WO2010031504A2 - Pompe à vide - Google Patents

Pompe à vide Download PDF

Info

Publication number
WO2010031504A2
WO2010031504A2 PCT/EP2009/006463 EP2009006463W WO2010031504A2 WO 2010031504 A2 WO2010031504 A2 WO 2010031504A2 EP 2009006463 W EP2009006463 W EP 2009006463W WO 2010031504 A2 WO2010031504 A2 WO 2010031504A2
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum pump
recess
outlet opening
rotor
wing
Prior art date
Application number
PCT/EP2009/006463
Other languages
German (de)
English (en)
Other versions
WO2010031504A3 (fr
Inventor
Markus Kinzel
Original Assignee
Ixetic Hückeswagen 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 Ixetic Hückeswagen Gmbh filed Critical Ixetic Hückeswagen Gmbh
Priority to DE112009002099T priority Critical patent/DE112009002099A5/de
Publication of WO2010031504A2 publication Critical patent/WO2010031504A2/fr
Publication of WO2010031504A3 publication Critical patent/WO2010031504A3/fr

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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • 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
    • F04C2240/20—Rotors

Definitions

  • the invention relates to a vacuum pump, in particular a vane pump, having a rotor which is rotatable about an axis of rotation and is guided by the at least one wing movable back and forth within a circulation contour, at which the rotor conforms in a nip, in the vicinity thereof Outlet opening is provided in an axial housing boundary surface.
  • the object of the invention is a vacuum pump, in particular a vane pump, with a rotor which is rotatable about an axis of rotation and is guided by the at least one wing movable back and forth within a circulation contour, on which the rotor conforms in a nip, in the proximity of which an outlet opening is provided in an axial housing boundary surface to provide, which has a long life and low power dissipation.
  • the object is in a vacuum pump, in particular a vane pump, with a rotor which is rotatable about an axis of rotation and is guided by the at least one wing movable back and forth within a circulation contour at which the rotor nestles in a nip in the vicinity an outlet opening is provided in an axial housing limiting surface, achieved by providing at least one recess, which at least temporarily covers the outlet opening, at a part of the vacuum pump which is moved by rotation of the rotor and which opens towards the outlet opening.
  • the outlet opening is preferably an outlet opening on the outlet side, on which the working medium is ejected in normal operation.
  • the outlet opening can also be an additional outlet opening on the suction side, onto which the working medium is sucked in, for example, from an internal combustion engine during normal operation.
  • a plurality of outlet ports for example, an overpressure-side outlet port and a vacuum-side outlet port, may be configured according to an embodiment of the present invention. Through the outlet opening a pressurized in the vacuum pump working fluid is ejected. For the dimensioning of the outlet opening extreme conditions are determining, for example, high pressure at a cold start or pressure peaks at high speeds.
  • a preferred embodiment of the vacuum pump is characterized in that the recess is arranged, at least partially, in register with the outlet opening. The overlap is preferably greatest when the wing approaches the crimp gap.
  • the recess is preferably attached to a part of the vacuum pump, which rotates about the rotor rotational axis during operation of the vacuum pump and thereby moves past the outlet opening.
  • a further preferred embodiment of the vacuum pump is characterized in that the recess is provided on a part of the rotor.
  • the outlet opening is concealed, at least in part, by the rotor, the wing and possibly caps provided at the wing tips.
  • a further preferred embodiment of the vacuum pump is characterized in that the recess is provided on a cheek of a wing receiving slot of the rotor.
  • a further preferred embodiment of the vacuum pump is characterized in that the recess is provided radially outwardly on the cheek of the wing receiving slot of the rotor.
  • the recess is preferably, viewed in the axial direction, provided at one end of the cheek as a chamfer of a corner of the wing receiving slot.
  • Axial means in the context of the present invention in the direction or parallel to the axis of rotation of the rotor.
  • a further preferred embodiment of the vacuum pump is characterized in that the recess is designed as a chamfer which extends in the axial direction.
  • the recess in particular the chamfer, completely covers the outlet opening when the wing receiving slot moves toward the nip.
  • the recess is provided on a cap which is attached to one end of the wing, and / or on the wing itself.
  • a further preferred embodiment of the vacuum pump is characterized in that a further recess is provided on the further part or on the part of the vacuum pump which conceals a further outlet opening, which opens to the further outlet opening.
  • the further outlet opening is preferably effective in a reverse rotation of the rotor against the normal operating direction of rotation.
  • the further recess is designed in accordance with one of the embodiments described above, but arranged on the opposite side of the copegeldichtWallets with the circulation contour.
  • FIG. 1 shows a vacuum pump according to a first embodiment with an open pump housing in plan view
  • Figure 2 is a perspective view of the vacuum pump of Figure 1 with a
  • Figure 3 is an enlarged view of the broken portion of Figure 2;
  • Figure 4 is a similar view as in Figure 2 according to another embodiment and
  • FIGS. 1 to 5 each show a vacuum pump 1; 41 shown in different views.
  • the same reference numbers are used to designate the same.
  • the vacuum pump 1; 41 includes a housing 2 with a housing pot 4, which is shown in Figures 1 to 5 without an associated housing cover, ie in the open state, so that you see the inside of the housing pot 4 arranged parts of the vacuum pump 1.
  • a circulation contour 5 is formed, which is also referred to as a stroke contour and limits a working space in the interior of the vacuum pump 1 in the radial direction.
  • a pot bottom 6 which is an axial housing boundary surface of the working space.
  • a rotor 8 is rotatably mounted, which rotates during operation of the vacuum pump 1 in an operating direction of rotation 24, which is indicated by an arrow.
  • a wing 14 is slidably guided within the circulation contour 5.
  • caps 15, 16 are attached, which bear against the circulating contour 5.
  • the rotor 8; 48 nestles with its outer contour in a so-called Schmiegespalt 18 to the circulation contour. 5
  • the suction chamber 19 is also referred to as a suction chamber.
  • the pressure chamber 20 is also referred to as a pressure chamber.
  • the suction chamber 19 communicates with an inlet port 17 of the vacuum pump 1 in connection.
  • a working medium, in particular air is sucked into the suction space 19 via the inlet connection 17 and mixed with oil in the pressure space 20 with oil to form an air-oil mixture subjected to pressure.
  • the vacuum pump which is also referred to as a single-blade pump because of its one wing 14, is used to apply a negative pressure, that is to say a vacuum, to a brake booster of a motor vehicle.
  • the pressure chamber 20 is connected via an outlet opening 21 with the interposition of a (not shown) check valve with a crankcase of an internal combustion engine of a motor vehicle in combination.
  • a (not shown) check valve with a crankcase of an internal combustion engine of a motor vehicle in combination.
  • the outlet opening 21 which is through the wing 14 with Pressure acted upon working fluid from the pressure chamber 20 of the vacuum pump 1 is ejected.
  • the outlet opening 21 extends into the vicinity of the Schmiegespalts 18th
  • Another outlet opening 22 is provided in the suction chamber 19.
  • the further outlet opening 22 is also connected to the crankcase of the internal combustion engine with the interposition of another check valve.
  • the further outlet opening 22 is effective when the rotor 8 rotates due to incorrect operation of the vehicle during transport against its normal operating direction of rotation 24. Such a malfunction of the vehicle is, for example, when the vehicle rolls backwards from a ramp with an engaged forward gear.
  • the two outlet openings 21, 22 are both recessed in the pot bottom 6 and are partially and temporarily from the rotor 8; 48, the wing 14 and the caps 15, 16 covered.
  • the wing receiving slot 9; 49 extends with its two cheeks 11, 12; 51, 52 through the rotor 8 therethrough.
  • a working medium shaft is formed on the circulating contour 5 on the cap 15 in front of the lubricating gap 18. The working medium shaft is pushed out through the outlet opening 21.
  • FIGS. 1 to 3 a part of the outlet opening 21, which was previously covered by the rotor 8, is released through the recess 25, whereby a larger outlet cross-section in the critical area between the wing 14 and the cap 15 and the Schmiegespalt 18 is released in view of the pressure to be degraded.
  • the recess 25 ensures that the remaining pressure space in front of the wing 14 is connected to the outlet opening 21.
  • the recess 25 is designed as a chamfer.
  • Another, also formed as a chamfer recess 26 is provided in the wing receiving slot 9 diagonally opposite to the cheek 12.
  • FIGS. 4 and 5 it can be seen that on the cheek 51 of the wing receiving slot 49 of the rotor 48 there can also be provided a partial recess 65, for example as a bevel of a corner, which opens towards the outlet opening 21. I have to say

Landscapes

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

Abstract

La présente invention concerne une pompe à vide, notamment une pompe à palettes, comprenant un rotor qui peut tourner autour d'un axe de rotation et qui est guidé selon un mouvement de va-et-vient à l'intérieur d'un contour périphérique par la ou les palettes. Le rotor s'adapte contre ce contour périphérique dans un espace d'adaptation à proximité duquel se trouve une ouverture de refoulement dans une surface de délimitation axiale du carter. L'invention est caractérisée en ce que au moins une cavité s'ouvrant sur l'ouverture de refoulement se trouve sur une partie de la pompe à vide qui obture partiellement l'ouverture de refoulement au moins temporairement.
PCT/EP2009/006463 2008-09-16 2009-09-07 Pompe à vide WO2010031504A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112009002099T DE112009002099A5 (de) 2008-09-16 2009-09-07 Vakuumpumpe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008048535.7 2008-09-16
DE102008048535 2008-09-16

Publications (2)

Publication Number Publication Date
WO2010031504A2 true WO2010031504A2 (fr) 2010-03-25
WO2010031504A3 WO2010031504A3 (fr) 2010-09-02

Family

ID=42039940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/006463 WO2010031504A2 (fr) 2008-09-16 2009-09-07 Pompe à vide

Country Status (2)

Country Link
DE (1) DE112009002099A5 (fr)
WO (1) WO2010031504A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134448A3 (fr) * 2010-04-26 2013-03-07 Ixetic Hückeswagen Gmbh Pompe à vide
CN106704196A (zh) * 2017-01-23 2017-05-24 世特科汽车工程产品（常州）有限公司 一种真空泵叶片、制造方法及设备
CN109891098A (zh) * 2016-11-03 2019-06-14 大丰工业株式会社 叶片泵
CN109923313A (zh) * 2016-11-03 2019-06-21 大丰工业株式会社 叶片泵
US10619638B2 (en) 2015-06-24 2020-04-14 Pierburg Pump Technology Gmbh Mechanical automotive vacuum pump with cantilevered rotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326180A (en) * 1928-09-28 1930-02-28 Wiltse Appliance Company Improvements in rotary pumps
DE2235045A1 (de) * 1972-07-17 1974-01-31 Siemens Ag Drehschieberpumpe mit einem kreisrunden rotor
EP0264749A2 (fr) * 1986-10-18 1988-04-27 B a r m a g AG Pompe à vide à palettes
DE3734573A1 (de) * 1986-10-18 1988-04-28 Barmag Barmer Maschf Fluegelzellenpumpe
EP0401968A2 (fr) * 1989-06-06 1990-12-12 Ford Motor Company Limited Compresseur rotatif
DE102005045355A1 (de) * 2005-09-23 2007-03-29 Bayerische Motoren Werke Ag Flügelzellen-Unterdruckpumpe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326180A (en) * 1928-09-28 1930-02-28 Wiltse Appliance Company Improvements in rotary pumps
DE2235045A1 (de) * 1972-07-17 1974-01-31 Siemens Ag Drehschieberpumpe mit einem kreisrunden rotor
EP0264749A2 (fr) * 1986-10-18 1988-04-27 B a r m a g AG Pompe à vide à palettes
DE3734573A1 (de) * 1986-10-18 1988-04-28 Barmag Barmer Maschf Fluegelzellenpumpe
EP0401968A2 (fr) * 1989-06-06 1990-12-12 Ford Motor Company Limited Compresseur rotatif
DE102005045355A1 (de) * 2005-09-23 2007-03-29 Bayerische Motoren Werke Ag Flügelzellen-Unterdruckpumpe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011134448A3 (fr) * 2010-04-26 2013-03-07 Ixetic Hückeswagen Gmbh Pompe à vide
US10619638B2 (en) 2015-06-24 2020-04-14 Pierburg Pump Technology Gmbh Mechanical automotive vacuum pump with cantilevered rotor
CN109891098A (zh) * 2016-11-03 2019-06-14 大丰工业株式会社 叶片泵
CN109923313A (zh) * 2016-11-03 2019-06-21 大丰工业株式会社 叶片泵
US11306718B2 (en) 2016-11-03 2022-04-19 Taiho Kogyo Co., Ltd. Vane pump
US11346343B2 (en) 2016-11-03 2022-05-31 Taiho Kogyo Co., Ltd. Vane pump including pressure relief groove
CN106704196A (zh) * 2017-01-23 2017-05-24 世特科汽车工程产品（常州）有限公司 一种真空泵叶片、制造方法及设备

Also Published As

Publication number Publication date
WO2010031504A3 (fr) 2010-09-02
DE112009002099A5 (de) 2011-09-29

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