Appliance with a vacuum-based reverse airflow cooling system

An appliance comprising:

• a main body defining a first cavity, a second cavity adjacent to the first cavity, and an air channel which is in flow communication with an outside of the appliance;
• a first access door attached to the main body for selectively closing the first cavity, the first access door having a first airway in flow communication with the outside of the appliance and the air channel;
• a second access door attached to the main body for selectively closing the second cavity, the second access door having a second airway in flow communication with the outside of the appliance and the air channel;
• a sealing wiper disposed between the first access door and the second access door when the first access door and the second access door close the first cavity and the second cavity, respectively;
• and
• a fan disposed in the air channel,
• wherein when activated, the fan causes ambient air from outside of the appliance to pass through the first airway and the second airway before entering the air channel so that the first and second access doors are cooled by the ambient air.

An appliance comprising:

• a cabinet having a top, a bottom, opposing sides, a back, an open front, upper and lower oven cavities, and upper and lower access doors for selectively closing the respective upper and lower oven cavities, the upper access door having a lower edge and the lower access door having an upper edge, the lower and upper edges defining a space therebetween, the cabinet defining:
• a first air flow channel disposed between the top and the back and the upper and lower oven cavities, the first air flow channel having a first air inlet;
• a center air channel between the upper and lower oven cavities and in flow communication with the first air flow channel;
• an internal airway in each of the upper and lower access doors, each internal airway having a second air inlet and an air outlet which is in flow communication with the center air channel;
• and
• a lower air channel extending back to front beneath the lower oven cavity and in flow communication with the first air flow channel;
• and
• a sealing wiper disposed to span the space between the lower and upper edges when the upper and lower access doors are in closed positions to limit ambient air entering the center air channel;
• and
• a fan disposed proximate a back portion of the appliance, the fan being configured to create negative pressure to pull ambient air through the first and second air inlets and the internal airways of the upper and lower access doors and force air through the lower air channel to the exterior of the appliance so that the upper and lower access doors are cooled by the ambient air.