Inner swirling flame gas burner

Patent metadata

Field	Value
Publication number	US-9541294-B2
Application number	US-201313959775-A
Country	US
Kind code	B2
Filing date	Aug 6, 2013
Priority date	Aug 6, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A gas burner having a combustion chamber with a bottom and a circumferential wall. A plurality of fuel exit ports are disposed in the circumferential wall, and are directed generally inwardly toward the combustion chamber and upwardly from the bottom of the combustion chamber. The fuel exit ports are preferably directed inwardly at an angle that is slightly rotated from a central axis of the burner to create a swirling flame. A plurality of secondary air inlets extend through the bottom of the combustion chamber. An injector orifice is aligned with the central axis of the burner. The injector orifice is secured to the cooktop using a bracket, which has an orifice-securing surface, with two sidewalls extending therefrom and terminating in fastening flanges. The fastening flanges have asymmetrically arranged slots therein to receive tabs extending from the burner to ensure proper alignment of the burner and the injector orifice.

First claim

What is claimed is:

1. A gas burner, comprising:
a combustion chamber having a bottom and a circumferential wall;
a plurality of fuel exit ports disposed in the circumferential wall, the ports adapted to direct fuel generally inwardly toward the combustion chamber and upwardly from the bottom of the combustion chamber, wherein each fuel exit port includes a substantially vertical wall extending upward at a first angle and an opposing angled wall extending upward at a second angle, the second angle being greater than the first angle to form an asymmetrical fuel exit port; and
a plurality of secondary air inlets extending through the bottom of the combustion chamber.

2. The gas burner of claim 1 , wherein the ports are directed inwardly at an angle that is slightly rotated from a radial line through the center of the burner to create a swirling flame, wherein the opposing angled wall is angled away from the center of the burner to further create the swirling flame.

3. The gas burner of claim 1 , wherein the combustion chamber is defined by a burner assembly, and wherein the burner assembly is elevated off of a cooktop to allow air to pass under the burner assembly.

4. The gas burner of claim 3 , wherein the burner assembly has a plurality of feet to support the burner assembly above the cooktop.

5. The gas burner of claim 1 , further comprising a mixing chamber, wherein the mixing chamber is disposed below the combustion chamber, and wherein the secondary air inlets extend through the mixing chamber.

6. The gas burner of claim 5 , further comprising:
a burner base; and
a swirl spreader disposed above the burner base, wherein the mixing chamber is disposed between the burner base and swirl spreader, and wherein the swirl spreader includes downwardly depending cylinders which extend through the mixing chamber to apertures in the burner base to define secondary air inlets.

7. The gas burner of claim 1 , further comprising:
an injector orifice aligned with a central axis of the burner.

8. The gas burner of claim 1 , further comprising:
a burner base;
a swirl spreader which is disposed above the burner base, and which defines the bottom and the circumferential wall of the combustion chamber; and
an annular burner cap which is disposed on a top portion of the circumferential wall and which, together with the swirl spreader, defines the fuel exit ports in the circumferential wall.

9. A gas burner for a cooktop, comprising:
a plurality of fuel exit ports disposed about a circumference of the burner, the ports directed generally inwardly and upwardly from a horizontal plane to generate an inwardly directed flame, wherein each fuel exit port includes a substantially vertical wall and an opposing angled wall, wherein each opposing angled wall of the fuel exit ports angles away from a vertical axis of the burner; and
an injector orifice aligned with a central axis of the burner.

10. The gas burner of claim 9 , wherein the ports are directed inwardly at an angle that is slightly rotated from a radial line through the center of the burner to create a swirling flame, and wherein each fuel exit port includes a flared end positioned at an interior side of the burner that opens into a combustion chamber of the burner.

11. The gas burner of claim 9 , wherein the injector orifice is secured by a bracket secured to an underside of the cooktop.

12. The gas burner of claim 9 , wherein the injector orifice directs gas into a stem of a spreader assembly, wherein the stem of the spreader assembly is operably coupled to a mixing chamber, and wherein the mixing chamber is operably connected to a combustion chamber by the fuel exit ports.

13. The gas burner of claim 12 , wherein the mixing chamber includes a bottom portion which is disposed below the combustion chamber and a peripheral portion which is disposed radially outwardly from the combustion chamber.

14. The gas burner of claim 13 , further comprising:
an annular burner cap which seals a top edge of the peripheral portion of the mixing chamber.

15. The gas burner of claim 13 , wherein the combustion chamber further includes secondary air inlets, which allow the passage of ambient air into the combustion chamber.

16. The gas burner of claim 15 , wherein the secondary air inlets extend through the mixing chamber, and prevent fluid communication between gas in the mixing chamber and air in the secondary air inlets.

Assignees

• Whirlpool Co

Inventors

• Angulo Jorge Richard

Classifications

• F23D14/06 Primary

  with radial outlets at the burner head · CPC title

• F23D14/64

  with injectors · CPC title

• F23D2203/1017

  curved · CPC title

• F23D14/583

  of elongated shape, e.g. slits · CPC title

• F24C15/108

  Mounting of hot plate on worktop · CPC title