GB1253590A - Improvements in and relating to vacuum pumping arrangements - Google Patents

Improvements in and relating to vacuum pumping arrangements

Info

Publication number
GB1253590A
GB1253590A GB4406769A GB4406769A GB1253590A GB 1253590 A GB1253590 A GB 1253590A GB 4406769 A GB4406769 A GB 4406769A GB 4406769 A GB4406769 A GB 4406769A GB 1253590 A GB1253590 A GB 1253590A
Authority
GB
United Kingdom
Prior art keywords
vacuum
valve
pass
vacuum pumping
relating
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
GB4406769A
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.)
Balzers Patent und Beteiligungs AG
Original Assignee
Balzers Patent und Beteiligungs AG
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 Balzers Patent und Beteiligungs AG filed Critical Balzers Patent und Beteiligungs AG
Publication of GB1253590A publication Critical patent/GB1253590A/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • 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

Landscapes

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

Abstract

1,253,590. Vacuum pumping arrangement. BALZERS PATENT-UND BETEILIGUNGS-A. G. Sept. 5, 1969 [Oct. 11, 1968], No. 44067/69. Heading F1N. A vacuum pumping arrangement comprises a line 3 for connection to a receptacle to be evacuated, first and second series connected vacuum pumps 1, 8 and a valve 12 in a by-pass line 10 bridging the first pump 1, the valve 12 being open at the commencement of pumping and being automatically closed when a predetermined degree of vacuum is produced. Thus, initially, gases are evacuated primarily via the by-pass 10 and the second pump 8. On production of a predetermined vacuum in the by-pass 10, a bellows 15 in communication therewith collapses to close the valve 12. Thereafter evacuation proceeds via both pumps.
GB4406769A 1968-10-11 1969-09-05 Improvements in and relating to vacuum pumping arrangements Expired GB1253590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1549668A CH470589A (en) 1968-10-11 1968-10-11 Arrangement for evacuating recipients

Publications (1)

Publication Number Publication Date
GB1253590A true GB1253590A (en) 1971-11-17

Family

ID=4409559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4406769A Expired GB1253590A (en) 1968-10-11 1969-09-05 Improvements in and relating to vacuum pumping arrangements

Country Status (5)

Country Link
CH (1) CH470589A (en)
DE (1) DE1934936A1 (en)
FR (1) FR2020371A1 (en)
GB (1) GB1253590A (en)
NL (1) NL6817552A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0972938A3 (en) * 1998-07-11 2000-06-28 Pfeiffer Vacuum GmbH Gas ballast device for a multistage positive displacement pump
CN110863971A (en) * 2019-12-17 2020-03-06 东莞市基富真空设备有限公司 Automatic pressure release dual-drive vacuum compression equipment and control method
CN113757119A (en) * 2021-11-09 2021-12-07 杭州智科精密机械有限公司 New energy automobile vacuum pump with detection function

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505647A (en) * 1978-01-26 1985-03-19 Grumman Allied Industries, Inc. Vacuum pumping system
US4850806A (en) * 1988-05-24 1989-07-25 The Boc Group, Inc. Controlled by-pass for a booster pump
US4984412A (en) * 1990-02-26 1991-01-15 Brown & Williamson Tobacco Corporation Hopper apparatus
FR2682164B1 (en) * 1991-10-07 1995-01-20 Cit Alcatel GAS PUMPING INSTALLATION WITH PUMPING SPEED REGULATION.
DE4136950A1 (en) * 1991-11-11 1993-05-13 Pfeiffer Vakuumtechnik MULTI-STAGE VACUUM PUMP SYSTEM
US5733104A (en) * 1992-12-24 1998-03-31 Balzers-Pfeiffer Gmbh Vacuum pump system
NL1028203C2 (en) 2005-02-07 2006-08-08 Faber Group N V Wind and / or awning.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0972938A3 (en) * 1998-07-11 2000-06-28 Pfeiffer Vacuum GmbH Gas ballast device for a multistage positive displacement pump
CN110863971A (en) * 2019-12-17 2020-03-06 东莞市基富真空设备有限公司 Automatic pressure release dual-drive vacuum compression equipment and control method
CN113757119A (en) * 2021-11-09 2021-12-07 杭州智科精密机械有限公司 New energy automobile vacuum pump with detection function

Also Published As

Publication number Publication date
DE1934936A1 (en) 1970-04-16
FR2020371A1 (en) 1970-07-10
NL6817552A (en) 1970-04-14
CH470589A (en) 1969-03-31

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