EP1067290B1 - Pompe à vide - Google Patents
Pompe à vide Download PDFInfo
- Publication number
- EP1067290B1 EP1067290B1 EP00112483A EP00112483A EP1067290B1 EP 1067290 B1 EP1067290 B1 EP 1067290B1 EP 00112483 A EP00112483 A EP 00112483A EP 00112483 A EP00112483 A EP 00112483A EP 1067290 B1 EP1067290 B1 EP 1067290B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- gas
- vacuum pump
- stage
- gas friction
- 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.)
- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- 238000005086 pumping Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Images
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
- F04D19/046—Combinations of two or more different types of 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/168—Pumps specially adapted to produce a vacuum
-
- 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
- F04D19/044—Holweck-type 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
- F04D23/00—Other rotary non-positive-displacement pumps
- F04D23/008—Regenerative pumps
Definitions
- the invention relates to a vacuum pump for conveying gases and for generating of high vacuum according to the preamble of the first claim.
- a similar vacuum pump is known from e.g. US-A-4 919 599.
- Pumping stations consisting of a turbomolecular pump have proven themselves, for example as a high vacuum pump and a rotary vane pump, which works against atmospheric pressure ejects.
- Pumping stations consisting of at least two vacuum pumps, which are used to achieve the required vacuum parameters, such as Pressure ratio and pumping speed, are necessary, have the disadvantage that they are complex and take up a lot of space. Every pump requires one own drive system with power supply, monitoring and control as well its own storage system. Connection lines between the pumps with valves and control devices increase the effort.
- the invention has for its object to develop a vacuum pump which covers the entire pressure range from atmospheric pressure to high vacuum pressure of approximately 10 -4 mbar and less.
- the pump should consist of one piece and have a compact structure, so that the disadvantages described above, which adhere to pumping stations which consist of several pumps, are avoided. Furthermore, it should have a sufficiently high pressure ratio and pumping speed to meet the requirements in practical use.
- a reliable and safe mode of operation is one of the basic requirements.
- Another goal is lubricant-free operation on the high vacuum side.
- a vacuum pump is presented, which in compact design the entire pressure range from atmospheric pressure to High vacuum area covers. Due to the parallel arrangement of the gas friction pumps on the high vacuum side, a double-flow suction area is formed, the one enables high pumping speed. This is sucked in within the gas friction pump Gas compresses sufficiently so that the subsequent pump only has one flow needs to be.
- This combination along with the feature that the two Gas flows of the gas friction pump merged within this and the intake space the subsequent stage, enables the compact Construction and significantly reduces the size and design effort.
- the present arrangement enables the shaft bearings at both ends attaching the rotor results in a stable bearing, with the bearing with little Diameter can be used, which ensures problem-free operation allow at high speeds.
- the bearings are powered by the gas friction pump separated from the high vacuum side, which has the advantage that the High vacuum side can be regarded as lubricant-free.
- the structural arrangement and the mode of operation offer the gas friction pump as Train Holweck pump. This is particularly suitable in a confined space to develop a maximum pressure ratio. Due to the double flow arrangement reaches the required pumping speed.
- a side channel pump is advantageously used for the subsequent pump. This is particularly suitable for that of the parallel gas friction pumps to compress expelled gas to atmospheric pressure.
- a great advantage for the side channel pump is that its stator elements are made of undivided washers, as mentioned in claim 5.
- This crucial one A disadvantage of side channel pumps is the one-piece pump according to the invention Stator disks avoided.
- the use of undivided stator elements is however only possible if the rotor elements, as described in claim 6, with Clamping rings are attached to the rotor, because only in this way can rotor and stator elements assembled one after the other and optimal axial clearances are observed.
- the pump housing 1 with intake flange 2 and gas discharge flange 3 are the two parallel stages of the gas friction pump according to the design of Holweck 6 and 7 and the side channel pump 8 housed.
- the rotor elements 10, 11a, 11b and 13 of the two pumps are located on the common shaft 4. This is in the centered two bearings 9a and 9b.
- the bearing 9a is in the area of Atmospheric pressure and the bearing 9b in the area of the fore-vacuum pressure.
- the drive arrangement 5 is also located in the area.
- the rotor elements of the double-flow Holweck pump consist of a support ring 10, on which cylindrical Components 11a and 11b for the two parallel pump stages are housed. Together with the stator elements 12a and 12b, which are designed as spiral grooves Surround the cylindrical rotor elements 11a and 11b, they each form two two-stage Holweckpumpen.
- the side channel pump consists of the one-piece rotor disks 13, which with Clamping rings 14 are attached to the rotor 4.
- the stator components are located in between 15 with the delivery channels 16.
- Gas is pumped according to the arrows in the illustration.
- the gas is pumped from the suction area 22 via the parallel Holweck stages 6 and 7, each consisting of two pump stages connected in series 11a / 12a and 11b / 12b exist in the discharge areas 23 and 24.
- Gas flows brought together in the discharge space 25 of the gas friction pump.
- Connecting elements 28 the gas flow passes from the discharge space 25 into the suction space 27 of the side channel pump.
- the gas is pumped in several stages, which are connected to one another via channels 20, compressed to atmospheric pressure and supplied to the gas discharge flange 3 via the discharge chamber 29.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Electrophonic Musical Instruments (AREA)
Claims (6)
- Pompe à vide constituée de pompes à gaz à friction (6) et (7) comportant deux ou plusieurs étages et d'une pompe à plusieurs étages (8) qui est disposée en aval, caractérisée en ce que les deux pompes à gaz à friction sont agencées en parallèle dans la direction du flux, en ce que le flux de gaz aspiré est divisé en deux flux partiels dans la zone d'aspiration (22) et que chacun de ces flux partiels est entraíné, par la pompe à gaz à friction respective, à partir de la zone d'aspiration (22) vers la zone de rejet (23), respectivement (24), en ce que, à la suite, les deux flux de gaz sont réunis au moyen d'éléments de liaison (26) dans une chambre de rejet (25) et en ce que la chambre de rejet (25) est reliée, par l'intermédiaire de conduites (28) avec la chambre d'aspiration (27) de l'étage de pompe (8) disposé en aval de telle manière que l'étage de pompe (8) disposé en aval continue à comprimer le gaz et l'envoie dans une autre chambre de rejet (29).
- Pompe à vide selon la revendication 1, caractérisée en ce que les deux pompes à gaz à friction (6) et (7) sont réalisées selon la structure de Holweck.
- Pompe à vide selon la revendication 1 ou 2, caractérisée en ce que les éléments de liaison (26) sont constitués par des perçages axiaux qui sont ménagés à l'intérieur des pompes à gaz à friction(6) et (7).
- Pompe à vide selon l'une quelconque des revendications précédentes, caractérisée en ce que la pompe disposée en aval (8) est une pompe à canal de dérivation.
- Pompe à vide selon la revendication 4, caractérisée en ce que les éléments (15) du stator de la pompe à canal de dérivation sont constitués par des disques non séparés.
- Pompe à vide selon la revendication 4 ou 5, caractérisée en ce que les éléments (13) du rotor de la pompe à canal de dérivation sont fixés au moyen d'anneaux de serrage (14) sur l'arbre (4) du rotor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19930952A DE19930952A1 (de) | 1999-07-05 | 1999-07-05 | Vakuumpumpe |
DE19930952 | 1999-07-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1067290A2 EP1067290A2 (fr) | 2001-01-10 |
EP1067290A3 EP1067290A3 (fr) | 2001-04-11 |
EP1067290B1 true EP1067290B1 (fr) | 2003-07-30 |
Family
ID=7913691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00112483A Expired - Lifetime EP1067290B1 (fr) | 1999-07-05 | 2000-06-13 | Pompe à vide |
Country Status (5)
Country | Link |
---|---|
US (1) | US6409477B1 (fr) |
EP (1) | EP1067290B1 (fr) |
JP (1) | JP4584420B2 (fr) |
AT (1) | ATE246315T1 (fr) |
DE (2) | DE19930952A1 (fr) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6419461B2 (en) * | 1997-08-13 | 2002-07-16 | Seiko Instruments Inc. | Turbo molecular pump |
DE10114585A1 (de) * | 2001-03-24 | 2002-09-26 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
DE10130426B4 (de) * | 2001-06-23 | 2021-03-18 | Pfeiffer Vacuum Gmbh | Vakuumpumpsystem |
KR20030000735A (ko) * | 2001-06-26 | 2003-01-06 | 김덕겸 | 개선된 시일구조를 가지는 진공펌프 장치 |
JP2005042709A (ja) | 2003-07-10 | 2005-02-17 | Ebara Corp | 真空ポンプ |
GB0409139D0 (en) * | 2003-09-30 | 2004-05-26 | Boc Group Plc | Vacuum pump |
US7021888B2 (en) * | 2003-12-16 | 2006-04-04 | Universities Research Association, Inc. | Ultra-high speed vacuum pump system with first stage turbofan and second stage turbomolecular pump |
DE102008034948A1 (de) * | 2008-07-26 | 2010-01-28 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
US8152442B2 (en) * | 2008-12-24 | 2012-04-10 | Agilent Technologies, Inc. | Centripetal pumping stage and vacuum pump incorporating such pumping stage |
DE102009021642B4 (de) | 2009-05-16 | 2021-07-22 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
DE102009021620B4 (de) | 2009-05-16 | 2021-07-29 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
DE102010019940B4 (de) | 2010-05-08 | 2021-09-23 | Pfeiffer Vacuum Gmbh | Vakuumpumpstufe |
EP2589814B3 (fr) * | 2010-07-02 | 2024-01-24 | Edwards Japan Limited | Pompe à vide |
DE102011112689B4 (de) | 2011-09-05 | 2024-03-21 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
DE102013114290A1 (de) * | 2013-12-18 | 2015-06-18 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
MX2017001909A (es) * | 2015-06-12 | 2017-08-08 | Tti (Macao Commercial Offshore) Ltd | Ventilador axial. |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3536418A (en) * | 1969-02-13 | 1970-10-27 | Onezime P Breaux | Cryogenic turbo-molecular vacuum pump |
NL7010108A (fr) * | 1969-09-30 | 1971-04-01 | ||
BE757354A (fr) * | 1969-10-27 | 1971-03-16 | Sargent Welch Scientific Co | Pompe turbomoleculaire a stators et rotors perfectionnes |
US3969039A (en) * | 1974-08-01 | 1976-07-13 | American Optical Corporation | Vacuum pump |
JPS62261696A (ja) * | 1986-05-08 | 1987-11-13 | Mitsubishi Electric Corp | タ−ボ分子ポンプ装置 |
DE3826710A1 (de) * | 1987-08-07 | 1989-02-16 | Japan Atomic Energy Res Inst | Vakuumpumpe |
JPH01277698A (ja) * | 1988-04-30 | 1989-11-08 | Nippon Ferrofluidics Kk | 複合型真空ポンプ |
EP0344345B1 (fr) * | 1988-06-01 | 1991-09-18 | Leybold Aktiengesellschaft | Système à pompe pour un appareil de détection de fuite |
FR2656658B1 (fr) * | 1989-12-28 | 1993-01-29 | Cit Alcatel | Pompe a vide turbomoleculaire mixte, a deux arbres de rotation et a refoulement a la pression atmospherique. |
DE69016198T2 (de) * | 1990-07-06 | 1995-05-18 | Cit Alcatel | Zweite Stufe für mechanische Vakuumpumpeinheit und Lecküberwachungssystem zur Anwendung dieser Einheit. |
JPH05195957A (ja) * | 1992-01-23 | 1993-08-06 | Matsushita Electric Ind Co Ltd | 真空ポンプ |
US5733104A (en) * | 1992-12-24 | 1998-03-31 | Balzers-Pfeiffer Gmbh | Vacuum pump system |
GB9609281D0 (en) * | 1996-05-03 | 1996-07-10 | Boc Group Plc | Improved vacuum pumps |
DE19632375A1 (de) * | 1996-08-10 | 1998-02-19 | Pfeiffer Vacuum Gmbh | Gasreibungspumpe |
DE19634095A1 (de) * | 1996-08-23 | 1998-02-26 | Pfeiffer Vacuum Gmbh | Eingangsstufe für eine zweiflutige Gasreibungspumpe |
JP3550465B2 (ja) * | 1996-08-30 | 2004-08-04 | 株式会社日立製作所 | ターボ真空ポンプ及びその運転方法 |
-
1999
- 1999-07-05 DE DE19930952A patent/DE19930952A1/de not_active Withdrawn
-
2000
- 2000-06-13 AT AT00112483T patent/ATE246315T1/de not_active IP Right Cessation
- 2000-06-13 DE DE50003075T patent/DE50003075D1/de not_active Expired - Lifetime
- 2000-06-13 EP EP00112483A patent/EP1067290B1/fr not_active Expired - Lifetime
- 2000-06-28 JP JP2000194357A patent/JP4584420B2/ja not_active Expired - Fee Related
- 2000-07-05 US US09/609,978 patent/US6409477B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19930952A1 (de) | 2001-01-11 |
EP1067290A3 (fr) | 2001-04-11 |
JP4584420B2 (ja) | 2010-11-24 |
JP2001027195A (ja) | 2001-01-30 |
EP1067290A2 (fr) | 2001-01-10 |
ATE246315T1 (de) | 2003-08-15 |
US6409477B1 (en) | 2002-06-25 |
DE50003075D1 (de) | 2003-09-04 |
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