Using a specially designed flat-plate collector/ evaporator with finned tubes, it may switch its operating modes among solar heat pump mode, solar and air multi-source heat pump mode, and air-source heat pump mode at various weather conditions for water heating. 该装置通过使用独特设计的螺旋翅片蒸发管的平板型集热/蒸发器,可以在不同的天气情况下切换运行太阳能热源热泵模式、太阳能与空气双热源热泵模式和空气源热泵模式,制取生活热水。