EP3074636A1 - Rotor disc and rotor for a vacuum pump - Google Patents
Rotor disc and rotor for a vacuum pumpInfo
- Publication number
- EP3074636A1 EP3074636A1 EP14789582.5A EP14789582A EP3074636A1 EP 3074636 A1 EP3074636 A1 EP 3074636A1 EP 14789582 A EP14789582 A EP 14789582A EP 3074636 A1 EP3074636 A1 EP 3074636A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- inner ring
- rings
- retaining
- ring
- 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
- 238000013016 damping Methods 0.000 claims description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 3
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 3
- 230000035882 stress Effects 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- F04D29/26—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
- F04D29/324—Blades
-
- 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
- F04D29/002—Details, component parts, or accessories 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
- F04D29/02—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
- 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
Definitions
- Vacuum pumps such as, in particular, turbocharged vacuum pumps, have a rotor shaft mounted in a pump housing.
- the particular driven by an electric motor rotor shaft carries a rotor which is surrounded by a stator arranged in the pump housing.
- Turbomolecular pumps in particular have several rotor disks.
- the individual rotor disks have a plurality of rotor blades.
- Stator disks of the stator surrounding the rotor are arranged between adjacent rotor disks, wherein the stator disks likewise have stator vanes.
- the object of the invention is to provide a rotor disk and a rotor having a plurality of rotor disks, in which the occurrence of stresses, in particular on the inner ring of the rotor disk, is reduced.
- the rotor disk according to the invention for a vacuum pump and in particular for a turbomolecular pump has a preferably substantially cylindrical inner ring. This is connected to radially outwardly extending wing elements and in particular integrally formed.
- the inner ring has at least one expansion joint or a slot.
- the provision of such expansion joint has the advantage that this thermal stresses can be compensated. Due to the provision of the slot, the occurrence of tangential stresses is reduced or possibly even completely avoided.
- the occurrence of tangential stresses is at least significantly reduced by the provision according to the invention of an expansion joint. As a result, it is preferably possible to operate a rotor constructed from such rotor disks at higher rotational speeds.
- the at least one inner ring is surrounded by a retaining ring for fixing.
- the retaining ring is in particular a reinforcing ring, which is preferably made of fiber-reinforced plastic, such as CFRP.
- the retaining rings are at least partially formed and arranged such that a retaining ring surrounds each two adjacent inner rings of the rotor disks.
- the retaining ring surrounds two adjacent inner rings in the longitudinal direction in each case partially.
- an inner ring is thus fixed in a preferred embodiment by two retaining rings.
- the retaining rings protrude in the longitudinal direction partially over the inner ring.
- a part of the inner ring in the longitudinal direction is not surrounded by a retaining ring, wherein in this region of the inner ring the wing elements are connected to the inner ring, in particular integrally formed.
- the retaining ring covers the recesses forming the taper. A part of the retaining ring is thus on the top or bottom of the wing elements. In this way, a good damping of vibrations of the wing elements can be realized. It is particularly preferred in this embodiment that the retaining rings have fiber-reinforced plastic, wherein it is particularly preferred to form the retaining rings as CFRP tubes.
- the carrier element 22 has at its in FIG. 3 lower end a stepped holding lug 24 with a step 26 on.
- five rotor disks 10 are arranged on an outer side 28 of the carrier element in the longitudinal direction in the illustrated embodiment.
- the rotor disks 10 each have a slot or an expansion joint 30 (Fig. 1).
- the inner rings 12 of the rotor disks 10 of Gartial. Surrounding reinforcing rings 32.
- a slot 30 having inner rings 10 are pressed together and inserted into the formed as a closed rings retaining rings 32.
- a retaining ring 32 in each case surrounds two ring elements 18 of two adjacent inner rings 12 with the exception of the two outer inner rings 12.
- the lower retaining ring 32 in FIG. 3 surrounds the ring element 18 of the lower inner ring 12 and the step 26 of the retaining projection 24 of the support element 22 on the one hand.
- stator disks arranged between the rotor disks 10 are in this case formed as closed rings and are already arranged between them during assembly of the rotor disks. It is also possible that these are, for example, two-part stator disks, which are inserted from the outside between two adjacent rotor disks 10 after complete assembly of the rotor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202013010937.8U DE202013010937U1 (en) | 2013-11-30 | 2013-11-30 | Rotor disc and rotor for a vacuum pump |
PCT/EP2014/073143 WO2015078648A1 (en) | 2013-11-30 | 2014-10-28 | Rotor disc and rotor for a vacuum pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3074636A1 true EP3074636A1 (en) | 2016-10-05 |
EP3074636B1 EP3074636B1 (en) | 2017-09-20 |
Family
ID=51795643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14789582.5A Active EP3074636B1 (en) | 2013-11-30 | 2014-10-28 | Rotor disc and rotor for a vacuum pump |
Country Status (8)
Country | Link |
---|---|
US (1) | US9932987B2 (en) |
EP (1) | EP3074636B1 (en) |
JP (1) | JP6118951B2 (en) |
KR (1) | KR101758033B1 (en) |
CN (1) | CN105874209B (en) |
DE (1) | DE202013010937U1 (en) |
SG (1) | SG11201604214YA (en) |
WO (1) | WO2015078648A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014100622A1 (en) * | 2014-01-21 | 2015-07-23 | Pfeiffer Vacuum Gmbh | Method for producing a rotor assembly for a vacuum pump and rotor assembly for a vacuum pump |
EP4390144A3 (en) * | 2022-12-22 | 2024-07-10 | Pfeiffer Vacuum Technology AG | Vacuum pump |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1185625B (en) * | 1963-07-19 | 1965-01-21 | Bmw Triebwerkbau Ges M B H | One-piece cast impeller for hot steam or gas turbines |
JPS59113990A (en) | 1982-12-22 | 1984-06-30 | Hitachi Ltd | Production of rotor for turbo molecular pump |
JPS60234777A (en) | 1984-05-04 | 1985-11-21 | Hitachi Ltd | Manufacture of rotor for turbo molecular pump |
US4702671A (en) * | 1985-05-30 | 1987-10-27 | General Electric Company | Slip ring expansion joint |
JP3160039B2 (en) * | 1991-08-22 | 2001-04-23 | エヌティエヌ株式会社 | Turbo molecular pump and rotor blade processing method |
DE10020673C2 (en) * | 2000-04-27 | 2002-06-27 | Mtu Aero Engines Gmbh | Ring structure in metal construction |
US6846159B2 (en) | 2002-04-16 | 2005-01-25 | United Technologies Corporation | Chamfered attachment for a bladed rotor |
DE102007048703A1 (en) | 2007-10-11 | 2009-04-16 | Oerlikon Leybold Vacuum Gmbh | Multi-stage turbomolecular pump pump rotor |
CN101424276A (en) * | 2007-10-29 | 2009-05-06 | 乐金电子(天津)电器有限公司 | Fixation clamp for air conditioner fan |
CN201241862Y (en) * | 2007-12-19 | 2009-05-20 | 泰维科技股份有限公司 | Combined minitype axial flow fan |
EP2322763A1 (en) | 2009-11-17 | 2011-05-18 | Siemens Aktiengesellschaft | Turbine or compressor blade |
JP5106588B2 (en) | 2010-07-16 | 2012-12-26 | Necアクセステクニカ株式会社 | Connected structure |
JP2013194870A (en) * | 2012-03-22 | 2013-09-30 | Nisshin Steel Co Ltd | Method of connecting metal tube |
US20140037488A1 (en) * | 2012-07-31 | 2014-02-06 | John Stewart Glen | Vane-type Compressors and Expanders with Minimal Internal Energy Losses |
-
2013
- 2013-11-30 DE DE202013010937.8U patent/DE202013010937U1/en not_active Expired - Lifetime
-
2014
- 2014-10-28 US US15/039,183 patent/US9932987B2/en active Active
- 2014-10-28 WO PCT/EP2014/073143 patent/WO2015078648A1/en active Application Filing
- 2014-10-28 JP JP2016535141A patent/JP6118951B2/en active Active
- 2014-10-28 KR KR1020167014443A patent/KR101758033B1/en active IP Right Grant
- 2014-10-28 EP EP14789582.5A patent/EP3074636B1/en active Active
- 2014-10-28 CN CN201480064009.7A patent/CN105874209B/en active Active
- 2014-10-28 SG SG11201604214YA patent/SG11201604214YA/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE202013010937U1 (en) | 2015-03-02 |
US9932987B2 (en) | 2018-04-03 |
KR101758033B1 (en) | 2017-07-14 |
JP6118951B2 (en) | 2017-04-19 |
KR20160070159A (en) | 2016-06-17 |
CN105874209B (en) | 2017-11-03 |
SG11201604214YA (en) | 2016-07-28 |
JP2016538472A (en) | 2016-12-08 |
WO2015078648A1 (en) | 2015-06-04 |
EP3074636B1 (en) | 2017-09-20 |
US20170023002A1 (en) | 2017-01-26 |
CN105874209A (en) | 2016-08-17 |
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