EP1766237B1 - Pompe a vide a une ailette - Google Patents

Pompe a vide a une ailette Download PDF

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Publication number
EP1766237B1
EP1766237B1 EP05731506A EP05731506A EP1766237B1 EP 1766237 B1 EP1766237 B1 EP 1766237B1 EP 05731506 A EP05731506 A EP 05731506A EP 05731506 A EP05731506 A EP 05731506A EP 1766237 B1 EP1766237 B1 EP 1766237B1
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EP
European Patent Office
Prior art keywords
blade
vacuum pump
pump according
wing
section
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
EP05731506A
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German (de)
English (en)
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EP1766237A1 (fr
Inventor
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 Hydromechanic GmbH
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Joma Hydromechanic GmbH
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Publication date
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Application filed by Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP1766237A1 publication Critical patent/EP1766237A1/fr
Application granted granted 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
    • 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
    • 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
    • F01C21/0881—Construction of vanes or vane holders the vanes consisting of two or more parts
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

Definitions

  • the invention relates to a single-wing 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 and a wing receiving working space with an inner peripheral surface, against which the two opposite sealing edges of the wing, wherein the Wing divided the working space into a suction chamber and a pressure chamber.
  • Vacuum pumps of such a construction are known ( DE 100 46 697 A1 or DE 3913989 A1 ). As a rule, they serve to provide a vacuum for a vacuum consumer, for example in a motor vehicle, by causing the rotor to rotate and sucking air out of a vacuum line via the suction space.
  • the working space of this vane pump is designed so that the wing with its two opposite ends on the inner peripheral surface slides along. The wing separates the suction chamber, which is connected to the suction port, from the pressure chamber, which is connected to the pressure port. In order to achieve a high degree of efficiency, the wing must be permanently attached to the inner peripheral surface, since the suction chamber is otherwise ventilated.
  • a known solution proposes to build the wing in two parts and to insert a spring between the two wing parts, which urges the two wing parts outward in the direction of the peripheral surface. This will ensures that the sealing edges of the wing permanently on the inner peripheral surface.
  • a disadvantage is considered that this wing is subject to considerable wear due to the contact pressure, which not only reduces the efficiency, but also maintenance intervals are shortened.
  • a vane pump has become known in which a plurality of blades are arranged eccentrically in the rotor. The wings are acted upon at their wing tip and the wing bottom with the pressure prevailing in the pressure chamber.
  • a lubricating device for fast-running rotary body is known in which the lubricating film distributing wing is chamfered on its front.
  • the invention is therefore based on the object to provide a single-wing vacuum pump, which has a better efficiency.
  • the ends of the wing are cylindrically rounded and abut on a central contact or surface line of the cylinder on the inner peripheral surface of the working space.
  • the end of the wing is partially flattened on the pressure side, whereby the pressure forces acting on the wing are changed in their direction.
  • the flattened section increases the radial component of the compressive force which counteracts the centrifugal force of the wing.
  • the centrifugal force of the wing connecting the wing to the peripheral surface presses the working space, so is reduced by the opposing pressure force from the pressure chamber. The wing is thus pressed less strongly against the peripheral surface.
  • the surfaces bounding the section or adjacent to the section are partially cylindrical. This provides the advantage that the contact line can relatively easily move along the surface of the wing tip. Since the angle of attack of the wing during a complete revolution of the rotor is constantly changing, and the contact line of the wing tip migrates slightly, the cylindrical design of the wing tip ensures uniform wear.
  • the flattened portion is planar.
  • Such trained wing tips are relatively easy to produce, since this flattened portion, for example, attached by a milling process, can be produced.
  • the section has a deviating from 0 ° angle to the longitudinal surface of the wing.
  • the wing is located off-center on the inner peripheral surface.
  • the contact line thus has a distance to the median plane of the wing, whereby the advantage is achieved that the flattened portion can be made larger. As a result, the tangential component of the compressive force can be further reduced.
  • a harmonious course and thus a simple production of the wing tip is achieved in that the surfaces on the wing tip steadily pass into the flattened section.
  • the surfaces and the section at the transition points can have the same tangents exhibit.
  • the processing tools can produce the wing tip in a single operation or can be easily and inexpensively manufactured in an injection-molded wing tip injection mold.
  • the wing has a wing body and two terminal attachments. At these essays of the flattened portion is formed and these essays are applied to the inner peripheral surface of the working space.
  • the attachments may preferably be made of plastic, whereas the wing body is made of metal, for example.
  • the wing body is a die-cast or injection-molded element and the attachments are injection-molded.
  • the wing body at its the tips receiving ends each have a slot which is orthogonal to the longitudinal broad side of the wing body.
  • the article has a U-shaped or C-shaped cross-section formed by two parallel legs.
  • the legs flank a ridge, wherein the legs are formed semicircular even at its free end and engage in a corresponding semi-circular Auf founded at the ends of the wing body.
  • Both the bridge and shank mountings prevent the attachments from making undefined movements during pump operation. In particular, a flutter or rattle is prevented In addition, noise developments are prevented.
  • the essays are pushed under low bias on the ends of the wing body.
  • FIG. 1 is denoted by the reference numeral 10, 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.
  • this interior 16 is a generally designated 18 rotor in which a wing 20 is mounted orthogonal to the axis of rotation 21 slidably ..
  • the wing 20 divides the working chamber 22 formed by the interior 18 in a suction chamber 24 and a pressure chamber 26.
  • the wing 20 is located with its two ends 28 on a working space 22 surrounding inner peripheral surface 30 at.
  • the wing 20 is how out FIG. 1 can be seen, formed by a wing body 32 and two essays 34.
  • the FIG. 3 shows the wing body 32, wherein the FIG. 4 one of the essays 34 reflects.
  • the wing body 32 is made of metal in the embodiment and is a die-cast part, but it may also be injection-molded.
  • the article 34 is made of plastic and is injection molded.
  • cavities 36 which are designed either continuously or as a blind hole.
  • the wing body 32 each have a slot 40 which extends on the one hand in the direction of the longitudinal axis 42 of the wing 20, on the other hand orthogonal to the broad side surface 44.
  • the longitudinal axis 42 of the wing 20 is located between the two broad side surfaces 44 and the contact line 68 is located between the longitudinal center plane 70 and the suction side 42 facing broad side surface 44th
  • the two broad side surfaces 44 are provided in the region of the ends 38 with substantially semicircular recesses 46, in which leg 48 (see FIG. 4 ) of Attachment 34 can be inserted.
  • the two legs 48 flank a web 50, which also extends in the direction of the longitudinal axis 42 of the wing 20 and has the shape of the slot 40. Both the slot 40 with web 50 and the recess 46 prevent the attachment 34 can be displaced in the direction of the axis 52.
  • the legs 48 engaging around the end 38 prevent the attachment 34 from dodging in the direction of the axis 54. This means that the attachment 34 is fastened on the wing body 32 so as to be displaceable only in the direction of the longitudinal axis 42.
  • FIG. 5 is a plan view of the wing body 32 with attached attachment 34 shown.
  • the attachment 34 touches the inner peripheral surface 30, so that the suction chamber 24 are below and the pressure chamber 26 above the wing 20.
  • the vane 20 rotates in the direction of the arrow 56 and, at its rear side facing the suction space 24, merges into the broad side surface 44 of the wing 20 at an angle different from the 90 °.
  • the attachment 34 has a flattened portion 66, on which the pressure force 60 acts.
  • This pressure force 60 is composed of the pressure force 58 and an additional pressure force 62, which arises because the contact line 68 has a distance A from the center plane 70 of the wing 20. Since the pressure force 60 actually acting on the wing 20 due to the displacement of the contact line 68 is greater than the pressure force 58 in a conventional wing, and also the negative pressure in the suction chamber 24th originating forces 74 are smaller than in a conventional wing, the contact pressure at the contact line 68 is substantially reduced, whereby the wear is reduced.
  • the contact line 38 is located on a partially cylindrical portion 72 of the attachment 34.
  • the partially cylindrical portion 72 is continuous with the same tangent in the flat portion 66 on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (13)

  1. Pompe à vide à une ailette comportant un carter (12) en forme de pot, un rotor (18), monté de manière rotative et excentrée dans le carter (12), une ailette (20), montée de manière mobile dans le rotor (18) orthogonalement à l'axe de rotation (21), et une chambre de travail (22), logeant l'ailette (20) et munie d'une face périphérique intérieure (30), sur laquelle prennent appui les deux arêtes d'étanchéité (68) de l'ailette (20), opposées l'une à l'autre, l'ailette (20) séparant la chambre de travail (22) en une chambre d'aspiration (24) et une chambre de pression (26), l'extrémité (28) de l'ailette (20), orientée vers la face périphérique intérieure (30), comportant une partie aplatie (66) sur le côté orienté vers la chambre de pression (26), caractérisée en ce que les surfaces qui délimitent la partie (66) sont partiellement cylindriques.
  2. Pompe à vide à une ailette selon la revendication 1, caractérisée en ce que la partie aplatie (66) est plane.
  3. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie (66) délimite avec la face longitudinale de l'ailette (20) un angle différent de 0°.
  4. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ailette (20) est en appui de manière excentrée contre la face périphérique intérieure (30).
  5. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que la ligne de contact (68) de l'ailette (20) est située à une distance (A) du plan médian (70) de l'ailette (20).
  6. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que les surfaces se prolongent en continu dans la partie (66).
  7. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que les surfaces et la partie (66) comportent des tangentes identiques au niveau des zones de transition.
  8. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ailette (20) comporte un corps d'ailette (32) et deux embouts (34) montés aux extrémités.
  9. Pompe à vide à une ailette selon la revendication 8, caractérisée en ce que le corps d'ailette (32), au niveau de ses extrémités (38) recevant les embouts (34), comporte respectivement une fente (40), qui est orientée orthogonalement au grand côté longitudinal (44) du corps d'ailette (32).
  10. Pompe à vide à une ailette selon la revendication 8 ou 9, caractérisée en ce que l'embout (34) a une section en forme de U formant deux branches (48) parallèles.
  11. Pompe à vide à une ailette selon la revendication 10, caractérisée en ce que les branches (48) flanquent une nervure (50).
  12. Pompe à vide à une ailette selon les revendications 9 et 11, caractérisée en ce que la nervure (50) s'engage dans une fente (40) lorsque l'ailette (20) est montée.
  13. Pompe à vide à une ailette selon l'une quelconque des revendications 8 à 12, caractérisée en ce que l'embout (34) peut être enfiché sur le corps d'ailette (32) en étant tourné de 180°.
EP05731506A 2004-07-09 2005-04-26 Pompe a vide a une ailette Active EP1766237B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004034921A DE102004034921B9 (de) 2004-07-09 2004-07-09 Einflügelvakuumpumpe
PCT/EP2005/004210 WO2006005381A1 (fr) 2004-07-09 2005-04-26 Pompe a vide a une ailette

Publications (2)

Publication Number Publication Date
EP1766237A1 EP1766237A1 (fr) 2007-03-28
EP1766237B1 true EP1766237B1 (fr) 2008-02-20

Family

ID=34964118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05731506A Active EP1766237B1 (fr) 2004-07-09 2005-04-26 Pompe a vide a une ailette

Country Status (6)

Country Link
EP (1) EP1766237B1 (fr)
KR (1) KR101234491B1 (fr)
CN (1) CN100465448C (fr)
CA (1) CA2575778C (fr)
DE (3) DE102004064029B4 (fr)
WO (1) WO2006005381A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005015721B3 (de) * 2005-03-31 2006-12-21 Joma-Hydromechanic Gmbh Vakuumpumpe
DE102006016243A1 (de) * 2006-03-31 2007-10-04 Joma-Hydromechanic Gmbh Rotorpumpe und Flügel für eine Rotorpumpe
US9670928B2 (en) 2007-07-03 2017-06-06 O.M.P. Officine Mazzocco Pagnoni, S.R.L. Vacuum pump for a motor vehicle engine
DE102008002763A1 (de) * 2008-02-01 2009-08-06 Zf Lenksysteme Gmbh Flügelzellenpumpe
DE102008019440A1 (de) 2008-04-17 2009-10-22 FRÖTEK Kunststofftechnik GmbH Flügel einer Flügelzellenpumpe oder eines Flügelzellenkompressors
KR100919253B1 (ko) * 2008-07-03 2009-09-30 한세구 쌍 원통 펌프
DE102009037277B4 (de) * 2009-08-12 2016-02-04 Schwäbische Hüttenwerke Automotive GmbH Regelbare Vakuumpumpe
EP2299055B1 (fr) 2009-09-14 2014-11-12 Pierburg Pump Technology GmbH Pompe à vide à ailettes pour automobile
CN103850937B (zh) * 2012-11-30 2016-08-24 上海华培动力科技有限公司 一种辅助车用制动***的负压装置
DE102015213098B4 (de) * 2015-07-13 2017-05-04 Joma-Polytec Gmbh Flügel für eine Flügelzellenpumpe und Flügelzellenpumpe
CN105090035A (zh) * 2015-07-24 2015-11-25 裕克施乐塑料制品（太仓）有限公司 一种带油槽的真空泵叶片及真空泵

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE364107C (de) * 1922-11-25 Walter Schindler Schmiervorrichtung fuer schnellaufende Drehkoerper
DE198127C (de) * 1906-02-09 1908-05-06 Abdichtung des Kolbens von Kraftmaschinen mit umlaufendem, in der Kolbentrommel verschiebbarem Kolben mittels Keilwirkung
DE2047624A1 (de) * 1970-09-28 1972-05-18 Fa. Wilhelm Reich, 7900 Ulm Flügelzellenpumpe
US4163635A (en) * 1975-06-24 1979-08-07 Nippon Piston Ring Kabushiki Kaisha Vane type rotary fluid pumps or compressors
DE2945488A1 (de) * 1979-11-10 1981-05-21 Barmag Barmer Maschf Verbrennungskraftmaschine mit einer oelpumpe und einer als fluegelzellenpumpe ausgebildeten vakuumpumpe
US4957420A (en) * 1988-04-27 1990-09-18 Nippon Piston Ring Co., Ltd. Vane pump with guide means for regulating movement of vane
IT1229927B (it) * 1988-10-14 1991-09-16 Cipelletti Alberto Cae Pompa a palette.
JP2818207B2 (ja) * 1989-08-04 1998-10-30 株式会社日立製作所 回転機およびその回転機を用いた冷凍装置
DE4332540A1 (de) * 1993-09-24 1995-03-30 Bosch Gmbh Robert Flügelzellenpumpe
EP1055823B1 (fr) * 1998-12-14 2008-02-20 Mitsubishi Denki Kabushiki Kaisha Pompe a vide a ailettes pour automobiles
EP1327778A3 (fr) * 2000-03-15 2003-07-23 Joma-Hydromechanic GmbH Pompe à palettes
DE10046697A1 (de) * 2000-09-21 2002-04-11 Bosch Gmbh Robert Flügel aus Kunststoff für eine Flügelzellen-Vakuumpumpe
KR100426867B1 (ko) * 2001-08-09 2004-04-13 맹혁재 압축기
KR100408152B1 (ko) * 2001-08-14 2003-12-01 주식회사 우성진공 로터리 베인형 진공펌프의 실린더구조
DE10307040A1 (de) * 2003-02-20 2004-09-16 Luk Automobiltechnik Gmbh & Co. Kg Vakuumpumpe

Also Published As

Publication number Publication date
DE102004064029A1 (de) 2007-04-12
KR20070034091A (ko) 2007-03-27
DE102004064029B4 (de) 2008-04-10
WO2006005381A1 (fr) 2006-01-19
CA2575778A1 (fr) 2006-01-19
CN100465448C (zh) 2009-03-04
DE102004034921B9 (de) 2006-04-27
CA2575778C (fr) 2012-11-20
CN101002023A (zh) 2007-07-18
DE502005002932D1 (de) 2008-04-03
DE102004034921B3 (de) 2005-12-29
KR101234491B1 (ko) 2013-02-18
EP1766237A1 (fr) 2007-03-28

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