Solid fuel burning stove with secondary air heat exchanger

Abstract From the Canadian patent

A solid fuel burning stove of the present invention includes an internal combustion chamber a primary air feed, to the combustion chamber and a heat exchanger above and providing a secondary heated air feed to the combustion chamber. This secondary air feed raises burning temperatures and reduces pollutants from the exhaust of the stove. The heat exchanger itself has a horizontally layered substantially closed box-like construction including a heated gas outflow layer fed by the hot exhaust gases from the combustion chamber, at least one secondary air inflow layer into which secondary air is drawn from outside of the stove, a heat exchange wall between and isolating the gas outflow layer …