Patent ID: 7886658

Claim:
An oven for cooking a food product by hot gas, comprising: a housing; a cooking chamber disposed within the housing; a thermal means for heating the gas; a gas circulating chamber disposed between the housing and the cooking chamber; a flow means for circulating the gas through the gas circulating chamber, over the thermal means, through the cooking chamber, and back through the gas circulating chamber; and a bypass system for reducing the flow of gas into the cooking chamber, the bypass system comprising: a recirculation aperture disposed in a wall of the gas circulation chamber; a conduit extending from the recirculation aperture to the flow means; a bypass aperture disposed in a wall of the cooking chamber; a single bypass door; and an actuator for selectively actuating the bypass door; wherein the bypass door is operable between a non-bypass mode in which the bypass door seals the conduit, thereby allowing the gas to flow from the cooking chamber to the flow means, and thereby preventing the gas from flowing from the gas circulating chamber to the flow means; and a bypass mode in which the bypass door seals the bypass aperture, thereby allowing the gas to flow from the gas circulating chamber to the flow means, and thereby preventing the gas from flowing from the cooking chamber to the flow means.