PURPOSE: To make common the high temp. display and output display and reduce the space for mounting and also the cost by connecting a temp. sensor circuit and a material-heated sensor circuit to a displaying light emission part.
CONSTITUTION: When a pan of Al, etc., which does not admit induction heating or any other miscellaneous matter for ex. a knife as not object to be heated is placed, a material-heated sensor circuit judges which substance the object consists of on the basis of the current vs. voltage relation within a control circuit 12 generated under induction heating, and the control circuit 12 is turned off if necessary according to the judgement result. Current is supplied to displaying light emission parts 24b, 24c corresponding to an induction heating coil 7, and they twinkle indicating as not suitable for heating. As a cooking plate 6 is hot even after finish of cooking because of residual heat, temp. sensors 22a, 22b, 23 sense the temps. on the cooking plate 6 in the neighborhood of respective heating parts to preclude the user from burn, etc., and when a temp. sensor circuit in the control circuit 12 says that the temp. is over a preset level, current is supplied to the displaying light emission parts 24b, 24c corresponding to the part heated, and they twinkle to make high temp. indication.
NAKAKURA HIROFUMI
MIYAGAWA JUNICHI
OKADA KAZUICHI
