| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrugated fin suitably arranged between facing plate parts. SOLUTION: In the fin 60 of corrugated cross section, a top part 62A of a fin end part (a cut part) 61 out of top parts 62, 62 of corrugated shape is provided with a small curve part 63 receding toward the opposite side to the contact side with the plate part 41a. A burr 64 formed at the fin end part (the cut part) 61 in a manufacturing process of the fin 60 (a cutting process of a corrugated metal plate 60B) is thereby reduced in projecting quantity from the amplitude range H of corrugation because of the recess of the small curve part 63. In the state of clamping the fin 60 between the facing plate parts 41a, 41a, the amount of interference between the burr 64 and the plate part 41a is thereby reduced or eliminated. As a result, the joined state of the fin 60 and plate part 41a is improved. COPYRIGHT: (C)2006,JPO&NCIPI
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