WO2003085261A1 - Compresseur a cylindree variable - Google Patents
Compresseur a cylindree variable Download PDFInfo
- Publication number
- WO2003085261A1 WO2003085261A1 PCT/JP2003/004442 JP0304442W WO03085261A1 WO 2003085261 A1 WO2003085261 A1 WO 2003085261A1 JP 0304442 W JP0304442 W JP 0304442W WO 03085261 A1 WO03085261 A1 WO 03085261A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- passage
- variable displacement
- crank chamber
- displacement compressor
- Prior art date
Links
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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
-
- 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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/1809—Controlled pressure
- F04B2027/1813—Crankcase pressure
-
- 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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/1822—Valve-controlled fluid connection
- F04B2027/1827—Valve-controlled fluid connection between crankcase and discharge chamber
-
- 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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/184—Valve controlling parameter
- F04B2027/1854—External parameters
-
- 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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/184—Valve controlling parameter
- F04B2027/1859—Suction pressure
-
- 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
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
- F04B2027/1886—Open (not controlling) fluid passage
- F04B2027/1895—Open (not controlling) fluid passage between crankcase and suction chamber
Definitions
- the present invention relates to a variable displacement compressor used for an air conditioner for a vehicle and the like, and particularly to a variable displacement compressor capable of highly reliable variable displacement control without foreign matter stagnating in a passage provided for capacity control.
- the present invention relates to a variable displacement compressor that can simplify the above.
- variable displacement compressor 50 As a variable displacement compressor provided in a refrigeration circuit of a vehicle air conditioner or the like, for example, the one disclosed in Japanese Patent Application Laid-Open No. 2000-180172 is known.
- the variable displacement compressor 50 includes a cylinder block 51 having a plurality of cylinder bores 51a and a front housing 52 provided at one end of a cylinder block 51.
- a rear housing 53 provided on the cylinder block 51 via a valve plate device 54 is provided.
- a compressor main shaft 56 as a drive shaft is provided traversing the crank chamber 55 formed by the cylinder block 51 and the front housing 52, and a swash plate 5 is provided around the center thereof. 7 are located.
- the swash plate 57 is connected to a rotor 58 fixed to the compressor main shaft 56 via a connecting portion 59.c
- One end of the compressor main shaft 56 has a boss protruding outside the front housing 52.
- the electromagnetic clutch 70 extends through the inside of the portion 52 a and extends to the outside, and is provided around the boss portion 52 a via a bearing 60.
- the electromagnetic clutch 70 includes a rotor 71 provided around the boss 52 a, an electromagnet device 72 housed in the rotor, and a clutch plate 73 provided on one outer end surface of the rotor. ing.
- One end of the compressor main shaft 56 is connected to a clutch plate 73 via a fixing member 74 such as a bolt.
- a seal member 52b is inserted between the compressor main shaft 56 and the boss portion 52a to shut off the inside and the outside.
- the other end of the compressor main shaft 56 is located in the cylinder block 51, and the other end is supported by a support member 78.
- Reference numerals 75, 0.76 and 77 indicate bearings.
- a piston 62 is slidably inserted into the cylinder bore 51a, and a recess 62a at one end inside the piston 62 accommodates the periphery of the outer periphery of the swash plate 57.
- the piston 62 and the swash plate 57 are linked to each other via a pair of shoes 63. The rotation of the swash plate 57 is converted to the reciprocation of the piston 62.
- a suction chamber 65 and a discharge chamber 64 are partitioned and formed.
- the suction chamber 65 is a cylinder bore 51a and a suction port provided in the valve plate device 54.
- the discharge chamber 64 is connected to the cylinder bore 51a with the discharge port 82 provided in the valve plate device 54 and a discharge valve not shown. Communication is possible via
- the suction chamber 65 communicates with the crank chamber 55 through an opening 83 (fixed orifice) through an air chamber 84 formed in the shaft end extension of the compressor main shaft 56.
- a mechanism of the displacement control valve 10 is provided in a recess in the rear wall of the rear housing 53 of the variable displacement compressor 50.
- the capacity control valve 10 is provided in a housing 53 a of a control mechanism formed by recessing one end in the rear housing 53.
- the capacity control valve 10 includes a valve casing 1 having a valve casing body 1a and a cap-shaped lid member 1b provided at one end thereof.
- a bellows 2 as pressure sensing means is disposed in a pressure sensing space at one end in the valve casing 1.
- the bellows 2 includes a bellows body 2, a shaft member 2 d projecting inward from both ends of the bellows body 2 b, and having a distal end provided at a distance from the bellows body 2 b.
- the bellows body 2b includes an inner spring 2a disposed inside, and a support member 2c provided continuously to one end of the shaft member 2d of the bellows body 2b. Vacuumed.
- a spring 3 is arranged around the support member 2c so as to press the bellows body 2b downward in the figure via the shaft member 2d.
- the bellows 2 functions as pressure sensing means for receiving the pressure of the suction chamber 65.
- a rod guide hole 1c is provided in the casing body 1a so as to penetrate in the axial direction of the capacity control valve.
- the rod guide hole 1c is provided with a pressure-sensitive rod 4 supported at one end of the support member 2c of the bellows 2 so as to be in contact with one end of the support member 2c and passed through the valve casing body 1a.
- the other end of the pressure-sensitive rod 4 is in contact with a valve element 5 a formed as a large-diameter part at one end of a valve mechanism 5. Since the bellows 2 as the pressure sensing means and the pressure sensing rod 4 are operatively connected, the valve body 5a is connected between the discharge chamber 64 and the crank chamber 55 according to the expansion and contraction of the bellows 2.
- a fixed member having a rod guide hole 7a is provided so as to be in contact with the upper end of the casing body 1a and slidably supports the valve shaft 5b of the valve body 5a.
- a constant iron core 7 is arranged, and a valve chamber 6 is formed by the casing body 1 a and one end of the fixed iron core 7.
- the valve chamber 6 communicates with the discharge chamber 6 via the communication passage 68, the space 14 and the communication passage 1e. Further, the other end of the fixed iron core 7, a plunger 9 is provided so as to cover the plunger 9, including the fixed iron core 7, by the c fixed iron core 7 and tube 8 the tube 8 is provided One room of one plunger is defined.
- a communication passage 13 is provided so as to connect the plunger chamber 11 and the suction chamber 65 with the communication passage 67, the hole 1 f, and the pressure-sensitive space 15.
- a magnetic field is applied to the outer periphery of the tube 8 by applying an electromagnetic force to the gap between the plunger 9 and the fixed iron core 7 and applying the electromagnetic force to the valve body 5a via the valve shaft 5b (solenoid rod).
- An electromagnetic coil composed of solenoids 12 as means is provided.
- the discharge capacity is changed by adjusting the opening degree of the control passage connecting the discharge pressure area and the control pressure area (that is, the crank chamber pressure area). Is done.
- the discharge pressure supply passage from the discharge chamber 64 to the crank chamber 55 is composed of communication passages 68, le, lg, 66, and the crank chamber 55
- the pressure release passage from the compressor to the suction chamber 65 is constituted by a gap between the compressor main shaft 56 and the bearing 77, an air chamber 84, and a fixed orifice portion 83.
- the flow of the supply gas from the discharge chamber 64 flows out of the discharge chamber 64, the capacity control valve 10, the crank chamber 55, the air chamber 84, and the fixed orifice section 8. 3 ⁇
- the suction chamber 65 always flows in one direction.
- variable displacement compressor 50 the discharge chamber 64 and the crank chamber 55 are provided. Since two communication passages are required: a discharge pressure supply passage that leads to the pressure chamber and a pressure relief passage from the crank chamber 55 to the suction chamber 65, the processing power of the cylinder block 51 becomes complicated. is there.
- an object of the present invention is to provide a variable capacity variable control that can perform highly reliable variable capacity control without foreign matter stagnating in a passage provided for capacity control and that can simplify processing, particularly processing of a cylinder block. It is to provide a structure of a compressor.
- a variable displacement compressor includes a discharge chamber, a suction chamber, and a crank chamber, and a displacement control valve in a discharge pressure supply passage communicable from the discharge chamber to the crank chamber.
- a fixed orifice is provided in the middle of a pressure relief passage communicating from the crank chamber to the suction chamber, and the capacity control valve is opened and closed to adjust the pressure in the crank chamber and control the piston stroke.
- a part of the discharge pressure supply passage and a part of the pressure relief passage are formed as a common passage communicating with the end of the crank chamber.
- a part of the common passage is formed as a passage passing through a glaze of a compressor main shaft.
- a part of the common passage may include an air chamber formed in a shaft end extension of the compressor main shaft.
- the fixed orifice portion can be formed inside the displacement control valve.
- a common passage communicating with the section Since a common passage communicating with the section is formed, a bidirectional flow is generated in the common passage along with the capacity control operation.
- the common passage is formed by a gap between the compressor main shaft and the bearing, an air chamber formed in the extension of the shaft end of the compressor main shaft and accommodating the shaft support member, and the like. Then, a two-way flow occurs.
- the generation of bidirectional flow makes it difficult for foreign substances in the gas to stagnate along these passages, even in low-velocity regions.
- the compressor's reliability and durability are greatly improved.
- the discharge pressure supply passage and the pressure relief passage that communicate with the end of the crank chamber are formed as a common passage, the number of additional portions of the passage to be formed in the cylinder block is reduced, and machining is simplified. Is done. The simplification of processing can facilitate processing and reduce costs.
- the passage leading to the fixed orifice portion does not have to be formed in the cylinder block, so that the processing of the cylinder block can be further simplified, and furthermore, It will be possible to reduce costs.
- FIG. 1 is a longitudinal sectional view of a displacement control valve of a variable displacement compressor according to one embodiment of the present invention.
- FIG. 2 is an enlarged partial longitudinal sectional view of the variable displacement compressor of FIG.
- FIG. 3 is a longitudinal sectional view of a conventional variable displacement compressor.
- FIG. 4 is an enlarged partial longitudinal sectional view of the variable displacement compressor of FIG.
- the basic configuration other than the discharge pressure supply passage and the pressure relief passage of the variable displacement compressor is substantially the same as the configuration shown in FIGS. 3 and 4, for example.
- 1 and 2 show a variable displacement compressor according to one embodiment of the present invention.
- the structure of the discharge pressure supply passage 101 and the structure of the pressure release passage 102 are different from the structure shown in FIGS. 3 and 4, and the structure of the other parts is substantially the same as that of FIGS. Since the structure is the same as that shown in FIG. 4, the description of the same parts will be omitted by retaining the same reference numerals as in FIGS.
- a discharge pressure supply passage 101 is formed from the discharge chamber 64 to the crank chamber 55 so that both can communicate with each other.
- a capacity control valve 10 is arranged in the middle of the discharge pressure supply passage 101 of the first embodiment.
- a pressure relief passage 102 is formed from the crank chamber 55 to the suction chamber 65 to communicate the two. I have.
- the discharge pressure supply passage 101 is a communication passage 68 communicating with the space 14 from the discharge chamber 64, a space 14, a communication passage 1e, a valve chamber 6, an upper portion of the through hole 1c, and a communication passage 1d.
- a communication passage 103 communicating from the space 1 g to the air chamber 84 formed in the shaft end extension of the compressor main shaft 56 from the space 1 g, and a shaft support member 78 installed from the air chamber 84
- a passage 104 communicating with the crank chamber 55 through a gap between the main shaft 56 of the compressor and the bearing 77.
- the pressure relief passage 102 is provided with the passage 104 communicating with the air chamber 84 from the crank chamber 55 through the space between the compressor main shaft 56 and the bearing 77 and the shaft support member 78, and the air chamber.
- the above-mentioned communication passage 103 communicating from 8 4 to the space 1 g, the fixed orifice portion 105 communicating from the space 1 g to the pressure-sensitive space 15, the hole 1 ⁇ , the housing 5 3 a inner space, And a communication passage 67 communicating therewith to the suction chamber 65.
- the space 1 g in the discharge pressure supply passage 101, the communication passage 103, the air chamber 84, the passage 104, and the passage 104 in the pressure relief passage 102, the air chamber 84, the communication passage 103, and the space 1g are configured as a common passage that can be shared.
- the fixed orifice portion 105 is formed in the displacement control valve 10.
- variable capacity compressor 100 configured as described above, only when the valve element 5a moves in the opening direction, it is momentarily transiently passed through the discharge pressure supply passage 101 from the discharge chamber 64 side. Gas flow to the crank chamber 55 side occurs. Normally, when the valve element 5a is not moved in the opening direction, gas flows from the crank chamber 55 side to the suction chamber 65 side through the pressure release passage 102. In the case of the common passage portion, the directions of these gas flows are opposite to each other. That is, with the capacity control operation of the capacity control valve 10, a bidirectional gas flow is generated in the common passage portion. The bidirectional flow of the gas makes it difficult for foreign matter to stagnate in the common passage. Therefore, even if the gas flow rate is low, the stagnation of foreign matter in this portion is appropriately prevented.
- the discharge pressure supply passage 101 and the pressure relief passage 102 have a common passage portion, and the common passage portion is formed particularly in the cylinder block 51. As compared with the case where two passages are respectively formed in the cylinder block 51, machining of the passage of the cylinder block 51 is greatly simplified.
- the end of the air chamber 84 had to be processed into a complicated shape in order to communicate from the air chamber 84 to the fixed orifice section 83.
- the shape of the chamber 8 can be simpler, and the processing of the cylinder opening 51 can be further simplified.
- variable displacement compressor suitable for use in a vehicle air conditioner or the like.
- a variable capacity compressor having high reliability and durability without foreign matter stagnating in a passage provided for capacity control. It is possible to provide a variable displacement compressor that can be controlled and simplifies machining c
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03745955A EP1498606B1 (en) | 2002-04-09 | 2003-04-08 | Variable displacement compressor |
AU2003236320A AU2003236320A1 (en) | 2002-04-09 | 2003-04-08 | Variable displacement compressor |
DE60314121T DE60314121T2 (de) | 2002-04-09 | 2003-04-08 | Kompressor mit variabler verdrängung |
US10/510,340 US7857601B2 (en) | 2002-04-09 | 2003-04-08 | Variable displacement compressor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-106460 | 2002-04-09 | ||
JP2002106460A JP4118587B2 (ja) | 2002-04-09 | 2002-04-09 | 可変容量圧縮機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003085261A1 true WO2003085261A1 (fr) | 2003-10-16 |
Family
ID=28786427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/004442 WO2003085261A1 (fr) | 2002-04-09 | 2003-04-08 | Compresseur a cylindree variable |
Country Status (7)
Country | Link |
---|---|
US (1) | US7857601B2 (ja) |
EP (1) | EP1498606B1 (ja) |
JP (1) | JP4118587B2 (ja) |
CN (1) | CN100436814C (ja) |
AU (1) | AU2003236320A1 (ja) |
DE (1) | DE60314121T2 (ja) |
WO (1) | WO2003085261A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4626808B2 (ja) * | 2005-04-26 | 2011-02-09 | 株式会社豊田自動織機 | 可変容量型クラッチレス圧縮機用の容量制御弁 |
JP5140402B2 (ja) * | 2007-12-06 | 2013-02-06 | カルソニックカンセイ株式会社 | 斜板式コンプレッサ |
JP4924464B2 (ja) * | 2008-02-05 | 2012-04-25 | 株式会社豊田自動織機 | 斜板式圧縮機 |
TWI405084B (zh) * | 2009-10-22 | 2013-08-11 | Giga Byte Tech Co Ltd | 多媒體系統 |
JP5871281B2 (ja) * | 2010-12-09 | 2016-03-01 | イーグル工業株式会社 | 容量制御弁 |
JP5999622B2 (ja) * | 2012-02-06 | 2016-09-28 | サンデンホールディングス株式会社 | 可変容量圧縮機 |
WO2018139476A1 (ja) * | 2017-01-26 | 2018-08-02 | イーグル工業株式会社 | 容量制御弁 |
JP2021021330A (ja) * | 2019-07-24 | 2021-02-18 | サンデン・オートモーティブコンポーネント株式会社 | 可変容量圧縮機の制御弁 |
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KR100340606B1 (ko) * | 1999-09-10 | 2002-06-15 | 이시카와 타다시 | 용량 가변형 압축기의 제어밸브 |
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2002
- 2002-04-09 JP JP2002106460A patent/JP4118587B2/ja not_active Expired - Fee Related
-
2003
- 2003-04-08 CN CNB038077825A patent/CN100436814C/zh not_active Expired - Lifetime
- 2003-04-08 DE DE60314121T patent/DE60314121T2/de not_active Expired - Lifetime
- 2003-04-08 EP EP03745955A patent/EP1498606B1/en not_active Expired - Lifetime
- 2003-04-08 US US10/510,340 patent/US7857601B2/en not_active Expired - Fee Related
- 2003-04-08 WO PCT/JP2003/004442 patent/WO2003085261A1/ja active IP Right Grant
- 2003-04-08 AU AU2003236320A patent/AU2003236320A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
JP2003301771A (ja) | 2003-10-24 |
US20050214133A1 (en) | 2005-09-29 |
EP1498606A1 (en) | 2005-01-19 |
JP4118587B2 (ja) | 2008-07-16 |
US7857601B2 (en) | 2010-12-28 |
CN100436814C (zh) | 2008-11-26 |
EP1498606B1 (en) | 2007-05-30 |
AU2003236320A1 (en) | 2003-10-20 |
DE60314121D1 (de) | 2007-07-12 |
EP1498606A4 (en) | 2005-04-20 |
DE60314121T2 (de) | 2007-09-20 |
CN1646807A (zh) | 2005-07-27 |
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