| 摘要 |
In the present invention, an air conditioner that uses R32 refrigerant is equipped with opening degree control for an expansion valve that is capable of stably controlling the temperature of refrigerant discharged from a compressor. An air conditioner (10) is provided with: a refrigerant circuit (11) in which a compressor (12), an outdoor heat exchanger (14), an expansion valve (15), and an indoor heat exchanger (16) are connected and HFC32 circulates as a refrigerant; and a control unit (30) that performs opening degree control at each predetermined sampling time (t) in order to change the opening degree of the expansion valve (15) by a predetermined amount so that the discharge pipe temperature (Tp) of the compressor (12) becomes a target discharge pipe temperature (Tpa). The sampling time (t) is longer when the opening degree of the expansion valve (15) is in a range that is less than a predetermined value than when in a range that is equal to or greater than the predetermined value. |
