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CN1288593A - Cooling device for an infrared detector - Google Patents

Cooling device for an infrared detector Download PDF

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Publication number
CN1288593A
CN1288593A CN99802128A CN99802128A CN1288593A CN 1288593 A CN1288593 A CN 1288593A CN 99802128 A CN99802128 A CN 99802128A CN 99802128 A CN99802128 A CN 99802128A CN 1288593 A CN1288593 A CN 1288593A
Authority
CN
China
Prior art keywords
cooling device
infrared detector
cooler
cooling
temperature
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.)
Pending
Application number
CN99802128A
Other languages
Chinese (zh)
Inventor
安东尼奥·亨德里库斯·玛丽娅·奥尔伯茨
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.)
HOLLANDSE SIGNAALAPPAPATEN BV
Original Assignee
HOLLANDSE SIGNAALAPPAPATEN BV
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 HOLLANDSE SIGNAALAPPAPATEN BV filed Critical HOLLANDSE SIGNAALAPPAPATEN BV
Publication of CN1288593A publication Critical patent/CN1288593A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
    • H01J23/48—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit for linking interaction circuit with coaxial lines; Devices of the coupled helices type
    • 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
    • F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
    • 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
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • 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
    • F25B9/02—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using Joule-Thompson effect; using vortex effect

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Radiation Pyrometers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

The invention relates to a cooling arrangement for cooling an infrared detector. The cooling arrangement functions in an operational mode and a standby mode. In the operational mode, the infrared detector is cooled down to an operational temperature; in the standby mode, the infrared detector is cooled down to a non-operational standby temperature in order to preclude disintegration of the detector elements.

Description

The cooling device that is used for infrared detector
The present invention relates to a kind of cooling device that is used for infrared detector.
Such cooling device for example is used for cooling off the infrared detector that uses in infrared sensor.Transducer can comprise a camera housing that infrared detector is housed.The lens combination that is installed in the camera housing focuses on infrared radiation on the infrared detector.Infrared detector generally comprises the focal plane arrays of a detector element.For concrete purposes, can be the diode element of type mercury-cadmium-tellurium (Hg-Cd-Te) as detector element.This material surpassingly is applicable to LONG WAVE INFRARED scope (8-12 μ m) and medium wave infra-red range (3-5 μ m).In order to guarantee its suitable function, detector array is cooled to 80 Kelvins' temperature at work.For this purpose, utilize the cooling device of the type of narration in claim 1.
Widely used in this context is cold cooling unit, as Stirling cooler.Other cooling devices are Peltier or Jiao Er-Thomson type.In the Peltier cooling device, the certain temperature of Peltier element realization is fallen.By several Peltier elements that are connected in series, can realize much larger than using the possible temperature of individual component to fall.The cooling device of Jiao Er-Thomson type is based on the principle by the expanding gas cooling.
Consider wearing and tearing and energy consumption,, then generally do not advise allowing cooling device connect if do not use transducer.In this case, will throw off cooling device, this makes the temperature of infrared detector be elevated to environment value.Under certain condition, ambient temperature may be elevated to high value, is for example caused by the solar heat that acts on the gamma camera that detector is housed.This usually occurs in wherein, and ambient temperature far surpasses in 50 ℃ the military environment.Yet (Hg-Cd-Te) detector of type appears to bring such problem: because the diffusion effect in detector diode, detector stands under the temperature of room temperature to decompose surpassing.Decomposition rate increases with temperature with being directly proportional.This reduces the validity of detector diode inevitably.This constitutes a problem particularly, because the detector price of these types is high.In addition, this will be shortening to certain degree the useful life of detector array.Therefore known cooling devices has such defective: be not suitable for the purposes in the detector array that seriously shorten its useful life when being exposed to higher temperature.
According to the present invention, the cooling device described in the claim 1 has been eliminated this defective.
Advantage together is that detector array can remain under the receivable backup temperature, and cooling device does not consume too many energy.
In a particular embodiment, cooling device comprises a cooler of comparing with operator scheme with the cooling power work that reduces in standby mode.
An other convenient embodiment narrates in claim 3.In this embodiment, the infrared detection temperature is measured, and is applied to control the adjuster of the power of cooling device.Adjuster the temperature substantially constant remain desired value in the work of being used in and the standby mode.
An other convenient embodiment narrates in claim 6.By the less Peltier element of energising in standby mode than in mode of operation, realize the principle of the novelty of this embodiment of support simply.
Effective embodiment in addition narrates in claim 7,8 and 9.These embodiment realize novel principle by a primary cooler and an application that is used for the auxiliary cooler of standby mode that is used for mode of operation.
Now with reference to following accompanying drawing the present invention is described in further detail, in the accompanying drawings:
Fig. 1 represents to comprise separately Stirling (split-stirling) cooler that is used for being controlled at the adjuster of two kinds of cooling powers in the mode of operation;
Fig. 2 represents to comprise a separately Stirling cooler according to the auxiliary cooler of Jiao Er-thomson principle;
Fig. 3 represents to comprise the peltier cooler of an adjuster.
Fig. 1 represent a kind of according to the present invention, comprise one separately Stirling cooler 1, be applicable to the cooling device in the work of being used in and the standby mode.Separately Stirling cooler comprises that one is connected to a compressor 2 on the condenser 4 through minute open pipe 3.Condenser 4 comprises a displacer and a regenerator, in the drawings not expression.Compressor 2, branch open pipe 3 and condenser 4 constitute a closed system that is filled with the frozen gas such as helium.By means of two pistons 5 and 6, compressor 2 produces time dependent pressure in system.Piston 5 and 6 is activated by the linear motor that it is applied alternating voltage (here expression), and this motor makes two pistons in the opposite direction 7 carry out oscillating movement with the frequency of alternating voltage with the amplitude that depends on the alternating voltage amplitude.This time dependent pressure will produce four continuous Stirling circulations in condenser 4, extract heat from cold side 8 thermotropism sides 9 that is:.As a result, cold side 8 supposition of condenser 4 have 70 to 80 Kelvins' temperature.Condenser 4 can be positioned in the camera housing that provides lens (not expression here).One of detection diode that lens focus on infrared radiation Hg-Cd-Te (mercury-cadmium-tellurium) type watches attentively on the array (staringarray) 10, and array 10 is connected to the cold side of condenser.
The cooling power that is used for cooling device is controlled/is regulated by the amplitude that changes the compressor piston motion.For this purpose, provide an adjuster 11, with activate a generation be used for air compressor motor the amplifier 12 of alternating voltage.Adjuster 11 comprises a selector switch of not representing here, works in mode of operation or standby mode to allow cooling device.In mode of operation, control cooling power like this, thereby the cold side of condenser 4 reaches about 70 to 80 Kelvins' temperature; Temperature in standby mode can be in-20 to 40 degrees centigrade scope, but preferably is no more than 20 degrees centigrade.The cold side 8 of condenser can be equipped with a temperature sensor 13 that is connected on the adjuster 11.Adjuster 11 is adjusted to desired value to cooling power according to temperature survey.
Fig. 2 represents another embodiment according to cooling device of the present invention.Cooling device comprises a primary cooler of realizing as Stirling cooler 2,3,4 separately in to the example of this embodiment; And auxiliary cooler 14 that conduct realizes according to the cooler of Jiao Er-thomson principle work in this example.Through a supply pipeline 15, expanding gas is along watching array 10 inflations attentively.In mode of operation, array 10 is watched in the primary cooler cooling attentively, up to the working temperature that reaches 70 to 80 Kelvins.In standby mode, primary cooler is thrown off, and activates auxiliary cooler 14.The cooling capacity of auxiliary cooler is enough to prevent to watch attentively the decomposition of array 10.
Fig. 3 represents one embodiment of the present of invention, and wherein cooling device comprises one group of Peltier element E 1..., E nEach Peltier element E iRealize that certain temperature falls.That cools off watches the top that array 10 is placed on this group Peltier element attentively.Peltier element is respectively through connecting line A 1..., A nBy means of power supply 16 power supplies.Power supply has mode of operation and standby mode.In mode of operation, to all Peltier element power supplies; In standby mode, only power, although the element of this quantity is enough to remain under the in fact impossible temperature of array decomposition watching array attentively to the Peltier element of limited quantity.Best, only connect the most approaching those Peltier elements of watching array 10 attentively, for example first three element.A side of cooling off can provide a temperature sensor (not expression in the drawings) that is connected on the power supply, and this power supply connects or throw off Peltier element according to temperature sensor measurement.

Claims (9)

1. the cooling device that is used for infrared detector, be used in operator scheme, infrared detector being cooled to be essentially at least work temperature 1, it is characterized in that, also cooling device is designed to be used for infrared detector is cooled to be essentially backup temperature T2 at least in standby mode, wherein T2 is far above T1.
2. cooling device according to claim 1 is characterized in that, described device comprises a cooler of comparing with operator scheme with the cooling power work that reduces in standby mode.
3. cooling device according to claim 2, it is characterized in that described device comprises that the temperature sensor of a temperature that is used for measuring infrared detection device and one are used in work and standby mode response and control the adjuster of cooling power from the signal of temperature sensor.
4. an adjuster is used for being attached to cooling device according to claim 3.
5. cooling device according to claim 3 is characterized in that, cooler is the cooler of Stirling, Jiao Er-Thomson or Peltier type.
6. cooling device according to claim 2 is characterized in that, described device comprises a plurality of Peltier elements that are connected in series, and by powering to less Peltier element in standby mode than in mode of operation, can reduce cooling power effectively.
7. cooling device according to claim 1 is characterized in that, described device comprises that a primary cooler that is used for cooled infrared detector in mode of operation and one are used for the auxiliary cooler of cooled infrared detector in standby mode.
8. cooling device according to claim 7 is characterized in that, auxiliary cooler is Jiao Er-Thomson type.
9. cooling device according to claim 7 is characterized in that, auxiliary cooler comprises a supply pipeline that is used for expanding gas is supplied to infrared detector.
CN99802128A 1998-01-14 1999-01-06 Cooling device for an infrared detector Pending CN1288593A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1008023 1998-01-14
NL1008023A NL1008023C2 (en) 1998-01-14 1998-01-14 Cooling device for an infrared detector.

Publications (1)

Publication Number Publication Date
CN1288593A true CN1288593A (en) 2001-03-21

Family

ID=19766340

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99802128A Pending CN1288593A (en) 1998-01-14 1999-01-06 Cooling device for an infrared detector

Country Status (10)

Country Link
EP (1) EP1048073A1 (en)
JP (1) JP2002510034A (en)
KR (1) KR20010034075A (en)
CN (1) CN1288593A (en)
AU (1) AU749208B2 (en)
IL (1) IL137005A0 (en)
NL (1) NL1008023C2 (en)
TR (1) TR200002053T2 (en)
WO (1) WO1999036960A1 (en)
ZA (1) ZA9811929B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105180506A (en) * 2015-09-02 2015-12-23 中国科学院理化技术研究所 Composite refrigeration system for infrared detector and control method
CN110787728A (en) * 2018-08-02 2020-02-14 Mwt公司 Pressure vessel with high pressure window

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100518380B1 (en) * 2003-05-12 2005-10-04 삼성탈레스 주식회사 Thermal image appratus having power-save funtion
US20100140661A1 (en) * 2007-08-23 2010-06-10 Gebhard Matt Apparatus for converting of infrared radiation into electrical current
CN101929706B (en) * 2009-06-26 2012-11-21 珠海格力电器股份有限公司 Air conditioner and control method thereof
GB2540344A (en) 2015-07-06 2017-01-18 Evontix Ltd Control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361011A (en) * 1981-09-09 1982-11-30 The United States Of America As Represented By The Secretary Of The Army Cryogenic cooling system
US5365746A (en) * 1989-01-23 1994-11-22 Hughes Aircraft Company Cryogenic cooling system for airborne use
JPH0685122A (en) * 1992-09-04 1994-03-25 Fujitsu Ltd Thermoelectric cooling infrared detector
FR2725779B1 (en) * 1994-10-18 1997-01-10 Air Liquide CRYOGENIC DEVICE FOR OPTRONIC AND / OR ELECTRONIC EQUIPMENT AND EQUIPMENT COMPRISING SUCH A DEVICE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105180506A (en) * 2015-09-02 2015-12-23 中国科学院理化技术研究所 Composite refrigeration system for infrared detector and control method
CN105180506B (en) * 2015-09-02 2017-06-16 中国科学院理化技术研究所 Composite refrigeration system for infrared detector and control method
CN110787728A (en) * 2018-08-02 2020-02-14 Mwt公司 Pressure vessel with high pressure window
CN110787728B (en) * 2018-08-02 2023-10-31 Mwt公司 Pressure vessel with high pressure window

Also Published As

Publication number Publication date
IL137005A0 (en) 2001-06-14
EP1048073A1 (en) 2000-11-02
KR20010034075A (en) 2001-04-25
TR200002053T2 (en) 2000-11-21
ZA9811929B (en) 1999-06-30
JP2002510034A (en) 2002-04-02
WO1999036960A1 (en) 1999-07-22
NL1008023C2 (en) 1999-07-15
AU749208B2 (en) 2002-06-20
AU2717199A (en) 1999-08-02

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