GB1313506A - Vapour vacuum pumps - Google Patents

Vapour vacuum pumps

Info

Publication number
GB1313506A
GB1313506A GB1313506DA GB1313506A GB 1313506 A GB1313506 A GB 1313506A GB 1313506D A GB1313506D A GB 1313506DA GB 1313506 A GB1313506 A GB 1313506A
Authority
GB
United Kingdom
Prior art keywords
baffles
vapour
nozzle
jet assembly
vacuum pumps
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
Application number
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.)
Edwards High Vacuum International Ltd
Original Assignee
Edwards High Vacuum International 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 International Ltd filed Critical Edwards High Vacuum International Ltd
Publication of GB1313506A publication Critical patent/GB1313506A/en
Expired 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
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F9/00—Diffusion pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

1313506 Diffusion pumps EDWARDS HIGH VACUUM INTERNATIONAL Ltd 4 May 1970 [7 May 1969] 23382/69 Heading F1E A diffusion pump comprises a gas inlet 16 having an isolation valve 18 and a fluid-cooled casing 8 which has an enlarged portion surrounding the top-most nozzle 2 of a jet assembly 6 to increase volumetric pumping speed, and containing baffles or traping surfaces to reduce backstreaming. The valve 18 and the baffles 14 or vapour trap may be dismantled to provide access to the jet assembly 6. The baffles 14 may have one or more cooled guard rings to limit the solid angle through which vapour is emitted from the nozzle 2.
GB1313506D 1969-05-07 1969-05-07 Vapour vacuum pumps Expired GB1313506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2338269 1969-05-07

Publications (1)

Publication Number Publication Date
GB1313506A true GB1313506A (en) 1973-04-11

Family

ID=10194735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1313506D Expired GB1313506A (en) 1969-05-07 1969-05-07 Vapour vacuum pumps

Country Status (2)

Country Link
FR (1) FR2047445A5 (en)
GB (1) GB1313506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635941A1 (en) * 1985-10-23 1987-06-19 Boc Group Plc Cryopump

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2233879A5 (en) * 1973-06-15 1975-01-10 British Oxygen Co Ltd

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080421A (en) * 1935-06-21 1937-05-18 Eastman Kodak Co Vacuum pump
US2386299A (en) * 1944-07-03 1945-10-09 Nat Res Corp Diffusion pump
DE1279279B (en) * 1962-10-12 1968-10-03 Leybold Heraeus Gmbh & Co Kg Multi-stage propellant pump
GB1066971A (en) * 1963-05-30 1967-04-26 Edwards High Vacuum Int Ltd Improvements in or relating to vacuum pumps
FR1471414A (en) * 1966-03-10 1967-03-03 Nat Res Corp Diffusion pump
CH456834A (en) * 1967-08-04 1968-05-31 Balzers Patent Beteilig Ag Vacuum valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635941A1 (en) * 1985-10-23 1987-06-19 Boc Group Plc Cryopump

Also Published As

Publication number Publication date
FR2047445A5 (en) 1971-03-12

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years