EP3252312A1 - Soupape d'échappement/anti-retour pour une pompe à vide - Google Patents

Soupape d'échappement/anti-retour pour une pompe à vide Download PDF

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Publication number
EP3252312A1
EP3252312A1 EP17166594.6A EP17166594A EP3252312A1 EP 3252312 A1 EP3252312 A1 EP 3252312A1 EP 17166594 A EP17166594 A EP 17166594A EP 3252312 A1 EP3252312 A1 EP 3252312A1
Authority
EP
European Patent Office
Prior art keywords
valve
check
valve body
opening
housing
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Withdrawn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
EP17166594.6A
Other languages
German (de)
English (en)
Inventor
Torsten Klein
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.)
Mahle International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP3252312A1 publication Critical patent/EP3252312A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • 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
    • 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
    • F04C29/06—Silencing
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/13—Noise

Definitions

  • the present invention relates to a check / discharge valve for a vacuum pump, comprising a housing and a valve body according to the preamble of claim 1.
  • the invention also relates to a vacuum pump with at least one such check / exhaust valve.
  • a generic check / outlet valve for a vacuum pump with a housing a valve body and a hold-down is known, wherein the valve body with closed check / exhaust valve covers a valve opening.
  • the hold-down limits the opening of the valve body.
  • a motor vehicle vacuum pump is known with an outlet valve designed as a check valve in a partition, through which the compressed gas can escape from a pumping space into an outlet space.
  • a valve opening of the check valve is closed by a valve body, wherein a plurality of microns are arranged in a valve seat of the valve opening, which are oriented in the lateral direction and which produce a kind of drainage in the closing plane of the check valve, in the interface between the valve seat and the corresponding part of the valve body when opening the exhaust valve, a faster pressure equalization can be done.
  • a vacuum generator for a compatible medium with a pump housing in which an outlet opening for the compatible medium is provided.
  • the outlet opening is closed by a valve body.
  • the present invention therefore addresses the problem of providing for a check / exhaust valve of the generic type an improved or at least one alternative embodiment which has a positive effect on acoustics and power loss.
  • the present invention is based on the general idea, for the first time at an edge of a valve opening of a check / exhaust valve for a vacuum pump to provide a blind hole / pin-like recess, which has no connection to the valve opening or external environment of the vacuum pump / vacuum pump (UDP) itself and thereby fills with oil during operation of the check / exhaust valve and thus forms a small pad (oil pad), on which a valve body is damped and thus noise reduced can put on.
  • "Blind-like / pin-like” may in this case be understood in particular in the sense of a hollow-cylindrical recess which can be produced for example by means of drilling or milling.
  • the check / exhaust valve according to the invention has in a known manner a housing and the valve body described above, which covers the valve opening and closes in the closed state.
  • the valve body is connected to a first side of the valve opening with the housing of the check / exhaust valve, for example, riveted or screwed.
  • at least one blind hole-like / pin-like recess is arranged in the housing on one of the first side opposite the second side of the valve opening, which has no connection to the valve opening / vacuum pump environment and which is covered by the valve body in its closed state.
  • At least one blind hole / pin-like recess thus accumulates during operation of the check / exhaust valve or during operation of the vacuum pump oil and forms a convex oil pad / cushion on which the valve body attenuated when closing the check / exhaust valve and thus much quieter can open.
  • the inventively provided at least one blind hole / pin-like recess is doing no, the valve body bypass immediately, so that associated with the check / exhaust valve according to the invention no loss of power, but a significant reduction in noise, which with the check / exhaust valve according to the invention both performance-optimized as well as noise-reduced check / exhaust valve can be offered.
  • the valve body is fastened with a screw on the housing, whereby a comparatively simple and thus cost-effective installation of the check / exhaust valve is possible.
  • a hold-down which limits an opening movement of the valve body or even pushes this in its closed position on the valve opening.
  • At least two, three or five blind hole / pin-like recesses are disposed on the first side opposite the second opening, each having no connection to the valve opening or Vakuumpumpenum poverty and covered by the valve body at least in its closed state are.
  • the individual blind hole / pin-like recesses can be made smaller in terms of their diameter or their depth, creating a storage of the valve body is made possible on several oil pads.
  • the at least one blind hole / pin-like recess is designed as a blind hole and thereby comparatively simple and inexpensive, but still extremely precise, produced.
  • a depth t of the at least one recess is between 1.5 mm ⁇ t ⁇ 3 mm, while a diameter d of such a recess is between 1.0 mm ⁇ t ⁇ 2.5 mm.
  • valve body and / or the hold-down are / is made of a spring steel strip.
  • the production of the valve body or the hold-down for example, by a simple punching and forming particularly simple, wherein the hold-down or the valve body can of course also be prepared by water jet cutting, laser cutting or nibbling.
  • the hold-down or the valve body can of course also be prepared by water jet cutting, laser cutting or nibbling.
  • At least one further recess is provided in the housing between the valve opening and the screw, which is at least partially covered by the valve body.
  • a recess is arranged below the valve body, in which particles can be collected, so that a closing movement of the valve body obstructing particle deposition between the housing and the valve body can be preferably completely prevented.
  • Such a particle accumulation or deposition could in the long term lead to a no longer complete closing of the check valve / outlet valve, since the valve body no longer lies completely on the valve opening and thereby closes, provided that dirt particles are deposited between the housing and the valve body.
  • the valve body 4 is connected to the housing 3 of the check / exhaust valve 1 on a first side 7 of the valve opening 6.
  • at least one blind hole-like / pin-shaped recess 9 is arranged on one of the first side 7 opposite the second side 8, which has no connection to the valve opening 6 and which is covered by the valve body 4 at least in the closed state, as shown in FIGS Fig. 1 to 5 is clearly apparent.
  • valve body 4 which may be formed, for example, as a leaf spring made of a spring steel strip is attached via a screw 10 to the housing 3 of the check / exhaust valve 1, for example screwed, which of course as an alternative to the screw 10, another fastener, such as a rivet , can be used.
  • a holding-down device 5 can be provided (cf. Fig. 2 ), which limits an opening movement of the valve body 4 and / or which supports a closed state of the valve body 4, in which it rests tightly on an edge 11 of the valve opening 6, by an additional pressing of the valve body 4 on the edge 11 of the valve opening 6.
  • a damp touchdown of the valve body 4 can be achieved when closing, since the blind hole-like recess 9 fills with oil during operation of the vacuum pump 2 and thereby forms a convex oil pad / oil pad 13, on which the valve body. 4 put on steamed.
  • the check / exhaust valve 1 according to Fig. 5 even has five blind hole / pin-like recesses 9, each having no connection to the valve opening 6 and which are covered by the valve body 4 in its closed state.
  • the blind hole / pin-like recesses 9 are also on a circular arc 12 (see. Fig. 5 ), which runs parallel to the edge 11 of the valve opening 6.
  • the arranged on the arc 12 blind hole / pin-like recesses 9 are disposed within an angular range ⁇ of 120 °, wherein the angle range ⁇ limiting radii on the one hand by a center M of the screw 10 and the associated screw 14th of the housing 3 and on the other hand by a center M 1 of each outermost recess.
  • valve opening 6 is formed oval, in particular by means of each circularly rounded longitudinal ends.
  • a depth t of at least one recess 9 is between 1.5 ⁇ t ⁇ 3 mm.
  • a diameter d of such a recess 9 is preferably between 1.0 ⁇ t ⁇ 2.5 mm.
  • the check / exhaust valve 1 according to the invention With the check / exhaust valve 1 according to the invention, it is thus possible for the first time to effect a markedly reduced noise closing of the valve body 4, since it first rests on an oil pad 13 when placed on the valve opening 6 and only after it has been flattened, moves into its complete closed state. Moreover, the blind hole-like recesses 9 provided according to the invention do not form a bypass bypassing the valve body 4, so that the performance of the check / exhaust valve 1 according to the invention is not reduced in comparison with ventilation openings known, for example, from the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Details Of Valves (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
EP17166594.6A 2016-05-31 2017-04-13 Soupape d'échappement/anti-retour pour une pompe à vide Withdrawn EP3252312A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016209382.7A DE102016209382A1 (de) 2016-05-31 2016-05-31 Rückschlag-/Auslassventil für eine Vakuumpumpe

Publications (1)

Publication Number Publication Date
EP3252312A1 true EP3252312A1 (fr) 2017-12-06

Family

ID=58548621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17166594.6A Withdrawn EP3252312A1 (fr) 2016-05-31 2017-04-13 Soupape d'échappement/anti-retour pour une pompe à vide

Country Status (2)

Country Link
EP (1) EP3252312A1 (fr)
DE (1) DE102016209382A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109519387A (zh) * 2018-11-20 2019-03-26 珠海凌达压缩机有限公司 一种法兰结构、包括该法兰结构的压缩机及电器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228468A (en) * 1992-06-04 1993-07-20 Ingersoll-Rand Company Valve and valve seat for flat valve and method of making same
DE10227772A1 (de) 2001-06-27 2003-01-09 Luk Automobiltech Gmbh & Co Kg Unterdruckerzeuger
WO2003040563A1 (fr) * 2001-11-09 2003-05-15 Lg Electronics Inc. Clapet de refoulement et compresseur equipe de celui-ci
JP2005226536A (ja) * 2004-02-12 2005-08-25 Toyota Motor Corp 真空ポンプ
DE102010044898A1 (de) 2010-09-09 2012-03-15 Schwäbische Hüttenwerke Automotive GmbH Vakuumpumpe mit Lüftungseinrichtung
EP2685103A1 (fr) * 2011-03-08 2014-01-15 Sanden Corporation Dispositif de clapet pour compresseur
EP2908011A1 (fr) 2014-02-18 2015-08-19 Pierburg Pump Technology GmbH Pompe à vide pour véhicule automobile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228468A (en) * 1992-06-04 1993-07-20 Ingersoll-Rand Company Valve and valve seat for flat valve and method of making same
DE10227772A1 (de) 2001-06-27 2003-01-09 Luk Automobiltech Gmbh & Co Kg Unterdruckerzeuger
WO2003040563A1 (fr) * 2001-11-09 2003-05-15 Lg Electronics Inc. Clapet de refoulement et compresseur equipe de celui-ci
JP2005226536A (ja) * 2004-02-12 2005-08-25 Toyota Motor Corp 真空ポンプ
DE102010044898A1 (de) 2010-09-09 2012-03-15 Schwäbische Hüttenwerke Automotive GmbH Vakuumpumpe mit Lüftungseinrichtung
EP2685103A1 (fr) * 2011-03-08 2014-01-15 Sanden Corporation Dispositif de clapet pour compresseur
EP2908011A1 (fr) 2014-02-18 2015-08-19 Pierburg Pump Technology GmbH Pompe à vide pour véhicule automobile

Also Published As

Publication number Publication date
DE102016209382A1 (de) 2017-11-30

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