Patent ID: 6376812
Filing Date: 2002-04-23
Classification: H05B

Abstract:
A cooking appliance comprising a heating unit heating an object to be heated, a heating chamber containing the object to be heated, and an infrared sensor having a field of view within said heating chamber and detecting an amount of infrared radiation within said field of view, said cooking appliance further comprising:a field of view moving unit moving the field of view of said infrared sensor; and a temperature detecting unit detecting a temperature of an object within said field of view based on a detection output of said infrared sensor; wherein said field of view moving unit executes a first movement control moving said field of view by a predetermined pattern within said heating chamber simultaneously with or after a start of a heating operation of said heating unit; fixes said field of view at a predetermined position, said predetermined position being one of a position having a temperature difference relative to a periphery equal to or higher than a predetermined value within said heating chamber, and a position having a largest temperature difference relative to the periphery within said heating chamber, in a detection temperature of said temperature detecting unit in said first movement control; and again executes a second movement control moving said field of view within said heating chamber based on satisfaction of a predetermined condition, after fixation of said field of view at said predetermined position.