| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchanger for reducing a dead water area on a rear flow side of a heat transfer tube, reducing ventilation resistance, and improving the heat exchanging efficiency, easy to be manufactured, and capable of reducing cost, its manufacturing method, and an air-conditioning/refrigerating device using the heat exchanger. Ž<P>SOLUTION: The heat exchanger is equipped with a plurality of tabular fins 11 laminated at predetermined intervals for letting air flow in between, a plurality of flat heat transfer tubes 15 inserted between these fins 11 along an air stream direction and having refrigerant flowing inside, and headers mounted to both end parts of the heat transfer tubes 15. The flat heat transfer tube 15 in its minor axis direction is formed to become gradually narrower toward the downstream side of the air-stream direction. A plurality of nearly L-shaped partition walls 17 which become convex toward the downstream side are provided at nearly equal intervals in the major axis direction inside the heat transfer tube 15. A plurality of refrigerant flow passages 18 are formed by the partition walls 17. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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