FR2246756A1 - - Google Patents

Info

Publication number
FR2246756A1
FR2246756A1 FR7432761A FR7432761A FR2246756A1 FR 2246756 A1 FR2246756 A1 FR 2246756A1 FR 7432761 A FR7432761 A FR 7432761A FR 7432761 A FR7432761 A FR 7432761A FR 2246756 A1 FR2246756 A1 FR 2246756A1
Authority
FR
France
Prior art keywords
pump rotor
housing
stub shaft
hollow
hollow 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.)
Granted
Application number
FR7432761A
Other languages
English (en)
Other versions
FR2246756B1 (fr
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.)
Balzers und Leybold Deutschland Holding AG
Original Assignee
Leybold Heraeus 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 Heraeus GmbH filed Critical Leybold Heraeus GmbH
Publication of FR2246756A1 publication Critical patent/FR2246756A1/fr
Application granted granted Critical
Publication of FR2246756B1 publication Critical patent/FR2246756B1/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
    • 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
    • F04D19/048—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps comprising magnetic bearings
    • 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/058—Bearings magnetic; electromagnetic
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/047—Details of housings; Mounting of active magnetic bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/02—Relieving load on bearings using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • F05D2240/61—Hollow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/44—Centrifugal pumps
    • F16C2360/45—Turbo-molecular pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C37/00—Cooling of bearings
    • F16C37/005—Cooling of bearings of magnetic bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Non-Positive Displacement Air Blowers (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
FR7432761A 1973-09-29 1974-09-27 Expired FR2246756B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2349033A DE2349033C3 (de) 1973-09-29 1973-09-29 Turbomolekularpumpe

Publications (2)

Publication Number Publication Date
FR2246756A1 true FR2246756A1 (fr) 1975-05-02
FR2246756B1 FR2246756B1 (fr) 1979-02-16

Family

ID=5894086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7432761A Expired FR2246756B1 (fr) 1973-09-29 1974-09-27

Country Status (6)

Country Link
US (1) US4023920A (fr)
JP (1) JPS5730998B2 (fr)
CH (1) CH578125A5 (fr)
DE (1) DE2349033C3 (fr)
FR (1) FR2246756B1 (fr)
GB (1) GB1459884A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333981A1 (fr) * 1975-12-06 1977-07-01 Pfeiffer Vakuumtechnik Pompe turbomoleculaire montee sur des paliers magnetiques
FR2457397A1 (fr) * 1979-05-21 1980-12-19 Cambridge Thermionic Corp Turbopompe a vide moleculaire, a groupe magnetique de support a puissance efficace nulle et a servocommande a axe unique
FR2521650A1 (fr) * 1982-02-16 1983-08-19 Cit Alcatel Pompe rotative a vide eleve
FR2536473A1 (fr) * 1982-11-19 1984-05-25 Seiko Instr & Electronics Pompe turbomoleculaire
FR2550829A1 (fr) * 1983-08-16 1985-02-22 Seiko Seiki Kk Pompe turbo-moleculaire verticale
EP0298437A2 (fr) * 1987-07-10 1989-01-11 Fortuna-Werke Maschinenfabrik GmbH Ventilateur pour la circulation de grandes quantités de gaz pour laser à haute puissance par le principe de l'écoulement de gaz
EP0445690A1 (fr) * 1990-03-07 1991-09-11 Alcatel Cit Pompe à vide pour vide moléculaire propre
WO1993020362A1 (fr) * 1992-03-27 1993-10-14 Forschungszentrum Jülich GmbH Systeme de palier auxiliaire pour un rotor monte flottant sur un stator
WO1999046509A1 (fr) * 1998-03-10 1999-09-16 Varian, Inc. Pompe a vide pourvue d'une ensemble paliers de secours
WO1999046510A1 (fr) * 1998-03-10 1999-09-16 Varian, Inc. Pompe a vide a systeme de palier magnetique et a paliers amortisseurs
WO1999046508A3 (fr) * 1998-03-10 1999-11-11 Varian Inc Pompe a vide comprenant un systeme de paliers magnetiques, des paliers de secours et des capteurs
EP1039138A2 (fr) * 1999-03-24 2000-09-27 Varian, Inc. Pompe à vide avec moteur à rotor extérieur

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116592A (en) * 1976-08-20 1978-09-26 Viktor Yakovlevich Cherny Turbomolecular high-vacuum pulp
FR2377549A1 (fr) * 1977-01-12 1978-08-11 Europ Propulsion Montage de rotor court de grand diametre
DE2837969A1 (de) * 1978-08-31 1980-03-06 Demag Ag Mannesmann Turboverdichter
JPS5841296A (ja) * 1981-09-04 1983-03-10 Seiko Instr & Electronics Ltd 磁気軸受を応用した小型軸流分子ポンプ
DE3204750C2 (de) * 1982-02-11 1984-04-26 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Magnetisch gelagerte Turbomolekularpumpe
US4579508A (en) * 1982-04-21 1986-04-01 Hitachi, Ltd. Turbomolecular pump
DE3302839A1 (de) * 1983-01-28 1984-08-02 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Turbomolekularpumpe mit induktivitaetsarmem gleichstrommotor, bremseinrichtung und verfahren zum betrieb derselben
JPS59168295A (ja) * 1983-03-16 1984-09-21 Hitachi Ltd タ−ボ分子ポンプ
US4732529A (en) * 1984-02-29 1988-03-22 Shimadzu Corporation Turbomolecular pump
DE3508483A1 (de) * 1985-03-09 1986-10-23 Leybold-Heraeus GmbH, 5000 Köln Gehaeuse fuer eine turbomolekularvakuumpumpe
FR2609123A1 (fr) * 1986-12-31 1988-07-01 Mecanique Magnetique Sa Palier fluide hybride a raideur modifiee par effet electromagnetique
JPH0772556B2 (ja) * 1988-03-18 1995-08-02 株式会社荏原製作所 ターボ分子ポンプ
DE3818556A1 (de) * 1988-06-01 1989-12-07 Pfeiffer Vakuumtechnik Magnetlager fuer eine schnell rotierende vakuumpumpe
JPH02102385A (ja) * 1988-10-08 1990-04-13 Toyo Eng Corp 排気装置
DE3931661A1 (de) * 1989-08-25 1991-04-04 Leybold Ag Magnetgelagerte vakuumpumpe
JPH0774639B2 (ja) * 1990-05-31 1995-08-09 株式会社島津製作所 真空ポンプ
FR2712358B1 (fr) * 1993-11-09 1996-02-09 Mecanique Magnetique Sa Dispositif de montage et d'entraînement d'une broche, notamment d'une broche textile.
DE4410656A1 (de) * 1994-03-26 1995-09-28 Balzers Pfeiffer Gmbh Reibungspumpe
DE4427154A1 (de) * 1994-08-01 1996-02-08 Balzers Pfeiffer Gmbh Reibungspumpe mit Magnetlagerung
DE19529038A1 (de) * 1995-08-08 1997-02-13 Pfeiffer Vacuum Gmbh Magnetlager für einen Rotor
GB9525337D0 (en) * 1995-12-12 1996-02-14 Boc Group Plc Improvements in vacuum pumps
IT1285864B1 (it) * 1996-05-09 1998-06-24 Varian Spa Gruppo girevole di supporto per rotatore di pompa da vuoto.
SE508445C2 (sv) * 1997-01-28 1998-10-05 Magnetal Ab Vakuumpump av höghastighetstyp
JP2976203B1 (ja) * 1998-05-27 1999-11-10 セイコー精機株式会社 磁気軸受
JP3000356B1 (ja) * 1998-07-07 2000-01-17 セイコー精機株式会社 真空ポンプ及び真空装置
JP3215842B2 (ja) 1999-03-29 2001-10-09 セイコーインスツルメンツ株式会社 磁気軸受保護装置及びターボ分子ポンプ
JP2002276587A (ja) * 2001-03-19 2002-09-25 Boc Edwards Technologies Ltd ターボ分子ポンプ
JP2002295398A (ja) * 2001-03-28 2002-10-09 Boc Edwards Technologies Ltd ターボ分子ポンプの保護装置、及びターボ分子ポンプの保護方法
GB0229356D0 (en) * 2002-12-17 2003-01-22 Boc Group Plc Vacuum pumping arrangement
FR2861142B1 (fr) * 2003-10-16 2006-02-03 Mecanique Magnetique Sa Pompe a vide turbo moleculaire
KR100610012B1 (ko) * 2004-08-16 2006-08-09 삼성전자주식회사 터보 펌프
GB2420379A (en) * 2004-11-18 2006-05-24 Boc Group Plc Vacuum pump having a motor combined with an impeller
US20060175014A1 (en) * 2005-02-10 2006-08-10 Michael Cox Specimen surface treatment system
US20060175013A1 (en) * 2005-02-10 2006-08-10 Michael Cox Specimen surface treatment system
US20060175291A1 (en) * 2005-02-10 2006-08-10 Hunt John A Control of process gases in specimen surface treatment system
DE102006016405B4 (de) * 2006-04-07 2024-08-01 Pfeiffer Vacuum Gmbh Vakuumpumpe mit Antriebsgerät
DE102008035891A1 (de) * 2008-07-31 2010-02-04 Oerlikon Leybold Vacuum Gmbh Vakuumpumpe
DE102010045716A1 (de) * 2010-09-16 2012-03-22 Pfeiffer Vacuum Gmbh Vakuumpumpe
US9790946B2 (en) * 2010-09-28 2017-10-17 Edwards Japan Limited Exhaust pump
ITCO20100067A1 (it) 2010-12-23 2012-06-24 Nuovo Pignone Spa Connessione elettrica per turbomacchina e metodo
FR2974175B1 (fr) * 2011-04-14 2013-10-11 Mecanique Magnetique Sa Dispositif de detection de la position axiale d'un arbre tournant et application a une pompe turbo-moleculaire
CN102242722B (zh) * 2011-06-21 2013-12-18 北京中科科仪股份有限公司 一种磁悬浮分子泵及其控制方法、制造方法
CN102242721A (zh) * 2011-06-21 2011-11-16 北京中科科仪技术发展有限责任公司 一种磁悬浮分子泵及其制造方法
JP2016178801A (ja) * 2015-03-20 2016-10-06 株式会社Ihi スイッチトリラクタンス回転機、及び回転装置
KR102499085B1 (ko) * 2016-05-04 2023-02-10 삼성전자주식회사 진공 펌프
JP6948147B2 (ja) * 2017-04-18 2021-10-13 エドワーズ株式会社 真空ポンプ、真空ポンプに備わる磁気軸受部およびシャフト
US11536268B2 (en) * 2018-11-09 2022-12-27 Kyb Corporation Electric pump
JP7424007B2 (ja) * 2019-11-26 2024-01-30 株式会社島津製作所 真空ポンプ
CN117189791B (zh) * 2023-11-07 2024-01-23 成都中科翼能科技有限公司 一种带传感器的动力涡轮轴承机匣组件

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442019A (en) * 1943-06-11 1948-05-25 Allis Chalmers Mfg Co Turbine construction
US2436939A (en) * 1943-10-21 1948-03-02 Hoover Co Magnetic coupling and bearing
US2557879A (en) * 1944-07-07 1951-06-19 Lewis Thomas Maldwyn Combined pump and electric motor unit
US2536824A (en) * 1949-11-19 1951-01-02 Gen Electric Laminated magnetic suspension
US2742223A (en) * 1952-12-13 1956-04-17 Font Eduardo Soler Electric propeller fans and the like
US2809526A (en) * 1953-12-23 1957-10-15 Gen Electric Single axis gyroscope
US2772863A (en) * 1954-08-30 1956-12-04 Pacific Pumps Inc Mixing pump
FR81075E (fr) * 1962-01-23 1963-07-26 Snecma Pompe à vide turbomoléculaire perfectionnée
FR1475765A (fr) * 1966-01-31 1967-04-07 Snecma Perfectionnements aux appareils à arbre vertical tournant à grande vitesse
DE1933031C3 (de) * 1969-06-30 1978-10-26 Karl 5170 Juelich Boden Magnetische Lagerung
FR2086525A5 (fr) * 1970-04-01 1971-12-31 Commissariat Energie Atomique
US3698775A (en) * 1970-04-01 1972-10-17 Technical Management Services Magnetic support and motor structure
US3644067A (en) * 1970-05-25 1972-02-22 Sperry Rand Corp Power transmission
US3614181A (en) * 1970-07-02 1971-10-19 Us Air Force Magnetic bearing for combined radial and thrust loads
US3628894A (en) * 1970-09-15 1971-12-21 Bendix Corp High-vacuum mechanical pump
FR2110581A5 (fr) * 1970-10-22 1972-06-02 Habermann Helmut

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333981A1 (fr) * 1975-12-06 1977-07-01 Pfeiffer Vakuumtechnik Pompe turbomoleculaire montee sur des paliers magnetiques
FR2457397A1 (fr) * 1979-05-21 1980-12-19 Cambridge Thermionic Corp Turbopompe a vide moleculaire, a groupe magnetique de support a puissance efficace nulle et a servocommande a axe unique
FR2521650A1 (fr) * 1982-02-16 1983-08-19 Cit Alcatel Pompe rotative a vide eleve
FR2536473A1 (fr) * 1982-11-19 1984-05-25 Seiko Instr & Electronics Pompe turbomoleculaire
FR2550829A1 (fr) * 1983-08-16 1985-02-22 Seiko Seiki Kk Pompe turbo-moleculaire verticale
EP0298437A2 (fr) * 1987-07-10 1989-01-11 Fortuna-Werke Maschinenfabrik GmbH Ventilateur pour la circulation de grandes quantités de gaz pour laser à haute puissance par le principe de l'écoulement de gaz
EP0298437A3 (fr) * 1987-07-10 1989-09-20 Fortuna-Werke Maschinenfabrik GmbH Ventilateur pour la circulation de grandes quantités de gaz pour laser à haute puissance par le principe de l'écoulement de gaz
EP0445690A1 (fr) * 1990-03-07 1991-09-11 Alcatel Cit Pompe à vide pour vide moléculaire propre
FR2659396A1 (fr) * 1990-03-07 1991-09-13 Cit Alcatel Pompe a vide pour vide moleculaire propre.
US5106273A (en) * 1990-03-07 1992-04-21 Alcatel Cit Vacuum pump for producing a clean molecular vacuum
WO1993020362A1 (fr) * 1992-03-27 1993-10-14 Forschungszentrum Jülich GmbH Systeme de palier auxiliaire pour un rotor monte flottant sur un stator
WO1999046509A1 (fr) * 1998-03-10 1999-09-16 Varian, Inc. Pompe a vide pourvue d'une ensemble paliers de secours
WO1999046510A1 (fr) * 1998-03-10 1999-09-16 Varian, Inc. Pompe a vide a systeme de palier magnetique et a paliers amortisseurs
WO1999046508A3 (fr) * 1998-03-10 1999-11-11 Varian Inc Pompe a vide comprenant un systeme de paliers magnetiques, des paliers de secours et des capteurs
US6078120A (en) * 1998-03-10 2000-06-20 Varian, Inc. Vacuum pump with magnetic bearing system, backup bearings and sensors
EP1039138A2 (fr) * 1999-03-24 2000-09-27 Varian, Inc. Pompe à vide avec moteur à rotor extérieur
EP1039138A3 (fr) * 1999-03-24 2001-11-07 Varian, Inc. Pompe à vide avec moteur à rotor extérieur

Also Published As

Publication number Publication date
US4023920A (en) 1977-05-17
DE2349033A1 (de) 1975-04-10
CH578125A5 (fr) 1976-07-30
GB1459884A (en) 1976-12-31
JPS5730998B2 (fr) 1982-07-01
JPS5077913A (fr) 1975-06-25
DE2349033B2 (de) 1981-06-19
DE2349033C3 (de) 1984-08-30
FR2246756B1 (fr) 1979-02-16

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