Door cooling system

Claim 1

An oven having a cooking cavity formed by a box-like oven liner and a front-opening access door, heating means for applying heat energy to the cooking cavity, thermal insulating means surrounding the oven liner and also included within the said door for retaining the oven heat within the cooking cavity, an outer oven cabinet surrounding the insulated oven liner, cooling air channels formed within the oven cabinet around the oven liner as well as within the door for reducing the outer surface temperatures of the cabinet and door as room ambient air flows through the air channels, the door having air inlet openings along its bottom edge and air outlet openings along its top edge to create a vertical flow of natural convection air currents, the outer oven cabint having air inlet means for introducing air into the cooling air channels of the cabinet, blower means located in the oven cabinet for producing a forced draft of air in the air channels within the oven cabinet; the invention comprising a Converging exhaust nozzle communicating with the top air channel of the oven cabinet to overlie the top edge of the door and sweep a high velocity curtain of exhaust air over the air outlet openings in the door and thus reduce the static pressure at the air outlet openings of the door so as to asprirate air up through the door for an increased reduction in outer surface temperatures of the door.