US20110274575A1 - Compressor, in particular a radial piston compressor for carbon dioxide as a refrigerant - Google Patents

Compressor, in particular a radial piston compressor for carbon dioxide as a refrigerant Download PDF

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Publication number
US20110274575A1
US20110274575A1 US13/145,910 US201013145910A US2011274575A1 US 20110274575 A1 US20110274575 A1 US 20110274575A1 US 201013145910 A US201013145910 A US 201013145910A US 2011274575 A1 US2011274575 A1 US 2011274575A1
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US
United States
Prior art keywords
compressor
cutout
fluid connection
drive shaft
axial
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.)
Abandoned
Application number
US13/145,910
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English (en)
Inventor
Frank Obrist
Martin Graz
Stefan Kross
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obrist Engineering GmbH
Bock GmbH
Original Assignee
Obrist Engineering GmbH
GEA Bock GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Obrist Engineering GmbH, GEA Bock GmbH filed Critical Obrist Engineering GmbH
Publication of US20110274575A1 publication Critical patent/US20110274575A1/en
Assigned to GEA BOCK GMBH, OBRIST ENGINEERING GMBH reassignment GEA BOCK GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GRAZ, MARTIN, KROSS, STEFAN, OBRIST, FRANK
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/053—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with an actuating element at the inner ends of the cylinders
    • F04B27/0531—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with an actuating element at the inner ends of the cylinders with cam-actuated distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/109—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/04—Measures to avoid lubricant contaminating the pumped fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/045—Heating; Cooling; Heat insulation of the electric motor in hermetic pumps
    • 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
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • 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
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type

Definitions

  • the present invention relates to a compressor, in particular a radial piston compressor, more particularly a compressor for CO 2 as refrigerant, as per the preamble of patent claim 1 .
  • Compressors in particular compressors for refrigerant such as for example R134a, R404A, R507, R407c, R22 or R744 (CO 2 ), have become indispensible in this day and age and are used inter alia in the field of mobile cooling and air conditioning, such as for example the air-conditioning of passenger motor vehicles and utility vehicles, the air-conditioning of buses and trains and in-transit cooling, and also in the static cooling of foodstuffs, in refrigerated warehouses or in the field of medical technology.
  • Such compressors are nowadays essential also in the field of air conditioning for buildings.
  • compressors which are used in some of the fields mentioned are known from the applicant's semi-hermetics catalog.
  • reciprocating piston compressors having two, four, six and eight cylinders, which have swept volumes of approximately 62 cm 3 -3,215 cm 3 , are known from said catalog.
  • DE 103 56 373 A1 discloses a compressor in the form of a radial piston compressor which comprises a compressor unit for compressing refrigerant and comprises a drive shaft for driving the compressor unit.
  • the central points of the pistons are arranged in a common plane through which the drive shaft extends perpendicularly, or to which a central axis extending in the longitudinal direction of the drive shaft is perpendicular.
  • compressors in particular radial piston compressors, whose drive shaft is operatively connected to an electric motor, the motor being delimited substantially by a motor housing which in its interior defines a motor chamber, the motor chamber being fluidically connected via a bore in the drive shaft to a suction gas chamber from which the refrigerant to be compressed is sucked.
  • a partial mass flow of the suction gas from the suction gas chamber is supplied to the motor chamber via a duct and is supplied to the suction gas volume again via the abovementioned bore in the drive shaft.
  • the partial mass flow conducted back to the suction gas volume contains oil. Said oil is used for lubricating bearings or the like.
  • a situation may arise (for example at low rotational speeds) in which optimum lubrication does not take place.
  • FIG. 1 shows a first embodiment of a compressor according to the invention in a partially sectional illustration in a horizontal installation situation
  • FIG. 2 shows the embodiment as per FIG. 1 in a vertical installation situation
  • FIG. 3 shows a detailed illustration of a detail from FIGS. 1 and 2 ;
  • FIG. 4 shows a detailed illustration of a second possible embodiment of a compressor according to the invention, similar to the illustration in FIG. 3 ;
  • FIG. 5 shows a detailed illustration of a third possible embodiment of a compressor according to the invention, similar to the illustration in FIG. 3 .
  • the first embodiment of a compressor 10 has a compressor unit 12 and a motor unit 14 .
  • the motor unit 14 has a motor housing 16 which, in the first embodiment, delimits not only a motor chamber 18 but also, in part, the compressor unit 12 .
  • a drive shaft 22 Arranged in the motor chamber 18 in addition to an electric motor is a drive shaft 22 via which the motor 20 is operatively connected to the compressor unit 12 .
  • the compressor unit 12 has six pistons 24 which are arranged in the radial direction.
  • the pistons 24 are arranged in a common plane spanned by the piston longitudinal axes which extend in the piston longitudinal direction, which plane is perpendicular to the drive shaft 22 . It is pointed out at this juncture that a different number of pistons 24 is self-evidently also conceivable, wherein the number of pistons is determined in particular by the technical requirements of the user of the compressor 10 (swept volume and desired compression power).
  • the compressor unit 12 is provided for the compression of refrigerants, wherein common refrigerants such as for example R134a, R404A, R507, R407c, R22 or preferably R744 (CO 2 ) are conceivable as refrigerant.
  • the refrigerant passes, on a suction gas side, via a suction gas chamber 26 arranged at the suction gas side into cylinder bores 28 (which are formed in the radial direction) of the compressor 10 , in which cylinder bores the pistons 24 are arranged in a reciprocating fashion.
  • the compression of the refrigerant is realized by means of a movement of the pistons 24 in the radial direction.
  • the piston 24 When the piston 24 has arrived in an upper position in the cylinder bore 28 , that is to say the piston 24 has arrived in a radially outwardly facing position, the refrigerant which is then compressed is discharged into a compressed-gas chamber 30 which is arranged at the high-pressure side and from which the compressed refrigerant is provided to a refrigerant circuit assigned to the compressor 10 .
  • the compressor 10 also has, in addition to the compressor unit 12 and the motor unit 14 , an electrical terminal box 32 which is fastened to the motor housing 16 of the compressor 10 by means of fastening elements for example in the form of screws.
  • the stator of the electric motor 20 is positioned in the motor housing 16 and may be fixed to the latter for example by means of screws.
  • the electrical terminals for the compressor 10 are arranged in the terminal box 32 .
  • the terminal box 32 has a plurality of cable inlets 36 which, as illustrated in FIG. 1 , may be closed off when not being used, for example by means of closure elements.
  • the cable inlets 36 illustrated are preferably pre-punched, originally closed cutouts which are first opened by being pushed in. Therefore, no separate components are required; these are rather regions of the outer contour of the terminal box 32 which have been pre-punched such that they can be opened more easily.
  • a heat protection thermostat 38 is preferably not arranged so as to be in direct contact with the refrigerant but rather arranged in the motor housing 16 so as to be separate from the refrigerant. In this way, the heat protection thermostat 38 has only an indirect thermal connection to the refrigerant.
  • the heat protection thermostat 38 may be connected to elements in the terminal box 32 by means of a cable 39 , for example through a cable inlet 36 .
  • lubricant in the form of oil 41 is situated in the compressor 10 .
  • the oil 41 is stored in the motor chamber 18 , wherein the oil 41 is used not only for lubricating parts of the compressor 10 arranged in the motor chamber 18 but rather also for lubricating parts of the compressor 10 arranged outside the motor chamber 18 .
  • it is necessary to lubricate bearings 40 , 42 , 44 front bearing bush 42 , rear bearing bush 44 and bearing 40 for mounting the drive shaft 22 in the motor housing 16 ).
  • the movable parts of the compressor unit 12 in particular the pistons 24 , require corresponding lubrication.
  • the compressor 10 has a fluid connection 45 between the motor chamber 18 and the suction gas side (suction gas chamber 26 ), which fluid connection, aside from returning the partial mass flow which cools the motor, also serves for the lubrication of the bearings 40 , 42 , 44 .
  • the fluid connection 45 is formed to a large extent in the drive shaft 22 and consists inter alia of an axial cutout formed in the drive shaft 22 in the manner of a bore 46 extending in the axial direction.
  • the fluid connection 45 comprises four radial cutouts arranged in the radial direction in the drive shaft 22 , said radial cutouts taking the form of a first, a second, a third and a fourth radial bore 48 , 50 , 52 , 54 which are fluidically connected to the bore 46 .
  • the first radial bore 48 which extends through the entire drive shaft 22 so as to have two openings to the motor chamber 18 , serves for receiving the partial mass flow which also contains oil or oil mist.
  • the second, third and fourth radial bores 50 , 52 , 54 are provided for the lubrication of the bearings 40 , 42 , 44 . Oil 41 can emerge through said bores in the radial direction into the bearing points to be lubricated. The outflow of the oil 41 in the radial direction is assisted by the rotational movement of the drive shaft 22 and the resulting centrifugal forces generated.
  • the suction gas chamber 26 is connected to the motor chamber 18 by means of a fluid connection 45 .
  • the fluid connection 45 has inter alia the first radial bore 48 , which serves as an inlet for the partial mass flow, and the bore 46 which is fluidically connected to said first radial bore.
  • the fluid connection also has a radial bore 54 which is fluidically connected to the bore 46 .
  • the radial bore 54 is fluidically connected to a second axial cutout in the form of a second bore 56 which extends in the axial direction in the drive shaft 22 , which second bore has a cross section smaller than the cross section of the bore 46 and which second bore is fluidically connected, at its end facing away from the motor chamber 18 , to the suction gas chamber 26 .
  • a point of reduced cross section in the form of a nozzle 58 Arranged at the suction-gas-side end of the bore 56 is a point of reduced cross section in the form of a nozzle 58 which limits and defines the inflow of oil into the suction gas chamber 26 .
  • the nozzle 58 is selected at the factory and the corresponding cross section or the corresponding throughflow rate is adapted to the design requirements.
  • the oil inflow may be regulated by means of the bore cross section of the radial bore 54 or of the axial bore 56 , for example by means of the bore cross section itself or by means of a constriction arranged in the bore 54 or 56 , or an orifice or a flap, in addition to the nozzle 58 or instead of the nozzle 58 .
  • the orifice or flap may be designed so as to be non-adjustable or adjustable, such that by means thereof, the oil flow or the lubrication via the suction gas chamber 26 can be controlled or regulated as a function of external parameters and if appropriate also as a function of parameters of the compressor itself.
  • the nozzle 58 it is possible for the nozzle 58 to be provided with a variable nozzle cross section and/or an upstream valve which opens or closes on a predetermined or variable clock cycle such that the oil quantity supplied to the suction gas chamber 26 can be regulated or controlled.
  • the two axial cutouts 46 and 56 are formed in the drive shaft 22 preferably axially parallel to one another with a radial spacing, and preferably in the manner of axially parallel bores.
  • a device for causing a build-up of oil in the form of a tubular element or tube 60 , is arranged in the fluid connection 45 , which device serves to ensure that sufficient oil 41 is supplied to the nozzle 58 and to the radial bores 52 , 54 .
  • the tube 60 on account of its being fluidically connected, at its side facing away from the motor chamber, to the suction gas volume, serves to ensure the return of the partial mass flow from the motor into the suction gas chamber.
  • An oil overflow device in the form of a tube 61 which is pressed into the drive shaft 22 and which extends into the axial bore 46 serves for the discharge of excess built-up oil 41 .
  • the tube 60 is provided not for the lubrication of the compressor unit 12 but rather merely as an oil overflow in the event that too large an oil quantity has built up.
  • the device for causing a build-up of oil, in the form of the tube 60 is designed to cause a build-up of oil 41 while maintaining an uninterrupted fluid connection.
  • the tube 60 has an outer diameter smaller than the diameter of the axial bore 46 , and that the tube 60 is arranged concentrically with respect to the axial bore 46 and projects into the latter. As an alternative to this, a non-concentric, parallel arrangement with respect to the bore is also conceivable.
  • the compressor 10 illustrated in FIG. 1 is illustrated in a vertical installation situation in FIG. 2 , wherein in this installation situation, the lubricant in the form of the oil 41 covers the radial cutout (radial bore 48 ). Operation is possible even with a covered radial cutout, wherein it would also be conceivable for the radial bore 48 to be arranged above the oil level, such that again, oil mist rather than oil 41 is sucked in.
  • tube 60 as a device for causing a build-up of oil, it is also conceivable for an orifice 62 (in this regard cf.
  • FIG. 4 arranged for example in the drive shaft 22 , and/or reservoir-like or basin-like cutouts 64 (in this regard, cf. FIG. 5 ) which extend in the radial direction, to be provided in the fluid connection 45 between the motor chamber 18 and the suction gas side or suction gas chamber 26 in order to cause a build-up of oil 41 .
  • the reservoir-like cutouts 64 are formed in the region of the radial bores 52 , 54 . It is self-evidently also conceivable for reservoir-like cutouts of said type to also be provided in the region of the further cutouts/bores arranged in the radial direction in the drive shaft. The centrifugal forces arising as the drive shaft 22 rotates ensure a reliable supply of oil to the cutouts 64 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US13/145,910 2009-01-24 2010-01-22 Compressor, in particular a radial piston compressor for carbon dioxide as a refrigerant Abandoned US20110274575A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009006040.5 2009-01-24
DE102009006040A DE102009006040A1 (de) 2009-01-24 2009-01-24 Verdichter
PCT/EP2010/050737 WO2010084177A1 (de) 2009-01-24 2010-01-22 Verdichter, insbesondere radialkolbenverdichter für kohlenstoffdioxid als kältemittel

Publications (1)

Publication Number Publication Date
US20110274575A1 true US20110274575A1 (en) 2011-11-10

Family

ID=42107380

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/145,910 Abandoned US20110274575A1 (en) 2009-01-24 2010-01-22 Compressor, in particular a radial piston compressor for carbon dioxide as a refrigerant

Country Status (7)

Country Link
US (1) US20110274575A1 (zh)
EP (1) EP2382391A1 (zh)
JP (1) JP2012515873A (zh)
CN (1) CN102439313A (zh)
AU (1) AU2010207729A1 (zh)
DE (1) DE102009006040A1 (zh)
WO (1) WO2010084177A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11543160B2 (en) * 2018-11-22 2023-01-03 Bitzer Kuehlmaschinenbau Gmbh Refrigerant compressor with gas equalizer duct

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600094897A1 (it) * 2016-09-21 2018-03-21 Mgf S R L Gruppo di compressione per compressore privo di lubrificazione
US20220025876A1 (en) * 2018-12-07 2022-01-27 Officine Mario Dorin S.P.A. Compressor

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US3926009A (en) * 1975-01-27 1975-12-16 Lennox Ind Inc Hermetic compressor with insulated discharge tube
JPH0765578B2 (ja) * 1988-12-07 1995-07-19 三菱電機株式会社 スクロール圧縮機
US5055010A (en) * 1990-10-01 1991-10-08 Copeland Corporation Suction baffle for refrigeration compressor
US5224840A (en) * 1991-03-28 1993-07-06 Tecumseh Products Company Integral suction system
DE19726943C2 (de) * 1997-06-25 2000-03-23 Bitzer Kuehlmaschinenbau Gmbh Kältemittelkompressor
JPH11257217A (ja) * 1998-03-16 1999-09-21 Toyota Autom Loom Works Ltd 片側可変容量型圧縮機
JP2001304127A (ja) * 2000-04-26 2001-10-31 Toyota Industries Corp 電動圧縮機
CN1273736C (zh) * 2002-04-29 2006-09-06 乐金电子(天津)电器有限公司 密闭型压缩机的抽油装置
JP2004301076A (ja) * 2003-03-31 2004-10-28 Sanyo Electric Co Ltd 半密閉型多段圧縮機
DE10358471A1 (de) * 2003-11-17 2005-06-23 Bitzer Kühlmaschinenbau Gmbh Kältemittelverdichter für Kraftfahrzeuge
DE10356373A1 (de) 2003-12-03 2005-07-07 Obrist Engineering Gmbh Hubkolbenmaschine
JP2006009613A (ja) * 2004-06-23 2006-01-12 Matsushita Electric Ind Co Ltd スクロール圧縮機
JP4848844B2 (ja) * 2006-05-30 2011-12-28 株式会社デンソー 電動圧縮機
US8038415B2 (en) * 2007-06-01 2011-10-18 Halla Climate Control Corp. Variable capacity swash plate type compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11543160B2 (en) * 2018-11-22 2023-01-03 Bitzer Kuehlmaschinenbau Gmbh Refrigerant compressor with gas equalizer duct

Also Published As

Publication number Publication date
CN102439313A (zh) 2012-05-02
EP2382391A1 (de) 2011-11-02
DE102009006040A1 (de) 2010-07-29
WO2010084177A1 (de) 2010-07-29
JP2012515873A (ja) 2012-07-12
AU2010207729A1 (en) 2011-08-18

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Date Code Title Description
AS Assignment

Owner name: GEA BOCK GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OBRIST, FRANK;GRAZ, MARTIN;KROSS, STEFAN;REEL/FRAME:027516/0897

Effective date: 20111110

Owner name: OBRIST ENGINEERING GMBH, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OBRIST, FRANK;GRAZ, MARTIN;KROSS, STEFAN;REEL/FRAME:027516/0897

Effective date: 20111110

STCB Information on status: application discontinuation

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