EP0608232B1 - Pompe cryogenique a carter sensiblement cupuliforme - Google Patents
Pompe cryogenique a carter sensiblement cupuliforme Download PDFInfo
- Publication number
- EP0608232B1 EP0608232B1 EP92909000A EP92909000A EP0608232B1 EP 0608232 B1 EP0608232 B1 EP 0608232B1 EP 92909000 A EP92909000 A EP 92909000A EP 92909000 A EP92909000 A EP 92909000A EP 0608232 B1 EP0608232 B1 EP 0608232B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- radiation screen
- stage
- shaped
- housing
- 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
- 230000005855 radiation Effects 0.000 claims abstract description 42
- 238000011069 regeneration method Methods 0.000 claims abstract description 14
- 230000008929 regeneration Effects 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 5
- 238000009833 condensation Methods 0.000 claims 3
- 230000005494 condensation Effects 0.000 claims 3
- 230000031700 light absorption Effects 0.000 claims 3
- 238000000151 deposition Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 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
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
- F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
- Y10S417/901—Cryogenic pumps
Definitions
- the invention relates to a cryopump with the features of the preamble of claim 1.
- the present invention has for its object to provide a cryopump with the features of the preamble of claim 1 such that the disadvantages described no longer exist.
- this object is achieved in that the condensate collecting space is arranged laterally in such a way that the pump can be regenerated even when mounted horizontally without having to accept the disadvantages of long regeneration times and / or the risk of damage to seals. Since there is always a defined "deepest point" to which the drain pipe is connected, the pump according to the invention also has the same advantages with regard to its regeneration properties as the pump already proposed for vertical mounting.
- cryopump is denoted by 1, its outer housing by 2, the cold head by 3 and the radiation shield by 4.
- Housing 2 and radiation shield 4 have an essentially cup-shaped design and are arranged concentrically to one another. Your axis is labeled 5.
- the open sides of the housing 2 and radiation shield 4 form the inlet opening 6 of the pump 1.
- the housing flange 7 is used to attach the pump to a recipient - preferably via a valve (not shown).
- the baffle 8 is located in the inlet region of the pump 1 is carried by the radiation screen 4.
- the cold head 3 extending laterally into the pump housing 2 and the radiation shield 4 is of two stages (stages 11, 12).
- the cold is generated, for example, with the aid of a refrigerator, not shown in detail, which operates according to the Gifford-McMahon principle.
- the first stage 11 of the cold head 3 is connected to the radiation shield 4 with good thermal conductivity, so that the radiation shield 4 and also the baffle 8 assume the temperature of this stage 11.
- the second stage 12 of the cold head is located in the pump interior 13. It carries the pump surfaces of the second stage, generally designated 15, via a copper block 14 that conducts heat well.
- These include outer pump surfaces 16, on which the condensable gases argon, nitrogen, oxygen, etc., accumulate.
- inner surface areas 17 covered with adsorption material are provided, which serve for the adsorption of light gases (hydrogen, helium, etc.).
- an attachment flange 21 is equipped with a recess 22 which is embedded in the inside of the respective flange.
- the recess 22 is arranged so that it is basically at the bottom, so that liquid condensate collects therein. If the recess 22 is in the attachment flange 21, the functionally correct position of the recess 22 can be ensured by suitable mounting of this attachment flange.
- the radiation shield 4 has at least in its lower region a pouring point 23 which is shaped such that condensate flowing out of the shield flows into the recess 22.
- the radiation shield 4 expediently has an edge section 24 which widens outwards.
- a collecting trough 27 is provided in the recess 22 at a distance. This prevents the flanges 7 or 21 from becoming undesirably cold.
- the drip pan 27 itself should have the lowest possible mass so that it quickly reaches the temperature of the liquid condensate. This avoids unnecessary evaporation of the condensate or ensures a quick drainage of the condensate.
- the drain pipe used to remove the condensate is designated 31. It opens directly into the recess 22 or - if the collecting trough 27 shown is present - into this collecting trough. It is led out radially through the respective flange 7 or 21. Outside the pump is the valve 32, which is opened to drain the condensate. This valve 32 is equipped with a heater 33 which protects the valve seal from harmful effects of cold due to the condensate.
- the radiation shield 4 is provided with a diameter extension on the bottom, so that the condensate collects laterally in the bottom region of the radiation shield 4 even when the pump 1 is mounted horizontally.
- the drain pipe 31, which is also led out through a bore 34 in the flange 7, is extended into the pump interior 13 in such a way that its inlet opening is located in the collecting space formed by the diameter expansion.
- a pump 1 designed in this way has the advantage that it can be installed both horizontally and vertically - and in all intermediate positions - if care is taken to ensure that the collecting space forms the lowest point with the inlet opening of the drain pipe 31.
- the bottom of the radiation shield 4 can also be appropriately curved inwards (see bottom line 35 shown in broken lines).
- an essentially crescent-shaped end plate 41 is provided which, together with the part of the radiation shield 4 located below, forms the collecting space.
- the end plate 41 is releasably attached to the edge of the radiation shield 4, so that it can be brought into the correct - lower - position in a simple manner.
- it can be equipped with a carrier 42, which has two sections 43 and 44, which surround the edge of the radiation shield 4, so that a secure hold is guaranteed.
- the drain pipe 31 can be led out of the pump 1 at any point, for example, as shown, again through a radial bore in the flange 7. It is essential that its inlet opening lies in the area of the end plate 41.
- this heater (heating conductor 45) is arranged on the inner section 43 of the carrier 42 for the end plate 41. It thus forms a unit with the end plate 41, so that when correctly installed, the sickle and heating are always in the collecting space.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
Claims (13)
- Cryopompe (1) destinée à être montée à l'horizontale, comportant un carter (2) sensiblement en forme de pot, comportant un écran de rayonnement (4) également sensiblement en forme de pot, agencé de manière concentrique dans le carter (2), comportant une ouverture d'admission (6) qui est pourvue d'un baffle (8) porté par l'écran de rayonnement (4), comportant une tête froide (3) à deux étages s'étendant dans le carter (2) et dans l'écran de rayonnement (4), dont le premier étage (11) est relié à l'écran de rayonnement (4) avec bonne conduction thermique et dont le second étage (12) est relié avec bonne conduction thermique à des surfaces de pompage (16) pour condenser de l'argon, de l'azote, de l'oxygène, etc. ainsi qu'avec des surfaces de pompage (17) pour absorber des gaz légers tels que l'hydrogène, l'hélium, etc., caractérisée en ce qu'il est prévu au-dessous des surfaces de pompage (16, 17) du second étage (12) de la tête froide (3) une chambre de collecte pour le condensat liquide qui se forme pendant la régénération de la pompe, en ce que l'écran de rayonnement (4) en forme de pot forme la chambre de collecte, son diamètre s'agrandissant de telle sorte vers le fond que l'emplacement collecteur pour le condensat liquide se trouve dans la région du fond de l'écran de rayonnement (4) en forme de pot, et en ce que l'ouverture d'admission d'un tube d'écoulement (31), qui sert pendant la régénération des surfaces de pompe (16, 17) à évacuer les gaz qui se sont déposés sur les surfaces de pompage, se trouve dans la région de la chambre de collecte.
- Pompe selon la revendication 1, caractérisée en ce que le fond de l'écran de rayonnement (4) est convexe vers l'intérieur.
- Cryopompe (1) destinée à être montée à l'horizontale, comportant un carter (2) sensiblement en forme de pot, comportant un écran de rayonnement (4) également sensiblement en forme de pot, agencé de manière concentrique dans le carter (2), comportant une ouverture d'admission (6) qui est pourvue d'un baffle (8) porté par l'écran de rayonnement (4), comportant une tête froide (3) à deux étages s'étendant dans le carter (2) et dans l'écran de rayonnement (4), dont le premier étage (11) est relié à l'écran de rayonnement (4) avec bonne conduction thermique et dont le second étage (12) est relié avec bonne conduction thermique avec des surfaces de pompage (16) pour condenser de l'argon, de l'azote, de l'oxygène, etc. ainsi qu'avec des surfaces de pompage (17) pour absorber des gaz légers tels que l'hydrogène, l'hélium, etc., caractérisée en ce qu'il est prévu au-dessous des surfaces de pompage (16, 17) du second étage (12) de la tête froide (3) une chambre de collecte pour le condensat liquide qui se forme pendant la régénération de la pompe, en ce que l'écran de rayonnement (4) en forme de pot fait partie de la chambre de collecte, en ce que le bord de l'écran de rayonnement (4) est équipé d'une tôle d'obturation (41) sensiblement en forme de croissant destinée à former la chambre de collecte pour le condensat liquide et en ce que l'ouverture d'admission d'un tube d'écoulement (31), qui sert pendant la régénération des surfaces de pompe (16, 17) à évacuer les gaz qui se sont déposés sur les surfaces de pompage, se trouve dans la région de la chambre de collecte.
- Pompe selon la revendication 3, caractérisée en ce que la tôle d'obturation (41) est fixée de manière amovible sur l'écran de rayonnement (4).
- Pompe selon la revendication 4, caractérisée en ce qu'un support (42) adapté à la forme du bord de l'écran de rayonnement (4) est prévu pour la tôle d'obturation avec des tronçons (43, 44) entourant le bord.
- Pompe selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le tube d'écoulement (31) s'étendant à l'intérieur de l'écran de rayonnement (4) est guidé vers l'extérieur grâce à un perçage radial dans la bride d'admission (7).
- Pompe selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un chauffage (45) se trouve dans la région de la chambre de collecte.
- Pompe selon les revendications 5 et 7, caractérisée en ce que le chauffage (45) est agencé sur le tronçon (43) intérieur du support (42) de la tôle d'obturation (41).
- Cryopompe (1) destinée à être montée à l'horizontale, comportant un carter (2) sensiblement en forme de pot, comportant un écran de rayonnement (4) également sensiblement en forme de pot, agencé de manière concentrique dans le carter (2), comportant une ouverture d'admission (6) qui est pourvue d'un baffle (8) porté par l'écran de rayonnement (4), comportant une tête froide (3) à deux étages s'étendant dans le carter (2) et dans l'écran de rayonnement (4), dont le premier étage (11) est relié à l'écran de rayonnement (4) avec bonne conduction thermique et dont le second étage (12) est relié avec bonne conduction thermique avec des surfaces de pompage (16) pour condenser de l'argon, de l'azote, de l'oxygène, etc. ainsi qu'avec des surfaces de pompage (17) pour absorber des gaz légers tels que l'hydrogène, l'hélium, etc., caractérisée en ce qu'il est prévu au-dessous des surfaces de pompage (16, 17) du second étage (12) de la tête froide (3) une chambre de collecte pour le condensat liquide qui se forme pendant la régénération de la pompe, en ce que la pompe présente une bride d'admission (7, 21) dont la face intérieure est équipée d'un évidement (22), en ce que le bord de l'écran de rayonnement (4) en forme de pot s'étend jusque dans la région de l'évidement (22) et en ce qu'il est équipé d'un déversoir (23, 24) de telle sorte que le condensat s'écoulant hors de l'écran de rayonnement (4) parvient dans l'évidement (22).
- Pompe selon la revendication 9, caractérisée en ce que l'évidement a la forme d'une cuve, en ce qu'un tube d'écoulement (31) débouche dans le fond de la cuve et en ce que le tube d'écoulement (31) est mené radialement vers l'extérieur à travers la bride (7, 21).
- Pompe selon l'une ou l'autre des revendications 9 et 10, caractérisée en ce que la bride pourvue de l'évidement (22) est une bride additionnelle séparée (21).
- Pompe selon l'une ou l'autre des revendications 9, 10 et 11, caractérisée en ce que l'écran de rayonnement (4) présente un tronçon de bord (24) s'élargissant vers l'extérieur.
- Pompe selon l'une quelconque des revendications 9 à 12, caractérisée en ce qu'un bac de captage (27) est placé dans l'évidement (22) avec une faible masse en respectant un faible écartement par rapport à l'évidement (22) et en ce que le tube d'écoulement (31) débouche dans le fond du bac de captage (27).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4201755 | 1992-01-23 | ||
DE4201755A DE4201755A1 (de) | 1992-01-23 | 1992-01-23 | Kryopumpe mit einem im wesentlichen topffoermigen gehaeuse |
PCT/EP1992/000869 WO1993015318A1 (fr) | 1992-01-23 | 1992-04-18 | Pompe cryogenique a carter sensiblement cupuliforme |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0608232A1 EP0608232A1 (fr) | 1994-08-03 |
EP0608232B1 true EP0608232B1 (fr) | 1997-01-22 |
Family
ID=6450093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92909000A Expired - Lifetime EP0608232B1 (fr) | 1992-01-23 | 1992-04-18 | Pompe cryogenique a carter sensiblement cupuliforme |
Country Status (5)
Country | Link |
---|---|
US (1) | US5542257A (fr) |
EP (1) | EP0608232B1 (fr) |
JP (1) | JPH07502793A (fr) |
DE (2) | DE4201755A1 (fr) |
WO (1) | WO1993015318A1 (fr) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5261244A (en) * | 1992-05-21 | 1993-11-16 | Helix Technology Corporation | Cryogenic waterpump |
DE19632123A1 (de) * | 1996-08-09 | 1998-02-12 | Leybold Vakuum Gmbh | Kryopumpe |
US5782096A (en) * | 1997-02-05 | 1998-07-21 | Helix Technology Corporation | Cryopump with improved shielding |
US6155059A (en) * | 1999-01-13 | 2000-12-05 | Helix Technology Corporation | High capacity cryopump |
US6532749B2 (en) | 1999-09-22 | 2003-03-18 | The Coca-Cola Company | Stirling-based heating and cooling device |
US6272867B1 (en) | 1999-09-22 | 2001-08-14 | The Coca-Cola Company | Apparatus using stirling cooler system and methods of use |
US6266963B1 (en) | 1999-10-05 | 2001-07-31 | The Coca-Cola Company | Apparatus using stirling cooler system and methods of use |
US6263679B1 (en) | 2000-04-05 | 2001-07-24 | Helix Technology Corporation | Particulate dam for cryopump flange |
US6550255B2 (en) | 2001-03-21 | 2003-04-22 | The Coca-Cola Company | Stirling refrigeration system with a thermosiphon heat exchanger |
US6581389B2 (en) | 2001-03-21 | 2003-06-24 | The Coca-Cola Company | Merchandiser using slide-out stirling refrigeration deck |
US7037083B2 (en) | 2003-01-08 | 2006-05-02 | Brooks Automation, Inc. | Radiation shielding coating |
US20050274128A1 (en) * | 2004-06-10 | 2005-12-15 | Genesis | Cryopump with enhanced hydrogen pumping |
US7313922B2 (en) * | 2004-09-24 | 2008-01-01 | Brooks Automation, Inc. | High conductance cryopump for type III gas pumping |
WO2006085868A2 (fr) * | 2005-02-08 | 2006-08-17 | Sumitomo Heavy Industries, Ltd. | Cryopompe amelioree |
KR100914383B1 (ko) * | 2006-06-20 | 2009-08-28 | 주식회사 엘지화학 | 폴리헤테로고리 화합물, 이를 이용한 유기 전자 소자 및 이유기 전자 소자를 포함하는 전자 장치 |
JP5254993B2 (ja) * | 2007-01-17 | 2013-08-07 | ブルックス オートメーション インコーポレイテッド | 圧力バーストが生じない大容量クライオポンプ |
JP4436863B2 (ja) * | 2007-10-29 | 2010-03-24 | キヤノンアネルバテクニクス株式会社 | 再生構造を備えた冷却トラップユニット |
KR101456892B1 (ko) * | 2008-07-01 | 2014-10-31 | 브룩스 오토메이션, 인크. | 극저온 펌프에 대한 온도 제어를 제공하기 위한 방법 및 장치 |
US9174144B2 (en) | 2012-04-20 | 2015-11-03 | Sumitomo (Shi) Cryogenics Of America Inc | Low profile cryopump |
US9186601B2 (en) | 2012-04-20 | 2015-11-17 | Sumitomo (Shi) Cryogenics Of America Inc. | Cryopump drain and vent |
JP5570550B2 (ja) * | 2012-05-21 | 2014-08-13 | 住友重機械工業株式会社 | クライオポンプ |
CN109612192A (zh) * | 2013-04-24 | 2019-04-12 | 西门子医疗有限公司 | 包括两级低温制冷机及相关联的安装装置的组件 |
WO2015143219A1 (fr) * | 2014-03-21 | 2015-09-24 | Brooks Automation, Inc. | Réseau frontal hybride de pompe cryogénique |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140820A (en) * | 1962-05-31 | 1964-07-14 | Robert E Clausing | Method for maintaining very high vacuum in a system |
FR2146100B2 (fr) * | 1971-07-16 | 1974-03-29 | Air Liquide | |
DE2512235A1 (de) * | 1975-03-20 | 1976-09-23 | Bosch Gmbh Robert | Kuehlfalle fuer vakuumanlagen |
US4719938A (en) * | 1985-01-22 | 1988-01-19 | Helix Technology Corporation | Self-cleaning valve and cryopump utilizing the same |
DE8804218U1 (fr) * | 1988-03-29 | 1988-05-11 | Leybold Ag, 6450 Hanau, De |
-
1992
- 1992-01-23 DE DE4201755A patent/DE4201755A1/de not_active Withdrawn
- 1992-04-18 DE DE59207962T patent/DE59207962D1/de not_active Expired - Fee Related
- 1992-04-18 WO PCT/EP1992/000869 patent/WO1993015318A1/fr active IP Right Grant
- 1992-04-18 JP JP4508482A patent/JPH07502793A/ja active Pending
- 1992-04-18 EP EP92909000A patent/EP0608232B1/fr not_active Expired - Lifetime
- 1992-04-18 US US08/256,796 patent/US5542257A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07502793A (ja) | 1995-03-23 |
WO1993015318A1 (fr) | 1993-08-05 |
DE59207962D1 (de) | 1997-03-06 |
DE4201755A1 (de) | 1993-07-29 |
US5542257A (en) | 1996-08-06 |
EP0608232A1 (fr) | 1994-08-03 |
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