Cooking oven having function to automatically clean soils...

Details Cooking oven having function to automatically clean soils... Cooking oven having function to automatically clean soils...

F - Mech Eng,Light,Heat,Weapons

24

C

309/69.1

F24C 14/00 (2006.01)

Patent

CA 1299629

ABSTRACT OF THE DISCLOSURE A self-cleaning type cooking oven with a cooking chamber which has a function to pyrolytically eliminate food soils accumulated on walls of the cooking chamber. The cooking oven includes a heater for supplying heat into the cooking chamber so as to allow to pyrolytically degrade the food soils and an exhausting passage coupled to the cooking chamber to exhaust gases generated due to the pyrolytical degradation to an ambient atmosphere. In the exhausting passage is provided an oxidizing catalyst which oxidizes the gases introduced thereinto for exhausting and also provided a gas sensor to detect a gas component therearound. Also included in the cooking oven is a heat control unit electrically connected to the heater for controlling heat supply into the cooking chamber, the heat control unit being responsive to a gas signal therefrom to determine a heating time period for chamber cleaning. With the temperature of the cooking chamber being kept at a predetermined cleaning temperature, the heat control unit samples the gas signal at a given time interval to detect a variation of amount of the gas component and detect an inflection point from decreasing to increasing or vice versa in the gas-component variation to determine the heating time period in conjunction with the inflection point, the food soils being substantially degraded by heating during the heating time period.

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