Patent ID: 8074470
Filing Date: 2011-12-13
Classification: F25B,F25D

Abstract:
1. A cooling element with a sorption agent, that under vacuum can sorb a vapour-like working agent that evaporates from a liquid working agent in an evaporator and with a regulator organ in a working agent vapour channel between the sorption agent and the evaporator, wherein the entire cooling element is hermetically enclosed by a gas-tight multi-layer film, the multi-layer film having a flexible construction and being under vacuum so as to enclose the regulator organ, the working agent vapour channel and the evaporator, and wherein the evaporator and the working agent vapour channel remain flexible and the working agent vapour can flow to the sorption agent only through the regulator organ, wherein at least one surface of the evaporator has a foldable construction such that the flexible evaporator covers a plurality of internal surfaces of a thermally insulated container, wherein the evaporator comprises a plurality of plates separated by folding portions for providing said foldable construction to said evaporator, and wherein the evaporator contains a thermostat valve for controlling the temperature of the evaporator, the thermostat valve opening and closing a path of working agent vapour from the evaporator to the sorption agent in response to a temperature change of the evaporator.