| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling device showing a sufficient cooling performance.SOLUTION: This invention relates to a cooling device having a refrigerant circulated therein that comprises a heat receiving part having a refrigerant therein, a heat radiation part heat exchanging with external fluid flowing from the heat receiving part, a first piping and a second piping connecting the heat receiving part with the heat radiation part. The heat radiation part has a first connecting part connected to the first piping, a second connecting part connected with the second piping, a heat exchanging part of which one end is connected to the first connecting part and the other end is connected to the second connecting part. The first connecting part has a first surface, which includes an end surface of the heat exchanging part, and a second surface, which is different from a surface contacting with the heat exchanging part, of surfaces abutting on the axial direction of the heat exchange part, and a sectional area of the first surface is smaller than a sectional area of the second surface.SELECTED DRAWING: Figure 1 |
