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| Number | Title | Issue Date |
| 7351043 | Horizontal compressor end cap A substantially horizontal compressor including a housing having a main body portion with an open end. An end cap is secured to the main body portion with the end cap being provided with a plurality of apertures. The hermetic terminal body of the compressor is seala... | 04/01/2008 |
| 7296435 | Refrigerating system having reciprocating compressor A refrigerating system includes: an evaporator (2) for performing a cooling operation as a refrigerant is evaporated; a compressor (4) for compressing the refrigerant discharged from the evaporator as a mover is reciprocally moved; a condenser (6 | 11/20/2007 |
| 7231783 | Oil control system for a refrigeration system A refrigeration system includes a compressor having a compressor housing and operable to compress a flow of refrigerant. A pump is operable to provide a flow of oil to the compressor. A portion of the oil mixes with the flow of refrigerant and the remainder of the o... | 06/19/2007 |
| 7210309 | Variable displacement compressor A variable displacement compressor for efficiently cooling and lubricating seals arranged on a rotary shaft. The seals are arranged at end portions of the rotary shaft that project from a housing of the compressor. A first lubrication chamber is defined by a first s... | 05/01/2007 |
| 7207185 | Vehicle air conditioning apparatus A vehicle air conditioning apparatus includes a refrigerant circulation circuit. The vehicle air conditioning apparatus has a variable displacement type compressor, a first pressure monitoring point, a second pressure monitoring point and an oil separator in the ref... | 04/24/2007 |
| 7204098 | Oil separation structure for refrigerant compressor The present invention relates to a structure for separating oil from a refrigerant gas containing the oil. The refrigerant gas is discharged from a refrigerant compressor which forms a part of refrigerating cycle to an external refrigerant circuit. The oil separatio... | 04/17/2007 |
| 7186099 | Inclined scroll machine having a special oil sump A scroll-type compressor is provided in an inclined or inverted position with an oil sump disposed adjacent to a gas inlet of the scroll wraps to allow droplets of oil to be entrained in the gas being compressed so that the oil droplets in the gas can cool the scrol... | 03/06/2007 |
| 7163383 | Compressor having alignment bushings and assembly method A compressor assembly including a compression mechanism having a main bearing and a plurality of first pilot holes, and an electric motor comprising a rotor disposed within a stator. The stator has a plurality of second and third pilot holes. Each of the first pilot... | 01/16/2007 |
| 7128528 | Bearings for COrefrigerant compressor use, compressor using the same, and applications of the same The object of the present invention is to provide: high-reliability and long-life CO2 refrigerant compressor-use bearings that uses bearing materials high in wear resistance and in baking resistance, and; such a compressor, air conditioner, refrigerator, ... | 10/31/2006 |
| 7101160 | Electric compressor A compressor housing defines a motor accommodating chamber. The pressure in the motor accommodating chamber is equal to the pressure in a suction chamber. A first reservoir chamber is located in a discharge chamber. A second reservoir chamber is defined about the di... | 09/05/2006 |
| 7082785 | Oil separator for vapor compression system compressor A transcritical vapor compression system includes a compressor assembly that includes an oil separator for separating oil from refrigerant. The oil separator is disposed between a motor and a compression chamber in a sub-critical portion of the vapor compression sys... | 08/01/2006 |
| 7080522 | Car air conditioner and car with its conditioner There is provided a car air conditioner with a high COP, low GWP and high reliability. A simple refrigerant R32 is filled in a refrigerant circuit 1 of the car air conditioner. This simple refrigerant R32 has a high COP and low GWP, but is easily polarized an... | 07/25/2006 |
| 7059839 | Horizontal compressor end cap with a terminal, a visually transparent member, and a heater well mounted on the end cap projection A substantially horizontal compressor including a housing having a main body portion with an open end. An end cap is secured to the main body portion with the end cap being provided with a plurality of apertures. The hermetic terminal body of the compressor is seala... | 06/13/2006 |
| 6966192 | Tandem compressors with discharge valve on connecting lines A refrigerant cycle is disclosed having a number of compressors operating in tandem and supplying a compressed refrigerant to a refrigerant system. Discharge lines communicate a compressed refrigerant to a central discharge line for receiving flow from all tandem co... | 11/22/2005 |
| 6948916 | Piping layout for multiple compressor system A multiple hermetic compressor assembly comprising a first compressor and an adjacent, second compressor interconnected by a hot gas pressure discharge manifold, a suction gas pressure equalization manifold, a suction manifold and an oil equalization manifold, the m... | 09/27/2005 |
| 6929455 | Horizontal two stage rotary compressor A hermetic two stage rotary compressor having a housing with a stationary shaft fixedly mounted in the housing. A motor having a rotor and a stator is mounted in the housing with the rotor being rotatably mounted on the shaft. A pair of compression mechanisms are ro... | 08/16/2005 |
| 6925820 | Low profile condensing unit A condensing unit which includes a base plate having first and second oppositely disposed major surfaces. The base plate may include flanges disposed along the outer periphery of the base plate. A compressor mechanism and a condensing coil are mounted to the first m... | 08/09/2005 |
| 6910349 | Suction connection for dual centrifugal compressor refrigeration systems A dual centrifugal compressor refrigeration system has one evaporator for both compressors. The evaporator provides the centrifugal compressors with refrigerant vapor through separate suction connections for each compressor. Each suction connection has a protrusion ... | 06/28/2005 |
| 6807821 | Compressor with internal accumulator for use in split compressor A rotary compressor having a housing with a motor and an internal accumulator located on the low pressure side and an oil sump located on the high pressure side. A sealing means positioned within the housing defines a first low pressure chamber and a second high pre... | 10/26/2004 |
| 6675607 | Swash plate type compressor An oil separator is provided on a bleeding channel inside the shaft 16. By integral rotation of the shaft 16 and a rotary valve, oil contained in a refrigerant gas is centrifuged via the oil separator. The separated oil is supplied to an interface between... | 01/13/2004 |
| 6672101 | Electrically driven compressors and methods for circulating lubrication oil through the same An oil storage area (45a) is defined on the bottom of a motor chamber (45) of a scroll compressor (1). An oil transfer route (4a) is defined in the portion of a center housing (4) that corresponds to the storage area (45a). Lubricating oil L is separated ... | 01/06/2004 |
| 6516627 | Flowing pool shell and tube evaporator An evaporator for a refrigeration chiller includes a tube bundle in which at least a portion of the tubes of the tube bundle are immersed in a pool which include both liquid refrigerant and is lubricant. Liquid refrigerant and lubricant are deposited into... | 02/11/2003 |
| 6446462 | Freezing apparatus It is desired to avoid lack of lubricant oil in any of a plurality of compressors disposed in parallel in a single refrigerant circuit. To achieve this result, a freezer unit is provided, wherein a first kind of oil return pipe leading to a refrigerant su... | 09/10/2002 |
| 6363741 | Refrigerant composition and refrigerating apparatus A refrigerant composition comprising difluoromethane (R-32), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), and n-pentane, preferably prepared by mixing n-pentane preliminarily in R-134a, and mixing into a refrigerant of R-32 and R-125, wi... | 04/02/2002 |
| 6237362 | Internal oil separator for compressors of refrigeration systems An internal oil separator for compressors of refrigeration systems is disclosed. This oil separator supplies an effective quantity of lubrication oil to the drive parts of a compressor, and protects the compressor from being unexpectedly damaged or locked... | 05/29/2001 |
| 6216474 | Part load performance of variable speed screw compressor Lubrication supply to the rotors of a variable speed screw compressor is optimized for full load and a supplemental supply path is provided which is opened during low speed operation.... | 04/17/2001 |
| 6205808 | Prevention of oil backflow from a screw compressor in a refrigeration chiller A screw compressor in a refrigeration chiller includes one or more baffles disposed in the compressor housing so as to intercept and redirect oil which may flow and/or be blown, under certain operating conditions, in an upstream direction against the stre... | 03/27/2001 |
| 6167719 | Compressor for refrigeration cycle In a compressor of a refrigeration cycle using an HC-based refrigerant and a lubricant having specific gravity greater than that of the HC-based refrigerant and having no or no or less mutual solubility with the HC-based refrigerant, an oil reservoir is f... | 01/02/2001 |
| 6134911 | Compressor for use in refrigerator A compressor (30) for use in a refrigerator, which has a rotary shaft (33) supported by bearings (39 to 42) to be lubricated by a liquid refrigerant and is adapted to permit the rotary shaft 33 to continue rotating for a while after a liquid refrigerant p... | 10/24/2000 |
| 6067804 | Thermosiphonic oil cooler for refrigeration chiller Oil cooling is accomplished in a refrigeration chiller by flowing hot oil into heat exchange contact with liquid refrigerant which is sourced from the chiller's condenser and returned thereto. The rejection of heat from the oil to the refrigerant in an oi... | 05/30/2000 |
| 6035963 | Refrigeration compressor having an asymmetrical housing for noise suppression An upper housing shell of a hermetically sealed refrigeration compressor has a central asymmetrical section interposed between a lower cylindrical section and an upper spherical section. The shape of the central section is such that opposite points define... | 03/14/2000 |
| 6018962 | Centrifugal compressor oil sump demister apparatus A refrigeration apparatus contains an oil sump having an interior portion. A housing is located, at least in part, within the oil sump interior. The housing has at least one inlet and at least one outlet. The inlet allows a vent gas stream to enter the ho... | 02/01/2000 |
| 6009722 | Motor cooling structure for turbo A motor cooling structure for a turbo compressor is disclosed. The structure includes a refrigerant suction tube communicating with one lateral wall of the sealed container and extended from the evaporator, a first refrigerant flow tube communicating with... | 01/04/2000 |
| 6010315 | Compressor for use in refrigerator A compressor for use in a refrigerator, which has a rotary shaft supported by bearings to be lubricated by a liquid refrigerant and is adapted to permit the rotary shaft to continue rotating for a while after a liquid refrigerant pump is stopped at, for e... | 01/04/2000 |
| 5996363 | Oil level equalizing system for plural compressors An air conditioning equipment is provided with an oil level equalizing system, which includes a plurality of low-pressure shell-type compressors communicating with a suction line through a plurality of branch portions, a plurality of connecting lines each... | 12/07/1999 |
| 5950451 | Reciprocating refrigerant compressor A closed reciprocating compressor for use in refrigeration cycle containing a refrigerant and a refrigerating machine oil, the refrigerant comprising a chlorine-free fluorocarbon and/or hydrofluorocarbon and having a critical temperature of 40° C. or hig... | 09/14/1999 |
| 5937661 | Compressor for use in refrigerator A compressor (30) for use in a refrigerator, which has a rotary shaft (33) supported by bearings (39 to 42) to be lubricated by a liquid refrigerant and is adapted to permit the rotary shaft 33 to continue rotating for a while after a liquid refrigerant p... | 08/17/1999 |
| 5939200 | Insulating film for use in motor of refrigeration compressor The present invention provides an insulating film for use in the motor of a refrigeration compressor using a substitute flon and a refrigerating machine oil in particular combination, which film is obtained by adding to a base film, or coating on the surf... | 08/17/1999 |
| 5901559 | Electromechanical regulator An oil level regulator is disclosed for use in a refrigeration system which has an oil reservoir and at least one compressor with a crankcase for containing oil. The regulator has a body with an interior fluid chamber for receiving oil. An inlet communica... | 05/11/1999 |
| 5881564 | Compressor for use in refrigerator A compressor (30) for use in a refrigerator, which has a rotary shaft (33) supported by bearings (39 to 42) to be lubricated by a liquid refrigerant and is adapted to permit the rotary shaft 33 to continue rotating for a while after a liquid refrigerant p... | 03/16/1999 |
