| 摘要 |
PROBLEM TO BE SOLVED: To improve the heat radiating performance by bringing out the heat radiation quantity from a fin to the full. SOLUTION: In the heat exchanger 11 capable of passing air along a fin 13 provided between a number of tubes 12, the fin 13 comprises a plurality of upwind louver groups 14 and 15 provided on the upwind side and having louvers 19 and 20 inclined in a predetermined direction to the passing direction of air, which are formed thereon at predetermined intervals, a downwind louver group 16 provided on the downwind side and having louvers 21 inclined at a predetermined direction to the passing direction of air, which are formed thereon at predetermined intervals, and return louvers 17 and 19 formed between the upwind louver groups 14 and 15 and between the upwind louver group 15 and the downwind louver group 16, respectively. The inclining directions of the respective louvers 19, 20 and 21 of the louver group 14, 15 and 16 are opposed with each return louver 17, 18 as the border. COPYRIGHT: (C)2005,JPO&NCIPI
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