F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
158/40
F23D 14/84 (2006.01)
Patent
CA 2008343
AN IMPROVED GAS OVEN DKT NO. G1891-CAN HAVING FLAME SWITCHING January 20,1990 ABSTRACT OF THE INVENTION This invention is directed to a flame switchable gas burning device, adapted to be mounted or attached within the oven cavity of a gas stove, which provides an improved gas stove having control of the flame switching air and the convection cooking air. Such control is achieved by providing a shunt air path which may have one or more controlled dampers and a blower with variable and controllable speed. In another embodiment the combustion gases and the cooking air are kept separate by incorporation of a counterflow heat exchanger making the device indirect fired. In the indirect fired embodiment steam may be controllably introduced into the oven cavity to further speed the baking/cooking time. The improved gas oven can, within the one oven cavity, operate in the broil, bake, steam cook, and self-clean mode without the need for multiple burners or multiple oven cavities and without the need for manually operated baffles or dampers.
Gas Research Institute
Mcfadden David H.
Swabey Ogilvy Renault
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