| 摘要 |
<p>Disclosed are a heat pump with a defrosting structure and a defrosting method thereof. The heat pump with a defrosting structure comprises: a compressor (1), an indoor heat exchanger (8), at least two outdoor heat exchangers (31, 32), a trunk line throttling device (6) and a trunk line guide device (7). A reversing valve (21, 22), a branch line throttling device (41, 42) and a branch line guide device (51, 52) are respectively arranged on a refrigerant circulating branch line where each outdoor heat exchanger (31, 32) is located. The branch line throttling devices (41, 42) are connected to the branch line guide devices (51, 52) in parallel. According to the heat pump with a defrosting structure and the defrosting method thereof, one or more of the outdoor heat exchangers (31, 32) can be defrosted separately without affecting heat generation of other outdoor heat exchangers (31, 32) by the aid of the reversing valve (21, 22), the branch line throttling device (41, 42) and the branch line guide device (51, 52) on each circulating branch line, ambient temperature drop due to defrosting can be effectively prevented, and heating performance of the heat pump is also improved. In addition, a distribution device (9) and a temperature control module are added, so that heating efficiency of the heat pump is improved greatly, and energy consumption is reduced.</p> |
