Directly-heated type double-source heat pump water heater and control method thereof
A dual-source heat pump and direct heating technology, applied in fluid heaters, lighting and heating equipment, etc., can solve the problems of low utilization rate of equipment, short working hours of units, and heating capacity exceeding demand, so as to reduce the initial investment cost, Save the heating time of the heat pump and prolong the heating time
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[0048] In order to better understand the above technical solutions of the present invention, a further detailed description will be given below in conjunction with the drawings and embodiments. figure 1 It is an embodiment of the direct heating type dual-source heat pump water heater of the present invention, including a direct heating type frequency conversion heat pump 100, a solar water heater 200, a hot water storage tank 300, a supplementary water flow adjustment element 400 and a control device 500. The direct heating type The thermal frequency conversion heat pump 100 includes a water exchange pipeline composed of a water inlet solenoid valve 110 and a condenser 120 connected in series. The hot water outlet of the frequency conversion heat pump 100; figure 1 A well-known refrigerant circuit including a compressor is omitted. The heat collecting pipe 210 of the solar water heater 200 has a low-end water inlet and high-end water outlet structure, the water inlet pipeline...
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