Balanced air return convection oven

Details Balanced air return convection oven Balanced air return convection oven

A - Human Necessities

21

B

309/49

A21B 1/26 (2006.01) A21B 1/48 (2006.01) F24C 15/32 (2006.01) F24H 3/04 (2006.01)

Patent

CA 2024203

A method and apparatus for heating a product which includes a plurality of tapered ducts in a cabinet above and below a conveyor to form streams which are directed toward the product. Spent air is drawn through return ducts which have intake openings centered between entrance and exit openings in the cabinet and centered between lateral edges of a conveyor and between the tapered ducts to provide a balanced flow of spent air in the cabinet to the return opening. j Temperature controlled gas is delivered at an angle through an array of openings adjacent opposite edges of an opening through which a conveyor extends to cause most of the heated air to be drawn to the return duct opening and to maintain internal pressure in the cabinet to prevent ingress and egress of air through the opening.

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