Heat exchanger and tempering container comprising a heat exchanger

Abstract

A heat exchanger comprises an evacuated reaction chamber ( 2, 2′, 23, 33 ) containing at least one reaction medium and a storage chamber ( 25, 35 ) containing an activation medium which reacts with the reaction medium in such a way as to modify the temperature. The reaction chamber and the storage chamber can be brought into a communicating relationship, whereby the reaction medium and the activation medium are contacted with each other and the temperature-modifying reaction is triggered. The reaction chamber ( 2, 2′, 23, 33 ) is defined by walls made of a vacuum-tight material ( 3 ), which walls are kept at a distance from each other, at least in sections, by supporting bodies ( 4, 7, 10 ), with the supporting bodies ( 4, 7, 9, 10 ) keeping free transport paths ( 5, 8 ) for the reaction medium ( 11 ) inside the reaction chamber. The vacuum-tight material ( 3 ) forming the walls of the reaction chamber is designed as a flexible film, preferably a composite film.

1 . A heat exchanger, comprising
 an evacuated reaction chamber containing at least one reaction medium and a storage chamber containing an activation medium which reacts with the reaction medium in such a way as to modify the temperature, wherein the reaction chamber and the storage chamber can be brought into a communicating relationship, whereby the reaction medium and the activation medium are contacted with each other and the temperature-modifying reaction is triggered, the reaction chamber being defined by walls made of a vacuum-tight material, which walls are kept at a distance from each other, at least in sections, by supporting bodies, with the supporting bodies keeping free transport paths for the reaction medium inside the reaction chamber, wherein the vacuum-tight material forming the walls of the reaction chamber is a flexible film, preferably a composite film.   
   
   
       2 . The heat exchanger according to  claim 1 , wherein the film is sealable and/or gluable. 
   
   
       3 . The heat exchanger according to  claim 1 , wherein the reaction medium comprises evaporation media, endothermic reactants or exothermic reactants. 
   
   
       4 . The heat exchanger according to  claim 1 , wherein the storage chamber contains an adsorbing medium as the activation medium and optionally a heat sink. 
   
   
       5 . The heat exchanger according to  claim 1 , wherein the storage chamber contains an activation agent as the activation medium, which, upon contact with the reactant, triggers an exothermic reaction, optionally with a PCM device. 
   
   
       6 . The heat exchanger according to  claim 1 , wherein supporting bodies are formed from granules which are pressed against each other due to the vacuum in the reaction chamber, the granules preferably being porous. 
   
   
       7 . The heat exchanger according to  claim 1 , wherein supporting bodies are formed from moulded articles, which preferably are open-pored. 
   
   
       8 . The heat exchanger according to  claim 1 , wherein supporting bodies are constructed as a framework against which the film is pressed due to the vacuum in the reaction chamber. 
   
   
       9 . The heat exchanger according to  claim 1 , wherein supporting bodies are formed from a material with good heat conduction. 
   
   
       10 . The heat exchanger according to  claim 1 , wherein supporting bodies are constructed as storage elements for the reaction medium or that supporting bodies are composed of the reaction medium provided as a solid body. 
   
   
       11 . The heat exchanger according to  claim 1 , wherein the storage chamber is integrated in the heat exchanger, the storage chamber being kept on the heat exchanger preferably via a connection with the flexible vacuum-tight material. 
   
   
       12 . The heat exchanger according to  claim 1 , wherein the storage chamber is constructed in a separate unit. 
   
   
       13 . The heat exchanger according to  claim 1 , wherein the reaction chamber is separated from the storage chamber by a membrane and an optional partition wall or a valve. 
   
   
       14 . The heat exchanger according to  claim 13 , further comprising at least one actuator for cutting through the membrane and the optional partition wall or for opening the valve. 
   
   
       15 . The heat exchanger according to  claim 1 , wherein the storage chamber is evacuated. 
   
   
       16 . A tempering container comprising an intake space for receiving a product to be tempered, wherein a heat exchanger according to  claim 1  is connected to the intake space in a heat conducting manner. 
   
   
       17 . The tempering container according to  claim 16 , wherein it is designed as a beverage can or a PET plastic bottle or a cardboard composite packing or a party barrel. 
   
   
       18 . The heat exchanger according to  claim 4 , wherein the heat sink is a phase-changing agent. 
   
   
       19 . The heat exchanger according to  claim 5 , wherein the PCM device is a phase-changing agent being arranged in the reaction chamber.