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A furnace and burner construction and method of burning fuel therein. The furnace housing has an end wall and side walls extending generally perpendicularly from the end wall and defining a furnace interior. One or more air supply ports open axially thereof through the end wall, and at least one fue

A furnace and burner construction and method of burning fuel therein. The furnace housing has an end wall and side walls extending generally perpendicularly from the end wall and defining a furnace interior. One or more air supply ports open axially thereof through the end wall, and at least one fuel supply port opens axially thereof through the end wall and is spaced from the air supply port or ports. The air supply port is spaced from the side walls. When generally conical surfaces of jets of fuel and air are injected into the interior of the furnace through the air supply port or ports and the fuel supply port for carrying out burning of the fuel, recirculating currents of combustion products from the burning of the fuel are formed in the space between the jets and the side walls or between the jets themselves to lower the temperature of the burning.

대표청구항 ▼

An apparatus comprising: a furnace housing, having an end wall and sidewalls extending generally perpendicularly from said end wall, defining a furnace interior; circulation means for supplying an air stream into said furnace interior spaced from said sidewalls in a portion of said furnace interior

An apparatus comprising: a furnace housing, having an end wall and sidewalls extending generally perpendicularly from said end wall, defining a furnace interior; circulation means for supplying an air stream into said furnace interior spaced from said sidewalls in a portion of said furnace interior adjacent said end wall, for supplying a fuel steam into said furnace interior spaced from the air stream in the portion of said furnace interior adjacent said end wall, for mixing said air stream and said fuel stream in a portion of said furnace interior spaced from said end wall, for combusting the mixture of said fuel stream and air stream to generate combustion products, and for causing said combustion products to circulate in spaces formed in the portion of said furnace interior adjacent said end wall between said air stream and said sidewalls and between said air stream and said fuel stream and to mix with said air stream said fuel stream prior to said fuel stream and said air stream mixing together; said circulation means comprising at least one air supply port opening through said end wall and spaced at least a first predetermined distance from said sidewalls, and at least one fuel supply port opening through said end wall and spaced at least a second predetermined distance from said air supply port.