| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger having a flat tube suppressing change in the shape of the outer periphery caused by a shift of an overlapped section. SOLUTION: The flat tube 10 of the heat exchanger has a curve section 13. At least part of the curve section 13 is constructed by overlapping an outer edge section 22 with the outer side of an inner edge section 21. The inner edge section 21 has a small curve region 102. The small curve region 102 tilts relative to a flat plate section 11 and is defined by a radius greater than a difference between half the thickness d1 of the flat tube 10 and the plate thickness of the outer edge section 22. The small curve section 102 is provided at a position not beyond the center line C1 in the thickness direction of the flat tube 10. The outer edge section 22 extends beyond the center line C1. An end surface 22a of the outer edge section 22 is located in the small curve region 102. COPYRIGHT: (C)2010,JPO&INPIT |
