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
  • F25D5/02—Devices using endothermic chemical reactions, e.g. using frigorific mixtures portable, i.e. adapted to be carried personally
• • 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
  • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
  • F25D3/107—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air portable, i.e. adapted to be carried personally
• • 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
  • F25D2331/803—Bottles
• • 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

Definitions

• the invention relates to a heat exchanger comprising an evacuated reaction chamber containing at least one reaction medium and a storage chamber containing an activation medium which contains an activation medium which reacts temperature-changingly with the reaction medium, whereby the reaction chamber can be brought into communication with the storage chamber, whereby the reaction medium and the Activation medium are brought into contact and the temperature-changing reaction is triggered, wherein the reaction chamber is bounded by walls of vacuum-tight material, which are at least partially held by support body at a distance from each other, wherein the support body free transport routes for the reaction medium within the reaction chamber
• the invention further relates to a tempering with a heat exchanger.
• temperature-regulating packaging modules that enable a consumer to bring the packaged goods at the desired time by activating the module to a predefined temperature range, the packaged either (by evaporation / relaxation processes or an endothermic reaction of reagents) is cooled or by a exothermic reaction of reagents is heated.
• An important component of these temperature-regulating packaging modules is the heat exchanger, which has to ensure optimal temperature transfer of the generated cold / heat to the packaged goods.
• the heat exchanger should have the following properties:
• Minimum volume to provide the packaged goods with maximum volume i. , the largest possible ratio of heat exchanger surface to heat exchanger volume
• temperature-regulating packaging / modules must generate only a small additional cost share of the packaging and therefore the heat exchanger must be very cheap and efficient to produce.
• a self-cooling beverage can in which a cooling process is implemented based on an adsorption chiller.
• the self-contained system includes two evacuated vacuum chambers.
• the chamber consists of an elaborate, thin-walled deep-drawn aluminum part (double-deep drawn), which is coated with water gel.
• This chamber 1 represents the evaporator and heat exchanger.
• the chamber 2 is filled with a Ab / Adsorbermaterial for water vapor.
• Chamber 2 is further surrounded by a phase change material (PCM) as a heat sink, which changes from the solid to the liquid state of matter when exposed to heat and thereby absorbs heat without its own temperature increase.
• PCM phase change material
• the water gel from Kammerl evaporates through the vacuum even at temperatures below 100 ° C (evaporation temperature corresponding to the vapor pressure curve, so that evaporation to the ° C minus range is possible) and withdraws through the evaporation process surrounding the chamber 1 drink heat.
• the resulting water vapor is thereby bound by the Ab / adsorber in chamber 2, and thus the vacuum remains upright and the evaporation and cooling process continues.
• the surrounding phase change material limits the temperature of the adsorbent / absorber since it becomes warm when adsorbed.
• a disadvantage of this known self-cooling beverage can is the fact that the double-deep-drawn aluminum body is expensive to produce and therefore expensive. Since this is in the beverage can, it must be sealed in addition to the drink.
• WO 1992/002770 A1 discloses a vacuum-insulated, adsorbent-operated cooling device whose cooling principle corresponds to that of the self-cooling beverage cans disclosed in the above-cited documents. The difference is that according to the disclosure of WO 1992/002770 A1 the Ab / Adsorber emotions (chamber 2) is directly surrounded by the heat sink (chamber 1) and the whole module, including the Ab / Adsorber emotions floats in the packaged.
• a disadvantage of this design is that due to the geometric structure (adsorber surrounded by the heat sink) results in a lower efficiency and thus an increase in the module. As a result, there is less space for the packaged goods, which makes this cooling device relatively expensive. Furthermore, thermal cannibalization effects occur, which reduce the cooling capacity, since condensation heat is generated in the adsorber chamber enclosed by the evaporation chamber, which in turn causes additional evaporation in the evaporation chamber, which should always take place exclusively by removal of heat from the packaged product.
• a heat exchanger which consists of at least two communicating chambers.
• a chamber contains a vacuum that lowers the boiling point of water also in the chamber.
• a second chamber contains an adsorbent which ad / absorbs the vapor generated by the boiling water in the first chamber.
• Inner support bodies between the walls of the chambers prevent the walls of the chambers from collapsing while the vacuum is in the chambers.
• the support bodies have pores and channels so that the water vapor can move between the chambers.
• the walls of the chambers are made of the same material as the cans in which they are housed, that is to say made of aluminum sheet. By choosing this material, only a limited variety in the shape of the chambers can be achieved with reasonable effort.
• the chambers shown in the embodiments are also cuboid.
• the permeability is not satisfactory.
• the present invention solves this problem by further development of a generic heat exchanger by using as a vacuum-tight material, the walls of the reaction chamber forms, a flexible film, preferably a composite film, is used, and by providing a tempering container with a heat exchanger according to the invention.
• Advantageous embodiments of the invention are set forth in the subclaims.
• the film is preferably designed as a plastic film or metal foil, composite films as plastic-metal-foil composites.
• a composite film is a three-layer film with an outer layer of polyester, a middle layer of aluminum and an inner layer of polyethylene called. Adjacent layers are each glued to a polyurethane 2-component adhesive.
• thermoelectric Furthermore, the heat exchanger according to the invention offers the following advantages:
• the heat exchanger can be adapted to the thermodynamic conditions and the temperature control vessel to which it is to be used. It should be further mentioned that the erfmdungszee heat exchanger may comprise one or more support body.
• support bodies can be realized according to the invention in several ways.
• support bodies are formed from granules, wherein the granules are preferably porous.
• granules are spherical.
• the granules define between each other transport routes for the reaction media.
• supporting bodies are formed from shaped bodies.
• the transport paths are defined between or on the moldings, wherein in a preferred embodiment, the moldings are open-pore and the pores also form transport routes for reaction media.
• supporting bodies have a frame construction.
• the frame structure may have different straight, curved, angled, corrugated beams, spacers, etc. It can be designed as a framework. For optimum temperature transfer, it is further expedient if some or all of the support body are formed of good heat-conducting material.
• the support bodies are designed as storage elements for the reaction medium (for example in pores of the support elements) or consist wholly or partly of the reaction medium.
• reaction media that remain dimensionally stable during their endothermic or exothermic reaction. Examples include silica gels.
• reaction media stored in the reaction chamber of the heat exchanger comprise evaporation media and / or endothermic reactants.
• the reaction media stored in the reaction chamber of the heat exchanger include exothermic reactants.
• the reaction chamber of the inventive heat exchanger with a, optionally evacuated, storage chamber connected or connectable.
• the storage chamber may on the one hand be integrated directly into the heat exchanger, wherein it is preferably connected by adhesive, sealing or other fastening techniques with the flexible, vacuum-tight material of the heat exchanger.
• the storage chamber may be formed as a separate, replaceable unit which is brought into communication with its reaction chamber for activation of the heat exchanger.
• an adsorber and optionally a heat sink, such as a phase-modifying agent (PCM) to accommodate.
• the storage chamber is equipped with an activating agent which causes an exothermic reaction when brought into contact with the reaction agent contained in the reaction chamber, optionally in the reaction chamber, a latent heat storage such as a phase-changing agent (PCM ) is arranged to maintain the temperature in the reaction chamber within a predetermined temperature range.
• an activating agent which causes an exothermic reaction when brought into contact with the reaction agent contained in the reaction chamber
• a latent heat storage such as a phase-changing agent (PCM ) is arranged to maintain the temperature in the reaction chamber within a predetermined temperature range.
• PCM phase-changing agent
• the reaction chamber Prior to activation of the heat exchanger, the reaction chamber is conveniently separated from the storage chamber by a membrane or valve, the valve being e.g. may include a valve sheet.
• the membrane is cut by an actuator or an actuator is used to open the valve.
• the erfmdungsconcee heat exchanger can be easily integrated into containers, such as a beverage can, a PET plastic bottle, a cardboard composite pack or a party keg and allows excellent temperature of the stored in these containers liquids.
• FIG. 1 shows a heat exchanger according to the invention in longitudinal section
• FIG. 2 shows an enlarged view of a portion of the heat exchanger of FIG. 1
• FIG. 3 shows a sectional partial view of a further embodiment of a heat exchanger according to the invention
• FIGS. 4A and 4B show partial views in turn of FIGS. 6A and 6B show a longitudinal section of a first embodiment of a tempering container according to the invention
• FIGS. 7A and 7B show a longitudinal section of a tempering container according to the invention
• 9 shows a longitudinal section through a tempering container us believing as a PET plastic bottle with built-in heat exchanger
• Fig. 10 shows a longitudinal section through a formed as a cardboard composite packing Temperier organizations here he with built-in heat exchanger
• Fig. 11 is a longitudinal section through a designed as a party keg temperature control with built-in heat exchanger.
• FIG. 1 shows a longitudinal section through the heat exchanger 1.
• the reaction chamber 2 is bounded by walls of a flexible, vacuum-tight material 3, which are held by support body 4 at a distance from each other, the support body define the geometry of the heat sink 1 and hold open transport paths 5 for the reaction media contained in the reaction chamber 2, as in 2, which shows an enlarged longitudinal section of a portion of the heat exchanger 1.
• the support bodies 4 are designed as frame elements which leave the transport paths 5 open for the reaction medium.
• the flexible, vacuum-tight material 3 is designed for example as a composite film and forms an outer skin of the heat exchanger, which is a contact surface to the surrounding packaged goods.
• the flexible, vacuum-tight material 3 seals the reaction chamber 2 from the environment and thus ensures the separation of reaction chamber 2 and packaged goods.
• a reaction medium 11 is arranged (see Fig. 2). As can be seen from Fig.
• the flexible vacuum-tight material 3 is pulled down beyond the reaction chamber 2 and forms a boundary wall 3a of a recess 6, which can be formed as a storage chamber by the well after filling with a reaction medium, activation medium and / or adsorbent is closed at the bottom, or in which a module can be inserted, which contains a storage chamber, as will be explained in more detail below.
• the recess 6 is sealed relative to the reaction chamber by a partition wall 3 b.
• the heat exchanger 1 is produced by pulling the flexible vacuum-tight material 3 over the supporting bodies 4 (or inserting the supporting bodies 4 into a configuration of the flexible, vacuum-tight material 3.)
• the reaction chamber 2 defined thereby is evacuated and the heat exchanger 1 is sealed the negative pressure (vacuum) in the reaction chamber 2 of the heat exchanger 1, external pressure forces on the outer surfaces of the flexible, vacuum-tight material 3, which press the flexible vacuum-tight material 3 firmly against the support body 4, whereby the flexible vacuum-tight material 3 in combination with the supporting bodies
• the vacuum in the reaction chamber 2 simultaneously allows the evaporation of cooling liquid as a reaction medium at low temperatures.
• a thin multi-layer film (10 ⁇ m to 300 ⁇ m) which is adhesive or sealable is selected as the flexible vacuum-tight material 3.
• Foil guarantees a good heat conduction and by its adhesiveness or sealability a high
• the heat exchanger surfaces can be placed very close together due to the highly flexible geometry design, thus maximizing the surface area to volume ratio. Furthermore, the spacing construction according to the invention guarantees a consistently small distance between the heat exchanger surfaces.
• the invention also provides the following variants for the formation of a spacer construction:
• Fig. 3 shows in a section through a portion of a heat exchanger according to the invention, the formation of supporting bodies as dimensionally stable shaped body 10, which are preferably porous.
• a reaction medium 11 ' In the pores of the molded body 10 is a reaction medium 11 '.
• These shaped bodies 10 are surrounded by the flexible vacuum-tight material 3.
• the porosity of the moldings 10 as well as channels on the moldings and spaces between the moldings define the reaction chamber and the transport paths for reactants.
• the heat exchanger is part of an Ab / Adsorptionsksselreaes, the molded body material may also be good heat conductive.
• the cooling medium liquid, gel, etc.
• FIGS 4A and 4B show details of an embodiment of a heat exchanger according to the invention, in which the support bodies dimensionally stable, ideally spherical granules 7, which is introduced between the flexible vacuum-tight material 3 and keeps it at a distance, whereby the reaction chamber 2 'is defined.
• the space between the granules provides a transport path 8 for reactants.
• the granules 7 may be porous to further enhance the transport of the reactants.
• the heat exchanger is part of a Ab / Adsorptionshimltevon, the granules 7 should also be good heat conducting. Furthermore, it should be able to take up / store a reagent (liquid, gel, etc.), e.g. in his pores.
• granules 9 themselves can consist of the reaction medium.
• Fig. 4B is an example of a bulge 2a of Reaction chamber to see that leads to an increase in surface area of the heat exchanger.
• FIGS 5A and 5B show in perspective and in cross section an example of the free formability of a heat exchanger 1 'according to the invention. It should be emphasized that the shape of the inventive heat exchanger is freely selectable by the moldable materials and so any thermodynamic requirement and optimization can be adjusted.
• the first application example shows the use of a heat exchanger 22 in a tempering container 20 designed as a can to be cooled, which is shown in FIGS. 6A and 6B in longitudinal section.
• the heat exchanger 22 is integrated in the receiving space 29 of the temperature-controlled container 20 and is surrounded in the receiving space 29 by a liquid as a packaged product 21 to be cooled.
• the heat exchanger 22 operates on the Adsorptions KolteMF and has to a reaction chamber 23 and a storage chamber 25 which is formed as an adsorption chamber and which is separated from the reaction chamber 23 before activation by a membrane 24 from the reaction chamber 23 (see Fig. 6A).
• the reaction chamber 23 is in heat-conducting relationship with the packaged product 21 and ideally has a large surface area.
• the reaction chamber 23 is an evaporation liquid (coolant: for example, water), which extracts the packaged 21 heat during evaporation.
• the storage chamber 25 is provided with an adsorber and a heat sink, e.g. a phase change material [PCM], or an endothermic reactant or a high heat capacity material not shown in the drawing.
• PCM phase change material
• both chambers 23, 25 are evacuated and subsequently separated from one another by the membrane 24.
• the membrane 24 As long as the membrane 24 is intact, no continuous reaction can take place in the reaction chamber 23, since the suddenly arising vapor pressure in the reaction chamber adjusts according to the temperature of the packaged product 21 and an evaporation process in the reaction chamber 23 thus comes to a standstill. There is thus no further evaporation, as long as the steam sink (storage chamber 25) is not connected to the reaction chamber 23.
• the tempering 20 can be stored inactive over a longer period of time and activated only when needed. The activation of the cooling process takes place, as shown in Fig.
• the cooling process only comes to a standstill when either the adsorber is saturated, the entire evaporation medium (coolant) has evaporated or the packaged product 21 can not provide any further heat of vaporization - that is, the packaged product 21 has been cooled to the desired temperature range.
• the storage chamber 25 is integrated into the heat exchanger 22.
• the second application example shows the use of a heat exchanger 32 as a heating module in a temperature control tank 30, the heat exchanger being realized for example with an exothermic reaction system.
• an unillustrated reactant eg CaC12
• a liquid eg water
• the storage chamber 35 is integrated into a separate module 40, which is exchangeably connectable to the tempering tank 30.
• the storage chamber 35 is filled with the activation liquid 37, sealed with a membrane 34 and evacuated.
• the reaction chamber 33 is evacuated to ensure the dimensional stability of the heat exchanger 32.
• the module 40 is placed on the temperature control tank 30. However, as long as the membrane 34 of the storage chamber 35 and the partition 38 of the reaction chamber 33 are intact, no mixing of the two reaction substances takes place (as shown in Fig. 7 A). As a result, the temperature control tank 30 can be stored inactive over a longer period of time and activated only when needed.
• latent heat storage eg PCM
• a temperature corresponding to the melting point of the latent heat storage temperature is reached, but not exceeded - thereby can according to the melting temperature of the latent heat storage sesaps (depending on the used latent heat storage) set to the desired product temperature (depending on the application: drink, food, drug) to receive.
• the heating process comes to a standstill when the liquid 37 has completely dissolved in the reaction medium and the amount of heat stored in the latent heat storage was completely released to the packaged goods. Depending on the melting temperature of the latent heat storage ensures that there is no exceeding of the desired product temperature.
• FIGS. 8, 9, 10 and 11 respectively, the use of the heat exchanger 22 described above with reference to FIGS. 6A and 6B in a beverage can 41, a PET plastic bottle 42, a cardboard composite package 43 or a party keg 44 is shown emphasize that these uses are not an exhaustive list.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Sorption Type Refrigeration Machines (AREA)

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• 2005
  • 2005-07-08 AT AT0115805A patent/AT501614B1/de not_active IP Right Cessation
• 2006
  • 2006-07-05 CN CNU2006900000388U patent/CN201090961Y/zh not_active Expired - Fee Related
  • 2006-07-05 WO PCT/AT2006/000290 patent/WO2007006065A1/de active Application Filing
  • 2006-07-05 US US11/994,994 patent/US20090114378A1/en not_active Abandoned
  • 2006-07-05 EP EP06752593A patent/EP1902261A1/de not_active Withdrawn
• 2008
  • 2008-07-05 HK HK08107416A patent/HK1116335A2/xx not_active IP Right Cessation

Non-Patent Citations (1)

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