CH487343A - Rotationsvacuumpumpe mit Schraubenrotoren - Google Patents

Rotationsvacuumpumpe mit Schraubenrotoren

Info

Publication number
CH487343A
CH487343A CH1419568A CH1419568A CH487343A CH 487343 A CH487343 A CH 487343A CH 1419568 A CH1419568 A CH 1419568A CH 1419568 A CH1419568 A CH 1419568A CH 487343 A CH487343 A CH 487343A
Authority
CH
Switzerland
Prior art keywords
vacuum pump
rotary vacuum
screw rotors
rotors
screw
Prior art date
Application number
CH1419568A
Other languages
English (en)
Inventor
Wycliffe Henryk
Dixon Power Basil
Original Assignee
Edwards High Vacuum Int 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 Edwards High Vacuum Int Ltd filed Critical Edwards High Vacuum Int Ltd
Publication of CH487343A publication Critical patent/CH487343A/de

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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • 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
    • F04C18/14—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 toothed rotary pistons
    • F04C18/16—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 toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
CH1419568A 1967-09-21 1968-09-23 Rotationsvacuumpumpe mit Schraubenrotoren CH487343A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4296567 1967-09-21

Publications (1)

Publication Number Publication Date
CH487343A true CH487343A (de) 1970-03-15

Family

ID=10426748

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1419568A CH487343A (de) 1967-09-21 1968-09-23 Rotationsvacuumpumpe mit Schraubenrotoren

Country Status (5)

Country Link
US (1) US3677664A (de)
CH (1) CH487343A (de)
DE (1) DE1728282A1 (de)
FR (1) FR1580766A (de)
GB (1) GB1248031A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166851A3 (en) * 1984-04-11 1986-12-10 Hitachi, Ltd. Screw type vacuum pump

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4076468A (en) * 1970-07-09 1978-02-28 Svenska Rotor Maskiner Aktiebolag Multi-stage screw compressor interconnected via communication channel in common end plate
US4389171A (en) * 1981-01-15 1983-06-21 The Trane Company Gas compressor of the scroll type having reduced starting torque
DE3312117A1 (de) * 1983-04-02 1984-10-04 Leybold-Heraeus GmbH, 5000 Köln Zweiwellen-vakuumpumpe mit innerer verdichtung
FR2562166B1 (fr) * 1984-03-28 1986-07-18 Dba Compresseur volumetrique a vis
US4662826A (en) * 1984-04-20 1987-05-05 Tokico Ltd. Vacuum pump system including serially connected rotary and reciprocating vacuum pumps
US4762469A (en) * 1986-03-03 1988-08-09 American Standard Inc. Rotor anti-reverse rotation arrangement in a screw compressor
JPH0784871B2 (ja) * 1986-06-12 1995-09-13 株式会社日立製作所 真空排気装置
EP0290662B1 (de) * 1987-05-15 1993-03-31 Leybold Aktiengesellschaft Zweiwellenvakuumpumpe mit Schöpfraum
JPH0545827Y2 (de) * 1988-06-24 1993-11-26
US4909716A (en) * 1988-10-19 1990-03-20 Dunham-Bush Screw step drive internal volume ratio varying system for helical screw rotary compressor
GB9125848D0 (en) * 1991-12-04 1992-02-05 Boc Group Plc Improvements in vacuum pumps
JP3593365B2 (ja) * 1994-08-19 2004-11-24 大亜真空株式会社 ねじれ角可変型歯車
DE69610352T2 (de) * 1995-04-19 2001-05-17 Ebara Corp., Tokio/Tokyo Mehrstufige Verdrängungsvakuumpumpe
JP3388657B2 (ja) * 1995-07-21 2003-03-24 アネスト岩田株式会社 オイルフリースクロール真空ポンプ
DE29904410U1 (de) 1999-03-10 2000-07-20 GHH-RAND Schraubenkompressoren GmbH & Co. KG, 46145 Oberhausen Schraubenkompressor
DE19962445A1 (de) * 1999-12-22 2001-06-28 Leybold Vakuum Gmbh Trockenverdichtende Vakuumpumpe mit Gasballasteinrichtung
JP3673744B2 (ja) * 2001-09-27 2005-07-20 大晃機械工業株式会社 真空ポンプ
US6599112B2 (en) * 2001-10-19 2003-07-29 Imperial Research Llc Offset thread screw rotor device
US6719548B1 (en) 2002-10-29 2004-04-13 Imperial Research Llc Twin screw rotor device
GB0401484D0 (en) * 2004-01-23 2004-02-25 Boc Group Plc Screw pump
US8801395B2 (en) * 2008-06-16 2014-08-12 Gardner Denver, Inc. Startup bypass system for a screw compressor
DE102009017886A1 (de) * 2009-04-17 2010-10-21 Oerlikon Leybold Vacuum Gmbh Schraubenvakuumpumpe
JP5499411B2 (ja) * 2011-08-02 2014-05-21 国立大学法人東北大学 ガス排気用ポンプシステム及びガス排気方法
CN105164420B (zh) 2013-05-30 2017-06-16 奥利安机械股份有限公司 双轴旋转泵
BR112017014897B1 (pt) 2015-01-15 2022-10-11 Atlas Copco Airpower, Naamloze Vennootschap Elemento de bomba de vácuo injetado com óleo
WO2016112439A1 (en) * 2015-01-15 2016-07-21 Atlas Copco Airpower, Naamloze Vennootschap Oil-injected vacuum pump element

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519913A (en) * 1943-08-21 1950-08-22 Jarvis C Marble Helical rotary compressor with pressure and volume regulating means
US3129877A (en) * 1956-05-17 1964-04-21 Svenska Rotor Maskiner Ab Rotary piston, positive displacement compressor
US3122308A (en) * 1959-01-27 1964-02-25 Atlas Copco Ab Control devices for motor-driven compressors
GB966529A (en) * 1959-09-01 1964-08-12 Svenska Rotor Maskiner Ab Screw rotor compressor
US3084851A (en) * 1960-02-29 1963-04-09 Svenska Rotor Maskiner Ab Rotary machine
US3093300A (en) * 1961-01-31 1963-06-11 Ingersoll Rand Co Axial flow compressor
US3141604A (en) * 1962-09-26 1964-07-21 Gardner Denver Co Compressor supercharging system
GB1046261A (en) * 1963-02-23 1966-10-19 Howden James & Co Ltd Improvements in or relating to screw air compressors
US3237524A (en) * 1964-11-03 1966-03-01 Svenska Rotor Maskiner Ab Reversible rotary piston motors of the screw rotor type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166851A3 (en) * 1984-04-11 1986-12-10 Hitachi, Ltd. Screw type vacuum pump

Also Published As

Publication number Publication date
DE1728282A1 (de) 1972-08-10
GB1248031A (en) 1971-09-29
FR1580766A (de) 1969-09-05
US3677664A (en) 1972-07-18

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Legal Events

Date Code Title Description
PL Patent ceased