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DE19937393A1 - Stator ring for a turbomolecular vacuum pump - Google Patents

Stator ring for a turbomolecular vacuum pump

Info

Publication number
DE19937393A1
DE19937393A1 DE1999137393 DE19937393A DE19937393A1 DE 19937393 A1 DE19937393 A1 DE 19937393A1 DE 1999137393 DE1999137393 DE 1999137393 DE 19937393 A DE19937393 A DE 19937393A DE 19937393 A1 DE19937393 A1 DE 19937393A1
Authority
DE
Germany
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.)
Ceased
Application number
DE1999137393
Other languages
German (de)
Inventor
Reiner Hoelzer
Dietmar Bonn
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
Priority to DE1999137393 priority Critical patent/DE19937393A1/en
Priority to PCT/EP2000/006389 priority patent/WO2001011242A1/en
Priority to JP2001515465A priority patent/JP2003506631A/en
Priority to EP00951349A priority patent/EP1200742A1/en
Priority to CA002379547A priority patent/CA2379547A1/en
Publication of DE19937393A1 publication Critical patent/DE19937393A1/en
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00Axial-flow pumps
    • F04D19/02Multi-stage pumps
    • F04D19/04Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
    • F04D19/042Turbomolecular vacuum pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/54Fluid-guiding means, e.g. diffusers
    • F04D29/541Specially adapted for elastic fluid pumps
    • F04D29/542Bladed diffusers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/60Mounting; Assembling; Disassembling
    • F04D29/64Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps

Landscapes

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

Abstract

The invention relates to a stator ring (1) for a turbomolecular vacuum pump, comprising an outer spacing ring (3) and stator blades (2). In order to reduce fabrication and mounting costs, said spacing ring (3) and said stator blades (2) are designed as a unitary part.

Description

Die Erfindung bezieht sich auf einen Statorring für ei­ ne Turbomolekularvakuumpumpe mit einem äusseren Dis­ tanzring und mit Statorschaufeln.The invention relates to a stator ring for egg ne turbomolecular vacuum pump with an outer dis dance ring and with stator blades.

Der Aufbau von Turbomolekularvakuumpumpen ähnelt dem Aufbau von Turbinen. Rotorschaufelreihen und Stator­ schaufelreihen wechseln einander ab.The structure of turbomolecular vacuum pumps is similar to that Construction of turbines. Row of rotor blades and stator Row of blades alternate.

Es ist bekannt, den Stator und den Rotor einer Turbomo­ lekularvakuumpumpe mit jeweils separat montierbaren Stator- und Rotorschaufelringen auszurüsten. In diesem Fall erfolgt die Montage der Turbomolekularpumpe in der Weise, dass abwechselnd ein Statorschaufelring und ein Rotorschaufelring übereinander gelegt werden. Distanz­ ringe zwischen den jeweiligen Ringen sorgen dafür, dass die ineinandergreifenden Schaufeln einander nicht be­ rühren.It is known the stator and the rotor of a Turbomo lecular vacuum pump with separately mountable Equip stator and rotor blade rings. In this The turbomolecular pump is installed in the case Way that alternately a stator blade ring and a Rotor blade ring are placed one above the other. Distance rings between the respective rings ensure that the interlocking blades do not adhere to each other stir.

Inzwischen setzt es sich immer mehr durch, dass der Ro­ tor mit seinen Schaufeln einstückig ausgebildet ist. In diesem Fall müssen die Statorschaufelringe geteilt sein, um das aus ineinander greifenden Stator- und Ro­ torschaufelreihen bestehende System montieren zu kön­ nen. Üblicherweise bestehen die Statorringe aus zwei Statorhalbringen, die von den Distanzringen auf Abstand gehalten zentriert werden. Aus der EU-A-478882 ist ein in dieser Weise aufgebauter Stator für eine Turbomole­ kularvakuumpumpe bekannt.In the meantime it is becoming increasingly common that the Ro gate is integrally formed with its blades. In  In this case, the stator blade rings must be divided be the interlocking stator and ro to be able to install existing system nen. The stator rings usually consist of two Stator half rings spaced from the spacer rings kept centered. From EU-A-478882 is a stator constructed in this way for a turbomole Kularvakumpumpe known.

Nachteilig am Stand der Technik ist die relativ hohe Zahl der Bauteile des Statorpaketes, welche Einfluss auf die Herstellkosten und auf die Montagekosten hat.The disadvantage of the prior art is the relatively high level Number of components of the stator package, which influence on manufacturing costs and on assembly costs.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den Herstell- und Montageaufwand für den Stator einer Turbomolekularvakuumpumpe zu reduzieren.The present invention is based on the object the manufacturing and assembly costs for the stator one Reduce turbomolecular vacuum pump.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass der Distanzring und die Statorschaufeln einer Stator­ schaufelreihe einstückig ausgebildet sind.According to the invention, this object is achieved in that the spacer ring and the stator blades of a stator blade row are integrally formed.

Neben der Reduzierung der herzustellenden und zu mon­ tierenden Teile ist mit der Erfindung ein weiterer, we­ sentlicher Vorteil verbunden, der die Wärmeleiteigen­ schaften betrifft. Bei einem Statorschaufelring mit in­ tegriertem äusseren Distanzring ist im Verbleib zum Stand der Technik auch die Anzahl der äusseren Kontakt­ flächen reduziert. Dadurch wird die Ableitung der von den Schaufeln aufgenommenen Wärme in den Stator erheb­ lich verbessert. In addition to the reduction of the to be manufactured and mon parts with the invention is another, we substantial advantage associated with the heat-conducting concerns. With a stator blade ring with in integrated outer spacer ring remains in the State of the art also the number of external contacts space reduced. This will derive the from the heat absorbed by the blades into the stator Lich improved.  

Zweckmässig weist der Statorring ausser dem äusseren, integrierten Distanzring auch einen inneren mit den Schaufeln integrierten Ring auf. Dadurch ergibt sich ein äussert stabiles System, das z. B. durch Fräsen in einfacher Weise hergestellt werden kann.The stator ring expediently has, in addition to the outer, integrated spacer ring also an inner with the Scoop up integrated ring. This results in an extremely stable system that e.g. B. by milling in can be manufactured in a simple manner.

Weitere Vorteile und Einzelheiten der Erfindung sollen anhand von in den Fig. 1 bis 4 dargestellten Ausfüh­ rungsbeispielen erläutert werden. Es zeigenFurther advantages and details of the invention will be explained with reference to exemplary embodiments shown in FIGS . 1 to 4. Show it

Fig. 1 und 2 einen Statorhalbring nach der Er­ findung, bestimmt für die Saugseite einer Turbomo­ lekularpumpe, sowie Fig. 1 and 2, a Statorhalbring after he invention, intended for the suction side of a Turbomo lekularpumpe and

Fig. 3 und 4 einen Statorhalbring nach der Er­ findung, bestimmt für die Druckseite einer Turbo­ molekularvakuumpumpe. FIGS. 3 and 4 a Statorhalbring according to the invention He determines molecular vacuum pump for the pressure side of a turbo.

In allen Figuren sind der Statorhalbring mit 1, die Statorschaufeln mit 2, ein äusserer Halbring mit 3 und ein innerer Halbring mit 4 bezeichnet. Sämtliche Be­ standteile sind einstückig ausgebildet.In all of the figures, the stator half ring is denoted by 1 , the stator blades by 2 , an outer half ring by 3 and an inner half ring by 4 . All components are made in one piece.

Die dargestellten Statorhalbring 1 erlauben die Montage einer Turbomolekularvakuumpumpe mit einem einstückigen Rotor. Umfasst auch der Rotor separate Rotorschaufel­ ringe, können ungeteilte Statorschaufelringe 1 einge­ setzt werden. In den Zeichnungen sind als Ausführungs­ beispiele Halbringe dargestellt. Die Patentansprüche sollen so verstanden werden, dass es sich bei einem Statorring nach der Erfindung sowohl um einen geteilten als auch um einen ungeteilten Statorring handeln kann. The 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 inserted. In the drawings, half rings are shown as execution examples. 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.

Der äussere Ring 3 hat - in axialer Richtung gesehen - eine Höhe, die es erlaubt, auch die Funktion eines Dis­ tanzringes zu übernehmen. Der Innenring muss zwischen den nicht dargestellten Rotorschaufelreihen Platz fin­ den. Seine axiale Höhe ist entsprechend kleiner.The outer ring 3 has - seen in the axial direction - a height that allows it to take over the function of a dance ring. The inner ring must find space between the rows of rotor blades, not shown. Its axial height is correspondingly smaller.

Abstand und Anstellwinkel der Schaufeln 2 des Stator­ halbringes 1 nach den Fig. 1 und 2 sind relativ gross. Schaufelkonfigurationen dieser Art werden im Eintrittsbereich einer Turbomolekularvakuumpumpe einge­ setzt.Distance and angle of attack of the blades 2 of the stator half ring 1 according to FIGS. 1 and 2 are relatively large. Blade configurations of this type are used in the inlet area of a turbomolecular vacuum pump.

Beim Ausführungsbeispiel nach den Fig. 3 und 4 sind der Anstellwinkel und der Schaufelabstand relativ klein. Die Schaufeln überlappen einander zum Teil. Schaufelkonfigurationen dieser Art werden im Austritts­ bereich einer Turbomolekularvakuumpumpe eingesetzt.In the embodiment according to FIGS. 3 and 4, the angle of attack and blade pitch 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.

Claims (3)

1. Statorring (1) für eine Turbomolekularvakuumpumpe mit einem äusseren Distanzring (3) und mit Stator­ schaufeln (2), dadurch gekennzeichnet, dass der Distanzring (3) und die Statorschaufeln (2) ein­ stückig ausgebildet sind.1. stator ring ( 1 ) for a turbomolecular vacuum pump with an outer spacer ring ( 3 ) and with stator blades ( 2 ), characterized in that the spacer ring ( 3 ) and the stator blades ( 2 ) are integrally formed. 2. Statorring nach Anspruch 1, dadurch gekennzeich­ net, dass sich die Schaufeln (2) zwischen dem äus­ seren Ring (3) und einem inneren Ring (4) erstrec­ ken, welcher ebenfalls integrierter Bestandteil des Statorringes (1) ist.2. Stator ring according to claim 1, characterized in that the blades ( 2 ) between the outer ring ( 3 ) and an inner ring ( 4 ) erstrec ken, which is also an integral part of the stator ring ( 1 ). 3. Statorring nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, dass er durch Fräsen hergestellt ist.3. stator ring according to claim 1 or 2, characterized records that it is made by milling.
DE1999137393 1999-08-07 1999-08-07 Stator ring for a turbomolecular vacuum pump Ceased DE19937393A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE1999137393 DE19937393A1 (en) 1999-08-07 1999-08-07 Stator ring for a turbomolecular vacuum pump
PCT/EP2000/006389 WO2001011242A1 (en) 1999-08-07 2000-07-06 Stator ring for a turbomolecular vacuum pump
JP2001515465A JP2003506631A (en) 1999-08-07 2000-07-06 Stator ring for turbo molecular vacuum pump
EP00951349A EP1200742A1 (en) 1999-08-07 2000-07-06 Stator ring for a turbomolecular vacuum pump
CA002379547A CA2379547A1 (en) 1999-08-07 2000-07-06 Stator ring for a turbomolecular vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999137393 DE19937393A1 (en) 1999-08-07 1999-08-07 Stator ring for a turbomolecular vacuum pump

Publications (1)

Publication Number Publication Date
DE19937393A1 true DE19937393A1 (en) 2001-02-08

Family

ID=7917612

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999137393 Ceased DE19937393A1 (en) 1999-08-07 1999-08-07 Stator ring for a turbomolecular vacuum pump

Country Status (5)

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

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10046766A1 (en) * 2000-09-21 2002-04-11 Leybold Vakuum Gmbh Compound-friction vacuum pump
EP1249612A1 (en) * 2001-03-15 2002-10-16 VARIAN S.p.A. Method of manufacturing a stator stage for a turbine pump
EP1249613A1 (en) * 2001-03-15 2002-10-16 VARIAN S.p.A. Turbine pump with a stator stage integrated with a spacer ring
DE10357547A1 (en) * 2003-12-10 2005-07-07 Pfeiffer Vacuum Gmbh Turbomolecular pump has stator discs configured at outer edge to form greatest possible contact surface with distance rings which space out discs
EP1600639A2 (en) * 2004-05-14 2005-11-30 LEYBOLD VACUUM GmbH Process for manufacturing a stator stage of a turbomolecular pump
EP1795756A1 (en) * 2004-09-10 2007-06-13 BOC Edwards Japan Limited Fixed vane of turbo molecular pump
DE102013213256A1 (en) * 2013-07-05 2015-01-08 Oerlikon Leybold Vacuum Gmbh stator
EP1918588A3 (en) * 2006-10-26 2015-05-20 Pfeiffer Vacuum Gmbh Stator disc for a turbo molecular pump
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
WO2023213458A1 (en) * 2022-05-05 2023-11-09 Pfeiffer Vacuum Turbomolecular vacuum pump and assembly method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009028099A1 (en) * 2007-08-31 2009-03-05 Shimadzu Corporation Turbo molecular drag pump
JP5397138B2 (en) * 2009-10-02 2014-01-22 株式会社島津製作所 Turbo molecular pump
US8709070B2 (en) 2011-05-10 2014-04-29 Abbott Cardiovascular Systems Inc. Bioabsorbable scaffold with particles providing delayed acceleration of degradation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5358373A (en) * 1992-04-29 1994-10-25 Varian Associates, Inc. High performance turbomolecular vacuum pumps

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9013671U1 (en) * 1990-09-29 1992-01-30 Leybold AG, 6450 Hanau Stator for a turbomolecular vacuum pump

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5358373A (en) * 1992-04-29 1994-10-25 Varian Associates, Inc. High performance turbomolecular vacuum pumps

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10046766A1 (en) * 2000-09-21 2002-04-11 Leybold Vakuum Gmbh Compound-friction vacuum pump
EP1249612A1 (en) * 2001-03-15 2002-10-16 VARIAN S.p.A. Method of manufacturing a stator stage for a turbine pump
EP1249613A1 (en) * 2001-03-15 2002-10-16 VARIAN S.p.A. Turbine pump with a stator stage integrated with a spacer ring
US6627837B1 (en) 2001-03-15 2003-09-30 Varian S.P.A. Method of manufacturing a stator stage for a turbine pump
US6676368B2 (en) 2001-03-15 2004-01-13 Varian S.P.A. Turbine pump with a stator stage integrated with a spacer ring
DE10357547A1 (en) * 2003-12-10 2005-07-07 Pfeiffer Vacuum Gmbh Turbomolecular pump has stator discs configured at outer edge to form greatest possible contact surface with distance rings which space out discs
DE10357547B4 (en) 2003-12-10 2020-04-23 Pfeiffer Vacuum Gmbh Turbomolecular pump
EP1600639A3 (en) * 2004-05-14 2009-12-30 LEYBOLD VACUUM GmbH Process for manufacturing a stator stage of a turbomolecular pump
EP1600639A2 (en) * 2004-05-14 2005-11-30 LEYBOLD VACUUM GmbH Process for manufacturing a stator stage of a turbomolecular pump
DE102004023961A1 (en) * 2004-05-14 2005-12-01 Leybold Vacuum Gmbh Process for the preparation of a turbomolecular pump stator stage
EP1795756A1 (en) * 2004-09-10 2007-06-13 BOC Edwards Japan Limited Fixed vane of turbo molecular pump
US7824153B2 (en) 2004-09-10 2010-11-02 Boc Edwards Japan Limited Stator vane of turbo molecular pump
EP1795756A4 (en) * 2004-09-10 2009-04-15 Edwards Japan Ltd Fixed vane of turbo molecular pump
EP1918588A3 (en) * 2006-10-26 2015-05-20 Pfeiffer Vacuum Gmbh Stator disc for a turbo molecular pump
DE102013213256A1 (en) * 2013-07-05 2015-01-08 Oerlikon Leybold Vacuum Gmbh stator
GB2552793A (en) * 2016-08-08 2018-02-14 Edwards Ltd Vacuum pump
US10844864B2 (en) 2016-08-08 2020-11-24 Edwards Limited Vacuum pump
GB2557679A (en) * 2016-12-15 2018-06-27 Edwards Ltd Stator blade unit for a turbomolecular pump
WO2023213458A1 (en) * 2022-05-05 2023-11-09 Pfeiffer Vacuum Turbomolecular vacuum pump and assembly method thereof

Also Published As

Publication number Publication date
CA2379547A1 (en) 2001-02-15
EP1200742A1 (en) 2002-05-02
JP2003506631A (en) 2003-02-18
WO2001011242A1 (en) 2001-02-15

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Legal Events

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OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
R016 Response to examination communication
R002 Refusal decision in examination/registration proceedings
R003 Refusal decision now final

Effective date: 20130516