EP1200742A1 - Anneau de stator pour pompe a vide turbomoleculaire - Google Patents

Anneau de stator pour pompe a vide turbomoleculaire

Info

Publication number
EP1200742A1
EP1200742A1 EP00951349A EP00951349A EP1200742A1 EP 1200742 A1 EP1200742 A1 EP 1200742A1 EP 00951349 A EP00951349 A EP 00951349A EP 00951349 A EP00951349 A EP 00951349A EP 1200742 A1 EP1200742 A1 EP 1200742A1
Authority
EP
European Patent Office
Prior art keywords
stator
ring
vacuum pump
blades
turbomolecular 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.)
Withdrawn
Application number
EP00951349A
Other languages
German (de)
English (en)
Inventor
Dietmar Bonn
Rainer Hölzer
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.)
Leybold GmbH
Original Assignee
Leybold Vakuum GmbH
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 Leybold Vakuum GmbH filed Critical Leybold Vakuum GmbH
Publication of EP1200742A1 publication Critical patent/EP1200742A1/fr
Withdrawn legal-status Critical Current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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/02—Multi-stage pumps
    • F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/042—Turbomolecular vacuum pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps

Definitions

  • the invention relates to a stator ring for a turbomolecular vacuum pump with an outer spacer ring and with stator blades.
  • turbomolecular vacuum pumps is similar to the construction of turbines. Rotor blade rows and stator blade rows alternate with each other.
  • turbomolecular pump is installed in such a way that a stator blade ring and a rotor blade ring are placed alternately one above the other. Spacer rings between the respective rings ensure that the interlocking blades do not touch each other.
  • stator blade rings must be divided in order to be able to assemble the system consisting of interlocking rows of stator and rotor blades.
  • the stator rings usually consist of two stator half rings which are centered at a distance from one another by the spacer rings.
  • a stator constructed in this way for a turbomolecular vacuum pump is known from EU-A-478882.
  • a disadvantage of the prior art is the relatively high number of components of the stator package, which has an influence on the manufacturing costs and on the assembly costs.
  • the present invention has for its object to reduce the manufacturing and assembly costs for the stator of a turbomolecular vacuum pump.
  • this object is achieved in that the spacer ring and the stator blades of a row of stator blades are formed in one piece.
  • the invention also has another significant advantage which relates to the heat-conducting properties.
  • the number of outer contact surfaces is also reduced compared to the prior art. This significantly improves the dissipation of the heat absorbed by the blades into the stator.
  • the stator ring also expediently has an inner ring integrated with the blades. This results in an extremely stable system that can be manufactured in a simple manner, for example by milling.
  • FIGS. 1 and 2 a stator half ring according to the invention, intended for the suction side of a turbomolecular pump, and
  • FIGS. 3 and 4 a stator half ring according to the invention, intended for the pressure side of a turbomolecular vacuum pump.
  • stator half ring is designated 1, the stator blades 2, an outer half ring 3 and an inner half ring 4. All components are made in one piece.
  • stator half ring 1 shown allows the assembly of a turbomolecular vacuum pump with a one-piece rotor. If the rotor also includes separate rotor blade rings, undivided stator blade rings 1 can be used.
  • half rings are shown as exemplary embodiments. The claims are to be understood so that a stator ring according to the invention can be a divided as well as an undivided stator ring.
  • the outer ring 3 - seen in the axial direction - has a height that also allows it to take over the function of a spacer ring.
  • the inner ring must find space between the rows of rotor blades, not shown. Its axial height is correspondingly smaller.
  • Blade configurations of this type are used in the inlet area of a turbomolecular vacuum pump.
  • the angle of attack and the blade spacing are relatively small.
  • the blades partially overlap each other. Blade configurations of this type are used in the outlet area of a turbomolecular vacuum pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Abstract

L'invention concerne un anneau de stator (1) conçu pour une pompe à vide turbomoléculaire, comportant un anneau d'écartement extérieure (3) et des ailettes de stator (2). Afin de diminuer les coûts de fabrication et de montage, ledit anneau d'écartement (3) et lesdites ailettes de stator (2) sont d'un seul tenant.
EP00951349A 1999-08-07 2000-07-06 Anneau de stator pour pompe a vide turbomoleculaire Withdrawn EP1200742A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999137393 DE19937393A1 (de) 1999-08-07 1999-08-07 Statorring für eine Turbomolekularvakuumpumpe
DE19937393 1999-08-07
PCT/EP2000/006389 WO2001011242A1 (fr) 1999-08-07 2000-07-06 Anneau de stator pour pompe a vide turbomoleculaire

Publications (1)

Publication Number Publication Date
EP1200742A1 true EP1200742A1 (fr) 2002-05-02

Family

ID=7917612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951349A Withdrawn EP1200742A1 (fr) 1999-08-07 2000-07-06 Anneau de stator pour pompe a vide turbomoleculaire

Country Status (5)

Country Link
EP (1) EP1200742A1 (fr)
JP (1) JP2003506631A (fr)
CA (1) CA2379547A1 (fr)
DE (1) DE19937393A1 (fr)
WO (1) WO2001011242A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10046766A1 (de) * 2000-09-21 2002-04-11 Leybold Vakuum Gmbh Compound-Reibungsvakuumpumpe
EP1249613B1 (fr) 2001-03-15 2004-01-28 VARIAN S.p.A. Turbine-pompe avec un étage statorique intégré avec un anneau d'espacement
EP1249612B1 (fr) * 2001-03-15 2004-01-28 VARIAN S.p.A. Procédé de fabrication d'un étage statorique pour une turbine-pompe
DE10357547B4 (de) * 2003-12-10 2020-04-23 Pfeiffer Vacuum Gmbh Turbomolekularpumpe
DE102004023961A1 (de) * 2004-05-14 2005-12-01 Leybold Vacuum Gmbh Verfahren zur Herstellung einer Turbomolekularpumpen-Statorstufe
JP4676731B2 (ja) * 2004-09-10 2011-04-27 エドワーズ株式会社 ターボ分子ポンプ固定翼及び真空ポンプ
DE102006050565A1 (de) * 2006-10-26 2008-04-30 Pfeiffer Vacuum Gmbh Statorscheibe für eine Turbomolekularpumpe
JP5062257B2 (ja) * 2007-08-31 2012-10-31 株式会社島津製作所 ターボ分子ポンプ
JP5397138B2 (ja) * 2009-10-02 2014-01-22 株式会社島津製作所 ターボ分子ポンプ
US8709070B2 (en) 2011-05-10 2014-04-29 Abbott Cardiovascular Systems Inc. Bioabsorbable scaffold with particles providing delayed acceleration of degradation
DE102013213256A1 (de) * 2013-07-05 2015-01-08 Oerlikon Leybold Vacuum Gmbh Statorscheibe
GB2552793A (en) * 2016-08-08 2018-02-14 Edwards Ltd Vacuum pump
GB2557679A (en) * 2016-12-15 2018-06-27 Edwards Ltd Stator blade unit for a turbomolecular pump
FR3135306B1 (fr) * 2022-05-05 2024-05-10 Pfeiffer Vacuum Pompe à vide turbomoléculaire et procédé d’assemblage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013671U1 (de) * 1990-09-29 1992-01-30 Leybold AG, 6450 Hanau Stator für eine Turbomolekularvakuumpumpe
US5358373A (en) * 1992-04-29 1994-10-25 Varian Associates, Inc. High performance turbomolecular vacuum pumps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0111242A1 *

Also Published As

Publication number Publication date
CA2379547A1 (fr) 2001-02-15
JP2003506631A (ja) 2003-02-18
DE19937393A1 (de) 2001-02-08
WO2001011242A1 (fr) 2001-02-15

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