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US 10,646,824 B2Granted
Catalytic cookstove with passive control of draft and method of use
AssigneeMainsteam Engineering Corporation
InventorsPaul E. Yelvington, Alex Paulsen, Andrew Carpenter, Tyler Kunsa, Ted Amundsen, Nicholas Schwartz
Life of this patent
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Abstract
A catalytic cookstove, for use in cooking, heating, and lighting, is disclosed for reducing particulate matter and carbon monoxide emissions. A non-platinum group metal catalyst promotes oxidation of particulate matter and carbon monoxide to produce carbon dioxide. Additionally, a passive damper automatically adjusts the fuel-to-air ratio based upon the size of fuel fed to the stove to ensure catalyst light off.
Claims13
A solid-fuel burning stove comprising:
- a stove body defining a combustion chamber, wherein the combustion chamber has a top portion;
- the stove body further having an inlet adapted to receive solid fuel, the inlet being disposed substantially at a base of the combustion chamber and the inlet defining a passage for the intake of air and fuel into the combustion chamber;
- and
- a catalyst coated substrate extending across the top portion of the combustion chamber and in proximity to any direct flame impingement coming from the combustion chamber and comprising a substrate and a catalyst compound coating the substrate;
- wherein the substrate comprises an iron-chromium-aluminum alloy,
- wherein the catalyst compound comprises K2Ti2O5, and
- wherein the catalyst coated substrate is configured to permit the flow of exhaust gases therethrough and to expose the catalytic compound to the exhaust gases.
4 more elements
Dependencies are inferred from the claim text.