Patent ID: 8713956
Filing Date: 2014-05-06
Classification: F25B,G06F

Abstract:
1. A refrigeration system for compact equipment comprising electronic circuits and internally provided with a heat source to be cooled, said refrigeration system comprising: a heat dissipation device mounted in the equipment and including a heat absorbing portion, absorbing heat from the heat source, and a heat dissipation portion disposed so as to release the heat absorbed from the heat source to an environment external to the equipment, wherein the heat dissipation portion is accessible through the exterior of the equipment and further comprises an auxiliary refrigeration circuit, external to the equipment and having: a heat absorbing means to be selectively coupled to the heat dissipation portion, to receive therefrom, by conduction, at least part of the heat received from the heat source and to be dissipated by the heat dissipation portion; and a heat dissipation means to release the heat to the environment external to the equipment, the heat dissipation device being defined by any one of the system including: heat conduction in a solid medium, heat-pipe, thermosiphon, circulating fluid pumping mechanical vapor compression, in order to transfer heat from the heat absorbing portion to the heat dissipation portion, the heat dissipation portion defining at least one heat exchange housing formed, at least in part, by a heat exchange wall, whilst the heat absorbing means comprises at least one plug element formed, at least in part, by an outer heat exchange surface, said plug element being tightly removably fitted in the interior of a respective heat exchange housing, so as to provide the coupling of the heat absorbing means to the heat dissipation portion and to allow heat exchange, by conduction, to occur between the heat exchange wall and the outer heat exchange surface of said parts, the heat exchange housing being an elongated hole provided in a body made of a high thermal conductivity material and which is thermally connected to the heat dissipation portion, the heat exchange wall of said elongated hole tightly surrounding and contacting the heat exchange surface of the plug element when the latter is fitted in the interior of the elongated hole, the auxiliary refrigeration circuit being provided in an interior of a compact casing, the auxiliary refrigeration circuit being a refrigeration circuit containing a working fluid to thermally connect the heat absorbing means to the heat dissipation means and the auxiliary refrigeration circuit being refrigeration circuit by mechanical compression of a refrigerant fluid including: a compressor; a condenser defining the heat dissipation means, receiving refrigerant fluid from the compressor and releasing it to an expansion device and, subsequently, to an evaporator defined by the plug element of the heat absorbing means, and the plug element being defined by a refrigerant fluid tube having an inlet end and an outlet end and longitudinally and internally comprising a plurality of peripheral channels and a central channel, a first end of the peripheral channels being connected to the inlet end of the refrigerant fluid tube, whilst a second end of the peripheral channels is open to a first end of the central channel, a second end of the central channel being open to the outlet end of the refrigerant fluid tube.