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US 2013/0152913 A1Published application
Combination Oven with Catalytic Converter
AssigneeAlto-Shaam, Inc.
InventorsJ.K. Raghavan, Thomas Wayne Rand, Joshua Paul Wittig, Nickolas W. Wagner
Life of this patent
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Abstract
A combination oven provides for a catalyst chamber for heating and treating a bypass portion of the air circulated within the cooking chamber at a high temperature using a catalyst to process cooking fumes without substantially elevating the desired cooking temperature.
Claims15
A combination oven comprising:
- an oven housing defining a cooking volume and having a door providing access to the cooking volume and sealing the cooking volume when the door is in a closed position;
- a convection heater assembly communicating with the cooking volume and providing a convection heater element, a steam generator, and a fan for circulating convection air and steam into and out of the cooking volume along a first path;
- and
- a catalyst chamber assembly communicating with the cooking volume to conduct bypass air along a second path different from the first path through the catalyst chamber into and out of the cooking volume, the catalyst chamber including a catalytic element treating the bypass air and a bypass heater heating at least one of the bypass air and catalyst to a catalytic activation temperature.
1 more element
A method of cooking employing an oven of a type providing:
- an oven housing defining a cooking volume and having a door providing access to the cooking volume and sealing the cooking volume when the door is in a closed position;
- a convection heater assembly communicating with the cooking volume and providing a convection heater element, a steam generator, and a fan for circulating convection air and steam into and out of the cooking volume along a first path;
- a catalyst chamber assembly communicating with the cooking volume to conduct bypass air along a second path different from the first path through the catalyst chamber into and out of the cooking volume, the catalyst chamber including a catalytic element treating the bypass air and a bypass heater heating at least one of the bypass air and catalyst to a catalytic activation temperature;
- and
- an electronic controller executing a stored program to permit operation of the convection heater element only, the bypass heater element only, or both the convection heater element and bypass heater element, the method comprising the steps of:
- (a) receiving commands from a user selecting among cooking schedules characterized as providing substantial cooking fumes or not providing substantial cooking fumes;
- (b) operating the convection heater assembly to provide a desired cooking environment within the cooking volume according to the cooking schedule;
- (c) operating the bypass air heater to provide heated air in the catalyst chamber only for cooking schedules characterized as providing substantial cooking fumes.
5 more elements
Dependencies are inferred from the claim text.