The HF induction heating device adopts the principle of magnetic field induction eddy current heating. The magnetic field is generated by the current passing through the coil. When the magnetic line of force in the magnetic field passes through the metal material, the boiler body itself can generate high-speed heat, and then heat the material, and can reach a satisfactory temperature in a short time. The main advantages of this product are magnetic heating, energy saving, environmental protection, zero emission, unattended, water and electricity separation, pipeline without scaling, no open fire, convenient operation, safe and reliable, durable, clean and environmental protection. It has many advantages, such as anti overheating, no leakage, anti water shortage, anti dry burning, anti undervoltage, anti over voltage, anti freezing, automatic high temperature heat storage when power consumption is low at night, no oil fume, no heat radiation, etc. The high-power radiator controlled by backwater can make full use of the recovered heat source, improve the thermal efficiency and adapt to various harsh environments.