| 摘要 |
An air conditioner includes a refrigeration circuit and a top-flow type outdoor unit 51, the refrigeration circuit having a compressor 1, an outdoor heat exchanger 3, a decompression valve 22, and an indoor heat exchanger 6. The outdoor heat exchanger is provided in the top-flow type outdoor unit, the outdoor heat exchanger has three or more heat exchange sections, the outdoor heat exchanger includes, on each of the three or more heat exchange sections, a liquid-side header pipe, a gas-side header pipe, and a plurality of heat exchange pipes, the three or more heat exchange sections are connected in parallel to one another, a plurality of the liquid-side header pipes are connected to a liquid-side collecting pipe through an intermediation of a branch section and at least one flow control section, each of the plurality of the liquid-side header pipes includes a perforated pipe, the refrigeration circuit further includes a bypass pipe for connecting a discharge side of the compressor and the liquid-side collecting pipe, and the bypass pipe includes an on-off valve to be closed during cooling and heating, and to be opened during defrosting. |
