(under subclass 263) Apparatus provided with vane or vanelike structure through which the pulverized fuel and air mixture is caused to flow into the combustion chamber thereby producing a rotary flow of the mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213, for an incinerator or solid fuel furnace provided with a liquid or gaseous fuel swirl inducing after-burner.
SEE OR SEARCH CLASS
431, Combustion,
173+, for fluid fuel circular combustion furnace structure in which the fuel is fed tangentially into the furnace.
