Class / Patent application number | Description | Number of patent applications / Date published |
417372000 | Interrelated or common lubricating or cooling means for pump and motor | 28 |
20080310974 | Hermetic Compressor With a Heat Dissipation System - A hermetic compressor with a heat dissipating system, comprising: a casing within which is defined an oil sump; a cylinder block mounted inside the casing and defining a cylinder, for compression of a refrigerant fluid, having an end closed by a cylinder head in which is defined a discharge chamber, and at least one thermal energy transfer duct having a heat absorbing end mounted to the cylinder block in order to absorb the heat generated by compression of the refrigerant fluid inside the cylinder, and a heat releasing end provided away from the cylinder block in order to conduct and liberate the heat absorbed therefrom to another means. | 12-18-2008 |
20090035160 | HERMETIC COMPRESSOR AND REFRIGERATION CYCLE DEVICE HAVING THE SAME - A hermetic compressor and a refrigeration cycle device having the same are provided. An oil separator is installed either outside or inside of a casing to separate oil from a discharged refrigerant and an oil pump driven by a driving force of a motor is used to recollect the oil separated in the oil separator, whereby the separation between oil and refrigerant can effectively be performed and also a fabricating cost can be reduced. Also, an introduction of the separated refrigerant back into the compressor can be prevented so as to improve a cooling capability of the refrigeration cycle device. In addition, the oil pump is driven by the driving force of the motor, resulting in a simple configuration of the compressor and a reduction of a fabricating cost of the compressor. | 02-05-2009 |
20090148316 | Pump Device - The invention relates to a pump device for feeding a delivery medium out of a deep borehole which leads from a floor level into the interior of the earth, which deep borehole is provided at least in sections with borehole piping, having a pump and having a motor which drives the pump. As a result of the motor being arranged outside the borehole piping and as a result of it being possible for the motor to be connected to the pump by means of torque transmitting means which extend laterally through the borehole piping, the motor can be protected from overheating, and in the event of a fault, can be pulled out of the deep borehole independently of the pump. | 06-11-2009 |
20090246044 | FLUID PRESSURE PUMP UNIT - The present invention provides a technology for downsizing fluid pressure equipment including a fluid pressure pump and a radiator. The hydraulic pump unit | 10-01-2009 |
20100092316 | REFRIGERANT COMPRESSOR - The invention concerns a refrigerant compressor ( | 04-15-2010 |
20100111725 | FLUID FLOW MACHINE - A fluid flow machine includes a housing with a connecting piece for a working fluid on an intake side, and a pressure side. At least one impeller is mounted on a shaft, which is held in the housing by radial and axial bearings, and a cooling arrangement is provided for at least one bearing. A revolving part of the axial bearing is designed as a cooling fluid transportation device, wherein a suction connection leads to the intake side of the impeller. | 05-06-2010 |
20100284833 | SEALED TYPE COMPRSSOR - A sealed type compressor includes a sealed vessel, compression and drive elements disposed in the sealed vessel, an oil pump and an oil supply groove. Upper and lower bearings sandwich the cylinder and piston of the compression element from respective axial sides. The drive element drives the compression element via a crank shaft. The lower bearing has an axially extending bearing portion to support the crankshaft. The oil pump draws up a lubricant into an oil channel extending in a shaft center direction of the crankshaft to provide lubrication to the compression and drive elements. The oil supply groove is provided at a sliding face of the bearing portion, and extends along the crankshaft to supply the lubricant to an outer surface of the crankshaft. The oil supply groove has a first open end side and a second closed end side at a lower end side of the crankshaft. | 11-11-2010 |
20110164997 | PUMP - A circulating pump with an impeller disposed in a pump housing, by which a fluid can be delivered from a pump inlet of the pump housing to a pump outlet of the pump housing. The circulating pump includes an electric motor, the rotor of which is mechanically coupled to the impeller via a shaft such that that the impeller can be placed into an appropriate rotating movement by rotation of the rotor, and cools the rotor of the electric motor by a thermosiphon in the shaft, wherein the impeller serves as a heat sink for a working medium of the thermosiphon. | 07-07-2011 |
20110229351 | JOURNAL BEARING WITH DUAL PASS COOLING FOR AIR MACHINE - A compressor rotor compresses air and delivers the compressed air to a downstream inlet and across a turbine rotor. A shaft rotates with the turbine rotor and the compressor rotor. The shaft is hollow with an inner bore and an outer periphery. At least one journal bearing supports a portion of the shaft, and has an inner bore spaced from the outer periphery of the shaft. A cooling air path is provided between the shaft outer periphery and the bearing inner periphery, and along a length of the bearing to at least one connection hole. The connection hole provides cooling air from an outer periphery of the shaft to the inner bore of the shaft. In a separate feature, a shaft for use in an air supply machine includes a hollow interior, with such a connection hole. | 09-22-2011 |
20120034112 | MOTOR PUMP UNIT - A motor pump unit for a high-pressure cleaning apparatus has an electric motor and a pump. The electric motor has a motor housing that is surrounded by a cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween. The pump has a suction inlet connected to the annular space outlet and a pressure outlet. The liquid to be transported by the pump can be supplied to the annular space inlet. The cooling housing, on its inside, comprises at least one flow guide rib for guiding the liquid within the annular space. In order to ensure that no liquid can leak out of the annular space even in the long term, the at least one flow guide rib is spaced-apart from the motor housing. | 02-09-2012 |
20120189472 | POWER UNIT - A hydraulic power unit for subsea use is disclosed. The power unit includes a housing containing a fluid, an electric motor mounted in the housing, a distribution pump, a heat exchange unit provided externally to the housing and at least one distribution conduit in fluid communication with the heat exchange unit and the housing. | 07-26-2012 |
20120201699 | COMPRESSOR - Disclosed is a compressor capable of having an enhanced performance by sufficiently supplying oil to components where sliding occurs not only in a high speed driving mode but also in a low speed driving mode. The compressor may increase an oil supply amount in a low speed driving mode, but may restrict an oil supply amount when a rotation speed of a driving motor reaches a predetermined speed in a constant or high speed driving mode, by setting the number of turns of an external groove to be approximately 1.75, and by forming an oil feeder in a conical shape. | 08-09-2012 |
20120263609 | COMPRESSOR INCLUDING MOTOR COOLING - A compressor may include a shell, a compression mechanism supported within the shell, a drive shaft engaged with the compression mechanism and a motor. The drive shaft may define first and second passages extending axially within the drive shaft and a third passage extending radially through an outer circumferential surface of the drive shaft and in communication with the second passage. The drive shaft may define an axially extending wall separating the first and second passages. The motor may include a rotor fixed to the drive shaft and a stator supported within the shell. The third passage may be adapted to provide oil to the stator during compressor operation to cool the stator. | 10-18-2012 |
20120308410 | Fluid Machine - [Purpose] To provide a fluid machine improved in lubrication performance and reliability. | 12-06-2012 |
20130189132 | COMPRESSOR AND VACUUM MACHINE - A compressor includes: a cylinder; a piston arranged within the cylinder; an outer rotor type motor causing the piston to reciprocate within the cylinder; and a fan fixed to a rotor of an outer rotor type motor and facing at least a part of the cylinder. | 07-25-2013 |
20130224048 | WET ROTOR PUMP MOTOR STATOR SEALING LINER - A sealing liner for use in a pump motor incorporates a radially enlarged portion at one end, and a radially smaller portion extending from the one end to an opposed end. A length of the overall sealing liner including the radially smaller portion and the radially enlarged portion is defined as a first length. A length of said radially enlarged portion is defined as a second length. A ratio of the first length to the second length is between about 6.5 and about 8.5. A stator assembly, a pump and a method are also disclosed. | 08-29-2013 |
20130251555 | POWER SYSTEM ARRANGEMENT - A power system arrangement is disclosed. The power system arrangement may include a power source, a power load, a power-transfer unit configured to transmit energy from the power source to the power load, a lubrication system configured to deliver lubrication fluid to the power system, wherein the lubrication system may include a first tank for storing lubrication fluid, and a support structure configured to support the power source, the power load, and the first tank. The power source, the power load, and the first tank may be coupled to the support structure substantially in series along a longitudinal axis. | 09-26-2013 |
20130251556 | POWER SYSTEM ARRANGEMENT - A power system arrangement is disclosed. The power system arrangement may include a power source configured to delivery energy, a power load configured to receive energy from the power source, a lubrication system configured to deliver lubrication fluid through the power system, wherein the lubrication system may include a tank for storing lubrication fluid, and a support structure configured to support the power source, the power load, and the tank. The power source, the power load, and the tank may be coupled to the support structure substantially in series along a longitudinal axis. | 09-26-2013 |
20140044572 | SCROLL COMPRESSION DEVICE - A scroll compression mechanism | 02-13-2014 |
20140105765 | SUBSEA COMPRESSOR DIRECTLY DRIVEN BY A PERMANENT MAGNET MOTOR WITH STATOR AND ROTOR SUBMERGED IN LIQUID - The present invention regards a compressor system comprising a compressor unit ( | 04-17-2014 |
20140140868 | SCROLL COMPRESSOR WITH OIL-COOLED MOTOR - A compressor may include a shell, a compression mechanism, a motor, a pumping mechanism, and a heat exchanger. The shell may define an internal cavity and an oil sump. The compression mechanism is disposed the said shell. The motor is coupled to a driveshaft for selectively powering the compression mechanism. The pumping mechanism may be in fluid-pumping communication with the oil sump. The first heat exchanger may be disposed external from the shell and in fluid communication with the pumping mechanism. The first heat exchanger may cool the oil prior to returning the cooled oil to the internal cavity. | 05-22-2014 |
20140248166 | PUMP - A vacuum pump has at least one side passage pump stage which comprises a side passage bounded by at least one stator element and having a coolant circuit for cooling the vacuum pump with a coolant, wherein the coolant circuit has at least one coolant passage for the side passage pump stage which is bounded at least regionally by the stator element. | 09-04-2014 |
20140294623 | Thermal/Noise Management in a Scroll Pump - The main sources of heat in a scroll pump are cooled efficiently by a single cooling fan so that noise and, in particular, fan-generated noise, can be kept low. The scroll pump includes a pump head assembly, a pump motor, a cooling fan that produces a cooling air flow in the pump, a cowling in which the pump head assembly, pump motor and cooling fan are housed and juxtaposed with one another in an axial direction of the pump, and a shroud disposed within the cowling and extending around the pump motor to define a tunnel with the motor and through which the air flow of the cooling fan is directed. | 10-02-2014 |
20140363319 | ROTARY VANE VACUUM PUMP - A rotary vane vacuum pump includes a pump casing having a gas inlet port and a gas outlet port, a stator provided within the pump casing and defining a cylindrical stator chamber and a cylindrical rotor eccentrically arranged in the stator chamber and equipped with radially movable radial vanes, the vanes cooperating with the inner wall of the stator chamber for pumping a gas from the gas inlet port to the gas outlet port, the pump casing being filled with such an amount of oil that the stator is immersed in an oil bath acting as cooling and lubricating fluid, wherein a motor for driving the pump is further provided, the motor being arranged in a motor casing that is in fluid communication with the pump casing, whereby the motor is immersed in the oil bath. | 12-11-2014 |
20150023818 | AIR COMPRESSION SYSTEM AND COOLING STRUCTURE THEREOF - An air compression system includes an air compression device and a cooling structure. The air compression device includes a liquid-cooled motor and a compressor. The cooling includes a radiator, a cooler, a first liquid conveying tube, a second liquid conveying tube, a third liquid conveying tube, a fourth liquid conveying tube and a cooling liquid. The radiator interconnects the compressor for cooling a lubricating liquid in the compressor; the first liquid conveying tube interconnects the radiator and the cooler; the second liquid conveying tube interconnects the radiator and the cooler; the third liquid conveying tube interconnects the liquid-cooled motor and the cooler; the fourth liquid conveying tube interconnects the liquid-cooled motor and the cooler; and the cooling liquid is filled into the cooler, so as to reduce the space occupied by the cooling structure. | 01-22-2015 |
20150064030 | FLUID PRESSURE DRIVE UNIT - A fluid pressure drive unit is to supply a working fluid to and drive a fluid pressure actuator. The fluid pressure drive unit includes a fluid pressure pump for suctioning and discharging the working fluid, an electric motor for driving and rotating the fluid pressure pump, a power transmission mechanism for transmitting a power between a rotation shaft of the fluid pressure pump and a rotation shaft of the electric motor, and a circulation mechanism to be driven by the power transmitted by the power transmission mechanism, the circulation mechanism for guiding a lubricating fluid in the power transmission mechanism and cooling the electric motor. | 03-05-2015 |
20150147203 | COMPRESSOR - A compressor may include a hermetic case to store oil in a lower portion thereof, a compression mechanism part to compress a refrigerant, a power train part to generate a driving force, a rotational shaft to transmit the driving force generated from the power train part to the compression mechanism part and including a hollow portion and a female screw part formed at the hollow portion, and an oil pumping member inserted into the hollow portion of the rotational shaft and including an oil pumping part which moves the oil stored in the lower portion of the hermetic case up and a male screw part which is coupled to the female screw part of the rotational shaft. Since the oil pumping member and the rotational shaft are firmly coupled to each other, the reliability of the oil supplying is improved. | 05-28-2015 |
20160201661 | SEALED COMPRESSOR AND FREEZER DEVICE OR REFRIGERATOR EQUIPPED WITH SAME | 07-14-2016 |