EP1775472A1 - Structure étanche d'un compresseur - Google Patents

Structure étanche d'un compresseur Download PDF

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Publication number
EP1775472A1
EP1775472A1 EP05719891A EP05719891A EP1775472A1 EP 1775472 A1 EP1775472 A1 EP 1775472A1 EP 05719891 A EP05719891 A EP 05719891A EP 05719891 A EP05719891 A EP 05719891A EP 1775472 A1 EP1775472 A1 EP 1775472A1
Authority
EP
European Patent Office
Prior art keywords
valve
valve plate
seal member
intake
printed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05719891A
Other languages
German (de)
English (en)
Other versions
EP1775472A4 (fr
Inventor
Hiroshi Valeo Thermal System Japan Corp. KANAI
Shunichi Valeo Thermal System Japan Corp FURUYA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Thermal Systems Japan Corp
Original Assignee
Valeo Thermal Systems Japan Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Thermal Systems Japan Corp filed Critical Valeo Thermal Systems Japan Corp
Publication of EP1775472A1 publication Critical patent/EP1775472A1/fr
Publication of EP1775472A4 publication Critical patent/EP1775472A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates
    • 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
    • F04B27/1009—Distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1081—Casings, housings

Definitions

  • the present invention relates to a seal structure that may be adopted in a compressor used in an automotive air-conditioning system or the like.
  • an intake valve 102 and a gasket 103 are held between a cylinder block 100 having formed therein a plurality of bores 104 and a valve plate 101 and the valve plate 101 and the intake valve 102 are set in tight contact with each other during the assembly process, as shown in FIG. 11. Since the valve plate 101 and the intake valve 102 are each normally constituted of metal, the seal between the valve plate 101 and the intake valve 102 is achieved by placing the metals constituting these members in tight contact with each other.
  • an outlet valve 111 and a gasket 112 are held between the valve plate 101 and a rear head 110 having defined therein intake chambers 113 and an outlet chamber 114 and the valve plate 101 is set in tight contact with the outlet valve 111 during the assembly process, as shown in FIG. 12.
  • the seal between the intake valve 102 and the valve plate 101 the seal between the valve plate 101 and the outlet valve 111, each normally constituted of metal, is achieved by placing the metals constituting these members in tight contact with each other as well.
  • Patent reference literature 1 Japanese Unexamined Patent Publication No. H10-96473
  • the seal between the valve plate 101 in the intake valve 102 is through tight metal-to-metal contact as described above and the level of the seal thus achieved tends to be insufficient, particularly between the bores 104, and coolant leakage occurs readily as indicated by the arrows in FIG. 11.
  • the level of seal between the valve plate 101 and the outlet valve 111 also tends to be insufficient, particularly between the intake chambers 113 and the outlet chamber 114, allowing the coolant to leak readily, as indicated by the arrows in FIG. 12.
  • Such a leakage phenomenon is more pronounced in a compressor used in a refrigeration cycle in which a high-pressure coolant such as CO2 is used.
  • an object of the present invention is to improve sealability in a compressor without increasing the number of required parts and the number of assembly steps or increasing the dimensions of the compressor.
  • a compressor that includes an intake valve and a valve plate disposed adjacent to each other, characterized in that a seal member is formed through printing as an integrated part at least at either of the contact surfaces of the intake valve and the valve plate (claim 1).
  • a lead portion of the intake valve be formed so that the lead portion in a free state leans toward the valve plate by an extent greater than the thickness of the seal member printed at the intake valve and/or the valve plate (claim 2).
  • seal member is printed at the intake valve in the compressor according to claim 1 or claim 2
  • the seal member may be printed on both surfaces of the intake valve (claim 3).
  • seal member is printed at the intake valve in the compressor according to any of claims 1 through 3, the seal member be not printed at a lead portion of the intake valve (claim 4).
  • a compressor that includes an outlet valve and a valve plate disposed adjacent to each other, characterized in that a seal member is formed through printing as an integrated part at least at either of contact surfaces of the outlet valve and the valve plate (claim 5).
  • a lead portion of the outlet valve be formed so that the lead portion in a free state leans toward said valve plate by an extent greater than the thickness of the seal member printed at the outlet valve and/or the valve plate (claim 6).
  • seal member is printed at the outlet valve in the compressor according to claim 5 or claim 6, the seal member may be printed on both surfaces of the outlet valve (claim 7).
  • seal member is printed at the valve plate in the compressor according to any of claims 1 through 8, the seal member not be printed over an area of the valve plate facing opposite the lead portion of the intake valve and/or the lead portion of the outlet valve (claim 9).
  • seal member in the compressor according to any of claims 1 through 9 be printed through screen printing.
  • seal member in the compressor according to claims 1 through 10 be an elastic film constituted of rubber or the like, so as to effectively prevent coolant leakage (claim 11).
  • the structure disclosed in claim 1 achieves a reliable seal at the contact surfaces of the intake valve and the valve plate, which are set in metal-to-metal contact in the related art without requiring a separate gasket.
  • productivity can be improved since the surface regularity of the contact surfaces of the valve plate and the intake valve does not need to be controlled as rigorously as in the related art, productivity can be improved.
  • the structure disclosed in claim 2 prevents formation of a gap between the lead portion of the intake valve and the valve plate during the assembly process.
  • the structure disclosed in claim 3 eliminates the need to use a gasket to seal the areas between the bores formed in the cylinder block.
  • the structure disclosed in claim 4 prevents the seal member from becoming worn as the lead portion at the intake valve opens/closes.
  • claims 5, 6 and 8 achieve advantages with regard to the relationship between the valve plate and the outlet valve, which are similar to the advantages achieved by adopting the structures according to claims 1 through 3 for the relationship between the valve plate and the intake valve.
  • the structure disclosed in claim 7 eliminates the need to use a gasket to seal the areas between the intake chambers and the outlet chamber defined at the rear head.
  • the structure disclosed in claim 9 prevents a seal member printed on the valve plate side from becoming worn as the lead portion of the intake valve or the outlet valve opens/closes.
  • the structure disclosed in claim 10 assures efficient production of the product according to the present invention.
  • the structure disclosed in claim 11 reliably improves the sealability between the valve plate and the intake valve or between the valve plate and the outlet valve.
  • a compressor 1 in FIG. 1, constituting part of a refrigeration cycle in an automotive air-conditioning system in which CO2 is used as a coolant, comprises a cylinder block 2, a front head 3, a rear head 4, a drive shaft 5, a swashplate mechanism 6, pistons 7, a valve plate 10, an intake valve 11, an outlet valve 12 and the like.
  • the cylinder block 2 is a substantially cylindrical member with a plurality of bores 20 arrayed circumferentially. Inside each bore 20, a compression space 21 where the coolant is compressed is formed.
  • the front head 3 is a member that seals off one end surface of the cylinder block 2, with and the front head 3 in the embodiment is mounted so as to cover the cylinder block 2.
  • the rear head 4 with intake chambers 25 and an outlet chamber 26 formed therein seals off another end surface of the cylinder block 2, with the intake chambers 25 separated from the outlet chamber 26 by a barrier wall 27.
  • the drive shaft 5 is a member assuming a substantially rod-like shape.
  • the swashplate mechanism 6, which is disposed inside the crankcase 35 defined by the front head 3 and the cylinder block 2, includes a swashplate 36, shoes 37, an angle adjustment mechanism 38, a thrust flange 39 and the like.
  • the pistons 7 are each linked to the shoes 37 so as to be allowed to move reciprocally and are also each slidably fitted inside one of the bores 20.
  • a gasket 13 As shown in FIG. 2, a gasket 13, the intake valve 11, the valve plate 10, the outlet valve 12 and a gasket 14 disposed in this order starting from the cylinder block side are held between the cylinder block 2 and the rear head 4.
  • the gaskets 13 and 14 are of the known art, each formed by covering the two surfaces of a metal plate with rubber or the like.
  • communicating holes 45 communicating between the compression spaces 21 and the intake chambers 25 and the outlet chamber 26, are formed, whereas intake ports 47 each constituting part of an intake passage 50 communicating between the intake chambers 25 and the compression spaces 21 and holes 48 large enough to house retainers 61 are formed at the gasket 14.
  • the gasket 13 disposed between the cylinder block 2 and the intake valve 11 prevents the coolant from leaking over the areas between the individual compression spaces 21 (bores 20) and the areas between the compression spaces 21 and the outside (atmosphere side), whereas the gasket 14 disposed between the outlet valve 12 and the rear head 4 prevents the coolant from leaking over the areas between the intake chambers 25 and the outlet chamber 26 and also over the areas between the intake chambers 25 and the atmosphere side.
  • valve plate 10 which is a disk-shaped member constituted of metal, intake ports 41 each constituting part of one of the intake passages 50 and outlet ports 42 each constituting part of an outlet passage 51 communicating between a compression space 21 and the corresponding outlet chamber 26 are formed.
  • the valve plate 10 is disposed adjacent to the intake valve 11 and the outlet valve 12.
  • the intake valve 11 is constituted with a metal plate having formed therein lead portions 55 each used for opening/closing the corresponding intake passage 50 and outlet ports 56 each constituting part of one of the outlet passages 51.
  • the intake valve 11 is disposed adjacent to the gasket 13 and the valve plate 10.
  • the lead portions 55 at the intake valve 11 become displaced in correspondence to the difference between the pressure in the compression spaces 21 which changes as the pistons 7 slide and the pressure in the intake chambers 25.
  • the intake passages 50 are opened and as they come in contact with the valve plate 10, the intake passages 50 are closed.
  • the outlet valve 12 is constituted with a metal plate having formed therein lead portions 59 each used for opening/closing the corresponding outlet passage 51 and intake ports 60 each constituting part of one of the intake passages 50.
  • the outlet valve 12 is disposed adjacent to the valve plate 10 and the gasket 14.
  • the lead portions 59 at the outlet valve 12 become displaced in correspondence to the difference between the pressure in the compression spaces 21 which changes as the pistons 7 slide and the pressure in the outlet chamber 26.
  • the outlet passages 51 are opened and as they come in contact with the valve plate 10, the outlet passages 51 are closed.
  • a retainer 61 which regulates the displacement of the lead portion 59 into an open state is installed within each outlet chamber 26.
  • valve plate 10 and the intake valve 11 are set so as to place their contact surfaces 10a and 11 a in contact with each other (FIG. 3 does not include an illustration of the gasket 13 inserted between the cylinder block 2 and the intake valve 11).
  • An elastic film (seal member) 65 is formed through printing at the contact surface 11 a of the intake valve 11 as an integrated part thereof in the embodiment, as shown in FIGS. 4 and 5.
  • the elastic film 65 is formed by coating the surface (contact surface 11 a) of the intake valve 11 constituted with a metal plate with a thin film constituted of rubber (high polymer) or the like through screen printing.
  • the elastic film 65 is not printed over the areas where the lead portions 55 are formed, i.e., over the moving portion, as shown in FIG. 5.
  • the lead portions 55 in a free state assumes a shape leaning toward the valve plate. 10, and are designed so as to satisfy a relationship expressed as d2 > d1 with d1 representing the thickness of the elastic film 65 and d2 representing the extent to which the lead portions 55 lean toward the valve plate. It is desirable that the thickness d1 be approximately 0.1 mm.
  • the contact surfaces of the intake valve 11 and the valve plate 10 sealed through metal to metal contact in the related art can be sealed with a higher level of reliability without requiring a separate gasket.
  • productivity can be improved. Since the elastic film 65 is not formed over the lead portions 55 at the intake valve 11, the elastic film 65 does not become worn as the lead portions 55 are displaced.
  • the lead portions 55 in the free state lean toward the valve plate 10 no gap is formed between the lead portions 55 and the valve plate 10 during the assembly process.
  • an elastic film 66 constituted of rubber or the like is formed through screen printing as an integrated part of the contact surface 10a of the valve plate 10 which comes in contact with the intake valve 11.
  • the elastic film 66 is not printed over an area 67, which faces opposite the corresponding lead portion 55 of the intake valve 11, as shown in FIG. 7.
  • the lead portions 55 in the free state lean toward the valve plate 10 are designed so as to achieve a relationship expressed as d2 > d1 with d1 representing the thickness of the elastic film 66 and d2 representing the extent to which the lead portions 55 lean toward the valve plate.
  • the intake chambers 25 are defined toward the center within the rear head 4, the outlet chamber 26 is defined further toward the outside and an elastic film 68 constituted of rubber or the like is formed through screen printing as an integrated part of the contact surface 12a of the outlet valve 12, which comes in contact with the valve plate 10.
  • the elastic film 68 is not printed over the lead portions 59 at the outlet valve 12.
  • the lead portions 59 in the free state lean toward the valve plate 10, and are designed so as to achieve a relationship expressed as d2 > d1 with d 1 representing the thickness of the elastic film 68 and d2 representing the extent to which the lead portions 59 lean toward the valve plate.
  • the contact surfaces of the valve plate 10 in the outlet valve 12, sealed through metal to metal contact in the related art, can be sealed with a higher level of reliability without using a separate gasket.
  • the productivity can be improved. Since the elastic film 68 is not formed over the lead portions 59 at the outlet valve 12, the elastic film 68 does not become worn as the lead portions 59 are displaced. Moreover, since the lead portions 59 in the free state lean toward the valve plate 10, no gap is formed between the lead portions 59 and the valve plate 10 during the assembly process.
  • the intake chambers 25 and the outlet chamber 26 are each disposed at positions identical to those assumed in embodiment 3 and an elastic film 70 constituted of rubber or the like is formed through screen printing as an integrated part at the contact surface 10b at the valve plate 10, which comes in contact with the outlet valve 12.
  • the elastic film 70 is not printed over an area 71, which faces opposite the corresponding lead portion 59 at the outlet valve 12.
  • the lead portions 59 in the free state lean toward the valve plate 10, and are designed so as to achieve a relationship expressed as d2 > d1 with d1 representing the thickness of the elastic film 70 and d2 representing the extent to which the lead portions 59 lean toward the valve plate.
  • elastic films 75 and 76 are each formed through screen printing at one of the two surfaces of the intake valve 11 and elastic films 77 and 78 are formed through screen printing each at one of the two surfaces of the outlet valve 12.
  • This structure eliminates the need for the gasket 13 and the gasket 14 respectively used on the cylinder block side and the rear head side in the other embodiments and still assures a sufficient level of sealability. As a result, a further reduction in the number of required parts and further device miniaturization are achieved.
  • the present invention provides a compressor with improved sealability between the valve plate and the intake valve or between the valve plate and the outlet valve without leading to increases in the number of required parts and the number of assembly steps or increasing the dimensions of the compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP05719891A 2004-06-21 2005-03-03 Structure étanche d'un compresseur Withdrawn EP1775472A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004182065A JP2006002716A (ja) 2004-06-21 2004-06-21 圧縮機のシール構造
PCT/JP2005/003587 WO2005124152A1 (fr) 2004-06-21 2005-03-03 Structure étanche d'un compresseur

Publications (2)

Publication Number Publication Date
EP1775472A1 true EP1775472A1 (fr) 2007-04-18
EP1775472A4 EP1775472A4 (fr) 2009-05-20

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ID=35509748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05719891A Withdrawn EP1775472A4 (fr) 2004-06-21 2005-03-03 Structure étanche d'un compresseur

Country Status (3)

Country Link
EP (1) EP1775472A4 (fr)
JP (1) JP2006002716A (fr)
WO (1) WO2005124152A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009027001A1 (fr) * 2007-08-25 2009-03-05 Ixetic Mac Gmbh Machine à piston alternatif
EP2078858A1 (fr) * 2008-01-09 2009-07-15 Sanyo Electric Co., Ltd. Compresseur et son procédé de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106968920A (zh) * 2017-05-27 2017-07-21 广东美芝制冷设备有限公司 压缩机的排气阀组件、压缩机及制冷设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH597544A5 (en) * 1976-03-30 1978-04-14 Bruno Lamparter Flap valve esp. for dry running compressor
JPS5934078A (ja) * 1982-08-20 1984-02-24 Toshiba Corp リ−ド弁装置
JPH09280167A (ja) * 1996-04-09 1997-10-28 Sanden Corp 弁板装置
JPH1096473A (ja) * 1996-09-24 1998-04-14 Nippon Reinz Co Ltd 金属ガスケット材の製造方法
DE19755241A1 (de) * 1996-12-17 1998-06-25 Zexel Corp Kühlmittelverdichter
US20020195108A1 (en) * 2001-06-25 2002-12-26 3M Innovative Properties Company Respirator valve

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01113587A (ja) * 1987-10-26 1989-05-02 Matsushita Refrig Co Ltd 圧縮機の弁装置
JP2993205B2 (ja) * 1991-09-02 1999-12-20 株式会社豊田自動織機製作所 斜板式圧縮機における冷媒ガス吸入機構のロータリーバルブ
JP3731076B2 (ja) * 1994-08-10 2006-01-05 アネスト岩田株式会社 往復圧縮機
JPH10299654A (ja) * 1997-04-22 1998-11-10 Toyota Autom Loom Works Ltd ピストン式圧縮機
JPH10122148A (ja) * 1996-10-25 1998-05-12 Sanden Corp 弁板装置
JP4001257B2 (ja) * 1999-03-17 2007-10-31 株式会社豊田自動織機 圧縮機
JP2000345984A (ja) * 1999-06-02 2000-12-12 Matsushita Electric Ind Co Ltd 圧縮機
JP2001107861A (ja) * 1999-10-06 2001-04-17 Toyota Autom Loom Works Ltd ピストン
JP2002257037A (ja) * 2001-02-23 2002-09-11 Sanden Corp 斜板式圧縮機
BR0204484B1 (pt) * 2001-03-16 2010-08-10 elemento deslizante.
JP2003065232A (ja) * 2001-08-28 2003-03-05 Toyota Industries Corp 圧縮機のシール構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH597544A5 (en) * 1976-03-30 1978-04-14 Bruno Lamparter Flap valve esp. for dry running compressor
JPS5934078A (ja) * 1982-08-20 1984-02-24 Toshiba Corp リ−ド弁装置
JPH09280167A (ja) * 1996-04-09 1997-10-28 Sanden Corp 弁板装置
JPH1096473A (ja) * 1996-09-24 1998-04-14 Nippon Reinz Co Ltd 金属ガスケット材の製造方法
DE19755241A1 (de) * 1996-12-17 1998-06-25 Zexel Corp Kühlmittelverdichter
US20020195108A1 (en) * 2001-06-25 2002-12-26 3M Innovative Properties Company Respirator valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2005124152A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009027001A1 (fr) * 2007-08-25 2009-03-05 Ixetic Mac Gmbh Machine à piston alternatif
EP2078858A1 (fr) * 2008-01-09 2009-07-15 Sanyo Electric Co., Ltd. Compresseur et son procédé de fabrication

Also Published As

Publication number Publication date
EP1775472A4 (fr) 2009-05-20
JP2006002716A (ja) 2006-01-05
WO2005124152A1 (fr) 2005-12-29

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