WO2003087577A1 - Compresseur du type a plaque oscillante - Google Patents

Compresseur du type a plaque oscillante Download PDF

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Publication number
WO2003087577A1
WO2003087577A1 PCT/JP2003/003620 JP0303620W WO03087577A1 WO 2003087577 A1 WO2003087577 A1 WO 2003087577A1 JP 0303620 W JP0303620 W JP 0303620W WO 03087577 A1 WO03087577 A1 WO 03087577A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
mixed gas
cylinder block
swash plate
housing
Prior art date
Application number
PCT/JP2003/003620
Other languages
English (en)
Japanese (ja)
Inventor
Shigeki Kato
Tsuneo Yano
Original Assignee
Kabushiki Kaisha Unicla J
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 Kabushiki Kaisha Unicla J filed Critical Kabushiki Kaisha Unicla J
Publication of WO2003087577A1 publication Critical patent/WO2003087577A1/fr

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
    • F04B27/10—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
    • F04B27/1045—Cylinders
    • 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
    • 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
    • F04B27/12—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 having plural sets of cylinders or pistons

Definitions

  • the present invention relates to a swash plate compressor used for an air conditioning system for a vehicle.
  • a shaft rotatably supported by a cylinder block in its housing receives the rotational power of the onboard engine. It is driven to rotate. The rotational movement of the shaft is translated into reciprocating movement of the piston around the shaft and in a plurality of cylinders parallel to the shaft.
  • a mixed gas of a low-temperature low-pressure refrigerant and a lubricating oil is sucked into the cylinder alternately from both ends of each cylinder, compressed, and then discharged in a high-temperature high-pressure state.
  • the mixed gas reaches the cylinder from an introduction hole provided at an upper portion of the housing, through a passage provided at the top of the housing, and two champers provided at both ends of the housing. .
  • a cavity extending from the cylinder block to each piston is provided to convert the rotational motion of the shaft into the reciprocating motion of the piston, and a circular swash plate is received in the cavity.
  • a swash plate fixed to the shaft and obliquely crossing the shaft is in contact with each piston via a bearing member disposed in the cavity.
  • the amount of lubricating oil supplied between the swash plate and the bearing member is not sufficient, and therefore, the seizure between the swash plate and the bearing member is short after starting. Occasionally, operation of the swash plate compressor stopped.
  • This supply route is composed of a screw hole provided in the shaft and opened at one end thereof, and a plurality of holes communicating with the screw hole and opening toward the thrust bearing of the shaft. No. 1) .
  • the mixed gas flows into the screw hole opened at one end of the shaft, and while flowing through the screw hole, the lubricating oil component attached to the screw thread and turned into a liquid state is removed. Through the hole, it is guided and supplied between the swash plate and the bearing portion.
  • the supply of lubricating oil was not sufficient, and seizure sometimes occurred. Disclosure of the invention
  • the present invention provides a housing, a cylinder block housed in the housing and extending in the axial direction of the housing, a shaft rotatably supported by the cylinder block and extending in the axial direction of the cylinder block, A plurality of cylinders spaced apart from each other around the shaft in the cylinder block and a piston disposed in each cylinder; and a swash plate fixed to the shaft and rotatable with the shaft.
  • a cavity provided in both the cylinder block and each of the pistons; an introduction hole for the mixed gas of the refrigerant and the lubricating oil provided in the housing; and a communication hole provided in the housing for the introduction hole for the mixed gas.
  • a space for receiving the mixed gas, and two chambers provided in the housing A swash plate type compressor provided with two chambers for receiving the mixed gas supplied from both ends of the cylinder block, further comprising at least one opening provided in the cylinder block and communicating with the mixed gas receiving space and the cavity. And a plurality of passages provided in the cylinder dock and communicating with the cavity and each of the champers.
  • the mixed gas passages are arranged between the shaft and the biston at intervals around the shaft.
  • the operation of the swash plate type compressor is performed through the introduction hole of the housing.
  • the mixed gas introduced into the receiving space therein is different from the conventional one, is led to the cavity receiving the swash plate through the opening provided in the cylinder block, and is provided in the cylinder block from the cavity. Via a passage, it is fed into two chambers located at both ends of the cylinder.
  • the mixed gas flows through the cavity, and further the expansion of the mixed gas accompanying the inflow into the cavity reduces the mutual coupling force between the refrigerant and the lubricating oil component in the mixed gas.
  • a large amount of the lubricating oil component in the mixed gas adheres to the support bearing members of the swash plate in the cavity exposed to the shaft, and further to the lubrication of these bearing members.
  • the mixed gas comes into contact with the peripheral surface of the shaft, and the lubricating oil component in the mixed gas adheres.
  • the attached lubricating oil component forms an oil film between the seal member disposed around the shaft and the shaft in order to prevent leakage of the mixed gas from the champer, and improves the sealing property of the seal member. It acts to enhance.
  • FIG. 1 is a longitudinal sectional view of a swash plate type compressor according to the present invention.
  • FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • a swash plate type compressor mounted on an automobile is indicated generally by reference numeral 10.
  • the swash plate compressor 10 includes a housing 12, a cylinder block 14 accommodated in an internal space defined by the housing 12, and a shaft 16 rotatably supported by the cylinder block 14.
  • the swash plate 18 fixed to the shaft 16 and the cylinder block T JP03 / 03620 A plurality of (five in the illustrated example) cylinders provided on the tool 14 and extending in the axial direction of the cylinder 2
  • the swash plate type compressor 10 is driven by receiving the rotational power of a vehicle engine (not shown).
  • the turning power is transmitted to the shaft 16 via a belt (not shown), and the shaft rotates. To transmit the rotational power to shaft 16 and release it
  • a clutch (not shown) is attached to the tip of the shaft 16.
  • the housing 12 defines a housing space for the cylinder block 14 and has a body 24 having a cylindrical inner surface as a whole, and a shaft 1 connected to one end of the body 24 in the axial direction and protruding from the one end.
  • 6 comprises a reduced-diameter tube portion 26 surrounding the distal end portion, and a cap 28 fixed to and covering the open end (the other end) of the main body 24.
  • the housing main body 24 has an introduction hole 30 for the mixed gas, and has a space 32 above it in a space connected to the accommodation space of the cylinder block 14.
  • the introduction hole 30 and the space 32 are located almost in the middle between both ends of the main body 24, are located immediately above the cylinder block 14, and communicate with each other. Therefore, the mixed gas is received in the space 32 through the introduction hole 30.
  • the mixed gas received in the space 32 passes through the opening 70, the cavities 58, 60, the passage 72, and the champers 38, 42. And supplied into each cylinder 20.
  • the cylinder block 14 is composed of a pair of block portions butted against each other, but is shown as a single unit for the sake of convenience in illustration.
  • the plurality of cylinders 20 provided in the cylinder block 14 are arranged around the shaft 16. 03 03620, that is, they are spaced from one another around the axis of the cylinder block 14. Each cylinder 20 is opened at both ends of the cylinder block 14, and both ends of the cylinder 20, that is, both ends of the cylinder block 14 are respectively connected to the housing cap 28 via a pair of valve plates 34, 36. And one end of its body 24.
  • the inner chambers 38, 42 of the chambers can receive the low-temperature, low-pressure mixed gas supplied into the cylinder 20.
  • the outer chambers 40 and 44 can receive a high-temperature and high-pressure mixed gas discharged outside the cylinder 20.
  • both the supply side chambers 38, 42 and the discharge side chambers 38, 42 are denoted by a symbol L meaning low pressure and a symbol H meaning high pressure, respectively.
  • the two valve plates 34, 36 have two holes 46, 48, which allow the supply of mixed gas from the low pressure side chamber (L) to each cylinder, and the high pressure side chamber (H) from each cylinder. There are provided two holes 50 and 52 that allow the mixed gas discharged to move to the outside. Each hole is covered with a suction plate (not shown), which is a check valve for controlling the movement of the mixed gas, attached to each pulp plate.
  • the two chambers 40, 44 on the high pressure side (H) at both ends of the housing body 24 pass through holes 54 passing through the cylinder block 14 in the axial direction thereof in the vicinity of the shaft 16. They communicate with each other via a tube (not shown). Therefore, the mixed gas discharged to both high-pressure-side champers is discharged out of the housing 12 from a discharge port 56 provided in the cap 28 and connected to the chamber 44 on the cap side.
  • the cylinder block 14 is provided with a hollow portion 58 connected to each cylinder 20.
  • the hollow portion 58 is located substantially at the center of each cylinder 20 in the axial direction.
  • a hollow portion 60 is provided in each piston 22.
  • the cavities 58 and each cavity 60 communicate with each other.
  • the cavity 60 of each piston is maintained in communication with the cavity 58 of the cylinder block even during the reciprocating movement. Therefore, cavity 5 8 And each cavity 60 form one cavity.
  • the shaft 16 is supported by a pair of thrust bearings 62 arranged on both sides of the swash plate 18 and a pair of radial bearings 64 arranged on both ends of the shaft 16. '
  • a swash plate 18 that converts the rotational motion of the shaft 16 into a reciprocating motion of each piston 22 is received in the cavities 58, 60 and is inclined with respect to the shaft 16. Therefore, when the swash plate 18 in the cavity rotates together with the shaft 16, each biston 22 receives an axial force from the swash plate 18.
  • a disk-shaped shoe 66 which is a bearing member in contact with each surface of the swash plate 18, and a wall of a piston 22 defining the shoe 66 and the hollow portion 60 are rotated. Balls 6 and 8 held as possible are arranged. The swash plate 18 is in contact with each of the bistons 22 through these shoes 66 and Benore 68.
  • the cylinder block 14 is provided with two openings 70 and a plurality (10 in the illustrated example) of passages 72 for the low-pressure and low-temperature mixed gas.
  • the two openings 70 are provided on both sides of the cylinder 20 located at the uppermost position in FIG. 2, and communicate with the hollow portion 58 of the cylinder block. Therefore, both openings 70 are also in communication with the cavity 60 of each piston.
  • the number of openings 70 may be one instead of the illustrated example.
  • the shape of the opening 70 shown in the figure is a horizontally long oval, but is not limited to this, and it is optional to adopt another shape. .
  • the plurality of passages 72 are arranged at intervals around the shaft 16 and communicate with the cavity 58.
  • Half (5) of the passages 7 2 extend from the cavity 5 8 force to the chamber 38 on one low pressure side, and the other half (5) extend from the cavity 58 to the other low pressure side.
  • the champs are growing towards 42.
  • These passages 72 further communicate with the respective champers 38, 42 via a plurality (five) of holes 74, 76 provided in the respective valve plates 34, 36.
  • the mixed gas introduced into the receiving space 32 through the introduction hole 30 in the upper part of the housing flows into the cavity through the two openings 70 communicating with the space 32, and from the cavity, the passages 7 2 After that, they are sent to the respective champers 38, 42.
  • the mixed gas expands when flowing into the cavity, whereby the mutual bonding force between the refrigerant and the lubricating oil component in the mixed gas decreases. Therefore, the lubricating oil component is easily separated from the refrigerant, and a larger amount of the lubricating oil component adheres to the bearing member, the swash plate, the bearing, and the like. As a result, the bearing members 66, 68, the swash plate 18 and the bearings 62, 64 are sufficiently lubricated, resulting in insufficient lubrication of the swash plate type compressor 10 and the accompanying swash plate 18 and shroud 6 6. Is eliminated.
  • the passage 72 is disposed between the shaft 16 and the piston 22 and is close to the piston 22, the reciprocating motion of the low-temperature mixed gas 1 flowing through the passage 72 causes the passage 72. It contributes to cooling of the piston 22 which is in a high temperature state.
  • the lubricating oil component in the mixed gas in the cavity adheres to the surface of the shaft 16, and an oil film is formed on the surface of the shaft 16.
  • a shaft 16 surrounded by a sealing member 78 such as a mechanical seal or a lip seal provided to prevent leakage of the mixed gas from the reduced-diameter tube portion 26 of the housing communicating with the champer 38
  • the oil generated around the shaft S forms an oil seal between the shaft 16 and the sealing member 78 around the shaft 16, thereby further improving the sealing performance of the sealing member 78.
  • Reference numerals 80 and 82 respectively denote a snap ring and an O-ring which are disposed on both sides of the seal member 78 and are arranged around the shaft 16 to fix the seal member to the housing 12. Show.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Abstract

L'invention concerne un compresseur (10) du type à plaque oscillante, comprenant un logement (12), un bloc cylindre (14) dans le logement, un arbre (16) monté pivotant rotatif sur le bloc cylindre, plusieurs cylindres (20) installés dans le bloc cylindre et des pistons (22) disposés dans les cylindres, des espaces vides (58, 60) pratiqués à la fois dans les pistons et dans le bloc cylindre afin d'y loger une plaque oscillante (18) fixée à l'arbre, un orifice d'entrée de gaz mélangé (30) pratiqué dans le logement, un espace d'arrivée de gaz mélangé (32) communiquant avec l'orifice d'entrée, deux chambres (38, 42), au moins un orifice (70) pratiqué dans le bloc cylindre et communicant avec l'espace d'arrivée (32) et les espaces vides (58, 60) et plusieurs passages (72) communicant avec les espaces vides et les chambres (38, 42).
PCT/JP2003/003620 2002-04-18 2003-03-25 Compresseur du type a plaque oscillante WO2003087577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-115742 2002-04-18
JP2002115742A JP2003314441A (ja) 2002-04-18 2002-04-18 斜板式圧縮機

Publications (1)

Publication Number Publication Date
WO2003087577A1 true WO2003087577A1 (fr) 2003-10-23

Family

ID=29243434

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/003620 WO2003087577A1 (fr) 2002-04-18 2003-03-25 Compresseur du type a plaque oscillante

Country Status (3)

Country Link
JP (1) JP2003314441A (fr)
TW (1) TW574473B (fr)
WO (1) WO2003087577A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548280A1 (fr) * 2003-12-23 2005-06-29 META Motoren- und Energie-Technik Gmbh Compresseur à piston

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101037177B1 (ko) * 2007-06-01 2011-05-26 한라공조주식회사 사판식 압축기
KR102027178B1 (ko) * 2014-04-11 2019-11-04 한온시스템 주식회사 양두 사판식 압축기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925505A (fr) * 1972-05-10 1974-03-07
JPS59145378A (ja) * 1983-02-07 1984-08-20 Toyoda Autom Loom Works Ltd 斜板式圧縮機における両頭式ピストンの連結構造
JPS63166685U (fr) * 1987-04-20 1988-10-31
JPS63174579U (fr) * 1987-04-17 1988-11-11
JPH02147876U (fr) * 1989-05-18 1990-12-14

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925505A (fr) * 1972-05-10 1974-03-07
JPS59145378A (ja) * 1983-02-07 1984-08-20 Toyoda Autom Loom Works Ltd 斜板式圧縮機における両頭式ピストンの連結構造
JPS63174579U (fr) * 1987-04-17 1988-11-11
JPS63166685U (fr) * 1987-04-20 1988-10-31
JPH02147876U (fr) * 1989-05-18 1990-12-14

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548280A1 (fr) * 2003-12-23 2005-06-29 META Motoren- und Energie-Technik Gmbh Compresseur à piston
US7780425B2 (en) 2003-12-23 2010-08-24 Meta Motoren-Und Energie-Technik Gmbh Piston compressor

Also Published As

Publication number Publication date
TW574473B (en) 2004-02-01
TW200305685A (en) 2003-11-01
JP2003314441A (ja) 2003-11-06

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