An inserted
intermediate frequency fused salt heater comprises a tubular heating tube fixed seat, a plurality of heating tubes welded and fixed at the lower portion of the tubular heating tube fixed seat, a fixed seat
flange welded at the upper portion of the tubular heating tube fixed seat, leads arranged in heating tubes, a
medium frequency transformer and a medium-frequency power supply, wherein the leads are tightly welded with the bottom ends of the heating tubes, the leads are connected with secondary coils of the
medium frequency transformer, the primary coil of the
medium frequency transformer is connected with the medium-frequency power supply, and the secondary coil of the medium frequency transformer inducts a frequency
high current in a
low voltage; the leads, the heating tubes, the heating tube fixed seat and the secondary common end of the medium frequency transformer are connected to form a loop, each lead is connected with the secondary coil end, eddy is formed on the tube bodies of the heating tubes to perform rapid heating, and the
intermediate frequency intermediate frequency is employed to allow the heating tube to directly heat in the fused salt liquid. The inserted intermediate frequency fused salt heater is high in
heating efficiency, has no potential safety hazards of damaging people caused by electric leakage, and is long in service life, simple in structure, low in cost, convenient to maintain and very safe and reliable in usage.