Patent ID: 6041770
Filing Date: 2000-03-28
Classification: F23N,F24B

Abstract:
A method of controlling air flow through an air inlet to a combustion chamber of a wood burning stove comprising the steps of:sensing temperature rise in the combustion chamber of the wood stove with a bi-metal strip coil having a fixed outer end and a crank arm connected to a floating inner end;rotating the crank arm as the temperature rises to push against a free pivoted flap retained by gravity over the air inlet to open the air inlet and permit air to flow therethrough to increase combustion in the combustion chamber;sensing temperature drop in the combustion chamber of the wood stove with the bi-metal coil;rotating the crank arm in the opposite direction from the temperature rising, as the temperature drops to permit the flap to close by gravity over the air inlet to reduce combustion in the combustion chamber; andpermitting the crank arm to continue rotating as the temperature drops without effecting the closed flap.