JPH0368237B2 - - Google Patents

Info

Publication number
JPH0368237B2
JPH0368237B2 JP61118967A JP11896786A JPH0368237B2 JP H0368237 B2 JPH0368237 B2 JP H0368237B2 JP 61118967 A JP61118967 A JP 61118967A JP 11896786 A JP11896786 A JP 11896786A JP H0368237 B2 JPH0368237 B2 JP H0368237B2
Authority
JP
Japan
Prior art keywords
pump
chamber
pump chamber
mechanical
duct
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
JP61118967A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6217389A (ja
Inventor
Uikurifu Henriku
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 JPS6217389A publication Critical patent/JPS6217389A/ja
Publication of JPH0368237B2 publication Critical patent/JPH0368237B2/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
    • 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
    • F04C29/0028—Internal leakage control
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
JP61118967A 1985-05-30 1986-05-23 機械ポンプ Granted JPS6217389A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8513684 1985-05-30
GB858513684A GB8513684D0 (en) 1985-05-30 1985-05-30 Mechanical pumps

Publications (2)

Publication Number Publication Date
JPS6217389A JPS6217389A (ja) 1987-01-26
JPH0368237B2 true JPH0368237B2 (ko) 1991-10-25

Family

ID=10579927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61118967A Granted JPS6217389A (ja) 1985-05-30 1986-05-23 機械ポンプ

Country Status (5)

Country Link
JP (1) JPS6217389A (ko)
DE (1) DE3617889A1 (ko)
FR (1) FR2582741A1 (ko)
GB (2) GB8513684D0 (ko)
IT (1) IT1188739B (ko)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62153592A (ja) * 1985-12-26 1987-07-08 Ulvac Corp ２段ガスバラストポンプの減圧軸封装置
JPS63239389A (ja) * 1987-03-25 1988-10-05 Anretsuto:Kk 半割り型ケ−シング使用の多段式ル−ツロ−タの軸シ−ル
NL9001875A (nl) * 1990-07-17 1992-02-17 Bombas Stork S A Lobbenrotorpomp.
JP2533605Y2 (ja) * 1991-03-29 1997-04-23 株式会社島津製作所 位相差ポンプ
DE19756838C1 (de) * 1997-12-19 1999-04-15 K Busch Gmbh Druck & Vakuum Dr Drehkolbenpumpe
JP2002221177A (ja) * 2001-01-24 2002-08-09 Toyota Industries Corp 真空ポンプにおける軸封構造
JP2008008302A (ja) * 2001-09-06 2008-01-17 Ulvac Japan Ltd 多段式容積移送型ドライ真空ポンプの省エネ方法
JP2004278381A (ja) * 2003-03-14 2004-10-07 Toyota Industries Corp ギヤポンプ
GB0515905D0 (en) 2005-08-02 2005-09-07 Boc Group Plc Vacuum pump
DE202011104491U1 (de) * 2011-08-17 2012-11-20 Oerlikon Leybold Vacuum Gmbh Wälzkolbenpumpe
FR3094762B1 (fr) * 2019-04-05 2021-04-09 Pfeiffer Vacuum Pompe à vide de type sèche et installation de pompage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104588A (en) * 1979-02-02 1980-08-11 Shin Meiwa Ind Co Ltd Underwater blower

Family Cites Families (14)

* 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
DE415913C (de) * 1922-04-01 1925-07-10 Siemens Schuckertwerke G M B H Einrichtung an Drehkolbenpumpen fuer gasfoermige Koerper zur Verminderung der Undichtigkeitsverluste durch Umstroemen
GB790799A (en) * 1955-08-15 1958-02-19 Edwards High Vacuum Ltd Improvements in or relating to multi-stage rotary vacuum pumps
SE302815B (ko) * 1965-01-13 1968-08-05 Svenska Rotor Maskiner Ab
US3976405A (en) * 1974-10-29 1976-08-24 Cominco Ltd. Pump
JPS5163506U (ko) * 1974-11-15 1976-05-19
GB1570512A (en) * 1976-09-04 1980-07-02 Howden Compressors Ltd Meshing-screw gas-compressing apparatus
JPS5468510A (en) * 1977-11-11 1979-06-01 Kobe Steel Ltd Gas leak preventive method for self-lubricating screw compressor
DE2754612A1 (de) * 1977-12-08 1979-06-13 Allweiler Ag Schraubenspindelpumpe
US4199304A (en) * 1978-03-13 1980-04-22 Ford Motor Company Positive displacement compact slipper pump
GB2088957B (en) * 1980-12-05 1984-12-12 Boc Ltd Rotary positive-displacement fluidmachines
DE3047699A1 (de) * 1980-12-18 1982-07-01 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Waelzkolbenpumpe mit druckausgleichskammer
GB2111126A (en) * 1981-12-09 1983-06-29 British Oxygen Co Ltd Rotary positive-displacement fluid-machines
JPS59213984A (ja) * 1983-05-20 1984-12-03 Nippon Piston Ring Co Ltd ベ−ン形回転圧縮機の軸受装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104588A (en) * 1979-02-02 1980-08-11 Shin Meiwa Ind Co Ltd Underwater blower

Also Published As

Publication number Publication date
IT1188739B (it) 1988-01-28
DE3617889A1 (de) 1986-12-04
DE3617889C2 (ko) 1991-03-14
FR2582741A1 (fr) 1986-12-05
GB8513684D0 (en) 1985-07-03
IT8620580A0 (it) 1986-05-27
GB8611363D0 (en) 1986-06-18
IT8620580A1 (it) 1987-11-27
JPS6217389A (ja) 1987-01-26
GB2175956A (en) 1986-12-10

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