A domestic cooker has a plenum chamber positioned to the rear of its oven cavity. Air is pump into the chamber by a fan which draws air around the outside of the cavity. Air exits from the chamber to atmosphere via a duct above the oven cavity having first passed over the cooker control panel to keep...http://www.google.fr/patents/US5193520?utm_source=gb-gplus-shareBrevet US5193520 - Cooking apparatus
