Patent attributes
A refrigeration cycle apparatus Including a refrigerant circuit configured to circulate refrigerant to a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger, the compressor being connected to the indoor heat exchanger by a gas extension pipe, the expansion valve being connected to the outdoor heat exchanger by a liquid extension pipe; pressure sensors and temperature sensors to detect an operating state amount of the refrigerant circuit; and a controller to execute refrigerant-leakage detection operation of detecting refrigerant leakage by calculating a refrigerant amount in the refrigerant circuit based on the operating state amount detected by the pressure sensors and the temperature sensors, and comparing the calculated refrigerant amount with a reference refrigerant amount. The controller controls a quality of the refrigerant at an outlet of the liquid extension pipe to be in a range from 0.1 to 0.7 in the refrigerant-leakage detection operation.
