EP0354263B1 - Compresseur alimentant un réfrigérateur cryogénique en hélium - Google Patents
Compresseur alimentant un réfrigérateur cryogénique en hélium Download PDFInfo
- Publication number
- EP0354263B1 EP0354263B1 EP88113059A EP88113059A EP0354263B1 EP 0354263 B1 EP0354263 B1 EP 0354263B1 EP 88113059 A EP88113059 A EP 88113059A EP 88113059 A EP88113059 A EP 88113059A EP 0354263 B1 EP0354263 B1 EP 0354263B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooler
- helium
- compressor
- housing
- oil
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/006—Cooling of compressor or motor
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
Definitions
- the invention relates to a compressor arrangement for supplying a cryogenic refrigerator with helium with a compressor, with a compressor housing, with a cooler through which compressed helium flows and which is accommodated in a separate housing, with connecting lines between the housings and with means for removal of oil from the compressed helium.
- Cryogenic refrigerators are cryogenic chillers in which thermodynamic cycle processes take place.
- a single-stage cryo-refrigerator essentially comprises a compressor, connecting lines and a cold head with a displacer in a work space, hereinafter referred to as the chamber.
- the chamber is alternately connected to a high-pressure and a low-pressure helium source so that the thermodynamic cycle (Stirling process, Gifford / Mc Mahon process, etc.) takes place during the reciprocating movement of the displacer.
- the working gas is conducted in a closed circuit. The result is that heat is extracted from a certain area of the chamber.
- a two-stage refrigerator of this type e.g. Generate temperatures below 10 K.
- a cryo refrigerator of the type mentioned is known. It is equipped with a compressor in which the helium expanded in the refrigerator is compressed again from 7 bar (low pressure) to 22 bar (high pressure). Almost all of the power required for this compression is converted into heat. About 25% of this heat is absorbed by the helium and approx. 75% by the operating oil of the compressor. In a cleaning stage that follows the compression and cooling, the helium is freed from the oil taken up during the compression. Cleaning stages of this type are relatively complex, since not insignificant amounts of oil are carried away by the helium stream.
- a refrigerator which is preferably suitable for household refrigerators.
- a cooler equipped with a fan is provided to dissipate the heat.
- the blower creates air movements and inevitably also dust swirls.
- a compressor of this type can therefore not be used directly in refrigerators which are installed in racks in which the electronic supply and measuring devices required for carrying out low-temperature experiments are also located. It is particularly disadvantageous that air-cooled compressors of this type cannot be used in dust-free "cleanrooms".
- the heat given off in the room is particularly problematic since the output of conventional compressors for cryogenic refrigerators is 3 to 7 KW. It contributes to considerable room heating, which is particularly annoying in summer and can lead to problems with electronic devices.
- the present invention has for its object to provide an air-cooled compressor for supplying a cryo-refrigerator with helium, which is simpler in terms of the means for removing the oil absorbed by the helium and which no longer have the disadvantages described above.
- this object is achieved by the characterizing features of claim 1. Since most of the oil absorbed by the helium can be transferred to the oil circuit as a condensed liquid, others are special elaborate oil separators are no longer required. As a result of accommodating both coolers in a separate housing, the size of the compressor housing can also be chosen to be so small that it can be installed in the frames for electronic components (racks).
- the connecting lines to the refrigerator can be kept short.
- the connecting lines between the compressor and the combined cooler can be chosen so long that the cooler can be arranged outside the room, for example a "clean room" in which the refrigerator is located. Placing the cooler outdoors is particularly advantageous.
- the refrigerator to be supplied with helium is designated by 1 in FIG. It is connected to the compressor 4 via the gas connecting lines 2 and 3.
- the connecting lines 2, 3 are connected to the refrigerator 1 and the compressor housing 4 via self-sealing couplings 5, 6 and 7, 8.
- the actual compressor 11 is located within the compressor housing 4, the input of which is connected via the line 12 to the connecting line 2 between the compressor housing 4 and the refrigerator 1.
- a line section 13 connects to the outlet of the compressor 11 and leads to the self-sealing coupling 14 on the compressor housing 4. This is followed by a line 15, which leads to the separate cooler housing 16.
- the helium cooler 17, the oil cooler 18 and the blower 19 are located within the cooler housing 16.
- the arrangement is such that the air flow generated by the suction blower 19 (or - when the blower is arranged in front of the helium cooler - pressing air flow) first the helium cooler 17 and only then hits the oil cooler 18.
- the helium cooler 17 is connected via the line section 21 to the self-sealing coupling 22, to which the line 15 is connected, which is connected to the compressor via the self-sealing coupling 14.
- the line section 23 located within the cooler housing 16, which is again connected to the compressor housing 4 via self-sealing couplings 24 and 25 and the line 26.
- the relaxed helium gelant via lines 2 and 12 to the compressor 11 and is compressed to the required pressure.
- the compressed and heated helium reaches the helium cooler 17 via the line sections 13, 15 and 21. In this cooler, it is cooled to the desired temperature of maximum 40 ° C. and reaches the refrigerator 1 again via the line sections 23, 26, 27 and 3.
- Oil contaminants of the helium gas are separated in the separators 28 and 29 and in the adsorber 31. The separated oil is fed back to the compressor 11 via the lines 32 and 33.
- the feed pump 34 located in the compressor housing 4, which is arranged in the line section 35, serves to transport the operating oil of the compressor 11 in an oil circuit.
- the oil circuit comprises this line section 35, the lines 36 and 37, the oil cooler 18 and the line sections 38, 39 and 40.
- the line sections 35 and 40 are accommodated within the compressor housing 4; the line sections 37 and 38 are located in the cooler housing 16.
- Self-sealing couplings 41 to 44 serve to couple the connecting lines 36 and 39 to the compressor housing 4 and to the cooler housing 16. This prevents contamination of the media, oil and helium, which is carried.
- FIG. 2 shows a view of the cooler housing 16 with the walls shown broken away in the area of the blower 19.
- Three housing sections 51, 52 and 53 are provided.
- the helium cooler 17 is located in the first or front section 51 with respect to the flowing cooling air (arrows 54).
- the oil cooler 18 (not visible).
- a cross-flow fan 19 is accommodated in the third section 53.
- the length of the rotor 19 drum rotor
- the drive motor 56 of the fan 19 is accommodated in an attachment 55 on the housing 16. In this embodiment, it is possible to have a strong one, via the cooler 17 and 18 to produce a substantially uniformly distributed air flow.
- FIG. 3 shows the manner in which the helium cooler 17 (in the housing section 51) and the oil cooler 18 (in the housing section 52) are flowed through.
- the supply and discharge lines (15, 36 and 26, 39) for helium and oil are connected to a lower, divided inlet and outlet box 61 and 62 in the foot of the housing sections 51 and 52, respectively.
- the central regions of the housing sections 51, 52 have vertical pipe sections 63 which are flowed through from bottom to top or top to bottom. The redirection takes place in an upper box.
- the air flow generated by the fan 19 in the housing section 53 flows perpendicular to this.
- Figure 4 shows a view of the compressor housing 4 and the cooler housing 16, connected by the parallel and spaced lines 15, 26, 36 and 39.
- an electrical supply line 57 is provided.
- the lines 15, 26, 26 and 39 are connected to the compressor housing 4 and the cooler housing 16 via self-sealing couplings. They are expediently designed to be flexible, so that the arrangement of the cooler 16 with respect to the compressor can be selected as desired. It is particularly advantageous to use corrugated hoses made of metal (stainless steel) as connecting lines, which are kept at a distance by means of clips. Part of the heat absorbed by the helium and oil is then released to the environment in the area of the connecting lines.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Compressor (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Claims (8)
- Agencement de compresseur pour alimenter en hélium un réfrigérateur cryogénique (1), comportant un compresseur (11), une enceinte de compresseur (4), un refroidisseur (17) parcouru par l'hélium comprimé, ce refroidisseur étant agencé dans une enceinte séparée (16), des conduites de liaison (15, 26, 36, 39) entre les enceintes (4) et (16) ainsi que des moyens (28, 29, 31, 45 à 47) pour enlever l'huile de l'hélium comprimé, caractérisé par les caractéristiques suivantes :a) il est prévu un autre refroidisseur (18) parcouru par l'huile de fonctionnement du compresseur (11);b) il est prévu un ventilateur (19) pour produire un courant d'air de refroidisseur;c) le refroidisseur (18) pour l'huile ainsi que le ventilateur (19) sont agencés, conjointement avec le refroidisseur (17) pour l'hélium, dans l'enceinte (16) séparée de l'enceinte (4) du compresseur (11);d) par rapport au courant d'air produit par le ventilateur (19), le refroidisseur (17) pour l'hélium est en amont du refroidisseur d'huile (18);e) afin de transférer au circuit d'huile l'huile condensée dans le refroidisseur d'hélium (17), les portions de conduite (23, 38) se raccordant aux refroidisseurs (17 et 18) sont reliées l'une à l'autre par une conduite qui est soit dotée d'une vanne ou valve (46), soit réalisée en tant que capillaire (47).
- Agencement de compresseur selon revendication 1, caractérisé par le fait que les conduites (15, 26, 36, 39) sont souples.
- Agencement de compresseur selon revendication 2, caractérisé par le fait que les conduites (15, 26, 36, 39) sont constituées par des tuyaux métalliques souples.
- Agencement de compresseur selon revendication 1, 2 ou 3, caractérisé par le fait que les conduites de liaison (15, 26, 36, 39) sont reliées, par des raccords à auto-étanchéité, à l'enceinte (4) du compresseur et/ou selon le cas à l'enceinte (16) des moyens refroidisseurs.
- Agencement de compresseur selon l'une des revendications précédentes, caractérisé par le fait que le ventilateur (19) est réalisé sous la forme d'un ventilateur à courant transversal.
- Agencement de compresseur selon revendication 5, caractérisé par le fait que le rotor à tambour du ventilateur à courant transversal est en aval des deux refroidisseurs (17, 18) et par le fait que la longueur du rotor à tambour correspond à la hauteur des refroidisseurs (17, 18).
- Agencement de compresseur selon l'une des revendications précédentes, caractérisé par le fait que l'enceinte (16) des moyens refroidisseurs comporte trois portions (51, 52, 53) dans lesquelles se trouvent le refroidisseur d'hélium (17), le refroidisseur d'huile (18) et le ventilateur (19).
- Agencement de compresseur selon revendication 7, caractérisé par le fait que les portions d'enceinte (51, 52) présentent chacune un caisson inférieur d'entrée et sortie partagé (respectivement 61, 62), des portions de tube (63) s'étendant verticalement, parcourues par le fluide à refroidir, et un caisson de changement de direction (64, 65) situé en position supérieure.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88113059T ATE74420T1 (de) | 1988-08-11 | 1988-08-11 | Kompressor zur versorgung eines kryorefrigerators mit helium. |
DE8810215U DE8810215U1 (de) | 1988-08-11 | 1988-08-11 | Kompressor zur Versorgung eines Kryo-Refrigerators mit Helium |
EP88113059A EP0354263B1 (fr) | 1988-08-11 | 1988-08-11 | Compresseur alimentant un réfrigérateur cryogénique en hélium |
DE8888113059T DE3869776D1 (de) | 1988-08-11 | 1988-08-11 | Kompressor zur versorgung eines kryo-refrigerators mit helium. |
JP1204006A JPH0282059A (ja) | 1988-08-11 | 1989-08-08 | 低温冷凍機にヘリウムを供給するためのコンプレッサ |
US07/392,839 US4967572A (en) | 1988-08-11 | 1989-08-11 | Compressor assembly for supplying helium to a cryo-refrigerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP88113059A EP0354263B1 (fr) | 1988-08-11 | 1988-08-11 | Compresseur alimentant un réfrigérateur cryogénique en hélium |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0354263A1 EP0354263A1 (fr) | 1990-02-14 |
EP0354263B1 true EP0354263B1 (fr) | 1992-04-01 |
Family
ID=8199196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88113059A Expired - Lifetime EP0354263B1 (fr) | 1988-08-11 | 1988-08-11 | Compresseur alimentant un réfrigérateur cryogénique en hélium |
Country Status (5)
Country | Link |
---|---|
US (1) | US4967572A (fr) |
EP (1) | EP0354263B1 (fr) |
JP (1) | JPH0282059A (fr) |
AT (1) | ATE74420T1 (fr) |
DE (2) | DE3869776D1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0933123A (ja) * | 1995-07-19 | 1997-02-07 | Daikin Ind Ltd | 極低温冷凍装置 |
TW426798B (en) * | 1998-02-06 | 2001-03-21 | Sanyo Electric Co | Stirling apparatus |
ATE356961T1 (de) * | 1998-11-02 | 2007-04-15 | Sanyo Electric Co | Stirling-vorrichtung |
US6378312B1 (en) * | 2000-05-25 | 2002-04-30 | Cryomech Inc. | Pulse-tube cryorefrigeration apparatus using an integrated buffer volume |
US6488120B1 (en) * | 2000-09-15 | 2002-12-03 | Shi-Apd Cryogenics, Inc. | Fail-safe oil lubricated helium compressor unit with oil-free gas delivery |
GB2408071B (en) * | 2002-08-17 | 2005-10-19 | Siemens Magnet Technology Ltd | Pressure relief valve for a helium gas compressor |
CN1306229C (zh) * | 2005-04-25 | 2007-03-21 | 中国科学院理化技术研究所 | 采用油润滑压缩机驱动的斯特林制冷系统 |
CN100441980C (zh) * | 2006-04-28 | 2008-12-10 | 中国科学院理化技术研究所 | 油润滑压缩机供气的循环制冷装置 |
US8978400B2 (en) * | 2009-11-09 | 2015-03-17 | Sumitomo (Shi) Cryogenics Of America Inc. | Air cooled helium compressor |
DE102011012644A1 (de) * | 2011-02-28 | 2012-08-30 | Gea Bock Gmbh | Kälteanlage |
JP2024503798A (ja) * | 2020-12-21 | 2024-01-29 | サルエアー エルエルシー | ガス圧縮機用クーラーマウント配置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2100716A (en) * | 1933-04-03 | 1937-11-30 | Lipman Patents Corp | Motor-compressor unit for refrigerating apparatus |
US3353370A (en) * | 1966-04-12 | 1967-11-21 | Garrett Corp | Movable, closed-loop cryogenic system |
US3507322A (en) * | 1969-05-08 | 1970-04-21 | Freez Porter Systems Inc | Apparatus for handling perishable materials |
US3740964A (en) * | 1971-06-14 | 1973-06-26 | Tomeco Inc | Portable air conditioner |
FR2206485A1 (fr) * | 1972-11-10 | 1974-06-07 | Aurore | |
DE3028217A1 (de) * | 1980-07-25 | 1982-02-18 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Einrichtung zur erzeugung tiefer temperaturen |
DE3201496A1 (de) * | 1982-01-20 | 1983-07-28 | Leybold-Heraeus GmbH, 5000 Köln | Refrigerator |
US4799359A (en) * | 1986-02-27 | 1989-01-24 | Helix Technology Corporation | Cryogenic refrigerator compressor with externally adjustable by-pass/relief valve |
US4831828A (en) * | 1987-05-27 | 1989-05-23 | Helix Technology Corporation | Cryogenic refrigerator having a convection system to cool a hermetic compressor |
-
1988
- 1988-08-11 DE DE8888113059T patent/DE3869776D1/de not_active Expired - Fee Related
- 1988-08-11 AT AT88113059T patent/ATE74420T1/de not_active IP Right Cessation
- 1988-08-11 EP EP88113059A patent/EP0354263B1/fr not_active Expired - Lifetime
- 1988-08-11 DE DE8810215U patent/DE8810215U1/de not_active Expired - Lifetime
-
1989
- 1989-08-08 JP JP1204006A patent/JPH0282059A/ja active Pending
- 1989-08-11 US US07/392,839 patent/US4967572A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0354263A1 (fr) | 1990-02-14 |
DE8810215U1 (de) | 1990-02-08 |
US4967572A (en) | 1990-11-06 |
DE3869776D1 (de) | 1992-05-07 |
JPH0282059A (ja) | 1990-03-22 |
ATE74420T1 (de) | 1992-04-15 |
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