| 摘要 |
Disclosed is an air-conditioning system with a defrosting function, comprising a compressor (1), a four-way directional control valve (2), an outdoor heat exchanger (3), a first throttling device (4) and an indoor heat exchanger (5), wherein the system further comprises a by-pass pipeline (6), a heat accumulator (7) and a control valve; the by-pass pipeline (6) is connected between a first end of the outdoor heat exchanger (3) and an air suction port of the compressor (1); the heat accumulator (7) comprises a first heat exchange pipe (7a) and a second heat exchange pipe (7b), the first heat exchange pipe (7a) being connected in series in a pipeline between an exhaust port of the compressor (1) and a first end of the indoor heat exchanger (5), and the second heat exchange pipe (7b) being connected in series in the by-pass pipeline (6); and the control valve is used for controlling a refrigerant to flow back to the air suction port of the compressor via the pipeline between the first end of the outdoor heat exchanger (3) and the air suction port of the compressor (1) or via the by-pass pipeline (6). The air-conditioning system has high defrosting speed and short defrosting time, can ensure the comfortability in use for a user, and can also avoid the adverse impact of defrosting on the compressor. |
