| 摘要 |
A header tank for a heat exchanger has a core plate (21), a tank body (22), and a seal member (23). The core plate has a tube joint section (211) and an annular housing groove (212) which houses the seal member and the front end of the tank body. The seal member is housed within a housing space (21a) formed by the inner peripheral surface of the housing groove and the surface of the front end of the tank body, the surface facing the core plate. The housing groove has a bottom wall (212a) for gripping, along with the front end of the tank body, the seal member; and an outer wall (212b) raised on the outer peripheral side of the bottom wall. The outer wall is provided with at least one discharge section (215a-215c) for discharging liquid having entered a gap (C) formed between a side surface (221c) of the tank body, the side surface (221c) facing the outer wall, the at least one discharge section (215a-215c) being located at the lower portion of the outer wall in the direction in which tubes are stacked. |
