Cooktop swirl burner

• US 8,616,193 B2
• Filed: 06/27/2008
• Issued: 12/31/2013
• Est. Priority Date: 06/27/2008
• Status: Active Grant

• Current Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Original Assignee: Electrolux Home Products Incorporated (AB Electrolux)
• Inventors: Padgett, Michael
• Primary Examiner(s): Rinehart, Kenneth
• Assistant Examiner(s): Corboy, William
• Application Number:
  US12/147,656
• Publication Number:
  US 20090320823A1
• Time in Patent Office: 2,013 Days
• Field of Search: 431/9, 431/8, 431/354, 126/39.R, 126/39.E
• US Class Current: 126/39.E
• CPC Class Codes: F23D 14/06 with radial outlets at the burner head
• CPC Class Codes: F23D 2900/14021 Premixing burners with swirling or vortices creating means for fuel or air
• CPC Class Codes: F23D 2900/14062 for cooking ranges having multiple flame rings
• CPC Class Codes: F23D 2900/14063 for cooking ranges having one flame ring fed by multiple venturis
• CPC Class Codes: F24C 3/085 on ranges

Abstract

A gas burner for a cooking appliance is described. The gas burner includes a burner with an inner and outer wall positioned on a burner base, and a circular combustion chamber. The burner includes a plurality of angled fuel exit ports in the inner wall that swirl gaseous fuel into the combustion chamber. The burner also includes vanes on the base of the burner that swirl air drawn into the burner by convection.

Claims

1. A gas burner for a cooking appliance comprising;

a burner comprising a burner base, an inner wall, and an outer wall, wherein the burner base comprises a first upper side, a second lower side, and a hollow circular combustion chamber in the center of the burner base, the inner wall being positioned on the first upper side of the burner base along the circular center region, and the outer wall being positioned on the first upper side of the burner base outwards from the inner wall, forming an annular fuel/air channel between the inner wall and the outer wall;

a plurality of aligned angled fuel exit ports in the inner wall; and

a plurality of vanes with a first end and a second end, angled in the same direction as the fuel exit ports, wherein the first end is attached directly to the second lower side of the burner base and the second end extends beyond the inner wall and adjacent to the combustion chamber to extend into a space below the combustion chamber, such that the combustion chamber is integral with the burner base, and the plurality of vanes are attached directly to the second lower side of the burner base, and

further comprising one or more gas entry holes in the annular fuel/air channel, and one or more gas entry tubes connected to the gas entry holes and extending from the second lower side of the burner base,

further comprising a mounting base with a planar surface including one or more gas tube apertures positioned and sized to receive the gas entry tubes,

wherein the mounting base includes a securing plate and the one or more gas tube apertures are positioned in the securing plate such that they are each aligned with a gas line entry port in a support bracket, and

wherein the burner is configured to be provided on an external surface of a cooking appliance and the mounting base is secured below said external surface of said cooking appliance.

2. The gas burner of claim 1, wherein the fuel exit ports are grooves in the top of the inner wall.

3. The gas burner of claim 1, wherein the fuel exit ports and the vanes are curved to form a portion of a spiral pattern.

4. The gas burner of claim 1, further comprising a plurality of fuel exit ports in the outer wall.

5. The gas burner of claim 1, wherein the one or more gas entry holes comprise two gas entry holes positioned opposite from one another within the annular fuel/air channel.

6. The gas burner of claim 1, wherein operation of the gas burner can provide heat to a cooking vessel positioned over the gas burner with an efficiency of at least 60%.

7. The gas burner of claim 1, further comprising an igniter aperture positioned and sized to retain an igniter within the combustion chamber of the burner.

8. The gas burner of claim 7, wherein the mounting base is a substantially C-shaped structure including the securing plate and two supporting brackets, wherein two gas tube apertures are positioned in the securing plate such that they are each aligned with a gas line entry port in said support bracket.

9. The gas burner of claim 1, further comprising a plurality of fuel exit ports in the outer wall that are not angled relative to a center of the combustion chamber.

10. A gas burner for a cooking appliance comprising;

a burner comprising a burner base, an inner wall, and an outer wall, wherein the burner base comprises a first upper side, a second lower side, and a hollow circular combustion chamber in the center of the burner base, the inner wall being positioned on the first upper side of the burner base along the combustion chamber, and the outer wall being positioned on the first upper side of the burner base outwards from the inner wall, forming an annular fuel/air channel between the inner wall and the outer wall;

a plurality of angled fuel exit ports comprising grooves in the top of the inner wall that form a portion of a spiral pattern;

a plurality of curved vanes with a first end and a second end that form a portion of a spiral pattern aligned with that created by the fuel exit ports, wherein the first end is attached directly to the second lower side of the burner base and the second end extends beyond the inner wall and adjacent to the combustion chamber to extend into a space below the combustion chamber, such that the combustion chamber is integral with the burner base, and the plurality of vanes are attached directly to the second lower side of the burner base;

two gas entry holes positioned opposite from one another within the annular fuel/air channel, and two gas entry tubes connected to the gas entry holes and extending from the second lower side of the burner base,

wherein the burner is configured to be provided on an external surface of a cooking appliance;

an annular burner cap configured to fit over the annular fuel/air channel; and

a mounting base with a substantially C-shaped structure including a securing plate and two supporting brackets, wherein the securing plate comprises two gas tube apertures that are positioned and sized to receive the gas entry tubes and aligned with a gas line entry port in a support bracket and an igniter aperture positioned and sized to retain an igniter within the combustion chamber of the burner, and the mounting base is secured below said external surface of said cooking appliance.

11. The gas burner of claim 10, further comprising a plurality of fuel exit ports in the outer wall.

12. The gas burner of claim 10, wherein operation of the gas burner can provide heat to a cooking vessel positioned over the gas burner with an efficiency of at least 60%.

13. A gas burner for a cooking appliance comprising;

a burner comprising a burner base having a first upper side, a second lower side, and a hollow circular combustion chamber in the center of the burner base, a wall being positioned on the first upper side of the burner base, the wall having one or more fuel exit ports; and

a plurality of vanes with a first end and a second end, angled in the same direction relative to the combustion chamber, wherein the first end is attached directly to the second lower side of the burner base and the second end extends beyond the wall and adjacent to the combustion chamber to extend into a space below the combustion chamber, such that the combustion chamber is integral with the burner base, and

further comprising a mounting base with a planar surface including one or more gas tube apertures positioned and sized to receive gas entry tubes connected to one or more gas entry holes in an annular fuel/air channel of the burner,

wherein the planar surface includes attachment points to thereby secure the burner to an external surface of a cooking appliance such that the burner is configured to be provided on said external surface of a cooking appliance,

further comprising an igniter aperture positioned and sized to retain an igniter within the combustion chamber of the burner, and

wherein the mounting base is a substantially C-shaped structure including a securing plate and two supporting brackets, wherein two gas tube apertures that are positioned in the securing plate such that they are each aligned with a gas line entry port in a support bracket.

14. The gas burner of claim 13, wherein the vanes are curved.

15. The gas burner of claim 14, wherein the vanes form a portion of a spiral pattern.

16. The gas burner of claim 14, wherein the vanes further comprise oblong rectangular strips.