| 摘要 |
PROBLEM TO BE SOLVED: To provide an economical refrigerating cycle device of high reliability by preventing degradation of operational efficiency caused by frost formation on an evaporation-side heat exchanger when an operation is performed under a low-temperature environment. SOLUTION: This refrigerating cycle device capable of switching a normal operation and a defrosting operation by a four-way valve, is provided with a constant torque control mode for controlling the torque of a motor of an outdoor or indoor air blower constant at a prescribed torque value, or a constant electric current control mode for controlling electric current of the motor of the outdoor or indoor air blower constant at a prescribed electric current value, and the evaporator-side air blower as the air blower at a heat exchanger side operated as the evaporator of the refrigerating cycle in the normal operation is operated in the constant torque control mode or the constant electric current control mode, when the normal operation is operated under a low temperature environment requiring a defrost operation. COPYRIGHT: (C)2009,JPO&INPIT
|
