US3334808A - Compressor lubrication arrangement - Google Patents
Compressor lubrication arrangement Download PDFInfo
- Publication number
- US3334808A US3334808A US504327A US50432765A US3334808A US 3334808 A US3334808 A US 3334808A US 504327 A US504327 A US 504327A US 50432765 A US50432765 A US 50432765A US 3334808 A US3334808 A US 3334808A
- Authority
- US
- United States
- Prior art keywords
- crankcase
- crankshaft
- lubricant
- compressor
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
- F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/02—Compressor arrangements of motor-compressor units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/902—Hermetically sealed motor pump unit
Definitions
- This invention relates to a hermetic refrigerant compressor and, more particularly, to an improved compressor of the type having a vertical crankshaft and including means on the crankshaft for reducing the oil level in the crankcase during operation below the operating mechanism to reduce the energy losses and thereby reduce the watts input to the compressor motor.
- crankshaft is journaledin a crankcase resiliently supported in a sealed outer casing, with the drive motor for the crankshaft being located above the compression mechanism in the crankcase.
- the hermetic compressor includes a welded shell or outer casing, the lower portion of which defines an oil sump.'When the compressor is inoperative, the crankcase is partially submerged in the sump and some oil is within the crankcase above the level of the operating mechanism therein. A relatively large supply of oil is desirable to reduce the adverse effects caused by miscibility of refrigerant and oil. However, it is desirable to remove oil from the crankcase in use or to reduce the oil level below the pistons and flywheel portion on the drive shaft to minimize operational losses due to frictional drag of the drive shaft and parts of the compression mechanism in the oil and to decrease the watts input to the electric drive motor.
- compressors of this type are built in larger sizes and cylinder unloading means are utilized, there would be insuflicient bypass of discharge gases about the pistons during unloading conditions to pressurize the crankcase.
- An object of the present invention is to provide a hermetic refrigerant compressor having fan means on the crankshaft Within the outer casing for pressurizing the crankcase independent of piston bypass for positively reducing the level of lubricant in the crankcase during operation.
- Another object of the present invention is to provide va hermetic refrigerant compressor having compression mechanism within which is defined a crankcase at least partially filled with lubricant when the compression mechanism is inoperative, with pump means in the crankshaft and with fan means on the crankshaft for pressurizing the crankcase to displace the lubricant from the crankcase during operation into the sump in the outer casing so as to reduce the level of oil in the crankcase below the operating components therein, said fan means communicating with the pump means for receiving lubricant from the pump means and returning it to the crankcase in a path isolated from the suction case.
- FIG. 1 is a cross-sectional view of a hermetic refrigerant compressor embodying the present invention
- FIG. 2 is a plan view of the fan on the crankshaft for pressurizing the crankcase in the compression mechanism
- FIG. 3 is a perspective view of the fan and illustrating a portion of the annular sealing ring which cooperates with the lower fan housing portion of the fan to minimize recirculation of gas.
- the compressor comprises a gas-tight housing including an upper shell 12 and a lower shell 13 integrally joined to one another, as for example, by welding.
- a plurality of legs 14 may be welded to the lower shell of the compressor for supporting the compressor in an upright position.
- a compression mechanism that includes a compressor block 15 surrounded and partially enclosed by an annular sleeve 20.
- the compressor block 15 comprises a motor flange portion 16 and a cylinder crankcase flange portion 17 divided by a partition 18.
- annular sleeve 20 Surrounding the lower portion 17 of the crankcase in spaced relationship to the lower shell -13 .of the outer casing is the annular sleeve 20. Formed integrally on the top of the annular sleeve 20 is an out-turned, ring-like flange 21. An annular member 22 having a transversely disposed lower ring-like flange 23 is aflixed to the lower shell 13. A plurality of resilient spring means 24 are provided between the flange members 2.1 and 23 for resiliently supporting the crankcase within the outer housing.
- crankcase 15 Provided within the crankcase 15 are a plurality of cylinders 26. Though a four-cylinder compressor is illustrated, it will be understood by those versed in the art that any desired number of cylinders may be employed.
- Cylinder sleeves or liners 27 are provided in each of the cylinders 26 and a suitable piston 28 is adapted to recipro-. cate within each of the cylinder liners 27.
- Each piston 28 is operatively connected to the eccentric portion 29 of the vertically disposed crankshaft 30, which is journaled in spaced bearings within the crankcase 15.
- the means for operatively connecting the piston 28 to the crankshaft 30 include a connecting rod 32, which is affixed at one end of the eccentric portion 29 of crankshaft or drive shaft 30 and at the other end to a wrist pin 34 carried in piston 28.
- valve assembly 36 Closing the end of each cylinder cavity is a valve assembly 36.
- valve assembly may comprise a discharge valve unit 37, a suction valve plate 38 and a suction valve or reed member 39. Each valve assembly is operative in a conventional manner.
- valve assemblies 36 are each held in place in the end of a cylinder by means including a cap 40 retained in position by a spring 42, for example, a Belleville spring, and a retaining ring 44.
- a spring 42 for example, a Belleville spring
- annular circular sealing flanges 48 and 50 are provided with recesses within which are disposed O-rings 52 and 54 for sealing between the annular sleeve 20 and the respective flanges 48 and 50.
- a space 56 into which discharge gases are passed from the cylinders 26 after compression.
- the discharge gases pass from the annular chamber 56 through a conduit (not shown) from the compressor to the condenser of the refrigerating system in a known manner.
- the annular space 56 is provided with a plurality of cavities to impart a muffiing effect to the discharge gases which are dis-charged from the cylinders into the space 56 prior to discharge from the compressor.
- Suction gas enters the casing of the compressor via a suction line in a conventional manner and passes over the electric motor 68, thereby cooling the motor.
- the suction gas passes through the motor compartment into the suction and discharge valve assemblies 36 via passage means comprising an opening 69 in the partition 18 and an opening 70 in the discharge assembly 37.
- the motor 68 comprises a stator 72 which is mounted within the motor flange portion 16 of the compressor block or crankcase 15.
- the stator 72 is inductively connected to the rotor 74 which is afiixed onto the upper portion 76 of the crankshaft 30.
- the rotor may be suitably connected to the portion 76 of the drive shaft 30, as for example, by a key.
- the shaft 30 may be journaled within a lower bearing 80 which is mounted in the lower bearing head 81.
- the lower bearing head 81 is maintained in position by a suitable wedge lock spring or retaining spring 82 seated within an annular groove in the compressor block 15.
- a thrust bearing 83 which has a central opening 84 defined therethrough.
- Located in the lower portion 85 of the crankshaft 30 adjacent the counterweight portion 86 is a coaxially dis posed hole 87 which constitutes the eye of the impeller or pump means which are defined within the crankshaft 30.
- the pump means may comprise a vertically disposed passageway 90 in the crankshaft 30 which is offset from the axis of rota: tion of crankshaft 30 and is communicated with the eye 87 of the impeller by means of a transversely disposed passage 91 for feeding lubricant to the upper bearing means. Passage 91 may be opened at its ends to lubricate bearing 80.
- cally disposed passage are provided in the crankshaft for supplying lubricant to a plurality of ports 92, 93, 94 and 95 on the surface of the eccentric portion 29 of the crankshaft 30 for lubricating the connecting rod bearing surfaces.
- the second passage may be vented to the interior of the crankcase to function as a low pressure pump and the third pump is not vented, thereby functioning as a high
- a heat shield 31 may be provided about the annular sleeve 20 for minimizing heat transfer from the relatively hot discharge gases in the discharge gas muffiing chamber 56 to the relatively cold suction gas in the space between the compression means and the outer casing.
- the upper bearing means comprise a first bearing and a second bearing 102 which are spaced from one another to define an annular space 103 therebetween and about the crankshaft.
- the means for pressurizing the crankcase to positively displace lubricant therefrom during operation comprises a fan mechanism 105 operatively connected to the crankshaft 30 and rotatable therewith.
- the fan includes a cupshaped portion 106 enclosing an intermediate portion of crankshaft 30 and being afl'lXed thereto as for example, by collar 107 that is welded or otherwise aflixed to portion 106 of the fan and is rigidly joined to crankshaft 30, for example, by a press-fit, and an annular centrifugal fan housing 108 which is doughnut shaped and divided internally by a plurality of blades 110 to define a plurality of compartments 111a and 1111) within nular ring 112 is affixed to the compressor block 15 for minimizing recirculation of suction gas.
- Each of the compartments 111:: within the housing 108 are provided with openings 114 in the top wall thereof for communicating with the suction gas passing over the motor 68.
- suction gas enters the compartments 111a through the inlet openings 114 and is discharged into the crankcase through the openings 116 in the bottom of each compartment.
- the fan functions as a pump means to force the suction gas into the crankcase in order to raise the pressure therein and positively force lubricant within the crankcase through the openings 88 and 88' back into the sump defined in the lower shell of the compressor.
- cup-shaped portion 106 of the fan mechanism 105 encloses the intermediate part of the crankshaft 30 and is spaced therefrom so as to define an annular space or passage 115.
- Refrigerant vapor and lubricant may be vented from pump passage 90 through passage. 104 and passage at start up to permit lubricant to reach all the upper bearing surfaces.
- lubricant pumped upwardly to the upper bearing means by the pump 90 will be returned to the crankcase through the annular passage 115, fan means 105, and passage in partition 18. Lubricant passes through the passage 115 and enters the pump compartments 111b via radial 118 defined in the walls of the housing 108.
- Such lubricant will be discharged from the compartments 111b through the openings 116 in the bottom thereof and then returned to the crankcase via the passage 120 in partition or wall 18.
- the lubricant returned from the upper hearing means to the crankcase is in a path separate from the suction gas, which passes over the electric motor 68 to the suction side of the piston mechanism through opening 69.
- This construction prevents undesirable entertainment of lubricant in the suction gas.
- the present compressor design may utilize a large supply of oil or lubricant to minimize the adverse effects of miscibility of the oil and refrigerant normally used in hermetic refrigerant compressors.
- the level of lubricant n the crankcase may be reduced below the level of the compression mechanism and the flywheel portion of the drive shaft. There is less frictional drag on the crankshaft during operation and the watts input to the electric drive motor may be reduced.
- the means for pressurizing the crankcase are independent of piston design and of load conditions. Such means are also independent of whether or not the compressor is provided with cylinder unloaders.
- a fan mechanism is provided on the crankcase for positively pressurizing the crankcase during operation by use of suction gas and for returning lubricant from the upper bearing means to the crankcase in a path isolated from the suction gases passing over the compressor electric drive motor to the compression mechamsm.
- a reciprocating compressor comprising an outer casing, compression means including a compressor block defining a crankcase therein and an annular sleeve about said block, a vertically extending crankshaft journaled in said block, said block defining cylinder means, a piston reciprocatingly disposed in each cylinder means, means operatively connecting each said piston to said crankshaft, an electric drive motor carried by the block and being operatively connected to said crankshaft, said block and annular sleeve being partially submerged in lubricant in the sump formed in the lower portion of the outer casing, and pump means in the crankshaft for lubricating the crankshaft bearing surfaces and the connecting means bearing surfaces, lubricant being disposed in the crankcase when the compressor is idle, the improvement comprising fan means on said crankshaft for pressurizing the crankcase during operation to return lubricant from the crankcase to the sump so as to reduce the level of lubricant in the crankcase below the connecting means and each said piston to increase the operating ef
- a refrigerant compressor comprising a sealed outer housing, compression mechanism in said housing and spaced from said outer housing to define an annular space therebetween, the lower part of the outer housing defining a sump for lubricant, said compression mechanism including a cylinder block defining a crackcase, the lower portions of said block being partially submerged in said lubricant in said sump, resilient means supporting said cylinder block in said housing, at least one cylinder in said block, a piston reciprocatingly disposed in said cylinder, a vertically extending crankshaft journaled in upper and lower bearing means in said block, said crankshaft having a flywheel portion thereon disposed in said crankcase, electric motor means supported on said block and affixed to the upper end of said crankshaft for driving same, means operatively connecting said crankshaft to said piston, and pump means in said crankshaft for lubrieating said upper and lower bearing means, lubricant being disposed in said crankcase when the compressor is idle above the flywheel portion of the crankshaft, the improvement
- a refrigerant compressor as in claim 3 wherein said fan means includes a cup-shaped portion cooperating with said crankshaft to provide passage therebetween and a fan housing portion, said pump means being vented to said passage, whereby, in operation lubricant pumped by said pump means may pass into said passage and into said fan housing portion and be returned to said crankcase in a path isolated from said suction gas.
- a refrigerant compressor comprising an outer casing, compression means defining a crankcase therein, a vertically extending crankshaft journalled in said compression means, said crankshaft having a counterweight portion adjacent the lower end thereof, cylinder means in said compression means, a piston reciprocatingly disposed in each cylinder means, means operatively connecting each said piston to said crankshaft, said compression means being partially immersed in lubricant in the sump formed in the lower portion of the outer casing, and pump means in the crankshaft for lubricating the crankshaft bearing surfaces and the connecting means zbearing surfaces, the improvement comprising means rotatable with the crankshaft for positively pressurizing the crankcase during operation independent of piston bypass to reduce the level of lubricant in the crankcase below the connecting means, each said piston, and the counterweight portion of the crankshaft to increase the operating efficiency of the compressor and reduce the electrical input to the electric drive motor.
- crankshaft includes a counterweight portion adjacent the lower end thereof, said pressurizing means reducing thelevel of lubricant in the crankcase below the counterweight portion of the crankshaft.
- a refrigerant compressor comprising an outer casing, compression means defining a crankcase therein, a vertically extending crankshaft journalled in said compression means, said crankshaft having a counterweight portion adjacent the lower end thereof, cylinder means in said compression means, a piston reciprocatingly disposed in each cylinder means, means operatively connecting each said piston to said crankshaft, said compressi-on means being partially immersed in lubricant in the sump formed in the lower portion of the outer casing, and pump means in the crankshaft for lubricating the crankshaft bearing surfaces and the connecting means bearing surfaces, there being lubricant in the crankcase when the compressor is idle, the improvement comprising means rotatable with the crankshaft for displacing lubricant from the crankcase and returning same to the sump during operation to reduce the level of lubricant in the crankcase below the counterweight portion of the crankshaft.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US504327A US3334808A (en) | 1965-10-24 | 1965-10-24 | Compressor lubrication arrangement |
DE19661503446 DE1503446A1 (de) | 1965-10-24 | 1966-05-20 | Kolbenkompressor,insbesondere hermetisch gekapselter Kollbenkompressor fuer Kuehlanlagen |
NL6608312A NL6608312A (ja) | 1965-10-24 | 1966-06-15 | |
DK324766AA DK124835B (da) | 1965-10-24 | 1966-06-23 | Kølekompressor med et hermetisk lukket hus og med et smøreoliepumpeaggregat i krumtapakselen. |
GB36293/66A GB1157523A (en) | 1965-10-24 | 1966-08-12 | Compressor Lubrication Arrangement. |
BE686039D BE686039A (ja) | 1965-10-24 | 1966-08-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US504327A US3334808A (en) | 1965-10-24 | 1965-10-24 | Compressor lubrication arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
US3334808A true US3334808A (en) | 1967-08-08 |
Family
ID=24005786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US504327A Expired - Lifetime US3334808A (en) | 1965-10-24 | 1965-10-24 | Compressor lubrication arrangement |
Country Status (6)
Country | Link |
---|---|
US (1) | US3334808A (ja) |
BE (1) | BE686039A (ja) |
DE (1) | DE1503446A1 (ja) |
DK (1) | DK124835B (ja) |
GB (1) | GB1157523A (ja) |
NL (1) | NL6608312A (ja) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448918A (en) * | 1967-10-23 | 1969-06-10 | Lennox Ind Inc | Discharge gas manifold construction for hermetic refrigerant compressor |
DE1961271A1 (de) * | 1968-12-10 | 1970-07-09 | Gen Electric | Belueftungssystem fuer hermetisch verschlossenes Kurbelgehaeuse eines Motorkompressors |
US3922114A (en) * | 1974-07-19 | 1975-11-25 | Dunham Bush Inc | Hermetic rotary helical screw compressor with improved oil management |
US4111612A (en) * | 1977-04-07 | 1978-09-05 | Sundstrand Corporation | Hermetic compressor lubrication system |
US4140441A (en) * | 1977-04-11 | 1979-02-20 | Patterson Williams G | Turbomolecular pump lubrication system |
US4396361A (en) * | 1979-01-31 | 1983-08-02 | Carrier Corporation | Separation of lubricating oil from refrigerant gas in a reciprocating compressor |
US4488855A (en) * | 1982-12-27 | 1984-12-18 | The Trane Company | Main bearing lubrication system for scroll machine |
US5168960A (en) * | 1991-03-19 | 1992-12-08 | Bristol Compressors | Compressor crankshaft bearing cap and assembly |
US6264446B1 (en) | 2000-02-02 | 2001-07-24 | Copeland Corporation | Horizontal scroll compressor |
US20030228233A1 (en) * | 2002-06-11 | 2003-12-11 | Dreiman Nelik I. | Lubrication of a hermetic carbon dioxide compressor |
US20060057000A1 (en) * | 2003-10-24 | 2006-03-16 | Seong-Yeol Hyeon | Reciprocating compressor |
US20100319547A1 (en) * | 2007-02-09 | 2010-12-23 | Daikin Industries, Ltd. | Reciprocating compressor and oxygen concentrator |
US20110052422A1 (en) * | 2008-06-17 | 2011-03-03 | Continental Aktiengesellschaft | Method for controlling the operation of a compressor |
US20200300247A1 (en) * | 2013-12-01 | 2020-09-24 | Aspen Compressor, Llc | Compact low noise rotary compressor |
US11125233B2 (en) | 2019-03-26 | 2021-09-21 | Emerson Climate Technologies, Inc. | Compressor having oil allocation member |
US11680568B2 (en) | 2018-09-28 | 2023-06-20 | Emerson Climate Technologies, Inc. | Compressor oil management system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009003745A1 (de) | 2009-04-06 | 2010-10-07 | Continental Aktiengesellschaft | Verfahren zur Steuerung des Betriebs eines Kompressors |
CN210135051U (zh) * | 2019-06-19 | 2020-03-10 | 艾默生环境优化技术(苏州)有限公司 | 轴组件和包括该轴组件的压缩机 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246868A (en) * | 1938-04-11 | 1941-06-24 | Mills Novelty Co | Compressor |
US3008628A (en) * | 1957-10-03 | 1961-11-14 | Carrier Corp | Compressor |
US3229901A (en) * | 1964-04-20 | 1966-01-18 | Lennox Ind Inc | Refrigerant compressor |
-
1965
- 1965-10-24 US US504327A patent/US3334808A/en not_active Expired - Lifetime
-
1966
- 1966-05-20 DE DE19661503446 patent/DE1503446A1/de active Pending
- 1966-06-15 NL NL6608312A patent/NL6608312A/xx unknown
- 1966-06-23 DK DK324766AA patent/DK124835B/da unknown
- 1966-08-12 GB GB36293/66A patent/GB1157523A/en not_active Expired
- 1966-08-26 BE BE686039D patent/BE686039A/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246868A (en) * | 1938-04-11 | 1941-06-24 | Mills Novelty Co | Compressor |
US3008628A (en) * | 1957-10-03 | 1961-11-14 | Carrier Corp | Compressor |
US3229901A (en) * | 1964-04-20 | 1966-01-18 | Lennox Ind Inc | Refrigerant compressor |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3448918A (en) * | 1967-10-23 | 1969-06-10 | Lennox Ind Inc | Discharge gas manifold construction for hermetic refrigerant compressor |
DE1961271A1 (de) * | 1968-12-10 | 1970-07-09 | Gen Electric | Belueftungssystem fuer hermetisch verschlossenes Kurbelgehaeuse eines Motorkompressors |
US3922114A (en) * | 1974-07-19 | 1975-11-25 | Dunham Bush Inc | Hermetic rotary helical screw compressor with improved oil management |
US4111612A (en) * | 1977-04-07 | 1978-09-05 | Sundstrand Corporation | Hermetic compressor lubrication system |
US4140441A (en) * | 1977-04-11 | 1979-02-20 | Patterson Williams G | Turbomolecular pump lubrication system |
US4396361A (en) * | 1979-01-31 | 1983-08-02 | Carrier Corporation | Separation of lubricating oil from refrigerant gas in a reciprocating compressor |
US4488855A (en) * | 1982-12-27 | 1984-12-18 | The Trane Company | Main bearing lubrication system for scroll machine |
US5168960A (en) * | 1991-03-19 | 1992-12-08 | Bristol Compressors | Compressor crankshaft bearing cap and assembly |
US6264446B1 (en) | 2000-02-02 | 2001-07-24 | Copeland Corporation | Horizontal scroll compressor |
US7044717B2 (en) * | 2002-06-11 | 2006-05-16 | Tecumseh Products Company | Lubrication of a hermetic carbon dioxide compressor |
US20030228233A1 (en) * | 2002-06-11 | 2003-12-11 | Dreiman Nelik I. | Lubrication of a hermetic carbon dioxide compressor |
US20060057000A1 (en) * | 2003-10-24 | 2006-03-16 | Seong-Yeol Hyeon | Reciprocating compressor |
US7491038B2 (en) * | 2003-10-24 | 2009-02-17 | Lg Electronics Inc. | Reciprocating compressor |
US20100319547A1 (en) * | 2007-02-09 | 2010-12-23 | Daikin Industries, Ltd. | Reciprocating compressor and oxygen concentrator |
US8435013B2 (en) * | 2007-02-09 | 2013-05-07 | Daikin Industries, Ltd. | Reciprocating compressor and oxygen concentrator |
US20110052422A1 (en) * | 2008-06-17 | 2011-03-03 | Continental Aktiengesellschaft | Method for controlling the operation of a compressor |
US9932978B2 (en) | 2008-06-17 | 2018-04-03 | Continental Teves Ag & Co. Ohg | Method for controlling the operation of a compressor |
US20200300247A1 (en) * | 2013-12-01 | 2020-09-24 | Aspen Compressor, Llc | Compact low noise rotary compressor |
US11680568B2 (en) | 2018-09-28 | 2023-06-20 | Emerson Climate Technologies, Inc. | Compressor oil management system |
US11125233B2 (en) | 2019-03-26 | 2021-09-21 | Emerson Climate Technologies, Inc. | Compressor having oil allocation member |
Also Published As
Publication number | Publication date |
---|---|
GB1157523A (en) | 1969-07-09 |
DE1503446A1 (de) | 1970-08-13 |
DK124835B (da) | 1972-11-27 |
BE686039A (ja) | 1967-02-27 |
NL6608312A (ja) | 1967-04-25 |
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