Patent ID: 7264467

Claim:
A convection oven having side walls, a top, and a bottom defining an interior of the oven, with enhanced air flow through a heat transfer zone in the interior of the oven, comprising: (a) at least one air supply nozzle positioned for directing a supply air flow therefrom toward the interior of the oven; (b) at least one air entrainment and mixing section having an open first end and an open second end and positioned adjacent to the at least one air supply nozzle such that the supply air flow is directed into the open first end of the air entrainment and mixing section and such that the open first end of the air entrainment and mixing section is in fluid communication with the interior of the oven to entrain air from the interior of the oven through the open first end of the air entrainment and mixing section when the at least one air supply nozzle directs the supply air flow therethrough and to direct mixed supply air and entrained air into the interior of the oven from the open second end thereof; (c) an air supply duct coupled to the at least one air supply nozzle for providing supply air thereto; (d) an air return path coupled in fluid communication with the interior of the oven; and (e) a fan coupled to the air supply duct for directing air from the air return path to the air supply duct.