| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooler of high performance and high defrosting efficiency with respect to a heat exchanger used in a refrigeration and air conditioning device or the like. SOLUTION: In this completely-independent fin tube type heat exchanger which is composed of a number of plate fins 3 arranged in parallel with each other so that airflow flows therebetween, and refrigerant tubes 2 inserted into the plate fins 3 roughly at a right angle to allow a fluid to flow therein, and in which the refrigerant tubes 2 are disposed zigzag to the airflow, and the plate fins 3 are divided by each row to the refrigerant tubes 2, the plate fins 3 are provided with annular ring ribs 3h surrounding penetrating sections of the refrigerant tubes 2, and fin edges 3d intersecting with the airflow at a right angle, of the plate fins 3 have an approximately-waveform shape. Thus, the performance of the heat exchanger 1 can be improved, efficiently performing defrosting operation. COPYRIGHT: (C)2011,JPO&INPIT
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