| 摘要 |
PURPOSE: An evaporation heat exchanger of a refrigerator is provided to manufacture a heat exchanger efficiently. CONSTITUTION: An evaporation heat exchanger is composed of two refrigerant tubes(51,52), and cooling fins(53) integrally formed to contact to the refrigerant tubes and arranged between the refrigerant tubes. A defrosting heater(53) is placed in the lower part of the evaporation heat exchanger to defrost a surface of the heat exchanger by radiant heat. The two refrigerant tubes and the cooling fins are integrally formed with extrusion molding. Louvers are formed on the cooling fins by punching to ventilate. The louver consists of a hole(53a) and a louver fin(53b) bent to guide air through the hole. The defrosting heater radiates in defrosting at the lower part of the evaporation heat exchanger.
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