| 摘要 |
PROBLEM TO BE SOLVED: To overcome a problem in which an increased load or a decreased load is accommodated by repeating an operation and a stopping in operation of a compressor due to the fact that the compressor used in an integral freezer of the prior art freezing and refrigeration integral type keeps a constant output and an efficiency of the freezer is kept low due to the fact that a load of a show case for a refrigeration, in particular, is substantially changed and the operation is performed also in the case of low load of the compressor having a high output corresponding to a requisite maximum load is low. SOLUTION: In the case of freezing cycle for a refrigeration, two rotary compressors are applied and the number of operating compressor is controlled in response to a requisite capability, resulting in that an efficient operation of the freezer can be carried out in correspondence with the cooling load.
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