| 摘要 |
An air conditioner and a refrigerant amount determining method which are able to accurately and simply determine the amount of a refrigerant without impairing the reliability of a compressor. A refrigerant circuit (10) has a compressor (21), an outdoor heat exchanger (23) functioning as a condenser, an indoor expansion valve (41, 51), an indoor heat exchanger (42, 52) functioning as an evaporator, connecting piping (4b, 5b) inside an indoor unit, a liquid refrigerant connecting pipe (6), a gas refrigerant connecting pipe (7), and connecting piping (8) inside an outdoor unit. A controlling section (9) performs liquefying control for causing the refrigerant to be present in a liquid state in a portion extending from the indoor expansion valve (41, 51) to the outdoor heat exchanger (23). The controlling section (9) directly or indirectly controls the flow rate of the refrigerant flowing in a liquid bypass circuit (70) from a liquid pool section (Q) toward the gas refrigerant connecting pipe (7). A liquid surface sensor (39) detects at least either the volume of the liquid refrigerant in a portion where the liquid refrigerant pools or the physical quantity equivalent to the volume. |
