EP2238349B1 - Compresseur à piston comportant une plaque de soupape présentant une soupape à lamelle - Google Patents

Compresseur à piston comportant une plaque de soupape présentant une soupape à lamelle Download PDF

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Publication number
EP2238349B1
EP2238349B1 EP09702133A EP09702133A EP2238349B1 EP 2238349 B1 EP2238349 B1 EP 2238349B1 EP 09702133 A EP09702133 A EP 09702133A EP 09702133 A EP09702133 A EP 09702133A EP 2238349 B1 EP2238349 B1 EP 2238349B1
Authority
EP
European Patent Office
Prior art keywords
valve
concave
reciprocating compressor
lamella
piston
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
EP09702133A
Other languages
German (de)
English (en)
Other versions
EP2238349A2 (fr
Inventor
Eduard Gerum
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 EP2238349A2 publication Critical patent/EP2238349A2/fr
Application granted granted Critical
Publication of EP2238349B1 publication Critical patent/EP2238349B1/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
    • 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
    • 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
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • 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
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • F04B39/108—Adaptations or arrangements of distribution members the members being reed valves circular reed valves
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1087—Valve seats

Definitions

  • the present invention relates to a reciprocating compressor for generating compressed air with at least one cylinder in which a movable piston via a crank for compressing sucked ambient air is arranged, wherein a valve plate having at least one flap valve as a pressure valve, a cylinder space cylinder head side limited.
  • the field of application of the present invention extends primarily to the vehicle sector, in which piston compressors are used for compressing ambient air, primarily in the area of compressed-air-operated brake systems.
  • the reciprocating compressors draw their drive energy either directly from the internal combustion engine of the vehicle or are equipped with a separate drive, usually an electric motor.
  • a generic piston compressor DE 19631415 A1 shows a älnlichen compressor.
  • This essentially consists of a compressor housing forming a plurality of cylinders, in which each associated piston is arranged so that it can move in an oscillating manner via a common crank drive.
  • a valve plate is provided which limits the cylinder space on the cylinder head side.
  • the valve plate contains a suction on the intake side designed in the manner of a check valve and also one of the type Non-return valve trained, but oppositely acting pressure valve. In both cases space-saving finned valves are used.
  • Each louver valve has a spring plate consisting of valve lamella, which is tongue-like and is attached at one end to the valve plate. At the opposite end, the valve lamella covers a cylindrical opening through the valve plate, which connects to or from the cylinder space.
  • the valve blades are flat in cross-section and housed sunk in a shallow recess of the valve plate so that they do not protrude beyond the surface of the valve plate. At this recess, a shallow conical funnel connects, which establishes the connection to the cylindrical opening, which opens into the cylinder chamber.
  • the piston At the top dead center of the piston results in the cylinder chamber remaining dead volume, which results from the distance of the piston to the valve plate plus the volume of the cylindrical openings for the lamella valve.
  • the cylindrical openings take up a significant part of the dead volume.
  • the distance from the piston to the valve plate is determined by the thickness of the suction valve, which is usually present next to the pressure valve. Since the suction valve is usually arranged on the underside of a valve plate, ultimately determines the distance between the piston and the suction valve, the dead volume in the cylinder.
  • the disadvantage of the prior art is that the dead volume has a significant influence on the efficiency and the delivery rate of the compressor, that is to say it should be as minimal as possible, ideally zero.
  • the lamella valve has a flat valve lamella in the initial state, which is pressed by the system pressure on the valve plate on this, so that the cylindrical opening is closed in the direction of the cylinder chamber and thus is sealed. If the pressure in the cylinder chamber rises above the system pressure, the valve lamella is lifted off the valve plate and the compressed air is released from the valve Cylinder space promoted in the cylinder head.
  • the dead volume of the pressure hole is inevitable.
  • the valve plate is made relatively thick, resulting in a particularly long-lasting cylindrical breakthrough and thus results in a relatively large dead volume.
  • the invention includes the technical teaching that serving as a pressure valve blade valve on the side facing away from the piston has a machined into the valve plate concave valve seat recess, the contour of which is sealingly adapted to an equally concave valve blade.
  • the advantage of the solution according to the invention lies, in particular, in the fact that, due to the concave valve seat recess, the lamellar valve has a rather flat cylindrical opening in the direction of the cylinder space, which generates correspondingly less dead volume.
  • the present invention concave valve lamella can be made of a deep-drawn sheet metal part. This is fixed in a conventional manner with an attachment point, such as a screw, on the valve plate.
  • the diameter of the cylindrical passage extending in the direction of the cylinder space extends from the bottom region of the concave valve seat recess, ie its vertex, in the direction of the cylinder space, wherein the diameter of the aperture is smaller than the thickness of the valve plate.
  • the concave valve seat recess has a diameter in the edge region which corresponds at least to twice the diameter of the cylindrical opening.
  • the concave valve seat recess should have a diameter in the edge region, which is larger than the edge diameter of the valve lamella.
  • the depth of the concave valve seat recess should correspond at least to the thickness of the valve blade in order to effect a sufficiently large degree of deflection, and thus also an effective minimization of the dead volume.
  • that is the degree of deflection of the valve lamella and the remaining length of the cylindrical aperture can be determined by the strength of the valve blade and the valve plate.
  • valve blade assumes a substantially planar shape in the open state of the louver valve as a result of elastic deformation.
  • the space required for the open state space is significantly lower than in prior art louvered valves.
  • Fig.1 is arranged in the cylinder 1 of a reciprocating compressor, an axially movable piston 2 for compressing sucked ambient air.
  • the intake valve is not shown here, but it is the pressure valve.
  • This is designed in the manner of a lamella valve 3, which is part of a valve plate 4. With the valve plate 4, a cylinder chamber 5 is limited cylinder head side.
  • the lamella valve 3 On the side facing away from the piston 2, the lamella valve 3 has a concave valve seat recess 6 incorporated in the valve plate 4.
  • the cross-sectional contour of the Ventilsitzaus aloneung 6 is adapted to the contour of an equally concave shaped valve blade 7 such that the valve blade 7 with the Ventilsitzausnaturalung 6 form a kind seat valve.
  • the concave-shaped valve blade 7 is a deep-drawn sheet metal part, which is attached to a - not shown here - on the valve plate 4. From the bottom region of the concave Ventilsitzaus principleung 6, a cylindrical opening 8 extends in the direction of the cylinder chamber 5. Because of the concave valve seat recess 6 shortened axial extent of the opening 8, the dead volume, which occupies the piston 2 in the top dead center shown here, minimal.
  • Fig.2 takes the valve blade 7 in the open state of the louver valve 3 in consequence of elastic deformation to an almost flat shape.
  • the compressed air flows during the open state of the louver valve 3 laterally between the edge of the valve blade 7 and the edge region of the concave Ventililsitzaus principleung 6 over, which has a larger diameter in the edge region, as the edge diameter of the valve blade. 7
  • the invention is not limited to the preferred embodiment described above. On the contrary, modifications are conceivable which are included in the scope of protection of the following claims.
  • the principle according to the invention to uncharged compressors.
  • the dead volume can be significantly reduced so that the delivery rate and the power consumption of the reciprocating compressor are correspondingly improved.
  • Analogous to the solution according to the invention for the pressure valve can also be thought of for the suction valve of the valve plate, a flat recess on the underside of the valve plate, so that the suction valve no longer raised rests on the valve plate.
  • the piston bottom shelter can be reduced by the thickness of the valve lamella, including fasteners.

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

Claims (6)

  1. Compresseur à piston pour la production d'air comprimé, comprenant au moins un cylindre (1) dans lequel est disposé pour la compression d'air ambiant aspiré un piston (2) pouvant être déplacé par une commande à manivelle, dans lequel un plateau (4) de soupape, ayant comme soupape de compression au moins une soupape (3) à lamelle, délimite en tête du cylindre un espace (5) de cylindre, dans lequel la soupape (3) à lamelle a du côté éloigné du piston (2) un évidement (6) de siège de soupape concave, usiné dans le plateau (4) de soupape et dont le contour est adapté de manière étanche à une lamelle (7) de soupape conformée également de manière concave, caractérisé en ce que de la partie de fond de l'évidement (6) de siège de soupape s'étend dans la direction de l'espace (5) de cylindre une traversée (8) cylindrique, dont le diamètre est plus petit que l'épaisseur du plateau (4) de soupape et en ce que l'évidement (6) de siège de soupape concave a dans la zone de bord un diamètre qui correspond au moins au double du diamètre de la traversée (8) cylindrique.
  2. Compresseur à piston suivant la revendication 1, caractérisé en ce que la lamelle (7) de soupape concave est fabriquée à partir d'une pièce de tôle à emboutissage profond.
  3. Compresseur à piston suivant la revendication 1, caractérisé en ce que l'évidement (6) de siège de soupape concave a dans la partie de bord un diamètre qui est plus grand que le diamètre de bord de la lamelle (7) de soupape.
  4. Compresseur à piston suivant la revendication 3, caractérisé en ce que l'air sortant passe, lorsque la soupape (3) à lamelle est à l'état ouvert, latéralement entre le bord de la lamelle (7) de soupape et la partie de bord de l'évidement (6) de siège de soupape concave.
  5. Compresseur à piston suivant la revendication 1, caractérisé en ce que la profondeur de l'évidement (6) de siège de soupape concave correspond au moins à l'épaisseur de la lamelle (7) de soupape.
  6. Compresseur à piston suivant la revendication 1, caractérisé en ce que la lamelle (7) de soupape prend, lorsque la soupape (3) à lamelle est à l'état ouvert, une forme plane à la suite d'une déformation élastique.
EP09702133A 2008-01-17 2009-01-13 Compresseur à piston comportant une plaque de soupape présentant une soupape à lamelle Not-in-force EP2238349B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008004809A DE102008004809B4 (de) 2008-01-17 2008-01-17 Kolbenkompressor mit einer ein Lamellenventil aufweisenden Ventilplatte
PCT/EP2009/000137 WO2009090033A2 (fr) 2008-01-17 2009-01-13 Compresseur à piston comportant une plaque de soupape présentant une soupape à lamelle

Publications (2)

Publication Number Publication Date
EP2238349A2 EP2238349A2 (fr) 2010-10-13
EP2238349B1 true EP2238349B1 (fr) 2012-03-14

Family

ID=40785810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09702133A Not-in-force EP2238349B1 (fr) 2008-01-17 2009-01-13 Compresseur à piston comportant une plaque de soupape présentant une soupape à lamelle

Country Status (4)

Country Link
EP (1) EP2238349B1 (fr)
AT (1) ATE549514T1 (fr)
DE (1) DE102008004809B4 (fr)
WO (1) WO2009090033A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016223497A1 (de) 2016-11-28 2018-05-30 Volkswagen Aktiengesellschaft Ventileinheit und Kompressor mit einer solchen Ventileinheit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1920772U (de) * 1964-04-15 1965-08-05 Erich Becker Membran-pumpe.
JPS60122287A (ja) * 1983-12-06 1985-06-29 Mitsubishi Electric Corp 圧縮機の吐出弁装置
US5263643A (en) * 1992-12-24 1993-11-23 Therm-O-Disc, Incorporated Thermally responsive relief valve
US5584676A (en) * 1994-10-27 1996-12-17 Tecumseh Products Company Compressor discharge valve having a guided spherical head
DE19631415C2 (de) * 1995-08-11 1998-07-09 Knorr Bremse Systeme Ventilplatte für Kolbenverdichter, insbesondere für die Drucklufterzeugung in Kraftfahrzeugen
JP3742862B2 (ja) * 2003-03-05 2006-02-08 ダイキン工業株式会社 圧縮機
JP2005188421A (ja) * 2003-12-26 2005-07-14 Daikin Ind Ltd 圧縮機
AT8188U1 (de) * 2004-11-02 2006-03-15 Acc Austria Gmbh Kältemittelverdichter

Also Published As

Publication number Publication date
ATE549514T1 (de) 2012-03-15
WO2009090033A2 (fr) 2009-07-23
DE102008004809B4 (de) 2011-03-17
EP2238349A2 (fr) 2010-10-13
WO2009090033A3 (fr) 2009-09-24
DE102008004809A1 (de) 2009-07-23

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