Cooler and manufacturing method of cooler

Abstract

To provide a cooler which can improve heat exchange efficiency between a cooling object and a heat medium.SOLUTION: A cooler 1 made of aluminum or an aluminum alloy having a heat medium circulation path 2 in which a heat medium circulates, comprises: a base member 10 in which a groove 11 having a bottom part 11a, a pair of sidewall parts 11b and an opening part 11c is formed; and a block member 20 which has a curved face shape overhanging toward the bottom part 11a side of the groove 11, and blocks the opening part 11c of the groove 11 by being joined to the base member 10. The heat medium circulation path 2 is formed in a space which is surrounded by the bottom part 11a and the pair of sidewall parts 11b of the groove 11 of the base member 10, and the block member 20.SELECTED DRAWING: Figure 4

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