EP2079932A1 - Pompe à vide avec une soupape de sortie - Google Patents

Pompe à vide avec une soupape de sortie

Info

Publication number
EP2079932A1
EP2079932A1 EP07856378A EP07856378A EP2079932A1 EP 2079932 A1 EP2079932 A1 EP 2079932A1 EP 07856378 A EP07856378 A EP 07856378A EP 07856378 A EP07856378 A EP 07856378A EP 2079932 A1 EP2079932 A1 EP 2079932A1
Authority
EP
European Patent Office
Prior art keywords
vacuum pump
sealing body
pump according
air outlet
outlet opening
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Withdrawn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
EP07856378A
Other languages
German (de)
English (en)
Inventor
Dirk Ehrenfeld
Willi Schneider
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 Hydromechanic 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 Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP2079932A1 publication Critical patent/EP2079932A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04C18/3441—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • F04C18/3441—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04C29/128—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 of the elastic type, e.g. reed valves
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

Definitions

  • the invention relates to a vacuum pump with a cup-shaped housing, a rotor rotatably mounted eccentrically in the housing, a rotatably mounted in the rotor orthogonal to the axis of rotation, which abuts with its wing tips on a working space bounding inner peripheral surface of the housing while the working space in a suction chamber and a Pressure chamber divided, and the suction chamber with an air inlet opening and the pressure chamber with a
  • Air outlet opening are provided, wherein the air outlet opening is provided with an outlet valve, and the outlet valve has a directly resting on the air outlet opening sealing body.
  • Vacuum pumps with such a structure are known for example from DE 10 2004 034 926 Bl. They usually have a housing in which a rotor is rotatably mounted, wherein the rotor is located in a working space. Such vacuum pumps are used inter alia in vehicles, where, for example, the motor of the motor vehicle rotates the rotor. These vacuum pumps are lubricated with oil, which also serves to seal the sealing gap between the wing and working space in order to achieve high efficiency.
  • an outlet valve is provided, which is designed in the manner of a leaf spring.
  • This leaf spring presses on the outside of the air outlet and closes it.
  • the leaf spring can be bent over the prevailing pressure in the pressure chamber to the outside. As a result, the compressed air is expelled from the pressure space in the pressure line.
  • Such a device is for Example from DE 40 19 854 B4 known. With this vacuum pump it has been found that with leaf springs closed air outlet openings, which are not completely covered when sweeping the wing, relatively high losses occur.
  • the invention is therefore based on the object to provide a vacuum pump, wherein it is ensured that the air compressed in the pressure chamber is completely discharged into the pressure line and is not transferred to the pressure chamber located behind the wing.
  • the sealing body is not clamped on one side and therefore cantilevered as in the prior art, but is fixed in the direction of rotation of the rotor both at the front end and at the rear end of the air outlet opening on the housing.
  • This type of attachment has the significant advantage that when blowing off the valve does not fully swing open but only the Area is available, which is required to pass through the flowing volume. Therefore, no air can flow into the subsequent, ie behind the wing pressure chamber. This means that the compressed air in the pressure chamber, the sealing surface in this section imprints, in which there is the overpressure.
  • the sealing body is sufficiently elastic that it does not lift off over the entire length of the air outlet opening, but only in the section in which there is a sufficiently large overpressure. However, this is always in the direction of rotation of the rotor in front of the wing.
  • a sealing element consisting of spring steel always lifts from the sealing seat over the entire length and not in sections.
  • the sealing body is elastic, in particular rubber-elastic.
  • an optimal nestling and sealing of sealing body is achieved at the sealing surface.
  • the above-described opening advantageously assists you in that the material of the sealing body is stretchable.
  • the outlet valve according to the invention is bent in the circumferential direction as well as the known from the prior art leaf spring and has in particular a C or kidney-shaped.
  • the sealing body bears against the side of the air outlet opening facing away from the pressure chamber. This will ddas Exhaust valve and in particular the sealing body easily accessible for repair and maintenance.
  • the outlet valve on a sealing body cross-supporting body.
  • This support body serves not only for fixing and fixing the sealing body to the housing but also for adjusting the opening time of the valve, e.g. is determined by more or less far reaching the tension of the sealing body.
  • the support body lies substantially in the areas on the sealing body, in which the sealing body bears against the housing.
  • the sealing body remains flexible in the region of the opening.
  • the support body in the region of the air outlet opening at a distance from the sealing body, or the support body is recessed in this area.
  • the sealing body remains movable there and can stand out from the housing and in particular from the edge of the opening.
  • a variant provides that the sealing body between the housing and the support body is arranged, in particular firmly clamped. This represents a simple way of attachment.
  • sealing body is vulcanized onto the support body.
  • supporting body and sealing body can be handled together, i. attached or replaced in case of repair.
  • the support body is recessed open edge in the region of the air outlet opening and the sealing body is vulcanized to the edge of the recesses.
  • the support body and the sealing body are formed as a one-piece valve body, so that they, as already mentioned, can be handled together.
  • valve body in the region of the air outlet opening for forming the sealing body has a smaller material thickness than in the adjacent areas.
  • the material thickness is so low that the area is elastically deformable.
  • the sealing body consists of plastic, in particular a thermoplastic or elastomer.
  • Figure 1 is a vacuum pump with removed housing cover
  • FIG. 2 shows the rear side of the vacuum pump, the drive of the rotor and the outlet valve
  • Figure 3 is a perspective view of a valve body
  • Figure 4 is a perspective view of a portion of the valve body in the working position
  • FIG. 5 shows a section V - V according to FIG. 2 through the outlet valve in its open position.
  • a vacuum pump in which the housing 12 is shown without housing cover.
  • the housing 12 has a suction port 14, which opens into an interior 16.
  • a generally designated 18 rotor in which a wing 20 is mounted orthogonal to the axis of rotation 21 slidably.
  • the rotor 18 has a rotor housing 24, with which it bears against an inner circumferential surface 22 of the working space 30.
  • the rotor 18 passes through the housing 12, in particular a bottom 26 of the interior 18, via a drive opening 28, so that it protrudes from the housing 12 on the rear side so that it can be rotated by means of a drive (not shown) on a coupling.
  • the interior 16 is divided by the wing 20 into a suction chamber 32 and a pressure chamber 34.
  • the direction of rotation of the rotor 20 is indicated by an arrow 36.
  • the in the pressure chamber 34 located and arranged in the bottom 26 of the housing 12 air outlet opening 38 is partially visible. This air outlet opening 38 could also be provided in the peripheral surface 22.
  • FIG. 2 shows the rear side of the housing 12 of the vacuum pump 10 and shows the outlet valve 40 located behind the air outlet opening 38.
  • a second outlet valve 42 can be seen. If the rotor 18 rotates in the direction indicated by the arrow 36 in FIG. 1, ie in the normal working direction, then air is drawn in through the suction connection 14 and expelled through the air outlet opening 38. In addition, through the air outlet 38 Lubricating oil expelled. If the rotor 18 rotates in the opposite direction, then any lubricating oil must also be able to be ejected, which takes place via the other outlet opening with the outlet valve 42.
  • Both outlet valves 40 and 42 have the same structure and they can either each have a separate valve body or a common valve body 44. This valve body 44 is fixed by means of screws 6 on the housing 12.
  • FIGS 3 and 4 show the valve body 44 in an enlarged view. It can be seen that the valve body 44 has a C- or kidney-shaped shape and is partially offset on the radially inner longitudinal side 46.
  • the valve body 44 has a sealing body 48 and a seated on the sealing body 48 supporting body 50.
  • the above-mentioned paragraph is formed in that the support body 50 is provided with two recesses 52 which are open-edge in the direction of the longitudinal side 46. It can be seen that the sealing body 48 extends below the recesses 52.
  • This sealing body 48 consists of an elastic, in particular rubber-elastic material, preferably of plastic, in particular a thermoplastic or elastomer. In any case, the sealing body 48 is stretchable.
  • the valve body 44 is, as already mentioned, directly on the outlet openings 38 such that the sealing body 48 closes these openings.
  • the sealing body 48 in the recess 52 of the corresponding outlet valve 40 or 42 lifts off from the sealing seat, which is illustrated in FIG. Due to the elastic configuration of the sealing body 48, however, this lifts only in the narrow area within the recess 52, in which it is lifted by the internal pressure. In the adjacent areas of the sealing body 48 is still at the sealing seat. This prevents air from flowing into the working space 30.
  • the sealing body 48 is pressed in any case at the front and at the rear end of the recess 52 on the sealing seat and that the exhaust valve opens radially inward.
  • FIG. 5 shows a section V - V according to FIG. 2 with open outlet valve 40, ie.
  • open outlet valve 40 ie.
  • the air outlet opening 38 is seconded in the inner peripheral surface 22 of the housing 12 in the recess 52.

Landscapes

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

Abstract

L'invention concerne une pompe à vide comprenant : un boîtier en forme de pot ; un rotor monté excentriquement à rotation dans le boîtier ; et une ailette, qui est montée à translation dans le rotor orthogonalement à l'axe de rotation et qui, par au moins un de ses bouts d'ailette, s'applique contre une face circonférentielle intérieure du boîtier délimitant une chambre de travail et divise ainsi la chambre de travail en une chambre d'aspiration et une chambre de refoulement. La chambre d'aspiration est pourvue d'une ouverture d'entrée d'air et la chambre de refoulement d'une ouverture de sortie d'air. L'ouverture de sortie d'air est pourvue d'une soupape de sortie (40), et la soupape de sortie présente un corps d'étanchéité (48) reposant directement sur l'ouverture de sortie d'air (38). Le corps d'étanchéité est fixé sur l'ouverture de sortie d'air à l'extrémité avant et à l'extrémité arrière de celle-ci, considéré dans la direction de rotation (36) du rotor, et s'applique en permanence contre celle-ci.
EP07856378A 2007-01-04 2007-12-05 Pompe à vide avec une soupape de sortie Withdrawn EP2079932A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202007003155 2007-01-04
DE102007010729A DE102007010729B3 (de) 2007-01-04 2007-02-26 Vakuumpumpe
PCT/EP2007/010543 WO2008080492A1 (fr) 2007-01-04 2007-12-05 Pompe à vide avec une soupape de sortie

Publications (1)

Publication Number Publication Date
EP2079932A1 true EP2079932A1 (fr) 2009-07-22

Family

ID=39198654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07856378A Withdrawn EP2079932A1 (fr) 2007-01-04 2007-12-05 Pompe à vide avec une soupape de sortie

Country Status (3)

Country Link
EP (1) EP2079932A1 (fr)
DE (1) DE102007010729B3 (fr)
WO (1) WO2008080492A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038132B4 (de) 2009-08-12 2015-12-24 Joma-Polytec Gmbh Vakuumpumpe
DE102013104375A1 (de) * 2013-04-30 2014-10-30 Hella Kgaa Hueck & Co. Vakuumpumpe
US11268514B2 (en) 2015-11-02 2022-03-08 Pierburg Pump Technology Gmbh Motor vehicle vacuum pump
JP6613222B2 (ja) 2016-11-03 2019-11-27 大豊工業株式会社 ベーンポンプ
JP6534647B2 (ja) 2016-11-03 2019-06-26 大豊工業株式会社 ベーンポンプ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1667143A (en) * 1927-07-11 1928-04-24 Wayne Co Discharge valve for ice-machine compressors
JPS555428A (en) * 1978-06-22 1980-01-16 Nakamura Suikan:Kk Water ring pump of side-air-port type
DE8518157U1 (de) * 1985-06-22 1986-10-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Flügelzellenvakuumpumpe
DE4019854B4 (de) * 1989-07-10 2004-09-16 Saurer Gmbh & Co. Kg Flügelzellen-Vakuumpumpe
EP1563190A2 (fr) * 2002-11-13 2005-08-17 LuK Automobiltechnik GmbH & Co. KG Pompe a vide
US7762796B2 (en) * 2003-07-23 2010-07-27 Hargraves Technology Corporation Pump valve with controlled stroke

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008080492A1 *

Also Published As

Publication number Publication date
DE102007010729B3 (de) 2008-04-24
WO2008080492A1 (fr) 2008-07-10

Similar Documents

Publication Publication Date Title
EP1766239B1 (fr) Pompe a vide a une ailette
EP1219833B1 (fr) Pompe à membrane
DE102010044898A1 (de) Vakuumpumpe mit Lüftungseinrichtung
DE202012013619U1 (de) Pumpe, insbesondere Pneumatikpumpe
WO1992000449A1 (fr) Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir
EP1890040B1 (fr) Pompe à vide
EP2122176B1 (fr) Pompe à vide
EP2005004B1 (fr) Système de compresseur comportant une unité de soupape dans la zone d'aspiration
EP2079932A1 (fr) Pompe à vide avec une soupape de sortie
EP1766238B1 (fr) Pompe a vide a une ailette
WO2016156062A1 (fr) Pompe volumétrique et soupape de surpression pouvant être utilisée comprenant une membrane de soupape élastique
DE102007006716A1 (de) Verdrängerpumpe
WO2007048382A1 (fr) Pompe
DE102006061706A1 (de) Flügelzellenpumpe
WO2010025799A2 (fr) Pompe à vide
DE4428410C2 (de) Kompakte Regeleinheit für eine Flügelzellenpumpe
DE102008025186A1 (de) Drehkolbenmaschine
DE102009037277B4 (de) Regelbare Vakuumpumpe
DE102007001593B4 (de) Vakuumpumpe
EP2435704B1 (fr) Pompe, en particulier pompe à palettes
EP1375919B1 (fr) Compresseur, en particulier pour un système à resort pneumatique pour un véhicule
EP3470624A1 (fr) Pompe rotative
DE3929745A1 (de) Fluegelzellenkompressor
DE102006009186A1 (de) Pumpe
DE2936971A1 (de) Vakuumpumpe

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE FR GB IT LI

17P Request for examination filed

Effective date: 20090313

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHNEIDER, WILLI

Inventor name: EHRENFELD, DIRK

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: JOMA-POLYTEC GMBH

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120703