| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a refrigerating cycle device can accurately estimat the torque of a compressor. Ž<P>SOLUTION: The refrigerating cycle device 1 includes a compressor 2, a capacitor 3, a receiver 4, an expansion valve 5 and an evaporator 6. A differential pressure detecting mechanism 7 is provided between the compressor 2 and the capacitor 3. The differential pressure detecting mechanism 7 is constituted to detect differential pressure across a throttle valve 7 by a differential pressure sensor 72. A high-pressure pressure sensor 31 is provided at an outlet of the capacitor 3. A refrigerant flow rate Rflow is estimated based on the detected output ΔP of the differential sensor 72 and the detected output Ph of the high-pressure pressure sensor 31. The torque of the compressor 2 is estimated based on the refrigerant flow rate Rflow and the intake pressure Ps and discharge pressure Pd of the compressor 2. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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