EP1766241B1 - Pompe a vide a une ailette - Google Patents

Pompe a vide a une ailette Download PDF

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Publication number
EP1766241B1
EP1766241B1 EP05758990A EP05758990A EP1766241B1 EP 1766241 B1 EP1766241 B1 EP 1766241B1 EP 05758990 A EP05758990 A EP 05758990A EP 05758990 A EP05758990 A EP 05758990A EP 1766241 B1 EP1766241 B1 EP 1766241B1
Authority
EP
European Patent Office
Prior art keywords
rotor
vacuum pump
circumferential surface
inner circumferential
recess
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
EP05758990A
Other languages
German (de)
English (en)
Other versions
EP1766241A1 (fr
Inventor
Willi Schneider
Martin Thoma
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
Original Assignee
Joma Hydromechanic GmbH
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Filing date
Publication date
Application filed by Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP1766241A1 publication Critical patent/EP1766241A1/fr
Application granted granted Critical
Publication of EP1766241B1 publication Critical patent/EP1766241B1/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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2250/00—Geometry
    • F04C2250/30—Geometry of the stator
    • F04C2250/301—Geometry of the stator compression chamber profile defined by a mathematical expression or by parameters

Definitions

  • the invention relates to a single-wing vacuum pump with a cup-shaped housing, a rotor rotatably mounted eccentrically in the housing, and a rotatably mounted in the rotor orthogonal to the axis of rotation wings, which rests with its wing tips on a working space defining inner peripheral surface.
  • Vacuum pumps with such a construction are made, for example DE 18 13 132 A1 known. They have a housing in which a rotor is mounted, wherein the rotor is located within a working space. This working space is subdivided by a rotor displaceably mounted in the rotor in a suction chamber and a pressure chamber. In addition, the rotor is arranged in the working space such that it touches the inner peripheral surface of the working space with its circular cylindrical peripheral surface. In the immediate vicinity of this contact point are the inlet and the outlet of the pump. The suction chamber is thus formed by the edge of a wing tip and this point of contact. This has the consequence that the suction chamber increases as the rotor rotates until the next wing tip sweeps over the inlet.
  • the invention is therefore based on the object to provide a single-wing vacuum pump of the type mentioned above, which has a better seal of the suction chamber.
  • the critical point at which the rotor contacts the inner peripheral surface of the working space designed so that not only a linear contact takes place, but that the inner peripheral surface extends over a part of its circumference along the rotor or at this snugly.
  • the inner peripheral surface is bulged over a part of its circumference radially inwardly in the direction of the rotor or offset radially away from the axis of rotation of the rotor, wherein the rotor then engages in this back staggered part.
  • the part of the inner peripheral surface is provided with a recess.
  • this recess engages the peripheral surface of the rotor, so that the rotor via a peripheral portion corresponding to this recess, abuts the inner peripheral surface, said peripheral portion is the seal.
  • the recess may have a smooth or a structured surface, in particular be provided with transverse to the direction of the rotor sealing lips. As a result, a labyrinth seal is created.
  • the recess has a radius which is less than or equal to the radius of the adjacent rotor. At the same radius a relatively constant sealing gap is created, which is sealed by oil. In the other case the sealing gap changes the gap height over its width, wherein sealing edges are produced at the ends of the sealing gap.
  • the recess is designed partially cylindrical, wherein the radius of this part of the cylinder is greater by the height of the sealing gap than the radius of the rotor.
  • a harmonious course and thus a simple production of the inner peripheral surface is achieved in that the transition of the part of the inner peripheral surface to the rest of the peripheral surface is continuous.
  • the part of the inner circumferential surface and the remaining inner peripheral surface at the transition may have the same tangents.
  • the bulged portion of the inner peripheral surface is formed in cross-section M- or W-shaped.
  • the suction opening and / or the outlet opening is in the bulged, not covered by the rotor part of the inner peripheral surface.
  • the intake opening provided in this part offers the advantage that the start of suction can already begin with a small volume. So the suction chamber does not work against a vacuum at the beginning.
  • the outlet opening provided in the uncovered part of the inner circumferential surface has the advantage that it is slightly set because the outer flank of the M or W shape of the part of the inner circumferential surface protrudes slightly radially inward.
  • 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.
  • a generally designated 18 rotor in which a wing 20 is mounted orthogonal to the axis of rotation 21 slidably.
  • the rotor 18 has a rotor housing 24, with which it bears against an inner peripheral surface 22 of a working space 30.
  • the rotor 18 passes through the bottom of the housing 12 via a drive opening and protrudes on the back of the housing 12 out so that it (by means of a drive, not shown) can be offset in the direction of rotation.
  • the drive opening is provided with suitable sealing means so that neither lubricant can escape nor air and / or dirt can enter the interior 16.
  • the interior 16 is divided by the wing 20 into a suction chamber 40 and a pressure chamber 42.
  • the rotor 18 bears against the rotor 18 in the region of a part of the inner circumferential surface 22 designated as a whole by 32. This part 32 is located in the housing wall 36, which has a greater thickness there.
  • FIG. 2 shows an enlarged illustration of the section II according to FIG. 1 with a plan view of the inner peripheral surface 22, along which the edges 34 of the wing tips 44 slide.
  • the rotor 18 rotates in the direction of the arrow 46 (see FIG. 1).
  • the part 32 is marked, which bulges radially in the direction of the rotor 18, which is not shown in Figure 2, in the interior 16.
  • the part 32 is M- or W-shaped and has a rising edge 46 and a falling edge 48, which merge smoothly into the rest of the inner peripheral surface 22. Between the two flanks 46 and 48 there is a recess 50, which jumps back radially.
  • the radius of this recess 50 is equal to or slightly smaller than the radius of the rotor housing 24. At this recess 50, the rotor housing 24 of the rotor 18 abuts and forms a sealing gap which is filled with lubricant.
  • An embodiment also provides that in the rising surface 46, an outlet opening 52 and in the falling edge 48, a suction port 54 are provided, wherein the suction port 54 is connected to the suction port 14.

Landscapes

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

Claims (7)

  1. Pompe à vide monoailette (10) comprenant un boîtier (12) en forme de pot, un rotor (18) fixé de façon excentrée de façon à pouvoir tourner dans le boîtier (12), et une ailette (20) fixée dans le rotor (18) de façon à pouvoir coulisser perpendiculairement à l'axe de rotation (21), laquelle ailette s'applique avec ses extrémités (44) sur une surface périphérique intérieure (22) limitant un espace de travail (16), une partie (32) de la surface périphérique intérieure (22) étant pré-incurvée radialement vers l'intérieur en direction du rotor (18) ou étant décalée en arrière radialement vers l'extérieur à partir de l'axe de rotation (21) du rotor (18), caractérisée en ce que la partie (32) de la surface périphérique intérieure (22) est dotée d'un évidement (50).
  2. Pompe à vide monoailette selon la revendication 1, caractérisée en ce que l'évidement (50) présente un rayon qui est inférieur ou égal au rayon du rotor (18) voisin.
  3. Pompe à vide monoailette selon la revendication 1 ou 2, caractérisée en ce que l'évidement (50) est formé de façon concave.
  4. Pompe à vide monoailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'évidement (50) est en forme de cylindre partiel.
  5. Pompe à vide monoailette selon l'une quelconque des revendications précédentes, caractérisée en ce que le transfert de la partie (32) de la surface périphérique intérieure (22) à la surface périphérique intérieure (22) restante s'effectue de façon continue.
  6. Pompe à vide monoailette selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie (32) pré-incurvée de la surface périphérique intérieure (22) est réalisée en section en forme de M ou W.
  7. Pompe à vide monoailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'ouverture d'aspiration (54) et/ou l'ouverture d'évacuation (52) est/sont prévue(s) dans la partie (32) pré-incurvée, non recouverte par le rotor (18), de la surface périphérique intérieure (22).
EP05758990A 2004-07-09 2005-04-20 Pompe a vide a une ailette Active EP1766241B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410034920 DE102004034920B3 (de) 2004-07-09 2004-07-09 Einflügelvakuumpumpe
PCT/EP2005/004211 WO2006005382A1 (fr) 2004-07-09 2005-04-20 Pompe a vide a une ailette

Publications (2)

Publication Number Publication Date
EP1766241A1 EP1766241A1 (fr) 2007-03-28
EP1766241B1 true EP1766241B1 (fr) 2007-11-21

Family

ID=34978801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05758990A Active EP1766241B1 (fr) 2004-07-09 2005-04-20 Pompe a vide a une ailette

Country Status (3)

Country Link
EP (1) EP1766241B1 (fr)
DE (2) DE102004034920B3 (fr)
WO (1) WO2006005382A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010031505A2 (fr) * 2008-09-16 2010-03-25 Ixetic Hückeswagen Gmbh Pompe à vide

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH154275A (de) * 1931-01-14 1932-04-30 Sulzer Ag Drehkolbenmaschine mit sichelförmigem Arbeitsraum.
US2149337A (en) * 1934-12-11 1939-03-07 Deming Rotary Pump Company Rotary pump
FR1034534A (fr) * 1950-03-31 1953-07-27 Intra Ind Termotecnica Relais Pompe rotative à éléments d'étanchéité élastiques
US2714876A (en) * 1951-07-26 1955-08-09 Reed Roller Bit Co Fluid actuated vane type motor
US2901974A (en) * 1955-05-13 1959-09-01 Cav Ltd Liquid fuel injection pumps for internal combustion engines
IE34277B1 (en) * 1968-09-12 1975-04-02 Ostberg Bernhard Nils Vane-type rotary positive-displacement pumps and compressors
US3652191A (en) * 1970-06-22 1972-03-28 Trw Inc Compressor
DE3219757A1 (de) * 1982-05-26 1983-12-01 Volkswagenwerk Ag, 3180 Wolfsburg Dichtungsanordnung
US4737090A (en) * 1985-05-30 1988-04-12 Nippondenso Co., Ltd. Movable vane compressor
DE3813132A1 (de) * 1987-05-19 1988-12-15 Barmag Barmer Maschf Fluegelzellenpumpe
JP2706105B2 (ja) * 1988-10-15 1998-01-28 株式会社豊田自動織機製作所 ベーン圧縮機
JPH0778393B2 (ja) * 1988-10-26 1995-08-23 株式会社豊田自動織機製作所 ベーン圧縮機
DE8914705U1 (de) * 1989-12-14 1990-08-30 Albert Handtmann Maschinenfabrik GmbH & Co KG, 7950 Biberach Flügelzellenpumpe zum Fördern von pasteusen Massen, insbesondere von Wurstbrät
US5181843A (en) * 1992-01-14 1993-01-26 Autocam Corporation Internally constrained vane compressor
GB2332481B (en) * 1997-12-16 2002-06-05 James Wayne Hyland A heart-shaped pump
KR19990072320A (ko) * 1998-02-02 1999-09-27 나카무라 시게오 베인-타입유체기계

Also Published As

Publication number Publication date
WO2006005382A1 (fr) 2006-01-19
DE502005002062D1 (de) 2008-01-03
EP1766241A1 (fr) 2007-03-28
DE102004034920B3 (de) 2005-12-01

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