Ventilation system for cooking appliance

A cooking appliance comprising:

• an upper housing that defines an upper heating cavity;
• a lower housing that defines a lower heating cavity;
• an outer cooling path that extends around at least a portion of the upper and lower housings to an air outlet;
• upper and lower blowers that operate to selectively move cooling air through the outer cooling path;
• a ventilation channel at least partially disposed within the outer cooling path, the ventilation channel extending from a first vent aperture defined within the upper heating cavity to a downstream location of the outer cooling path;
• wherein
• operation of at least the lower blower contemporaneously moves the cooling air through the outer cooling path and moves upper cavity air from the upper heating cavity and to a narrowed section that defines a first low-pressure space proximate the lower blower;
• the cooling air and the upper cavity air combine proximate the first low-pressure space;
• a second vent aperture extends through the lower housing between the lower heating cavity and a portion of the outer cooling path.

A cooking appliance comprising:

• an upper housing that defines an upper heating cavity and includes a first vent aperture;
• a lower housing that defines a lower heating cavity and incudes a second vent aperture disposed within a top wall of the lower housing;
• an outer cooling path that extends around at least a portion of the upper and lower housings to an air outlet;
• a blower that operates to selectively move cooling air through the outer cooling path;
• a first ventilation channel at least partially disposed within the outer cooling path and extending from the first vent aperture to a narrowed transition that defines an air acceleration section that is downstream of the first vent aperture;
• a second ventilation channel that extends from the second vent aperture to the air acceleration section;
• wherein
• operation of the blower contemporaneously moves the cooling air through the outer cooling path and moves upper cavity air from the upper heating cavity and lower cavity air from the lower heating cavity to the air acceleration section;
• operation of the blower further directs the cooling air, the upper cavity air and the lower cavity air to a tapered lower end of the outer cooling path that defines a low-pressure space proximate the air outlet.