EP1811174A2 - Oil separation structure in compressor - Google Patents
Oil separation structure in compressor Download PDFInfo
- 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- Withdrawn
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 122
- 239000003507 refrigerant Substances 0.000 claims abstract description 78
- 238000005192 partition Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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)
Abstract
Description
- The present invention relates to an oil separation structure in a compressor.
-
Japanese Laid-Open Patent Publication No. 11-182430 - To improve the oil separation performance of the swirl chamber, the swirl chamber is preferably prolonged in the direction from the muffler cover to the cylinder block. However, if the swirl chamber (oil separation chamber) is excessively prolonged in the direction along the cylindrical oil separator, the required strength of the cylinder block cannot be ensured. Therefore, the length of the swirl chamber cannot be simply prolonged.
- Accordingly, it is 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.
- According to one aspect of the invention, an oil separation structure provided in a discharge pressure zone in a compressor is provided. The 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.
- Other aspects and advantages of the invention will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
- The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the presently preferred embodiments together with the accompanying drawings in which:
- Fig. 1A is a cross-sectional side view illustrating the entirety of a compressor according to a first embodiment;
- Fig. 1B is a partially enlarged cross-sectional view of the compressor shown in Fig. 1A;
- Fig. 2 is a cross-sectional view taken along line 2-2 of Fig. 1A;
- Fig. 3 is a cross-sectional view taken along line 3-3 of Fig. 1B;
- Fig. 4 is a cross-sectional view taken along line 4-4 of Fig. 3;
- Fig. 5 is a cross-sectional view taken along line 5-5 of Fig. 3; and
- Fig. 6 is a cross-sectional view illustrating a second embodiment.
- 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.
- As shown in Fig. 1A, a
front housing member 12 and arear housing member 13 are coupled to acylinder block 11. Asuction chamber 131 and adischarge chamber 132 are defined in therear housing member 13. Thecylinder block 11, thefront housing member 12, and therear housing member 13 form a housing of acompressor 10. - A
rotary shaft 14 is rotatably supported by thecylinder block 11 and thefront housing member 12. Therotary shaft 14 extends throughshaft holes 111, 121 formed in thecylinder block 11 and thefront housing member 12. Therotary shaft 14 is supported by thecylinder block 11 and thefront housing member 12 withradial bearings 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 acam chamber 17. The swash plate 16 is pressed against a thrust bearing 44 located between thefront housing member 12 and the swash plate 16 by the force of acompression spring 43. The force of thecompression spring 43 prevents therotary shaft 14 from chattering in the axial direction. - A
sealing device 15 of lip seal type is located between thefront housing member 12 and therotary shaft 14. Anaccommodation chamber 45 for accommodating thesealing device 15 communicates with thecam chamber 17. Thesealing device 15 prevents refrigerant from leaking through between the circumferential surface of therotary shaft 14 and thefront housing member 12. - The
cam chamber 17 is connected to anexternal refrigerant circuit 28 via asuction hole 122 formed in thefront housing member 12. Aheat exchanger 29 for removing heat from refrigerant, anexpansion valve 30, and aheat exchanger 31 for transferring the ambient heat to refrigerant are located on the externalrefrigerant circuit 28. - Cylinder bores 20 are formed in the
cylinder block 11 to surround therotary shaft 14. As show in Fig. 2, the number the cylinder bores 20 is five in this embodiment. Apiston 21 is retained in each cylinder bore 20. - Rotation of the swash plate 16, which rotates integrally with the
rotary shaft 14, is converted into reciprocation of thepistons 21 viashoes 22, which slide on the swash plate 16 as shown in Fig. 1A. Thus, eachpiston 21 reciprocates back and forth inside the corresponding cylinder bore 20. That is, thepistons 21 are interlinked with rotation of therotary shaft 14 by means of the swash plate 16, which is integrated with therotary shaft 14. Eachpiston 21 defines acompression chamber 201 in the corresponding cylinder bore 20. - A
valve plate 23,suction valve plate 24,discharge valve plate 25, and aretainer plate 26 are arranged between thecylinder block 11 and therear housing member 13.Suction ports 231 are formed in thevalve plate 23, thedischarge valve plate 25, and theretainer plate 26.Discharge ports 232 are formed in thevalve plate 23 and thesuction valve plate 24.Flexible suction valves 241 are formed on thesuction valve plate 24, andflexible discharge valves 251 are formed on the discharge valve plate25. Thesuction valves 241 open and close thesuction ports 231, and thedischarge valves 251 open and close thedischarge ports 232.Retainers 261 are formed on theretainer plate 26. Theretainers 261 limit the opening degree of thedischarge valve 251. - An in-shaft passage 142 is formed in the
rotary shaft 14. The in-shaft passage 142 communicates with thesuction chamber 131 through abore 46 extending through thevalve 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 therotary shaft 14 is located between the swash plate 16 and thecylinder block 11. Gaseous refrigerant in thecam chamber 17 flows into the in-shaft passage 142 via the inlet hole 27. The refrigerant in the in-shaft passage 142 flows to thesuction chamber 131. - 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 thesuction chamber 131 is drawn into the cylinder bore 20 (the compression chamber 201) through the correspondingsuction port 231, while opening thesuction valve 241. When each cylinder bore 20 is in a discharge stroke, that is, when the associatedpiston 21 is moved from left to right as viewed in Fig. 1A, gaseous refrigerant in the cylinder bore 20 (the compression chamber 201) is discharged to thedischarge chamber 132 through thecorresponding discharge port 232, while opening thedischarge valve 251. Thethrust bearing 44 receives discharge reaction force that acts on the swash plate 16 from the cylinder bores 20 through thepistons 21 and theshoes 22. - A
mount 32 is integrally formed with and projects from an upper portion of the outercircumferential surface 110 of thecylinder block 11, which forms a part of the entire housing of thecompressor 10. As shown in Fig. 1B, the upper end of themount 32 is flat. Amuffler forming member 33 is coupled to the upper end of themount 32 with a flat plate-like sealing gasket 34 in between. As shown in Figs. 2 and 4, themuffler forming member 33 and thegasket 34 are secured to themount 32 by means ofscrews 35. - As shown in Fig. 3, a lower
oil separation chamber 361 is defined in themount 32 of thecylinder block 11, and an upperoil separation chamber 362 is defined in themuffler forming member 33. The upperoil separation chamber 362 communicates with the loweroil separation chamber 361. That is, anoil separation chamber 36 includes the loweroil separation chamber 361 and the upperoil separation chamber 362, and theoil separation chamber 36 extending into themount 32 and themuffler forming member 33. As shown in Fig. 4, theoil separation chamber 36 is cylindrical and has acircumferential surface 363. The axis of thecircumferential surface 363 is perpendicular to thegasket 34. - The lower
oil separation chamber 361 is defined above afirst intervening portion 115 of thecylinder block 11. Thefirst 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 thefirst cylinder bore 20A. The second cylinder bore 20B is the one to the left of thefirst cylinder 20A as viewed in Fig. 3. That is, abottom 365 of the loweroil separation chamber 361 is located above thefirst intervening portion 115. Anoil reservoir chamber 37 is defined in themount 32 to communicate with the loweroil separation chamber 361 in themount 32 of thecylinder block 11. A bottom 375 of thereservoir chamber 37 is located above asecond intervening portion 116. Thesecond 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 thefirst cylinder bore 20A. The third cylinder bore 20C is the one to the right of thefirst cylinder 20A as viewed in Fig. 3. That is, theoil reservoir chamber 37 is located adjacent to theoil separation chamber 36 in the circumferential direction of thecylinder block 11. - As shown in Fig. 1B, the
oil reservoir chamber 37 is connected to thecam chamber 17 through anoil supply passage 112. The inlet of theoil supply passage 112 is located in the bottom of theoil reservoir chamber 37. - As shown in Fig. 4, the
oil reservoir chamber 37 is divided from the loweroil separation chamber 361 by anarcuate dividing wall 38, which is formed integrally with themount 32. Theoil reservoir chamber 37 communicates with the loweroil separation chamber 361 through aport 39 at the end of thearcuate dividing wall 38. As shown in Fig. 3, theport 39 is located at a position higher than the bottom of the loweroil separation chamber 361. - As shown in Fig. 3, a
discharge passage 40 is formed in themount 32 and themuffler forming member 33, extending through thegasket 34. Thedischarge passage 40 includes alower discharge passage 401 and anupper discharge passage 402. Thelower discharge passage 401 is formed in themount 32, and communicates with thedischarge chamber 132. Theupper discharge passage 402 is defined in themuffler forming member 33 to communicate with thelower discharge passage 401. Theupper discharge passage 402 is connected to the upperoil separation chamber 362 through aport 403 formed in the circumferential wall of the upperoil separation chamber 362. That is, theport 403 serves as an outlet of theupper discharge passage 402, and serves as an inlet of the upperoil separation chamber 362. - As shown in Fig. 5, the
port 403 is directed to thecircumferential surface 363 of the upperoil 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 thedischarge chamber 132 flows into the upperoil separation chamber 362 via thedischarge passage 40. Refrigerant that flows into theoil separation chamber 36 via theport 403 serving as the refrigerant inlet, swirls counterclockwise in theoil separation chamber 36 when viewed from above thecompressor 10. - As shown in Fig. 3, an
oil separating cylinder 41 is integrally formed with themuffler forming member 33. Theoil separating cylinder 41 extends into the upperoil separation chamber 362 from themuffler forming member 33 toward themount 32. Anopening 411 at the lower end of theoil separating cylinder 41 opens to the upperoil separation chamber 362 to face thecylinder block 11 at a position lower than theport 403 of the upperoil separation chamber 362. - The
muffler forming member 33 is formed such that amuffler chamber 42 communicates with apassage 412 in theoil separating cylinder 41. Themuffler chamber 42 communicates with the externalrefrigerant circuit 28 via adischarge hole 47 to discharge the refrigerant from thecompressor 10. Themuffler chamber 42 is divided from theoil reservoir chamber 37 by thegasket 34 serving as a partition. - After discharged to the
discharge chamber 132, refrigerant flows out to the externalrefrigerant circuit 28 via thedischarge passage 40, theport 403 serving as a refrigerant inlet, theoil separation chamber 36, theopening 411 serving as a refrigerant outlet, thepassage 412 in theoil separating cylinder 41, themuffler chamber 42, and thedischarge hole 47. This discharge path from thedischarge chamber 132 to the externalrefrigerant circuit 28 constitutes a discharge pressure zone for receiving the discharged refrigerant. That is, thedischarge chamber 132, thedischarge passage 40, theport 403, theoil separation chamber 36, theopening 411, thepassage 412, themuffler chamber 42, and thedischarge hole 47 are parts of the discharge pressure zone. After being discharged to the externalrefrigerant circuit 28, the refrigerant is returned to thecam chamber 17, which is a suction pressure zone. The circuit including thecompressor 10 and the externalrefrigerant circuit 28 contains oil, which flows together with refrigerant. After flowing into theoil separation chamber 36 through theport 403, refrigerant flows toward the bottom of theoil separation chamber 36 while swirling in the direction of arrow R along thecircumferential surface 363 of theoil separation chamber 36. This separates misted oil from the refrigerant. After being separated from the refrigerant, the oil is sent to theoil reservoir chamber 37 through theport 39. The oil separated from the refrigerant is stored in theoil reservoir chamber 37, and is then supplied to thecam chamber 17 via theoil supply passage 112. When supplied to thecam chamber 17, the oil lubricates parts that require lubrication in the cam chamber 17 (sliding portions of the swash plate 16 and theshoes 22, the sealingdevice 15, theradial bearings - The first embodiment provides the following advantages.
- (1) The longer the oil separation chamber 36 (in the direction from the
muffler forming member 33 toward the cylinder block 11), the longer the swirling distance of refrigerant swirling in theoil separation chamber 36. Accordingly, the oil separation performance in theoil separation chamber 36 is improved. Since theoil separation chamber 36 extends into thecylinder block 11 and themuffler forming member 33, which are parts of the entire housing, theoil separation chamber 36 is longer than in the case where an oil separation chamber is provided only in themount 32 of thecylinder block 11. Accordingly, the oil separation performance of theoil separation chamber 36 is improved. - (2) The
port 403 as the refrigerant inlet of theoil separation chamber 36 is formed in themuffler forming member 33. The discharged gas flows upward from thecylinder block 11, then into theoil separation chamber 36 through theport 403, and swirls around thecylinder 41 while flowing downwardly. Thereby, the swirling distance of the refrigerant is prolonged, and the oil separation performance is improved. - (3) If an oil reservoir chamber is located below the
oil separation chamber 36, a large amount of separated oil will be stored in theoil separation chamber 36, too. The stored oil significantly reduces the space of theoil separation chamber 36 for oil separation. In this case, the substantial length of the oil separation chamber 36 (in the direction from themuffler forming member 33 toward the cylinder block 11) will be shortened, and thus, the oil separation performance of theoil separation chamber 36 will be significantly reduced.
Since theoil reservoir chamber 37 is divided from theoil separation chamber 36 in the circumferential direction of thecylinder block 11, the space of theoil separation chamber 36 for oil separation is prevented from being significantly reduced by stored oil. - (4) If the
oil reservoir chamber 37 and themuffler chamber 42 are divided by a member other than thegasket 34, the number of parts of the compressor will be increased, which leads to an increased costs. Since thegasket 34 is a necessary part for preventing refrigerant from leaking from the joint section between the cylinder block 11 (the mount 32) and themuffler forming member 33, the structure in which thegasket 34 is used for dividing themuffler chamber 42 and theoil reservoir chamber 37 reduces the number of the parts. - (5) The
discharge passage 40 passes through thegasket 34 and communicates with theoil separation chamber 36. The structure in which thedischarge passage 40 passes through thegasket 34 is favorable structure for preventing refrigerant in thedischarge passage 40 from leaking through the joint section between the cylinder block 11 (the mount 32) and themuffler forming member 33. - (6) The longer the distance of the swirling motion of refrigerant in the
oil separation chamber 36, the more improved the oil separation performance becomes. Theoil separating cylinder 41 promotes swirling of refrigerant in theoil separation chamber 36, thereby increasing the swirling distance. The longer theoil separating cylinder 41, the longer the distance of the swirling motion of the refrigerant in theoil separation chamber 36. Since theoil separation chamber 36 is longer than an oil separation chamber that is provided only in thecylinder block 11, theoil separation chamber 36 is advantageous in providing theprolonged cylinder 41. - (7) As shown in Fig. 3, the
bottom 365 of theoil separation chamber 36 in thecylinder block 11 is located above thefirst intervening portion 115. Thebottom 375 of theoil reservoir chamber 37 is located above thesecond intervening portion 116, which is adjacent to thefirst intervening portion 115 in the circumferential direction of thecylinder block 11. - Therefore, the level of oil in the
oil separation chamber 36 is not raised due to the existence of theoil reservoir chamber 37. - The present invention may be embodied in the following forms.
- As shown in Fig. 6, the lower
oil separation chamber 361 and theoil reservoir chamber 37 in thecylinder block 11 may be divided from each other. The bottom of the loweroil separation chamber 361 and theoil reservoir chamber 37 may be connected to each other by acommunication passage 233 formed in thesuction valve plate 24 and a valve plate 23 (see Fig. 1A) of thecylinder block 11. - As shown in Fig. 6, the distal end of the
oil separating cylinder 41 may extend into the loweroil separation chamber 361. - The
oil reservoir chamber 37 of the first embodiment may be omitted, and a bottom portion of the loweroil separation chamber 361 may serve as an oil reservoir chamber. - The
oil reservoir chamber 37 and themuffler chamber 42 may be divided from each other by a member other than thegasket 34. - The
oil separating cylinder 41 may not be formed integrally with themuffler forming member 33. Thecylinder 41 may be attached to themuffler 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 thefront housing member 12. - A muffler forming member may be formed across the
cylinder block 11 and thefront housing member 12. - A muffler forming member may be formed across the
cylinder block 11 and therear housing member 13 may be provided. - Oil in the
oil reservoir chamber 37 may be directly supplied to thesuction chamber 131. - The
muffler chamber 42 may be formed between thedischarge passage 40 and theoil separation chamber 36, so that refrigerant flows to the externalrefrigerant circuit 28 from theoil 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).
Claims (7)
- An oil separation structure provided in a discharge pressure zone (132, 40, 36, 42) in a compressor (10),
wherein the compressor (10) includes:a piston (21) for compressing refrigerant containing oil;a housing (11) defining a cylinder bore (20) for accommodating the piston (21), the housing (11) having a circumferential surface (110); anda muffler forming member (33) coupled to the circumferential surface (110) of the housing (10), wherein the muffler forming member (33) defines a muffler chamber (42), wherein the refrigerant discharged from the cylinder bore (20) is sent to the muffler chamber (42),the oil separation structure in the compressor comprising; an oil separation chamber (36) separating the oil from the refrigerant,the oil separation structure being characterized in thatthe oil separation chamber (36) extends into both the muffler forming member (33) and the housing (11), the oil separation chamber (36) having a refrigerant inlet (403) through which the refrigerant flows into the oil separation chamber (36), and the refrigerant inlet (403) being formed in the muffler forming member (33). - The oil separation structure according to claim 1,
characterized in that the housing (11) defines an oil reservoir chamber (37), which communicates with the oil separation chamber (36), the oil reservoir chamber (37) located adjacent to the oil separation chamber (36) in a circumferential direction of the housing (11). - The oil separation structure according to claim 2,
characterized in that the compressor (10) further having a partition (34) functioning as a seal located between the housing (11) and the muffler forming member (33), the oil separation chamber (36) extending through the partition (34), the oil separation chamber (36) having a refrigerant outlet (411) through which the refrigerant flows out of the oil separation chamber (36) to communicate with the muffler chamber (42), the refrigerant outlet (411) being formed in the muffler forming member (33), and the partition (34) dividing the oil reservoir chamber (37) from the muffler chamber (42). - The oil separation structure according to claim 3,
characterized in that the compressor (10) has a discharge passage (40) through which the refrigerant discharged from the cylinder bore (20) flows, and
wherein the discharge passage (40) extends from the interior of the housing (11) to the refrigerant inlet (403) through the partition (34). - The oil separation structure according to claim 3 or 4,
characterized in that the muffler forming member (33) has an oil separating cylinder (41), which extends from the muffler forming member (33) into the oil separation chamber (36), the oil separating cylinder (41) having an opening (411) facing the housing (11), and the opening (411) functioning as the refrigerant outlet (411). - The oil separation structure according to any one of claims 2 to 5,
characterized in that the cylinder bore (20) is one of a plurality of cylinder bores (20A, 20B, 20C) defined by the housing (11), the cylinder bores (20A, 20B, 20C) include a first cylinder bore (20A), a second cylinder bore (20B), and a third cylinder bore (20C), the first and second cylinder bores (20A, 20B) being adjacent to each other in a circumferential direction of the housing (11), and the third cylinder bore (20C) being adjacent to at least one of the first and second cylinder bores (20A, 20B),
wherein the housing (11) includes: a first intervening portion (115) between the first cylinder bore (20A) and the second cylinder bore (20B); and a second intervening portion (116) between the third cylinder bore (20C) and the first cylinder bore (20A) or between the third cylinder bore (20C) and the second cylinder bore (20B), and
wherein the oil separation chamber (36) has a bottom (365) formed in the housing (11), the bottom (365) being located above the first intervening portion (115),
wherein the oil reservoir chamber (37) has a bottom (371) formed in the housing (11), the bottom (371) of the oil reservoir chamber (37) being located above the second intervening portion (116). - The oil separation structure according to claim 1,
characterized in that the compressor (10) has a discharge passage (40) through which the refrigerant discharged from the cylinder bore (20) flows, and
wherein the discharge passage (40) is connected to the oil separation chamber (36), and the oil separation chamber (36) is connected to the muffler chamber (42) such that the refrigerant in the discharge passage (40) flows into the oil separation chamber (36), and flows toward the muffler chamber (42) from the oil separation chamber (36).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006013690A JP4730107B2 (en) | 2006-01-23 | 2006-01-23 | Oil separation structure in compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1811174A2 true EP1811174A2 (en) | 2007-07-25 |
EP1811174A3 EP1811174A3 (en) | 2011-02-02 |
Family
ID=37946104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07100878A Withdrawn EP1811174A3 (en) | 2006-01-23 | 2007-01-22 | Oil separation structure in compressor |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070177991A1 (en) |
EP (1) | EP1811174A3 (en) |
JP (1) | JP4730107B2 (en) |
KR (1) | KR100796543B1 (en) |
CN (1) | CN100585179C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2549108A2 (en) | 2011-07-22 | 2013-01-23 | Volkswagen Aktiengesellschaft | Acoustic damping in a coolant circuit |
EP2055952A3 (en) * | 2007-11-05 | 2014-04-02 | Kabushiki Kaisha Toyota Jidoshokki | Variable displacement compressor |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5324893B2 (en) * | 2008-11-18 | 2013-10-23 | サンデン株式会社 | Compressor valve plate device |
KR102012372B1 (en) * | 2014-09-12 | 2019-08-20 | 한온시스템 주식회사 | Oil separator for scroll compressor |
KR20200086068A (en) * | 2019-01-08 | 2020-07-16 | 한온시스템 주식회사 | Compressor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0736690A2 (en) * | 1995-04-07 | 1996-10-09 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Cooling structure for compressor |
EP0926341A2 (en) * | 1997-12-24 | 1999-06-30 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Oil recovery device for compressors |
US5997257A (en) * | 1997-01-28 | 1999-12-07 | Zexel Corporation | Refrigerant compressor |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3085514B2 (en) * | 1995-06-08 | 2000-09-11 | 株式会社豊田自動織機製作所 | Compressor |
JPH09324758A (en) * | 1996-06-06 | 1997-12-16 | Toyota Autom Loom Works Ltd | Cam plate compressor |
JP3608299B2 (en) * | 1996-07-09 | 2005-01-05 | 株式会社豊田自動織機 | Double-head piston compressor |
JPH10196540A (en) * | 1997-01-10 | 1998-07-31 | Toyota Autom Loom Works Ltd | Compressor |
JP2004036583A (en) * | 2002-07-05 | 2004-02-05 | Denso Corp | Compressor |
-
2006
- 2006-01-23 JP JP2006013690A patent/JP4730107B2/en not_active Expired - Fee Related
- 2006-10-31 KR KR1020060106354A patent/KR100796543B1/en not_active IP Right Cessation
-
2007
- 2007-01-22 US US11/656,858 patent/US20070177991A1/en not_active Abandoned
- 2007-01-22 EP EP07100878A patent/EP1811174A3/en not_active Withdrawn
- 2007-01-23 CN CN200710138862A patent/CN100585179C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0736690A2 (en) * | 1995-04-07 | 1996-10-09 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Cooling structure for compressor |
US5997257A (en) * | 1997-01-28 | 1999-12-07 | Zexel Corporation | Refrigerant compressor |
EP0926341A2 (en) * | 1997-12-24 | 1999-06-30 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Oil recovery device for compressors |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2055952A3 (en) * | 2007-11-05 | 2014-04-02 | Kabushiki Kaisha Toyota Jidoshokki | Variable displacement compressor |
EP2549108A2 (en) | 2011-07-22 | 2013-01-23 | Volkswagen Aktiengesellschaft | Acoustic damping in a coolant circuit |
DE102011108372A1 (en) | 2011-07-22 | 2013-01-24 | Volkswagen Aktiengesellschaft | Soundproofing in a refrigerant circuit |
US8434586B2 (en) | 2011-07-22 | 2013-05-07 | Volkswagen Aktiengesellschaft | Sound insulation in a refrigerant circuit |
Also Published As
Publication number | Publication date |
---|---|
JP2007192200A (en) | 2007-08-02 |
JP4730107B2 (en) | 2011-07-20 |
CN100585179C (en) | 2010-01-27 |
US20070177991A1 (en) | 2007-08-02 |
KR20070077432A (en) | 2007-07-26 |
EP1811174A3 (en) | 2011-02-02 |
CN101092951A (en) | 2007-12-26 |
KR100796543B1 (en) | 2008-01-21 |
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