Water heater with completely and thoroughly separated water and electricity

The invention discloses a water heater with completely and thoroughly separated water and electricity, which adopts an electrical heated pipe or an electromagnetic induction coil as a heating component to ensure the two faces or circumference of a water tank to be heated. The water tank adopts metal pipe materials to wind in a spiral manner; one end is a water inlet pipe, the other end is a wateroutlet pipe and the middle part is provided with a leaning long-shaped or round space for placing electric heating components; the water tank can be integrated into a whole with two box bodies manufactured by tamping and welding sheets or integral shaped through a water tank connecting pipe; the heating area is large and the heating efficiency is high; the electric heating components are completely and thoroughly separated from water and metal parts with no potential safety hazard and can successively supply water in real time, not only keep the advantages of the existing various water heaters, but also overcome all the defects.