EP2908011B1 - Pompe à vide pour véhicule automobile - Google Patents

Pompe à vide pour véhicule automobile Download PDF

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Publication number
EP2908011B1
EP2908011B1 EP14155617.5A EP14155617A EP2908011B1 EP 2908011 B1 EP2908011 B1 EP 2908011B1 EP 14155617 A EP14155617 A EP 14155617A EP 2908011 B1 EP2908011 B1 EP 2908011B1
Authority
EP
European Patent Office
Prior art keywords
valve
microgrooves
vacuum pump
motor vehicle
recited
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
EP14155617.5A
Other languages
German (de)
English (en)
Other versions
EP2908011A1 (fr
Inventor
Enver Des
Moritz Johannes Job
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Priority to EP14155617.5A priority Critical patent/EP2908011B1/fr
Priority to PCT/EP2015/052090 priority patent/WO2015124415A1/fr
Priority to CN201580008803.4A priority patent/CN106030114B/zh
Priority to US15/115,694 priority patent/US11047391B2/en
Priority to JP2016547523A priority patent/JP6490699B2/ja
Publication of EP2908011A1 publication Critical patent/EP2908011A1/fr
Application granted granted Critical
Publication of EP2908011B1 publication Critical patent/EP2908011B1/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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • 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 invention relates to a motor vehicle vacuum pump, which is designed as a positive displacement pump, for example as a vane pump.
  • the motor vehicle vacuum pump is an accessory in a motor vehicle, which is driven for example directly by an internal combustion engine or by a separate electric drive motor.
  • the motor vehicle vacuum pump has a pumping space in which a pump rotor rotates, which compresses a gas, generally air, within the pump space and pushes it out of the pump space into an outlet space through an outlet valve.
  • the outlet valve prevents backflow of compressed gas from the outlet space into the pumping space.
  • a leaf spring valve in which the valve body is designed as a leaf spring which rests in the closed position on a valve seat surrounding the valve opening and lifts at sufficient pressure difference from the valve seat, so that the exhaust valve opens becomes.
  • Problematic or at least undesirable in vacuum pumps with exhaust valves is the noise that results essentially from the high accelerations of the valve body, the lubricant in a lubricated vacuum pump and the sudden compression or decompression of the gas.
  • a mechanical automotive vacuum pump in which a channel or opening is provided for the purpose of noise reduction in the vicinity of the exhaust valve to gradually reduce the pressure changes in this area.
  • Object of the invention was in contrast to provide a motor vehicle vacuum pump with reduced noise.
  • the valve seat and / or the corresponding part of the valve body closing body on several microns which are oriented in a star-like manner in the lateral direction, so are arranged approximately radially, for example, circular valve opening.
  • the microgrooves in this way produce drainage in the closing plane of the outlet valve, via which a faster pressure equalization takes place in the interface between the valve seat and the corresponding part of the closing body when the outlet valve is opened.
  • the dissolving force for overcoming the adhesion force caused by the lubricant between the valve seat and the corresponding edge region of the closing body is thereby considerably reduced.
  • the groove width of the microgrooves is less than 0.5 mm.
  • the groove depth t of the microgrooves is smaller than 0.2 mm, and more preferably smaller than 0.1 mm.
  • the groove width of the microgrooves is less than 0.25 mm.
  • the ratio of the length I of the microgrooves to their mutual lateral distance d is greater than 1.0.
  • the distance between two micro-grooves to each other is usually less than the length of the micro-grooves,
  • the micro-grooves do not intersect, but are arranged in a star-like manner. In rectilinear regions of the valve seat, the microgrooves are preferably arranged parallel to one another.
  • the microgrooves are provided either only on the valve seat or only on the closing body.
  • the microgrooves are provided only on the valve seat which surrounds the valve opening.
  • the positive effects on the noise emissions can not be significantly improved by providing the microgrooves on both the valve seat and the valve body closing body, so that by providing the micro grooves only one side of the interface, the manufacturing cost can be kept relatively low without functional disadvantage.
  • one longitudinal end of the microgrooves is toward the valve opening and the other longitudinal end of the microgrooves is open toward the outlet space.
  • valve seat is raised. This simple measure can in particular ensure that the microgrooves are always open on the outside at their outer longitudinal end to the outlet space.
  • the microgrooves are made by laser engraving or by embossing. In this way, the opening and closing behavior of the exhaust valve can be significantly improved with a relatively simple process.
  • the valve body is designed as a leaf spring. Such a design of the valve body is inexpensive and mechanically reliable.
  • FIG. 1 an open automotive vacuum pump 10 is shown, in which a partition wall 22 is visible, which separates a pump space 1.2 from an outlet space 14, as in the cross-sectional view of FIG. 5 shown.
  • the vacuum pump 10 is a so-called mechanical vacuum pump, which is mechanically driven by an internal combustion engine, that rotates with a speed proportional to the speed of the internal combustion engine.
  • the vacuum pump 10 is driven in the installed state directly via the camshaft of the engine.
  • the vacuum pump 10 is designed as a compacting pump, and compresses discontinuously gas, in particular air.
  • an outlet valve 20 is provided on the partition 22, which opens at a corresponding overpressure in the pump chamber 12 and at non-overpressure in the pump chamber 12, a backflow of the Gas from the outlet chamber 14 back into the pump chamber 12 prevented.
  • the exhaust valve 20 is in FIG. 5 represented together with the partition wall 22 in cross section.
  • the outlet valve 20 is designed as a so-called spring leaf valve.
  • a longitudinally oval-curved valve opening 24 is provided in the partition 22 .
  • a valve body 40, 40 ' is fixed, which in a first embodiment in the FIG. 3 and in a second embodiment in the FIG. 4 is shown in detail in plan view of his pump room side side.
  • the valve body 40, 40 ' has three sections in the longitudinal extent, namely the closing body section 43, 43', the hinge section 44 and the fastening section 46.
  • the valve body 40; 40 ' consists of spring plate and has in its joint portion 44 a taper 45, whereby the valve body 40; 40 'is formed in this section 44 easier bendable than in the adjacent sections 46,43.
  • the valve body 40, 40 ' has a mounting opening 48 and a recess 52.
  • the valve body 40 is fixed with a fastening means 50 in an example provided with a threaded bore 28 of the partition 22.
  • the fastener 50 may be a screw, a rivet, or other suitable fastener.
  • the recess 52 surrounds a raised retaining lug 124 of the partition wall 22, so that the valve body 40 is fixed by the fastening means 50 and the retaining lug 124 clearly and non-rotatably on the partition wall 22.
  • the partition wall 22 has a joint depression 26.
  • valve body 40 At the other longitudinal end of the valve body 40; 40 'is a closing body 42,42' arranged in his in the FIG. 5 shown closed position completely closes the valve opening 24.
  • the partition wall 22 On the outlet-side 23, the partition wall 22 has a valve seat 30 which is raised in relation to the partition wall ground plane and has a planar design, onto which the corresponding strip-like edge region of the valve seat 30 extends FIGS. 3 and 4 shown pumping chamber side of the closing body rests in the closed position 42.
  • the web-like valve seat 30 has a raised height with respect to the neighboring areas of about 1 mm.
  • the valve seat 30 to 50 micro grooves 32 which are oriented in the lateral direction, ie star-like run from the inside to the outside and do not intersect.
  • the microgrooves 32 are oriented approximately perpendicular to the opening edge.
  • the microgrooves 32 have been laser engraved into the valve seat 30.
  • the microgrooves 32 typically have a groove depth t of 0.025 mm and a groove width b of 0.1 mm.
  • the length I of the microgrooves 32 may be 1.0 to 2.0 mm, the lateral distance d of two adjacent microgrooves to each other is less than 1.0 mm. In any case, the mean lateral distance d is always smaller than the length I of the microgrooves 32.
  • valve body 40 has on its side facing the valve seat 30 microgrooves 32' having the same dimensions and orientations as the microgrooves 32 in the valve seat 30.
  • the valve body 40 'having microgrooves 32' may be combined with a valve seat without micro grooves, or with a valve seat 30 according to the Figures 2 and 5 with micro grooves 32.
  • the microgrooves 32 on the valve seat 30 are open at their two longitudinal ends, so that the outer longitudinal ends open towards the outlet space and the inner longitudinal ends are open towards the pumping space. In this way, at both longitudinal ends, a fluid flow into the respective micro grooves can flow in or out, so that a corresponding pressure equalization in the micro groove is always possible. A drainage of the valve seat 30 is ensured in all operating states of the exhaust valve 20.
  • the vacuum pump 10 is preferably lubricated with oil, so that, in particular, oil is allowed to flow through the microgrooves 32 during an opening and a closing operation. 32 'flows in and out.
  • the valve body 40; 40 ' is biased so that it opens at a differential pressure of about 0.04 bar.
  • the oil can already flow in the direction of the opening center at the aforementioned differential pressure, so that the oil film between the valve seat 30 and the closing body 42; 43 'quickly breaks off.
  • a harmonic opening movement of the valve body 40 is made possible, so that the noise emissions are significantly reduced. This also applies analogously to the closing movement.

Landscapes

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

Claims (10)

  1. Pompe à vide (10) pour véhicule automobile avec
    une chambre de pompage (12) dans laquelle un rotor de pompe tourne pour comprimer,
    une chambre de sortie (14), dans laquelle le gaz comprimé sort à partir de la chambre de pompage (12),
    une paroi de séparation (22) séparant la chambre de pompage (12) de la chambre de sortie (14), et
    une soupape de sortie (20) sous forme d'une soupape anti-retour, formée dans la paroi de séparation (22), le gaz comprimé sortant de la chambre de pompage (12) dans la chambre de sortie (14) à travers la soupape de sortie,
    ladite soupape de sortie (20) étant formée par une ouverture de soupape (24) dans la paroi de séparation (22) et un corps de soupape (40; 40') ayant un corps de fermeture (42),
    un siège de soupape (30) étant prévu sur le côté de sortie de la paroi de séparation (22) autour de l'ouverture de soupape (24), la partie correspondante du corps de fermeture (42) du corps de soupape (40; 40') restant sur ce siège dans son position de fermeture,
    caractérisée en ce que
    le siège de soupape (30) et/ou la partie correspondante du corps de fermeture (42; 42') est pourvu de plusieurs micro-rainures (32; 32') orientées dans la direction latérale,
    et
    la largeur de rainure b des micro-rainures (32; 32') est inférieure à 0,5 mm.
  2. Pompe à vide (10) pour véhicule automobile selon la revendication 1, dans laquelle la profondeur de rainure t des micro-rainures (32; 32') est inférieure à 0,2 mm et de façon particulièrement préférée inférieure à 0,1 mm.
  3. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle la largeur de rainure b des micro-rainures (32; 32') est inférieure à 0,25 mm.
  4. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle, pour au moins la moitié du siège de soupape (30) le rapport de la longueur I des micro-rainures (32; 32') à leur distance latérale d mutuelle est supérieur à 1,0.
  5. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle les micro-rainures (32; 32') se ne croisent pas.
  6. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle les micro-rainures (32; 32') sont prévues seulement au siège de soupape (30) ou au corps de fermeture (42').
  7. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle une extrémité longitudinale des micro-rainures (32; 32') est ouverte vers l'ouverture de soupape (24) et l'autre extrémité longitudinale est ouverte vers la chambre de sortie (14).
  8. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle le siège de soupape (30) est en relief.
  9. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle les micro-rainures (32; 32') sont formées par gravure au laser ou par embossage.
  10. Pompe à vide (10) pour véhicule automobile selon l'une quelconque des revendications précédentes, dans laquelle le corps de soupape (40; 40') est réalisé comme ressort à lame.
EP14155617.5A 2014-02-18 2014-02-18 Pompe à vide pour véhicule automobile Active EP2908011B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14155617.5A EP2908011B1 (fr) 2014-02-18 2014-02-18 Pompe à vide pour véhicule automobile
PCT/EP2015/052090 WO2015124415A1 (fr) 2014-02-18 2015-02-02 Pompe à vide de véhicule à moteur
CN201580008803.4A CN106030114B (zh) 2014-02-18 2015-02-02 机动车真空泵
US15/115,694 US11047391B2 (en) 2014-02-18 2015-02-02 Motor vehicle vacuum pump
JP2016547523A JP6490699B2 (ja) 2014-02-18 2015-02-02 自動車用真空ポンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14155617.5A EP2908011B1 (fr) 2014-02-18 2014-02-18 Pompe à vide pour véhicule automobile

Publications (2)

Publication Number Publication Date
EP2908011A1 EP2908011A1 (fr) 2015-08-19
EP2908011B1 true EP2908011B1 (fr) 2017-11-08

Family

ID=50112849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14155617.5A Active EP2908011B1 (fr) 2014-02-18 2014-02-18 Pompe à vide pour véhicule automobile

Country Status (5)

Country Link
US (1) US11047391B2 (fr)
EP (1) EP2908011B1 (fr)
JP (1) JP6490699B2 (fr)
CN (1) CN106030114B (fr)
WO (1) WO2015124415A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3371457B1 (fr) * 2015-11-02 2020-12-30 Pierburg Pump Technology GmbH Pompe à vide pour une voiture
DE102016209382A1 (de) 2016-05-31 2017-11-30 Mahle International Gmbh Rückschlag-/Auslassventil für eine Vakuumpumpe

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58172482A (ja) * 1982-04-05 1983-10-11 Hitachi Ltd スクロ−ル圧縮機
JPS60122287A (ja) 1983-12-06 1985-06-29 Mitsubishi Electric Corp 圧縮機の吐出弁装置
CH674757A5 (fr) * 1988-01-19 1990-07-13 Burckhardt Ag Maschf
CN1083062C (zh) * 1995-04-20 2002-04-17 Lg电子株式会社 密闭式压缩机
JPH09291960A (ja) 1996-04-25 1997-11-11 Unisia Jecs Corp 液圧緩衝器のバルブ構造
US5934305A (en) * 1996-09-12 1999-08-10 Samsung Electronics Co., Ltd. Method of manufacturing a reciprocating compressor
KR100253656B1 (ko) * 1997-08-29 2000-05-01 배길성 압축기용 밸브 어셈블리
JP2001221173A (ja) * 2000-02-04 2001-08-17 Mitsubishi Heavy Ind Ltd スクロール圧縮機
GB2380523A (en) 2001-06-27 2003-04-09 Luk Automobiltech Gmbh & Co Kg Vacuum generator
JP2007064196A (ja) * 2005-08-05 2007-03-15 Valeo Thermal Systems Japan Corp 弁機構構成部材の加工方法
DE102007005216B4 (de) 2007-01-29 2015-07-30 Pierburg Gmbh Vakuumpumpe
JP5313761B2 (ja) 2009-05-08 2013-10-09 パナソニック株式会社 リチウムイオン電池
BR112012018364A2 (pt) * 2010-01-28 2019-09-24 Toyota Jidoshokki Kk compressor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP2017503965A (ja) 2017-02-02
US11047391B2 (en) 2021-06-29
EP2908011A1 (fr) 2015-08-19
US20170009770A1 (en) 2017-01-12
CN106030114A (zh) 2016-10-12
CN106030114B (zh) 2018-01-02
WO2015124415A1 (fr) 2015-08-27
JP6490699B2 (ja) 2019-03-27

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