EP2122176B1 - Pompe à vide - Google Patents

Pompe à vide Download PDF

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Publication number
EP2122176B1
EP2122176B1 EP08701036A EP08701036A EP2122176B1 EP 2122176 B1 EP2122176 B1 EP 2122176B1 EP 08701036 A EP08701036 A EP 08701036A EP 08701036 A EP08701036 A EP 08701036A EP 2122176 B1 EP2122176 B1 EP 2122176B1
Authority
EP
European Patent Office
Prior art keywords
leaf spring
vacuum pump
housing
spring
blade
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.)
Active
Application number
EP08701036A
Other languages
German (de)
English (en)
Other versions
EP2122176A1 (fr
Inventor
Martin Thoma
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
Application filed by Joma Polytec GmbH filed Critical Joma Polytec GmbH
Publication of EP2122176A1 publication Critical patent/EP2122176A1/fr
Application granted granted Critical
Publication of EP2122176B1 publication Critical patent/EP2122176B1/fr
Active 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
    • 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 outlet valve has a leaf spring which does not consist, as in the prior art, of a leaf spring having a constant spring constant. Rather, the leaf spring according to the invention has a starting from the clamping point changing spring constant. This means that the free end of the leaf spring can be lifted off the outlet opening with a relatively small force, whereas for the further lifting of the leaf spring the force required for this increases disproportionately. As a result, the advantage is achieved that only the portion of the leaf spring is lifted from the outlet opening, which is required for the outlet of the compressed fluid. Too much opening of the exhaust valve is due to the clamping of the Leaf spring towards growing force required to lift the leaf spring effectively prevented.
  • the leaf spring is a layered leaf spring.
  • a layered leaf spring two or more sheets are stacked with the leaves having stepped lengths. The leaves are attached to the clamping point and extend, with different lengths, different distances away from this. As a result, the rigidity of the free end of the leaf spring is selectively increased in the direction of the clamping point. In addition, the friction between the blades can be used to control the opening of the valve.
  • a variant according to the invention provides that the thickness of the individual sheets is equal or unequal. Especially with uneven thick leaves, the thickness can be greater for shorter leaves.
  • the leaf spring made of metal or plastic.
  • this can also be composed of a combination of plastic and metal leaves.
  • the long leaves are made of plastic, whereas the short leaves are made of metal.

Claims (6)

  1. Pompe à vide (10), comportant un carter (12) en forme de pot, un rotor (18), monté à excentrique de manière rotative dans le carter (12), une pale (20), qui est montée dans le rotor (18) de manière mobile orthogonalement à l'axe de rotation (21) et qui est en appui avec ses extrémités contre une surface périphérique intérieure (22), délimitant une chambre de travail (30), du carter (12) et, en l'occurrence, divise la chambre de travail (30) en une chambre d'aspiration (32) et une chambre de pression (34), et la chambre d'aspiration (32) est munie d'un orifice d'admission d'air (14) et la chambre de pression (34) est munie d'un orifice de sortie d'air (38), l'orifice d'admission d'air (38) étant muni d'une soupape de sortie (40) et ladite soupape de sortie (40) comportant un ressort à lames (44) serré sur un côté et formant un organe de fermeture (46), la courbe caractéristique de ressort du ressort à lames (44) variant depuis la zone de serrage (50) vers l'extrémité libre (62), le ressort à lames (44) étant courbé dans la surface d'étanchéité sous forme réniforme ou sous forme de cercle partiel, caractérisée en ce que le ressort à lames (44) est un ressort à lames (44) stratifié avec des lames (52, 54, 56, 58) individuelles, lesdites lames (52, 54, 56, 58) ayant des longueurs étagées et étant courbées en direction de la lame (52, 54, 56) respectivement plus longue.
  2. Pompe à vide selon la revendication 1, caractérisée en ce que le ressort à lames (44) est un ressort rectangulaire, un ressort triangulaire ou un ressort trapézoïdal.
  3. Pompe à vide selon l'une quelconque des revendications précédentes, caractérisée en ce que le ressort à lames (44) possède une épaisseur constante ou décroissante en partant de la zone de serrage (50).
  4. Pompe à vide selon l'une quelconque des revendications précédentes, caractérisée en ce que l'épaisseur des différentes lames (52, 54, 56, 58) est identique ou différente.
  5. Pompe à vide selon l'une quelconque des revendications précédentes, caractérisée en ce que le ressort à lames (44) est réalisé en métal ou en matière plastique ou dans une combinaison de ceux-ci.
  6. Pompe à vide selon l'une quelconque des revendications précédentes, caractérisée en ce que la soupape de sortie (40) avec le ressort à lames (44) se situe dans le fond (26) ou dans la paroi périphérique (22) du carter (12).
EP08701036A 2007-04-12 2008-01-09 Pompe à vide Active EP2122176B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007018247A DE102007018247A1 (de) 2007-04-12 2007-04-12 Vakuumpumpe
PCT/EP2008/000103 WO2008125155A1 (fr) 2007-04-12 2008-01-09 Pompe à vide

Publications (2)

Publication Number Publication Date
EP2122176A1 EP2122176A1 (fr) 2009-11-25
EP2122176B1 true EP2122176B1 (fr) 2011-09-14

Family

ID=39204763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08701036A Active EP2122176B1 (fr) 2007-04-12 2008-01-09 Pompe à vide

Country Status (4)

Country Link
EP (1) EP2122176B1 (fr)
AT (1) ATE524655T1 (fr)
DE (1) DE102007018247A1 (fr)
WO (1) WO2008125155A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009016048B4 (de) * 2009-04-02 2018-05-30 Bayerische Motoren Werke Aktiengesellschaft Pumpe für eine Kraftfahrzeug-Brennkraftmaschine sowie Kraftfahrzeug-Brennkraftmaschine mit Pumpe
DE112010002592A5 (de) * 2009-06-17 2012-11-29 Ixetic Hückeswagen Gmbh Auslassventil aus verschiedenen materialschichten für eine vakuumpumpe
DE102010026032A1 (de) * 2010-07-03 2012-01-05 Mahle International Gmbh Flatterventil und Drehschieberpumpe
DE102013104375A1 (de) * 2013-04-30 2014-10-30 Hella Kgaa Hueck & Co. Vakuumpumpe
DE102015118022A1 (de) * 2015-10-22 2017-04-27 Pfeiffer Vacuum Gmbh Rotationsverdrängervakuumpumpe
DE102016210102A1 (de) * 2016-06-08 2017-12-14 Mahle International Gmbh Rückschlagventil für eine Vakuumpumpe
DE102017123695A1 (de) * 2017-10-11 2019-04-11 Schwäbische Hüttenwerke Automotive GmbH Rotationspumpe
CN112901483A (zh) * 2021-04-05 2021-06-04 杨文通 一种缸体及使用了该缸体的泵/马达/空压机/内燃机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US939549A (en) * 1909-06-03 1909-11-09 Frederick C Reineking Reed air-intake regulator for carbureters.
US2689552A (en) * 1950-09-11 1954-09-21 Elmer C Kiekhaefer Reed valve for internal-combustion engines
JPS608577A (ja) * 1983-06-29 1985-01-17 Hitachi Ltd 圧縮機用吐出弁構造
DE4019854B4 (de) 1989-07-10 2004-09-16 Saurer Gmbh & Co. Kg Flügelzellen-Vakuumpumpe
US5421368A (en) * 1994-09-02 1995-06-06 Carrier Corporation Reed valve with tapered leg and dual radius valve stop
EP1890040B1 (fr) * 2002-11-13 2012-06-27 ixetic Hückeswagen GmbH Pompe à vide
DE102004034926B3 (de) 2004-07-09 2005-12-29 Joma-Hydromechanic Gmbh Einflügelvakuumpumpe

Also Published As

Publication number Publication date
DE102007018247A1 (de) 2008-10-16
EP2122176A1 (fr) 2009-11-25
ATE524655T1 (de) 2011-09-15
WO2008125155A1 (fr) 2008-10-23

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