DE69002439D1 - METHOD FOR OPERATING A VOLUMETRIC PUMP. - Google Patents

METHOD FOR OPERATING A VOLUMETRIC PUMP.

Info

Publication number
DE69002439D1
DE69002439D1 DE9090120721T DE69002439T DE69002439D1 DE 69002439 D1 DE69002439 D1 DE 69002439D1 DE 9090120721 T DE9090120721 T DE 9090120721T DE 69002439 T DE69002439 T DE 69002439T DE 69002439 D1 DE69002439 D1 DE 69002439D1
Authority
DE
Germany
Prior art keywords
gas
volumetric pump
operating
pumps
molecular mass
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.)
Revoked
Application number
DE9090120721T
Other languages
German (de)
Other versions
DE69002439T2 (en
Inventor
Jean-Marie Crinquette
Eric Taberlet
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=9387014&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69002439(D1) "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
Application granted granted Critical
Publication of DE69002439D1 publication Critical patent/DE69002439D1/en
Publication of DE69002439T2 publication Critical patent/DE69002439T2/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Reciprocating Pumps (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The object of the invention is a volumetric pump comprising a rotor turning in a stator with a given clearance, used for the pumping of a gas or a gas mixture of given molecular mass, characterised in that it comprises means for injecting into the said clearance a gas of higher molecular mass than that of the pumped gas or gas mixture. Applications to vane pumps, Roots pumps, double cylindrical or conical screw pumps, etc. <IMAGE>
DE90120721T 1989-11-02 1990-10-29 Method of operating a volumetric pump. Revoked DE69002439T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8914354A FR2653831A1 (en) 1989-11-02 1989-11-02 VOLUMETRIC PUMP.

Publications (2)

Publication Number Publication Date
DE69002439D1 true DE69002439D1 (en) 1993-09-02
DE69002439T2 DE69002439T2 (en) 1993-11-18

Family

ID=9387014

Family Applications (1)

Application Number Title Priority Date Filing Date
DE90120721T Revoked DE69002439T2 (en) 1989-11-02 1990-10-29 Method of operating a volumetric pump.

Country Status (7)

Country Link
EP (1) EP0426078B1 (en)
JP (1) JPH0730744B2 (en)
AT (1) ATE92159T1 (en)
DE (1) DE69002439T2 (en)
ES (1) ES2042175T3 (en)
FR (1) FR2653831A1 (en)
RU (1) RU1831588C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2691382B1 (en) * 1992-05-22 1994-09-09 Cit Alcatel Pumping installation for pumping an enclosure containing gases mixed with solid particles or liable to generate solid particles or condensates.
DE19819538C2 (en) * 1998-04-30 2000-02-17 Rietschle Werner Gmbh & Co Kg Pressure suction pump
GB0719394D0 (en) * 2007-10-04 2007-11-14 Edwards Ltd A multi stage clam shell vacuum pump
DE102010044918A1 (en) * 2010-09-09 2012-03-15 Oerlikon Leybold Vacuum Gmbh Method for determination of working area of high vacuum pumping system, involves describing maximum amount of gas intakeable into high vacuum pump by upper border lines, and defining area lying below curves as working area
JP5627035B2 (en) * 2012-06-18 2014-11-19 株式会社ササクラ Evaporative air conditioner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB385192A (en) * 1932-05-10 1932-12-22 Otto Becker Junior Improvements in and relating to rotary blowers
SE317154B (en) * 1959-01-15 1969-11-10 Svenska Rotor Maskiner Ab
JPS5517236A (en) * 1978-07-19 1980-02-06 Mitsubishi Electric Corp Manufacturing method of mica plate for commutator segment
JP2515831B2 (en) * 1987-12-18 1996-07-10 株式会社日立製作所 Screen vacuum pump

Also Published As

Publication number Publication date
FR2653831A1 (en) 1991-05-03
ES2042175T3 (en) 1993-12-01
DE69002439T2 (en) 1993-11-18
EP0426078B1 (en) 1993-07-28
EP0426078A1 (en) 1991-05-08
JPH0730744B2 (en) 1995-04-10
RU1831588C (en) 1993-07-30
JPH03160185A (en) 1991-07-10
ATE92159T1 (en) 1993-08-15

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation