FR2676255B1 - - Google Patents

Info

Publication number
FR2676255B1
FR2676255B1 FR9105575A FR9105575A FR2676255B1 FR 2676255 B1 FR2676255 B1 FR 2676255B1 FR 9105575 A FR9105575 A FR 9105575A FR 9105575 A FR9105575 A FR 9105575A FR 2676255 B1 FR2676255 B1 FR 2676255B1
Authority
FR
France
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 - Lifetime
Application number
FR9105575A
Other languages
French (fr)
Other versions
FR2676255A1 (fr
Inventor
Jean-Marie Crinquette
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
Application filed by Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR9105575A priority Critical patent/FR2676255A1/fr
Publication of FR2676255A1 publication Critical patent/FR2676255A1/fr
Application granted granted Critical
Publication of FR2676255B1 publication Critical patent/FR2676255B1/fr
Granted 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
    • 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
    • F04C29/0035—Equalization of pressure pulses
    • 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
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
    • 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
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • 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
    • F04C2220/12—Dry running

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
FR9105575A 1991-05-07 1991-05-07 Pompe a vide seche rotative, volumetrique sans frottement. Granted FR2676255A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9105575A FR2676255A1 (fr) 1991-05-07 1991-05-07 Pompe a vide seche rotative, volumetrique sans frottement.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9105575A FR2676255A1 (fr) 1991-05-07 1991-05-07 Pompe a vide seche rotative, volumetrique sans frottement.

Publications (2)

Publication Number Publication Date
FR2676255A1 FR2676255A1 (fr) 1992-11-13
FR2676255B1 true FR2676255B1 (no) 1995-02-10

Family

ID=9412596

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9105575A Granted FR2676255A1 (fr) 1991-05-07 1991-05-07 Pompe a vide seche rotative, volumetrique sans frottement.

Country Status (1)

Country Link
FR (1) FR2676255A1 (no)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4746982B2 (ja) * 2005-12-27 2011-08-10 積水化学工業株式会社 単段ルーツ式真空ポンプ及びこの単段ルーツ式真空ポンプを用いた真空式流体搬送システム
ITUB20153710A1 (it) * 2015-08-06 2017-02-06 Jurop S P A Compressore volumetrico a lobi per una attrezzatura e/o un impianto di aspirazione di materiale in forma liquida, solida, polverosa o fangosa

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE623703C (no) *
FR951230A (fr) * 1946-07-11 1949-10-19 Roots Connersville Blower Corp Perfectionnements aux pompes rotatives
US3393770A (en) * 1965-01-04 1968-07-23 C M Sorensen Co Inc Automatic recycling oiler

Also Published As

Publication number Publication date
FR2676255A1 (fr) 1992-11-13

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