Abstract: A bidirectional flow system for a cooking oven in accordance with one embodiment of the present disclosure includes an oven chamber having a first cooking zone in fluid communication with a second cooking zone, the oven chamber having at least a floor, a ceiling, and a mezzanine for dividing the first and second cooking zones; a gas circulation system for supplying gaseous cooking medium initially to either of the first or second cooking zone; and a return assembly for receiving returned gaseous cooking medium, wherein the return assembly includes a plurality of louvers movable between a first position and second position to receive returned gaseous cooking medium from the other of the first or second cooking zone. Systems and methods for adjusting cooking zones in an oven are also provided.

Abstract: A cooking system having adjustable oven cooking zones generally includes a spiral stack disposed within a cooking oven chamber, the spiral stack including a plurality of tiers, and a circulation system for delivering gaseous cooking medium to the spiral stack in the cooking oven chamber. The system further includes a mezzanine assembly including an inner mezzanine and an outer mezzanine, wherein the position of the inner mezzanine is movable relative to the position of the outer mezzanine. Methods for adjusting cooking zones in an oven, and systems and methods for bidirectional flow systems for cooking ovens, are also provided.