GB1069811A - Improvements in or relating to rotary vacuum pumps - Google Patents

Improvements in or relating to rotary vacuum pumps

Info

Publication number
GB1069811A
GB1069811A GB409364A GB409364A GB1069811A GB 1069811 A GB1069811 A GB 1069811A GB 409364 A GB409364 A GB 409364A GB 409364 A GB409364 A GB 409364A GB 1069811 A GB1069811 A GB 1069811A
Authority
GB
United Kingdom
Prior art keywords
oil
pump
vacuum pump
valve
pumping 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
Application number
GB409364A
Inventor
Peter Sadler
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.)
Genevac Ltd
Original Assignee
Genevac 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 Genevac Ltd filed Critical Genevac Ltd
Priority to GB409364A priority Critical patent/GB1069811A/en
Publication of GB1069811A publication Critical patent/GB1069811A/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
    • 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
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

1,069,811. Rotary vacuum pumps. GENEVAC Ltd. April 26, 1965 [Jan.30, 1964], No. 4093/64. Heading F1F. [Also in Division F2] An oil-sealed rotary vacuum pump 10 mounted in an oil storage reservoir 11 and including an oil pump 15 driven with the vacuum pump which supplies oil to the pumping chamber through an oil feed line 16, includes in the pump inlet line 20 a valve seat 21 co-operable with a resiliently loaded valve member 22 located on the pump side of the seat and held open when the vacuum pump is operating by oil pressure supplied to a bellows 25 (or piston) through a branch line 26. Oil passing through the line 16 passes through a restriction 27, a catch-pot 17 with its rim slightly above the oil level 12 and a needle valve 19. In the event of stoppage of the vacuum pump the oil pump also stops with consequent loss of pressure in the lines 16, 26. The valve 22 then closes to prevent the vacuum system being contaminated with oil and allows only the small amount of oil in the catchpot 17 to reach the pumping chamber. The loading of the spring 23 is such that on re-starting the vacuum pump the valve 22 does not open until the pumping chamber is sufficiently exhausted.
GB409364A 1964-01-30 1964-01-30 Improvements in or relating to rotary vacuum pumps Expired GB1069811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB409364A GB1069811A (en) 1964-01-30 1964-01-30 Improvements in or relating to rotary vacuum pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB409364A GB1069811A (en) 1964-01-30 1964-01-30 Improvements in or relating to rotary vacuum pumps

Publications (1)

Publication Number Publication Date
GB1069811A true GB1069811A (en) 1967-05-24

Family

ID=9770612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB409364A Expired GB1069811A (en) 1964-01-30 1964-01-30 Improvements in or relating to rotary vacuum pumps

Country Status (1)

Country Link
GB (1) GB1069811A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150033A1 (en) * 1981-12-17 1983-07-14 Leybold-Heraeus GmbH, 5000 Köln VACUUM PUMP WITH A SUCTION VALVE AND OPERATING PROCEDURE THEREFOR
EP1010893A2 (en) * 1998-12-15 2000-06-21 Denso Corporation Compressor with lubricating oil control
BE1031172B1 (en) * 2022-12-21 2024-07-22 Atlas Copco Airpower Nv A PRESSURE CONTROLLED MECHANICAL VALVE FOR SELECTIVE DIRECTION OF COLLECTED LUBRICANT IN A VACUUM PUMP DEVICE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150033A1 (en) * 1981-12-17 1983-07-14 Leybold-Heraeus GmbH, 5000 Köln VACUUM PUMP WITH A SUCTION VALVE AND OPERATING PROCEDURE THEREFOR
EP1010893A2 (en) * 1998-12-15 2000-06-21 Denso Corporation Compressor with lubricating oil control
EP1010893A3 (en) * 1998-12-15 2001-08-29 Denso Corporation Compressor with lubricating oil control
BE1031172B1 (en) * 2022-12-21 2024-07-22 Atlas Copco Airpower Nv A PRESSURE CONTROLLED MECHANICAL VALVE FOR SELECTIVE DIRECTION OF COLLECTED LUBRICANT IN A VACUUM PUMP DEVICE

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