Heat pump

A heat pump comprising a device for heating by absorbing latent heat of solidification of water, the device comprising a compressor, a condenser and evaporators connected in parallel, wherein the evaporators respectively have inlets and outlets, each of the evaporators has an electronic expansion valve at the corresponding inlet and a solenoid valve at the corresponding outlet;

• after the evaporators are connected in parallel, the outlets of the evaporators are connected to an inlet of the compressor and the inlets of the evaporators are connected to an outlet of the condenser;
• an outlet of the compressor is connected to an inlet of the condenser;
• the compressor, the condenser and the evaporators form a closed loop system through pipelines;
• there are circulating refrigerants in the closed loop system, and heating and deicing processes are realized through a circulation of the refrigerants;
• the solenoid valve at the outlet of each of the evaporators is switched between opening or closing to realize switching between evaporating and deicing functions of each of the evaporators, wherein the heat pump comprises a housing, the evaporators are joined to each other to form an outer surface of the heat pump, and the heat pump uses the outer surface to exchange heat with external water;
• the outer surface is integrated with the housing of the heat pump to wrap the heat pump;
• the condenser inside the heat pump is provided with water outflow and inflow pipelines to circulate with an external water flow.