EP0225138A1 - Heat conducting device - Google Patents

Heat conducting device Download PDF

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Publication number
EP0225138A1
EP0225138A1 EP86309112A EP86309112A EP0225138A1 EP 0225138 A1 EP0225138 A1 EP 0225138A1 EP 86309112 A EP86309112 A EP 86309112A EP 86309112 A EP86309112 A EP 86309112A EP 0225138 A1 EP0225138 A1 EP 0225138A1
Authority
EP
European Patent Office
Prior art keywords
cold
finger
heat
members
heat conducting
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.)
Withdrawn
Application number
EP86309112A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kenneth J. BRITISH AEROSPACE P. L. C. Lane
Michael J. BRITISH AEROSPACE P. L. C. Baker
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.)
BAE Systems PLC
Original Assignee
British Aerospace PLC
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 British Aerospace PLC filed Critical British Aerospace PLC
Publication of EP0225138A1 publication Critical patent/EP0225138A1/en
Withdrawn legal-status Critical Current

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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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
    • F25D19/006—Thermal coupling structure or interface

Definitions

  • This invention relates to a device for conducting heat from one to another of two members between which the spacing may vary, for example, because of tolerances in manufacture of the apparatus comprising the two members and conducting assembly and/or because of relative movement of the two members during operation of the apparatus. More particularly, but not exclusively, the invention is concerned with heat conduction at very low temperatures in cryogenic apparatus, for example a Stirling-cycle cooling engine.
  • Stirling-cycle cooling engines have potential benefits in the field of aerospace for cooling optical sensor components especially infra-red sensor components down to the very low temperatures at which they operate best.
  • a relevant part is the device by which heat is conducted from the substrate or substrate support member of the optical sensor component which is to be cooled to the cold end of the Stirling-cycle engine cold finger (the cold finger is the element, usually elongate, within which the working fluid displacer moves and along which heat is transferred to cool one end and warm the other).
  • the distance between the component and the cold finger may vary due to manufacturing tolerances from one to another engine unit, or it may vary with time within the same unit due say to expansion and contraction. Meanwhile highly efficient transfer between the two elements must be guaranteed. It has been proposed to fit between the component and cold finger a pad made of wire wool, somewhat like a small household scouring pad but of course made of material with high heat conductivity.
  • the object of this invention is to provide a heat conducting device for use in the described situation which gives efficient transfer of heat without requiring any post-production adjustment. Accordingly, we provide between two members between which heat is to be transferred one or more resilient strips each made up of a plurality of thin laminae of thermally conductive metal, for example copper and the laminae being joined together at two spaced positions at which they are also fixed to respective ones of the members.
  • the fixing of the laminae together and to the members may be by vacuum brazing.
  • the or each strip is U-shaped, the two fixing position being at the ends of the limbs of the U-shape.
  • the engine comprises a cold-finger 2, namely a hollow elongate cylinder containing a working fluid such as helium and a displacer (not shown) which is reciprocated within the cylinder while at the same time pressure variations are engendered within the working fluid, say by a separate piston and cylinder arrangement (not shown).
  • a working fluid such as helium
  • a displacer (not shown) which is reciprocated within the cylinder while at the same time pressure variations are engendered within the working fluid, say by a separate piston and cylinder arrangement (not shown).
  • a separate piston and cylinder arrangement not shown.
  • heat is drawn away from the illustrated cold end of the cold finger.
  • the theory of Stirling-cycle cooling engines is well-known - further information about design and operation can be found in many publications.
  • a gold-plated member 1 which is intended to support an infra-red sensitive transducer component (not shown). The component is to be cooled down to the very low temperature a few degrees Kelvin say, at which
  • Insulation is provided by a Dewar flask enclosure (not shown).
  • the items 1 and 2 are fixed to respective support elements (not shown) such that the spacing between the two may vary from one engine to another and /or, with time, in the same engine (due to expansion and contraction with temperature for example).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Radiation Pyrometers (AREA)
EP86309112A 1985-11-20 1986-11-20 Heat conducting device Withdrawn EP0225138A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08528558A GB2183810A (en) 1985-11-20 1985-11-20 Heat transfer device
GB8528558 1985-11-20

Publications (1)

Publication Number Publication Date
EP0225138A1 true EP0225138A1 (en) 1987-06-10

Family

ID=10588496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86309112A Withdrawn EP0225138A1 (en) 1985-11-20 1986-11-20 Heat conducting device

Country Status (4)

Country Link
EP (1) EP0225138A1 (enExample)
JP (1) JPH0633313Y2 (enExample)
DE (1) DE8630980U1 (enExample)
GB (1) GB2183810A (enExample)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609992A (en) * 1969-06-21 1971-10-05 Philips Corp Hermetically sealed box for maintaining a semiconductor radiation detector at a very low temperature
US3851173A (en) * 1973-06-25 1974-11-26 Texas Instruments Inc Thermal energy receiver
US3999403A (en) * 1974-12-06 1976-12-28 Texas Instruments Incorporated Thermal interface for cryogen coolers
US4194119A (en) * 1977-11-30 1980-03-18 Ford Motor Company Self-adjusting cryogenic thermal interface assembly
US4365982A (en) * 1981-12-30 1982-12-28 The United States Of America As Represented By The Secretary Of The Army Cryogenic refrigerator
EP0127109A2 (en) * 1983-05-24 1984-12-05 Honeywell Inc. Infrared energy receiver
EP0139335A2 (en) * 1983-10-19 1985-05-02 Koninklijke Philips Electronics N.V. Infrared receiver having a cooled radiation detector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1375434A (enExample) * 1971-01-28 1974-11-27
JPS5345976A (en) * 1976-10-07 1978-04-25 Fujitsu Ltd Cooler of semiconductor device
JPS5955296U (ja) * 1982-10-05 1984-04-11 株式会社日本アルミ 熱交換器
JPS59103437U (ja) * 1982-12-28 1984-07-12 日本電子株式会社 材料移動機構

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609992A (en) * 1969-06-21 1971-10-05 Philips Corp Hermetically sealed box for maintaining a semiconductor radiation detector at a very low temperature
US3851173A (en) * 1973-06-25 1974-11-26 Texas Instruments Inc Thermal energy receiver
US3999403A (en) * 1974-12-06 1976-12-28 Texas Instruments Incorporated Thermal interface for cryogen coolers
US4194119A (en) * 1977-11-30 1980-03-18 Ford Motor Company Self-adjusting cryogenic thermal interface assembly
US4365982A (en) * 1981-12-30 1982-12-28 The United States Of America As Represented By The Secretary Of The Army Cryogenic refrigerator
EP0127109A2 (en) * 1983-05-24 1984-12-05 Honeywell Inc. Infrared energy receiver
EP0139335A2 (en) * 1983-10-19 1985-05-02 Koninklijke Philips Electronics N.V. Infrared receiver having a cooled radiation detector

Also Published As

Publication number Publication date
JPH0633313Y2 (ja) 1994-08-31
GB2183810A (en) 1987-06-10
GB8528558D0 (en) 1985-12-24
DE8630980U1 (de) 1987-01-22
JPS62147893U (enExample) 1987-09-18

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19861127

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19871211

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LANE, KENNETH J.BRITISH AEROSPACE P. L. C.

Inventor name: BAKER, MICHAEL J.BRITISH AEROSPACE P. L. C.