Electric heating device, has resistive surface provided with resistive circuit, where resistance value of bottom part of resistive surface is greater than that of top part of resistive surface

摘要

The device (1) has a resistive surface (2) i.e. planar surface, vertically arranged with a thermal conductive plate (3) for generating resistive heat, where the thermal conductive plate is provided with a set of channels (4). A resistance value of a bottom part of the resistive surface is greater than that of a top part of the resistive surface. The resistive surface is provided with a resistive circuit.