Adjustable burner insert and method of adjusting same
AssigneeSouthwire Company
InventorsKerim Askin, John D. Butler
Life of this patent
Estimating the term…
Abstract
An improved premix-type burner for a gas-fired metal processing furnace includes a burner insert externally adjustable over a stepless continuum. The burner insert includes a helical thread disposed on its outer diameter which cooperatively engages with a helical thread disposed on an inner diameter of the burner body bore. Rotation of an adjustment tube, which extends into the burner body and is affixed to the burner insert concentrically disposed therein, causes axial translation of the burner insert, thereby regulating fuel flow to the combustion chamber and controlling the combustion process.
Claims22
A burner apparatus for a metal processing furnace comprising a burner body having an axial bore therethrough and an inlet for supplying a premixed gaseous fuel to the base of the burner body, the bore of said burner body having an outlet into said furnace, a burner insert disposed in said bore adjacent said outlet, said premixed fuel flowing from said inlet through said burner insert and into the furnace for combustion and means coupled to the burner insert and operable from outside the burner body for adjusting the axial position of the burner insert in relation to the outlet whereby the point at which the premixed gaseous fuel flows into the furnace can be varied to thereby alter the performance of the burner during operation of the furnace.
A burner apparatus for a metal processing furnace comprising a burner body having an axial bore therethrough and an inlet for supplying a premixed gaseous fuel to the base of the burner body, the bore of said burner body having an outlet into said furnace, a burner insert disposed in said bore adjacent the outlet through which the premixed fuel flows into the furnace for combustion, means coupled to the burner insert and operable from outside the burner body for adjusting the axial position of the burner insert in relation to the outlet whereby the performance of the burner may be altered during operation of the furnace, said adjusting means for the burner insert comprising an adjustment tube connected at one end to the burner insert, the other end of said adjustment tube extending out of the burner body, said burner insert being axially slidable in said bore by means of said adjustment tube and means on said burner body for securing said adjustment tube against axial movement so as to fix the position of the burner insert in the bore, said securing means comprising a gasket surrounding said tube and a collar means for compressing said gasket into gripping relation with the tube.
A burner apparatus for a metal processing furnace comprising a burner body having an axial bore therethrough and an inlet for supplying a premixed gaseous fuel to the base of the burner body, the bore of said burner body having an outlet into said furnace, a burner insert disposed in said bore adjacent the outlet through which the premixed fuel flows into the furnace for combustion, means coupled to the burner insert and operable from outside the burner body for adjusting the axial position of the burner insert in relation to the outlet whereby the performance of the burner may be altered during operation of the furnace, said adjusting means for the burner insert comprising an adjustment tube connected at one end to the burner insert, the other end of said adjustment tube extending out of the burner body, said burner insert and said bore being provided with mating helical threads, whereby said burner insert is axially adjustable in said bore by rotation of the burner insert by means of the adjustment tube.
A burner apparatus for a metal processing furnace comprising a burner body having an axial bore therethrough and an inlet for supplying a premixed gaseous fuel to the base of the burner body, the bore of said burner body having an outlet into said furnace, a burner insert disposed in said bore adjacent the outlet through which the premixed fuel flows into the furnace for combustion and means coupled to the burner insert and operable from outside the burner body for adjusting the axial position of the burner insert in relation to the outlet whereby the performance of the burner may be altered during operation of the furnace, said adjusting means for the burner insert comprising an adjustment tube connected at one end to the burner insert, the other end of said adjustment tube extending out of the burner body, said burner bore having a helical groove, and a pin on said burner insert engagable in said groove, whereby said burner insert is axially adjustable in said bore by rotation of the burner insert by means of the adjustment tube.
A burner apparatus for a metal processing furnace comprising a burner body having an axial bore therethrough and an inlet for supplying a premixed gaseous fuel to the base of the burner body, the bore of said burner body having an outlet into said furnace, a burner insert disposed in said bore adjacent the outlet through which the premixed fuel flows into the furnace for combustion and means coupled to the burner insert and operable from outside the burner body for adjusting the axial position of the burner insert in relation to the outlet whereby the performance of the burner may be altered during operation of the furnace, said adjusting means for the burner insert comprises an adjustment tube connected at one end to the burner insert, the other end of said adjustment tube extending out of the burner body, said burner insert comprising a tubular member integrally formed with a truncated conical member, said tubular member comprising a throat through which the premixed gaseous fuel flows into the furnace for combustion.
A burner insert for a premixed gaseous fuel burner apparatus for use in a metal processing furnace comprising a tubular member having a throat through which the premixed fuel passes, the throat having an axis, a truncated conical member integrally formed with said tubular member, a plurality of radial fins connected to the conical member, an elongated adjustment tube connected to the radial fins, said tube having a bore with an axis substantially coincident with the throat axis.
A burner apparatus for a metal processing furnace having a combustion chamber fired by a premixed gaseous fuel comprising a burner body having a fuel inlet and a fuel outlet and a central bore communicating said inlet with said outlet, a burner insert disposed in said bore for axial adjustment in said bore, said insert comprising a tubular member, a plurality of radial fins connected to the conical member, an elongated adjustment tube connected to the radial fins, said tube having a bore with an axis substantially coincident with the throat axis, and means cooperating between said burner body and said burner insert for adjusting the axial position of said tubular member in said central bore.
A method of operating a burner apparatus for a metal processing furnace having a combustion chamber fired by a premixed gaseous fuel comprising a burner body having a fuel inlet and an outlet and a central bore communicating said inlet with said outlet, a burner insert disposed in said bore, said burner insert having a tubular member with a throat through which the premixed gaseous fuel passes, an adjustment tube connected to said tubular member and extending out of the burner body exterior to the furnace, the method comprising:
- inserting a burner insert in the central bore of the burner body;
- directing a flow of premixed gaseous fuel into the inlet of the burner body;
- igniting the fuel passing through the throat of the burner insert to create a flame in the combustion chamber, and
- manipulating the adjustment tube from outside the furnace during operation thereof to adjust the axial position of the tubular member in the central bore.
Dependencies are inferred from the claim text.