| 摘要 |
An air conditioner is provided with: a refrigeration circuit that includes a compressor (1), an outdoor heat exchanger (3), a reduction valve (22), and an indoor heat exchanger (6); and a top-flow outdoor unit (51). The outdoor heat exchanger is provided to the top-flow outdoor unit, and has three or more heat-exchange surfaces individually having a liquid-side header pipe, a gas-side header pipe, and a plurality of heat-exchange pipes, the heat-exchange surfaces being serially connected. The plurality of liquid-side header pipes are connected to a liquid-side collection tube via a flow-dividing part and at least one flow adjustment part, each of the liquid-side header pipes having a perforated tube. A bypass tube connecting the discharge side of the compressor and the liquid-side collection tube is included in the refrigeration circuit, the bypass tube being provided with an opening and closing valve that is closed during cooling and heating, and opened during defrosting. |
