High efficiency burner

• US 8,596,259 B2
• Filed: 01/12/2010
• Issued: 12/03/2013
• Est. Priority Date: 01/13/2009
• Status: Active Grant

• Current Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Original Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Inventors: Padgett, Michael, Pottenger, John, Pryor, William M.
• Primary Examiner(s): Basichas, Alfred
• Application Number:
  US12/685,818
• Publication Number:
  US 20100175683A1
• Time in Patent Office: 1,421 Days
• Field of Search: 126/39.E, 126/39.R, 239/552, 239/556, 239/558, 431/278, 431/285, 431/286, 431/354
• US Class Current: 126/39.E
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head

Abstract

A gas burner for an appliance includes a base and a cover. The base includes a wall peripherally formed about the base. The wall includes a plurality of slits extending through the wall and downwardly from a top of the wall. A cover is configured to be placed on the base and form a chamber in fluid communication with a gas conduit. The cover is configured to bound the slits to define a plurality of ports for releasing combustible gas exteriorly of the gas burner. The ports include an entry section near the inner surface and an exit section near the outer surface. Each of the slits includes a floor that is curved upwards from the entry section to the exit section.

Claims

1. A gas burner for an appliance, including:

a chamber peripherally defined by a wall, the wall including a plurality of ports that extend therethrough and are configured to release combustible gas exteriorly of the gas burner, the ports including an entry and an exit for combustible gas, the entry corresponding to an innermost portion of the port, the exit corresponding to an outermost portion of the port, each of the ports including a floor, the floor having a surface that continuously curves upwardly from the entry to the exit such that the floor is highest at the exit, an angle formed by a tangent to the floor and a horizontal plane being greater at the exit than at the entry.

2. The gas burner of claim 1, wherein a first acute angle formed by a tangent to the floor at the exit with a horizontal plane is greater than a second acute angle formed by the tangent to the floor at the entry with the horizontal plane.

3. The gas burner of claim 2, wherein the first acute angle is about 48 degrees.

4. The gas burner of claim 2, wherein the second acute angle is zero.

5. The gas burner of claim 1, wherein the floor is concave.

6. The gas burner of claim 1, wherein the floor has a constant radius of curvature.

7. The gas burner of claim 1, wherein the gas burner is cylindrical and the ports are radially oriented.

8. The gas burner of claim 1, wherein the ports are peripherally scattered about the gas burner.

9. The gas burner of claim 1, wherein the chamber is bounded by a base and a cover placed on the base, and the ports are adapted to direct combustible gas upward toward a heated object above the cover.

10. The gas burner of claim 1, wherein the ports are vertical slits.

11. The gas burner of claim 1, wherein the acute angle formed by a tangent to the floor with a surface on which the gas burner is mounted gradually increases from the entry point toward the exit point.

12. A gas burner for an appliance, including:

a chamber peripherally defined by a wall including an inner surface and an outer surface, the wall including a plurality of ports that extend therethrough and are configured to release combustible gas exteriorly of the gas burner, the ports including an entry point at the inner surface and an exit point at the outer surface for combustible gas, the entry point corresponding to an innermost portion of the port, the exit point corresponding to an outermost portion of the port, each of the ports including a floor, the floor having a surface that continuously curves upwardly from the entry point to the exit point such that the acute angle formed by a tangent to the floor with a surface on which the gas burner is mounted gradually increases from the entry point toward the exit point and such that the floor is highest at the exit point, the exit point defined as the intersection of the floor and the outer surface of the wall.

13. A gas burner for an appliance, including:

a base including a wall peripherally formed about the base, the wall including an inner surface, an outer surface and a plurality of slits extending through the wall; and

a cover configured to be placed on the base and form a chamber in fluid communication with a gas conduit, the cover configured to bound the slits to define a plurality of ports for releasing combustible gas exteriorly of the gas burner,

wherein the chamber is configured such that the combustible gas that enters through the gas conduit is confined to the chamber prior to exiting through the ports,

wherein the ports include an entry adjacent the inner surface and an exit adjacent the outer surface, the entry corresponding to an innermost portion of the port, the exit corresponding to an outermost portion of the port, and

wherein each of the slits includes a concave-shaped floor that is continuously curved from the entry to the exit such that the acute angle formed by a tangent to the floor with a surface on which the gas burner is mounted gradually increases from the entry point toward the exit point and such that the floor is highest at the exit.

14. The gas burner of claim 13, wherein a first acute angle formed by a tangent to the floor at the exit with a horizontal plane is greater than a second acute angle formed by the tangent to the floor at the entry with the horizontal plane.

15. The gas burner of claim 14, wherein the first acute angle is about 48 degrees.

16. The gas burner of claim 13, wherein the ports are adapted to direct combustible gas upward toward a heated object above the cover.

17. A gas burner for an appliance, including:

a base including a crenellated wall peripherally formed about the base, the wall including an inner surface and an outer surface and further including crenels and merlons arranged in an alternating manner along the wall, the crenels extending through the wall and downwardly from a top of the wall; and

a cover configured to be placed on the base and form a chamber in fluid communication with a gas conduit, the cover configured to bound the crenels to define a plurality of ports for releasing combustible gas exteriorly of the gas burner,

wherein the ports include an entry section and an exit section, and the crenels include a floor such that a first acute angle formed by a tangent to the floor at the exit section with a horizontal plane is greater than a second acute angle formed by the tangent to the floor at the entry section with the horizontal plane, and

wherein each of the merlons includes recessed portion forming a horizontal slit extending through the wall, a first flow of gas is released through the crenels and a second flow of gas is released through the horizontal slits.

18. The gas burner of claim 17, wherein the floor is concave.

19. The gas burner of claim 17, wherein the first acute angle is about 48 degrees.

20. The gas burner of claim 17, wherein the crenels extend vertically.

21. The gas burner of claim 17, wherein the recessed portion is beveled near the inner face to define an entry area of the horizontal slit.

22. The gas burner of claim 17, wherein the crenels are adapted to direct combustible gas upward toward a heated object above the cover.