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EP1259735A2 - Machine a pistons alternatifs - Google Patents

Machine a pistons alternatifs

Info

Publication number
EP1259735A2
EP1259735A2 EP01915075A EP01915075A EP1259735A2 EP 1259735 A2 EP1259735 A2 EP 1259735A2 EP 01915075 A EP01915075 A EP 01915075A EP 01915075 A EP01915075 A EP 01915075A EP 1259735 A2 EP1259735 A2 EP 1259735A2
Authority
EP
European Patent Office
Prior art keywords
housing
housing cover
reciprocating piston
ring nut
piston machine
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.)
Granted
Application number
EP01915075A
Other languages
German (de)
English (en)
Other versions
EP1259735B1 (fr
Inventor
Frank Obrist
Peter Kuhn
Volker Seipel
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.)
Ixetic Mac GmbH
Original Assignee
LuK Fahrzeug Hydraulik GmbH and Co KG
Ixetic Mac GmbH
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
Priority claimed from DE20013202U external-priority patent/DE20013202U1/de
Priority claimed from DE20022264U external-priority patent/DE20022264U1/de
Application filed by LuK Fahrzeug Hydraulik GmbH and Co KG, Ixetic Mac GmbH filed Critical LuK Fahrzeug Hydraulik GmbH and Co KG
Publication of EP1259735A2 publication Critical patent/EP1259735A2/fr
Application granted granted Critical
Publication of EP1259735B1 publication Critical patent/EP1259735B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0891—Component parts, e.g. sealings; Manufacturing or assembly thereof 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings

Definitions

  • the invention relates to a reciprocating piston machine, in particular a compressor, preferably for the air conditioning system of a motor vehicle, with a housing and a housing cover, the working unit comprising the pistons being arranged or formed in the housing and the suction and outlet region being arranged or formed in the housing cover, and the housing cover is screwed to the housing.
  • Such compressors are usually referred to as air conditioning compressors and comprise a housing which includes a compressor or pump unit driven from outside.
  • the pump unit for example designed as an axial piston pump, in turn comprises at least one piston which can be moved back and forth in a cylinder block.
  • Such a compressor is usually equipped with a plurality of pistons, which are moved back and forth when a swash plate is rotated via a receiving plate or when a swivel plate is pivoted in the direction of its longitudinal axis, the receiving plate being mounted in the housing in a rotationally fixed manner in the case of a swash plate.
  • the housing is usually closed off by a housing cover which is screwed or welded to the housing, for example.
  • Swash plate compressors are known in a wide variety of embodiments. By way of example only, reference is made to DE 44 41 721 A1 and DE 196 11 004 A1.
  • the compressor comprises a swash plate supported on a drive shaft in order to carry out a uniform rotary movement.
  • the swash plate is coupled to a plurality of pistons which can be moved back and forth in a cylinder block, the cylinder-piston arrangement being used to compress one Serves gas.
  • the pistons can also be double-acting pistons.
  • connection between the housing and the housing cover is a welded connection
  • the reciprocating piston machine can only be opened with considerable effort and possibly with the destruction of individual components. In this respect, the replacement of parts is no longer possible or only to a limited extent from an economic point of view.
  • the present invention is based on the object of designing and developing a reciprocating piston machine of the generic type in such a way that a simple and reversible connection between the housing and the housing cover can be achieved with simple means and with sufficient tightness.
  • the reciprocating piston machine according to the invention achieves the above object by means of the features of patent claim 1.
  • the screw connection already implemented in the prior art is of a very special design, namely in the form of a ring nut acting between the housing and the housing cover or a single thread.
  • a screw connection using a ring nut or thread can be implemented regardless of the interior of the reciprocating piston machine.
  • a screw connection with a ring nut or thread with or without internal screwing of the cylinder block / valve plate / pressure cover assembly could take place.
  • the main focus is on the external seal, which can be easily implemented using a ring nut or thread.
  • the flow of force in the reciprocating piston machine can be closed by means of a ring nut or thread.
  • a ring nut or thread apart from the shaft bushing and the connections, when using the ring nut or an external thread on the cover (FIG. 2), only a single housing seal is required, namely in the area of the ring nut or the external thread.
  • a ring nut Another advantage of using a ring nut is that it can be easily welded to the housing and the housing cover - in addition - in a simple manner. It is also possible to replace the ring nut with a welding ring. In addition, the use of a ring nut or a thread, in contrast to numerous tension / anchor screws, leads to a very considerable reduction in weight.
  • the ring nut can be screwed into the housing on the end face or protrudes into the housing between the housing and a part of the housing cover that projects at least slightly into the housing.
  • that forms Ring nut has an end-side end of the housing projecting beyond the edge of the cover, the housing cover being able to extend in the direction facing away from the housing.
  • a channel serving as a leakage path preferably in the form of an annular channel, between the housing and the housing cover directly behind the ring nut or behind the thread. This channel could also serve to relieve pressure in the connection area between the housing and the housing cover.
  • a sufficient seal can be achieved by only a single seal, such a seal being able to be provided between the housing and the housing cover in the area immediately behind the ring nut or the thread.
  • an inner seal it is possible for an inner seal to be provided between the housing and the housing cover at a distance from the ring nut or the thread, the inner seal being a circumferential sealing ring.
  • the ring nut or the thread could be provided with a lubricant. It is also conceivable that the ring nut or the thread is preferably coated at least in regions with a polymeric material and may be designed to be self-locking.
  • the ring nut could be made of metal, especially a hardened metal.
  • FIG. 1 in a schematic representation, partially, an embodiment of a reciprocating piston machine according to the invention in the form of a reciprocating piston compressor, only the features according to the invention being shown there,
  • FIG. 2 in a schematic representation, partially and enlarged compared to Fig. 1, another embodiment of a reciprocating piston machine according to the invention, only the interaction between the housing and the housing cover together with seals is shown and
  • FIG. 3 in a schematic representation, partially and enlarged compared to Fig. 1, again another embodiment of a reciprocating piston machine according to the invention, wherein only the interaction between the housing and the housing cover and seals is shown.
  • Fig. 1 shows - partially - a compressor for the air conditioning system of a motor vehicle.
  • the compressor comprises a housing 1 and a compression unit 2 arranged in the housing 1 for sucking in and compressing a refrigerant, the refrigerant preferably being CO2.
  • the refrigerant flows from a suction area 4 formed in a front housing cover 3 through the compressor unit 2 into the outlet area 5 also formed in the housing cover 3.
  • the compressor unit 2 serves to draw in and compress the refrigerant, the compressor unit 2 comprising pistons 7 running in a cylinder block 6 and a swivel disk driving the pistons 7, which is not shown in the figure.
  • Figure 1 further shows that the housing 1 and the housing cover 3 are screwed together.
  • the screw connection is designed in the form of an annular nut 8 acting between the housing 1 and the housing cover 3.
  • the figure further shows that the ring nut 8 can be screwed or screwed into the housing 1 or projecting into the housing 1 between the housing 1 and a part of the housing cover 3 which projects slightly into the housing 1, the ring nut 8 being an external thread and that Housing 1 has an internal thread 12.
  • a channel 9 serving as a leakage path in the form of an annular channel is formed directly behind the ring nut 8. Thereafter, an inner seal is also provided between the housing 1 and the housing cover 3, likewise in the area immediately behind the ring nut 8, this specifically being a circumferential sealing ring 10.
  • the groove 11 in the housing cover 3 can be flared upwards to accommodate the ring nut 8.
  • the shoulder or the collar 13 of the cover is increasingly pressed against the valve plate 14 and a collar or a shoulder 15 of the cylinder block 6.
  • the ring nut 8 itself can be coated with a polymeric material or provided with lubricant, as a result of which the tolerance range of the tightening torques can be narrowed.
  • the ring nut 8 is made of metal.
  • FIG. 2 shows a further exemplary embodiment of a reciprocating piston machine according to the invention, the interaction of housing 1 and housing cover 3 being shown there - partially and enlarged.
  • the housing cover 3 comprises an external thread 16 and the housing 1 an internal thread 12, the external thread 16 and the internal thread 12 interacting.
  • FIG. 2 also shows the structural features already shown in FIG. 1, for example the provision of the seal 10 or the channel 9 forming a leakage path. In this regard, reference is made to the explanations relating to FIG. 1.
  • FIG. 2 also shows the provision of a fastening screw 17 for fastening the valve block 18 for the control valves not shown in FIG. 2.
  • the suction area 4 is provided with a thermal insulation coating 19.
  • FIG. 3 likewise shows, in a schematic illustration, partially enlarged compared to FIG. 1, a further exemplary embodiment of a reciprocating piston machine according to the invention, only the interaction between the housing 1 and the housing cover 3 also being shown there.
  • a very special housing cover 3 is used there, which is screwed to the housing 1 like a union nut.
  • the housing cover 3 comprises an internal thread 20 which interacts with a partially formed external thread 21 of the housing 1.
  • the housing cover 3 comes into contact with the housing 1 with a clamping shoulder 22.
  • the provision of the clamping shoulder 22 ensures that the housing cover 3 clamps the cylinder block 6 between the housing 1 and the housing cover 3.
  • a seal 23 acts between the cylinder block 6 and the housing 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressor (AREA)

Abstract

L"invention concerne une machine à pistons alternatifs, en particulier un compresseur, notamment pour la climatisation d"un véhicule automobile, comprenant un carter (1) et un couvercle (3) de carter. L"unité de travail (2) comprenant les pistons (7) est disposée voire formée dans le carter (1) et la partie admission et échappement (4, 5) est disposée voire formée dans le couvercle (3) de carter, ce dernier étant vissé sur le carter (1). L"invention est caractérisée en ce que, dans le but de simplifier la conception tout en maintenant une étanchéité suffisante, l"assemblage vissé se présente sous la forme d"un filet unique établissant la liaison entre le carter (1) et le couvercle (3) de carter.
EP01915075A 2000-03-03 2001-03-05 Machine a pistons alternatifs Expired - Lifetime EP1259735B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE20013202U DE20013202U1 (de) 2000-03-03 2000-03-03 Hubkolbenmaschine
DE20013202U 2000-03-03
DE20022264U 2000-07-31
DE20022264U DE20022264U1 (de) 2000-03-03 2000-07-31 Hubkolbenmaschine
PCT/DE2001/000819 WO2001065070A2 (fr) 2000-03-03 2001-03-05 Machine a pistons alternatifs

Publications (2)

Publication Number Publication Date
EP1259735A2 true EP1259735A2 (fr) 2002-11-27
EP1259735B1 EP1259735B1 (fr) 2009-01-14

Family

ID=26056429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01915075A Expired - Lifetime EP1259735B1 (fr) 2000-03-03 2001-03-05 Machine a pistons alternatifs

Country Status (4)

Country Link
EP (1) EP1259735B1 (fr)
AU (1) AU4228901A (fr)
DE (1) DE10190756D2 (fr)
WO (1) WO2001065070A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3947969A1 (fr) * 2019-04-03 2022-02-09 Maersk Container Industry A/S Ensemble carter de compresseur ou de pompe et procédé d'assemblage associé

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10292227D2 (de) 2001-05-23 2004-04-29 Luk Fahrzeug Hydraulik Verdichter
DE102005010756B4 (de) * 2005-03-09 2009-05-07 Audi Ag Getriebegehäuse für ein Kraftfahrzeug
DE102011114904A1 (de) 2011-10-05 2013-04-11 Ixetic Bad Homburg Gmbh Verdichter mit Druckentlastungsnut
DE102017207366A1 (de) * 2017-05-02 2018-11-08 Man Diesel & Turbo Se Kompressorgehäuse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2392543A (en) * 1939-06-22 1946-01-08 Mercier Jean Pump
US2972955A (en) * 1957-03-21 1961-02-28 Richter Harald Submersible pump
DE1653374A1 (de) * 1967-01-02 1971-10-14 Louis Berholz Als Pumpe oder Motor betreibbare Druckfluessigkeits-Axialkolbenmaschine
TW283186B (fr) 1993-11-24 1996-08-11 Toyota Automatic Loom Co Ltd
JP3429100B2 (ja) 1995-03-22 2003-07-22 株式会社豊田自動織機 両頭斜板式圧縮機
DE19807691B4 (de) * 1997-03-03 2012-07-12 Ixetic Bad Homburg Gmbh Kompressor, insbesondere für eine Klimaanlage eines Kraftfahrzeugs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0165070A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3947969A1 (fr) * 2019-04-03 2022-02-09 Maersk Container Industry A/S Ensemble carter de compresseur ou de pompe et procédé d'assemblage associé

Also Published As

Publication number Publication date
EP1259735B1 (fr) 2009-01-14
WO2001065070A2 (fr) 2001-09-07
WO2001065070A3 (fr) 2002-03-28
AU4228901A (en) 2001-09-12
DE10190756D2 (de) 2003-06-12

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