The invention discloses a single-tank fused salt heat
storage type electric boiler capable of exchanging heat with a heat tube as well as a heat exchange method. The single-tank fused salt heat
storage type electric boiler comprises a fused salt heat
storage tank, an electric heater and a
heat exchanger, wherein the electric heater and the
heat exchanger are mounted on the top of the fused salt heat
storage tank in a
flange connecting mode; a stirrer is further mounted on the center position of the top of the fused salt heat
storage tank; the electric heater and the
heat exchanger are separately arranged at the two sides of the stirrer; and the fused salt heat storage tank and the heat exchanger are separated by a partition. According to the single-tank fused salt heat
storage type electric boiler capable of exchanging heat with the heat tube, flow of heat exchange fluid and outlet temperature are stable by regulating rotation speed of a three-way mixing valve or a stirrer, and a control method is simple and reliable; a valley-
electricity heating technology and a single-tank fused salt heat storage technology are adopted, a fused salt pump and a fused salt pipeline are cancelled, and the heat tube exchanger and the electric heater are internally arranged, so that a fused salt heat storage
system is greatly simplified, and flow of the heat exchange fluid and the outlet temperature are stable; and the single-tank fused salt heat storage type electric boiler has the remarkable advantages of a compact structure, low cost, fused salt freezing-blocking resistance and the like, can replace various
coal-fired boilers which output hot water, hot oil and steam, and relieves the increasingly serious environmental
pollution problem.