Patent ID: 6058924
Filing Date: 2000-05-09
Classification: F24C,H05B

Abstract:
A recycling cooking oven for cooking food at least in part by hot air flow and providing a substantially closed but vented environment, comprising:A. a cooking chamber for receiving a stream of hot air from a thermal plenum via a plurality of openings in said cooking chamber, said cooking chamber cooking food therein at least partially with hot air from the plurality of openings and the cooking of such foods adding oxidizable components to the hot air;B. means forming a thermal plenum located upstream of said cooking chamber and including heating means for supplying hot air into said cooking chamber via said plurality of openings;C. means for causing the stream of hot air to circulate in substantially a continuous travel path including said thermal plenum, said plurality of openings and said cooking chamber;D. a main catalytic converter disposed in said continuous travel path of the stream of hot air for flamelessly oxidizing oxidizable components in the hot air of the stream leaving said cooking chamber, thereby both to remove them from the hot air of the stream and to release at least some additional heat energy into the hot air of the stream;E. vent means communicating with ambient atmosphere and said main catalytic converter for diverting an auxiliary vent stream of hot air from said main catalytic converter into said vent means; andF. an auxiliary catalytic converter disposed in said vent means, downstream of said main catalytic converter, for flamelessly oxidizing oxidizable components in the hot air of the auxiliary vent stream passing through said vent means, thereby to further remove oxidizable components from the hot air of the auxiliary vent stream and so release a relatively clean auxiliary vent stream of hot air from said vent means into the ambient atmosphere.