| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger capable of reducing its weight and cost while ensuring the sufficient pressure resistance of an inlet header. SOLUTION: A gas cooler 1 is provided with a pair of header tanks 2, 3 and a plurality of heat exchange pipes 4 arranged in parallel between both header tanks 2 and 3 and having both ends connected with both the header tanks 2, 3, respectively. Each header tank 2, 3 is constituted by stacking an outer side plate 7, an inner side plate 8, and an intermediate plate 9 and brazing them. The first header tank 2 is provided with the inlet header 10A and an outlet header (10B). The outer side plate 7 of the first header tank 2 is divided into an inlet header constitution 7A and an outlet header constitution 7B. Wall thicknesses of both of header constitutions 7A, 7B are the same. The strength of a heat exchanger use temperature zone of a material forming the inlet header constitution 7A is made to be higher than the strength of a heat exchanger use temperature zone of a material forming the outlet header constitution 7B by 10 to 50%. COPYRIGHT: (C)2007,JPO&INPIT
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