JPH0433997B2 - - Google Patents

Info

Publication number
JPH0433997B2
JPH0433997B2 JP56195514A JP19551481A JPH0433997B2 JP H0433997 B2 JPH0433997 B2 JP H0433997B2 JP 56195514 A JP56195514 A JP 56195514A JP 19551481 A JP19551481 A JP 19551481A JP H0433997 B2 JPH0433997 B2 JP H0433997B2
Authority
JP
Japan
Prior art keywords
pump
rotor
outlet
fluid
pump chamber
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 - Lifetime
Application number
JP56195514A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57146093A (en
Inventor
Waikuritsufu Henritsuku
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.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
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 BOC Group Ltd filed Critical BOC Group Ltd
Publication of JPS57146093A publication Critical patent/JPS57146093A/ja
Publication of JPH0433997B2 publication Critical patent/JPH0433997B2/ja
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
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary-Type Compressors (AREA)
  • Rotary Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
JP19551481A 1980-12-05 1981-12-04 Mechanical pump Granted JPS57146093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8039073A GB2088957B (en) 1980-12-05 1980-12-05 Rotary positive-displacement fluidmachines

Publications (2)

Publication Number Publication Date
JPS57146093A JPS57146093A (en) 1982-09-09
JPH0433997B2 true JPH0433997B2 (de) 1992-06-04

Family

ID=10517780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19551481A Granted JPS57146093A (en) 1980-12-05 1981-12-04 Mechanical pump

Country Status (4)

Country Link
JP (1) JPS57146093A (de)
DE (1) DE3147824C2 (de)
FR (1) FR2495701B1 (de)
GB (1) GB2088957B (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2111126A (en) * 1981-12-09 1983-06-29 British Oxygen Co Ltd Rotary positive-displacement fluid-machines
US4504201A (en) * 1982-11-22 1985-03-12 The Boc Group Plc Mechanical pumps
DE3463550D1 (en) * 1983-02-15 1987-06-11 Zimmermann Otto Rotary piston engine
DE3312117A1 (de) * 1983-04-02 1984-10-04 Leybold-Heraeus GmbH, 5000 Köln Zweiwellen-vakuumpumpe mit innerer verdichtung
JPS61252889A (ja) * 1985-04-23 1986-11-10 Anretsuto:Kk 多段式高圧用ル−ツブロワ−
GB8513684D0 (en) * 1985-05-30 1985-07-03 Boc Group Plc Mechanical pumps
GB2185288A (en) * 1986-01-11 1987-07-15 Fleming Thermodynamics Ltd Screw type compression and expansion machine
JPS6319090U (de) * 1986-07-23 1988-02-08
EP0409287B1 (de) * 1987-05-15 1994-04-06 Leybold Aktiengesellschaft Vakuumpumpe mit Schöpfraum
EP0290664B1 (de) * 1987-05-15 1991-12-27 Leybold Aktiengesellschaft Zweiwellenpumpe
DE3786917D1 (de) * 1987-05-15 1993-09-09 Leybold Ag Ein- oder mehrstufige zweiwellenvakuumpumpe.
JPS6477782A (en) * 1987-09-19 1989-03-23 Ebara Corp Rotary machine of roots type
US4943215A (en) * 1988-02-29 1990-07-24 Leybold Aktiengesellschaft Multistage vacuum pump with bore for fouling removal
GB8808608D0 (en) * 1988-04-12 1988-05-11 Boc Group Plc Dry pump with booster
GB8809621D0 (en) * 1988-04-22 1988-05-25 Boc Group Plc Dry pump with closed loop filter
EP0448750B1 (de) 1990-03-27 1996-05-01 Leybold Aktiengesellschaft Mehrstufige trockenverdichtende Vakuumpumpe und Verfahren zu ihrem Betrieb
DE19503716C1 (de) * 1995-02-04 1996-03-28 K Busch Gmbh Druck & Vakuum Dr Zweiwellige Drehkolbenpumpe zur gleichzeitigen Erzeugung von Unterdruck und von Überdruck
DE19809957A1 (de) * 1998-03-07 1999-09-09 Pfeiffer Vacuum Gmbh Mehrwellenvakuumpumpe
JP2000170679A (ja) * 1998-12-04 2000-06-20 Toyota Autom Loom Works Ltd 多段ルーツポンプ及び多段ポンプ装置
GB9902083D0 (en) 1999-01-29 1999-03-24 Boc Group Plc Vacuum pump systems
JP3758550B2 (ja) 2001-10-24 2006-03-22 アイシン精機株式会社 多段真空ポンプ
JP3941484B2 (ja) * 2001-12-03 2007-07-04 アイシン精機株式会社 多段式真空ポンプ
US6666666B1 (en) * 2002-05-28 2003-12-23 Denis Gilbert Multi-chamber positive displacement fluid device
DE202017001029U1 (de) * 2017-02-17 2018-05-18 Leybold Gmbh Mehrstufige Wälzkolbenpumpe
CN107420306B8 (zh) * 2017-09-13 2021-10-08 上海伊莱茨真空技术有限公司 三轴模块化干式真空泵
KR102254882B1 (ko) * 2020-06-01 2021-05-24 한국원자력연구원 유체 이송 장치

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338882U (de) * 1976-09-09 1978-04-05

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB596064A (en) * 1945-07-17 1947-12-24 Stothert & Pitt Ltd Improvements in or relating to rotary pumps
US1743583A (en) * 1927-04-18 1930-01-14 Wiltse Appliance Co Pump
AT140808B (de) * 1933-06-07 1935-02-25 Franz Dr Ing Heinl Maschine mit umlaufenden Kolben.
GB479199A (en) * 1936-08-01 1938-02-01 Edward Dodson Improvements in or connected with rotary pumps
GB877023A (en) * 1958-10-27 1961-09-13 Hidekuni Yokota Improvements in or relating to rotary fluid prime movers
GB1248032A (en) * 1967-09-21 1971-09-29 Edwards High Vacuum Int Ltd Rotary mechanical vacuum pumps of the intermeshing screw type
DE2007880A1 (de) * 1970-02-20 1971-09-02 Brown, Arthur Corning N Y (VStA) Rotationsverdrangungsmaschine
JPS47218U (de) * 1971-10-05 1972-05-22
JPS5267810A (en) * 1975-12-03 1977-06-04 Aisin Seiki Co Ltd High vacuum pump
CH621854A5 (en) * 1977-06-06 1981-02-27 Balzers Hochvakuum Roots pump
JPS55144885U (de) * 1979-04-04 1980-10-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338882U (de) * 1976-09-09 1978-04-05

Also Published As

Publication number Publication date
GB2088957A (en) 1982-06-16
DE3147824C2 (de) 1995-03-23
DE3147824A1 (de) 1982-06-24
FR2495701A1 (fr) 1982-06-11
GB2088957B (en) 1984-12-12
JPS57146093A (en) 1982-09-09
FR2495701B1 (fr) 1987-12-18

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