EP1395755B1 - Compresseur de piston à plusieurs étages - Google Patents

Compresseur de piston à plusieurs étages Download PDF

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Publication number
EP1395755B1
EP1395755B1 EP02745080A EP02745080A EP1395755B1 EP 1395755 B1 EP1395755 B1 EP 1395755B1 EP 02745080 A EP02745080 A EP 02745080A EP 02745080 A EP02745080 A EP 02745080A EP 1395755 B1 EP1395755 B1 EP 1395755B1
Authority
EP
European Patent Office
Prior art keywords
valve
closing diaphragm
pressure chamber
overflow
return valve
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.)
Expired - Lifetime
Application number
EP02745080A
Other languages
German (de)
English (en)
Other versions
EP1395755A1 (fr
Inventor
Iwan Antufjew
Marko SCHRÖDTER
Stefan Beetz
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.)
Continental AG
Original Assignee
Continental AG
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 Continental AG filed Critical Continental AG
Publication of EP1395755A1 publication Critical patent/EP1395755A1/fr
Application granted granted Critical
Publication of EP1395755B1 publication Critical patent/EP1395755B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B39/1073—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
    • F04B25/00—Multi-stage pumps
    • F04B25/005—Multi-stage pumps with two 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
    • F04B25/00—Multi-stage pumps
    • F04B25/02—Multi-stage pumps of stepped piston type
    • 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
    • F04B27/02—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders arranged oppositely relative to main shaft
    • 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
    • F04B39/0005—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 adaptations of pistons
    • F04B39/0016—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 adaptations of pistons with valve arranged in the piston
    • 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
    • F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
    • F04B39/1026—Adaptations or arrangements of distribution members the members being disc valves without spring
    • 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
    • F04B39/1086—Adaptations or arrangements of distribution members the members being reed valves flat annular reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a reciprocating compressor according to the preamble of claim 1.
  • Such reciprocating compressors are used in all technical areas where there is a need for compressed air.
  • piston compressors are used in the automotive industry for air suspension and / or air damping.
  • Such a piston compressor in a two-stage design is described for example in DE 197 15 291 A1.
  • This reciprocating compressor consists of a compressor housing, in which a cylindrical low pressure chamber with a larger Niederdmckkolben and a cylindrical high pressure chamber are formed with a smaller high pressure piston.
  • the low-pressure chamber and the high-pressure chamber are located on a common axis and the low-pressure piston and the high-pressure piston are formed into a one-piece pressure piston with a common piston rod.
  • the low-pressure chamber has an inlet with an inlet check valve
  • the high-pressure chamber has an outlet with an outlet check valve
  • both pressure chambers are connected by an overflow channel in which an overflow check valve is arranged.
  • a crank pin of a crankshaft which is driven for example by an electric motor and their rotating movement in a linear movement on the one-piece pressure piston converts. This linear movement results in an oscillating movement on the pressure piston.
  • the inlet check valve, the outlet check valve, and the spill check valve have spring steel gaskets which, as in the case of the inlet check and overflow check valves, are fastened by a central screw and which sealingly cover a plurality of flow channels arranged on a pitch circle or, as in the case of Outlet check valve is held by a laterally offset screw and seal an adjacent flow channel.
  • the metallic sealing washers do not adequately seal. This is due to the fact that the closing force of the sealing washers is applied exclusively by the residual stresses of the spring steel. This closing force often counteracts even a clamping force, which starts from the fastening screw and prevents the pressure-balanced state, a smooth support of the gasket. Leaks also occur due to the fact that, over time, fatigue phenomena occur on the sealing disk and that the sealing disks do not fit perfectly against the sealing surface for this reason. To compensate for these adverse effects, the sealing discs are usually made stronger. However, this in turn increases the installation space of such a sealing disc and reduces the volume of the corresponding pressure chamber. Such reciprocating compressors are then not very powerful.
  • the invention is therefore based on the object to develop a generic reciprocating compressor whose check valves have a very low closing force and at the same time ensure a high density.
  • valve housing 4 with a cylindrical, stepped in diameter interior, which is in a low-pressure chamber 5 with a larger diameter and divides into a high-pressure chamber 6 with a smaller diameter.
  • the low pressure chamber 5 is closed with a valve housing bottom 7 and the high pressure chamber 6 with a valve housing cover 8 sealingly outwards.
  • the valve housing cover 8 is connected to the housing of the air dryer unit 3 or made in one piece.
  • a one-piece compressor piston 9 is fitted, which accordingly consists of a low-pressure piston 10 with a larger diameter, a high-pressure piston 11 with a smaller diameter and a common piston rod 12.
  • a crankcase is formed, in which engages in a rectangular orientation, the connecting rod 13 of the crankshaft 14 of the drive motor 2.
  • the low pressure chamber 5 and the high pressure chamber 6 have connections to each other and to the outside.
  • an inlet check valve 15 which connects the low-pressure chamber 5 with the atmosphere.
  • This inlet check valve 15 includes a plurality of arranged on a common circular path inlet openings 16 and a, all inlet openings 16 covering, first sealing membrane 17.
  • the closure membrane 17 is fitted in an inner counterbore, which has a crowned or angled bottom hole.
  • a centrally attached and mushroom-like fastening element 18 fixes the closure membrane 17 and holds the closure membrane 17 under a slight tension on the bottom of the counterbore.
  • this introduced by the fastening element 18 voltage is selected so that the first sealing membrane 17 is rotatable in its position and does not lift off from the inlet openings 16 in the pressure-balanced state.
  • the sealing membrane 17 and the fastening element 18 are flush in the counterbore so that no volume of the low-pressure chamber 5 is lost.
  • a continuous overflow channel 19 which connects the low-pressure chamber 5 and the high-pressure chamber 6 to one another, is furthermore located in the compressor piston 9.
  • an overflow check valve 20 is arranged in the high-pressure-side opening region of this overflow channel 19, which functionally connects or disconnects the low-pressure chamber 5 and the high-pressure chamber 6.
  • the mouth of the overflow channel 19 is expanded to a kidney-shaped in cross-section chamber 21, wherein the kidney shape follows a circular path.
  • the overflow check valve 20 consists of a cup sleeve 22 made of plastic, which rests with its bottom on the end face of the high-pressure piston 11 and sealingly abuts against the inner wall of the high-pressure chamber 6.
  • overflow check valve 20 further includes a specially designed valve holder 23 which is fittingly inserted into the interior of the cup 22 and the sleeve is shown in more detail in FIG.
  • This valve holder 23 therefore has an outer shape, which is aligned with the interior of the cup 22.
  • a cylindrical recess 24 is introduced, the axis of which is arranged at a certain amount of eccentricity away from the axis of the high-pressure piston 11. This amount of eccentricity as well as the size and the radial position of the cylindrical recess 24 ensure that the cylindrical recess 24 is in register with the kidney-shaped chamber 21 of the overflow channel 19.
  • the valve holder 23 is equipped outside the cylindrical recess 24 with distributed arranged fastening elements 25 for position-determining anchoring with the high pressure piston 11.
  • a first through hole 26 having a smaller diameter
  • a second through hole 27 having a larger diameter, which have an equal or different distance from the axis of the cylindrical recess 24 and in their position and in their extension are designed so that they are in register with the kidney-shaped chamber 21 of the overflow 19.
  • a freely resting second closure membrane 28 is fitted with such a game that it is freely movable in the direction of rotation and in the axial direction and the annular space between the second closure membrane 28 and the inner wall of the cylindrical recess 24 is suitable as an air passage.
  • the cylindrical recess 24 is further covered with a stop grid 29, on the one hand limits the axial stroke of the second closure membrane 28 and on the other hand grants the released compressed air flow a largely free passage.
  • the structure of the lattice struts is chosen freely, wherein the openings in the stop grid 29 are made so small that the second sealing membrane 28 can not jam.
  • the breakthroughs can also be different sizes.
  • the high-pressure chamber 6 has an outlet check valve 30 for connecting the high-pressure chamber 6 to a consumer line.
  • This outlet check valve 30 is arranged according to the Fig. 3 between the valve housing 4 and the valve housing cover 8 and consists of a circumferentially clamped valve plate 31 and a third sealing membrane 32.
  • the valve plate 31 is sealed against the valve housing 4 and against the valve housing cover 8 and has
  • the third sealing membrane 32 is designed as a ring and thus has a central flow bore 34. With its periphery, the third sealing membrane 32 between the valve plate 31 and the valve housing cover 8 is held while the flow bore 34 with its Diameter is sufficiently smaller than the pitch circle diameter of the diameter of the outlet openings is designed so that the outlet openings 33 are completely covered by the third sealing membrane 32.
  • the third sealing membrane 32 is installed without constructive bias, so that the closing force results only from the material-specific residual stress.
  • the first sealing membrane 17 of the inlet check valve 15, the second sealing membrane 28 of the overflow check valve 28 and the third sealing membrane 32 of the outlet check valve 30 are made of plastic, in particular of an elastic polymer, which has a high dielectric strength, high temperature resistance and elastic properties with memory Effect.
  • both the low-pressure piston 10 and the high-pressure piston 11 move between two opposing reversal points and thus form two alternately changing low-pressure chamber 5 and high-pressure chamber 6.
  • a negative pressure arises, which raises the first closing membrane 17 on its outer circumference and allows outside air to flow through the inlet openings 16.
  • This opening pressure results from the sum of the material tension of the closure membrane 17 and the installation-related bias on the closure membrane 17.
  • the negative pressure closes the second closure membrane 28 of the overflow check valve 20.
  • the low pressure chamber 5 With the reverse movement of the valve piston 9, the low pressure chamber 5 is reduced, so that the air clamped there is conveyed under pressure through the overflow 19 to the high pressure chamber 6.
  • the air first flows into the kidney-shaped chamber 21 of the overflow channel 19 and loads from there the second sealing membrane 28 in the area and in the circumference of the first through-bore 26 and the second through-bore 27.
  • a first opening force and the second Through hole 27 a second opening force on the second sealing membrane 28, both of which act in parallel.
  • the exposed second closure membrane 28 is in a lopsided position and by radial force components in a radial rotational movement, which is directed from the smaller flow bore 26 to the larger flow bore 27 and the the position of the second closure membrane 28 to the two through holes 26, 27 changed steadily.
  • Such an overload quickly leads to strike through and failure of the overflow check valve 20.
  • the exposed second closure membrane 28 opposes the flow of compressed air flow only a slightest resistance.

Landscapes

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

Claims (7)

  1. Compresseur de piston à plusieurs étages, constitué d'un logement de soupape (4) et d'un piston de soupape (9) déplaçable, entraîné suivant un mouvement d'oscillation linéaire par un moteur d'entraînement (2) et réalisé d'une seule pièce, avec un piston basse pression (10) et un piston haute pression (11), qui constituent ensemble au moins une chambre basse pression de volume variable (5) avec une soupape d'entrée antiretour (15) et au moins une chambre haute pression de volume variable (6) avec une soupape de sortie antiretour (30), une chambre basse pression (5) et une chambre haute pression (6) étant à chaque fois connectées l'une à l'autre par le biais d'un canal de débordement (19) dans lequel est insérée une soupape de débordement antiretour (20) s'ouvrant dans la direction de la chambre haute pression (6), la soupape de débordement antiretour (20) étant munie d'une rondelle d'étanchéité,
    caractérisé en ce que le canal de débordement (19) débouche dans au moins deux alésages traversants (26, 27) et la rondelle d'étanchéité de la soupape de débordement antiretour (20) est réalisée sous forme de membrane de fermeture guidée librement et de course limitée (28), les alésages traversants (26, 27) du canal de débordement (19) présentant des diamètres différents et étant disposés sur un cercle partiel commun à une distance radiale de l'axe de la membrane de fermeture (28) et étant complètement recouverts par la membrane de fermeture (28).
  2. Compresseur de piston à plusieurs étages selon la revendication 1,
    caractérisé en ce que la membrane de fermeture (28) est ajustée dans un évidement (24) d'un support de soupape (23) et est recouverte par une grille de butée (29).
  3. Compresseur de piston à plusieurs étages selon la revendication 2,
    caractérisé en ce que les deux alésages de passage (26, 27) sont pratiqués avec des diamètres différents dans l'évidement cylindrique (24) du support de soupape (23) et possèdent une liaison avec le canal de débordement (19), le canal de débordement (19) étant réalisé dans la région de son embouchure sous forme de chambre en forme de haricot (21).
  4. Compresseur de piston à plusieurs étages selon la revendication 1,
    caractérisé en ce que la membrane de fermeture (28) est constituée d'un polymère élastique ayant une haute résistance au perçage, avec une grande tenue à la température et avec des propriétés de mémoire.
  5. Compresseur de piston à un ou plusieurs étages selon la revendication 4,
    caractérisé en ce que la soupape d'entrée antiretour (15) est munie d'une première membrane de fermeture (17) et la soupape de sortie antiretour (30) est munie d'une troisième membrane de fermeture (32), lesquelles se composent également d'un polymère élastique avec les mêmes propriétés.
  6. Compresseur de piston à un ou plusieurs étages selon la revendication 5, dans lequel la soupape d'entrée antiretour (15) est munie de plusieurs ouvertures d'entrée (16) disposées sur un cercle partiel,
    caractérisé en ce que la première membrane de fermeture (17) de la soupape d'entrée antiretour (15) est ajustée dans un alésage borgne du fond du logement de soupape (7) avec un fond d'alésage bombé ou angulaire et est fixée sous contrainte par un élément de fixation disposé centralement en forme de champignon (18), l'élément de fixation (18) plongeant dans l'alésage borgne uniquement dans une mesure telle qu'il se termine en affleurement avec la surface interne du fond du logement de soupape (7) et qu'il exerce une précontrainte sur la membrane de fermeture (17) uniquement dans une mesure telle que la membrane de fermeture (17) puisse encore tourner.
  7. Compresseur de piston à un ou plusieurs étages selon la revendication 5, dans lequel la soupape de sortie antiretour (30) possède plusieurs ouvertures de sortie (33) disposées sur un cercle partiel,
    caractérisé en ce que les ouvertures de sortie (33) sont pratiquées dans une plaque de soupape (31) qui est serrée entre le logement de soupape (4) et un couvercle de logement de soupape (8) et la troisième membrane de fermeture (32) est réalisée sous forme de bague et est maintenue avec sa périphérie extérieure sans contrainte entre la plaque de soupape (31) et le couvercle de logement de soupape (8), la troisième membrane de fermeture (32) recouvrant avec sa périphérie interne les ouvertures de sortie (33).
EP02745080A 2001-05-25 2002-05-24 Compresseur de piston à plusieurs étages Expired - Lifetime EP1395755B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10125420A DE10125420C1 (de) 2001-05-25 2001-05-25 Mehrstufiger Kolbenverdichter
DE10125420 2001-05-25
PCT/DE2002/001887 WO2002095227A1 (fr) 2001-05-25 2002-05-24 Compresseur à piston multi-étage

Publications (2)

Publication Number Publication Date
EP1395755A1 EP1395755A1 (fr) 2004-03-10
EP1395755B1 true EP1395755B1 (fr) 2006-12-13

Family

ID=7686041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02745080A Expired - Lifetime EP1395755B1 (fr) 2001-05-25 2002-05-24 Compresseur de piston à plusieurs étages

Country Status (5)

Country Link
US (1) US7351044B2 (fr)
EP (1) EP1395755B1 (fr)
AT (1) ATE348266T1 (fr)
DE (2) DE10125420C1 (fr)
WO (1) WO2002095227A1 (fr)

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DE20108696U1 (de) * 2001-05-25 2001-08-30 Pnp Luftfedersysteme Gmbh Mehrstufiger Kolbenverdichter
DE102011008086A1 (de) * 2011-01-07 2012-07-12 Inficon Gmbh Doppeltwirkender Kältemittelkompressor
DE102011084666A1 (de) * 2011-02-11 2012-08-16 Continental Teves Ag & Co. Ohg Kompressorschaltung für eine pneumatische Regelvorrichtung eines Fahrzeugs
US20160061196A1 (en) * 2014-08-26 2016-03-03 Shinano Kenshi Co., Ltd. Vacuum machine, compressor, and piston
CN105003413B (zh) * 2015-07-30 2017-05-31 江苏锐升新材料有限公司 一种地板加工用的螺杆式压缩机
DE102016202270A1 (de) * 2016-02-15 2017-08-17 Continental Teves Ag & Co. Ohg Vorrichtung mit einem Luftverdichter und Rückschlagventil
TWI640707B (zh) * 2017-07-21 2018-11-11 陳家珍 排氣閥
CN107642474B (zh) * 2017-09-11 2023-09-29 南通广兴气动设备有限公司 高密封二级高压泵
CN107605718A (zh) * 2017-11-07 2018-01-19 蚌埠高科瑞力压缩机有限公司 一种压缩机用活塞气缸余隙调节的分体式活塞
DE102018130887A1 (de) * 2018-12-04 2020-06-04 Amk Holding Gmbh & Co. Kg Kolbenverdichter
DE102019120730A1 (de) * 2019-07-31 2021-02-04 Amk Holding Gmbh & Co. Kg Zylinderkolben für einen Luftkompressor
DE102021128196A1 (de) * 2021-10-28 2023-05-04 Aircom Automotive Sp. z o.o. Sp. k. Auslassventil für einen Kompressor

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Publication number Priority date Publication date Assignee Title
DE19715291A1 (de) * 1997-04-11 1998-10-15 Pnp Luftfedersysteme Gmbh Zweistufiger Kompressor

Also Published As

Publication number Publication date
ATE348266T1 (de) 2007-01-15
US7351044B2 (en) 2008-04-01
US20060104844A1 (en) 2006-05-18
DE10125420C1 (de) 2002-10-24
EP1395755A1 (fr) 2004-03-10
DE50208956D1 (de) 2007-01-25
WO2002095227A1 (fr) 2002-11-28

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