EP1483507A1 - Procede de realisation du rotor d'une pompe a vide a frottements, et rotor produit grace a ce procede - Google Patents

Procede de realisation du rotor d'une pompe a vide a frottements, et rotor produit grace a ce procede

Info

Publication number
EP1483507A1
EP1483507A1 EP03714745A EP03714745A EP1483507A1 EP 1483507 A1 EP1483507 A1 EP 1483507A1 EP 03714745 A EP03714745 A EP 03714745A EP 03714745 A EP03714745 A EP 03714745A EP 1483507 A1 EP1483507 A1 EP 1483507A1
Authority
EP
European Patent Office
Prior art keywords
rotor
grooves
pump
blades
circumferential grooves
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Withdrawn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
EP03714745A
Other languages
German (de)
English (en)
Inventor
Christian Beyer
Heinz ENGLÄNDER
Peter Klingner
Martin Laerbusch
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 EP1483507A1 publication Critical patent/EP1483507A1/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Withdrawn legal-status Critical Current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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/324—Blades

Definitions

  • the invention relates to a method for producing the rotor of a friction vacuum pump according to the features of the preamble of patent claim 1.
  • the invention also relates to a rotor produced by this method.
  • the present invention is based on the object of reducing the processing times previously required and thus the costs of producing rotors for friction vacuum pumps.
  • the invention allows rows of blades with different angles of attack or wing profiles to be formed in a simple manner by machining operations. This can be achieved by varying the pitch of the thread grooves according to the desired circumstances.
  • the milling times can also be reduced to a minimum or the milling can be completely replaced by turning operations.
  • FIGS. 1 to 4 highly schematic rotors, manufactured according to the invention, the rotors of Figures 1 and 2 in the semi-finished State are shown
  • FIGs 8 and 9 partial sections through friction vacuum pumps with rotors, produced according to the invention.
  • the rotor is labeled 1 and its hub 2.
  • the hub 2 carries blade rows 4 separated by circumferential grooves 3, the individual blades being designated by 5.
  • rows of stator blades 9 engage in the circumferential grooves 3. The rotation of the rotor 1 effects the desired delivery of gases from the suction side 11 to the pressure side 12 of the rotor 1.
  • Figures 1 to 3 show how a rotor 1 can be manufactured according to the invention.
  • a z. B. cylindrical blank either with thread grooves 13 (Figure 1) or with radial circumferential grooves 3 ( Figure 2).
  • the hub 2 of the rotors 1 is formed.
  • the hub 2 according to FIG. 1 carries one or more threaded webs 14, the hub 2 according to FIG. 2 carries radial webs 15 extending over the circumference.
  • Separate rows of blades 4 remain on the hub 2 through the circumferential grooves 3.
  • the profiles (width, length, cross section) and the angle of attack of the blades 5 of a row of blades 4 depend on the width and depth the adjacent grooves 3, 13 and from the slope of the thread grooves 13 at the level of the respective blade row 4.
  • FIG. 4 shows a rotor 1 which has thread grooves / webs 13, 14 over its entire height. Radial circumferential grooves 3 are additionally provided only in its upper region. These measures result in a one-piece rotor 1 for a friction vacuum pump, which is designed in sections (on the suction side) as a turbomolecular pump and (on the pressure side) as a molecular pump (Holweck pump).
  • FIG. 4 shows that the pitch and, above all, changes in pitch of the thread webs 14 can be selected as desired, so that the conveying properties can be adapted exactly to the pressures prevailing at every point of the conveying channel.
  • FIGS. 6 and 7 show a rotor 1, in which the thread webs 14 have a constant pitch over its entire height.
  • Figure 5 shows the rotor 1 in a semi-finished state; it only has the thread webs 14 or thread grooves 13.
  • FIGS. 6 and 7 show different views (FIG. 6 side view, FIG. 7 a view obliquely from below) of the finished rotor 1. After the thread grooves 13 have been produced, the radial circumferential grooves 3 have been produced by turning.
  • FIG. 8 shows a section through the active pumping area of a turbomolecular pump 21. Stator blades 9 engage in the radial circumferential grooves 3 of the rotor 1 produced according to the invention.
  • a stator 22 with stator rings and blade rings serves to hold the stator blades 9 in a known manner.
  • the depth of the circumferential grooves 3 decreases from the suction side 11 to the pressure side 12.
  • the result is a conveying cross section that decreases from the suction side to the pressure side.
  • the method according to the invention allows a rotor 1 to be manufactured in a simple manner with the described or other conveying properties.
  • suction-side section of the pump 21 is designed as a turbomolecular pump.
  • the pressure-side section is formed with, thread grooves / webs 13, 14, the depth / height of which decreases on the pressure side. Together with the inner surface of the stator 22, it forms a Holweck pump.
  • a third pump stage 23 is also indicated, which adjoins the Holweck pump stage of the rotor 1. It comprises a thread 24 embedded in the stator 22, which forms a further fetch pump stage with a cylinder 25 attached to the rotor 1.

Landscapes

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

Abstract

La présente invention concerne un procédé de réalisation d'un rotor monobloc (1) destiné à une pompe à vide à frottements (21) qui se présente au moins par parties sous la forme d'une pompe à vide turbomoléculaire comprenant des ailettes de rotor (5) et des ailettes de stator (9). Selon l'invention: le rotor (1) présente un moyeu (2) qui porte les structures de pompe sur sa surface périphérique; les structures de pompe côté rotor sont formées au moins par parties d'ailettes (5) disposées en rangées (4), qui sont pratiquées par des opérations d'enlèvement de copeaux à la surface d'une ébauche; les opérations d'enlèvement de copeaux conduisent à la formation de gorges périphériques radiales (3) dans lesquelles les rangées d'ailettes de stator (9) viennent en prise lorsque la pompe est à l'état monté; afin de simplifier l'usinage du rotor (1), une autre opération d'enlèvement de copeaux est mise en oeuvre et consiste à pratiquer dans la surface extérieure de l'ébauche une ou plusieurs gorges de filetage (13).
EP03714745A 2002-03-08 2003-02-18 Procede de realisation du rotor d'une pompe a vide a frottements, et rotor produit grace a ce procede Withdrawn EP1483507A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10210404 2002-03-08
DE10210404A DE10210404A1 (de) 2002-03-08 2002-03-08 Verfahren zur Herstellung des Rotors einer Reibungsvakuumpumpe sowie nach diesem Verfahren hergestellter Rotor
PCT/EP2003/001602 WO2003076809A1 (fr) 2002-03-08 2003-02-18 Procede de realisation du rotor d'une pompe a vide a frottements, et rotor produit grace a ce procede

Publications (1)

Publication Number Publication Date
EP1483507A1 true EP1483507A1 (fr) 2004-12-08

Family

ID=27762820

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03714745A Withdrawn EP1483507A1 (fr) 2002-03-08 2003-02-18 Procede de realisation du rotor d'une pompe a vide a frottements, et rotor produit grace a ce procede

Country Status (7)

Country Link
US (1) US20050220606A1 (fr)
EP (1) EP1483507A1 (fr)
JP (1) JP2005519236A (fr)
AU (1) AU2003218990A1 (fr)
DE (1) DE10210404A1 (fr)
TW (1) TW200303803A (fr)
WO (1) WO2003076809A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10053664A1 (de) * 2000-10-28 2002-05-08 Leybold Vakuum Gmbh Mechanische kinetische Vakuumpumpe
DE502007003011D1 (de) * 2006-04-29 2010-04-15 Oerlikon Leybold Vacuum Gmbh Verfahren zur herstellung von rotoren oder statoren einer turbomolekularpumpe
GB2498816A (en) 2012-01-27 2013-07-31 Edwards Ltd Vacuum pump
DE102013207269A1 (de) * 2013-04-22 2014-10-23 Pfeiffer Vacuum Gmbh Statorelement für eine Holweckpumpstufe, Vakuumpumpe mit einer Holweckpumpstufe und Verfahren zur Herstellung eines Statorelements für eine Holweckpumpstufe
DE102013219043A1 (de) 2013-09-23 2015-03-26 Oerlikon Leybold Vacuum Gmbh Legierungen von Rotoren einer Turbomolekularpumpe
DE102013219050B3 (de) * 2013-09-23 2015-01-22 Oerlikon Leybold Vacuum Gmbh Hochleistungsrotoren einer Turbomolekularpumpe
EP3093496B1 (fr) * 2015-05-15 2019-03-06 Pfeiffer Vacuum Gmbh Rotor pour pompe à vide
CN106401991A (zh) * 2016-08-31 2017-02-15 四川九天真空科技股份有限公司 一种分子泵转子及其制造方法
EP3670924B1 (fr) * 2019-11-19 2021-11-17 Pfeiffer Vacuum Gmbh Pompe à vide et procédé de fabrication d'une telle pompe à vide
JP2021173257A (ja) * 2020-04-28 2021-11-01 株式会社島津製作所 ターボ分子ポンプおよびターボ分子ポンプのステータ
JP7396209B2 (ja) * 2020-06-03 2023-12-12 株式会社島津製作所 ターボ分子ポンプ、ターボ分子ポンプのロータおよびステータ
JP7531313B2 (ja) * 2020-06-05 2024-08-09 エドワーズ株式会社 真空ポンプおよび真空ポンプの回転体

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1152308A1 (ru) * 1983-09-23 1990-05-15 A D Anishin Способ изготовления лопаточного диска турбомолекулярного насоса
JPS63173895A (ja) * 1987-01-12 1988-07-18 Mitsubishi Electric Corp タ−ボ分子ポンプのロ−タ製造方法
JPH01195992A (ja) * 1988-01-30 1989-08-07 Naoto Ibarada ターボ分子ポンプの動翼
US5052887A (en) * 1988-02-26 1991-10-01 Novikov Nikolai M Turbomolecular vacuum pump
DE19627921A1 (de) * 1996-07-11 1998-01-15 Leybold Vakuum Gmbh Verfahren zum Wuchten eines Rotors sowie für die Durchführung dieses Verfahrens geeigneter Rotor
IT1293907B1 (it) * 1997-05-28 1999-03-11 Varian Spa Procedimento di fresatura di rotori di pompe turbomolecolari con inglobamento in resina del particolare da fresare.
DE19846188A1 (de) * 1998-10-07 2000-04-13 Leybold Vakuum Gmbh Reibungsvakuumpumpe mit Stator und Rotor
DE19924616C2 (de) * 1999-05-28 2001-04-19 Bornemann J H Gmbh Verfahren zur Herstellung von Rotoren
DE10102341A1 (de) * 2001-01-19 2002-08-08 Ralf Steffens Profilkontur einer Schraubenspindelpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03076809A1 *

Also Published As

Publication number Publication date
WO2003076809A1 (fr) 2003-09-18
TW200303803A (en) 2003-09-16
US20050220606A1 (en) 2005-10-06
JP2005519236A (ja) 2005-06-30
DE10210404A1 (de) 2003-09-18
AU2003218990A1 (en) 2003-09-22

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