EP1831568B1 - Systeme de piston-cylindre, notamment pour compresseur a plateau oscillant - Google Patents

Systeme de piston-cylindre, notamment pour compresseur a plateau oscillant Download PDF

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Publication number
EP1831568B1
EP1831568B1 EP05819526A EP05819526A EP1831568B1 EP 1831568 B1 EP1831568 B1 EP 1831568B1 EP 05819526 A EP05819526 A EP 05819526A EP 05819526 A EP05819526 A EP 05819526A EP 1831568 B1 EP1831568 B1 EP 1831568B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston
lining
housing
arrangement according
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.)
Not-in-force
Application number
EP05819526A
Other languages
German (de)
English (en)
Other versions
EP1831568A1 (fr
Inventor
Dieter Spurny
Dieter Weisse
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge 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
Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH, Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP1831568A1 publication Critical patent/EP1831568A1/fr
Application granted granted Critical
Publication of EP1831568B1 publication Critical patent/EP1831568B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/064—Cooling by a cooling jacket in the pump casing
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/166—Cylinder liners

Definitions

  • the invention relates to a piston-cylinder arrangement of a compressor, in particular a swash plate compressor, with a housing forming the cylinder; in which a piston is housed to generate compressed air.
  • a so-called swash plate compressor which has a plurality of piston-cylinder assemblies, which serve to generate compressed air.
  • the cylinders are arranged directly in the housing, ie formed by the housing wall.
  • the housing is usually made as a casting, which is machined.
  • the sealing rings of the piston come directly to the inner wall of the cylinder formed by the housing to the plant and cause in the reciprocating motion due to the sliding friction occurring here a significant heat development. So far, the resulting heat was dissipated by radiation on the outside of the housing to the environment.
  • a piston-cylinder arrangement with the features according to the preamble of claim 1 is known from EP 0 994 252 A2 known.
  • the compressor For lubricating the swash plate compressor oils are used, which come in accordance with the said prior art from the oil circuit of the drive motor of such a unit to which such a compressor is placed.
  • the compressor is arranged in a vehicle and is intended to generate pressure medium for fluid-operated units in the vehicle. So in this case the oil circuit of the vehicle engine is tapped.
  • the invention is therefore based on the object that the cylinder wall temperature is reduced while increasing the compressor capacity to a tolerable material level.
  • the core of the invention here is that in the cylinder formed by the housing, a separate, cooled cylinder liner is used, which is preferably provided with at least three longitudinal ribs for spacing relative to the surrounding cylinder wall and to prevent rotation.
  • the longitudinal ribs may alternatively be arranged on the part of the housing. Three longitudinal ribs are sufficient to achieve an immovable distance. Due to the distance thus formed, i. the resulting chambers, coolant can flow.
  • each longitudinal rib engages in a corresponding partially complementary groove of the cylinder wall or vice versa, so that due to an at least partially positive engagement, the inner cylinder liner against the cylinder wall of the housing is additionally secured against rotation.
  • the outer diameter of the cylinder liner respectively the longitudinal ribs, and the groove in the cylinder wall or the cylinder liner, and the cylinder inner wall diameters are coordinated so that arise between the cylinder liner and cylinder walls chambers.
  • the chambers should be connected to each other in such a way that they can be flowed through efficiently with a coolant.
  • the chambers are arranged fluidically in series.
  • all Chambers are fluidically connected in parallel to each other. With high coolant flow rate, a particularly good cooling effect can be achieved hereby.
  • the cylinder liner is provided at both end faces with sealing rings for sealing against adjacent components.
  • sealing rings for sealing against adjacent components.
  • annular grooves are arranged in the end faces of the cylinder liner, in which the sealing rings can be inserted standing on, in order to achieve a reliable sealing effect at accurate position assurance.
  • a plurality of thus formed piston-cylinder assemblies are now arranged in parallel and their pressure chambers, as well as their coolant spaces fluidly connected to each other. This results, on the one hand, in the fact that a relatively large overall pressure medium delivery rate can be achieved and, on the other hand, that a closed cooling circuit can be formed for the entire compressor unit.
  • the cylinder liner is made of an extruded profile with integrated longitudinal ribs.
  • FIG. 1 shows a piston-cylinder assembly 1 in the exemplary embodiment of a swash plate compressor in a partial view.
  • the piston 5 are arranged with the piston rod 7.
  • the bush 8 according to the invention is arranged within the housing 2.
  • the piston 5 is dimensioned so that it runs over the piston sealing rings 9 tight inside the cylinder liner. The friction arises between the piston sealing rings 9 and the cylinder liner 8 according to the invention.
  • the cylinder liner 8 does not extend material-filling in the remaining interior of the otherwise used in the prior art cylinder chamber, but reduces the original cylinder space to the inner diameter of the cylinder liner eighth
  • the cylinder liner 8 furthermore has longitudinal ribs 6 integrally formed on the outer circumference and holding the same in a chamber-forming distance from the inner wall of the housing 2 or the original cylinder inner wall.
  • the chambers shown even more clearly in the following figure are additionally sealed at the end faces of the cylinder liner 8 with respect to the rest of the interior, or with respect to the actual cylinder space thus formed, in which the piston 5 is guided.
  • the end faces of the cylinder liner 8 are provided with sealing rings which are inserted in there introduced annular grooves.
  • the chambers 11 ... formed by the longitudinal ribs are flowed through by a coolant.
  • a coolant As a result, the heat can be dissipated directly in the region of the resulting friction.
  • this area is prevented from overheating. It prevents the formation of carbon deposits.
  • the piston rod 7 engages - as in the prior art - in the storage with a swash plate, which is connected to a drive, and converts the rotational movement of a drive shaft in strokes of the piston.
  • a plurality of piston-cylinder assemblies 1 are coupled via the respective piston rods to the swash plate.
  • FIG. 2 shows a cross section through the piston-cylinder assembly 1 according to the invention in the range of the cylinder liner 8 according to the invention.
  • the cylinder liner 8 is placed within the original cylinder space so that the molded on the outside of the cylinder liner 8 longitudinal ribs 6 rest against the inner wall of the original cylinder chamber.
  • complementary molded grooves 30 are provided within the wall, in which the longitudinal ribs 6 of the cylinder liner 8 eino form fit, i. be inserted during assembly.
  • the form fit is dimensioned so that the longitudinal ribs 6 eino only partially with respect to the depth, so that a solid rotationally secure position is achieved. Nevertheless, the rest of the cross section of the longitudinal ribs 6 to hold the cylinder liner 8 according to the invention to the original cylinder inner wall in a defined wall distance, so that between chambers 11, 12, 13 and 14 can form.
  • the four longitudinal ribs 6 result in this case four divided chambers 11, 12, 13 and 14. These chambers 11, 12, 13 and 14 are, as in FIG. 1 was visible, sealed at the end faces of the cylinder liner 8 with sealing rings. On the one hand against each other and on the other hand also with respect to the interior in the housing 2 and the new cylinder space formed by the cylinder liner 8.
  • channels may be provided which connect the chambers 11, 12, 13, 14 serially or in parallel with a coolant circuit.
  • a plurality of piston-cylinder assemblies are mechanically coupled to a swash plate.
  • the chambers thus created as a whole can be connected in series or in parallel through a coolant circuit.

Landscapes

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

Claims (8)

  1. Système de piston-cylindre d'un compresseur à plateau oscillant, comprenant une enveloppe (2) qui forme le cylindre et dans laquelle est logé un piston (5) pour la production d'air comprimé, une boîte (8) de glissement cylindrique et refroidie étant, pour améliorer le refroidissement, disposée dans le cylindre formé par l'enveloppe (2),
    caractérisé en ce que la boîte (8) de glissement cylindrique ou l'enveloppe (2) est munie d'au moins trois cannelures (6) pour le maintien à distance uniforme de l'enveloppe (2) entourante ou de la boîte (8) de glissement cylindrique ainsi que pour bloquer en rotation lesdits éléments correspondants, de manière à créer par la distance formée des chambres (11, 12, 13, 14), dans lesquelles peut passer à des fins de refroidissement un fluide réfrigérant se déplaçant dans un circuit de refroidissement.
  2. Système piston-cylindre suivant la revendication 1,
    caractérisé en ce que, dans le cas d'une boîte (8) de glissement cylindrique distincte, au moins deux des cannelures (6) pénètrent dans une rainure (30) de la paroi du cylindre correspondante et constituée au moins de manière partiellement complémentaire, de manière à bloquer en rotation, en raison d'une pénétration à complémentarité de formes, la boîte (8) de glissement cylindrique par rapport à la paroi cylindrique de l'enveloppe (2).
  3. Système piston-cylindre suivant la revendication 2,
    caractérisé en ce que le diamètre extérieur de la boîte (8) de glissement cylindrique, respectivement de toutes les cannelures (6) ainsi que des rainures (30) associées dans la paroi cylindrique, ainsi que le diamètre intérieur de la paroi cylindrique, sont adaptés également les uns aux autres de manière à donner les chambres (11, 12, 13, 14) entre la boîte (8) de glissement cylindrique et la paroi cylindrique de l'enveloppe (2).
  4. Système piston-cylindre suivant la revendication 1,
    caractérisé en ce que les chambres (11, 12, 13, 14) communiquent entre elles du point de vue de la technique de l'écoulement suivant un circuit en série ou un circuit en parallèle.
  5. Système piston-cylindre suivant la revendication 4,
    caractérisé en ce que la boîte (8) de glissement cylindrique est munie sur les deux surfaces frontales de bagues (9) d'étanchéité pour ménager une étanchéité des chambres (11, 12, 13, 14), parcourues par du fluide réfrigérant, de la boîte (8) de glissement cylindrique par rapport à des éléments voisins.
  6. Système piston-cylindre suivant la revendication 5,
    caractérisé en ce que dans les côtés frontaux de la boîte (8) de glissement cylindrique sont ménagées des rainures annulaires ayant une section transversale en partie profilée, dans lesquelles les bagues (9) d'étanchéité peuvent être insérées en dépassant vers l'extérieur.
  7. Système piston-cylindre suivant l'une des revendications précédentes,
    caractérisé en ce que la boîte (8) de glissement cylindrique est constituée d'un profilé extrudé ayant des cannelures (6) intégrées.
  8. Système piston-cylindre suivant l'une des revendications 1 à 6 précédentes,
    caractérisé en ce que l'enveloppe (2) et la boîte (8) de glissement cylindrique sont coulées en une seule pièce et sont usinées ensuite avec enlèvement de copeaux.
EP05819526A 2004-12-20 2005-12-16 Systeme de piston-cylindre, notamment pour compresseur a plateau oscillant Not-in-force EP1831568B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004061224A DE102004061224B4 (de) 2004-12-20 2004-12-20 Kolben-Zylinder-Anordnung, insbesondere für einen Taumelscheibenverdichter
PCT/EP2005/013603 WO2006066829A1 (fr) 2004-12-20 2005-12-16 Systeme de piston-cylindre, notamment pour compresseur a plateau oscillant

Publications (2)

Publication Number Publication Date
EP1831568A1 EP1831568A1 (fr) 2007-09-12
EP1831568B1 true EP1831568B1 (fr) 2008-04-16

Family

ID=35811535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05819526A Not-in-force EP1831568B1 (fr) 2004-12-20 2005-12-16 Systeme de piston-cylindre, notamment pour compresseur a plateau oscillant

Country Status (4)

Country Link
EP (1) EP1831568B1 (fr)
AT (1) ATE392552T1 (fr)
DE (2) DE102004061224B4 (fr)
WO (1) WO2006066829A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008061897A1 (de) * 2008-12-11 2010-06-17 Pfeiffer Vacuum Gmbh Kolbenvakuumpumpe
DE102013100013B4 (de) * 2013-01-02 2016-08-18 Aircom Automotive Sp. z o.o. Sp. k. Kolbenverdichtungsvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US706979A (en) * 1901-08-15 1902-08-12 Pedrick And Ayer Company Compound air-compressor.
US3458114A (en) * 1967-03-13 1969-07-29 Champion Pneumatic Machinery C Compressor
EP0730092B1 (fr) * 1995-03-03 1997-12-29 Cryopump Ag Pompe pour pomper un fluide contenant un gaz liquéfié et dispositif comprenant une telle pompe
DE19706066A1 (de) * 1997-02-17 1997-11-20 Hans Dipl Ing Unger Kompressor, insbesondere für die Drucklufterzeugung in Kraftfahrzeugen
DE19847159C2 (de) * 1998-10-13 2001-12-06 Hans Unger Kompressor zur Erzeugung ölfreier Druckluft
DE19909689B4 (de) * 1999-03-05 2009-07-23 Rohs, Ulrich, Dr.-Ing. Kolbenmotor mit kontinuierlicher Verbrennung
DE10109514C1 (de) * 2001-02-28 2002-07-11 Knorr Bremse Systeme Trockenlaufender Kolbenverdichter (Kurbeltriebschmierung)
DE10308430A1 (de) * 2003-02-27 2004-09-09 Unger, Hans, Dipl.-Ing. Zweizylinder-Axialkolbenkompressor für die Erzeugung ölfreier Druckluft

Also Published As

Publication number Publication date
ATE392552T1 (de) 2008-05-15
DE102004061224A1 (de) 2006-06-29
DE502005003786D1 (de) 2008-05-29
WO2006066829A1 (fr) 2006-06-29
EP1831568A1 (fr) 2007-09-12
DE102004061224B4 (de) 2010-09-09

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