FR2512183A1 - BATH CRYOSTAT - Google Patents

BATH CRYOSTAT Download PDF

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Publication number
FR2512183A1
FR2512183A1 FR8214246A FR8214246A FR2512183A1 FR 2512183 A1 FR2512183 A1 FR 2512183A1 FR 8214246 A FR8214246 A FR 8214246A FR 8214246 A FR8214246 A FR 8214246A FR 2512183 A1 FR2512183 A1 FR 2512183A1
Authority
FR
France
Prior art keywords
cryostat
bath
volume
isothermal
capillary structure
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
Application number
FR8214246A
Other languages
French (fr)
Other versions
FR2512183B1 (en
Inventor
Hans Georg Maschmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dornier System GmbH
Original Assignee
Dornier System GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dornier System GmbH filed Critical Dornier System GmbH
Publication of FR2512183A1 publication Critical patent/FR2512183A1/en
Application granted granted Critical
Publication of FR2512183B1 publication Critical patent/FR2512183B1/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L7/00—Heating or cooling apparatus; Heat insulating devices
    • B01L7/04—Heat insulating devices, e.g. jackets for flasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L7/00—Heating or cooling apparatus; Heat insulating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/10—Vessels not under pressure with provision for thermal insulation by liquid-circulating or vapour-circulating jackets
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use
    • F17C2270/0518—Semiconductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Bath cryostat for keeping isothermal the surface of a closed volume by means of a liquefied gas, which cryostat operates independent of position and even under zero gravity, characterised in that the surface of the volume to be kept isothermal has, on its outside which establishes the contact to the coolant, a capillary structure by which the surface is wetted constantly and is maintained at a fixed temperature.

Description

La présente invention concerne un cryostat à bain qui maintient un volume fermé isotherme au moyen d'un gaz liquéfié, et ce indépendamment de sa position et même en état d'apesanteur. The present invention relates to a bath cryostat which maintains an isothermal closed volume by means of a liquefied gas, regardless of its position and even in a state of weightlessness.

En état d' apesanteur, essentiellement dans l'espace, on a jusqu' alors utilisé des cryostats qui ne se différencient que faiblement de ceux qui sont utilisés sur la surface terrestre (il). Par ailleurs, la seule différence essentielle réside dans la soupape du réservoir qui empêche que du gaz liquéfié ne s'échappe. Pendant la mise en service, l'agent réfrigérant se disperse, si bien que la surface entière du volume à maintenir isotherme ne se trouve plus en contact avec le gaz liquéfié. Une répartition uniforme de l'agent réfrigérant n'est plus assurée.Précisément pendant les phases d'accélération, l'agent réfrigérant liquide se rassemble dans une partie du réservoir, et des parties de la surface à refroidir demeurent sèches et peuvent s'échauffer, car les parois minces en acier inoxydable, utilisées pour la plupart dans ce cas, conduisent ou répartissent médiocrement la température. Toutefois, déjà par suite d'un échauffement de courte durée, certains appareils, par exemple des détecteurs à semi-conducteurs, peuvent être endommagés de façon irréparable, ou encore devenir momentanément inutilisables. In a state of weightlessness, essentially in space, we have so far used cryostats which differ only slightly from those used on the earth's surface (il). Furthermore, the only essential difference lies in the tank valve which prevents liquefied gas from escaping. During commissioning, the refrigerant disperses so that the entire surface of the volume to be kept insulated is no longer in contact with the liquefied gas. Uniform distribution of the refrigerant is no longer ensured. Precisely during the acceleration phases, the liquid refrigerant collects in part of the tank, and parts of the surface to be cooled remain dry and can heat up. , because the thin stainless steel walls, used for the most part in this case, poorly conduct or distribute the temperature. However, already as a result of short-term heating, certain devices, for example semiconductor detectors, can be irreparably damaged, or even become temporarily unusable.

Le but de l'invention est de réaliser un cryostat qui maintienne isotherme la surface d'un volume fermé à l'aide d'un gaz liquéfié, et ceci indépendamment de sa position et même en état d'apesanteur. The object of the invention is to produce a cryostat which keeps the surface of a closed volume isothermal using liquefied gas, regardless of its position and even in a state of weightlessness.

L'objectif précité est atteint selon l'invention par le fait que la surface métallique du volume à maintenir isotherme présente sur son côté extérieur, qui constitue le contact avec l'agent réfrigérant, une structure capillaire mince de surface, de sorte que la surface est constamment mouillée et se trouve maintenue à une température fixe. The aforementioned objective is achieved according to the invention by the fact that the metal surface of the volume to be kept insulated has on its outer side, which constitutes contact with the refrigerant, a thin capillary surface structure, so that the surface is constantly wet and is kept at a fixed temperature.

Les avantages de l'invention sont notamment
- une facilité de réalisation
- pratiquement pas de poids excédentaire
- un refroidissement fiable dans toutes les conditions de
service et de position spatiale.The advantages of the invention are in particular
- ease of implementation
- practically no excess weight
- reliable cooling under all conditions
service and spatial position.

Selon une autre caractéristique, ladite structure capillaire est réalisée par abrasion ou rodage. According to another characteristic, said capillary structure is produced by abrasion or lapping.

Selon une autre caractéristique encore, la structure capillaire est obtenue par application d'un réseau ou d'un filet ou par dépôt d'un revêtement poreux. According to yet another characteristic, the capillary structure is obtained by applying a network or a net or by depositing a porous coating.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui va suivre d'un exemple de réalisation, donné à titre indicatif, mais nullement limitatif, en référence au dessin annexé, dans lequel
La figure unique représente un cryostat conforme à l'invention.Other characteristics and advantages of the invention will emerge clearly from the description which follows of an exemplary embodiment, given by way of indication, but in no way limiting, with reference to the appended drawing, in which
The single figure represents a cryostat according to the invention.

En se référant à cette figure, on peut voir que le volume 1 à maintenir isotherme, présente une surface 2 qui est pourvue extérieurement d'une structure capillaire 3. La chambre 1 se trouve àlintérieur d'un réservoir 4, qui est partiellement rempli d'un gaz liquéfié 5. Le réservoir est entouré extérieurement par une isolation 6. Même si, par exemple, lors d'une accélération, la totalité de l'agent réfrigérant liquide 5 se rassemble d'un côté du réservoir, le liquide 5 peut se répartir, grâce à la structure capillaire 3, sur toute la surface 2 et la refroidir efficacement. Le volume 1 ne doit pas nécessairement, comme représenté à titre d'exemple, être de forme sphérique. On peut également utiliser conformément à l'invention des corps d'une toute autre forme. Referring to this figure, it can be seen that the volume 1 to be kept isothermal has a surface 2 which is externally provided with a capillary structure 3. The chamber 1 is located inside a reservoir 4, which is partially filled with liquefied gas 5. The tank is surrounded on the outside by insulation 6. Even if, for example, during an acceleration, all of the liquid refrigerant 5 collects on one side of the tank, the liquid 5 can spread, thanks to the capillary structure 3, over the entire surface 2 and cool it effectively. Volume 1 need not, as shown by way of example, be spherical. Can also be used according to the invention of bodies of any other shape.

Il est entendu que l'on peut mettre en oeuvre l'invention selon de nombreuses modifications et variantes sans toutefois s'écarter de son cadre et de son esprit.  It is understood that the invention can be implemented according to numerous modifications and variants without however departing from its scope and spirit.

Claims (3)

REVENDICATIONS 1. Cryostat à bain pour maintenir isotherme la surface d'un volume fermé à l'aide d'un gaz liquéfié et qui opère indépendamment de sa position et même en état d'apesanteur, caractérisé par le fait que la surface métallique (2) du volume (1) destinée à être maintenue isotherme, présente sur le côté extérieur, qui constitue le contact avec l'agent réfrigérant (5), une structure capillaire mince de surface (3), de sorte que la surface est constamment mouillée et se trouve maintenue à une température fixe. 1. Cryostat in a bath to keep isothermal the surface of a closed volume using liquefied gas and which operates independently of its position and even in a state of weightlessness, characterized in that the metal surface (2) of the volume (1) intended to be kept isothermal, present on the external side, which constitutes contact with the cooling agent (5), a thin capillary surface structure (3), so that the surface is constantly wetted and becomes found to be maintained at a fixed temperature. 2. Cryostat à bain selon la revendication 1, caractérisé par le fait que la structure capillaire (3) est réalisée par abrasion ou par rodage. 2. Bath cryostat according to claim 1, characterized in that the capillary structure (3) is produced by abrasion or by lapping. 3. Cryostat à bain selon la revendication 1, caractérisé par le fait que la structure capillaire (3) est obtenue par application d'un réseau ou d'un filet ou par dépôt d'une couche de revêtement poreuse.  3. Bath cryostat according to claim 1, characterized in that the capillary structure (3) is obtained by applying a network or a net or by depositing a porous coating layer.
FR8214246A 1981-08-27 1982-08-16 BATH CRYOSTAT Granted FR2512183A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3133965A DE3133965C2 (en) 1981-08-27 1981-08-27 Bath cryostat

Publications (2)

Publication Number Publication Date
FR2512183A1 true FR2512183A1 (en) 1983-03-04
FR2512183B1 FR2512183B1 (en) 1985-01-25

Family

ID=6140274

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8214246A Granted FR2512183A1 (en) 1981-08-27 1982-08-16 BATH CRYOSTAT

Country Status (2)

Country Link
DE (1) DE3133965C2 (en)
FR (1) FR2512183A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239221A1 (en) * 1986-02-25 1987-09-30 Micromeritics Instrument Corporation A temperature controlling apparatus for use with pore volume and surface area analyzers and method for operating the same
USRE33567E (en) * 1986-02-25 1991-04-09 Micromeritics Instrument Corporation Temperature controlling apparatus for use with pore volume and surface area analyzers

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1158765A (en) * 1956-07-13 1958-06-19 British Oxygen Co Ltd Liquefied gas container
GB897130A (en) * 1957-09-04 1962-05-23 Stewart Warner Corp Heat exchanger
US3066499A (en) * 1959-01-02 1962-12-04 Stewart Warner Corp Electronic cooling by wick boiling and evaporation
US3315478A (en) * 1965-06-29 1967-04-25 Hughes Aircraft Co Cryogenic transfer arrangement
GB1078107A (en) * 1963-12-12 1967-08-02 Comp Generale Electricite Cooling apparatus
US3402767A (en) * 1964-11-23 1968-09-24 Euratom Heat pipes
US3465813A (en) * 1967-07-26 1969-09-09 Trw Inc Method of and means for increasing the heat transfer capability of a heat pipe
GB1302363A (en) * 1968-11-01 1973-01-10
FR2335282A1 (en) * 1975-12-18 1977-07-15 Q Dot Corp Finned heat exchanger for refrigerant - has internally cut spiral capillary groove to guide fluid flow
US4220012A (en) * 1976-09-13 1980-09-02 Brister Beryle D Apparatus for freezing a slug of liquid in a section of a large diameter fluid transmission line

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1158765A (en) * 1956-07-13 1958-06-19 British Oxygen Co Ltd Liquefied gas container
GB897130A (en) * 1957-09-04 1962-05-23 Stewart Warner Corp Heat exchanger
US3066499A (en) * 1959-01-02 1962-12-04 Stewart Warner Corp Electronic cooling by wick boiling and evaporation
GB1078107A (en) * 1963-12-12 1967-08-02 Comp Generale Electricite Cooling apparatus
US3402767A (en) * 1964-11-23 1968-09-24 Euratom Heat pipes
US3315478A (en) * 1965-06-29 1967-04-25 Hughes Aircraft Co Cryogenic transfer arrangement
US3465813A (en) * 1967-07-26 1969-09-09 Trw Inc Method of and means for increasing the heat transfer capability of a heat pipe
GB1302363A (en) * 1968-11-01 1973-01-10
FR2335282A1 (en) * 1975-12-18 1977-07-15 Q Dot Corp Finned heat exchanger for refrigerant - has internally cut spiral capillary groove to guide fluid flow
US4220012A (en) * 1976-09-13 1980-09-02 Brister Beryle D Apparatus for freezing a slug of liquid in a section of a large diameter fluid transmission line

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF SPACECRAFT AND ROCKETS, vol. 13, no. 5, mai 1976, pages 288-293, New York, USA *
W[RME, vol. 86, no. 4, août 1980, pages 71-74, Gr{felfing, DE. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239221A1 (en) * 1986-02-25 1987-09-30 Micromeritics Instrument Corporation A temperature controlling apparatus for use with pore volume and surface area analyzers and method for operating the same
USRE33567E (en) * 1986-02-25 1991-04-09 Micromeritics Instrument Corporation Temperature controlling apparatus for use with pore volume and surface area analyzers

Also Published As

Publication number Publication date
FR2512183B1 (en) 1985-01-25
DE3133965C2 (en) 1984-11-08
DE3133965A1 (en) 1983-03-17

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