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WO2018134598A3 - Multi-stage vacuum booster pump coupling - Google Patents

Multi-stage vacuum booster pump coupling Download PDF

Info

Publication number
WO2018134598A3
WO2018134598A3 PCT/GB2018/050145 GB2018050145W WO2018134598A3 WO 2018134598 A3 WO2018134598 A3 WO 2018134598A3 GB 2018050145 W GB2018050145 W GB 2018050145W WO 2018134598 A3 WO2018134598 A3 WO 2018134598A3
Authority
WO
WIPO (PCT)
Prior art keywords
stage
vacuum pump
inter
coupling
stage vacuum
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.)
Ceased
Application number
PCT/GB2018/050145
Other languages
French (fr)
Other versions
WO2018134598A2 (en
Inventor
Michael Henry North
Nigel Paul Schofield
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 Ltd
Original Assignee
Edwards 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 Ltd filed Critical Edwards Ltd
Priority to KR1020197021135A priority Critical patent/KR20190105594A/en
Priority to US16/478,357 priority patent/US20190368354A1/en
Priority to EP18734869.3A priority patent/EP3571407A2/en
Priority to CN201880007724.5A priority patent/CN110177947A/en
Priority to JP2019539190A priority patent/JP2020505550A/en
Publication of WO2018134598A2 publication Critical patent/WO2018134598A2/en
Publication of WO2018134598A3 publication Critical patent/WO2018134598A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/086—Carter
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • 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
    • F04C2210/00—Fluid
    • F04C2210/22—Fluid gaseous, i.e. compressible
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • 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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Abstract

A multi-stage vacuum pump having an interstage coupling unit vacuum pump is disclosed. The inter-stage coupling for a multi-stage vacuum pump comprises: a first inter-stage coupling part defining a first portion of a void for receiving a common rotor shared by adjacent stages of the multi-stage vacuum pump; and a second inter-stage coupling part separable from the first inter-stage coupling part, the second inter-stage coupling part defining a second portion of the void for receiving the common rotor shared by adjacent stages of the multi-stage vacuum pump. In this way, a coupling is provided which enables an assembled rotor and assembled stages of the vacuum pump to be fixed together, since the assembled rotor can be received within the separable parts of the coupling which, in turn, can be fitted to the assembled adjacent stages. This enables the mechanical integrity of the rotor and adjacent stages to be preserved while still facilitating assembly of the multi-stage vacuum pump.
PCT/GB2018/050145 2017-01-20 2018-01-18 Multi-stage vacuum booster pump coupling Ceased WO2018134598A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020197021135A KR20190105594A (en) 2017-01-20 2018-01-18 Multistage vacuum booster pump coupling
US16/478,357 US20190368354A1 (en) 2017-01-20 2018-01-18 Multi-stage vacuum booster pump coupling
EP18734869.3A EP3571407A2 (en) 2017-01-20 2018-01-18 Multi-stage vacuum booster pump coupling
CN201880007724.5A CN110177947A (en) 2017-01-20 2018-01-18 Multi-stage vacuum booster pump connector
JP2019539190A JP2020505550A (en) 2017-01-20 2018-01-18 Multi-stage vacuum booster pump coupling unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1700998.6A GB201700998D0 (en) 2017-01-20 2017-01-20 Multi-stage vacuum booster pump coupling
GB1700998.6 2017-01-20

Publications (2)

Publication Number Publication Date
WO2018134598A2 WO2018134598A2 (en) 2018-07-26
WO2018134598A3 true WO2018134598A3 (en) 2018-10-04

Family

ID=58463139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2018/050145 Ceased WO2018134598A2 (en) 2017-01-20 2018-01-18 Multi-stage vacuum booster pump coupling

Country Status (7)

Country Link
US (1) US20190368354A1 (en)
EP (1) EP3571407A2 (en)
JP (1) JP2020505550A (en)
KR (1) KR20190105594A (en)
CN (1) CN110177947A (en)
GB (1) GB201700998D0 (en)
WO (1) WO2018134598A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2608381A (en) * 2021-06-29 2023-01-04 Edwards Korea Ltd Stator assembly for a roots vacuum pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328824A (en) * 1979-12-10 1982-05-11 General Electric Company Flow divider with plural metering gears, unrestrained spacers there-between and lubricated end roller bearings
EP1020645A1 (en) * 1999-01-11 2000-07-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Multi-stage Roots pump and method of producing the housing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT177505B (en) * 1951-07-09 1954-02-10 Otto Siemen Double stage liquid ring air pump
US3198120A (en) * 1962-10-29 1965-08-03 Waukesha Foundry Co Multiple positive displacement pump
DE3887149D1 (en) * 1988-10-24 1994-02-24 Leybold Ag Twin-shaft vacuum pump and method for its operation.
FR2647853A1 (en) * 1989-06-05 1990-12-07 Cit Alcatel DRY PRIMARY PUMP WITH TWO FLOORS
US6123526A (en) * 1998-09-18 2000-09-26 Industrial Technology Research Institute Multistage pump and method for assembling the pump
CN2660175Y (en) * 2003-11-17 2004-12-01 财团法人工业技术研究院 Multi-stage vacuum pump
JP2005155540A (en) * 2003-11-27 2005-06-16 Aisin Seiki Co Ltd Multistage dry vacuum pump
JP3921551B1 (en) * 2006-02-17 2007-05-30 株式会社四葉機械製作所 Multi-stage roots compressor
JP2010159740A (en) * 2008-12-11 2010-07-22 Toyota Industries Corp Rotating vacuum pump
CN201396281Y (en) * 2009-03-19 2010-02-03 孙成忠 Multistage three-blade Roots vacuum pump
JP2011202603A (en) * 2010-03-26 2011-10-13 Toyota Industries Corp Fluid pump device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328824A (en) * 1979-12-10 1982-05-11 General Electric Company Flow divider with plural metering gears, unrestrained spacers there-between and lubricated end roller bearings
EP1020645A1 (en) * 1999-01-11 2000-07-19 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Multi-stage Roots pump and method of producing the housing

Also Published As

Publication number Publication date
KR20190105594A (en) 2019-09-17
GB201700998D0 (en) 2017-03-08
WO2018134598A2 (en) 2018-07-26
US20190368354A1 (en) 2019-12-05
EP3571407A2 (en) 2019-11-27
JP2020505550A (en) 2020-02-20
CN110177947A (en) 2019-08-27

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