| 摘要 |
A heat exchanger has a tank communicated with tubes at longitudinal-direction ends of the tubes. A first plate member of the tank has a core plate portion connected with the tubes and two side wall portions facing each other, which are constructed of a metal plate material. The second plate member of the tank has an opposite wall portion facing the core plate portion and two cap portions facing each other, which are constructed of a metal plate material. The core plate portion has a protrusion-shaped cross section in the longitudinal direction of the tubes. The first plate member and the second plate member are integrated by brazing. An inner surface of one of the plate members contacts an end surface of other of the plate members, and a fillet is formed between an extension portion of the one plate member and a shear droop of the other plate member.
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