| 摘要 |
PROBLEM TO BE SOLVED: To provide a defrosting control device in which a completion time of defrosting operation is made to be most appropriate one during hot gas defrosting operation, defrosting of an evaporator is performed positively and at the same time an increasing in temperature of a freezer is restricted minimum. SOLUTION: A defrosting control device is comprised of a temperature measuring means 31 for measuring a temperature related to a temperature of refrigerant at an outlet of an evaporator 12, and an electrical resistance variable means 32 in which an electrical resistance value is varied due to adhesion of frost at the evaporator 12. After starting the hot gas defrosting operation, a temperature related to the temperature of refrigerant at the outlet becomes more than a predetermined temperature and when the electrical resistance value becomes a predetermined resistance value, the hot gas defrosting operation is released.
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