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
  • F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
• • 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
  • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
  • F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
  • F25D3/06—Movable containers
• • 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
  • F25D23/00—General constructional features
  • F25D23/06—Walls
• • 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
  • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
  • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
  • F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
• • 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

• Such cooling elements are charged by placing the container part including such elements, in some cases the entire container, inside a space where they are exposed to cold , i.e. placed in a cool place so that the water is transformed to ice and another phase changing material congeals, respectively.
• Such a charging procedure results in a defined duration as long as the time necessary for transforming the ice to water/the congealed PCM to liquid phase.
• One object of the invention is to bring about method for producing a simple, inexpensive, mechanically strong and easy to maintain wall, wall arrangement or wall intended to be included in or form panels or walls or spacers for containers, boxes and the like for temperature sensitive goods and arranged to safeguard a reliable temperature control over its entire surface, i.e. the entire volume of the container.
• the new method according to the invention lies in providing a wall device having a thickness being small relatively to its width and height and including two side panes arranged at a distance from each other and at least along its outer edges liquid and gas tight joined to each other in order to form a least one chamber and having a permanently closable filling opening, introducing through said opening into said chamber water or other PTM in liquid phase is filled, wherein in a preferred embodiment where the volume of the chamber is known, a water or liquid volume corresponding to 90% of the chamber volume is introduced. After that a mechanical pressure is allowed to act towards the side panes of the chamber unit, resulting in a reduction of the chamber volume so much that the level of the water or liquid introduced reaches the filling opening, upon which the opening is closed and sealed.
• the chamber volume initially can be completely filled whereupon a pressure is allowed to act the side panes until a water or liquid volume corresponding to 10 % of the total volume is ejected. Finally the opening is closed and sealed. By closing and sealing the opening no air can enter the chamber resulting in that the side panes or at least one of them will be slightly inwardly buckled, said shape remaining as long as the water or liquid temperature remains above the congealing point of the water or liquid. On freezing or congealing a expansion of the volume will occur and the panes enclosing the chamber will pressed outwardly to the position before the inwardly pressing.
• the new wall element presents at least one slightly inwardly buckled side sheet or pane or the like as long as the water or liquid is in liquid shape and that such pane or the like after a phase change has occurred, thanks to the expansion resulting thereof returned to an essentially plane shape, i.e. the shape appearing before the pressing operation.
• Fig.1 schematically shows a section of a wall element according to the invention after it has been filled with water or liquid
• Fig. 2 shows the same section and how a mechanical pressure is acting against it sees and how the filling opening is closed and
• Fig. 3 shows the same section after phase change i.e. the water or liquid has frozen or congealed respectively.
• a wall device according to the invention of the kind shown on the drawing can be adapted to form or be part of a wall of a container, the other walls as well as bottom and lid of which also being similar wall devices.
• the device can also be one of six or more similar devices intended to form below, around and above an object put into a container a cooling cover means. The precise shape thus may vary. In the common case the device will be shaped as a rather thin panel or wall element, which can be detachably or permanently arranged at container or even constitute the very wall of the container.
• the device shown on the drawing essentially includes two oppositely arranged relatively thin sheets or panels 1 and 2 of aluminium, stainless steel, plastic material or the like.
• the sheets or panels are along their edges 3 tightly joined, e.g. by welding or lapping to that a tight joint is formed.
• the edge portions of the sheets or panes normally are slightly bent toward each other so that the major areas thereof will be at a distance from each other and a chamber 4 is created between them.
• At the upper edge of the wall of the device there is a permanently closable opening 5, through which water or other liquid can be introduced.
• the device it is essential to, before introducing water, find out the exact volume of the chamber 4 of the device.
• a volume water or other phase changing liquid corresponding to 90%o of the total chamber volume is then filed into the chamber.
• a pressure force T is made to bias the panes or sheets 1 and 2 of the device so that at least one of them is slightly inwardly buckled . This results in a reduction of the chamber volume and that the water or liquid level will raise so that the chamber is filled all the way to the opening. Keeping the pressure against the sides the opening is closed and sealed. The device is now ready for use.
• water or the like is filled into the chamber volume defined by the sheets or panes 1 and 2 until it is completely filled, the volume filled is subsequently noted.
• a quantity water or liquid corresponding to 10%> of the total volume is ejected, that is a quantity of water or liquid corresponding to the expected volume expansion or freezing or congealing.
• the opening 5 is closed and sealed and the device is ready for use.
• the filled and sealed wall device will as long as the water or the like is in liquid state have slightly inwardly buckled sides.
• an expansion occurs resulting in a return of the walls to their original shape, i.e. their shape before the pressing together.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Making Paper Articles (AREA)
• Refrigerator Housings (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=20279905

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (13)

Family Cites Families (3)

• 2000
  • 2000-05-31 SE SE0002028A patent/SE516196C2/sv not_active IP Right Cessation
• 2001
  • 2001-05-29 AU AU2001262846A patent/AU2001262846A1/en not_active Abandoned
  • 2001-05-29 WO PCT/SE2001/001194 patent/WO2001092129A1/en not_active Application Discontinuation
  • 2001-05-29 EP EP01937079A patent/EP1301416A1/en not_active Withdrawn

Non-Patent Citations (1)

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