To obtain a cooling device capable of easily removing vapor bubbles so as to gain stable cool performance even if the vapor bubbles are generated in a liquid-phase working fluid.
A cooling device includes: an evaporator 1 having a porous material 12 with a vapor passage 10 and a liquid passage 11 which are separated by the porous material, wherein a gas-phase working fluid is condensed; a condenser 2 for condensing the gas-phase working fluid; a liquid reservoir tank 3 for reserving the liquid-phase working fluid; a vapor tube 4 for connecting the outlet of the vapor passage of the evaporator and the inlet of the condenser; a liquid pipe 5 for connecting the outlet of the condenser and a first inlet 3A of the liquid reservoir tank; a liquid supply pipe 6 for connecting the outlet of the liquid reservoir tank with the inlet of the liquid passage of the evaporator; a liquid return line 7 for connecting the outlet of the liquid passage of the evaporator and a second inlet 3B of the liquid reservoir tank; and a liquid transportation unit 8 disposed along the liquid supply pipe.
OGATA SHIN
HIBINO SEIJI
Masahisa Yamamoto