EP1811174A2 - Structure de séparation de l'huile dans un compresseur - Google Patents

Structure de séparation de l'huile dans un compresseur Download PDF

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Publication number
EP1811174A2
EP1811174A2 EP07100878A EP07100878A EP1811174A2 EP 1811174 A2 EP1811174 A2 EP 1811174A2 EP 07100878 A EP07100878 A EP 07100878A EP 07100878 A EP07100878 A EP 07100878A EP 1811174 A2 EP1811174 A2 EP 1811174A2
Authority
EP
European Patent Office
Prior art keywords
oil separation
chamber
oil
muffler
separation chamber
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.)
Withdrawn
Application number
EP07100878A
Other languages
German (de)
English (en)
Other versions
EP1811174A3 (fr
Inventor
Yoshinori Inoue
Naoki Koeda
Masaya Sakamoto
Tomoji Tarutani
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.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP1811174A2 publication Critical patent/EP1811174A2/fr
Publication of EP1811174A3 publication Critical patent/EP1811174A3/fr
Withdrawn legal-status Critical Current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
    • F04B27/08—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
    • 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
    • F04B27/1081—Casings, housings
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • 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
    • F04B39/16—Filtration; Moisture separation
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • F05B2260/962—Preventing, counteracting or reducing vibration or noise by means creating "anti-noise"
    • 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

Definitions

  • the present invention relates to an oil separation structure in a compressor.
  • Japanese Laid-Open Patent Publication No. 11-182430 discloses a compressor having a muffler forming portion.
  • the muffler forming portion is located on the outer circumference of a cylinder block that forms a part of the compressor housing.
  • a first muffler chamber is defined in the muffler forming portion.
  • the muffler forming portion is coupled to a muffler cover (muffler forming member).
  • a second muffler chamber is defined in the muffler cover.
  • a swirl chamber is defined in the first muffler chamber.
  • a downwardly projecting cylindrical oil separator is provided in the swirl chamber. As pistons reciprocate, refrigerant is discharged to a discharge chamber from the cylinder bores.
  • the refrigerant is then led to the first muffler chamber via a discharge passage.
  • the refrigerant flows into the swirl chamber.
  • the refrigerant flows downward while swirling along the circumferential wall of the swirl chamber.
  • Oil contained in the refrigerant that has entered the swirl chamber is separated as the refrigerant swirls in the swirl chamber.
  • the refrigerant then flows to the second muffler chamber from a lower end and the interior of the cylindrical oil separator.
  • the oil, which has been separated from refrigerant in the swirl chamber is supplied to a crank chamber that accommodates a swash plate through a recovery passage.
  • the lubricant oil supplied to the crank chamber lubricates parts in the compressor that needs lubrication.
  • the swirl chamber is preferably prolonged in the direction from the muffler cover to the cylinder block.
  • the swirl chamber oil separation chamber
  • the required strength of the cylinder block cannot be ensured. Therefore, the length of the swirl chamber cannot be simply prolonged.
  • an objective of the present invention to provide an oil separation structure that is capable of increasing the length of an oil separation chamber, thereby improving the oil separation performance.
  • an oil separation structure provided in a discharge pressure zone in a compressor includes: a piston for compressing refrigerant containing oil; a housing defining a cylinder bore for accommodating the piston.
  • the housing has a circumferential surface.
  • the compressor further includes a muffler forming member coupled to the circumferential surface of the housing.
  • the muffler defines a muffler chamber.
  • the refrigerant discharged from the cylinder bore is sent to the muffler chamber.
  • the oil separation structure in the compressor includes an oil separation chamber separating the oil from the refrigerant.
  • the oil separation chamber extends into both the muffler forming member and the housing.
  • the oil separation chamber has a refrigerant inlet through which the refrigerant flows into the oil separation chamber.
  • the refrigerant inlet is formed in the muffler forming member.
  • a fixed displacement piston compressor according to a first embodiment of the present invention will now be described with reference to Figs. 1A to 5.
  • a front housing member 12 and a rear housing member 13 are coupled to a cylinder block 11.
  • a suction chamber 131 and a discharge chamber 132 are defined in the rear housing member 13.
  • the cylinder block 11, the front housing member 12, and the rear housing member 13 form a housing of a compressor 10.
  • a rotary shaft 14 is rotatably supported by the cylinder block 11 and the front housing member 12.
  • the rotary shaft 14 extends through shaft holes 111, 121 formed in the cylinder block 11 and the front housing member 12.
  • the rotary shaft 14 is supported by the cylinder block 11 and the front housing member 12 with radial bearings 18, 19 located in the shaft holes 111, 121.
  • a swash plate 16 is fixed to the rotary shaft 14.
  • the swash plate 16, which functions as a cam member, is accommodated in a cam chamber 17.
  • the swash plate 16 is pressed against a thrust bearing 44 located between the front housing member 12 and the swash plate 16 by the force of a compression spring 43.
  • the force of the compression spring 43 prevents the rotary shaft 14 from chattering in the axial direction.
  • a sealing device 15 of lip seal type is located between the front housing member 12 and the rotary shaft 14.
  • An accommodation chamber 45 for accommodating the sealing device 15 communicates with the cam chamber 17.
  • the sealing device 15 prevents refrigerant from leaking through between the circumferential surface of the rotary shaft 14 and the front housing member 12.
  • the cam chamber 17 is connected to an external refrigerant circuit 28 via a suction hole 122 formed in the front housing member 12.
  • a heat exchanger 29 for removing heat from refrigerant, an expansion valve 30, and a heat exchanger 31 for transferring the ambient heat to refrigerant are located on the external refrigerant circuit 28.
  • Cylinder bores 20 are formed in the cylinder block 11 to surround the rotary shaft 14. As show in Fig. 2, the number the cylinder bores 20 is five in this embodiment. A piston 21 is retained in each cylinder bore 20.
  • each piston 21 reciprocates back and forth inside the corresponding cylinder bore 20. That is, the pistons 21 are interlinked with rotation of the rotary shaft 14 by means of the swash plate 16, which is integrated with the rotary shaft 14.
  • Each piston 21 defines a compression chamber 201 in the corresponding cylinder bore 20.
  • a valve plate 23, suction valve plate 24, discharge valve plate 25, and a retainer plate 26 are arranged between the cylinder block 11 and the rear housing member 13.
  • Suction ports 231 are formed in the valve plate 23, the discharge valve plate 25, and the retainer plate 26.
  • Discharge ports 232 are formed in the valve plate 23 and the suction valve plate 24.
  • Flexible suction valves 241 are formed on the suction valve plate 24, and flexible discharge valves 251 are formed on the discharge valve plate25.
  • the suction valves 241 open and close the suction ports 231, and the discharge valves 251 open and close the discharge ports 232.
  • Retainers 261 are formed on the retainer plate 26. The retainers 261 limit the opening degree of the discharge valve 251.
  • An in-shaft passage 142 is formed in the rotary shaft 14.
  • the in-shaft passage 142 communicates with the suction chamber 131 through a bore 46 extending through the valve plate 23.
  • the rotary shaft 14 has an inlet hole 27, which communicates with the in-shaft passage 142.
  • the entrance of the inlet hole 27 of the rotary shaft 14 is located between the swash plate 16 and the cylinder block 11.
  • Gaseous refrigerant in the cam chamber 17 flows into the in-shaft passage 142 via the inlet hole 27.
  • the refrigerant in the in-shaft passage 142 flows to the suction chamber 131.
  • each cylinder bore 20 When each cylinder bore 20 is in a suction stroke, that is, when the associated piston 21 is moved from right to left as viewed in Fig. 1A, refrigerant in the suction chamber 131 is drawn into the cylinder bore 20 (the compression chamber 201) through the corresponding suction port 231, while opening the suction valve 241.
  • gaseous refrigerant in the cylinder bore 20 (the compression chamber 201) is discharged to the discharge chamber 132 through the corresponding discharge port 232, while opening the discharge valve 251.
  • the thrust bearing 44 receives discharge reaction force that acts on the swash plate 16 from the cylinder bores 20 through the pistons 21 and the shoes 22.
  • a mount 32 is integrally formed with and projects from an upper portion of the outer circumferential surface 110 of the cylinder block 11, which forms a part of the entire housing of the compressor 10. As shown in Fig. 1B, the upper end of the mount 32 is flat. A muffler forming member 33 is coupled to the upper end of the mount 32 with a flat plate-like sealing gasket 34 in between. As shown in Figs. 2 and 4, the muffler forming member 33 and the gasket 34 are secured to the mount 32 by means of screws 35.
  • a lower oil separation chamber 361 is defined in the mount 32 of the cylinder block 11, and an upper oil separation chamber 362 is defined in the muffler forming member 33.
  • the upper oil separation chamber 362 communicates with the lower oil separation chamber 361. That is, an oil separation chamber 36 includes the lower oil separation chamber 361 and the upper oil separation chamber 362, and the oil separation chamber 36 extending into the mount 32 and the muffler forming member 33.
  • the oil separation chamber 36 is cylindrical and has a circumferential surface 363. The axis of the circumferential surface 363 is perpendicular to the gasket 34.
  • the lower oil separation chamber 361 is defined above a first intervening portion 115 of the cylinder block 11.
  • the first intervening portion 115 is located between a first cylinder bore 20A, which is the topmost one of the cylinder bores 20, and a second cylinder bore 20B, which is adjacent to the first cylinder bore 20A.
  • the second cylinder bore 20B is the one to the left of the first cylinder 20A as viewed in Fig. 3. That is, a bottom 365 of the lower oil separation chamber 361 is located above the first intervening portion 115.
  • An oil reservoir chamber 37 is defined in the mount 32 to communicate with the lower oil separation chamber 361 in the mount 32 of the cylinder block 11.
  • a bottom 375 of the reservoir chamber 37 is located above a second intervening portion 116.
  • the second intervening portion 116 is located between the first cylinder bore 20A, which is the topmost one of the cylinder bore 20, and a third cylinder bore 20C, which is adjacent to the first cylinder bore 20A.
  • the third cylinder bore 20C is the one to the right of the first cylinder 20A as viewed in Fig. 3. That is, the oil reservoir chamber 37 is located adjacent to the oil separation chamber 36 in the circumferential direction of the cylinder block 11.
  • the oil reservoir chamber 37 is connected to the cam chamber 17 through an oil supply passage 112.
  • the inlet of the oil supply passage 112 is located in the bottom of the oil reservoir chamber 37.
  • the oil reservoir chamber 37 is divided from the lower oil separation chamber 361 by an arcuate dividing wall 38, which is formed integrally with the mount 32.
  • the oil reservoir chamber 37 communicates with the lower oil separation chamber 361 through a port 39 at the end of the arcuate dividing wall 38.
  • the port 39 is located at a position higher than the bottom of the lower oil separation chamber 361.
  • a discharge passage 40 is formed in the mount 32 and the muffler forming member 33, extending through the gasket 34.
  • the discharge passage 40 includes a lower discharge passage 401 and an upper discharge passage 402.
  • the lower discharge passage 401 is formed in the mount 32, and communicates with the discharge chamber 132.
  • the upper discharge passage 402 is defined in the muffler forming member 33 to communicate with the lower discharge passage 401.
  • the upper discharge passage 402 is connected to the upper oil separation chamber 362 through a port 403 formed in the circumferential wall of the upper oil separation chamber 362. That is, the port 403 serves as an outlet of the upper discharge passage 402, and serves as an inlet of the upper oil separation chamber 362.
  • the port 403 is directed to the circumferential surface 363 of the upper oil separation chamber 362 as indicated by arrow R in Fig. 5 when viewed from above the compressor 10 (as viewed along the longitudinal direction of the oil separation chamber 36).
  • Gaseous refrigerant in the discharge chamber 132 flows into the upper oil separation chamber 362 via the discharge passage 40.
  • Refrigerant that flows into the oil separation chamber 36 via the port 403 serving as the refrigerant inlet swirls counterclockwise in the oil separation chamber 36 when viewed from above the compressor 10.
  • an oil separating cylinder 41 is integrally formed with the muffler forming member 33.
  • the oil separating cylinder 41 extends into the upper oil separation chamber 362 from the muffler forming member 33 toward the mount 32.
  • An opening 411 at the lower end of the oil separating cylinder 41 opens to the upper oil separation chamber 362 to face the cylinder block 11 at a position lower than the port 403 of the upper oil separation chamber 362.
  • the muffler forming member 33 is formed such that a muffler chamber 42 communicates with a passage 412 in the oil separating cylinder 41.
  • the muffler chamber 42 communicates with the external refrigerant circuit 28 via a discharge hole 47 to discharge the refrigerant from the compressor 10.
  • the muffler chamber 42 is divided from the oil reservoir chamber 37 by the gasket 34 serving as a partition.
  • refrigerant flows out to the external refrigerant circuit 28 via the discharge passage 40, the port 403 serving as a refrigerant inlet, the oil separation chamber 36, the opening 411 serving as a refrigerant outlet, the passage 412 in the oil separating cylinder 41, the muffler chamber 42, and the discharge hole 47.
  • This discharge path from the discharge chamber 132 to the external refrigerant circuit 28 constitutes a discharge pressure zone for receiving the discharged refrigerant. That is, the discharge chamber 132, the discharge passage 40, the port 403, the oil separation chamber 36, the opening 411, the passage 412, the muffler chamber 42, and the discharge hole 47 are parts of the discharge pressure zone.
  • the refrigerant After being discharged to the external refrigerant circuit 28, the refrigerant is returned to the cam chamber 17, which is a suction pressure zone.
  • the circuit including the compressor 10 and the external refrigerant circuit 28 contains oil, which flows together with refrigerant. After flowing into the oil separation chamber 36 through the port 403, refrigerant flows toward the bottom of the oil separation chamber 36 while swirling in the direction of arrow R along the circumferential surface 363 of the oil separation chamber 36. This separates misted oil from the refrigerant. After being separated from the refrigerant, the oil is sent to the oil reservoir chamber 37 through the port 39. The oil separated from the refrigerant is stored in the oil reservoir chamber 37, and is then supplied to the cam chamber 17 via the oil supply passage 112. When supplied to the cam chamber 17, the oil lubricates parts that require lubrication in the cam chamber 17 (sliding portions of the swash plate 16 and the shoes 22, the sealing device 15, the radial bearings 18, 19, and the thrust bearing 44).
  • the first embodiment provides the following advantages.
  • the level of oil in the oil separation chamber 36 is not raised due to the existence of the oil reservoir chamber 37.
  • the present invention may be embodied in the following forms.
  • the lower oil separation chamber 361 and the oil reservoir chamber 37 in the cylinder block 11 may be divided from each other.
  • the bottom of the lower oil separation chamber 361 and the oil reservoir chamber 37 may be connected to each other by a communication passage 233 formed in the suction valve plate 24 and a valve plate 23 (see Fig. 1A) of the cylinder block 11.
  • the distal end of the oil separating cylinder 41 may extend into the lower oil separation chamber 361.
  • the oil reservoir chamber 37 of the first embodiment may be omitted, and a bottom portion of the lower oil separation chamber 361 may serve as an oil reservoir chamber.
  • the oil reservoir chamber 37 and the muffler chamber 42 may be divided from each other by a member other than the gasket 34.
  • the oil separating cylinder 41 may not be formed integrally with the muffler forming member 33.
  • the cylinder 41 may be attached to the muffler forming member 33.
  • a muffler forming member may be attached to the outer periphery of the front housing member 12, and an oil separation chamber may be formed to extend into the muffler forming member and the front housing member 12.
  • a muffler forming member may be formed across the cylinder block 11 and the front housing member 12.
  • a muffler forming member may be formed across the cylinder block 11 and the rear housing member 13 may be provided.
  • Oil in the oil reservoir chamber 37 may be directly supplied to the suction chamber 131.
  • the muffler chamber 42 may be formed between the discharge passage 40 and the oil separation chamber 36, so that refrigerant flows to the external refrigerant circuit 28 from the oil separation chamber 36 without passing through a muffler chamber.
  • the present invention may be applied to a compressor that directly draws refrigerant from an external refrigerant circuit to a suction chamber.
  • the present invention may be applied to a piston compressor having a cam member other than a swash plate.
  • the present invention may be applied to a variable displacement piston compressor as disclosed in Japanese Laid-Open Patent Publication No. 11-182430 .
  • a muffler forming member (33) defines a muffler chamber (42). Refrigerant discharged from a cylinder bore (20) is sent to the muffler chamber (42).
  • the muffler forming member (33) is coupled to a circumferential surface (110) of a housing (11) of a compressor (10).
  • An oil separation chamber (36) is defined in a discharge pressure zone (132, 40, 36, 42) of the compressor (10).
  • the oil separation chamber (36) separates the oil from the refrigerant discharged from the cylinder bore (20).
  • the oil separation chamber (36) extends into both the muffler forming member (33) and the housing (11).
  • the oil separation chamber (36) has a refrigerant inlet (403) through which the refrigerant flows into the oil separation chamber (36).
  • the refrigerant inlet (403) is formed in the muffler forming member (33). Therefore, the oil separation chamber (36) is prolonged in the direction from the muffler forming member toward the housing (11), thereby improving the oil separation performance (Fig. 3).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP07100878A 2006-01-23 2007-01-22 Structure de séparation de l'huile dans un compresseur Withdrawn EP1811174A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006013690A JP4730107B2 (ja) 2006-01-23 2006-01-23 圧縮機における油分離構造

Publications (2)

Publication Number Publication Date
EP1811174A2 true EP1811174A2 (fr) 2007-07-25
EP1811174A3 EP1811174A3 (fr) 2011-02-02

Family

ID=37946104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07100878A Withdrawn EP1811174A3 (fr) 2006-01-23 2007-01-22 Structure de séparation de l'huile dans un compresseur

Country Status (5)

Country Link
US (1) US20070177991A1 (fr)
EP (1) EP1811174A3 (fr)
JP (1) JP4730107B2 (fr)
KR (1) KR100796543B1 (fr)
CN (1) CN100585179C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2549108A2 (fr) 2011-07-22 2013-01-23 Volkswagen Aktiengesellschaft Amortissement du bruit dans un circuit de refroidissement
EP2055952A3 (fr) * 2007-11-05 2014-04-02 Kabushiki Kaisha Toyota Jidoshokki Compresseur à déplacement variable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5324893B2 (ja) * 2008-11-18 2013-10-23 サンデン株式会社 圧縮機の弁板装置
KR102012372B1 (ko) * 2014-09-12 2019-08-20 한온시스템 주식회사 스크롤 압축기의 오일 분리장치
KR102717000B1 (ko) * 2019-01-08 2024-10-15 한온시스템 주식회사 압축기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736690A2 (fr) * 1995-04-07 1996-10-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Structure de refroidissment pour compresseur
EP0926341A2 (fr) * 1997-12-24 1999-06-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Récupération de lubrifiant dans les compresseurs
US5997257A (en) * 1997-01-28 1999-12-07 Zexel Corporation Refrigerant compressor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3085514B2 (ja) * 1995-06-08 2000-09-11 株式会社豊田自動織機製作所 圧縮機
JPH09324758A (ja) * 1996-06-06 1997-12-16 Toyota Autom Loom Works Ltd カムプレート式圧縮機
JP3608299B2 (ja) * 1996-07-09 2005-01-05 株式会社豊田自動織機 両頭ピストン式圧縮機
JPH10196540A (ja) * 1997-01-10 1998-07-31 Toyota Autom Loom Works Ltd 圧縮機
JP2004036583A (ja) * 2002-07-05 2004-02-05 Denso Corp 圧縮機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736690A2 (fr) * 1995-04-07 1996-10-09 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Structure de refroidissment pour compresseur
US5997257A (en) * 1997-01-28 1999-12-07 Zexel Corporation Refrigerant compressor
EP0926341A2 (fr) * 1997-12-24 1999-06-30 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Récupération de lubrifiant dans les compresseurs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2055952A3 (fr) * 2007-11-05 2014-04-02 Kabushiki Kaisha Toyota Jidoshokki Compresseur à déplacement variable
EP2549108A2 (fr) 2011-07-22 2013-01-23 Volkswagen Aktiengesellschaft Amortissement du bruit dans un circuit de refroidissement
DE102011108372A1 (de) 2011-07-22 2013-01-24 Volkswagen Aktiengesellschaft Schalldämpfung in einem Kältemittelkreislauf
US8434586B2 (en) 2011-07-22 2013-05-07 Volkswagen Aktiengesellschaft Sound insulation in a refrigerant circuit

Also Published As

Publication number Publication date
JP4730107B2 (ja) 2011-07-20
EP1811174A3 (fr) 2011-02-02
CN100585179C (zh) 2010-01-27
JP2007192200A (ja) 2007-08-02
KR100796543B1 (ko) 2008-01-21
CN101092951A (zh) 2007-12-26
KR20070077432A (ko) 2007-07-26
US20070177991A1 (en) 2007-08-02

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