An adsorption refrigeration device comprising an evaporator chamber containing a refrigerant liquid that evaporates under the effect of a depression, a connecting device and an adsorption chamber containing an adsorbent capable of fixing the vapors of the refrigerant liquid, wherein the adsorbent is
An adsorption refrigeration device comprising an evaporator chamber containing a refrigerant liquid that evaporates under the effect of a depression, a connecting device and an adsorption chamber containing an adsorbent capable of fixing the vapors of the refrigerant liquid, wherein the adsorbent is constituted by one or more rigid blocks comprising a plurality of cavities, at least one part of said cavities being feeder cavities capable of diffusing vapors of refrigerant liquid on the adsorbent.
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What is claimed is: 1. An adsorption refrigeration device comprising an evaporator chamber containing a refrigerant liquid with its vapor that evaporates under the effect of a depression, a connecting device and an adsorption chamber under vacuum containing an adsorbent capable of fixing the vapors
What is claimed is: 1. An adsorption refrigeration device comprising an evaporator chamber containing a refrigerant liquid with its vapor that evaporates under the effect of a depression, a connecting device and an adsorption chamber under vacuum containing an adsorbent capable of fixing the vapors of the refrigerant liquid, wherein the adsorbent comprises one or more rigid blocks comprising a plurality of cavities, at least one part of said cavities being feeder cavities capable of diffusing vapors of refrigerant liquid on the adsorbent. 2. A refrigeration device according to claim 1, wherein at least one other cavity is a heat-exchange cavity capable of discharging the heat released during the adsorption of the vapors of the refrigerant liquid. 3. A refrigeration device according to claim 2, wherein the block has two zones separated by a thermally conductive vacuum-tight sheathing, the first zone comprising the adsorbent and the feeder cavities and opening on one face of the block in the adsorption chamber, and the second zone comprising the at least one heat-exchange cavity and opening on the opposite face of the block on the outside of the adsorption chamber. 4. A refrigeration device according to claim 3, wherein the sheathing comprises at least one metal tube that sheathes the at least one heat-exchange cavity. 5. A refrigeration device according to claim 3, wherein the first zone comprises metallic ribs thermally bonded to the sheathing. 6. A refrigeration device according to claim 5, wherein the ribs are in aluminum. 7. A refrigeration device according to claim 3, wherein the sheathing comprises a plastic film resting on the walls of the second zone of the block and bonded to the adsorption chamber. 8. A refrigeration device according to claim 3, wherein the second zone of the adsorbent block comprises a vapor diffusion device. 9. A refrigeration device according to claim 8, wherein the vapor diffusion device consists of a hydrophobic porous material. 10. A refrigeration device according to claim 3, wherein the second zone of the block comprises a lid with at least one aperture to the outside atmosphere that limits the flow rate of a vapor of a phase changing material. 11. A refrigeration device according to claim 10, wherein the vapor of the phase changing material undergoes adiabatic expansion through said at least one aperture so as to lower the temperature when it escapes outwards. 12. A refrigeration device according to claim 11, wherein the lowering of the temperature of the vapor is greater than or equal to 35째 C. 13. A refrigeration device according to claim 2, wherein the at least one heat-exchange cavity contains a heat sink constituted by a phase-changing material. 14. A refrigeration device according to claim 13, wherein the phase-changing material passes from the solid state to the liquid state. 15. A refrigeration device according to claim 13, wherein the phase-changing material passes from the liquid state to the gas state. 16. A refrigeration device according to claim 15, wherein the material is water. 17. A refrigeration device according to claim 15, wherein the phase-changing material comprises an aromatic additive. 18. A refrigeration device according to claim 2, with cyclical operation, comprising an adsorption phase and an adsorbent regeneration phase, the at least one heat-exchange cavity capable of heating the adsorbents for their regeneration. 19. A refrigeration device according to claim 18, wherein the at least one heat-exchange cavity contains a heat-carrying fluid comprises of a liquid-gas phase-changing material. 20. A refrigeration device according to claim 19, wherein the boiling temperature of the heat-carrying fluid is different in the two distinct phases of adsorption and regeneration. 21. A refrigeration device according to claim 20, wherein the boiling temperature of the heat-carrying fluid is regulated by the pressure of the fluid flowing in the thermal circuit in contact with the domes. 22. A refrigeration device according to claim 18, wherein the at least one heat-exchange cavity is closed by a dome whose external surface is in contact with a fluid flowing in a thermal circuit. 23. A refrigeration device according to claim 18, wherein the at least one heat-exchange cavity comprises at least one tube for the supply of heat-carrying fluid. 24. A device according to claim 1, wherein the adsorbent is a zeolite. 25. A device according to claim 1, wherein the refrigerant liquid is water and/or an alcohol. 26. A device according to claim 1, wherein the block further comprises thermal insulation on its periphery. 27. A device according to claim 26, wherein the thermal insulation comprises a mixture of adsorbent and resin. 28. A device according to claim 1, for single use. 29. A method of shaping an adsorbent block for use in a refrigeration device, wherein the method comprises: mixing an adsorbent material with a binder to obtain a paste; shaping the paste to a block with cavities shaped within the block; and drying the shaped block. 30. The method according to claim 29, wherein shaping the paste comprises an injection molding step in a mold provided with the cavities' shapes. 31. The method according to claim 29, wherein shaping the paste comprises an extrusion step through a die provided with the cavities' shapes and a cutting step. 32. The method according to claim 29, wherein the method further comprises creating a thermally conductive vacuum-tight sheathing in the shaped block. 33. A method for manufacturing an adsorption refrigeration device comprising an evaporator chamber containing a refrigerant liquid with its vapor that evaporates under the effect of a depression, a connecting device and an adsorption chamber under vacuum containing an adsorbent capable of fixing the vapors of the refrigerant liquid, wherein the adsorbent comprises one or more rigid blocks comprising a plurality of cavities, at least one part of said cavities being feeder cavities capable of diffusing vapors of refrigerant liquid on the adsorbent, wherein the method further comprises: shaping at least one adsorbent block, wherein shaping an adsorbent block comprises: mixing an adsorbent material with a binder to obtain a paste; shaping the paste to a block with cavities shaped in the block; and drying the shaped block; placing the shaped block in the adsorption chamber; and providing the connecting device between the adsorption chamber and the evaporator chamber. 34. The method according to claim 33, wherein at least one cavity of the adsorbent block being a heat-exchange cavity, and the method further comprises filling the heat-exchange cavity with phase changing material. 35. The method according to claim 34, wherein the method further comprises providing a diffusing device on one face of the adsorbent block where the heat-exchange cavity opens. 36. The method according to claim 34, wherein the method further comprises providing a lid on one face of the adsorbent block where the heat-exchange cavity opens, the lid comprising at least one hole adapted to provide for an adiabatic expansion of vapor of the phase changing material.
Maier-Laxhuber Peter (Saumweberstrasse 14 D-8000 Munchen 60 DEX) Kaubek Fritz (Gasparistrasse 5 A D-8000 Munchen 71 DEX), Zeolite blanks with a high heat conductivity and process for making the same.
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