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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...
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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...
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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...
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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...
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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...
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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...
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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...
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6672101 |
Electrically driven compressors and methods for circulating lubrication oil through the same
An oil storage area ( 45 a ) is defined on the bottom of a motor chamber ( 45 ) of a scroll compressor ( 1 ). An oil transfer route ( 4 a ) is defined in the portion of a center housing ( 4 ) that...
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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...
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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...
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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...
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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...
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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.
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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5806336 |
Refrigeration apparatus and lubricating oil composition
There are provided a highly durable and efficient refrigerating apparatus and a lubricating oil composition that uses an HFC type refrigerant and is still free from the problem of thermal...
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5699678 |
Charging device
An improved charging device (20) comprising a vessel (22) for holding a liquid (24) therein. A component (26) on the vessel (22) is for allowing the liquid (24) to exit therefrom. A facility (28)...
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5651257 |
Working fluid composition and method for lubricating ammonia refrigerating machine
The present invention provides a working fluid composition for a refrigerating machine obtained by mixing an ammonia refrigerant with a lubricating oil which is extremely excellent in solubility...
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5603222 |
Cooling method and system for a compressor of a refrigerating system
The present invention relates to a method and a system for cooling a piston-driven compressor to permit the compressor to operate with a refrigerant gas, such as freon 22, that would normally cause...
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5548973 |
Sealed type compressor and refrigerating cycle
A sealed-type compressor used with HFC refrigerant. The sealed-type compressor houses a motor and compression machinery in a sealed case. The compression machinery includes at least a pair of...
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5542266 |
Refrigeration system with compressor using refrigeration oil insoluble in refrigerant
A refrigerating system is provided which includes a refrigerating line through which refrigerant flows, a refrigerant compressor for circulating the refrigerant through the refrigerating line, and...
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5461883 |
Compression refrigerating machine
A compression refrigerating machine for enabling an alternative refrigerant to be used by removing water content or chlorine which may be mixed into a lubricating oil. The compression refrigerating...
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5435144 |
Compressor lubricant distributing system for motor vehicles having auxiliary air conditioning
A compressor lubricant distributing system includes a suction outlet to an auxiliary compressor housing and a lubricant and refrigerant return conduit. The return conduit extends from the suction...
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5350039 |
Low capacity centrifugal refrigeration compressor
An improved motor driven centrifugal refrigerant compressor is disclosed having a housing enclosing a motor, control electronics and moving parts of the compressor, and a fluid pathway for...
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5345785 |
Scroll compressor and air conditioner using the same
A horizontal-installation-type scroll compressor requiring small installation space adopts a technique which can reduce the amount of refrigerating machine oil circulating through the refrigeration...
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5295359 |
Combination fluid level indicator and discharge device
A combination fluid level indicator and fluid discharge device is provided for preventing inaccurate fluid level indications and facilitating fluid discharge from a compressor or other container....
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5088292 |
Bearing pump control for lubricating hydrodynamic compressor bearings
A refrigeration system (10) having a compressor rotor (20) rotatably supported by a plurality of hydrodynamic bearings (22 and 24) lubricated by oiless pressurized liquid refrigerant supplied to a...
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4811567 |
Method for testing the operability of a refrigerant system
A refrigerant system for a household refrigerator has its operability tested after assembly of the refrigerant system with a refrigerator cabinet. A rotary compressor of the refrigerant system is...
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4730988 |
Oil foam enhancing and turbulence reducing apparatus in a compressor
A cup-like device, called a deturbulator, having a solid base portion and vertically oriented finger-like elements extending therefrom is disposed in the oil sump of a refrigeration compressor so...
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4676075 |
Scroll-type compressor for helium gas
A scroll-type compressor for compressing helium gas includes stationary and orbiting scroll members each having an end plate and a spiral wrap, with the scroll members being assembled together to...
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4671081 |
Device for collecting lubricating oil in a turbo-refrigerator
A device for collecting lubricating oil in the turbo-refrigerator comprising an evaporator, a condenser, a compressor, a suction vane arranged in front of the compressor to control the amount of...
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4621993 |
Scroll-type positive fluid displacement apparatus with oil compartment plate
A scroll-type pumping apparatus comprising a stationary scroll 1, an orbiting scroll 2 and a drive shaft 6 driving the orbiting scroll. A bottom end portion of the drive shaft is dipped in oil in a...
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4589826 |
Method of lubricating bearings of a machine handling liquefiable gas
In a refrigerating machine, a reservoir heated by an electric motor driving a compressor contains oil up to certain level. The reservoir is fed with refrigerating liquid complemented with oil. The...
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4569645 |
Rotary compressor with heat exchanger
A rotary compressor comprises a compression chamber defined by enclosing both ends of a cylinder with a main bearing and an end bearing; compression elements including a piston which is...
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4553399 |
Method of lubricating bearings of a refrigeration or the like compressor
Refrigerant liquid containing a little oil dissolved is vaporized while cooling the motor and a portion of the vaporization products is sent into the bearings to be lubricated. The large excess of...
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4516916 |
Oil cooled, hermetic refrigerant compressor
A hermetic refrigerant compressor having an electric motor and compressor assembly in a hermetic shell is cooled by oil which is first cooled in an external cooler 18 and is then delivered through...
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4485639 |
Cooling device for a refrigerator compressor
A compressor included in a refrigerative cycle is disposed in a refrigerator with a rear plate and side plates. The cooling device for the compressor includes a thermo-siphon which includes a...
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4399669 |
Motor compressor unit
A suspension system for a motor compressor unit mounted within a hermetically sealed shell. The shell defines at least one chamber filled with refrigerant suction gas and a second chamber filled...
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4399663 |
Mechanical control system for preventing compressor lubrication pump cavitation in a refrigeration system
A control system for operating a vapor compression refrigeration system to prevent oil pump cavitation during startup of the refrigeration system is disclosed. The control system includes a...
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4377938 |
Device for cooling the compressor of a thermal machine
The invention provides a device for cooling refrigerator or heat pump compressors and more particularly a means for priming the device of the thermo-siphon type which consists in providing a...
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4355960 |
Compressor refrigeration system utilizing thermally stable refrigeration lubricants containing alkyl polyhalophenyl ethers
A compressor refrigeration system employing a halocarbon refrigerant, has a lubricant composition in contact with the halocarbon refrigerant over the expected temperature range of the system, the...
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