Preheat system for convection cooking appliance
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United States of America Patent
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Oct 29, 2002
Grant Date -
Jun 6, 2002
app pub date -
Jan 30, 2002
filing date -
Sep 13, 1999
priority date (Note) -
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Abstract
A preheat system for a convection cooking appliance functions to control the operation of multiple heating units, the heating of a catalyst, and the speed of a blower assembly of the appliance to effectively eliminate grease, oils, and other hydrocarbon compounds from prior cooking operations, while also minimizing the generation of any appreciable amount of smoke. Additionally, the blower assembly is controlled to establish a negative pressure differential in the oven cavity upon opening of an oven door in order to assure that any smoke, as well as additional amount of oxygen for enhancing combustion, will be drawn into the oven cavity. The preheat system is particularly adapted to clean the oven cavity prior to a cooking operation and between self-cleaning cycles.
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