| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating system capable of optimally operating corresponding to a capacity with varying load capacity by changing the operation capacity by inverter-controlling a small capacity compressor between two different capacity scroll compressors and changing the revolutions of the compressor and the operation number of the compressors. SOLUTION: By providing a control means for detecting a low pressure corresponding to a load with a suction pressure sensor 6 and processing it with a controller 7 to change the revolutions of scroll compressors 1a, 1b and the operation number of the same, hereby, the capacity change width at the time of controlling the number of machines of refrigerating apparatuses in each of which two different capacity compressors are combined, can be reduced.
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