Blower-type burner suitable for use with heating boilers employing gas return ducting

摘要

There is disclosed a blower-type burner for use with heating boilers which is effective for reducing NO.sub.x pollutants produced by flue gases. The device is mountable about an opening in a closure or sealing panel of a furnace body and provides for containment of the flue gas path within the burner. A separated dual impeller system provides for complete separation of the flue gas path from a combustion intake system.