Cooling system by contact

Abstract

A cooling system which comprises a cooling fluid to cool a body or object, and at least a cold transmission surface in direct or indirect contact with said body or object. It is characterized in that it comprises at least a device for collecting and storing frigories that can receive a preset quantity of cooling fluid from an external charging device, store said frigories and transmit them at a preset velocity and temperature to said cold transmission surface. It is obtained a system in which it is not necessary to use a cryogenic deposit forming part of it, so that the security is enhanced and the cost is reduced. Further, the invention comprises a device (3) for absorbing heat that comprises a thermally isolated container (8), with the exception of a cold transmission surface (9) in direct or indirect contact with the body or object to be cooled, said container (8) comprising a radiator (10) that can receive a preset quantity of said cryogenic cooling fluid from an external charging device, and in that said container (8) also comprises a material around the radiator (10), filling the volume of the container (8) not occupied by the radiator (10), said material having a thermal conductivity suitable of storing the negative calories (frigories) transferred by contact from said radiator (10), and for transmitting said negative calories (frigories) at a preset velocity and preset temperature to said cold transmission surface (9). Furthermore, the system provides a great autonomy because it can store a great quantity of frigories.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is the U.S. national phase of PCT / EP2007 / 054466, filed May 9, 2007. PCT / EP2007 / 054466 claims benefit under the Paris Convention to ES P-200601192, filed May 10, 2006. The disclosures of both of ES P-200601192 and PCT / EP2007 / 054466 are hereby incorporated herein by reference.SUMMARY OF THE INVENTION[0002]The present invention refers to a cooling system by contact.BACKGROUND OF THE INVENTION[0003]There are known different cooling systems by contact of a body or object, as will be described hereinafter.[0004]U.S. Pat. No. 5,438,707 and U.S. Pat. No. 4,738,119 disclose, respectively, cooling devices of a body comprising a garment which houses a tubing network provided with little openings or micropores through which pressurized gas flows, such as air or carbon dioxide. Said pressurized gas, once injected, expands quickly through said openings or micropores cooling itself and absorbing a great quantity of heat, producing a cool...

AI Technical Summary

Benefits of technology

[0015]Therefore, the use of a cryogenic deposit forming part of the cooling system by contact is not necessary, as at the state of the art, and the security is enhanced because there is no risk of leaks and / or explosion when the pressure is increased, and the cost is considerably reduced.

[0016]Furthermore, the system provides a great autonomy because it can store a great quantity of frigories, about 20 to 40 Kilofrigories.

[0017]As stated above, in the system of the present invention, the cooling fluid is charged by an external charging device offering a pressure enough to inject said cooling fluid to the system.

[0038]Advantageously, the system comprises control means for the temperature transfer.

Problems solved by technology

Said devices present the drawback that they include at said garment a very extended and complex tubing circuit through which the cooling substance flows, resulting in a not very flexible garment.

Furthermore, the tubes cool the garment only when the pressurized gas flows through them, but they cannot store frigories (negative calories) during a long time.

In the other hand, any torn of said garment can affect the circuit, making the cooling device useless, and it can also promote a leak of said coolant which, depending on the kind of substance used, can involve a serious danger for the user of the device.

Furthermore, another drawback is that said devices cannot be used with refrigerants at a very low temperature, because in these devices the coolant contacts directly the wearer of the garment.

Both devices discloses in this two documents have the drawback that they are not suitable to provide cooling at a very low temperature, because the cooling packages are in direct contact with the wearer of the garment.

This device has the drawback that the wearer of the garment must wear one or more deposits of liquid nitrogen, which the involved risk if there is a leak at each of said deposits.

On the other hand, the use of cryogenic deposits makes the device expensive.

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