heat exchanger side by a predetermined value or more, the full closure is released by receiving the refrigerant pressure on the outdoor heat exchanger side. | 11-13-2008 |
20080206082 | CLOSED COMPRESSOR AND REFRIGERATING CYCLE APPARATUS - A closed compressor includes a closed case in which a plurality of compression mechanism sections are accommodated, the compression mechanism section having a cylinder including a cylinder chamber eccentrically rotatably accommodating a roller, the compression mechanism section including a blade having a leading edge to divide the cylinder chamber into two parts along a direction in which the roller rotates, the compressor including a high-pressure refrigerant introducing mechanism guiding a high-pressure refrigerant into the cylinder chamber and separating the blade from the roller, the compressor being configured to switch between a high-capacity operation in which all the compression mechanism sections perform a compression operation and a low-capacity operation in which the blade in the compression mechanism section is separated from the roller and thus prevented from performing the compression operation, the high-pressure refrigerant introducing mechanism including a high-pressure refrigerant storage section storing the high-pressure refrigerant. | 08-28-2008 |