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WO2012049673A3 - Regulated joule thompson cooling system with an active closed control loop for increasing reliability and preventing instantaneous overheating - Google Patents

Regulated joule thompson cooling system with an active closed control loop for increasing reliability and preventing instantaneous overheating Download PDF

Info

Publication number
WO2012049673A3
WO2012049673A3 PCT/IL2011/000786 IL2011000786W WO2012049673A3 WO 2012049673 A3 WO2012049673 A3 WO 2012049673A3 IL 2011000786 W IL2011000786 W IL 2011000786W WO 2012049673 A3 WO2012049673 A3 WO 2012049673A3
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
sensor
temperature
regulated
cooling system
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.)
Ceased
Application number
PCT/IL2011/000786
Other languages
French (fr)
Other versions
WO2012049673A2 (en
Inventor
Dov Tibi
Mordechai Simchon
Tamir Meir
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.)
Rafael Advanced Defense Systems Ltd
Original Assignee
Rafael Advanced Defense Systems Ltd
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 Rafael Advanced Defense Systems Ltd filed Critical Rafael Advanced Defense Systems Ltd
Publication of WO2012049673A2 publication Critical patent/WO2012049673A2/en
Publication of WO2012049673A3 publication Critical patent/WO2012049673A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

A cryogenic Joule Thompson system for cooling an IR sensor, which includes: a valve at an orifice location to discharge refrigerant gas through; a bellows containing gas, said bellows is thermally coupled to a sensor to cause expansion or contraction of the bellows depending on the sensor temperature; and a displacement rod, one end of which is rigidly connected to the bellows and the other end of which is connected to said valve; wherein the system further includes: a resistor which is thermally coupled to said bellows; a temperature measuring element for measuring the temperature of said IR sensor, and providing the temperature measurements to a processor; a processor for receiving said temperature measurements, for detecting a state of sensor temperature increase after a period of said orifice closure or low refrigerant discharge rate below a predefined value, and for activating a current flow through said resistor.
PCT/IL2011/000786 2010-10-11 2011-10-06 Regulated joule thompson cooling system which comprises an active closed control loop for increasing reliability and preventing instantaneous overheating Ceased WO2012049673A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL208627 2010-10-11
IL208627A IL208627A0 (en) 2010-10-11 2010-10-11 Regulated joule thompson cooling system which comprises an active closed control loop for increasing reliability and preventing instantaneous overheating

Publications (2)

Publication Number Publication Date
WO2012049673A2 WO2012049673A2 (en) 2012-04-19
WO2012049673A3 true WO2012049673A3 (en) 2012-07-12

Family

ID=43570268

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2011/000786 Ceased WO2012049673A2 (en) 2010-10-11 2011-10-06 Regulated joule thompson cooling system which comprises an active closed control loop for increasing reliability and preventing instantaneous overheating

Country Status (2)

Country Link
IL (1) IL208627A0 (en)
WO (1) WO2012049673A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10072877B2 (en) 2014-09-18 2018-09-11 Diehl Defence Gmbh & Co. Kg Cooling device
EP3002569B1 (en) * 2014-09-18 2017-06-07 Diehl Defence GmbH & Co. KG Cooling device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860169A (en) * 1973-11-07 1975-01-14 Powers Regulators Company Ambient temperature control system
US4096993A (en) * 1977-01-21 1978-06-27 Emerson Electric Co. Compensated control valve
EP0582817B1 (en) * 1992-08-13 1996-10-02 BODENSEEWERK GERÄTETECHNIK GmbH Refrigeration system for cooling down an object to low temperatures by a Joule Thomson cooler
EP0747644A2 (en) * 1995-06-06 1996-12-11 Hughes Missile Systems Company Joule-Thomson cryostat
US6016659A (en) * 1997-10-30 2000-01-25 Raytheon Co. Reactive thermo elastic cryostat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860169A (en) * 1973-11-07 1975-01-14 Powers Regulators Company Ambient temperature control system
US4096993A (en) * 1977-01-21 1978-06-27 Emerson Electric Co. Compensated control valve
EP0582817B1 (en) * 1992-08-13 1996-10-02 BODENSEEWERK GERÄTETECHNIK GmbH Refrigeration system for cooling down an object to low temperatures by a Joule Thomson cooler
EP0747644A2 (en) * 1995-06-06 1996-12-11 Hughes Missile Systems Company Joule-Thomson cryostat
US6016659A (en) * 1997-10-30 2000-01-25 Raytheon Co. Reactive thermo elastic cryostat

Also Published As

Publication number Publication date
WO2012049673A2 (en) 2012-04-19
IL208627A0 (en) 2010-12-30

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