Apparatus and method for a burner nozzle assembly

Abstract

A burner nozzle assembly comprising a nozzle body having a body inlet end, a body outlet end spaced apart from the body inlet end, a body air inlet adapted to convey a quantity of air, and a body fuel inlet adapted to convey a quantity of fuel, a nozzle mixer having a mixer inlet end, a mixer outlet end spaced apart from the mixer inlet end, a mixer air inlet adapted to convey the quantity of air, a mixer fuel inlet adapted to convey the quantity of fuel, and a mixing zone, a nozzle cap which is disposed adjacent to the body outlet end and the nozzle mixer, and a pintle which is partially disposed in the nozzle mixer. The mixer air inlet forms a substantially conical shape. A method for producing a burner flame.

What is claimed is: 
     
         1 . A burner nozzle assembly, said burner nozzle assembly having a longitudinal axis and comprising:
 (a) a nozzle body, said nozzle body having a body inlet end, a body outlet end spaced apart from the body inlet end, a body air inlet adapted to convey a quantity of air, and a body fuel inlet adapted to convey a quantity of fuel;   (b) a nozzle mixer, said nozzle mixer having a mixer inlet end, a mixer outlet end spaced apart from the mixer inlet end, a mixer air inlet adapted to convey the quantity of air, a mixer fuel inlet adapted to convey the quantity of fuel, and a mixing zone, and said mixer inlet end being disposed adjacent to the body outlet end;   (c) a nozzle cap, said nozzle cap being disposed adjacent to the body outlet end and the nozzle mixer;   (d) a pintle, said pintle being partially disposed in the nozzle mixer;   wherein the body air inlet is in fluid communication with the mixer air inlet; and wherein the body fuel inlet is in fluid communication with the mixer fuel inlet; and wherein the mixer air inlet forms a substantially conical shape.   
     
     
         2 . The burner nozzle assembly of  claim 1  wherein the body air inlet and the body fuel inlet are adapted to keep the quantity of air and the quantity of fuel separate from each other. 
     
     
         3 . The burner nozzle assembly of  claim 1  wherein the mixer air inlet and mixer fuel inlet are in fluid communication with each other. 
     
     
         4 . The burner nozzle assembly of  claim 1  wherein the mixer fuel inlet is substantially parallel to the longitudinal axis. 
     
     
         5 . The burner nozzle assembly of  claim 1  wherein the mixer air inlet is disposed at an angle relative to the longitudinal axis. 
     
     
         6 . The burner nozzle assembly of  claim 1  wherein the quantity of air conveyed by the mixer air inlet is adapted to shear the quantity of fuel conveyed by the mixer fuel inlet. 
     
     
         7 . The burner nozzle assembly of  claim 1  wherein mixer air inlet is tapered. 
     
     
         8 . The burner nozzle assembly of  claim 1  wherein the mixer air inlet is tapered 7 degrees downstream. 
     
     
         9 . The burner nozzle assembly of  claim 1  wherein the mixer air inlet comprises a plurality of separate, substantially cylindrical mixer air inlet conduits. 
     
     
         10 . The burner nozzle assembly of  claim 1  wherein the mixer fuel inlet comprises a plurality of separate, substantially cylindrical mixer fuel inlet conduits. 
     
     
         11 . The burner nozzle assembly of  claim 1  wherein the pintle is removably disposed in the nozzle mixer. 
     
     
         12 . The burner nozzle assembly of  claim 1  further comprising a threaded fastener adapted to removably connect the pintle to the nozzle mixer. 
     
     
         13 . The burner nozzle assembly of  claim 1  further comprising an alignment roll pin. 
     
     
         14 . A burner nozzle assembly, said burner nozzle assembly having a longitudinal axis and comprising:
 (a) a nozzle body, said nozzle body having a body inlet end, a body outlet end spaced apart from the body inlet end, a body air inlet adapted to convey a quantity of air, and a body fuel inlet adapted to convey a quantity of fuel;   (b) a nozzle mixer, said nozzle mixer having a mixer inlet end, a mixer outlet end spaced apart from the mixer inlet end, a tapered mixer air inlet adapted to convey the quantity of air, a mixer fuel inlet adapted to convey the quantity of fuel, and a mixing zone, and said mixer inlet end being disposed adjacent to the body outlet end;   (c) a nozzle cap, said nozzle cap being disposed adjacent to the body outlet end and the nozzle mixer;   (d) a pintle, said pintle being partially and removably disposed in the nozzle mixer;   wherein the body air inlet is in fluid communication with the tapered mixer air inlet; and   wherein the body fuel inlet is in fluid communication with the mixer fuel inlet; and   wherein the body air inlet and the body fuel inlet keep the quantity of air and the quantity of fuel separate from each other; and wherein the tapered mixer air inlet forms a substantially conical shape and is disposed at an angle relative to the longitudinal axis;   and wherein the tapered mixer air inlet is in fluid communication with the mixer fuel inlet which is disposed substantially parallel to the longitudinal axis.   
     
     
         15 . A method for producing a burner flame, said method comprising:
 (a) providing a burner nozzle assembly having a longitudinal axis, said burner nozzle assembly comprising:
 (i) a nozzle body, said nozzle body having a body inlet end, a body outlet end spaced apart from the body inlet end, a body air inlet adapted to convey a quantity of air, and a body fuel inlet adapted to convey a quantity of fuel; 
 (ii) a nozzle mixer, said nozzle mixer having a mixer inlet end, a mixer outlet end spaced apart from the mixer inlet end, a mixer air inlet adapted to convey the quantity of air, a mixer fuel inlet adapted to convey the quantity of fuel, and a mixing zone, and said mixer inlet end being disposed adjacent to the body outlet end; 
 (iii) a nozzle cap, said nozzle cap being disposed adjacent to the body outlet end and the nozzle mixer; 
 (iv) a pintle, said pintle being partially disposed in the nozzle mixer; 
 wherein the body air inlet is in fluid communication with the mixer air inlet; and 
 wherein the body fuel inlet is in fluid communication with the mixer fuel inlet; 
 and wherein the mixer air inlet forms a substantially conical shape; 
   (b) conveying the quantity of air to the burner nozzle assembly;   (c) conveying the quantity of fuel to the burner nozzle assembly;   (d) mixing the quantity of air and the quantity of fuel;   (e) igniting the mixture of the quantity of air and the quantity of fuel.   
     
     
         16 . The method for producing a burner flame of  claim 15  further comprising forming a uniform conical curtain from the quantity of air and the quantity of fuel mixture behind the pintle. 
     
     
         17 . The method for producing a burner flame of  claim 15  further comprising forming a conical spray of the quantity of air and the quantity of fuel mixture. 
     
     
         18 . The method for producing a burner flame of  claim 15  wherein the burner nozzle assembly further comprises a threaded fastener, said threaded fastener being adapted to removably connect the pintle to the nozzle mixer. 
     
     
         19 . The method for producing a burner flame of  claim 18  further comprising removing the pintle from the burner nozzle assembly by removing the threaded fastener. 
     
     
         20 . The method for producing a burner flame of  claim 19  further comprising replacing the pintle into the burner nozzle assembly by replacing the threaded fastener.