Humidity flushing system

A kitchen appliance comprising a cooking cavity and a cooling chamber, the cooking cavity having an outlet opening in an upper wall thereof and an inlet opening in another wall thereof, said outlet opening being in fluid communication with an underpressure region of said cooling chamber via a first flow path having a first valve and said inlet opening being in fluid communication with an overpressure region of said cooling chamber via a second flow path having a second valve, said second flow path having a smaller cross-section than said first flow path, a cooling fan disposed in said cooling chamber and effective to generate an underpressure in said underpressure region and an overpressure in said overpressure region, said cooling fan being further effective to generate a flow of cooling air for the appliance, a controller operatively coupled to each of said first and second valves and configured to operate them so that:

• in a first mode the first valve is opened and the second valve is closed thus allowing pressurized steam and/or vapor in said cooking cavity to be exhausted therefrom into said cooling chamber;
• in a second mode both the first and second valves are closed thereby maintaining in said cooking cavity the steam and/or vapor therein;
• and
• in a third mode both the first and second valves are opened thereby flushing said cooking cavity by exhausting steam and/or vapor therefrom into said cooling chamber where the steam and/or vapor will be mixed with said flow of cooling air, and introducing dryer and/or cooler air, relative to said steam and/or vapor, into said cooking cavity via said inlet opening.