EP0322028B1 - Vorrichtung zur vorübergehenden Unterkühlung eines gekühlten Detektors - Google Patents

Vorrichtung zur vorübergehenden Unterkühlung eines gekühlten Detektors Download PDF

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Publication number
EP0322028B1
EP0322028B1 EP88202855A EP88202855A EP0322028B1 EP 0322028 B1 EP0322028 B1 EP 0322028B1 EP 88202855 A EP88202855 A EP 88202855A EP 88202855 A EP88202855 A EP 88202855A EP 0322028 B1 EP0322028 B1 EP 0322028B1
Authority
EP
European Patent Office
Prior art keywords
cooler
detector
overcooling
temperature
phase
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
Application number
EP88202855A
Other languages
English (en)
French (fr)
Other versions
EP0322028A1 (de
Inventor
Henri Société Civile S.P.I.D. Bourcier
Marc Société Civile S.P.I.D. Pochard
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.)
Koninklijke Philips NV
Original Assignee
SODERN SA
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 SODERN SA, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical SODERN SA
Publication of EP0322028A1 publication Critical patent/EP0322028A1/de
Application granted granted Critical
Publication of EP0322028B1 publication Critical patent/EP0322028B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect

Definitions

  • the invention relates to a method of temporarily super-cooling a detector.
  • the invention also relates to a device for implementing the method.
  • a device of this kind finds an application for example in the sights of stars embarked on vehicles and whose duration of use is of the order of a few seconds.
  • These star finders are equipped with CCD detectors operating in the visible range and cooled to low temperature (0 ° to 5 ° C) in a thermostatically controlled enclosure.
  • Document US-A 4 279 292 discloses a detector cooling device with two coolers in series, connected by a thermally conductive material.
  • CCD components are made up of semiconductor materials, the parameters of which degrade when the detector is struck by a bombardment of particles. It follows that at constant temperature the dark current increases. As this current decreases with temperature, it is necessary to cool further when it has increased in order to restore its value in the absence of nuclear aggression and thus maintain the detector's initial sensitivity.
  • the object of the invention is to provide a device ensuring this super-cooling during the duration of use of the detector without bringing disturbance to the thermal equilibrium of the assembly.
  • the single figure shows a schematic section of the super-cooling device of the invention.
  • the detector 1 is placed inside a housing whose lateral surface 2 is made of a material with low thermal conductivity and whose bottom 3 is a support in contact with the external environment.
  • the part of the housing facing the detector is pierced with an opening closed by a transparent window 4.
  • the detector is for example a matrix CCD.
  • a first cooler 5 is brought into contact with the support 3 while a second cooler 6 is brought into contact with the detector.
  • These two coolers operate for example with the Peltier effect.
  • An enclosure 7 containing a phase change material (solid ⁇ liquid) is interposed between the coolers 5 and 6.
  • This material is chosen as a function of the permanent operating temperature: water for a temperature of 0 ° C., tetradecane for a temperature of 5 ° C.
  • the enclosure contains for example 0.5 g of water.
  • the first cooler 5 provides steady cooling of the detector 1, cooler 6 (out of service) and enclosure 7 assembly containing the phase change material.
  • the second Peltier effect cooler 6 is switched on. service.
  • the thermal energy dissipated by this cooler is absorbed by the transition from the solid state to the liquid state of the phase change material without disturbing the external environment provided that the duration of the super-cooling does not exceed the duration of absorption capacity of the material.
  • Such a device can ensure a super-cooling of 20 ° C for a period of approximately 20 seconds.
  • One of the advantages of this device is to be able to operate as many times as desired, because after the supercooling the part of the material in the liquid state returns to the solid state and the system is ready to operate again .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Radiation (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Claims (4)

  1. Verfahren zur vorübergehenden Unterkühlung eines auf eine Dauerbetriebstemperatur gekühlten Detektors im Dauerbetrieb in einem Raum mittels eines ersten Kühlers, wobei dieser Raum dazu ausserdem zwischen dem ersten Kühler und dem Detektor ein Wärmespeichermittel und einen zweiten Kühler aufweist, wobei das Wärmespeichermittel durch eine Fest-Flüßig-Phasenänderung auf einer Temperatur sehr nahe bei der Dauerbetriebstemperatur funktioniert, wobei der zweite Kühler vorübergehend in Betrieb gesetzt wird zur Erzeugung der erforderlichen Unterkühlung und der teilweisen Verflüssigung des genannten Phasenänderungsmittels, wobei die ebenfalls bei konstanter Temperatur gespeicherte Wärme danach durch den genannten ersten Kühler rückgängig gemacht wird.
  2. Vorrichtung zum Durchführen des Verfahrens zur vorübergehenden Unterkühlung eines gekühlten Detektors im Dauerbetrieb in einem Raum mittels eines ersten Kühlers nach Anspruch l, wobei diese Vorrichtung einen Raum aufweist mit einem mit den Seitenflächen verbundenen Boden sowie mindestens eine Wand mit einem transparenten Fenster, weiterhin einen im Innern des Raumes gegenüber dem genannten Fenster angeordneten Detektor, wobei der erste Kühler mit dem Boden und ein zweiter Kühler mit dem genannten Detektor in Kontakt ist, sowie einen zwischen dem ersten und dem zweiten Kühler vorgesehenen Raum, der ein Wärmespeichermittel aufweist, wobei das genannte Wärmespeichermittel ein Material ist, dessen Phase von fest zu flüssig ändert, das in dem völlig festen, Dauerbetriebszustand zu einer Temperatur ganz nahe bei der Übergangstemperatur neigt, und in dem teilweisen flüssigen Zustand bei vorübergehender Unterkühlung des genannten Detektors zu einer Temperatur entsprechend der Übergangstemperatur neigt.
  3. Vorrichtung zur Unterkühlung nach Anspruch 2, dadurch gekennzeichnet, daß beim genannten ersten und zweiten Kühler der Peltier-Effekt angewandt wird.
  4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das genannte Phasenänderungsmittel Wasser ist, wenn die Dauerbetriebstemperatur 0°C beträgt und Tetradecan, wenn die Dauerbetriebstemperatur 5°C beträgt.
EP88202855A 1987-12-18 1988-12-13 Vorrichtung zur vorübergehenden Unterkühlung eines gekühlten Detektors Expired - Lifetime EP0322028B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8717713 1987-12-18
FR8717713A FR2624956B1 (fr) 1987-12-18 1987-12-18 Dispositif de sur-refroidissement temporaire d'un detecteur refroidi

Publications (2)

Publication Number Publication Date
EP0322028A1 EP0322028A1 (de) 1989-06-28
EP0322028B1 true EP0322028B1 (de) 1992-03-25

Family

ID=9358034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88202855A Expired - Lifetime EP0322028B1 (de) 1987-12-18 1988-12-13 Vorrichtung zur vorübergehenden Unterkühlung eines gekühlten Detektors

Country Status (5)

Country Link
US (1) US4991399A (de)
EP (1) EP0322028B1 (de)
JP (1) JPH01202688A (de)
DE (1) DE3869581D1 (de)
FR (1) FR2624956B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3735593A (en) * 1992-02-26 1993-09-13 Implemed, Inc. Cryogenic probe
RU2034207C1 (ru) * 1992-11-05 1995-04-30 Товарищество с ограниченной ответственностью компании "Либрация" Способ охлаждения объекта каскадной термоэлектрической батареей
US5277030A (en) * 1993-01-22 1994-01-11 Welch Allyn, Inc. Preconditioning stand for cooling probe
US5343368A (en) * 1993-01-22 1994-08-30 Welch Allyn, Inc. Thermally neutral portable power sources
US20060086096A1 (en) * 2004-10-22 2006-04-27 Nanocoolers, Inc. Thermoelectric cooling and/or moderation of transient thermal load using phase change material
GB2543549B (en) * 2015-10-21 2020-04-15 Andor Tech Limited Thermoelectric Heat pump system

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1126426B (de) * 1960-03-08 1962-03-29 Philips Nv Kleinkuehlgeraet mit einer Peltierkuehlanordnung
GB911619A (en) * 1960-10-03 1962-11-28 Licentia Gmbh Improvements in and relating to thermo-electric cooling devices
US3070964A (en) * 1961-06-12 1963-01-01 Gen Electric Method of operating thermoelectric cooling unit
DE1601036A1 (de) * 1967-11-17 1970-06-11 Johann Koettermann Elektrothermische Tiefkuehleinrichtung
US4066365A (en) * 1976-05-28 1978-01-03 The Perkin-Elmer Corporation Temperature control apparatus
US4279292A (en) * 1978-09-29 1981-07-21 The United States Of America As Represented By The Secretary Of The Navy Charge coupled device temperature gradient and moisture regulator
US4253515A (en) * 1978-09-29 1981-03-03 United States Of America As Represented By The Secretary Of The Navy Integrated circuit temperature gradient and moisture regulator
FR2468086A1 (fr) * 1979-10-18 1981-04-30 Moracchioli R Dispositif, panneau et procede destines au chauffage, a la refrigeration, a la climatisation ou au controle de l'humidite d'un habitat industriel ou commercial
JPS5847990A (ja) * 1981-09-17 1983-03-19 Furukawa Electric Co Ltd:The 蓄熱槽
US4375157A (en) * 1981-12-23 1983-03-01 Borg-Warner Corporation Downhole thermoelectric refrigerator
DE3205549A1 (de) * 1982-02-17 1983-08-25 Siemens AG, 1000 Berlin und 8000 München Kuehlvorrichtung
DE3238535A1 (de) * 1982-10-18 1984-04-19 Planer Products Ltd., Sunbury-on-Thames, Middlesex Verfahren und apparat zum gesteuerten kuehlen eines produktes
US4512758A (en) * 1984-04-30 1985-04-23 Beckman Instruments, Inc. Thermoelectric temperature control assembly for centrifuges
DE3528731A1 (de) * 1985-08-08 1986-03-27 Wolfgang 1000 Berlin Wasserthal Thermoelektrische kuehlanlage
US4662180A (en) * 1986-08-27 1987-05-05 Menocal Serafin G Isothermally heatsunk diffusion cloud chamber refrigerator
US4833889A (en) * 1988-06-17 1989-05-30 Microluminetics Thermoelectric refrigeration apparatus

Also Published As

Publication number Publication date
EP0322028A1 (de) 1989-06-28
FR2624956B1 (fr) 1990-06-22
DE3869581D1 (de) 1992-04-30
FR2624956A1 (fr) 1989-06-23
JPH01202688A (ja) 1989-08-15
US4991399A (en) 1991-02-12

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