| 摘要 |
PROBLEM TO BE SOLVED: To prevent power loss or durability degradation which causes a problem when a refrigerant is recovered by operating (pumping down) a compressor while being prevented from flowing into an evaporator in a freezer-refrigerator and the like having a plurality of evaporators different in evaporating temperature for refrigerating cycles performed by alternately using them. SOLUTION: It is possible to alleviate the problem of power loss or durability degradation caused by pumping down by employing a control method of cooling a freezing chamber 3 with first priority in every possible condition, changing the refrigerating cycles after the temperature of evaporation at the time of cooling the freezing chamber 3 becomes lower than that at the time of cooling a refrigerating chamber 2 and performing pumping down only immediately before changing over from a freezing chamber refrigerating cycle to a refrigerating chamber refrigerating cycle.
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