EP1797331A1 - Pompe a vide a friction - Google Patents
Pompe a vide a frictionInfo
- Publication number
- EP1797331A1 EP1797331A1 EP05791919A EP05791919A EP1797331A1 EP 1797331 A1 EP1797331 A1 EP 1797331A1 EP 05791919 A EP05791919 A EP 05791919A EP 05791919 A EP05791919 A EP 05791919A EP 1797331 A1 EP1797331 A1 EP 1797331A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- rotor
- pump
- vacuum pump
- cartridge
- 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
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
Definitions
- the invention relates to a Reübungvakuumpumpe with a housing having a flugclenfine pump stator, a rotor drive and a rotor bearing.
- the three housing parts are a stator housing part, an outlet housing part part, of which a cartridge having the motor and / or the bearing is held, and a bearing housing part. Between each two adjacent housing parts corresponding seals are arranged to produce the required tightness, which are difficult or impossible, for example, with a corrosion-inhibiting coating, can be coated under certain circumstances. Despite careful installation, leaks in the area of seals can never be completely ruled out. Furthermore, the temperature behavior of the entire housing is inhomogeneous because of the multi-part of the housing.
- the object of the invention is to improve the physical properties of a friction vacuum pump.
- the housing is integrally formed over its entire axial length, so that the one-piece housing surrounds the entire axial length of the pump rotor, the rotor drive and the rotor bearing.
- the integral nature of the housing ensures a homogeneous temperature behavior of the housing. By eliminating seals, the tightness of the housing is also ensured in the long term.
- the housing itself does not have to consist of several parts assembled together, so that assembly work and resulting error sources omitted by the elimination of seals in the area of the housing, the inside of the housing is easy and complete coatable.
- the friction vacuum pump housing merely has an end cap which has no supporting function and therefore does not require any particular precision in assembly.
- the one-piece design of the housing improves a large number of physical properties of the friction vacuum pump, in particular the temperature behavior, the tightness and the quality of a housing-side coating
- the rotor bearing and the rotor drive are arranged in a cartridge, which is held by the housing and is surrounded over its entire axial length of the housing.
- a cartridge is understood to mean an arrangement which consists of a cartridge housing which is cup-shaped or completely closed, and in which a shaft is rotatably mounted in a rotor bearing which can be driven by a rotor drive located in the cartridge.
- the storage and the drive are arranged completely pre-assembled in the closed or almost closed cartridge.
- the shaft protruding from the cartridge may be connected to the pump rotor, and this assembly may then be inserted into the housing with the cartridge being mounted in the housing interior.
- the cartridge has a pot-shaped housing which is formed e ⁇ nstuckig with the friction vacuum pump housing. After the rotor bearing and the rotor drive are inserted into the cup-shaped housing, the pot opening is closed by a cartridge lid. Due to the one-piece design of the friction vacuum pump housing with the cup-shaped cartridge housing, the assembly is simplified as a whole, leaks are reduced and in particular a more precise positioning of the cartridge or the rotor drive and the rotor bearing is ensured.
- the axial length of the cartridge is at least 50% surrounded by the pump rotor, i. the cartridge projects axially into the pot-shaped pump rotor with at least half of its axial length. In this way, a compact construction of the friction vacuum pump is realized with respect to the overall axial length.
- a part of the cartridge housing is formed by the friction vacuum pump housing.
- the cartridge housing has two sections, one facing the rotor side and one facing away from the rotor, from the mounting location of the cartridge on the housing.
- the portion of the cartridge facing away from the rotor may be formed by the friction vacuum pump housing, i. the cup-shaped cartridge case does not have a cartridge-type lid, but is closed by the aspiration vacuum pump housing. As a result, the number of components is reduced overall.
- the housing has on the inside a circular shoulder, on which the cartridge preferably bears on the suction side and to which it is attached
- the cartridge is preferably inserted into the housing together with the rotor from the suction nozzle.
- the cartridge is placed on the circular shoulder and preferably fastened from the pressure side of the heel with suitable fastening means, for example with threaded screws.
- the circular shoulder is easy to produce and allows a gas-tight attachment of the cartridge to the housing.
- the pump rotor is a Holweck pump rotor.
- the radial plane surface between a housing-side stator wall and a rotor-side hub can shrink towards the pressure side.
- the figure shows a Reibungsvakuumpumpe invention in longitudinal section
- a friction vacuum pump IO is shown, which is a screw pump, also called Holwcck pump.
- the friction vacuum pump 10 consists essentially of a suction-side towards the funnel-shaped narrowing housing 12, arranged in the housing 12 and mounted cartridge 14, which includes a rotor bearing, not shown, and a rotor drive, not shown, and a pump rotor 16, the plurality of helically arranged wings 18 has.
- the housing 12 is integrally formed and surrounds the entire axial length of the pump rotor 16 and the cartridge containing the rotor drive and the rotor bearing 14.
- the pressure-side end of the housing 12 is through a front-side housing cover! 20 closed.
- a circular shoulder 22 is provided on its inner circumference, on which a corresponding circular shoulder 24 of the cartridge 14 is supported gas-tight. The paragraphs 22, 24 of the housing 12 and the cartridge 14 are bolted together.
- a rotor shaft 26 From the cartridge protrudes at its suction end a rotor shaft 26 out, which holds the rotor 16.
- the rotor 16 is connected to the rotor shaft, for example screwed.
- the rotor hub 28 of the rotor 16 tapers towards the suction side.
- the inside of the housing 12 forms a stator 30, which widens towards the suction side. Due to the extension of the inner diameter of the stator and the reduction of the outer diameter of the rotor hub 28 to Saugseitc out the radial plane surface between the stator 30 and the rotor hub 28 is increased towards the Saugseitc out and reduced to the pressure side.
- the housing 12 has a gas inlet 32 at its one suction-side axial end. On the pressure side of the pump rotor 16, a radial gas outlet 34 is provided *
- the housing 12 in the part in which it encloses the vacuum not a single seal on with a subsequent GescouseteÜ.
- a homogeneous temperature behavior is realized. Coatings of the stator wall 30 are free of discontinuities. Lack of a seal between two housing parts and no leaks can occur.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Rotary Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004047930A DE102004047930A1 (de) | 2004-10-01 | 2004-10-01 | Reibungsvakuumpumpe |
PCT/EP2005/054735 WO2006037730A1 (fr) | 2004-10-01 | 2005-09-21 | Pompe a vide a friction |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1797331A1 true EP1797331A1 (fr) | 2007-06-20 |
EP1797331B1 EP1797331B1 (fr) | 2010-01-06 |
Family
ID=35427899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05791919A Not-in-force EP1797331B1 (fr) | 2004-10-01 | 2005-09-21 | Pompe a vide a friction |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080206041A1 (fr) |
EP (1) | EP1797331B1 (fr) |
JP (1) | JP2008514862A (fr) |
CN (1) | CN100458171C (fr) |
AT (1) | ATE454555T1 (fr) |
DE (2) | DE102004047930A1 (fr) |
WO (1) | WO2006037730A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3670924B1 (fr) * | 2019-11-19 | 2021-11-17 | Pfeiffer Vacuum Gmbh | Pompe à vide et procédé de fabrication d'une telle pompe à vide |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1395718B1 (it) | 2009-09-30 | 2012-10-19 | Nuovo Pignone Spa | Compressore a flusso assiale a sbalzo, reattore e metodo |
US9279417B2 (en) | 2013-04-26 | 2016-03-08 | Sol-Electrica, Llc | Solar power system |
WO2015039443A1 (fr) * | 2013-09-18 | 2015-03-26 | 北京北仪创新真空技术有限责任公司 | Pompe moléculaire résistant aux impacts atmosphériques |
CN103452872A (zh) * | 2013-09-18 | 2013-12-18 | 北京北仪创新真空技术有限责任公司 | 一种抗大气冲击的分子泵 |
CN104613008B (zh) * | 2015-02-28 | 2017-10-24 | 北京北仪创新真空技术有限责任公司 | 一种分子泵的转子 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE625444C (de) * | 1934-02-24 | 1936-02-08 | Leybold S Nachfolger A G E | Molekularluftpumpe |
JPS60139098U (ja) * | 1984-02-24 | 1985-09-13 | セイコ−精機株式会社 | 組合せ型軸流分子ポンプ |
DE3705912A1 (de) * | 1987-02-24 | 1988-09-01 | Alcatel Hochvakuumtechnik Gmbh | Hochvakuumpumpe mit einem glockenfoermigen rotor |
FR2611818B1 (fr) * | 1987-02-26 | 1991-04-19 | Cit Alcatel | Pompe rotative a vide moleculaire du type a canal de gaede |
FR2641582B1 (fr) * | 1989-01-09 | 1991-03-22 | Cit Alcatel | Pompe a vide du type a canal de gaede |
JPH03222895A (ja) * | 1990-01-26 | 1991-10-01 | Hitachi Koki Co Ltd | ねじ溝真空ポンプ |
JP3486000B2 (ja) * | 1995-03-31 | 2004-01-13 | 日本原子力研究所 | ねじ溝真空ポンプ |
DE19756837C2 (de) * | 1997-12-19 | 1999-09-30 | K Busch Gmbh Druck & Vakuum Dr | Molekular- und Viskositätspumpe |
FR2776029B1 (fr) * | 1998-03-16 | 2000-06-23 | Alsthom Cge Alcatel | Pompe turbomoleculaire |
DE19846188A1 (de) * | 1998-10-07 | 2000-04-13 | Leybold Vakuum Gmbh | Reibungsvakuumpumpe mit Stator und Rotor |
US6514035B2 (en) * | 2000-01-07 | 2003-02-04 | Kashiyama Kougyou Industry Co., Ltd. | Multiple-type pump |
US6302641B1 (en) * | 2000-01-07 | 2001-10-16 | Kashiyama Kougyou Industry Co., Ltd. | Multiple type vacuum pump |
DE10224604B4 (de) * | 2002-06-04 | 2014-01-30 | Oerlikon Leybold Vacuum Gmbh | Evakuierungseinrichtung |
-
2004
- 2004-10-01 DE DE102004047930A patent/DE102004047930A1/de not_active Withdrawn
-
2005
- 2005-09-21 AT AT05791919T patent/ATE454555T1/de not_active IP Right Cessation
- 2005-09-21 WO PCT/EP2005/054735 patent/WO2006037730A1/fr active Application Filing
- 2005-09-21 DE DE502005008839T patent/DE502005008839D1/de active Active
- 2005-09-21 JP JP2007534008A patent/JP2008514862A/ja not_active Withdrawn
- 2005-09-21 EP EP05791919A patent/EP1797331B1/fr not_active Not-in-force
- 2005-09-21 US US11/664,142 patent/US20080206041A1/en not_active Abandoned
- 2005-09-21 CN CNB2005800329501A patent/CN100458171C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006037730A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3670924B1 (fr) * | 2019-11-19 | 2021-11-17 | Pfeiffer Vacuum Gmbh | Pompe à vide et procédé de fabrication d'une telle pompe à vide |
Also Published As
Publication number | Publication date |
---|---|
US20080206041A1 (en) | 2008-08-28 |
ATE454555T1 (de) | 2010-01-15 |
JP2008514862A (ja) | 2008-05-08 |
EP1797331B1 (fr) | 2010-01-06 |
DE502005008839D1 (de) | 2010-02-25 |
CN101031724A (zh) | 2007-09-05 |
DE102004047930A1 (de) | 2006-04-06 |
CN100458171C (zh) | 2009-02-04 |
WO2006037730A1 (fr) | 2006-04-13 |
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