Quantcast

Premix burner with integral mixers and supplementary burner system

Imported: 24 Feb '17 | Published: 06 Jan '04

Thomas B. Neville, Thomas F. Robertson, Brian J. Schmotzer

USPTO - Utility Patents

Abstract

An apparatus is provided including a furnace structure defining a reaction chamber in which oxidant and fuel are reacted to form combustion products and having an anchor surface having an opening through which the oxidant and fuel are introduced into the reaction chamber. The reaction chamber is configured to recirculate the combustion products back toward the anchor surface. The apparatus also includes an anchor outlet configured to create a layer of combustion products directed along the anchor surface under the influence of the recirculated combustion products. The apparatus further includes a primary outlet configured to direct primary fuel to flow into the reaction chamber through the opening and the layer of combustion products so as to ignite the primary fuel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of an apparatus comprising a first embodiment of the invention.

FIG. 2 is a schematic view of an apparatus comprising a second embodiment of the invention.

FIG. 3 is a view taken on line

3

3 of FIG.

2.

FIG. 4 is an enlarged schematic view of part of the apparatus shown in FIG.

2.

Claims

1. An apparatus for use with a furnace structure defining a reaction chamber with an entrance end, an exit end, and a choke configuration to direct recirculating combustion products from said exit end back toward said entrance end, said apparatus comprising:

2. An apparatus as defined in claim 1 wherein said radial flame burner has an anchor fuel line with a diffusion outlet configured to emit fuel in only radial directions.

3. An apparatus as defined in claim 1 wherein said radial flame burner has a mixing structure.

4. An apparatus as defined in claim 3 wherein said mixing structure is a spin plate for inducing a swirl in the anchor layer of combustion products.

5. An apparatus as defined in claim 1 wherein said anchor surface has a conical surface portion that widens radially outward of said inner opening.

6. An apparatus as defined in claim 5 wherein said anchor surface further has a planar surface portion that extends radially outward of said conical surface portion, with said array of radially outer openings located at said planar surface portion.

7. An apparatus as defined in claim 6 wherein said conical portion of said anchor surface is adjacent to said inner opening, and said planar portion is adjacent to said conical portion.

8. An apparatus for use with a furnace structure defining a reaction chamber with an entrance end, an exit end, and a choke configuration to direct recirculating combustion products from said exit end back toward said entrance end, said apparatus comprising:

9. An apparatus as defined in claim 7 wherein said mixing structure is a spin plate for inducing a swirl in the anchor layer of combustion products.

10. An apparatus as defined in claim 7 wherein said burner has an anchor fuel line with a diffusion outlet configured to emit fuel in only radial directions.

11. An apparatus as defined in claim 7 wherein said anchor surface has a conical surface portion that widens radially outward of said inner opening.

12. An apparatus as defined in claim 11 wherein said anchor surface further has a planar surface portion that extends radially outward of said conical surface portion, with said array of radially outer openings located at said planar surface portion.

13. An apparatus as defined in claim 12 wherein said conical portion of said anchor surface is adjacent to said inner opening, and said planar portion is adjacent to said conical portion.

14. An apparatus for use with a furnace structure defining a reaction chamber with an entrance end, an exit end, and a choke configuration to direct recirculating combustion products from said exit end back toward said entrance end, said apparatus comprising:

15. An apparatus as defined in claim 14 wherein said conical portion of said anchor surface is adjacent to said inner opening, and said planar portion is adjacent to said conical portion.

16. An apparatus as defined in claim 14 wherein said burner has a mixing structure in the form of a spin plate for inducing a swirl in the anchor layer of combustion products.

17. An apparatus as defined in claim 14 wherein said burner has an anchor fuel line with a diffusion outlet configured to emit fuel in only radial directions.