CURRENT CONTROL METHOD OF ELECTRIC HEATING DEVICE AND ELECTRIC HEATING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a control method of an electric heating device with extremely high safety having a heating element formed by winding a secondary heating conductor around a first heating conductor through an insulation layer, capable of quickly detecting a short-circuit between the first heating conductor and the second heating conductor, and stopping current supply upon the detected short-circuit.;SOLUTION: On the electric heating device provided with the first heating conductor 12 wound on a core wire 11, the second heating conductor 14 wound around the first heating conductor 12 through an insulation layer 13, and the heating element 10 formed so as to have a temperature detecting conductor 16 wound around the second conductor 14 through a fusion layer 15, a current flowing through a connection part on the other end side of the first heating conductor 12 and the second heating conductor 14 is detected, and heat generations at the first heating conductor 12 and the second heating conductor 14 are controlled by controlling the current supplied to the first heating conductor 12 and the second heating conductor 14 in accordance with the change of the detected current.;COPYRIGHT: (C)2006,JPO&NCIPI