A - Human Necessities – 21 – B
Patent
A - Human Necessities
21
B
107/61
A21B 1/46 (2006.01) F24C 15/32 (2006.01) F25D 17/06 (2006.01)
Patent
CA 1198937
ABSTRACT OF THE DISCLOSURE An oven for preparing food comprising an enclo- sure (20) having a conveyor (156) received therethrough for conveying food to be prepared through the enclosure. Positioned within the enclo- sure and about the conveyor portion therein are ducts (210) for impinging heated air against the food product, a plenum (176) connected to the ducts for supplying heated air to the ducts, and an impeller (302) for recirculating the air within the enclosure for reheating and subsequent passage to the plenum and ducts. A heating source (326) is provided within a heating chamber (308) on the opposite side of the plenum from the ducts, and control components are provided for regulating the temperature of the heat source. The impeller assembly and the plenum are unique in that air drawn from the heating chamber by the impeller assembly is axially and radially urged into the plenum for substantially uniform dis- tribution to the ducts communicating with the plenum. The impeller assembly and the plenum also uniquely provide for the air flow to be reversed in a very short distance. Furthermore, the structure of the impeller assembly and plenum provide at various points tapering walls, which permit air to flow thereover in a non-turbulent manner, thereby elim- inating dead spots or stagnant air pockets.
427962
Archer Virgil L.
Bell Gordon D.
Henke Mitchell C.
Smith Donald P.
Enersyst Inc.
Lincoln Manufacturing Company Inc.
Macrae & Co.
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