| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling device in which a working fluid can be supplied to a heat receiving part and deterioration of cooling capacity is suppressed, even when heat generated in a semiconductor switching element in an inverter circuit of an electronic apparatus and an electric vehicle is increased.SOLUTION: In a cooling device 3 circulating and cooling a working fluid 11 by a phase change of a liquid phase and a gas phase, at least one outlet 15 and a heat dissipating path 6 are provided and a cross-sectional area of the whole heat dissipating path 6 is configured to be larger than a cross-sectional area of a return path 7. Accordingly, it can be suppressed that the downstream pressure of a backflow prevention valve 16 is increased more than the upstream pressure of the backflow prevention valve 16 by decreasing a circulation resistance value of the working fluid 11 in the heat dissipating path 6 and by increasing head pressure of the working fluid 11 in the return path 7. As a result, the working fluid 11 can be supplied to the heat receiving part 4 even when the heat generated in the semiconductor switching element 9 is increased and thereby, the cooling apparatus 3 suppressed in the deterioration of cooling capacity can be obtained. |
