EP1288497A2 - Dichtungsanlage für Verdichter - Google Patents

Dichtungsanlage für Verdichter Download PDF

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Publication number
EP1288497A2
EP1288497A2 EP02019231A EP02019231A EP1288497A2 EP 1288497 A2 EP1288497 A2 EP 1288497A2 EP 02019231 A EP02019231 A EP 02019231A EP 02019231 A EP02019231 A EP 02019231A EP 1288497 A2 EP1288497 A2 EP 1288497A2
Authority
EP
European Patent Office
Prior art keywords
plate
sealing mechanism
compressor
cylinder block
plates
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Withdrawn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
EP02019231A
Other languages
English (en)
French (fr)
Inventor
Noriyuki Shintoku
Kuniyoshi Shirai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP1288497A2 publication Critical patent/EP1288497A2/de
Withdrawn legal-status Critical Current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
    • 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 compressor having a valve plate assembly located in a housing, which includes a cylinder block and a cylinder head. Particularly, the present invention pertains to a sealing mechanism between adjoining sections of the cylinder block and the cylinder head.
  • Japanese Laid-Open Utility Model Publication No. 56-113186 discloses a sealing mechanism including a gasket.
  • the gasket is fitted to a valve plate assembly.
  • the diameter of the gasket is greater than the diameter of any valve plate in the valve plate assembly.
  • the outer portion of the gasket protrudes from the valve plate assembly.
  • the protruding portion is located between the adjoining sections of the cylinder block and the cylinder head. The protruding portion seals the adjoining sections of the cylinder block and the cylinder head.
  • Japanese Laid-Open Patent Publication No. 10-176669 discloses another sealing mechanism.
  • the outer portion of a valve plate assembly is located between a cylinder block and a cylinder head.
  • the valve plate assembly includes a first plate and a second plate. Rubber coating is formed on both end surfaces of the first and second plates.
  • the first plate seals the adjoining sections of the cylinder block and the valve plate assembly.
  • the second plate seals the adjoining sections of the valve plate assembly and the cylinder head.
  • the sealing mechanism of prior art (1) requires a dedicated gasket (plate) for sealing the adjoining sections of the cylinder block and the cylinder head, which increases the number of parts in the compressor.
  • the gasket also increases the thickness of the group of plates located between the cylinder block and the cylinder head, which increases the axial size of the compressor.
  • the present invention provides a sealing mechanism for a compressor.
  • the compressor has a housing and a valve plate assembly.
  • the valve plate assembly is located in the housing.
  • the housing has a cylinder block and a cylinder head.
  • the cylinder block and the cylinder head are connected with each other.
  • the valve plate assembly has a plurality of plates.
  • the sealing mechanism has a seal portion.
  • the seal portion is a peripheral portion of one of the plates that extends radially outward in the compressor relative to the other plates.
  • the seal portion seals a peripheral section between the cylinder block and the cylinder head.
  • a double-headed piston swash plate type compressor according to a preferred embodiment of the present invention will be described with reference to Figs. 1 and 2.
  • the compressor forms part of a refrigeration cycle of a vehicular air conditioning system.
  • the swash plate type compressor includes a front cylinder block 11, a rear cylinder block 12, a front cylinder head 13, and a rear cylinder head 14.
  • the front cylinder block 11 and the rear cylinder block 12 are adjacent to each other.
  • the left end of the compressor in Fig. 1 is defined as the front of the compressor, and the right end is defined as the rear of the compressor.
  • the front cylinder head 13 is secured to the front end face of the front cylinder block 11 with a front valve plate assembly 15 in between.
  • the rear cylinder head 14 is secured to the rear end face of the rear cylinder block 12 with a rear valve plate assembly 16 in between.
  • the front cylinder block 11, the rear cylinder block 12, the front cylinder head 13, the rear cylinder head 14 are fastened together with bolts 17 (only one is shown) and form the housing of the compressor.
  • a bearing 18 is located in the front cylinder block 11.
  • a bearing 19 is located in the rear cylinder block 12.
  • the bearings 18, 19 rotatably support a drive shaft 20, which extends through the cylinder blocks 11, 12.
  • the drive shaft 20 is coupled to an external drive source, which is a vehicle engine (not shown) in this embodiment.
  • the drive shaft 20 is rotated by power supplied by the engine.
  • First cylinder bores 11a are formed in the front cylinder block 11.
  • the first cylinder bores 11a surround the drive shaft 20.
  • Second cylinder bores 12a are formed in the rear cylinder block 12.
  • the second cylinder bores 12a surround the drive shaft 20.
  • Each first cylinder bore 11a and one of the second cylinder bores 12a are aligned along an axis parallel to the drive shaft 20 and forms a pair.
  • the compressor has several pairs of the cylinder bores 11a, 12a (only one is shown in Fig. 1).
  • Each pair of the cylinder bores 11a, 12a accommodates a double-headed piston 21.
  • Each piston 21 has two cylindrical heads 21a. The end face of each head 21a of each piston 21 and the corresponding one of the valve plate assemblies 15, 16 define a compression chamber 22.
  • the front cylinder block 11 and the rear cylinder block 12 define a crank chamber 23 in between.
  • a drive plate which is a swash plate 24 in this embodiment, is coupled to the drive shaft 20 and is located in the crank chamber 23.
  • the swash plate 24 rotates integrally with the drive shaft 20.
  • Each piston 21 has a pair of shoes 25 at an axial center, and is coupled to the peripheral portion of the swash plate 24 with the shoes 25. Rotation of the drive shaft 20 is converted into reciprocation of the pistons 21 by the swash plate 24 and the shoes 25.
  • a dividing wall 13a projects from the inner surface of the front cylinder head 13 toward the front valve plate assembly 15.
  • a dividing wall 14a projects from the inner surface of the rear cylinder head 14 toward the rear valve plate assembly 16.
  • the distal end of the dividing wall 13a contacts the front valve plate assembly 15, which defines a suction chamber 26 and a discharge chamber 27 in the front cylinder head 13.
  • the discharge chamber 27 is located about the suction chamber 26.
  • the distal end of the dividing wall 14a contacts the rear valve plate assembly 16, which defines a suction chamber 26 and a discharge chamber 27 in the rear cylinder head 14.
  • the discharge chamber 27 is located about the suction chamber 26.
  • Each valve plate assembly 15, 16 includes suction ports 28 and suction valve flaps 30 for closing the suction ports 28.
  • Each valve plate assembly 15, 16 also includes discharge ports 29 and discharge valve flaps 31 for closing the discharge ports 29.
  • each valve plate assembly 15, 16 includes a retainer 32. When opened, the discharge valve flaps 31 contact the retainer 32, which defines the maximum opening degree of the discharge valve flaps 31.
  • Refrigerant gas is drawn into each suction chamber 26 from an external refrigerant circuit (not shown).
  • the refrigerant is drawn into the corresponding compression chamber 22 through the corresponding suction port 28 while flexing the suction valve flap 30.
  • refrigerant in the corresponding compression chamber 22 is compressed to a certain pressure.
  • the compressed gas is then discharged to the discharge chamber 27 through the corresponding discharge port 29 while flexing the discharge valve flap 31.
  • the discharged gas is supplied to the external refrigerant circuit from the discharge chamber 27.
  • valve plate assemblies 15, 16 The structure of the valve plate assemblies 15, 16 and the sealing mechanism of the compressor using the valve plate assemblies 15, 16 will now be described. Since the front valve plate assembly 15 has the same structure as that of the rear valve plate assembly 16, only the explanation of the rear valve plate assembly 16 will be given, and the explanation of the front valve plate assembly 15 will be omitted.
  • Fig. 2 is an enlarged image of a portion encircled by broken line in Fig 1.
  • the valve plate assembly 16 includes a main plate 41, a first plate 42 located between the main plate 41 and the rear cylinder block 12, a second plate 43 located between the main plate 41 and the rear cylinder head 14, and a retainer plate 44 located between the second plate 43 and the rear cylinder head 14.
  • the main plate 41 is made of, for example, a metal such as SPCC.
  • the suction ports 28 and the discharge ports 29 are formed in the main plate 41.
  • the first plate 42 is made of, for example, a metal such as hardened carbon steel.
  • the suction valve flaps 30, which are reed valves, are integrally formed with the first plate 42.
  • the second plate 43 is made of, for example, a metal such as stainless steel.
  • the discharge valve flaps 31, which are reed valves, are integrally formed with the second plate 43.
  • the retainer plate 44 is made of, for example, a metal such as SPCC.
  • the retainers 32 are integrally formed with the retainer plate 44. The retainers 32 bulge into the discharge chamber 27.
  • a rubber layer 46 is formed between the retainer plate 44 and the rear cylinder head 14. The distal end of the dividing wall 14a contacts the retainer plate 44. Accordingly, the rubber layer 46 seals the suction chamber 26 and the discharge chamber 27 from each other.
  • a rubber layer 47 is formed on each of the front end face and the rear end face of the first plate 42. That is, the first plate 42 has sealing function with rubber coatings and thus functions as a gasket.
  • the peripheral portion of the first plate 42 is extended outward compared to the plates 41, 43, 44 in the radial direction of the compressor.
  • the projecting peripheral portion forms an annular rim.
  • the rim and the corresponding portions of the rubber layers 47 form a seal portion 45.
  • the seal portion 45 is located between the adjoining peripheral sections of the rear cylinder block 12 and the rear cylinder head 14 and seals the adjoining peripheral sections.
  • the front valve plate assembly 15 has a first plate 42 with a seal portion 45.
  • the seal portion 45 seals the adjoining peripheral sections of the front cylinder block 11 and the front cylinder head 13.
  • the rubber layers 47 may be formed on both sides of any one of the plates 41, 43, 44 other than the first plate 42.
  • the peripheral portion of the one of the plates 41, 43, 44 on which the rubber layers 47 are formed is radially extended outward than the other plates 41 to 44.
  • the projected portion functions as the seal portion 45.
  • the seal portion 45 in each of the embodiments of Figs. 3 to 5 is located between each cylinder block 11, 12 and the corresponding cylinder head 13, 14.
  • the main plate 41 seals the adjoining peripheral sections of each cylinder block 11, 12 and the corresponding cylinder head 13, 14.
  • the second plate 43 seals the adjoining peripheral sections of each cylinder block 11, 12 and the corresponding cylinder head 13, 14.
  • the retainer plate 44 seals the adjoining peripheral sections of each cylinder block 11, 12 and the corresponding cylinder head 13, 14. Particularly, in the embodiment of Fig. 4, the adjoining peripheral sections of each cylinder block 11, 12 and the cylinder head 13, 14 are effectively sealed for the reason mentioned in the advantage (3) of the embodiment shown in Fig. 2.
  • the rubber layers 47 are formed only on both sides of the retainer plate 44.
  • the rubber layers 47 seal the adjoining peripheral sections of each cylinder block 11, 12 and the corresponding cylinder head 13, 14.
  • the rubber layers 47 also scal the suction chamber 26 and the discharge chamber 27 from each other. Therefore, the embodiment of Fig. 5 further reduces the cost of the sealing mechanism.
  • the rubber layers 47 may be formed only on the seal portion 45. This reduces the amount of rubber used in the compressor. However, forming rubber layers on the entire end faces of the plates 41 to 44 as illustrated in Figs. 1 to 5 is easier than forming rubber layers on part (peripheral portion) of the plates 41 to 44. Forming rubber layers on the entire end faces of the plates 41 to 44 eliminates spaces between each adjacent pair of the plates 41 to 44 and stabilizes the plates 41 to 44.
  • the sealing material is not limited to rubber. However, resin or soft metal may be used.
  • each retainer 32 need not be located in the corresponding valve plate assembly 15, 16.
  • the maximum opening degree of each discharge valve flap 31 may be defined by contact between the discharge valve flaps 31 and the inner wall of the corresponding cylinder head 13, 14.
  • the retainer plates 44 may be omitted and the structure of the valve plate assemblies 15, 16 is simplified.
  • the dividing wall 13a, 14a of each cylinder head 13, 14 contacts the corresponding second plate 43. If the retainer plates 44 are omitted from the embodiments of Figs. 2 and 3, a rubber coating is formed on the end face of each second plate 43 that faces the corresponding cylinder head 13, 14 to seal the suction chamber 26 and the discharge chamber 27 from each other.
  • the adjoining peripheral sections of the front cylinder block 11 and the front cylinder head 13 may be sealed by a different one of the plates 41 to 44 from the plate that seals the adjoining peripheral sections of the rear cylinder block 12 and the rear cylinder head 14.
  • the peripheral adjoining sections of the front cylinder block 11 and the front cylinder head 13 may be sealed by the first plate 42 of the front valve plate assembly 15, and the peripheral adjoining sections of the rear cylinder block 12 and the rear cylinder head 14 may be sealed by the second plate 43 of the rear valve plate assembly 16.
  • the present invention may be embodied in the sealing mechanism of a single-headed piston type compressor.
  • the present invention may be embodied in the sealing mechanism of a wobble plate type compressor.
  • the present invention may be embodied in the sealing mechanism of a wave cam type compressor having a wave cam instead of a swash plate.
  • the wave cam functions as a drive plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
EP02019231A 2001-08-28 2002-08-27 Dichtungsanlage für Verdichter Withdrawn EP1288497A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001257949 2001-08-28
JP2001257949A JP2003065232A (ja) 2001-08-28 2001-08-28 圧縮機のシール構造

Publications (1)

Publication Number Publication Date
EP1288497A2 true EP1288497A2 (de) 2003-03-05

Family

ID=19085542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02019231A Withdrawn EP1288497A2 (de) 2001-08-28 2002-08-27 Dichtungsanlage für Verdichter

Country Status (6)

Country Link
US (1) US20030044294A1 (de)
EP (1) EP1288497A2 (de)
JP (1) JP2003065232A (de)
KR (1) KR20030019127A (de)
CN (1) CN1401902A (de)
BR (1) BR0203477A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1517038A2 (de) * 2003-09-18 2005-03-23 Zexel Valeo Compressor Europe GmbH Dichtanordnung eines Kompressors

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6899199B2 (en) * 2002-10-24 2005-05-31 Barnes Group Inc. Flapper finger valve assembly
JP2005344625A (ja) * 2004-06-03 2005-12-15 Zexel Valeo Climate Control Corp 圧縮機
JP2006002716A (ja) * 2004-06-21 2006-01-05 Zexel Valeo Climate Control Corp 圧縮機のシール構造
US20060016483A1 (en) * 2004-07-20 2006-01-26 Barnes Group Inc. Valve or valve plate having an integrated gasket
IN2015MN00117A (de) 2012-07-23 2015-10-16 Emerson Climate Technologies
US20140024563A1 (en) 2012-07-23 2014-01-23 Emerson Climate Technologies, Inc. Anti-wear coatings for compressor wear surfaces
CN106286230B (zh) * 2016-10-17 2018-10-19 珠海格力节能环保制冷技术研究中心有限公司 一种压缩机及其阀板

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416190A (en) * 1979-12-13 1983-11-22 Diesel Kiki Co., Ltd. Seal for compressor
JPH01182580A (ja) * 1988-01-13 1989-07-20 Sanden Corp 容量可変型揺動式圧縮機
JPH0640389U (ja) * 1992-10-28 1994-05-27 サンデン株式会社 圧縮機の吐出弁装置
JPH09250451A (ja) * 1996-03-19 1997-09-22 Sanden Corp 容量可変型揺動斜板式圧縮機のピストン
JP3757580B2 (ja) * 1996-11-25 2006-03-22 株式会社豊田自動織機 圧縮機
JPH11343974A (ja) * 1998-05-29 1999-12-14 Toyota Autom Loom Works Ltd 往復動型圧縮機
KR100363930B1 (ko) * 1999-04-01 2002-12-11 가부시키가이샤 도요다 지도숏키 압축기에 있어서의 밸브형성체의 위치결정구조
KR100389013B1 (ko) * 2000-01-11 2003-06-25 가부시키가이샤 도요다 지도숏키 피스톤식 압축기 및 그 조립방법
JP2002115657A (ja) * 2000-10-05 2002-04-19 Toyota Industries Corp ピストン式圧縮機におけるシリンダ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1517038A2 (de) * 2003-09-18 2005-03-23 Zexel Valeo Compressor Europe GmbH Dichtanordnung eines Kompressors
EP1517038A3 (de) * 2003-09-18 2009-07-22 Valeo Compressor Europe GmbH Dichtanordnung eines Kompressors

Also Published As

Publication number Publication date
CN1401902A (zh) 2003-03-12
US20030044294A1 (en) 2003-03-06
JP2003065232A (ja) 2003-03-05
KR20030019127A (ko) 2003-03-06
BR0203477A (pt) 2003-05-20

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