| 摘要 |
PROBLEM TO BE SOLVED: To provide a stack unit having a power card and coolers stacked according to the disclosure of the present invention, the stack unit not having the power card brought into direct contact with a refrigerant and being good in assemblability.SOLUTION: At least one pair of coolers 2 adjoining each other in a stack unit 10 each comprises a main body 20, a first opening 23, a pair of cylinder parts 26, a second opening 22, a first metal plate 35, and a second metal plate 31. The pair of cylinder parts 26 extend in a stacking direction from a first side face 27 on both sides of the first opening 23. The second opening 22 is provided to a body second side face 24 opposed to the other adjacent power card 3a, and large enough to overlap with the first opening 23 and the pair of cylinder parts 26 when viewed from the stacking direction. The first metal plate 35 covers the first opening 23 and the second metal plate 31 covers the second opening 22. The second metal plate 31 is provided with a hole 32 at a position where it overlaps with respective inside spaces (inner hole 21) of the pair of cylinder parts 26 when viewed from the stacking direction.SELECTED DRAWING: Figure 3 |
