The Selas DNS Nozzle Mix burner features a unique cup-like design that allows combustion air and fuel gas to quickly and thoroughly mix at the nozzle. An igniter is then used to start combustion of the air/gas mixture, subjecting it to turbulence so that it burns rapidly and completely within a small area as it sweeps across the cup. This distributes fully reacted combustion products into the furnace where the hot gas heats the work directly. The products of combustion are broadly distributed so they transfer heat to the work evenly, minimizing the localized overheating often caused by concentrated impingement from flame-type burners. The combustion is complete within the cup, so the heat exiting from the cup is uniform, stable and highly controllable. By contrast, the combustion of conventional flame-type burners takes place over a longer period of time with temperature and heat transfer characteristics varying over the length of the flame.
