JPS57174627A - Automatic temperature control combustor - Google Patents

Abstract

PURPOSE:To improve easiness of using and plan to improve the controlling properties for the control of the amount of gas as well as the temperature of cooking materials by a constitution wherein a temperature range to open and close a gas electronic proportional valve is made variable in a specified plurality of temperature zones, in the automatic temperature control combustor such as a gas cooking stove or the like. CONSTITUTION:In case a setting temperature is set at 100 deg.C, combustion and heating is continued to a temperature which is 2 deg.C lower than the set temperature being set in an initial full open holding circuit 25 at the maximum consuming amount the gas electronic proportional valve 26, which is indicated by a maximun limit circuit 29, under detecting a voltage difference between a senser 8 and the set temperature of a temperature knob 15 by a temperature detecting circuit 24 until the temperature of water has become 98 deg.C and the temperature of the senser 8 has become 101 deg.C. Subsequently, the heating is continued until the set temperature at a proper amount between the maximum limit circuit 29, determined by an electronic proportional valve driving circuit 28, and the amount of gas indicated by a minimum limit circuit 30. Thereafter, the closing of the electronic valve 34 and the ro-operation of an ignition driving circuit 38 are repeated within a predetermined temperature range. Thus, the easiness of using, the gas sonsumption amount and the controlling properties for the temperature of the cooking materials may be improved.