| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat exchanger comprising a serpentine-type continuous refrigerant tube of high reliability and low costs, and ensuring even temperature in defrosting. SOLUTION: A defrosting pipe heater 5 is disposed on a lower face of a dog bone-type heat exchanger having the serpentine tube-shape formed by continuously bending an aluminum refrigerant tube 2 difficult in its bonding, and so-called perforating processing is performed by intermittently forming heat shield holes 8 on plate fins 4, thus the even temperature in defrosting can be ensured while having reliability and cost advantages. COPYRIGHT: (C)2009,JPO&INPIT
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