Microwave turntable convection heater

Details Microwave turntable convection heater Microwave turntable convection heater

F - Mech Eng,Light,Heat,Weapons

24

C

F24C 7/02 (2006.01) H05B 6/80 (2006.01)

Patent

CA 2103168

A method and apparatus for heating or cooling a product which includes a plurality of tapered ducts in a cabinet above and below a turntable to form streams which are directed toward the product. Spent air is drawn through intake openings in return ducts in the cabinet. Temperature controlled gas is delivered at an angle through an array of openings adjacent opposite edges of an opening through which a product is loaded on the turntable in a loading zone to cause most of the heated air to be drawn to return duct openings and to maintain internal pressure in the baking zone in the cabinet to prevent ingress and egress of air through the loading opening. Orifices are formed in a circular array of rings such that the sum of the areas of orifices in each ring spaced from the axis about which the turntable rotates is substantially equal.

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