Liquid heater for oil, fuel or water, has heating coil embedded in metal block incorporating capillary tube coil with coil windings positioned between coil windings of heating coil

摘要

The liquid heater has at least one heating coil (8) embedded in a metal block (2), e.g. a brass block, the liquid fed through a capillary tube coil (9) incorporated in the metal block, with its coil windings positioned between the coil windings of the heating coil. The metal block has an axial bore (3) with an outer diameter of slightly less than the inner diameter of the heating coil and/or the capillary tube coil.