DE10320851A1 - turbopump - Google Patents
turbopump Download PDFInfo
- Publication number
- DE10320851A1 DE10320851A1 DE10320851A DE10320851A DE10320851A1 DE 10320851 A1 DE10320851 A1 DE 10320851A1 DE 10320851 A DE10320851 A DE 10320851A DE 10320851 A DE10320851 A DE 10320851A DE 10320851 A1 DE10320851 A1 DE 10320851A1
- Authority
- DE
- Germany
- Prior art keywords
- housing
- ring
- outer ring
- rotor
- magnets
- 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- Withdrawn
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
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/051—Axial thrust balancing
-
- 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
-
- 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
- F04D29/059—Roller 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- 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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/086—Ball or roller bearings self-adjusting with magnetic means to preload the bearing
-
- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/066—Ball or roller 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling 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
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
- F16C2360/45—Turbo-molecular pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Die Turbovakuumpumpe zur Erzeugung eines Hochvakuums weist eine mit hoher Drehzahl rotierende Rotorwelle (15) auf, die in zwei Wälzlagern (21, 21a) gelagert ist. Der Außenring (34) eines Wälzlagers ist in axialer Richtung durch eine Magnetanordnung aus zwei ringförmigen Magneten (35, 36) vorgespannt, zwischen denen ein Luftspalt (37) gebildet ist. Dadurch wird die Übertragung von geräuschbildenden Schwingungen von dem Rotor auf das Gehäuse (12) verhindert.The Turbovacuum pump for generating a high vacuum has one rotor shaft (15) rotating at high speed, which in two roller bearings (21, 21a) is stored. The outer ring (34) of a rolling bearing in the axial direction by a magnet arrangement consisting of two ring-shaped magnets (35, 36) biased, between which an air gap (37) is formed is. This will make the transfer of noise-generating Vibrations from the rotor to the housing (12) prevented.
Description
Die Erfindung betrifft eine Turbomolekularpumpe oder eine Turbovakuumpumpe und insbesondere die Lagerung der Rotorwelle in einer Turbovakuumpumpe.The The invention relates to a turbomolecular pump or a turbovacuum pump and in particular the bearing of the rotor shaft in a turbo vacuum pump.
In
Eine
schnelllaufende Turbopumpe ähnlicher Art
ist in
Der Erfindung liegt die Aufgabe zugrunde, bei einer Turbovakuumpumpe die Lagerung der Rotorwelle im Hinblick auf die auf das Gehäuse übertragenen Rotorschwingungen zu verbessern.The Invention is based on the object in a turbo vacuum pump the bearing of the rotor shaft with regard to those transferred to the housing To improve rotor vibrations.
Die Lösung dieser Aufgabe erfolgt erfindungsgemäß mit den im Patentanspruch 1 angegebenen Merkmalen. Hiernach besteht die Abstützvorrichtung, die den Außenring eines Wälzlagers gehäuseseitig abstützt, bei mindestens einem Wälzlager aus einer Magnetanordnung aus zwei sich abstoßenden, einen axialen Luftspalt bildenden Magneten.The solution this object is achieved according to the invention in the claim 1 specified characteristics. After this there is the support device the the outer ring of a rolling bearing the housing side supported, at least one rolling bearing a magnet arrangement consisting of two repelling, one axial air gap forming magnet.
Die erfindungsgemäße Lageranordnung bewirkt eine berührungslose axiale Abstützung der Lager am Gehäuse, wodurch die Übertragung von Rotorschwingungen auf das Gehäuse verringert wird. An den Lageranlageflächen zum Gehäuse sind je zwei abstoßend wirkende Magnetringpaare installiert, die einen sehr geringen Luftspalt bilden. Der Luftspalt ist nur in der Größenordnung des Wellenspiels. Jeweils ein Ring stützt sich gegen das Gehäuse ab und der andere Ring gegen den Außenring des Wälzlagers. Die negative Steifigkeit der Magnetanordnung sorgt für die erforderliche Vorspannung der Kugellager. Durch die berührungslose axiale Abstützung der Lager wird die zusätzliche Übertragung radialer Schwingbewegungen durch Reibung vermieden. Ebenso werden Fluchtungsfehler der Lageraußenringe zueinander kompensiert.The bearing arrangement according to the invention causes a contactless axial support the bearing on the housing, causing the transmission of rotor vibrations on the housing is reduced. To the Bearing contact surfaces to the housing two are repulsive Acting magnetic ring pairs installed, which have a very small air gap form. The air gap is only in the order of the wave play. One ring supports each against the housing and the other ring against the outer ring of the rolling bearing. The negative rigidity of the magnet arrangement provides the necessary Ball bearing preload. Due to the non-contact axial support of the Camp will the additional transfer radial vibrations caused by friction avoided. Likewise Misalignment of the bearing outer rings compensated for each other.
Die Erfindung ist insbesondere bei schnelllaufenden Turbovakuumpumpen anwendbar, bei denen die Drehzahl über 15.000 U/min liegt. Besonders günstige Auswirkungen hat die Erfindung in einem Drehzahlbereich oberhalb von 27.000 U/min. Die Erfindung ist anwendbar bei Turbomolekularpumpen und anderen Turbovakuumpumpen, wie beispielsweise Turbostream-Pumpen.The Invention is particularly in high-speed turbo vacuum pumps applicable where the speed is above 15,000 rpm. Particularly beneficial effects the invention has a speed range above 27,000 rpm. The invention is applicable to turbomolecular pumps and others Turbovacuum pumps, such as Turbostream pumps.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist der Außenring des Wälzlagers in einer Gleithülse des Gehäuses axial bewegbar geführt. Die Gleithülse kann in einem elastischen O-Ring beweglich gehalten sein.According to one preferred embodiment of the Invention is the outer ring of the rolling bearing in a sliding sleeve of the housing guided axially movable. The sliding sleeve can be in an elastic o-ring be kept mobile.
Im Folgenden werden unter Bezugnahme auf die Zeichnungen Ausführungsbeispiele der Erfindung näher erläutert.in the The following are exemplary embodiments with reference to the drawings the invention closer explained.
Es zeigen:It demonstrate:
Die
dargestellte Turbomolekularpumpe weist einen Stator
Zwischen
die Statorscheiben
Der
Rotor
Die
dem Rotor
Die
Lagervorrichtung
Während des
Betriebes rotiert die Rotorwelle
Unter
Bezugnahme auf
Das
Wälzlager
Auf
den Außenring
Die
Abstützvorrichtung
Der
Außenring
Die
Lagervorrichtung
Claims (4)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10320851A DE10320851A1 (en) | 2003-05-09 | 2003-05-09 | turbopump |
| TW093111332A TW200506222A (en) | 2003-05-09 | 2004-04-23 | Turbo pump |
| PCT/EP2004/004713 WO2004099622A1 (en) | 2003-05-09 | 2004-05-04 | Turbopump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10320851A DE10320851A1 (en) | 2003-05-09 | 2003-05-09 | turbopump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10320851A1 true DE10320851A1 (en) | 2004-11-25 |
Family
ID=33394387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10320851A Withdrawn DE10320851A1 (en) | 2003-05-09 | 2003-05-09 | turbopump |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE10320851A1 (en) |
| TW (1) | TW200506222A (en) |
| WO (1) | WO2004099622A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006117515A1 (en) * | 2005-05-05 | 2006-11-09 | Edwards Limited | Vacuum pump |
| WO2006131694A1 (en) * | 2005-06-10 | 2006-12-14 | Edwards Limited | Vacuum pump |
| WO2013021047A1 (en) * | 2011-08-11 | 2013-02-14 | Aktiebolaget Skf | Axially loadable rolling bearing arrangement with magnetic pre-load device |
| DE102018115160A1 (en) * | 2018-06-25 | 2020-01-02 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Holder for a pivot bearing |
| WO2020165564A1 (en) * | 2019-02-11 | 2020-08-20 | Edwards Limited | Vacuum pump |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0618745D0 (en) * | 2006-09-22 | 2006-11-01 | Boc Group Plc | Molecular drag pumping mechanism |
| WO2008035113A1 (en) | 2006-09-22 | 2008-03-27 | Edwards Limited | Vacuum pump |
| US10590961B2 (en) | 2012-04-04 | 2020-03-17 | Shimadzu Corporation | Vacuum pump |
| CN103644145B (en) * | 2013-12-04 | 2016-01-27 | 江苏大学 | A kind of hot water circulating pump suspension body of coil pipe cooling structure |
| JP6458414B2 (en) * | 2014-09-10 | 2019-01-30 | 株式会社島津製作所 | Vacuum pump |
| CN109026826B (en) * | 2018-09-18 | 2024-03-29 | 台州德基水泵科技有限公司 | A noise-reducing self-priming pump |
| CN212553690U (en) | 2020-06-12 | 2021-02-19 | 米沃奇电动工具公司 | Oscillating Power Tools |
| EP4183031A4 (en) * | 2020-07-20 | 2024-07-31 | Milwaukee Electric Tool Corporation | ELECTRIC MOTOR BEARING SYSTEM AND ASSEMBLY |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2942008A1 (en) * | 1979-10-17 | 1981-04-30 | Leybold Heraeus Gmbh & Co Kg | Shaft bearing for turbo-molecular vacuum pump - has spring rings fitted around double bearings to centralise rotor |
| DE19709205A1 (en) * | 1997-03-06 | 1998-09-10 | Leybold Vakuum Gmbh | Vacuum pump shaft bearing mounting |
| US5895202A (en) * | 1995-06-16 | 1999-04-20 | Alcatel Cit | Molecular drag pump |
| EP0962264A2 (en) * | 1998-05-27 | 1999-12-08 | VARIAN S.p.A. | Compact vacuum pump |
| DE19955517A1 (en) * | 1999-11-18 | 2001-05-23 | Leybold Vakuum Gmbh | High-speed turbopump |
| DE10043235A1 (en) * | 2000-09-02 | 2002-03-14 | Leybold Vakuum Gmbh | vacuum pump |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2452025A1 (en) * | 1979-03-20 | 1980-10-17 | Aerospatiale | PRACTICALLY NULL AXIAL ROLLING BEARING |
| JPS60252194A (en) * | 1984-05-28 | 1985-12-12 | Shimadzu Corp | Turbo molecular pump |
| US4655616A (en) * | 1985-09-25 | 1987-04-07 | Magtrol, Inc. | Computer direct disc drive with magnetically stabilized shaft |
| JP4703845B2 (en) * | 2000-12-26 | 2011-06-15 | 株式会社トプコン | Small rotation motor |
-
2003
- 2003-05-09 DE DE10320851A patent/DE10320851A1/en not_active Withdrawn
-
2004
- 2004-04-23 TW TW093111332A patent/TW200506222A/en unknown
- 2004-05-04 WO PCT/EP2004/004713 patent/WO2004099622A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2942008A1 (en) * | 1979-10-17 | 1981-04-30 | Leybold Heraeus Gmbh & Co Kg | Shaft bearing for turbo-molecular vacuum pump - has spring rings fitted around double bearings to centralise rotor |
| US5895202A (en) * | 1995-06-16 | 1999-04-20 | Alcatel Cit | Molecular drag pump |
| DE19709205A1 (en) * | 1997-03-06 | 1998-09-10 | Leybold Vakuum Gmbh | Vacuum pump shaft bearing mounting |
| EP0962264A2 (en) * | 1998-05-27 | 1999-12-08 | VARIAN S.p.A. | Compact vacuum pump |
| DE19955517A1 (en) * | 1999-11-18 | 2001-05-23 | Leybold Vakuum Gmbh | High-speed turbopump |
| DE10043235A1 (en) * | 2000-09-02 | 2002-03-14 | Leybold Vakuum Gmbh | vacuum pump |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006117515A1 (en) * | 2005-05-05 | 2006-11-09 | Edwards Limited | Vacuum pump |
| WO2006131694A1 (en) * | 2005-06-10 | 2006-12-14 | Edwards Limited | Vacuum pump |
| US8186937B2 (en) | 2005-06-10 | 2012-05-29 | Edwards Limited | Vacuum pump |
| WO2013021047A1 (en) * | 2011-08-11 | 2013-02-14 | Aktiebolaget Skf | Axially loadable rolling bearing arrangement with magnetic pre-load device |
| DE102011080796B4 (en) | 2011-08-11 | 2023-05-25 | Aktiebolaget Skf | Axially load bearing arrangement |
| DE102018115160A1 (en) * | 2018-06-25 | 2020-01-02 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Holder for a pivot bearing |
| WO2020165564A1 (en) * | 2019-02-11 | 2020-08-20 | Edwards Limited | Vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200506222A (en) | 2005-02-16 |
| WO2004099622A1 (en) | 2004-11-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8139 | Disposal/non-payment of the annual fee |