The invention relates to a solar-energy auxiliary multifunctional heat pump system, which comprises connected air-conditioning module and composite water heater module. Wherein, the air-conditioning module is formed by serially connected compressor, four-way valve, indoor heat exchanger, first throat element, coil tube heat exchanger, second throat element and outdoor heat exchanger; the composite water heater module is between the first and second throat elements, which comprises a closed support thermal-insulated water bank, a solar-energy collector, a coil tube heat exchanger and the second electromagnetic valve. Said composite water heater module has the functions of heat pump water heater storage pot, and the function of auxiliary steamer. The invention can realize multifunction of air conditioner and water heater to supply the hot water in 50-90Deg. C and confirm the stability of system in winter. |