| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat exchanger capable of appropriately preventing a large quantity of drain water generated to follow heat recovery from stagnating on a bottom wall of a case by simple means.SOLUTION: A heat exchanger HE includes a drain water guide 4 including a horizontal plate portion 40 generally horizontal and located on an upper side of an upper stage portion 22a of a bottom wall 22 of a case 22 containing heat transfer tubes 1. Between the upper stage portion 22a and the horizontal plate portion 40, a capillary gap 5 including a first side surface opening portion 51 that is located on the upper stage portion 22a and through which drain water in contact with an edge of the horizontal plate portion 40 can be attracted inside is formed. This capillary gap 5 also includes a second side surface opening 52 opening on an edge 22a' of the upper stage portion 22a so that the drain water attracted inside can flow down from the upper stage portion 22a toward a lower stage portion 22b.</p> |
