EP2606236A2 - Vacuum pump - Google Patents

Vacuum pump

Info

Publication number
EP2606236A2
EP2606236A2 EP11748624.1A EP11748624A EP2606236A2 EP 2606236 A2 EP2606236 A2 EP 2606236A2 EP 11748624 A EP11748624 A EP 11748624A EP 2606236 A2 EP2606236 A2 EP 2606236A2
Authority
EP
European Patent Office
Prior art keywords
housing
vacuum pump
housing bottom
pump according
shell
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Withdrawn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
EP11748624.1A
Other languages
German (de)
French (fr)
Inventor
Hans-Peter Ott
Willi Schneider
Torsten Helle
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.)
Joma Polytec GmbH
Original Assignee
Joma Polytec 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=44510969&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2606236(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Joma Polytec GmbH filed Critical Joma Polytec GmbH
Publication of EP2606236A2 publication Critical patent/EP2606236A2/en
Withdrawn legal-status Critical Current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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7838—Plural
    • Y10T137/7839—Dividing and recombining in a single flow path
    • Y10T137/784—Integral resilient member forms plural valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/789—Central mount

Definitions

  • the invention relates to a vacuum pump, in particular a vane pump, with a pump housing, in which a suction chamber is provided, and an opening into the suction pump housing breakthrough, wherein in the pump housing opening into the open or in an external vacuum chamber opening suction check valve is arranged, which in a cup-shaped valve housing is housed and the cup-shaped valve housing has a housing bottom and a housing shell.
  • a vacuum pump with such a structure has become known.
  • air is sucked out of a vacuum space, for example a brake booster, whereby the suction space inside the vacuum pump is formed by vane cells.
  • the vacuum pump is equipped with a suction check valve, which is arranged in a pump housing breakthrough.
  • This suction-check valve is sleeve-like and has a cup-shaped valve housing with a housing shell and a housing bottom, wherein the housing bottom is inserted into the pump housing of the vacuum pump.
  • the sealing of the suction check valve in the pump housing breakthrough takes place for example by means of sealing elements, for example O-rings.
  • a holding body is used in the housing shell of the suction check valve, which serves to hold the valve body.
  • the invention has for its object to provide a vacuum pump, in particular a suction check valve, which or which is easy to manufacture and can be easily maintained.
  • the invention thus relates to a vacuum pump or a suction check valve, wherein the housing bottom is formed as a separate component, in particular as a holding body for the valve body. During assembly, the housing bottom is equipped with the appropriate valve body and connected to the housing shell.
  • the housing bottom is releasably connectable to the housing shell.
  • both the assembly and disassembly is considerably simplified by the housing bottom is clipped onto the housing shell.
  • an automated assembly is possible.
  • the housing shell has at its, the housing bottom receiving free end a flange.
  • This flange is integrally formed on the housing shell and thus can absorb high forces.
  • the flange In order to fix the housing bottom in any rotational position on the housing shell, the flange is formed circumferentially. Thus, it requires no special orientation of the housing bottom in a predetermined rotational position.
  • a simple and easily automated to be performed Verclipsung by pressing the housing bottom to the housing shell is inventively achieved in that the housing bottom at your, the housing shell end facing at least two, the flange engaging fingers.
  • the fingers are evenly distributed over the circumference arranged on the housing bottom.
  • An optimal hold is achieved by the fingers engage behind the flange.
  • the fingers protrude parallel to the longitudinal axis of the suction check valve from the housing bottom and have a section extending radially away from the center of the housing bottom. In this way, the fingers are resilient in both the radial and axial directions.
  • the fingers have radially inwardly projecting latching hooks. This latching hook engages behind the flange and abuts against it with prestressing.
  • Figure 1 is a side view of a suction check valve, which is inserted into a suggestively illustrated housing of a vacuum pump;
  • Figure 2 is an enlarged exploded view of the suction check valve of Figure 1;
  • FIG. 3 shows a further exploded view of the suction check valve according to FIG. 1.
  • FIG. 1 shows an indication of a pump housing, designated as a whole by 10, of a vacuum pump 12, where 14 denotes the inner peripheral surface of a suction chamber 16.
  • a suction check valve 24 is used, on whose free end 26 a (not shown) suction hose can be pushed.
  • the suction check valve 24 has a valve housing 28, which is cup-shaped and is essentially formed by a housing shell 30 and a housing bottom 32.
  • the housing shell 30 has a housing bottom 32 facing free end 34, to which the housing bottom 32 is attached.
  • the suction check valve 24 is provided with a circumferential groove 36.
  • an elastic valve body 40 is still shown, which is arranged between the housing shell 30 and the housing bottom 32 and is held by the housing shell 30.
  • the embodiment of the housing bottom 32 can be seen, which has a total of six fingers 42 which are arranged radially around the center of the housing bottom 32.
  • the fingers 42 have a radially extending first portion 44 and a parallel to the longitudinal axis 46 of the suction check valve 24 extending second portion 48, which ends in latching hook 50.
  • These snap hooks 50 engage behind mounted suction check valve 24 has a radially projecting shoulder 52 of a flange 54 which is formed by the free end 34. This shoulder 52 completely turns around, so that the housing bottom 32 can be clipped in any rotational position.
  • the apertures 56 between the fingers 42 serve to pass the fluid which undergoes no directional change, i. in the direction of the longitudinal axis 46, the housing bottom 32 can flow through.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention relates to a vacuum pump, in particular a vane pump, having a pump housing in which a suction chamber is provided, and having a pump housing aperture which opens into the suction chamber, wherein in the pump housing aperture there is arranged a suction check valve which opens into the atmosphere or into an external vacuum chamber, which suction check valve is accommodated in a pot-shaped valve housing, and the pot-shaped valve housing has a housing base and a housing shell, wherein the housing base can be connected to the housing shell and the housing base can be clipped onto the housing shell.

Description

  • Titel: VakuumpumpeTitle: Vacuum pump
  • Beschreibungdescription
  • Die Erfindung betrifft eine Vakuumpumpe, insbesondere eine Flügelzellenpumpe, mit einem Pumpengehäuse, in welchem ein Saugraum vorgesehen ist, und einem in den Saugraum einmündenden Pumpengehäusedurchbruch, wobei im Pumpengehäusedurchbruch ein ins Freie oder in einen externen Unterdruckraum mündendes Saug-Rückschlagventil angeordnet ist, welches in einem topförmigen Ventilgehäuse untergebracht ist und das topfförmige Ventilgehäuse einen Gehäuseboden und einen Gehäusemantel aufweist.The invention relates to a vacuum pump, in particular a vane pump, with a pump housing, in which a suction chamber is provided, and an opening into the suction pump housing breakthrough, wherein in the pump housing opening into the open or in an external vacuum chamber opening suction check valve is arranged, which in a cup-shaped valve housing is housed and the cup-shaped valve housing has a housing bottom and a housing shell.
  • Aus der WO 2008/009251 A1 ist eine Vakuumpumpe mit einem derartigen Aufbau bekannt geworden. Mit dieser Vakuumpumpe wird Luft aus einem Unterdruckraum, zum Beispiel einem Bremskraftverstärker, abgesaugt, wobei der Saugraum innerhalb der Vakuumpumpe von Flügelzellen gebildet wird. Um eine Rückströmung zu verhindern, ist die Vakuumpumpe mit einem Saug-Rückschlagventil ausgestattet, welches in einem Pumpengehäusedurchbruch angeordnet ist. Dieses Saug-Rückschlagventil ist hülsenartig ausgebildet und besitzt ein topfförmiges Ventilgehäuse mit einem Gehäusemantel und einem Gehäuseboden, wobei der Gehäuseboden in das Pumpengehäuse der Vakuumpumpe eingesetzt ist. Auf das freie Ende des Saug-Rückschlagventils, welches aus dem Pumpengehäuse der Vakuumpumpe herausragt, wird zum Beispiel ein Unterdruckschlauch aufgeschoben. Die Abdichtung des Saug-Rückschlagventils im Pumpengehäusedurchbruch erfolgt zum Beispiel mittels Dichtungselementen, zum Beispiel O-Ringen. Bei der oben genannten bekannten Vakuumpumpe ist in den Gehäusemantel des Saug-Rückschlagventils ein Haltekörper eingesetzt, welcher zur Halterung des Ventilkörpers dient.From WO 2008/009251 A1 a vacuum pump with such a structure has become known. With this vacuum pump, air is sucked out of a vacuum space, for example a brake booster, whereby the suction space inside the vacuum pump is formed by vane cells. In order to prevent backflow, the vacuum pump is equipped with a suction check valve, which is arranged in a pump housing breakthrough. This suction-check valve is sleeve-like and has a cup-shaped valve housing with a housing shell and a housing bottom, wherein the housing bottom is inserted into the pump housing of the vacuum pump. On the free end of the suction check valve, which protrudes from the pump housing of the vacuum pump, for example, a vacuum hose is pushed. The sealing of the suction check valve in the pump housing breakthrough takes place for example by means of sealing elements, for example O-rings. In the above known vacuum pump, a holding body is used in the housing shell of the suction check valve, which serves to hold the valve body.
  • Der Erfindung liegt die Aufgabe zugrunde, eine Vakuumpumpe, insbesondere ein Saug-Rückschlagventil, bereitzustellen, welche beziehungsweise welches einfach herstellbar ist und problemlos gewartet werden kann.The invention has for its object to provide a vacuum pump, in particular a suction check valve, which or which is easy to manufacture and can be easily maintained.
  • Diese Aufgabe wird mit einer Vakuumpumpe der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass der Gehäuseboden mit dem Gehäusemantel verbindbar ist.This object is achieved with a vacuum pump of the type mentioned according to the invention in that the housing bottom is connectable to the housing shell.
  • Die Erfindung betrifft also eine Vakuumpumpe beziehungsweise ein Saug-Rückschlagventil, bei welchem der Gehäuseboden als separates Bauteil, insbesondere als Haltekörper für den Ventilkörper, ausgebildet ist. Bei der Montage wird der Gehäuseboden mit dem passenden Ventilkörper bestückt und mit dem Gehäusemantel verbunden.The invention thus relates to a vacuum pump or a suction check valve, wherein the housing bottom is formed as a separate component, in particular as a holding body for the valve body. During assembly, the housing bottom is equipped with the appropriate valve body and connected to the housing shell.
  • Um Reparaturen oder Inspektionen zu vereinfachen, ist der Gehäuseboden mit dem Gehäusemantel lösbar verbindbar. Dabei wird sowohl die Montage als auch die Demontage wesentlich vereinfacht, indem der Gehäuseboden auf den Gehäusemantel aufclipsbar ist. Somit ist auch eine automatisierte Montage möglich.To simplify repairs or inspections, the housing bottom is releasably connectable to the housing shell. In this case, both the assembly and disassembly is considerably simplified by the housing bottom is clipped onto the housing shell. Thus, an automated assembly is possible.
  • Um den Gehäuseboden auf einfache Weise befestigen zu können, weist der Gehäusemantel an seinem, den Gehäuseboden aufnehmenden freien Ende einen Flansch auf. Dieser Flansch ist einstückig am Gehäusemantel angeformt und kann somit hohe Kräfte aufnehmen.In order to fasten the housing bottom in a simple manner, the housing shell has at its, the housing bottom receiving free end a flange. This flange is integrally formed on the housing shell and thus can absorb high forces.
  • Um den Gehäuseboden in jeder Drehstellung am Gehäusemantel fixieren zu können, ist der Flansch umlaufend ausgebildet ist. Somit bedarf es keiner speziellen Ausrichtung des Gehäusebodens in eine vorgegebene Drehlage.In order to fix the housing bottom in any rotational position on the housing shell, the flange is formed circumferentially. Thus, it requires no special orientation of the housing bottom in a predetermined rotational position.
  • Eine einfache und problemlos auch automatisiert durchzuführende Verclipsung durch Aufdrücken des Gehäusebodens auf den Gehäusemantel wird erfindungsgemäß dadurch erreicht, dass der Gehäuseboden an deinem, dem Gehäusemantel zugewandten Ende wenigstens zwei, am Flansch angreifende Finger aufweist. Bevorzugt sind die Finger gleichmäßig über dem Umfang verteilt am Gehäuseboden angeordnet. Ein optimaler Halt erfolgt dadurch, dass die Finger den Flansch hintergreifen.A simple and easily automated to be performed Verclipsung by pressing the housing bottom to the housing shell is inventively achieved in that the housing bottom at your, the housing shell end facing at least two, the flange engaging fingers. Preferably, the fingers are evenly distributed over the circumference arranged on the housing bottom. An optimal hold is achieved by the fingers engage behind the flange.
  • Dabei ragen bei einem bevorzugen Ausführungsbeispiel die Finger parallel zur Längsachse des Saug-Rückschlagventils vom Gehäuseboden ab und weisen einen sich radial vom Zentrum des Gehäusebodens weg erstreckenden Abschnitt auf. Auf diese Weise sind die Finger sowohl in radialer als auch in axialer Richtung elastisch nachgiebig.In this case, in a preferred exemplary embodiment, the fingers protrude parallel to the longitudinal axis of the suction check valve from the housing bottom and have a section extending radially away from the center of the housing bottom. In this way, the fingers are resilient in both the radial and axial directions.
  • Bei einer Weiterbildung ist vorgesehen, dass die Finger radial nach innen abragende Rasthaken aufweisen. Dieser Rasthaken hintergreift den Flansch und liegt an diesem mit Vorspannung an.In a further development it is provided that the fingers have radially inwardly projecting latching hooks. This latching hook engages behind the flange and abuts against it with prestressing.
  • Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus den Unteransprüchen sowie der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung ein besonders bevorzugtes Ausführungsbeispiel im Einzelnen beschrieben ist. Dabei können die in der Zeichnung dargestellten sowie in der Beschreibung und in den Ansprüchen erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the subclaims and the following description in which, with reference to the drawing, a particularly preferred embodiment is described in detail. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.
  • In der Zeichnung zeigen:In the drawing show:
  • Figur 1 eine Seitenansicht eines Saug-Rückschlagventils, welches in ein andeutungsweise dargestelltes Gehäuse einer Vakuumpumpe eingesetzt ist;Figure 1 is a side view of a suction check valve, which is inserted into a suggestively illustrated housing of a vacuum pump;
  • Figur 2 eine vergrößerte Explosionsdarstellung des Saug-Rückschlagventils gemäß Figur 1; undFigure 2 is an enlarged exploded view of the suction check valve of Figure 1; and
  • Figur 3 eine weitere Explosionsdarstellung des Saug-Rückschlagventils gemäß Figur 1.3 shows a further exploded view of the suction check valve according to FIG. 1.
  • Die Figur 1 zeigt andeutungsweise ein insgesamt mit 10 bezeichnetes Pumpengehäuse einer Vakuumpumpe 12, wobei mit 14 die Innenumfangsfläche eines Saugraums 16 bezeichnet ist. In diesen Saugraum 16 mündet ein Kanal 18 eines Pumpengehäusedurchbruchs 20, welcher ins Freie 22 ausmündet. In diesen Pumpengehäusedurchbruch 20 ist ein Saug-Rückschlagventil 24 eingesetzt, auf dessen freies Ende 26 ein (nicht dargestellter) Saugschlauch aufgeschoben werden kann. Das Saug-Rückschlagventil 24 besitzt ein Ventilgehäuse 28, welches topfförmig ausgebildet ist und im Wesentlichen von einem Gehäusemantel 30 und einem Gehäuseboden 32 gebildet wird. Der Gehäusemantel 30 weist ein dem Gehäuseboden 32 zugewandtes freies Ende 34 auf, an welchem der Gehäuseboden 32 befestigt ist. Zur Aufnahme eines Dichtungsring 38, insbesondere ein O-Ring, ist das Saug-Rückschlagventil 24 mit einer Umfangsnut 36 versehen. In Figur 2 ist noch ein elastischer Ventilkörper 40 dargestellt, der zwischen dem Gehäusemantel 30 und dem Gehäuseboden 32 angeordnet ist und vom Gehäusemantel 30 gehalten wird.FIG. 1 shows an indication of a pump housing, designated as a whole by 10, of a vacuum pump 12, where 14 denotes the inner peripheral surface of a suction chamber 16. In this suction chamber 16 opens a channel 18 of a pump housing opening 20, which opens into the open 22. In this pump housing opening 20, a suction check valve 24 is used, on whose free end 26 a (not shown) suction hose can be pushed. The suction check valve 24 has a valve housing 28, which is cup-shaped and is essentially formed by a housing shell 30 and a housing bottom 32. The housing shell 30 has a housing bottom 32 facing free end 34, to which the housing bottom 32 is attached. For receiving a sealing ring 38, in particular an O-ring, the suction check valve 24 is provided with a circumferential groove 36. In Figure 2, an elastic valve body 40 is still shown, which is arranged between the housing shell 30 and the housing bottom 32 and is held by the housing shell 30.
  • Insbesondere aus Figur 3 ist die Ausgestaltung des Gehäusebodens 32 erkennbar, der insgesamt sechs Finger 42 aufweist, die strahlenförmig um das Zentrum des Gehäusebodens 32 angeordnet sind. Dabei besitzen die Finger 42 einen radial verlaufenden ersten Abschnitt 44 und einen parallel zur Längsachse 46 des Saug-Rückschlagventils 24 verlaufenden zweiten Abschnitt 48, der in Rasthaken 50 endet. Diese Rasthaken 50 hintergreifen bei montiertem Saug-Rückschlagventil 24 eine radial abstehende Schulter 52 eines Flansches 54, der vom freien Ende 34 gebildet wird. Diese Schulter 52 läuft vollständig um, so dass der Gehäuseboden 32 in jeder Drehstellung aufgeclipst werden kann. Die Durchbrüche 56 zwischen den Fingern 42 dienen zum Durchleiten des Fluides, welches keine Richtungsveränderung erfährt, d.h. in Richtung der Längsachse 46 den Gehäuseboden 32 durchströmen kann.In particular, from Figure 3, the embodiment of the housing bottom 32 can be seen, which has a total of six fingers 42 which are arranged radially around the center of the housing bottom 32. In this case, the fingers 42 have a radially extending first portion 44 and a parallel to the longitudinal axis 46 of the suction check valve 24 extending second portion 48, which ends in latching hook 50. These snap hooks 50 engage behind mounted suction check valve 24 has a radially projecting shoulder 52 of a flange 54 which is formed by the free end 34. This shoulder 52 completely turns around, so that the housing bottom 32 can be clipped in any rotational position. The apertures 56 between the fingers 42 serve to pass the fluid which undergoes no directional change, i. in the direction of the longitudinal axis 46, the housing bottom 32 can flow through.

Claims (9)

  1. Vakuumpumpe (12), insbesondere Flügelzellenpumpe, mit einem Pumpengehäuse (10), in welchem ein Saugraum (16) vorgesehen ist, und einem in den Saugraum (16) einmündenden Gehäusedurchbruch (20), wobei im Pumpengehäusedurchbruch (20) ein ins Freie (22) oder in einen externen Unterdruckraum mündendes Saug-Rückschlagventil (24) angeordnet ist, welches in einem topfförmigen Ventilgehäuse (28) untergebracht ist und das topfförmige Ventilgehäuse (28) einen Gehäuseboden (32) und einen Gehäusemantel (30) aufweist, wobei der Gehäuseboden (32) mit dem Gehäusemantel (30) verbindbar ist, dadurch gekennzeichnet, dass der Gehäuseboden (32) auf den Gehäusemantel (30) aufclipsbar ist.Vacuum pump (12), in particular vane pump, with a pump housing (10), in which a suction chamber (16) is provided, and a housing opening (20) opening into the suction chamber (16), wherein in the pump housing opening (20) into the open (22 ) or in an external vacuum chamber opening suction check valve (24) is arranged, which is housed in a cup-shaped valve housing (28) and the cup-shaped valve housing (28) has a housing bottom (32) and a housing shell (30), wherein the housing bottom ( 32) is connectable to the housing shell (30), characterized in that the housing bottom (32) on the housing shell (30) can be clipped.
  2. Vakuumpumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Gehäuseboden (32) mit dem Gehäusemantel (30) lösbar verbindbar.Vacuum pump according to claim 1, characterized in that the housing bottom (32) with the housing shell (30) releasably connectable.
  3. Vakuumpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Gehäusemantel (30) an seinem, den Gehäuseboden (32) aufnehmenden freien Ende (34) einen Flansch (54) aufweist.Vacuum pump according to one of the preceding claims, characterized in that the housing casing (30) has a flange (54) at its free end (34) receiving the housing bottom (32).
  4. Vakuumpumpe nach Anspruch 3, dadurch gekennzeichnet, dass der Flansch (54) umlaufend ausgebildet ist.Vacuum pump according to claim 3, characterized in that the flange (54) is formed circumferentially.
  5. Vakuumpumpe nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Gehäuseboden (32) an seinem, dem Gehäusemantel (30) zugewandten Ende wenigstens zwei, am Flansch (54) angreifende Finger (42) aufweist.Vacuum pump according to claim 3 or 4, characterized in that the housing bottom (32) at its, the housing shell (30) facing the end of at least two, on the flange (54) engaging finger (42).
  6. Vakuumpumpe nach Anspruch 5, dadurch gekennzeichnet, dass die Finger (42) den Flansch (54) hintergreifen.Vacuum pump according to claim 5, characterized in that the fingers (42) engage behind the flange (54).
  7. Vakuumpumpe nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Finger (42) parallel zur Längsachse (46) des Saug-Rückschlagventils (24) vom Gehäuseboden (32) abragen.Vacuum pump according to claim 5 or 6, characterized in that the fingers (42) project parallel to the longitudinal axis (46) of the suction check valve (24) from the housing bottom (32).
  8. Vakuumpumpe nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Finger (42) radial nach innen abragende Rasthaken (50) aufweisen.Vacuum pump according to one of claims 5 to 7, characterized in that the fingers (42) have radially inwardly projecting latching hooks (50).
  9. Vakuumpumpe nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Finger (42) einen sich radial vom Zentrum des Gehäusebodens (32) weg erstreckenden Abschnitt (44) aufweisen.Vacuum pump according to one of claims 5 to 8, characterized in that the fingers (42) have a radially extending from the center of the housing bottom (32) extending portion (44).
EP11748624.1A 2010-08-16 2011-08-16 Vacuum pump Withdrawn EP2606236A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010039343 DE102010039343B4 (en) 2010-08-16 2010-08-16 vacuum pump
PCT/EP2011/064064 WO2012022732A2 (en) 2010-08-16 2011-08-16 Vacuum pump

Publications (1)

Publication Number Publication Date
EP2606236A2 true EP2606236A2 (en) 2013-06-26

Family

ID=44510969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11748624.1A Withdrawn EP2606236A2 (en) 2010-08-16 2011-08-16 Vacuum pump

Country Status (5)

Country Link
US (1) US8997781B2 (en)
EP (1) EP2606236A2 (en)
CN (1) CN103261764B (en)
DE (1) DE102010039343B4 (en)
WO (1) WO2012022732A2 (en)

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Also Published As

Publication number Publication date
DE102010039343B4 (en) 2012-06-14
CN103261764B (en) 2015-06-03
US8997781B2 (en) 2015-04-07
US20130139912A1 (en) 2013-06-06
WO2012022732A2 (en) 2012-02-23
DE102010039343A1 (en) 2012-02-16
WO2012022732A3 (en) 2013-03-21
CN103261764A (en) 2013-08-21

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