Patent ID: 7980295
Filing Date: 2011-07-19
Classification: F28D

Abstract:
1. An evaporator for evaporating a refrigerant with heat generated by a heat generating body, comprising: a hermetically sealed vessel having an inlet to be connected to a liquid pipe and an outlet to be connected to a vapor pipe; a refrigerant supply portion provided in the hermetically sealed vessel, in which the refrigerant in a liquid state flowing from the liquid pipe is stored; a heat transfer portion provided in the hermetically sealed vessel, to which the liquid refrigerant stored in the refrigerant supply portion is supplied; heat transfer fins having a heat transfer surface provided in the heat transfer portion, which are so inclined that the heat transfer surface becomes higher on the side of the vapor pipe than on the side of the liquid pipe; a wick provided on the heat transfer surface of the fins, which is formed thicker on the side of the liquid pipe than the vapor pipe side, to transfer the liquid refrigerant supplied to the heat transfer portion towards the outlet by means of capillarity, in which the liquid refrigerant is vaporized by the heat introduced from an outside heat generating body into the heat transfer portion; and a refrigerant cooling portion, which includes a plurality of heat radiation fins arranged in parallel on an outer surface of the refrigerant supply portion to prevent the temperature of the refrigerant introduced into the refrigerant supply portion from rising; wherein a center of the heat transfer surface is positioned on the side of the vapor pipe with respect to a center of the hermetically sealed vessel.