Patent ID: 6392204
Filing Date: 2002-05-21
Classification: F24C

Abstract:
An oven capable of being operated in a self-cleaning cycle, comprising:a cooking chamber; a heating device for supplying heat into the cooking chamber; an exhaust flue extending from the cooking chamber leading to atmosphere; a heat control device for controlling the operation of the heating device; an input device for signaling the heat control device to initiate the self-cleaning cycle; a gas sensor communicating with the exhaust flue for measuring a concentration of a gas component produced from combustion of food soils within the cooking chamber and having a signal output indicative of the measured concentration of the gas component during the self-cleaning cycle; and the heat control device operable to receive successive gas concentration signals output from the gas sensor, to determine a gas concentration versus time curve, to calculate a gas concentration area representing the area under the gas concentration curve, and to terminate the self-cleaning cycle in correspondence with the gas concentration area.