EP3049676A1 - Vakuumpumpe - Google Patents
VakuumpumpeInfo
- Publication number
- EP3049676A1 EP3049676A1 EP14761870.6A EP14761870A EP3049676A1 EP 3049676 A1 EP3049676 A1 EP 3049676A1 EP 14761870 A EP14761870 A EP 14761870A EP 3049676 A1 EP3049676 A1 EP 3049676A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing part
- vacuum pump
- pump according
- housing
- rotor shaft
- 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
- 238000001816 cooling Methods 0.000 claims abstract description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 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
- 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
- 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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/522—Casings; Connections of working fluid for axial pumps 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
Definitions
- the invention relates to a vacuum pump, in particular a turbomolecular pump.
- Vacuum pumps have a rotor shaft, which is usually connected to a plurality of rotor elements.
- the rotor elements are, for example, a plurality of rotor disks extending substantially radially relative to the rotor shaft. Between the rotor discs are usually connected to the housing or arranged in the housing stator, which is thus a plurality of individual stator devices, is provided. The individual stator disks are thus arranged between adjacent rotor disks.
- a rotor element may, for example, be rotating components of a Holweck stage, a Siegbahn stage or Gaederase, as well as a rotor of a side channel compressor. Particularly in such types of pumps, high temperatures occur due to the compression.
- the rotor shaft of the vacuum pump is further connected to a drive device such as an electric motor. Even such components often produce high temperatures. It is therefore necessary that such highly heat-generating components are cooled.
- the rotor shaft is supported by bearings.
- rolling bearings are temperature sensitive. At high operating temperatures, the lifetime decreases the rolling bearing.
- the bearings in particular the bearing arranged on the pressure side, are arranged in a small installation space and thus close to the electric drive unit, as well as in the region in which high gas compression and thus high heat loss is generated. As a result, the bearings are operated at a high operating temperature.
- the object of the invention is to reduce the operating temperature of bearings, in particular rolling bearings, with vacuum pumps with structurally simple means.
- a vacuum pump has a rotor shaft and at least one rotor element. Furthermore, at least one stator device cooperating with the at least one rotor element is provided. Furthermore, with the rotor shaft, an electric drive device, and the rotor shaft bearing bearing connected. Furthermore, the vacuum pump has a housing in which the components of the pump are arranged. In particular, the housing carries the rotor shaft via the bearings. Furthermore, the at least one stator device is indirectly or directly connected to the housing. According to the invention, the housing has a plurality of housing parts, wherein heat-sensitive components are connected to a first housing part and highly heat-generating components are connected to a second housing part.
- the high heat generated, for example, in the compressor part and / or by the drive means is dissipated, so that the operating temperature of heat-sensitive components such as in particular a bearing can be reduced.
- the strong heat generated within the pump is thus introduced as little as possible in the camp. This is inventively achieved by a simple structural measure, since the housing at least two housing parts and carry either the heat-sensitive components or the highly heat-generating components.
- the second housing part is thermally conductive connected to the drive device.
- the heat generated by the drive means can be dissipated in a simple manner.
- the second housing part is connected via a carrier part with the drive device.
- the carrier part carries further components, via which heat can be dissipated to the second housing part.
- these are components that are in communication with the compression area, so that the heat is dissipated to the second housing part from this.
- at least one stator device is connected to the carrier device. These may be, in particular, stator devices of the Holweck stage, the Siegbahn stage, the Gaederase code or a side channel compressor. A connection with such stator devices is particularly advantageous because in such stages, a high compression and thus a high heat generation takes place.
- the second housing part is therefore connected to the carrier part and / or the drive device and / or at least one stator good thermal conductivity.
- the connection is made in particular via a pressing of the components with oversize. As a result, a good heat conduction can be realized.
- the first housing part is connected to a bearing, in particular the pressure-side bearing.
- the pressure side bearing is particularly influenced in a compact design of the vacuum pump greatly by the heat of the Antriebsw adopted and / or the compression range of the pump. This is in particular, the case when this camp is surrounded by a Holweckcut or the like.
- the first housing part is additionally or instead of the connection to the bearing connected to a particular little heat-generating control device.
- first housing part and the second housing part are connected to each other via a low thermal conductivity compound.
- a low thermal conductivity compound is, for example, a screw connection, wherein optionally a sealing element such as an air gap or the like can be provided.
- a sealing element such as an air gap or the like can be provided.
- the chambers of the two housing parts are thermally decoupled from each other.
- the first housing part can be cooled more strongly, so that the operating temperature of the bearing and / or a control device is low.
- the life of a bearing can be significantly increased. This would only be possible with non-separate housing parts by the strong heat-generating components would be strongly cooled. This would involve a considerably higher energy expenditure.
- the joining of the highly heat-generating components via a carrier part, in particular by pressing, has the further advantage that in addition to a good heat transfer, the positioning of these components is defined very precisely. This is particularly useful in terms of a supported by the support member stator Holweckcut or the like. It is further preferred that the stator of the motor is connected by pressing with the carrier part. As a result, the position of the motor stator is clearly defined.
- the figure shows a highly simplified schematic sectional view of a part of a vacuum pump.
- a rotor shaft 10 carries a plurality of rotor disks 12 formed as rotor elements.
- Stator disks 16 are connected to an upper housing part 14 in the region of the turbomolecular stage or are carried by the upper housing part.
- a disc-shaped carrier 18 is firmly connected.
- the carrier 18 carries in the illustrated embodiment, two tube cylinders designed as rotor elements 20, 22 of a Holweckhand. Between the rotor elements 20, 22 of the Holweck stage, an inner stator 24 of the Holweck stage is arranged.
- the outer rotor element 22 is surrounded by a further Stator worn 26 Holweckhand, said outer stator 26 is integrally connected in the illustrated embodiment with a second housing part 28 and formed on the inside of the second housing part 28.
- the rotor shaft 10 carries a drive means 30.
- the pressure-side, in the figure lower end of the rotor shaft 10 is supported by a roller bearing 32.
- the rolling bearing 32 is arranged in a first housing part 34.
- the motor stator is fixedly connected to a support member 36 for heat dissipation of the drive device 30 and the motor stator of the drive device 30.
- the connection is made in particular by pressing.
- the support member 36 also carries the stator 24, which also by pressing with the support member 36th connected is.
- the support member 36 is then fixed and again good thermal conductivity connected to the second housing part 28. The strong heat generated in the region of the Holweck stage, as well as the strong heat generated by the drive device 30 is thus introduced to the outside in the second housing part 28 due to the good heat conductive compressions.
- the bearing 32 is connected to the first housing part 34.
- the first housing part 34 is connected to the second housing part 28, for example by means of screws or the like.
- a seal 38 is additionally provided in this area.
- the thermal conductivity between the first housing part 34 and the second housing part 28 is as low as possible. It is thereby possible to cool the first housing part 34 separately from the second housing part 28, so that the operating temperature of the bearing 32 can be reduced. This leads to an extension of the service life.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Non-Positive Displacement Air Blowers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202013008470.7U DE202013008470U1 (de) | 2013-09-24 | 2013-09-24 | Vakuumpumpe |
PCT/EP2014/069344 WO2015043962A1 (de) | 2013-09-24 | 2014-09-11 | Vakuumpumpe |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3049676A1 true EP3049676A1 (de) | 2016-08-03 |
EP3049676B1 EP3049676B1 (de) | 2019-07-10 |
EP3049676B2 EP3049676B2 (de) | 2024-10-02 |
Family
ID=51518781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14761870.6A Active EP3049676B2 (de) | 2013-09-24 | 2014-09-11 | Vakuumpumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US10221864B2 (de) |
EP (1) | EP3049676B2 (de) |
DE (1) | DE202013008470U1 (de) |
WO (1) | WO2015043962A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202013008470U1 (de) | 2013-09-24 | 2015-01-08 | Oerlikon Leybold Vacuum Gmbh | Vakuumpumpe |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3508483A1 (de) * | 1985-03-09 | 1986-10-23 | Leybold-Heraeus GmbH, 5000 Köln | Gehaeuse fuer eine turbomolekularvakuumpumpe |
JPS62168993A (ja) | 1985-11-27 | 1987-07-25 | Shimadzu Corp | ヒ−トパイプ冷却式タ−ボ分子ポンプ |
DE3613344A1 (de) | 1986-04-19 | 1987-10-22 | Pfeiffer Vakuumtechnik | Turbomolekular-vakuumpumpe fuer hoeheren druck |
US5020969A (en) | 1988-09-28 | 1991-06-04 | Hitachi, Ltd. | Turbo vacuum pump |
WO1994000694A1 (de) | 1992-06-19 | 1994-01-06 | Leybold Aktiengesellschaft | Gasreibungsvakuumpumpe |
DE19702456B4 (de) * | 1997-01-24 | 2006-01-19 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
US6926493B1 (en) * | 1997-06-27 | 2005-08-09 | Ebara Corporation | Turbo-molecular pump |
DE60037353T2 (de) | 1999-02-19 | 2008-12-04 | Ebara Corp. | Turbomolekularpumpe |
DE10107341A1 (de) | 2001-02-16 | 2002-08-29 | Pfeiffer Vacuum Gmbh | Vakuumpumpe |
JP2003269369A (ja) | 2002-03-13 | 2003-09-25 | Boc Edwards Technologies Ltd | 真空ポンプ |
JP2010025122A (ja) | 2003-02-18 | 2010-02-04 | Osaka Vacuum Ltd | 分子ポンプの断熱構造 |
GB0309830D0 (en) * | 2003-04-29 | 2003-06-04 | Boc Group Plc | A vacuum pump |
JP4703565B2 (ja) † | 2004-06-25 | 2011-06-15 | 株式会社大阪真空機器製作所 | ターボ分子ポンプの軸受支持構造 |
JP4703279B2 (ja) | 2004-06-25 | 2011-06-15 | 株式会社大阪真空機器製作所 | 複合分子ポンプの断熱構造 |
JP5420323B2 (ja) | 2009-06-23 | 2014-02-19 | 株式会社大阪真空機器製作所 | 分子ポンプ |
NO20110786A1 (no) | 2011-05-31 | 2012-12-03 | Fmc Kongsberg Subsea As | Subsea kompressor direkte drevet av en permanentmagnetmotor med en stator og rotor nedsunket i vaeske |
DE202013008470U1 (de) | 2013-09-24 | 2015-01-08 | Oerlikon Leybold Vacuum Gmbh | Vakuumpumpe |
-
2013
- 2013-09-24 DE DE202013008470.7U patent/DE202013008470U1/de not_active Expired - Lifetime
-
2014
- 2014-09-11 US US15/022,448 patent/US10221864B2/en active Active
- 2014-09-11 EP EP14761870.6A patent/EP3049676B2/de active Active
- 2014-09-11 WO PCT/EP2014/069344 patent/WO2015043962A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE202013008470U1 (de) | 2015-01-08 |
EP3049676B2 (de) | 2024-10-02 |
WO2015043962A1 (de) | 2015-04-02 |
US20160298649A1 (en) | 2016-10-13 |
EP3049676B1 (de) | 2019-07-10 |
US10221864B2 (en) | 2019-03-05 |
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