EP4219947A3 - Scroll pump with optimized scroll geometry - Google Patents

Scroll pump with optimized scroll geometry Download PDF

Info

Publication number
EP4219947A3
EP4219947A3 EP23179568.3A EP23179568A EP4219947A3 EP 4219947 A3 EP4219947 A3 EP 4219947A3 EP 23179568 A EP23179568 A EP 23179568A EP 4219947 A3 EP4219947 A3 EP 4219947A3
Authority
EP
European Patent Office
Prior art keywords
scroll
wall
optimized
geometry
pump
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.)
Pending
Application number
EP23179568.3A
Other languages
German (de)
French (fr)
Other versions
EP4219947A2 (en
Inventor
Heiko Schäfer
Maik Schäfer
Jonas Becker
Wolfgang Söhngen
Jan Hofmann
Sebastian Latta
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.)
Pfeiffer Vacuum Technology AG
Original Assignee
Pfeiffer Vacuum Technology 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 Pfeiffer Vacuum Technology AG filed Critical Pfeiffer Vacuum Technology AG
Priority to EP23179568.3A priority Critical patent/EP4219947A3/en
Publication of EP4219947A2 publication Critical patent/EP4219947A2/en
Publication of EP4219947A3 publication Critical patent/EP4219947A3/en
Pending 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
    • 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
    • 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
    • F04C18/0269—Details concerning the involute wraps
    • F04C18/0276—Different wall heights
    • 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
    • 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
    • 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
    • F04C29/0021—Systems for the equilibration of forces acting on the pump
    • F04C29/0028—Internal leakage control

Landscapes

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

Abstract

Scrollpumpe mit einem feststehenden Spiralzylinder in Form einer ersten Wand (16) mit einer ersten Wandhöhe (H), wobei sich die erste Wand (16) von einem inneren Ende (58) zu einem äußeren Ende (60) spiralförmig aufweitet, und einem beweglichen Spiralzylinder in Form einer zweiten Wand (18) mit einer zweiten Wandhöhe (H), die sich von einem inneren Ende (58) zu einem äußeren Ende (60) spiralförmig aufweitet und mit der sich spiralförmig aufweitenden ersten Wand (16) verschachtelt ist. Erfindungsgemäß ändert sich die erste Wandhöhe (H) und/oder die zweite Wandhöhe (H) zwischen ihrem inneren Ende (58) und ihrem äußeren Ende (60).Scroll pump with a fixed spiral cylinder in the form of a first wall (16) with a first wall height (H), the first wall (16) expanding spirally from an inner end (58) to an outer end (60), and a movable spiral cylinder in the form of a second wall (18) with a second wall height (H) which expands spirally from an inner end (58) to an outer end (60) and is nested with the spirally expanding first wall (16). According to the invention, the first wall height (H) and/or the second wall height (H) changes between its inner end (58) and its outer end (60).

EP23179568.3A 2023-06-15 2023-06-15 Scroll pump with optimized scroll geometry Pending EP4219947A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23179568.3A EP4219947A3 (en) 2023-06-15 2023-06-15 Scroll pump with optimized scroll geometry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23179568.3A EP4219947A3 (en) 2023-06-15 2023-06-15 Scroll pump with optimized scroll geometry

Publications (2)

Publication Number Publication Date
EP4219947A2 EP4219947A2 (en) 2023-08-02
EP4219947A3 true EP4219947A3 (en) 2024-02-07

Family

ID=86861862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23179568.3A Pending EP4219947A3 (en) 2023-06-15 2023-06-15 Scroll pump with optimized scroll geometry

Country Status (1)

Country Link
EP (1) EP4219947A3 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477238A (en) * 1983-02-23 1984-10-16 Sanden Corporation Scroll type compressor with wrap portions of different axial heights
US5496161A (en) * 1993-12-28 1996-03-05 Tokico Ltd. Scroll fluid apparatus having an inclined wrap surface
JP2002070766A (en) * 2000-08-28 2002-03-08 Mitsubishi Heavy Ind Ltd Scroll compressor
WO2009101894A1 (en) * 2008-02-14 2009-08-20 Sanden Corporation Scroll type fluid machine, and processing method and processing equipment therefor
US20200309131A1 (en) * 2016-08-31 2020-10-01 Mitsubishi Heavy Industries Thermal Systems, Ltd. Scroll fluid machine and tip seal
EP3751143A1 (en) * 2018-02-21 2020-12-16 Mitsubishi Heavy Industries Thermal Systems, Ltd. Scroll fluid machine
US20210071662A1 (en) * 2018-02-21 2021-03-11 Mitsubishi Heavy Industries Thermal Systems, Ltd. Scroll fluid machine and scroll member used therein
US20220178370A1 (en) * 2019-03-20 2022-06-09 Sanden Automotive Components Corporation Scroll compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3153708B1 (en) 2015-10-06 2019-07-17 Pfeiffer Vacuum Gmbh Scroll pump and method for operating a scroll pump
EP3754200B1 (en) 2019-10-07 2021-12-08 Pfeiffer Vacuum Gmbh Scroll vacuum pump and assembly method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4477238A (en) * 1983-02-23 1984-10-16 Sanden Corporation Scroll type compressor with wrap portions of different axial heights
US5496161A (en) * 1993-12-28 1996-03-05 Tokico Ltd. Scroll fluid apparatus having an inclined wrap surface
JP2002070766A (en) * 2000-08-28 2002-03-08 Mitsubishi Heavy Ind Ltd Scroll compressor
WO2009101894A1 (en) * 2008-02-14 2009-08-20 Sanden Corporation Scroll type fluid machine, and processing method and processing equipment therefor
US20200309131A1 (en) * 2016-08-31 2020-10-01 Mitsubishi Heavy Industries Thermal Systems, Ltd. Scroll fluid machine and tip seal
EP3751143A1 (en) * 2018-02-21 2020-12-16 Mitsubishi Heavy Industries Thermal Systems, Ltd. Scroll fluid machine
US20210071662A1 (en) * 2018-02-21 2021-03-11 Mitsubishi Heavy Industries Thermal Systems, Ltd. Scroll fluid machine and scroll member used therein
US20220178370A1 (en) * 2019-03-20 2022-06-09 Sanden Automotive Components Corporation Scroll compressor

Also Published As

Publication number Publication date
EP4219947A2 (en) 2023-08-02

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Inventor name: LATTA, SEBASTIAN

Inventor name: HOFMANN, JAN

Inventor name: SOEHNGEN, WOLFGANG

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Inventor name: SCHAEFER, HEIKO

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