Material treatment

Details Material treatment Material treatment

A - Human Necessities

21

B

107/61

A21B 1/24 (2006.01) A21B 1/48 (2006.01) F24C 15/32 (2006.01)

Patent

CA 1172513

ABSTRACT A product conveyor that has a predominately open area transports food substances, such as pizzas and the like to be cooked, through a thermally insulated treatment zone. An array of nozzles disposed below the conveyor across the width and along the length of the treatment zone discharges streams of heated air upwardly through the conveyor against the bottom surfaces of the food products on the conveyor for primary heat exchange treatment. A reflection surface forms an upper boundary of the treatment zone, and the portion of the upwardly flowing air streams that is not deflected by the food products on the conveyor impinges against the reflection surface and is transformed into downward flowing relatively low velocity air for flow against and across the top surfaces of the food products. After those heat exchange interactions the air is drawn downwardly between the nozzles for exhaust at a point located below the conveyor.

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