EP0144888B1 - Ölgedichtete Flügelkolbenpumpe - Google Patents

Ölgedichtete Flügelkolbenpumpe Download PDF

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Publication number
EP0144888B1
EP0144888B1 EP84114285A EP84114285A EP0144888B1 EP 0144888 B1 EP0144888 B1 EP 0144888B1 EP 84114285 A EP84114285 A EP 84114285A EP 84114285 A EP84114285 A EP 84114285A EP 0144888 B1 EP0144888 B1 EP 0144888B1
Authority
EP
European Patent Office
Prior art keywords
stator
oil
tank
shell
pump
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.)
Expired
Application number
EP84114285A
Other languages
English (en)
French (fr)
Other versions
EP0144888A3 (en
EP0144888A2 (de
Inventor
Jean-Marc Paquet
René Sibuet
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9294702&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0144888(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to AT84114285T priority Critical patent/ATE32123T1/de
Publication of EP0144888A2 publication Critical patent/EP0144888A2/de
Publication of EP0144888A3 publication Critical patent/EP0144888A3/fr
Application granted granted Critical
Publication of EP0144888B1 publication Critical patent/EP0144888B1/de
Expired 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02—Liquid sealing for high-vacuum pumps or for compressors

Definitions

  • the present invention relates to a vane oil seal pump.
  • Such a pump essentially comprises a stator constituted by a body comprising a cylindrical housing in which rotates eccentrically, tangentially to a generator of said housing, a rotor also cylindrical.
  • the rotor carries two diametrically opposite vanes applied by springs against the stator (and by centrifugal force).
  • a suction orifice and a discharge orifice open into the stator respectively on either side of the tangent generator of the stator and of the rotor.
  • the discharge port is fitted with a non-return valve.
  • the seat of this valve is formed by the bottom of a counterbore made in the stator. the assembly is placed in a closed tank, filled with oil.
  • the suction orifice is connected to a conduit opening out of said tank while the delivery orifice opens into the tank, which itself has an outlet orifice.
  • a comparable pump is known from GB-A-1 140 452.
  • the entry of oil into the stator, for lubrication and sealing between the vanes and the stator and between the rotor and its line of tangency with the stator, is carried out by an injection orifice on a lateral flange closing the stator.
  • This orifice is provided with a closing valve set in alternating opening and closing movement, during the operation of the pump, by means of a rotary device secured to the axis of the rotor.
  • This shut-off valve prevents oil from entering the stator during periods when the pump is stopped.
  • the stator will fill with oil and the next time the pump is started, a large amount of oil is expelled through the discharge port.
  • the passage section between the valve, located at the discharge orifice and the walls of the counterbore in which the valve is placed is small and insufficient for the passage of such a flow of oil, which causes deterioration of the valve and possibly its spring: risk of deformation, jamming, etc.
  • the present invention aims to overcome the drawback described above and relates to a vane oil seal pump comprising a stator and a rotor, the assembly being located in a closed tank containing oil , the stator comprising an oil injection orifice, a suction orifice connected to a pipe opening out of said tank and a delivery orifice opening into the tank, the delivery orifice being provided with an anti-valve return, said valve being housed in a counterbore made in the stator, said tank further comprising a discharge orifice, characterized in that at least one groove is formed in said stator, this groove opening into said counterbore.
  • said groove opens into said counterbore at a level very slightly higher than the bottom of said counterbore.
  • this groove starts from the periphery of the stator, opens into said counterbore and extends beyond the diametrically opposite wall of the counterbore.
  • FIG. 1 which shows a well known oil seal vane pump
  • a stator 1 a rotor 2 eccentric so as to be tangent to a generator G of the stator.
  • the rotor carries sliding vanes 3 and 4 actuated by springs 5 and by centrifugal force.
  • the assembly is placed in a tank 6 full of oil 7.
  • the stator has a suction port 8 connected to a pipe 9 opening out of the tank 6; it further comprises a discharge orifice 10 opening directly into the tank.
  • This discharge orifice is provided with a non-return valve 11, the seat of which is located at the bottom of a circular counterbore 12.
  • the valve 11 rests on the bottom of the counterbore 2 by the thrust of a spring 13 on the other hand bearing against a valve cover 14 fixed to the lateral flanges of the stator.
  • the tank 6 also has an outlet 15 for delivery.
  • the rotor is rotated in the direction indicated by arrow F by a motor (not shown) located against one of the two lateral flanges of the stator.
  • the other lateral flange 16 shown diagrammatically in FIG. 2 comprises the oil supply system for the stator. It comprises a turnstile 17. This turnstile is fixed on the rotor shaft at 18, this fixing allowing a slight rotation of the turnstile around the point 18. Furthermore, the point 18 is eccentric relative to the center 19 of the turnstile. At rest, the center 19 of the turnstile coincides with the axis of the rotor.
  • the counterbore 12 is necessary because it serves as an oil retaining bowl ensuring the tightness of the valve. This violent ejection and the little space left for the oil causes damage to the valve and the spring.
  • This groove opens into the counterbore 12 at a level very slightly higher than the bottom of this counterbore so as to allow a slight retention of oil for sealing.
  • this groove 24 extends at 25 beyond the diametrically opposite wall of the counterbore.
  • Figure 4 shows the clearance groove 24, 25 in top view.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Compressor (AREA)
  • Mechanical Sealing (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Claims (3)

1. Drehschieberpumpe mit Öldichtung, bestehend aus einem Stator (1) und einem Rotor (2), wobei das Ganze in einem geschlossenen Ölbehälter (6) sitzt und der Stator eine Ölinjektionsöffnung, eine Ansaugöffnung, die an eine aus dem Behälter hinausführende Leitung angeschlossen ist, und eine Auslaßöffnung (10), die in den Behälter mündet, aufweist, wobei die Auslaßöffnung ein Rückschlagventil (11) enthält, das in einer im Stator ausgebildeten Vertiefung (12) sitzt, wobei der Behälter außerdem eine Ausgangsöffnung besitzt, dadurch gekennzeichnet, daß mindestens eine Rille (24, 25) in den Stator (1) eingeschnitten ist, die in diese Vertiefung (12) mündet.
2. Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß diese Rille in die Vertiefung in einer nur geringfügig über dem Boden der Vertiefung liegenden Höhe mündet.
3. Pumpe nach Anspruch 2, dadurch gekennzeichnet, daß die Rille (24) an der Peripherie des Stators beginnt, in die Vertiefung (12) mündet, und sich über die diametral gegenüberliegende Wand der Vertiefung hinaus verlängert.
EP84114285A 1983-11-30 1984-11-27 Ölgedichtete Flügelkolbenpumpe Expired EP0144888B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114285T ATE32123T1 (de) 1983-11-30 1984-11-27 Oelgedichtete fluegelkolbenpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8319148 1983-11-30
FR8319148A FR2555674B1 (fr) 1983-11-30 1983-11-30 Pompe a joint d'huile a palettes

Publications (3)

Publication Number Publication Date
EP0144888A2 EP0144888A2 (de) 1985-06-19
EP0144888A3 EP0144888A3 (en) 1985-07-17
EP0144888B1 true EP0144888B1 (de) 1988-01-20

Family

ID=9294702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114285A Expired EP0144888B1 (de) 1983-11-30 1984-11-27 Ölgedichtete Flügelkolbenpumpe

Country Status (7)

Country Link
US (1) US4575322A (de)
EP (1) EP0144888B1 (de)
JP (1) JPS60135688A (de)
AT (1) ATE32123T1 (de)
BG (1) BG51054A3 (de)
DE (1) DE3468919D1 (de)
FR (1) FR2555674B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19526321A1 (de) * 1995-07-19 1997-01-23 Leybold Ag Ölgedichtete Drehschiebervakuumpumpe mit Ölpumpe
KR100393347B1 (ko) * 2000-08-17 2003-07-31 맹혁재 두 날개의 베인을 이용한 유체압축 및 동력전환장치
KR100395373B1 (ko) * 2000-09-04 2003-08-21 맹혁재 압축기
ITTO20040268A1 (it) * 2004-04-30 2004-07-30 Varian Spa Pompa da vuoto meccanica rotativa ad olio e metodo di produzione di detta pompa
KR100914241B1 (ko) * 2008-12-08 2009-08-26 주식회사 신우 베인펌프장치
JP2012122450A (ja) * 2010-12-10 2012-06-28 Kobe Steel Ltd スクリュ圧縮機
US9212662B2 (en) * 2013-04-29 2015-12-15 Ford Global Technologies, Llc Check valve for an engine vacuum pump
US9617864B2 (en) * 2014-07-21 2017-04-11 United Technologies Corporation Seal assembly for a guide vane assembly
JP6531736B2 (ja) * 2016-07-29 2019-06-19 ダイキン工業株式会社 海上輸送用冷凍又は冷蔵コンテナユニット

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154880A (en) * 1935-12-24 1939-04-18 Landers Frary & Clark Valve
DE661031C (de) * 1936-03-27 1938-06-09 Wolfgang Gaede Dr Saugpumpe mit oelueberdecktem Auslassventil zur Erzeugung tiefer Druecke
DE1293388B (de) * 1960-12-08 1969-04-24 Buerger Herbert Drehkolbenvakuumpumpe mit oelgedichtetem Gehaeuse und vertikaler Anordnung des Rotors und der Welle
GB1140452A (en) * 1966-03-16 1969-01-22 Edwards High Vacuum Int Ltd Improvements relating to liquid sealed mechanical vacuum pumps
DE2002076A1 (de) * 1970-01-19 1971-07-29 Borsig Gmbh Druckseitiges Ventil eines Kreiskolbenverdichters
JPS5440483U (de) * 1977-08-25 1979-03-17

Also Published As

Publication number Publication date
EP0144888A3 (en) 1985-07-17
US4575322A (en) 1986-03-11
JPS60135688A (ja) 1985-07-19
FR2555674A1 (fr) 1985-05-31
BG51054A3 (en) 1993-01-15
ATE32123T1 (de) 1988-02-15
EP0144888A2 (de) 1985-06-19
FR2555674B1 (fr) 1986-03-28
DE3468919D1 (en) 1988-02-25

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