GB2625552B - Seal for scroll pump - Google Patents

Seal for scroll pump

Info

Publication number
GB2625552B
GB2625552B GB2219247.0A GB202219247A GB2625552B GB 2625552 B GB2625552 B GB 2625552B GB 202219247 A GB202219247 A GB 202219247A GB 2625552 B GB2625552 B GB 2625552B
Authority
GB
United Kingdom
Prior art keywords
scroll pump
outer portion
inner portion
layer
seal
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.)
Active
Application number
GB2219247.0A
Other versions
GB202219247D0 (en
GB2625552A (en
Inventor
Miles Christopher
James Seeley Andrew
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 GB2219247.0A priority Critical patent/GB2625552B/en
Publication of GB202219247D0 publication Critical patent/GB202219247D0/en
Priority to PCT/GB2023/053236 priority patent/WO2024134146A1/en
Priority to EP23828240.4A priority patent/EP4638966A1/en
Priority to CN202380087082.5A priority patent/CN120435623A/en
Publication of GB2625552A publication Critical patent/GB2625552A/en
Application granted granted Critical
Publication of GB2625552B publication Critical patent/GB2625552B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • 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
    • F04C27/005—Axial sealings for working fluid
    • F04C27/006—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type pumps, e.g. gear pumps
    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F01C1/0207—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F01C1/0215—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F01C1/0223—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving with symmetrical double wraps
    • 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
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/08—Axially-movable sealings for working fluids
    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • F04C18/0223—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving with symmetrical double wraps
    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0253—Details concerning the base
    • 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
    • F04C27/005—Axial sealings for working fluid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

A channel seal 200 for a scroll pump, the channel seal comprises an inner portion 210 and an outer portion 220 around the periphery of the inner portion, where the outer portion is formed from a more wear resistant material than the inner portion and where a surface of the inner portion which is subject to wear during operation of the scroll pump is axially offset from a surface of the outer portion which is subject to wear during operation of the scroll pump. Preferably, the outer portion has a sacrificial bedding-in layer 230, which is integrally formed with the inner portion. The axial offset may be equal to a thickness of the sacrificial layer. The inner portion may be formed from a different material to the outer portion, the outer portion may be formed from a harder material and the sacrificial layer may be formed from the same material as the inner layer. A scroll pump and method of manufacturing is also claimed.
GB2219247.0A 2022-12-20 2022-12-20 Seal for scroll pump Active GB2625552B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2219247.0A GB2625552B (en) 2022-12-20 2022-12-20 Seal for scroll pump
PCT/GB2023/053236 WO2024134146A1 (en) 2022-12-20 2023-12-14 Seal for scroll pump
EP23828240.4A EP4638966A1 (en) 2022-12-20 2023-12-14 Seal for scroll pump
CN202380087082.5A CN120435623A (en) 2022-12-20 2023-12-14 Seals for scroll pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2219247.0A GB2625552B (en) 2022-12-20 2022-12-20 Seal for scroll pump

Publications (3)

Publication Number Publication Date
GB202219247D0 GB202219247D0 (en) 2023-02-01
GB2625552A GB2625552A (en) 2024-06-26
GB2625552B true GB2625552B (en) 2025-10-10

Family

ID=85035697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2219247.0A Active GB2625552B (en) 2022-12-20 2022-12-20 Seal for scroll pump

Country Status (4)

Country Link
EP (1) EP4638966A1 (en)
CN (1) CN120435623A (en)
GB (1) GB2625552B (en)
WO (1) WO2024134146A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2709450B2 (en) * 1995-07-04 1998-02-04 西芝電機株式会社 Scroll compressor
JPH09158860A (en) * 1995-12-13 1997-06-17 Mitsubishi Heavy Ind Ltd Scroll compressor
JP2000009062A (en) * 1998-06-18 2000-01-11 Sanden Corp Scroll type compressor
WO2000006906A1 (en) * 1998-07-30 2000-02-10 Varian, Inc. Scroll-type vacuum pump
GB0912162D0 (en) * 2009-07-14 2009-08-26 Edwards Ltd Scroll compressor
GB2548607B (en) * 2016-03-23 2020-05-06 Edwards Ltd Scroll pump tip sealing
GB2585903B (en) * 2019-07-22 2021-12-08 Edwards Ltd Scroll Pump

Also Published As

Publication number Publication date
WO2024134146A1 (en) 2024-06-27
GB202219247D0 (en) 2023-02-01
GB2625552A (en) 2024-06-26
EP4638966A1 (en) 2025-10-29
CN120435623A (en) 2025-08-05

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