US20020088455A1 - Device enabling operatin of portable equipment in a severe environment - Google Patents

Device enabling operatin of portable equipment in a severe environment Download PDF

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Publication number
US20020088455A1
US20020088455A1 US09/996,999 US99699901A US2002088455A1 US 20020088455 A1 US20020088455 A1 US 20020088455A1 US 99699901 A US99699901 A US 99699901A US 2002088455 A1 US2002088455 A1 US 2002088455A1
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US
United States
Prior art keywords
box
elements
equipment
heated
mix
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.)
Abandoned
Application number
US09/996,999
Other languages
English (en)
Inventor
Jean-Philippe Tigneres
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.)
Thales SA
Original Assignee
Thales SA
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 Thales SA filed Critical Thales SA
Assigned to THALES reassignment THALES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TIGNERES, JEAN-PHILIPPE
Publication of US20020088455A1 publication Critical patent/US20020088455A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/028—Control arrangements therefor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0209—Thermal insulation, e.g. for fire protection or for fire containment or for high temperature environments
    • H05K5/021—Thermal insulation, e.g. for fire protection or for fire containment or for high temperature environments specially adapted for data recorders, e.g. for flight recorders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • This invention relates to a device enabling operation of portable equipment in a severe environment.
  • a heating device is used for these elements sensitive to cold.
  • electrical heating devices consume a great deal of energy, so that they are not suitable for portable appliances for which endurance is a very important criterion.
  • Heating devices making use of fuel are also unsuitable due to the many disadvantages of the fuel (dangerous, bulky, difficult to regulate, etc.).
  • Heating devices containing a mix of liquid and salts that can be crystallized under the effect of a shockwave producing an exothermal reaction are also known. Although these devices do not need any energy source to produce heat, they are not suitable for use in a severe environment due to their fragility.
  • the purpose of this invention is a device enabling operation of equipment in a severe environment, particularly of portable electronic equipment, comprising elements for which operation is degraded or impossible at low temperatures (significantly below 0° C.), a device that does not reduce the endurance of equipment or appliances controlled by it, and that is simple, lightweight and inexpensive to make.
  • the device according to the invention comprises a protective box in which the inside surface is coated with a thermal insulation, and which contains at least one pack containing a mix subject to an exothermal crystallization reaction with its device to trigger the reaction under the effect of a shockwave controllable from outside the box, with the elements to be heated placed inside the box.
  • FIGURE is a simplified sectional view of an example embodiment of a device according to the invention.
  • the invention is described below with reference to heating an electrical power supply battery for a portable electronic device, and a compact disk such as a CD-ROM, but obviously it is not restricted to heating these elements (and/or maintaining their normal operating temperature), and it can be used for other types of portable or non-portable elements and/or appliances, either during storage, immediately before use or during use, or even after use.
  • these elements and appliances may include computer peripherals (CD-ROM drive, DVD-ROM drive, diskette drive, “flash” memory readers, etc.), of complete portable appliances (micro-computers, radio telecommunication or GSM sets, measurement instruments, etc.).
  • the device according to the invention uses a heating device previously used for consumer type appliances (baby bottle warmer, dish warmer, massage appliances, etc.).
  • This heating device is in the form of a sealed pack made of a flexible plastic material containing a mix of water and salts with exothermal properties.
  • the mix is in liquid form at normal ambient temperature and it changes to the solid state at a certain negative temperature that depends on the chemical composition of the mix.
  • This solidification value When the temperature to which this mix is subjected exceeds this solidification value, all that is necessary to trigger a chain reaction causing creation of crystals throughout the complete mix is to create a shockwave in the mix.
  • the shockwave acts as a catalyst for the solidification reaction that is exothermal.
  • the released heat is released over a period of 30 min to 2 hours or even more, depending on the composition of the mix and heat losses.
  • the temperature may increase to +50° C.
  • the advantage of this type of “passive” heating device is that it releases heat energy without any energy consumption, and therefore without reducing the endurance of the appliances that it is required to heat in the device according to the invention. The only phase during which this heating device consumes energy is when it is being recharged to liquefy the solidified mix.
  • this phase can be done external to the mission during which the heating device is to be used, in a location (laboratory, deposit, workshop, plant, etc.) in which energy sources with unlimited endurance are available. Obviously, if the mission in question is to last more than about two hours, several heating devices can be provided that will be used in sequence.
  • the elements to be heated in the device according to the invention When the elements to be heated in the device according to the invention have been heated, they can be kept at the required temperature (which is not necessarily their normal operating temperature for an ambient temperature of about 20° C., but which is preferably simply more than 0° C.), by their self-heating and/or self-heating of the equipment of which they form part or in which they are included. However, if this self-heating is insufficient, the device according to the invention can provide additional heat for these elements.
  • the required temperature which is not necessarily their normal operating temperature for an ambient temperature of about 20° C., but which is preferably simply more than 0° C.
  • the dimensions of the box will be selected so that this equipment containing the elements to be heated can also fit into it (for example a CD-ROM drive which is then connected to its microcomputer through an appropriate cable, or a GSM station power supply battery which is then connected to this station through an appropriate cable).
  • this equipment containing the elements to be heated when the ambient temperature is strongly negative, may be slightly modified and connected by a cable (or any other appropriate link) to these elements or a subset of this equipment that receives or contains these elements.
  • the single FIGURE shows a drawing of an example embodiment of the device according to the invention.
  • This device comprises a protective box 1 in which the useful area is coated with a coat 2 of thermal insulation.
  • a flexible reservoir 3 is fixed inside this box containing a mix 4 of the type mentioned above with an exothermal solidification reaction.
  • the reservoir 3 is placed in the box 1 so as to leave the maximum possible amount of space available for the elements to be heated.
  • the reservoir 3 is in the form of a pack coating the inside surface of four consecutive walls of the box 2 (in other words all walls except for the two walls forming the front and the back of the box), the wall forming the front of the box being removable or tipping so that the elements 5 to be heated can be put into the box.
  • these elements are a CD-ROM and a battery, but obviously the device according to the invention could be used to heat many other elements such as those mentioned above.
  • the reservoir 3 is fitted with a shockwave trigger device 6 in which a control handle 7 passes through a wall of the box in a sealed manner and can therefore be manipulated from the outside.
  • This device 6 is usually a metallic dish that can be bent at its centre producing a sudden break.
  • other similar devices may be used.
  • two or more distinct reservoirs with an exothermal mix are placed inside the box 1 , in order to increase the duration of heating by the device according to the invention.
  • the next reservoir is triggered and so on if there are several such reservoirs.
  • each reservoir is provided with its own trigger device.
  • the device according to the invention it is possible to operate several items of electronic equipment at very low ambient temperature ( ⁇ 40° C. or even less) without reducing the endurance of this type of equipment, and in a severe environment (presence of sand, dust, chemical contaminants, blunt objects, infrared and ultraviolet radiation, etc.), due to the fact that the box containing the heating device includes a compartment that can easily be made leak tight and resistant to shocks, radiation and various pollutants.
  • the portable equipment itself must be designed to be at least as strong as the heating device compartment.
  • This heating device contains the quantity of the exothermal reaction mix (possibly in several independent packs used one after the other) necessary to provide sufficient heating for portable equipment even for relatively long missions (several hours) in a very cold environment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Packages (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
US09/996,999 2000-12-01 2001-11-30 Device enabling operatin of portable equipment in a severe environment Abandoned US20020088455A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0015609A FR2817705B1 (fr) 2000-12-01 2000-12-01 Dispositif permettant le fonctionnement de materiels portatifs en environnement severe
FR0015609 2000-12-01

Publications (1)

Publication Number Publication Date
US20020088455A1 true US20020088455A1 (en) 2002-07-11

Family

ID=8857150

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/996,999 Abandoned US20020088455A1 (en) 2000-12-01 2001-11-30 Device enabling operatin of portable equipment in a severe environment

Country Status (2)

Country Link
US (1) US20020088455A1 (fr)
FR (1) FR2817705B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080273296A1 (en) * 2007-05-04 2008-11-06 Chi Mei Communication Systems, Inc. Portable electronic device
DE102010046243A1 (de) * 2010-09-22 2012-03-22 Rawema Countertrade Handelsgesellschaft Mbh Auslöseeinheit
WO2012095337A1 (fr) * 2011-01-12 2012-07-19 Robert Bosch Gmbh Régulation de la température d'une batterie par du matériau à changement d'état d'agrégats

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3006537A1 (fr) * 2013-06-04 2014-12-05 Robin Priouret Protection chauffante de telephone portable

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285559A (en) * 1992-09-10 1994-02-15 Sundstrand Corporation Method and apparatus for isolating electronic boards from shock and thermal environments
US5750925A (en) * 1994-10-05 1998-05-12 Loral Fairchild Corp. Flight crash survivable storage unit with boiler for flight recorder memory
US5791334A (en) * 1996-03-18 1998-08-11 Omni Therm, Inc. Heat pack resistant to saddle-bagging
US6144013A (en) * 1999-07-01 2000-11-07 International Business Machines Corporation Local humidity control system for low temperature electronic module

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080273296A1 (en) * 2007-05-04 2008-11-06 Chi Mei Communication Systems, Inc. Portable electronic device
US7609513B2 (en) * 2007-05-04 2009-10-27 Chi Mei Communication Systems, Inc. Portable electronic device
DE102010046243A1 (de) * 2010-09-22 2012-03-22 Rawema Countertrade Handelsgesellschaft Mbh Auslöseeinheit
WO2012095337A1 (fr) * 2011-01-12 2012-07-19 Robert Bosch Gmbh Régulation de la température d'une batterie par du matériau à changement d'état d'agrégats

Also Published As

Publication number Publication date
FR2817705B1 (fr) 2003-04-11
FR2817705A1 (fr) 2002-06-07

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Legal Events

Date Code Title Description
AS Assignment

Owner name: THALES, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TIGNERES, JEAN-PHILIPPE;REEL/FRAME:012684/0437

Effective date: 20020128

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION