JPS6429224A - Control apparatus of electric pot - Google Patents

Abstract

PURPOSE: To prevent the occurrence of malfunction due to liquid color, detect a liquid amount via a low cost configuration and prevent the burning of a vessel due to overheat by providing the first to the third thermosensitive elements respectively on the side and the bottom of the vessel. CONSTITUTION: Liquid is poured into a vessel 11 and heated with a heating body 17. The first thermosensitive element 13 laid in the steam passage of the vessel 11 detects the boiling of the liquid and the second thermosensitive element 15 on the side of the vessel 11 detects liquid temperature. A third thermosensitive element 16 laid on the bottom of the vessel 11 detects a liquid volume. In addition, a control circuit part 18 has a liquid volume detection part for detecting the temperature rise variation of the third element 16 and judging the liquid volume, a temperature detection part for outputting a detection signal, upon the rise of the temperature of the elements 13 and 15 to the prescribed levels, and a control circuit for controlling the supply of power to the heating body 17 in response to the temperature and water volume. Also, a display part 19 gives an indication in response to the abnormal state of a temperature rise, and liquid temperature and volume in the vessel via light and/or a sound.