WO2006032743A1 - Emballage auto-refrigerant - Google Patents
Emballage auto-refrigerant Download PDFInfo
- Publication number
- WO2006032743A1 WO2006032743A1 PCT/FR2005/002150 FR2005002150W WO2006032743A1 WO 2006032743 A1 WO2006032743 A1 WO 2006032743A1 FR 2005002150 W FR2005002150 W FR 2005002150W WO 2006032743 A1 WO2006032743 A1 WO 2006032743A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- cavity
- adsorbent
- self
- cooling package
- Prior art date
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
- F25D31/00—Other cooling or freezing apparatus
- F25D31/006—Other cooling or freezing apparatus specially adapted for cooling receptacles, e.g. tanks
- F25D31/007—Bottles or cans
-
- 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
- F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
- F25B17/08—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type the absorbent or adsorbent being a solid, e.g. salt
-
- 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
- F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
- F25D2331/80—Type of cooled receptacles
- F25D2331/805—Cans
-
- 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
- F25D2500/00—Problems to be solved
- F25D2500/02—Geometry problems
Definitions
- the present invention relates to a package for cooling its contents by a method of evaporation and adsorption.
- the invention applies to the cooling of edible products such as beverages, ice creams, but also to inedible products such as pharmaceuticals or cosmetics.
- the implementation of the method of cooling by evaporation and adsorption is known and has been the subject of much research in the prior art.
- the principle of such a cooling method is to evaporate a liquid, said coolant, under the effect of a depression maintained by pumping the vapors of said liquid.
- Pumping can be provided by an adsorbent, generally desiccants, adapted to fix the vapors of the coolant.
- Numerous devices have been proposed, associating a heat exchanger containing a liquid to be evaporated with a reservoir containing an adsorbent, in particular for applications to self-cooling beverage packages.
- WO 01/11297 discloses a self-cooling beverage package comprising a heat exchanger immersed in a beverage can assembled by a box skirt containing an adsorbent composed of desiccants in the form of granules.
- the communication between the heat exchanger and the desiccant box is activated by a descrambler to allow the implementation of evaporative cooling adsorption of the vapors of the coolant contained in the exchanger.
- This document describes the method of manufacturing such a self-refreshing beverage package and in particular the steps of assembling the various elements constituting the package.
- the desiccant tank used in this document is a 0.16 mm thick triple-stamped container for accommodating heat traps in stamped fingers. The assembly (desiccant tank and heat traps) is then placed in a cylindrical box assembled to the drink box (a can).
- the box containing the adsorbent is not optimized.
- the desiccant tank is a part designed specifically for this package requiring a particular manufacturing operation stamping. The tank must then be assembled with the heat traps in the box.
- the box containing the adsorbent requires a set of complex and expensive manufacturing steps.
- the step of assembling the box containing the desiccants with the can containing heat exchanger T is particularly delicate because it is essential to maintain a high vacuum in the desiccant tank and the sealing of uncapping to ensure the efficiency of the adsorption evaporation reaction.
- the need to maintain a high vacuum in the desiccant reservoir imposes significant constraints on the reservoir, particularly as to the choice of its shape and the thickness of its walls, to avoid a crushing of the reservoir under the effect of pressure outside atmospheric.
- the present invention proposes to dispose the adsorbent in a container having a thin wall thickness to limit thermal conduction.
- the invention thus proposes to use a container available in large quantities, inexpensive and simple form.
- the present invention aims to use cans, such as conventional beverage cans, to contain the adsorbent.
- Such containers are available in number on the market for a moderate price.
- the invention more particularly relates to a self-cooling package comprising:
- a first cavity containing a product to be refrigerated a product to be refrigerated
- a second cavity forming a heat exchanger and containing a refrigerant liquid adapted to evaporate under the effect of a depression
- a third cavity containing an adsorbent adapted to fix the vapors of the coolant
- a container adapted to receive at least the third cavity, at least a portion of the walls of the container having a thickness less than 0.15 mm.
- the self-cooling package according to the invention can comprise one or more of the following characteristics:
- the walls of the container has a thickness of between 0.08 and 0.1 mm; the container has moldings;
- the adsorbent is shaped as a rigid block so as to maintain the walls of the container;
- the moldings are formed in a portion of side walls extending beyond the adsorbent block; the container further contains at least a portion of the second cavity;
- the container further contains at least a part of the first cavity
- the container is cylindrical; 23038PC
- the container is constituted by a can or a portion of a can
- the container is made of steel
- the second cavity has a wall common with the third cavity, the edges of said common wall being fixed to the container;
- the second cavity has a wall common with the first cavity, the edges of said common wall being fixed to the container;
- the first cavity is remote from the adsorbent by an extension of the side walls of the container beyond the adsorbent;
- the second cavity is removed from the adsorbent by an extension of the side walls of the container beyond the adsorbent.
- the invention also covers the use of such a self-cooling package for a cosmetic product contained in the first cavity of the package and / or for a frozen product contained in the first cavity of the package.
- FIG. 3 a diagram of a self-cooling package according to a third embodiment of the invention.
- the self-cooling package comprises a first cavity containing a product to be refrigerated, a second cavity forming a heat exchanger and a third cavity containing an adsorbent.
- the heat exchanger contains a coolant liquid adapted to evaporate under the effect of a vacuum and the adsorbent is adapted to fix the vapors of the coolant.
- the package further comprises a container adapted to receive at least the third cavity, at least a portion of the walls of the container having a thickness less than 0.15 mm.
- the packaging according to the invention uses a thin container, inexpensive and easy to manufacture, to arrange the adsorbent.
- the manufacture of the packaging is thus simplified and its cost reduced.
- the fineness of the wall of the adsorbent container also reduces the thermal bridge to the cooled product by limiting thermal leakage along the walls of the container.
- the self-cooling package according to the invention comprises a first cavity 10 containing a consumer product to be cooled, such as a beverage, an ice cream or a cosmetic cream to be applied.
- a consumer product to be cooled such as a beverage, an ice cream or a cosmetic cream to be applied.
- the package also comprises a second cavity 20 forming a heat exchanger and containing a cooling liquid whose evaporation produces cooling.
- the second cavity 20 contains the coolant and its vapors.
- the pressure in the second cavity before the onset of the evaporation reaction is about 30 mbar at 23 ° C.
- the first 10 and the second 20 cavities have a common wall 15 which constitutes a heat exchanger. The cold created in the second cavity 20 by the evaporation of the cooling liquid can be transmitted to the product contained in the first cavity 10 by this common wall 15.
- the package also comprises a third cavity 30 containing pumping means for adsorbing the vapor of the refrigerant liquid from the second cavity 20.
- the third cavity under vacuum, contains an adsorbent 31 placed in a container 40.
- This container 40 thus receives at least the third cavity 30 of the package.
- the container 40 has a bottom 42 and side walls 41.
- the container 40 illustrated in the figures is cylindrical. At least a portion of the walls 41 of the container 40 has a thickness less than 0.15 mm. In particular, at least a portion of the walls of the container may have a thickness of between 0.08 and 0.1 mm.
- a can or portion of a can, a conventional beverage can type can be used as a container 40.
- the conventional cans may be steel or aluminum.
- the side walls generally have a thickness of about 0.08 mm with a thickness of about 0.12 mm at the top and bottom.
- the bottom of the can usually has a thickness of about 0.23 mm.
- Such a conventional bobbin can not withstand a vacuum pushed inside without crashing under the effect of atmospheric pressure. Indeed, a bobbin has good mechanical strength only when it is subjected to an overpressure inside. Such overpressure is generally provided by the drink contained in the can, which can be crushed effortlessly by hand once the drink consumed.
- the third cavity 30 is assembled and closed under vacuum, with a vacuum of less than 1 mbar and preferably less than 0.1 mbar.
- the cooling reaction is initiated by a depression when the heat exchanger (the second cavity) is placed in communication with a zone of greater depression (the third cavity). This cooling reaction is then maintained by pumping the vapors of the coolant liquid through the adsorbent, from the second cavity 20 to the third cavity 30.
- the adsorbent is shaped as a rigid block.
- Such a block may be shaped with cells forming conduits for supplying the adsorbent with 23038PC
- a zeolite powder may be mixed with a binder and water to form a thick slurry that can be shaped into a cell-provided block.
- the shaping of the adsorbent block with its cells can be carried out by injection molding and pressing or by extrusion, for example.
- the conformation of the rigid block adsorbent is described in applicant's patent application EP-A-I 297287.
- the adsorbent thus shaped ensures the maintenance of the walls of the container at the external atmospheric pressure.
- Such a conformation of the adsorbent does not remove any of its adsorption capacities, in particular thanks to the cells formed in the block, and makes it possible to maintain the walls of the container 40. Indeed, the force exerted by the pressure
- the outer atmosphere on the walls of the container 40 is compensated by a reaction force provided by the adsorbent block on which the walls can bear.
- moldings 43 are formed in the side walls 41 of the container 40.
- the term "molding" means a structuring of the wall giving it an increased apparent thickness.
- the structuring may consist of undulations, for example.
- the moldings 43 make it possible to reinforce the vacuum strength of the side walls of the container 40 when the adsorbent disposed in the third cavity is not rigid, for example in the form of granules.
- the cooling reaction is triggered by the communication of the second and third cavities.
- the triggering means may comprise a non-return valve 44 closing an opening in a wall common to the second and third cavities. This valve 44 has the particularity of being able to open only towards the outside of the third cavity 30 by the action of a force exerted on the side of the third cavity 30.
- the non-return valve 44 can be actuated by a push rod 45 transmitting a displacement of at least a portion of the bottom 44 of the container 40, the bottom being opposite the wall 25 comprising the communication means.
- Such triggering means are described in patent application WO 03/073019 of the applicant.
- Such triggering means are easily actuated because the third cavity 30 is under vacuum.
- a low pressure exerted on the bottom 42 of the container 40 can therefore easily cause inward deformation, particularly if the bottom is structured convex dome.
- the amount of heat driven by a material depends on its thermal conductivity and section.
- a container made of steel rather than aluminum will preferably be chosen, the steel having a thermal conductivity four to five times lower than that of aluminum.
- the side walls 41 of the container 40 may extend beyond the adsorbent block 31.
- the container 40 may then contain, in addition to the third cavity 30, at least a portion of the second cavity And also at least a portion of the first cavity 10.
- a container 40 with sidewalls having a thickness of less than 0.15 mm makes it possible to limit heat transfer from the third cavity 30 to the first 10 and second cavities by the lateral walls 41.
- the packaging according to the invention has assembly facilities. Several assembly methods will be described by way of example.
- the container 40 contains a large part of the first cavity 10 and all of the second 20 and third 30 cavities.
- the cavities 10, 20, 30 of the package constitute compartments of a single box 40, for example a can portion, of the standard beverage can type.
- a separating lid 25 between the second and third cavities is introduced into the container 40 and fixed by gluing or stirring on the inner walls of the container 40.
- a bowl 15 serving as a receptacle for the product to be cooled constitutes the common wall of the first 10 and second 20 cavities.
- This bowl 15, forming the heat exchanger is introduced into the container and crimped onto the edge of the side walls 41 of the container 40, after the coolant has been introduced into the second cavity 20.
- the bowl 15 could as well be fixed by bonding or soldering to the walls 41 of the container 40.
- the bowl 15 may contain, for example, a cosmetic cream to be cooled before application. It cooperates with a cover 5 which can be clipped for example.
- the first cavity 10 containing the product to be cooled can be moved away from the adsorbent block so as to reduce the thermal bridge between the adsorbent and the cooled product.
- the second cavity 20 forming the heat exchanger can be moved away from the adsorbent block 31.
- the adsorbent 31 heats up and it is preferable to avoid any flow. heat goes back to the heat exchanger and the cooled product.
- the thermal leakage along the side walls 41 of the container to the heat exchanger generates additional cooling by additional evaporation which causes additional adsorption. When the amount of adsorbent used is limited, this additional adsorption becomes difficult to manage.
- a removal of the first and second cavities adsorbent block 31 is ensured by an extension of the side walls 41 of the container 40 beyond the adsorbent block.
- the side walls 41 of the container 40 may extend along the third 23038PC
- Moldings 43 are then formed in the portion of side walls 41 extending beyond the adsorbent block 31. Moldings may also be formed on other portions of the container 40. The moldings in particular allow a vacuum resistance improved on the container portion receiving the second and third cavity past the adsorbent block.
- the container 40 contains a small portion of the first cavity 10 and all of the second 20 and third 30 cavities.
- the package is then constituted by the container 40, for example a portion of a can, and another box 50 assembled by gluing or brazing on the end of the walls of the container 40.
- the box 50 serves as a receptacle for the product to be cooled, for example an ice cream. It cooperates with a cover 55 which can be screwed for example.
- the first cavity 10 is also remote from the adsorbent block 31 to reduce the thermal bridge. This thermal bridge limitation is important when it is desired to refrigerate the product of the first cavity below 0 ° C while using a limited amount of adsorbent.
- the container 40 contains all of the first 10, second 20 and third 30 cavities.
- the cavities 10, 20, 30 of the package then constitute compartments of a single box 40, for example a can of conventional drink can.
- a separating cover 25 between the second 20 and third 30 cavities is introduced into the container 40 and fixed by gluing or stirring on the inner walls of the container 40.
- the common wall 15 of the first 10 and second 20 cavities, forming the heat exchanger is also introduced into the container 40 and fixed by gluing or brazing, after the coolant has been introduced.
- the heat exchanger 15 has a conical shape, possibly with ribs, to promote the heat exchange by convection in the first cavity 10 when it contains a drink to cool.
- the first cavity 10 containing the beverage to be cooled is not removed from the adsorbent block 31.
- the amount of adsorbent 31 used being five to eight more important in this embodiment, the additional adsorption generated by the thermal leakage along the walls 41 of the container 40 can be ensured by leakage 23038PC
- the adsorbent block 31 can then fill almost completely the third cavity 30. The moldings are then not necessary.
- a simplified self-cooling package can be manufactured.
- the present invention is not limited to the embodiments described by way of example; thus, the assembly of the cavities constituting the package can be adapted to the envisaged applications, in particular, the shapes and dimensions can vary, as well as the arrangement of the cavities in the container.
- the illustrated examples show the adsorbent shaped rigid block, but it is understood that the package according to the invention can use an adsorbent in the form of granules for example.
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)
- Packages (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05798474A EP1794515A1 (fr) | 2004-09-20 | 2005-08-26 | Emballage auto-refrigerant |
US11/575,185 US20080047279A1 (en) | 2004-09-20 | 2005-08-26 | Self-Cooling Package |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0409922 | 2004-09-20 | ||
FR0409922A FR2875587B1 (fr) | 2004-09-20 | 2004-09-20 | Emballage auto-refrigerant |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006032743A1 true WO2006032743A1 (fr) | 2006-03-30 |
Family
ID=34951676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/002150 WO2006032743A1 (fr) | 2004-09-20 | 2005-08-26 | Emballage auto-refrigerant |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080047279A1 (fr) |
EP (1) | EP1794515A1 (fr) |
FR (1) | FR2875587B1 (fr) |
WO (1) | WO2006032743A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4911740A (en) * | 1988-08-02 | 1990-03-27 | Schieder Hans B | Pressure responsive valve in a temperature changing device |
WO2000077463A1 (fr) * | 1999-06-11 | 2000-12-21 | Schieder Hans B | Dispositif refrigerant autonome active par la pression |
WO2003042610A1 (fr) * | 2001-11-16 | 2003-05-22 | Thermagen S.A. | Echangeur thermique |
US20030159461A1 (en) * | 2000-07-06 | 2003-08-28 | Pierre Jeuch | Adsorption refrigerating device |
WO2003073019A1 (fr) * | 2002-02-28 | 2003-09-04 | Thermagen | Emballage auto-refrigerant et dispositif de déclenchement associe |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4522049A (en) * | 1983-03-14 | 1985-06-11 | Aluminum Company Of America | Aluminum alloy food can body and method for making same |
GB9801436D0 (en) * | 1998-01-24 | 1998-03-18 | Bass Plc | Improvements in & relating to cooling containers of beverages |
US20030113416A1 (en) * | 2001-12-14 | 2003-06-19 | Wycliffe Paul Anthony | Metal container with seam connecting body and top portion |
-
2004
- 2004-09-20 FR FR0409922A patent/FR2875587B1/fr not_active Expired - Fee Related
-
2005
- 2005-08-26 US US11/575,185 patent/US20080047279A1/en not_active Abandoned
- 2005-08-26 EP EP05798474A patent/EP1794515A1/fr active Pending
- 2005-08-26 WO PCT/FR2005/002150 patent/WO2006032743A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4911740A (en) * | 1988-08-02 | 1990-03-27 | Schieder Hans B | Pressure responsive valve in a temperature changing device |
WO2000077463A1 (fr) * | 1999-06-11 | 2000-12-21 | Schieder Hans B | Dispositif refrigerant autonome active par la pression |
US20030159461A1 (en) * | 2000-07-06 | 2003-08-28 | Pierre Jeuch | Adsorption refrigerating device |
WO2003042610A1 (fr) * | 2001-11-16 | 2003-05-22 | Thermagen S.A. | Echangeur thermique |
WO2003073019A1 (fr) * | 2002-02-28 | 2003-09-04 | Thermagen | Emballage auto-refrigerant et dispositif de déclenchement associe |
Also Published As
Publication number | Publication date |
---|---|
FR2875587B1 (fr) | 2007-03-30 |
FR2875587A1 (fr) | 2006-03-24 |
EP1794515A1 (fr) | 2007-06-13 |
US20080047279A1 (en) | 2008-02-28 |
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