WO2006117543A1 - Ensemble auto chauffant/refroidissant et recipient - Google Patents

Ensemble auto chauffant/refroidissant et recipient Download PDF

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Publication number
WO2006117543A1
WO2006117543A1 PCT/GB2006/001596 GB2006001596W WO2006117543A1 WO 2006117543 A1 WO2006117543 A1 WO 2006117543A1 GB 2006001596 W GB2006001596 W GB 2006001596W WO 2006117543 A1 WO2006117543 A1 WO 2006117543A1
Authority
WO
WIPO (PCT)
Prior art keywords
reservoir
reactant
actuation
container
separator
Prior art date
Application number
PCT/GB2006/001596
Other languages
English (en)
Inventor
Clive Edmonds
Daniel Godfrey
Alan Maskell
Original Assignee
Uniq Prepared Foods Limited
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 Uniq Prepared Foods Limited filed Critical Uniq Prepared Foods Limited
Publication of WO2006117543A1 publication Critical patent/WO2006117543A1/fr

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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D5/00—Devices using endothermic chemical reactions, e.g. using frigorific mixtures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3484—Packages having self-contained heating means, e.g. heating generated by the reaction of two chemicals
    • 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
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/005—Combined cooling and heating devices

Definitions

  • This invention relates to a heating or cooling assembly suitable for transferring heat to or from material placed in thermal contact with the assembly.
  • the assembly can be part of a container for heating or cooling materials, in particular foodstuffs without need for additional heating or cooling devices, such as gas flames or refrigerators.
  • a stored material e.g. a prepared foodstuff, such as soup or coffee
  • a prepared foodstuff such as soup or coffee
  • WO 02/098761 describes a self heating or self-cooling container which has a sealed can assembled within an outer container.
  • the outer container is divided into two chambers divided by a rupturable membrane. Relative movement of the two chambers of the outer container causes engagement between the rupturable membrane and piercing means, whereby the contents of the two chambers are mixed.
  • This device suffers from the disadvantage that mixing of the two reactants can be incomplete and accordingly the heat generated is not always sufficient to warm up material, e.g. a food or beverage stored in the container.
  • GB 1 385 365 describes a self heating/cooling container in which the temperature of a liquid beverage held in the container has its temperature changed by mixing two components of a heating/cooling couple.
  • the materials are mixed by manual agitation and there is a substantial risk that the reaction of the two components of the couple is incomplete or uncontrolled. Further the transfer of heat to or from the beverage held in the container is not easy to control, and hot/cold spots are likely to develop.
  • US 6 601 576 discloses a bottle warming apparatus for use while travelling. Self heating is brought about by releasing a pellet of, e.g., calcium oxide, into a water jacket surrounding the beverage container and shaking to facilitate reaction and transfer heat to the contents of the apparatus.
  • the apparatus is bulky and the heat transfer cumbersome.
  • US 3 653 372 discloses a chemically heated container in which heat is produced by mixing a liquid chemical reactant held in a frangible capsule with a solid chemical reactant held in a heating chamber.
  • a disadvantage of this apparatus is that the mixing of the two reactants is difficult to control and reaction of the chemical couple is often incomplete. Also, the couple tends to develop hotspots.
  • a heating or cooling assembly suitable for transferring heat to or from material placed in thermal contact with the assembly, comprising a first, solid reactant, reservoir separated by at least one openable separator from a second, liquid reactant, reservoir, the at least one separator being openable on actuation to urge liquid held in the second reservoir through the at least one separator into contact with solid reactant retained in the first reservoir, contact of the liquid reactant with the solid reactant causing a heating or cooling of a heat transfer surface of the first reservoir.
  • the liquid reactant is urged into contact with solid reactant retained substantially throughout the first reservoir.
  • This may be achieve by having one or more channels or conduits in the first reservoir, in fluid communication with the at least one separator which dispense the liquid throughout the solid when the assembly is actuated.
  • the solid is retained in the first reservoir in a plurality of pockets, each pocket being in fluid communication, on actuation of the assembly, with the second reservoir.
  • the plurality of pockets are, on actuation of the assembly, adapted to communicate with one another.
  • the plurality of pockets to be uniformly spaced over the heat transfer surface of the first reservoir.
  • the first reactant is a solid, e.g. potassium permanganate or calcium oxide
  • the solid reactant preferably in powder form, may be. packaged in paper mesh pockets or packets which are regularly spaced within the overall envelope of the first reservoir!
  • the pocket material should have a sufficiently large mesh size to allow easy penetration of the second reactant, when it is urged into the first reservoir, but be sufficiently small to • retain particles of first reactant.
  • a suitable material for the pockets is wide meshed paper material known as tea bag scrim.
  • the pockets are uniformly disposed across the entire surface of the first reservoir in order to make close thermal contact with the outer surface of the stored material.
  • the assembly may be used for heating or cooling as desired.
  • the solid component of cooling couples include ammonium nitrate, ammonium chloride or sodium thiosulphate.
  • Reactants which raise the temperature include calcium oxide and water.
  • the solid reactant and the liquid reactant together to be an oxidising couple.
  • the solid reactant to be potassium permanganate and the liquid reactant to be a substance exothermically oxidised by potassium permanganate, e.g. glycerol.
  • the glycerol should be diluted with a non-oxidisable liquid, e.g. water.
  • An alternative to potassium permanganate as an oxidising agent is potassium dichromate.
  • the openable separator is a membrane which bursts under pressure.
  • the membrane may be burst by gradual application of a bursting force.
  • the membrane may be burst by twisting the second reservoir relative to the first reservoir.
  • the membrane may also be burst by the gradual application of a compressive force on the second reservoir.
  • a container for raising or lowering the temperature of a material stored in thermal contact therewith comprising a container body provided with interior walls defining a cavity adapted to receive said material, a heating or cooling assembly suitable for transferring heat to or from material placed in thermal contact with the container, a first, solid reactant, reservoir separated by at least one openable separator from a second, liquid reactant, reservoir, the at least one separator being openable on actuation to permit liquid held in the second reservoir to be urged through the at least one separator into contact with solid reactant retained in the first reservoir, the container being provided with actuation means adapted on actuation to reduce the volume of the second reservoir such that the separator opens and liquid reactant held in the second reservoir is urged into the first reservoir, contact of the liquid reactant with the solid reactant causing a heating or cooling of a heat transfer surface of the first reservoir.
  • the container may be any shape which is convenient for holding a stored material to be heated or cooled.
  • the container body is cylindrical.
  • the openable separator may be opened by a variety of methods, e.g. by interaction with a piercing means.
  • the openable separator separating the first and second reservoirs is a membrane which bursts under pressure.
  • the second reservoir is compressed gradually on actuation of the actuation means. This permits gradual but complete mixing of the two reactants and makes the efficacy of the container more reliable.
  • the first reservoir should be in close thermal contact with the stored material.
  • the first reservoir may be located between the interior walls of the container body and the stored material.
  • the first reservoir may be located on the outer surface of the inner walls.
  • the container body has inner and outer walls and the first reservoir is located between the inner and outer walls.
  • the main structural components of the container may be manufactured from thermoplastics materials adapted to remain rigid at the operating temperature of the reaction of the two reactants. For a permanganate/glycerol couple such materials should remain rigid and keep their strength up to about 130°C.
  • the first and second reservoirs may be made from a flexible thermoplastic.
  • Figure 1 is a perspective view of a container according to the invention in partial section;
  • Figure 2 is a perspective view of a heating or cooling assembly according to the invention in a container according to the invention, the overall position of the container being shown in outline.
  • Figure 3 is a side view of a heating or cooling assembly according to the invention.
  • a container (1) for selectably changing the temperature of a stored material by mixing two reactants comprises a generally cylindrical container body (2) provided with interior (3a) and exterior (3b) concentric walls.
  • the interior wall (3a) defines a cavity (4) adapted to receive a stored material (5), such as a foodstuff.
  • the lower end portion of the container body (2) has a snug fit engagement in a cylindrical support collar (6).
  • the first solid reactant reservoir (7) is located in the annular space between the interior and exterior walls (3a) and (3b) respectively of the container body (2).
  • the distance between the first solid reactant reservoir (7) and the stored material (5), is relatively small, such that there is good thermal contact with the stored material (5).
  • the first reactant e.g. in powder form, is stored in a plurality of pockets (14) uniformly disposed within the envelope of the first solid reactant reservoir (7).
  • the liquid reactant second reservoir (8) occupies a space with the support collar (6) and below the container body (2).
  • the lower portion of the support collar (6) defining this space is provided with a plurality, e.g. three, of spiral grooves (10) about the long axis, indicated by the line X-X' of the container (I) 5 which are adapted to cooperate with pins (11) equally spaced around the upper end portion of a cylindrical handle (12).
  • the pins (11) extend towards the long axis of the container (1) and support a disc (13) carried within the lower portion of the support collar (6).
  • the bottom of the second reactant reservoir (8) rests on and is supported by the disc (13).
  • Flow may be facilitated by vacuum packing the solid reactant into the solid reactant reservoir (T).
  • This has the advantage that the expansion or "ballooning" of the solid reactant reservoir (7) is limited on actuation.
  • the port (not shown) for vacuum packing the solid reactant reservoir (7) can also function as a safety valve in the event that there is a build up of pressure in the solid reactant reservoir (7) on actuation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)

Abstract

L'invention concerne un ensemble chauffant ou refroidissant adapté au transfert de chaleur vers ou à partir d'un matériau en contact thermique avec ledit ensemble, comprenant un premier réservoir (7) pour réactif solide, séparé par au moins un séparateur ouvrable (9) d'un deuxième réservoir (8) pour réactif liquide. Le(s) séparateur(s) (9) est (sont) ouvrable(s) par actionnement pour forcer le liquide contenu dans le second réservoir (8) à passer le(s) séparateur(s) (9) pour entrer en contact avec le réactif solide contenu dans le premier réservoir (7). Le contact entre le réactif liquide et le réactif solide provoque un réchauffement ou un refroidissement d'une surface de transfert de chaleur du premier réservoir. Typiquement, le premier réactif est du permanganate de potassium et le second réactif est une solution de glycérol.
PCT/GB2006/001596 2005-04-29 2006-05-02 Ensemble auto chauffant/refroidissant et recipient WO2006117543A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0508696A GB0508696D0 (en) 2005-04-29 2005-04-29 Containers for selectably changing the temprature of a stored material by mixing two reactants
GB0508696.2 2005-04-29

Publications (1)

Publication Number Publication Date
WO2006117543A1 true WO2006117543A1 (fr) 2006-11-09

Family

ID=34674034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/001596 WO2006117543A1 (fr) 2005-04-29 2006-05-02 Ensemble auto chauffant/refroidissant et recipient

Country Status (2)

Country Link
GB (1) GB0508696D0 (fr)
WO (1) WO2006117543A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9175876B2 (en) 2009-03-09 2015-11-03 Heat Wave Technologies, Llc Self-heating systems and methods for rapidly heating a comestible substance
US9598186B2 (en) 2009-03-09 2017-03-21 Heat Wave Technologies, Llc Self-heating systems and methods for rapidly heating a comestible substance
US9603483B2 (en) 2007-09-26 2017-03-28 Heat Wave Technologies, Llc Self-heating systems and methods for rapidly heating a comestible substance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1385365A (en) * 1972-04-25 1975-02-26 Readi Temp Heat transfer unit
FR2666311A1 (fr) * 1990-09-04 1992-03-06 Allaire Patrick Melangeur auto-chauffant pour preparer une boisson chaude.
WO2002098761A1 (fr) * 2001-06-04 2002-12-12 Thermotic Developments Limited Contenants auto-chauffant ou auto-refroidissant
WO2003096855A2 (fr) * 2002-05-17 2003-11-27 Crown Packaging Technology, Inc. Contenant auto-refroidissant ou auto-chauffant
US20040206346A1 (en) * 2001-08-16 2004-10-21 Mordehay Tenenboum Disposable self-heating container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1385365A (en) * 1972-04-25 1975-02-26 Readi Temp Heat transfer unit
FR2666311A1 (fr) * 1990-09-04 1992-03-06 Allaire Patrick Melangeur auto-chauffant pour preparer une boisson chaude.
WO2002098761A1 (fr) * 2001-06-04 2002-12-12 Thermotic Developments Limited Contenants auto-chauffant ou auto-refroidissant
US20040206346A1 (en) * 2001-08-16 2004-10-21 Mordehay Tenenboum Disposable self-heating container
WO2003096855A2 (fr) * 2002-05-17 2003-11-27 Crown Packaging Technology, Inc. Contenant auto-refroidissant ou auto-chauffant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9603483B2 (en) 2007-09-26 2017-03-28 Heat Wave Technologies, Llc Self-heating systems and methods for rapidly heating a comestible substance
US9175876B2 (en) 2009-03-09 2015-11-03 Heat Wave Technologies, Llc Self-heating systems and methods for rapidly heating a comestible substance
US9598186B2 (en) 2009-03-09 2017-03-21 Heat Wave Technologies, Llc Self-heating systems and methods for rapidly heating a comestible substance

Also Published As

Publication number Publication date
GB0508696D0 (en) 2005-06-08

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