EP1201928A2 - Scheiben für eine Turbomolekularpumpe - Google Patents
Scheiben für eine Turbomolekularpumpe Download PDFInfo
- Publication number
- EP1201928A2 EP1201928A2 EP01122335A EP01122335A EP1201928A2 EP 1201928 A2 EP1201928 A2 EP 1201928A2 EP 01122335 A EP01122335 A EP 01122335A EP 01122335 A EP01122335 A EP 01122335A EP 1201928 A2 EP1201928 A2 EP 1201928A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- disks
- blades
- disk
- axial direction
- disc
- 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
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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
-
- 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
- F04D19/042—Turbomolecular vacuum 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
- F04D29/544—Blade shapes
-
- 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
- F05D2230/50—Building or constructing in particular ways
- F05D2230/54—Building or constructing in particular ways by sheet metal manufacturing
-
- 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
- F05D2300/171—Steel alloys
Definitions
- the invention relates to disks for a turbomolecular pump according to the preamble of the 1st claim.
- a turbomolecular pump is made up of rotor and stator disks, which alternate are arranged one behind the other and have blade rings.
- the Pumping action is based on the impulses in the blades of the rotor disks Pump direction are transferred to the molecules of the gas to be pumped.
- the two essential pump properties namely pumping speed and pressure ratio, depend strongly on the speed of the rotor disks.
- the pumping speed increases linear with the speed and the pressure ratio even exponentially.
- the rotor speed must be as high as possible his. This places high demands on the blades of the rotor disks their geometry, mechanical strength and stability.
- Another criterion for optimal pump properties is the optical tightness of the individual slices. This creates a backflow within the disc package prevented in the axial direction.
- the milled disks are made of aluminum because this material well suited for milling. In many applications, it becomes when using turbomolecular pumps required to pump corrosive gases. Because aluminum is not resistant is against corrosion, the disks produced in this way can only be used after going through an appropriate surface treatment have been made corrosion-resistant. This will make the Buckets more complex and expensive.
- the disks thus produced by punching and bending out the blades have the serious disadvantage that they are not optically dense. This leads to high backflow losses within the pump.
- Another disadvantage is that the Total mass of the blades of a disc is relatively large, based on the radial Surface of the support ring. As a result, this is highly stressed by the centrifugal force, what again the speed of the pump and thus its performance is limited.
- the invention is based on the task, disks for turbomolecular pumps to develop which do not have the disadvantages described above.
- the disks should consist of corrosion-resistant material and can be produced with little effort and inexpensively.
- the optical Tightness should be largely guaranteed and the stress caused by centrifugal force should be kept within such limits, within which the pump with maximum Speed can be operated safely.
- the disks according to the invention make it possible to manufacture them in a corrosion-resistant manner
- Use materials that make up the gas producing structure by punching slots and unscrewing the blades from the disc plane is formed.
- the joining of several partial disks leads to the optical one Tightness of the entire disc, causing backflow both inside a disc as well as within the entire disc package can be prevented.
- this construction allows the individual indexing disks with fewer blades to be equipped as a one-piece disc in order to achieve optical tightness.
- FIGS. 1-3 With the aid of FIGS. 1-3, the invention is to be illustrated using the example of one made of two partial disks existing disc for mounting on a rotor shaft are explained in more detail.
- Fig. 1 shows the two pulleys 11 and 12.
- the blades 31 and 32 arranged at an angle to the disc plane are designed to form a gas-producing structure. Between the blades there are openings in the form of radially extending slots 41 and 42.
- the two partial disks are combined to form a disk 1 in FIG. 3.
- the Fig. 2 shows an intermediate stage in which the two partial disks 11 and 12 already close to each other, but not yet connected. 3 are the the two part disks are joined together with the aid of the link plates 51 and 52. It arises thus a disc 1 with the inner support ring 2 and at an angle to the disc plane arranged blades 3. Between these are the openings in Form of radially extending slots 4.
- the blades 3 are made of the Blades 31, 32 of the dividing discs 11, 12 assembled and designed so that they are in are optically tight in the axial direction.
- the dividing disks 11, 12 are made of sheet metal bodies formed and the blades 31, 32 are made by punching and then unscrewing generated from the disk plane.
- rotor disks consisting of two partial disks were shown. Likewise, more than two partial disks can be combined to form an entire disk become. Stator disks can also be used within the scope of the invention be composed of the same kind. The blades are then usually located in the radial direction within the support ring.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims (3)
- Scheiben (1) für eine Turbomolekularpumpe, welche mit einem Tragring (2) sowie mit in einer ringförmigen Zone schräg zur Scheibenebene angeordneten Schaufeln (3) versehen sind und so Öffnungen in Form von radial verlaufenden Schlitzen (4) zwischen den Schaufeln aufweisen, dadurch gekennzeichnet, dass sie aus mehreren in axialer Richtung zusammengefügten Teilscheiben (11, 12) bestehen und diese so zusammengefügt sind, dass jeweils die Schaufeln (31, 32) einer Teilscheibe die Schlitze (41, 42) der folgenden Teilscheibe ganz oder teilweise abdecken.
- Scheiben nach Anspruch 1, dadurch gekennzeichnet, dass die Teilscheiben (11, 12) so zusammengefügt werden, dass sie in axialer Richtung optisch dicht sind.
- Scheiben nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Teilscheiben (11, 12) als Blechkörper ausgebildet sind und die Schaufeln (31, 32) durch Stanzen und anschließendes Herausdrehen aus der Scheibenebene gebildet wurden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10052637.3A DE10052637B4 (de) | 2000-10-24 | 2000-10-24 | 16.02.2001 Scheiben für eine Turbomolekularpumpe |
DE10052637 | 2000-10-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1201928A2 true EP1201928A2 (de) | 2002-05-02 |
EP1201928A3 EP1201928A3 (de) | 2003-04-16 |
EP1201928B1 EP1201928B1 (de) | 2006-11-08 |
Family
ID=7660850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01122335A Revoked EP1201928B1 (de) | 2000-10-24 | 2001-09-19 | Scheiben für eine Turbomolekularpumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US20020098088A1 (de) |
EP (1) | EP1201928B1 (de) |
JP (1) | JP4056725B2 (de) |
DE (2) | DE10052637B4 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008151770A1 (de) * | 2007-06-11 | 2008-12-18 | Wilo Ag | Laufrad aus flächigem material |
CN102062121A (zh) * | 2010-09-16 | 2011-05-18 | 格兰富水泵(苏州)有限公司 | 轴流式叶轮 |
EP3032106A1 (de) * | 2014-12-08 | 2016-06-15 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006020081A1 (de) * | 2006-04-29 | 2007-10-31 | Pfeiffer Vacuum Gmbh | Rotor- oder Statorscheibe für eine Molekularpumpe |
GB2440947A (en) * | 2006-08-16 | 2008-02-20 | Boc Group Plc | A stator blade made of at least two stacked sheets |
US8221098B2 (en) * | 2009-03-09 | 2012-07-17 | Honeywell International Inc. | Radial turbomolecular pump with electrostatically levitated rotor |
TWI424121B (zh) * | 2010-12-10 | 2014-01-21 | Prosol Corp | 渦輪分子泵浦之葉片結構改良 |
DE102014114326A1 (de) | 2014-10-02 | 2016-04-07 | Pfeiffer Vacuum Gmbh | Verfahren zur Herstellung einer Rotor- oder Statorscheibe für eine Vakuumpumpe sowie Rotor- oder Statorscheibe für eine Vakuumpumpe |
EP3051140B1 (de) * | 2015-01-29 | 2018-01-10 | Pfeiffer Vacuum Gmbh | Statorscheibe für eine vakuumpumpe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3477381A (en) * | 1966-12-30 | 1969-11-11 | Pfeiffer Vakuumtechnik | Turbo-molecular pump |
GB1275386A (en) * | 1970-04-10 | 1972-05-24 | Balzers Patent Beteilig Ag | Disc for a molecular vacuum pump |
US3748055A (en) * | 1970-07-15 | 1973-07-24 | W Becker | Rotor and stator wheel construction for a turbo molecular pump |
US4309143A (en) * | 1976-11-29 | 1982-01-05 | Kernforschungsanlage Julich Gmbh | Vane-disk type turbomolecular pump and etching method of manufacture of vane disks |
JPS5898696A (ja) * | 1981-12-09 | 1983-06-11 | Hitachi Ltd | 分子ポンプのステ−タ |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1071275B (de) * | 1959-12-17 | |||
DE2717366B2 (de) * | 1977-04-20 | 1979-10-11 | Arthur Pfeiffer-Vakuumtechnik-Wetzlar Gmbh, 6334 Asslar | Laufrad für eine Turbomolekularpumpe |
-
2000
- 2000-10-24 DE DE10052637.3A patent/DE10052637B4/de not_active Expired - Lifetime
-
2001
- 2001-09-19 DE DE50111402T patent/DE50111402D1/de not_active Expired - Lifetime
- 2001-09-19 EP EP01122335A patent/EP1201928B1/de not_active Revoked
- 2001-10-05 JP JP2001309958A patent/JP4056725B2/ja not_active Expired - Fee Related
- 2001-10-08 US US10/014,141 patent/US20020098088A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3477381A (en) * | 1966-12-30 | 1969-11-11 | Pfeiffer Vakuumtechnik | Turbo-molecular pump |
GB1275386A (en) * | 1970-04-10 | 1972-05-24 | Balzers Patent Beteilig Ag | Disc for a molecular vacuum pump |
US3748055A (en) * | 1970-07-15 | 1973-07-24 | W Becker | Rotor and stator wheel construction for a turbo molecular pump |
US4309143A (en) * | 1976-11-29 | 1982-01-05 | Kernforschungsanlage Julich Gmbh | Vane-disk type turbomolecular pump and etching method of manufacture of vane disks |
JPS5898696A (ja) * | 1981-12-09 | 1983-06-11 | Hitachi Ltd | 分子ポンプのステ−タ |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 007, no. 199 (M-240), 3. September 1983 (1983-09-03) & JP 58 098696 A (HITACHI SEISAKUSHO KK), 11. Juni 1983 (1983-06-11) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008151770A1 (de) * | 2007-06-11 | 2008-12-18 | Wilo Ag | Laufrad aus flächigem material |
CN102062121A (zh) * | 2010-09-16 | 2011-05-18 | 格兰富水泵(苏州)有限公司 | 轴流式叶轮 |
CN102062121B (zh) * | 2010-09-16 | 2013-03-27 | 格兰富水泵(苏州)有限公司 | 液体轴流式叶轮 |
EP3032106A1 (de) * | 2014-12-08 | 2016-06-15 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
Also Published As
Publication number | Publication date |
---|---|
JP2002161889A (ja) | 2002-06-07 |
EP1201928B1 (de) | 2006-11-08 |
DE50111402D1 (de) | 2006-12-21 |
DE10052637A1 (de) | 2002-05-02 |
EP1201928A3 (de) | 2003-04-16 |
JP4056725B2 (ja) | 2008-03-05 |
DE10052637B4 (de) | 2021-03-11 |
US20020098088A1 (en) | 2002-07-25 |
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