Patent ID: 7370487

Claim:
A refrigerating cycle device comprising: at least a compressor capable of changing the discharge flow rate; and an evaporator provided on a suction side of the compressor for evaporating a low-pressure refrigerant, wherein: whether or not flow rate of circulating refrigerant is higher than a predetermined threshold value is judged based on an information value relating to the flow rate of the circulating refrigerant in the refrigerating cycle device; when the flow rate of the circulating refrigerant is higher than the predetermined threshold value, discharge flow rate of the compressor is controlled in accordance with a degree of cooling of the evaporator; and on the other hand, when the flow rate of the circulating refrigerant is not higher than the predetermined threshold value, the discharge flow rate of the compressor is controlled so as to intermittently change between a discharge flow rate near the predetermined threshold value and a flow rate of a substantially zero value and compressor operation time during a period of that control is measured and when the compressor operation time exceeds a predetermined time, the compressor is continuously controlled at a discharge flow rate near the predetermined threshold value.