Improved Design of Defrosting System for Frost-free Refrigerator-freezers Evaporator

Based on the defrosting principles of frost-free refrigerator-freezers evaporator, this paper presented improved design scheme of defrosting system, including aluminum tube conducting defroster being converted into quartz tube radiating defroster and removing thermostat holddown groove. By comparing the new design with the original,it was proved that the improved design is feasible. The analyzed results of feasibility were shown that the reliability of refrigerator -freezers using new system is improved and economical efficiency will be remarkably enhanced.