| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling shed achieving quickly a preset temperature of a cooling space after finishing defrosting operation. SOLUTION: A control device 30 controls selector valves 35, 45 when executing defrosting operation control using a heater 80 for heating an evaporator 50 during defrosting operation. Thereby, refrigerant is circulated only in part of a loop pipe 300 and a bypass pipe 42 between the evaporator 50 and a cold storage material 41. At this time, the refrigerant is not circulated between a condenser 112 on the low temperature side of a Stirling refrigerator 40 and the evaporator 50, and so the condenser 112 is free from warm-up. This improves the efficiency of the defrosting operation and permits early start of cooling a freezing chamber 95 and a refrigerating chamber 90. COPYRIGHT: (C)2006,JPO&NCIPI
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