APPARATUS AND METHOD FOR A BURNER NOZZLE ASSEMBLY
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.
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This application relates back to and claims the benefit of priority from U.S. Provisional Application for Patent Ser. No. 62/293,594 titled “Burner Fuel Oil Nozzle” and filed on Feb. 10, 2016.
FIELD OF THE INVENTIONThe present invention relates generally to apparatuses and methods for nozzle assemblies, and particularly to apparatuses and methods for burner fuel oil nozzle assemblies.
BACKGROUND AND DESCRIPTION OF THE PRIOR ARTIt is known to use apparatuses and methods for burner nozzle assemblies. Conventional apparatuses and methods, however, suffer from one or more disadvantages. For example, conventional burner nozzle assemblies and methods do not sufficiently reduce air consumption or air inlet pressure. Conventional burner nozzle assemblies and methods do not sufficiently optimize atomization or the mixture of fuel and air. Conventional burner nozzle assemblies do not produce a sufficiently uniform conical curtain of fuel and air mixture behind the pintle. Conventional burner nozzle assemblies and methods do not comprise a removable pintle.
It would be desirable, therefore, if an apparatus and method for a burner nozzle assembly could be provided that would reduce air consumption and air inlet pressure. It would also be desirable if such an apparatus and method for a burner nozzle assembly could be provided that would optimize atomization and the mixture of fuel and air. It would be still further desirable if such an apparatus and method for a burner nozzle assembly could be provided that would produce a uniform conical curtain of fuel and air mixture behind the pintle. In addition, it would be desirable if such an apparatus and method for a burner nozzle assembly could be provided that would comprise a removable pintle.
ADVANTAGES OF THE PREFERRED EMBODIMENTS OF THE INVENTIONAccordingly, it is an advantage of the preferred embodiments of the invention claimed herein to provide an apparatus and method for a burner nozzle assembly that reduces air consumption and air inlet pressure. It is also an advantage of the preferred embodiments of the invention claimed herein to provide an apparatus and method for a burner nozzle assembly that optimizes atomization and the mixture of fuel and air. It is an advantage of the preferred embodiments of the invention claimed herein to provide an apparatus and method for a burner nozzle assembly that produces a uniform conical curtain of fuel and air mixture behind the pintle. It is also an advantage of the preferred embodiments of the invention claimed herein to provide an apparatus and method for a burner nozzle assembly that comprises a removable pintle.
Additional advantages of the preferred embodiments of the invention will become apparent from an examination of the drawings and the ensuing description.
SUMMARY OF THE INVENTIONThe apparatus of the invention comprises a burner nozzle assembly having a longitudinal axis and 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. The preferred burner nozzle assembly also comprises 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. Preferably, the mixer inlet end is disposed adjacent to the body outlet end. The preferred burner nozzle assembly further comprises a nozzle cap which is disposed adjacent to the body outlet end and the nozzle mixer. The preferred burner nozzle assembly still further comprises a pintle which is partially disposed in the nozzle mixer. In the preferred burner nozzle assembly, the body air inlet is in fluid communication with the mixer air inlet, the body fuel inlet is in fluid communication with the mixer fuel inlet, and the mixer air inlet forms a substantially conical shape.
The method of the invention comprises a method for producing a burner flame. The preferred method comprises providing a burner nozzle assembly having a longitudinal axis. The preferred burner nozzle assembly comprises 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. The preferred burner nozzle assembly also comprises 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. Preferably, the mixer inlet end is disposed adjacent to the body outlet end. The preferred burner nozzle assembly further comprises a nozzle cap which is disposed adjacent to the body outlet end and the nozzle mixer. The preferred burner nozzle assembly still further comprises a pintle which is partially disposed in the nozzle mixer. In the preferred burner nozzle assembly, the body air inlet is in fluid communication with the mixer air inlet, the body fuel inlet is in fluid communication with the mixer fuel inlet, and the mixer air inlet forms a substantially conical shape. The preferred method further comprises conveying the quantity of air to the burner nozzle assembly, conveying the quantity of fuel to the burner nozzle assembly, mixing the quantity of air and the quantity of fuel, and igniting the mixture of the quantity of air and the quantity of fuel.
The presently preferred embodiments of the invention are illustrated in the accompanying drawings, in which like reference numerals represent like parts throughout, and in which:
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The invention also comprises a method for producing a burner flame. The preferred method for producing a burner flame comprises providing a burner nozzle assembly. The preferred burner nozzle assembly comprises 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. The preferred burner assembly also comprises 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. The preferred mixer inlet end is disposed adjacent to the body outlet end. The preferred burner nozzle assembly further comprises a nozzle cap that is disposed adjacent to the body outlet end and the nozzle mixer. The preferred burner nozzle assembly still further comprises a pintle, said pintle being partially disposed in the nozzle mixer. In the preferred burner nozzle assembly, the body air inlet is in fluid communication with the mixer air inlet, the body fuel inlet is in fluid communication with the mixer fuel inlet, and the mixer air inlet forms a substantially conical shape. The preferred method for producing a burner flame also comprises conveying the quantity of air to the burner nozzle assembly, conveying the quantity of fuel to the burner nozzle assembly, mixing the quantity of air and the quantity of fuel, and igniting the mixture of the quantity of air and the quantity of fuel.
In other preferred embodiments of the method for producing a burner flame, the method further comprises forming a uniform conical curtain from the quantity of air and the quantity of fuel mixture behind the pintle. In other preferred embodiments of the method for producing a burner flame, the method further comprises forming a conical spray of the quantity of air and the quantity of fuel mixture. In still other preferred embodiments of the method for producing a burner flame, the burner nozzle assembly further comprises a threaded fastener that is adapted to removably connect the pintle to the nozzle mixer and the method for producing a burner assembly further comprises removing the pintle from the burner nozzle assembly by removing the threaded fastener and replacing the pintle into the burner nozzle assembly by replacing the threaded fastener.
In operation, several advantages of the preferred embodiments of the burner nozzle assembly are achieved. For example, the preferred embodiments of the burner nozzle assembly reduce air consumption and air inlet pressure. The preferred embodiments of the burner nozzle assembly also optimize atomization and the mixture of fuel and air. In addition, the preferred embodiments of the burner nozzle assembly produce a uniform conical curtain of fuel and air mixture behind the pintle and a conical spray from the air and fuel mixture. Further, in the preferred embodiments of the burner nozzle assembly, the pintle is easily removed and replaced using a threaded fastener.
Although this description contains many specifics, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments thereof, as well as the best mode contemplated by the inventors of carrying out the invention. The invention, as described herein, is susceptible to various modifications and adaptations, and the same are intended to be comprehended within the meaning and range of equivalents of the appended claims.
Claims
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.
Type: Application
Filed: Feb 9, 2017
Publication Date: Aug 10, 2017
Applicant: Astec, Inc. (Chattanooga, TN)
Inventors: Shannon Putman (Rossville, GA), Joseph Unjakoti (Rock Spring, GA), Michael Swanson (Chickamauga, GA), Malcolm Swanson (Chickamauga, GA), Andrew Hobbs (Sheffield)
Application Number: 15/428,602