Heat pump system

The invention provides a heat pump system. The system is arranged in a bathroom and comprises a first heat exchange device, a compressor, an expansion valve and a second heat exchange device, the first heat exchange device, the compressor, the second heat exchange device and the expansion valve are sequentially connected to form a circulation loop, and a refrigerant circulates in the circulation loop; and the first heat exchange device exchanges heat with hot steam in the bathroom and is used for enabling the refrigerant and the hot steam to conduct evaporation heat exchange. While heating is achieved, the efficiency of the heat pump system can be improved, and the utilization rate of energy in air can be increased. 本发明提供一种热泵系统，设在浴室内，其包括第一换热装置、压缩机、膨胀阀和第二换热装置，第一换热装置、压缩机、第二换热装置和膨胀阀依次连接构成循环回路，循环回路中流通有制冷剂；第一换热装置与浴室内的热蒸汽之间具有热交换，用于使制冷剂和热蒸汽进行蒸发换热。本发明在实现制热的同时，能够提高热泵系统的效率以及空气中能量的利用率。