Patent ID: 7699237

Claim:
A method for controlling the exhaust flow from a cooking chamber of a baking oven, the flow being discharged by a fan, the method comprising the steps: increasing a speed of the fan during a first time interval after a predetermined heat up phase of a cooking process; measuring a first temperature at a first location of the baking oven using a first temperature sensor during the first time interval; measuring a second temperature at a second location of the baking oven using a second temperature sensor at a same time as the measuring of the first temperature during the first time interval; determining a temperature difference between the first temperature and the second temperature using an electronic controller of the baking oven; determining a selected fan speed at which the determined temperature difference varies from an initial temperature difference, the initial temperature difference being the determined temperature difference at the beginning of the first time interval; and setting at least one of the fan speed and a position of a bypass damper during a second time interval as a function of the determined selected fan speed.