GB1140452A - Improvements relating to liquid sealed mechanical vacuum pumps - Google Patents

Improvements relating to liquid sealed mechanical vacuum pumps

Info

Publication number
GB1140452A
GB1140452A GB11533/66A GB1153366A GB1140452A GB 1140452 A GB1140452 A GB 1140452A GB 11533/66 A GB11533/66 A GB 11533/66A GB 1153366 A GB1153366 A GB 1153366A GB 1140452 A GB1140452 A GB 1140452A
Authority
GB
United Kingdom
Prior art keywords
duct
pump
recess
flap
noise
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
GB11533/66A
Inventor
Eric Spooner
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
Priority to GB11533/66A priority Critical patent/GB1140452A/en
Priority to US622816A priority patent/US3421688A/en
Priority to DE19671628252 priority patent/DE1628252A1/en
Priority to FR99126A priority patent/FR1514763A/en
Publication of GB1140452A publication Critical patent/GB1140452A/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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/02—Liquid sealing for high-vacuum pumps or for compressors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)

Abstract

1,140,452. Rotary vacuum-pumps. EDWARDS HIGH VACUUM INTERNATIONAL Ltd. March 10, 1967 [March 16, 19661, No.11533/66. Heading F1F. In a rotary vacuum-pump of the outwardlysliding radial-vane type, noise generated by compression of sealing liquid e.g. oil, 8, Fig. 1, in and adjacent to an outlet duct 7 is suppressed by a ring 10 that is lodged in the wall of said duct and made of resilient pressure-energy absorbing material, e.g. foamed rubber or synthetic plastics material. The duct 7 is controlled by a valve comprising a flexible flap 5 that is clamped against the body 1 of the pump by a rigid plate 6 and made of either a synthetic plastics material or an elastomeric one; and, alternatively, said noise may be suppressed by air in a closed pocket (11), Fig. 2 (not shown), which is formed within said flap in register with said duct, the ring 10 being dispensed with. In another embodiment, Fig. 3, the noise aforesaid is suppresed by air within a recess 13 that is formed in the plate 6 in alignment with a similar recess within the body of the pump, the latter recess being separated from the former one by the flap 5 and connected to the duct 7 by a passage 14. Atmospheric air enters the recess 13 through a pipe 15. In each embodiment, the pump is sealed by being immersed in oil 2.
GB11533/66A 1966-03-16 1966-03-16 Improvements relating to liquid sealed mechanical vacuum pumps Expired GB1140452A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB11533/66A GB1140452A (en) 1966-03-16 1966-03-16 Improvements relating to liquid sealed mechanical vacuum pumps
US622816A US3421688A (en) 1966-03-16 1967-03-13 Liquid sealed mechanical vacuum pumps
DE19671628252 DE1628252A1 (en) 1966-03-16 1967-03-14 Vacuum pump with liquid seal and device for eliminating noise for such a pump
FR99126A FR1514763A (en) 1966-03-16 1967-03-16 Anti-noise device for vacuum pumps and vacuum pumps fitted with said device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11533/66A GB1140452A (en) 1966-03-16 1966-03-16 Improvements relating to liquid sealed mechanical vacuum pumps

Publications (1)

Publication Number Publication Date
GB1140452A true GB1140452A (en) 1969-01-22

Family

ID=9987989

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11533/66A Expired GB1140452A (en) 1966-03-16 1966-03-16 Improvements relating to liquid sealed mechanical vacuum pumps

Country Status (4)

Country Link
US (1) US3421688A (en)
DE (1) DE1628252A1 (en)
FR (1) FR1514763A (en)
GB (1) GB1140452A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555674A1 (en) * 1983-11-30 1985-05-31 Cit Alcatel PALLET OIL SEAL PUMP
GB2150641A (en) * 1983-12-05 1985-07-03 Walbro Corp Rotary pump
US4714416A (en) * 1984-07-26 1987-12-22 Matsushita Electric Industrial Co., Ltd. Quiet running compressor
EP0921315A3 (en) * 1997-12-08 2000-05-03 Carrier Corporation Compressor discharge port with valve

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497135A (en) * 1968-04-23 1970-02-24 Copeland Refrigeration Corp Noise control for hermetic motor compressors
US4113410A (en) * 1974-08-06 1978-09-12 Otsuka Nutrition Research Institute Inc. Liquid-sealed type vacuum pump
DE2904686A1 (en) * 1979-02-08 1980-08-14 Volkswagenwerk Ag OIL LUBRICATED VACUUM PUMP WITH AN OIL SEPARATOR ARRANGED IN THE AREA OF YOUR SUCTION OPENING
DE102005031718A1 (en) * 2005-07-07 2007-01-18 Leybold Vacuum Gmbh Rotary vacuum pump
WO2010145633A2 (en) * 2009-06-17 2010-12-23 Ixetic Hückeswagen Gmbh Vacuum pump
DE102016007509A1 (en) * 2016-06-20 2017-12-21 Schwäbische Hüttenwerke Automotive GmbH Rotary pump with opening pressure reduction pocket

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2118356A (en) * 1935-03-07 1938-05-24 Crosiey Radio Corp One-way valve
US2929550A (en) * 1955-03-04 1960-03-22 N G N Electrical Ltd Rotary pumps and valves therefor
US2928588A (en) * 1956-10-24 1960-03-15 Gustav H Sudmeier Compressor
US3053439A (en) * 1957-07-24 1962-09-11 Leybolds Nachfolger E Rotary vacuum pump
US3042292A (en) * 1958-05-30 1962-07-03 Heraeus Gmbh W C Vacuum pump with gas ballast device
US3151808A (en) * 1959-06-19 1964-10-06 Leybold Holding A G Pump
US3130902A (en) * 1961-08-28 1964-04-28 Gen Electric Refrigerator compressor
US3360193A (en) * 1965-12-29 1967-12-26 Rotron Mfg Co Regenerative compressors with integral mufflers
US3355095A (en) * 1966-02-01 1967-11-28 Singer Co Combined casing and noise muffler for a vortex fan

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555674A1 (en) * 1983-11-30 1985-05-31 Cit Alcatel PALLET OIL SEAL PUMP
EP0144888A2 (en) * 1983-11-30 1985-06-19 Alcatel Cit Oil-sealed vane pump
EP0144888A3 (en) * 1983-11-30 1985-07-17 Compagnie Industrielle Des Telecommunications Cit-Alcatel S.A. Dite: Oil-sealed vane pump
GB2150641A (en) * 1983-12-05 1985-07-03 Walbro Corp Rotary pump
US4714416A (en) * 1984-07-26 1987-12-22 Matsushita Electric Industrial Co., Ltd. Quiet running compressor
EP0921315A3 (en) * 1997-12-08 2000-05-03 Carrier Corporation Compressor discharge port with valve

Also Published As

Publication number Publication date
US3421688A (en) 1969-01-14
FR1514763A (en) 1968-02-23
DE1628252A1 (en) 1971-01-28

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