EP1330606A1 - Mechanische kinetische vakuumpumpe - Google Patents
Mechanische kinetische vakuumpumpeInfo
- Publication number
- EP1330606A1 EP1330606A1 EP01974146A EP01974146A EP1330606A1 EP 1330606 A1 EP1330606 A1 EP 1330606A1 EP 01974146 A EP01974146 A EP 01974146A EP 01974146 A EP01974146 A EP 01974146A EP 1330606 A1 EP1330606 A1 EP 1330606A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- vacuum pump
- mechanical kinetic
- rotor
- 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
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
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid 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
-
- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/12—Light metals
- F05D2300/125—Magnesium
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
-
- 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
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
- F05D2300/173—Aluminium alloys, e.g. AlCuMgPb
Definitions
- the invention relates to a mechanical kinetic vacuum pump with a rotor made of an aluminum alloy.
- Mechanical kinetic vacuum pumps by definition include gas ring pumps, turbo vacuum pumps (axial, radial) and molecular / turbomolecular pumps. They are able to mechanically transport the gas particles to be conveyed in the molecular flow range (pressures below IGT 3 mbar). Molecular pumps are also able to pump gases in the Knudsen flow range (IGT 3 to 1 mbar). Mechanical kinetic vacuum pumps which are preferably used often have a turbomolecular pump stage and an adjoining molecular pump stage (compound or hybrid pump), since such a pump is able to compress gases down to the region of the viscous flow.
- Turbomolecular vacuum pumps and compound pumps are used in manufacturing processes in the semiconductor industry.
- the methods used - etching, coating or the like. - can only be carried out in a vacuum.
- the vacuum pumps mentioned have the task of evacuating the vacuum chambers before starting the processes. and maintain the desired low pressures while the processes are running.
- Turbomolecular vacuum pumps are operated at high speeds (up to 100,000 revolutions / min).
- the rotors are made of a light metal, usually of a melt-metallurgically produced aluminum alloy.
- the alloy is adjusted so that the rotors have the highest possible heat resistance and creep rupture strength.
- the creep rupture strength decreases with increasing rotor temperature.
- the aluminum alloys used up to now have an acceptable creep rupture strength if the rotor temperatures do not exceed 120 ° C.
- the semiconductor components located in the vacuum chamber assume elevated temperatures. This is associated with an increase in the temperature of the gases to be conveyed by the vacuum pumps. These gases in particular cause an increase in the temperature of the rotors of the connected vacuum pumps. This increase in temperature affects the mentioned creep rupture strength.
- Cooling the rotors of a molecular or turbomolecular vacuum pump is difficult.
- the rotors are in a vacuum, so that there is no heat dissipation via the extracted, already hot gases. If the rotors are magnetically supported, their bearing parts do not touch. A heat dissipation via the magnetic bearings is therefore also not possible. If mechanical bearings are provided, rotor heat can be dissipated via the bearings. However, there are strict limits to this way of heat dissipation.
- the surface areas of the rotor and stator touching one another via the rolling elements are limited to the almost point-shaped contact surfaces of the rolling bodies in their bearing rings.
- the bearings must not reach high temperatures due to the presence of a lubricant.
- the operation of mechanical bearings is also associated with heat generation.
- the drive motor of the pump is usually part of the stator and is arranged near the bearings. In the phases in which it is operated under load, it forms a heat source itself. In this case, the heat can be partially transported between the rotor and stator via the gas due to the increased density. The removal of significant amounts of heat via the mechanical bearings would only be possible with intensive cooling of the stator-side bearing parts.
- a mechanical kinetic vacuum pump intended for use in semiconductor processes is known from international patent application WO 99/57441. It is designed as a turbomolecular vacuum pump.
- the pumping speed of the Improve pump In order to achieve the goal of reducing the duration of semiconductor processes, the task is set, the pumping speed of the Improve pump.
- the size of the pump should not change.
- the use of a firmer material suitable for higher temperatures is preferably proposed for the rotor, namely a material consisting of a metal as the base material and non-metallic additives serving to reinforce the base material, such as ceramic. This material should make it possible to increase the speed of the rotors in order to achieve the increase in pumping speed associated with an increase in thermal load without changing the size of the pump.
- machining of the proposed materials is associated with problems due to their increased proportion of hard material particles.
- Rotors for turbomolecular vacuum pumps including the large number of their blades, are usually turned / milled from the full.
- the degree of machining associated with the manufacture of a rotor is up to 80%.
- the manufacture of the rotors from the proposed material is therefore complex and expensive.
- the present invention has for its object to improve the heat and creep rupture strength of a friction vacuum pump of the type mentioned.
- Aluminum alloys produced by powder metallurgy are known per se. They are manufactured in such a way that the melt consisting of the alloy components is sprayed onto a cold surface. Compared to the melting metallurgical production of aluminum materials, the melt solidifies very quickly, which gives the alloy a new structure with changed properties. Aluminum alloys produced by spray compacting, the main alloy component of which is copper, have above all a much higher strength than an aluminum alloy produced by melt metallurgy.
- DISPAL Materials of the type according to the invention are offered on the market under the name DISPAL (eg DISPAL S 690 and S 691). They also contain aluminum
- copper and further alloy components such as magnesium, manganese, zirconium, silver and / or titanium with proportions between 0.1 and 1% by weight.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10053664A DE10053664A1 (de) | 2000-10-28 | 2000-10-28 | Mechanische kinetische Vakuumpumpe |
| DE10053664 | 2000-10-28 | ||
| PCT/EP2001/009193 WO2002035100A1 (de) | 2000-10-28 | 2001-08-09 | Mechanische kinetische vakuumpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1330606A1 true EP1330606A1 (de) | 2003-07-30 |
| EP1330606B1 EP1330606B1 (de) | 2011-07-13 |
Family
ID=7661493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01974146A Expired - Lifetime EP1330606B1 (de) | 2000-10-28 | 2001-08-09 | Mechanische kinetische vakuumpumpe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7097431B2 (de) |
| EP (1) | EP1330606B1 (de) |
| JP (1) | JP2004512463A (de) |
| DE (1) | DE10053664A1 (de) |
| WO (1) | WO2002035100A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254285A (ja) * | 2002-02-28 | 2003-09-10 | Boc Edwards Technologies Ltd | ポンプ装置 |
| DE102004049543A1 (de) * | 2004-10-12 | 2006-04-13 | Man B & W Diesel Ag | Radialverdichterlaufrad und Verfahren zu seiner Herstellung |
| CN101432525A (zh) * | 2006-04-29 | 2009-05-13 | 欧瑞康莱宝真空公司 | 涡轮分子泵的转子或定子 |
| US9127685B2 (en) | 2009-05-20 | 2015-09-08 | Edwards Limited | Regenerative vacuum pump with axial thrust balancing means |
| US9335296B2 (en) | 2012-10-10 | 2016-05-10 | Westinghouse Electric Company Llc | Systems and methods for steam generator tube analysis for detection of tube degradation |
| DE102013219050B3 (de) * | 2013-09-23 | 2015-01-22 | Oerlikon Leybold Vacuum Gmbh | Hochleistungsrotoren einer Turbomolekularpumpe |
| DE102013219043A1 (de) | 2013-09-23 | 2015-03-26 | Oerlikon Leybold Vacuum Gmbh | Legierungen von Rotoren einer Turbomolekularpumpe |
| EP3085964B1 (de) * | 2015-04-21 | 2019-12-11 | Pfeiffer Vacuum Gmbh | Herstellung eines vakuumpumpen-teils mittels eines metallischen, generativen fertigungsverfahrens |
| US11935662B2 (en) | 2019-07-02 | 2024-03-19 | Westinghouse Electric Company Llc | Elongate SiC fuel elements |
| KR102523509B1 (ko) | 2019-09-19 | 2023-04-18 | 웨스팅하우스 일렉트릭 컴퍼니 엘엘씨 | 콜드 스프레이 침착물의 현장 접착 테스트를 수행하기 위한 장치 및 사용 방법 |
| GB2592043A (en) | 2020-02-13 | 2021-08-18 | Edwards Ltd | Axial flow vacuum pump |
| FR3111143B1 (fr) | 2020-06-04 | 2022-11-18 | Constellium Issoire | Produits en alliage aluminium cuivre magnésium performants à haute température |
| EP4390145A3 (de) * | 2022-12-22 | 2024-09-18 | Pfeiffer Vacuum Technology AG | Vakuumpumpe |
Family Cites Families (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2654055B2 (de) | 1976-11-29 | 1979-11-08 | Kernforschungsanlage Juelich Gmbh, 5170 Juelich | Rotor- und Statorscheibe für Turbomolekularpumpe |
| DE2923632A1 (de) * | 1979-06-11 | 1980-12-18 | Leybold Heraeus Gmbh & Co Kg | Verfahren zur herstellung eines schaufelkranzes fuer den rotor einer tubomolekularpumpe und mit schaufelkraenzen dieser art ausgeruesteter rotor |
| DE3530910A1 (de) * | 1984-08-31 | 1986-03-13 | Hitachi, Ltd., Tokio/Tokyo | Verfahren zur herstellung von giessformen |
| US5455003A (en) * | 1988-08-18 | 1995-10-03 | Martin Marietta Corporation | Al-Cu-Li alloys with improved cryogenic fracture toughness |
| US5512241A (en) | 1988-08-18 | 1996-04-30 | Martin Marietta Corporation | Al-Cu-Li weld filler alloy, process for the preparation thereof and process for welding therewith |
| FR2636974B1 (fr) * | 1988-09-26 | 1992-07-24 | Pechiney Rhenalu | Pieces en alliage d'aluminium gardant une bonne resistance a la fatigue apres un maintien prolonge a chaud et procede de fabrication desdites pieces |
| JPH0334699U (de) * | 1989-08-07 | 1991-04-04 | ||
| FR2651244B1 (fr) | 1989-08-24 | 1993-03-26 | Pechiney Recherche | Procede d'obtention d'alliages de magnesium par pulverisation-depot. |
| GB2267912A (en) | 1992-06-15 | 1993-12-22 | Secr Defence | Metal matrix for composite materials |
| DE69307848T2 (de) * | 1992-12-03 | 1997-08-21 | Toyo Aluminium Kk | Hoch warmfeste und verschleissfeste Aluminiumlegierung |
| US5372499A (en) | 1993-08-24 | 1994-12-13 | Daido Tokushuko Kabushiki Kaisha | High-temperature gas blower impeller with vanes made of dispersion-strengthened alloy, gas blower using such impeller, and gas circulating furnace equipped with such gas blower |
| US5524699A (en) * | 1994-02-03 | 1996-06-11 | Pcc Composites, Inc. | Continuous metal matrix composite casting |
| KR100197324B1 (ko) * | 1994-04-14 | 1999-06-15 | 구라우치 노리타카 | 소결 알루미늄 합금제 슬라이드 부재 및 이의 제조방법 |
| JP3331749B2 (ja) | 1994-06-27 | 2002-10-07 | 松下電器産業株式会社 | 真空ポンプ |
| JPH10506150A (ja) * | 1994-08-01 | 1998-06-16 | フランツ ヘーマン、 | 非平衡軽量合金及び製品のために選択される処理 |
| US5925315A (en) * | 1995-02-14 | 1999-07-20 | Caterpillar Inc. | Aluminum alloy with improved tribological characteristics |
| JP3160504B2 (ja) * | 1995-09-05 | 2001-04-25 | 三菱重工業株式会社 | ターボ分子ポンプ |
| US6077363A (en) * | 1996-06-17 | 2000-06-20 | Pechiney Rhenalu | Al-Cu-Mg sheet metals with low levels of residual stress |
| JP3301919B2 (ja) * | 1996-06-26 | 2002-07-15 | 株式会社神戸製鋼所 | 切粉分断性に優れたアルミニウム合金押出材 |
| US5728638A (en) * | 1996-08-21 | 1998-03-17 | Bfd, Inc. | Metal/ceramic composites containing inert metals |
| JPH11117035A (ja) * | 1997-10-09 | 1999-04-27 | Sumitomo Electric Ind Ltd | 摺動部材 |
| US6089843A (en) * | 1997-10-03 | 2000-07-18 | Sumitomo Electric Industries, Ltd. | Sliding member and oil pump |
| US6095754A (en) | 1998-05-06 | 2000-08-01 | Applied Materials, Inc. | Turbo-Molecular pump with metal matrix composite rotor and stator |
| DE19915307A1 (de) * | 1999-04-03 | 2000-10-05 | Leybold Vakuum Gmbh | Reibungsvakuumpumpe mit aus Welle und Rotor bestehender Rotoreinheit |
| DE19918229C2 (de) * | 1999-04-22 | 2002-07-18 | Daimler Chrysler Ag | Verfahren zum Herstellen von Rohlingen für Zylinderlaufbüchsen |
| DE19929952C1 (de) * | 1999-06-29 | 2000-10-26 | Daimler Chrysler Ag | Ölpumpenzahnrad aus Aluminiumpulver |
| US6450772B1 (en) * | 1999-10-18 | 2002-09-17 | Sarcos, Lc | Compact molecular drag vacuum pump |
| DE10210404A1 (de) * | 2002-03-08 | 2003-09-18 | Leybold Vakuum Gmbh | Verfahren zur Herstellung des Rotors einer Reibungsvakuumpumpe sowie nach diesem Verfahren hergestellter Rotor |
-
2000
- 2000-10-28 DE DE10053664A patent/DE10053664A1/de not_active Withdrawn
-
2001
- 2001-08-09 EP EP01974146A patent/EP1330606B1/de not_active Expired - Lifetime
- 2001-08-09 WO PCT/EP2001/009193 patent/WO2002035100A1/de not_active Ceased
- 2001-08-09 US US10/415,029 patent/US7097431B2/en not_active Expired - Fee Related
- 2001-08-09 JP JP2002538053A patent/JP2004512463A/ja active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0235100A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040013529A1 (en) | 2004-01-22 |
| WO2002035100A1 (de) | 2002-05-02 |
| EP1330606B1 (de) | 2011-07-13 |
| US7097431B2 (en) | 2006-08-29 |
| JP2004512463A (ja) | 2004-04-22 |
| DE10053664A1 (de) | 2002-05-08 |
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