Gas burner assembly for a cooktop appliance

Patent metadata

Field	Value
Publication number	US-11460190-B2
Application number	US-201916524556-A
Country	US
Kind code	B2
Filing date	Jul 29, 2019
Priority date	Jul 29, 2019
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A gas burner assembly for a cooktop appliance includes a flame ring comprising a plurality of flame ports arranged in an annular array. An outer ring and an inner ring collectively define each flame port of the plurality of flame ports. The outer ring and the inner ring are concentrically aligned and concentrically mated. As a result of this arrangement of the outer ring and the inner ring, the plurality of flame ports are defined by the outer ring and the inner ring. The plurality of flame ports extend radially between the inner ring and the outer ring.

First claim

What is claimed is:

1. A gas burner assembly for a cooktop appliance, the gas burner assembly defining an axial direction, a radial direction perpendicular to the axial direction, and a circumferential direction extending around the axial direction, the gas burner assembly comprising:
an inner ring;
an outer ring adjoining the inner ring outward of the inner ring along the radial direction, wherein the outer ring and the inner ring are concentrically aligned and concentrically mated;
a plurality of flame ports arranged in an annular array and defining a flame ring of the gas burner assembly, each flame port of the plurality of flame ports collectively defined by and between the outer ring and the inner ring, each flame port of the plurality of flame ports extending continuously outward along the radial direction from an inlet defined by the inner ring to a joint between the inner ring and the outer ring and from the joint between the inner ring and the outer ring to an outlet defined by the outer ring, wherein the outer ring comprises a plurality of first fins and the inner ring comprises a plurality of second fins, each first fin of the plurality of first fins on the outer ring radially aligned and coplanar with a corresponding one second fin of the plurality of second fins on the inner ring, whereby each flame port of the plurality of flame ports is defined between adjacent pairs of aligned first fins and second fins;
a projection on one of the inner ring and the outer ring; and
a recess on the other of the inner ring and the outer ring, wherein the projection and the recess are mated together to restrict relative rotation between the inner ring and the outer ring.

2. The gas burner assembly of claim 1 , wherein each flame port of the plurality of flame ports comprises an inner portion defined by the inner ring and an outer portion defined by the outer ring, wherein a bottom channel of each flame port of the plurality of flame ports comprises a linear profile in an axial-radial plane across the outer portion of each flame port and a curvilinear profile in the axial-radial plane across the inner portion of each flame port.

3. The gas burner assembly of claim 2 , wherein the curvilinear profile of the inner portion of each flame port of the plurality of flame ports comprises a compound curvature.

4. The gas burner assembly of claim 1 , wherein the outer ring comprises a first material and the inner ring comprises a second material different from the first material.

5. The gas burner assembly of claim 4 , wherein the first material comprises brass.

6. The gas burner assembly of claim 1 , wherein the outer ring is a forged and machined part and the inner ring is a die cast part.

7. The gas burner assembly of claim 6 , wherein each flame port of the plurality of flame ports comprises an inner portion defined by the inner ring and an outer portion defined by the outer ring, wherein the outer ring is machined using a slit mill to form the outer portion of each flame port using only a linear slit tool path, whereby a bottom channel of each flame port of the plurality of flame ports comprises a linear profile in an axial-radial plane across the outer portion of each flame port.

8. The gas burner assembly of claim 6 , wherein each flame port of the plurality of flame ports comprises an inner portion defined by the inner ring and an outer portion defined by the outer ring, wherein the inner ring is die cast such that a bottom channel of each flame port of the plurality of flame ports comprises a curvilinear profile in an axial-radial plane across the inner portion of each flame port.

9. The gas burner assembly of claim 1 , wherein the plurality of flame ports are a plurality of boost flame ports spaced about the circumferential direction and in fluid communication with a boost burner chamber, and wherein the gas burner assembly further comprises a plurality of primary flame ports spaced about the circumferential direction and in fluid communication with a primary burner chamber, the primary flame ports being positioned below the boost flame ports along the axial direction.

10. The gas burner assembly of claim 9 , further comprising a primary air inlet extending about the circumferential direction above a top panel of the cooktop appliance, the primary air inlet being in fluid communication with an air entrainment chamber that is separated from the primary burner chamber by a divider wall, and wherein a primary fuel inlet sprays fuel through a hole defined in the divider wall such that ambient air is entrained with the fuel and drawn into the primary burner chamber.

11. The gas burner assembly of claim 10 , wherein the air entrainment chamber is positioned below the primary burner chamber and the primary fuel inlet discharges a mixture of fuel and air proximate the top of the primary burner chamber.

12. A cooktop appliance, comprising:
a top panel; and
a gas burner assembly positioned on the top panel, the gas burner assembly defining an axial direction, a radial direction perpendicular to the axial direction, and a circumferential direction extending around the axial direction, the gas burner assembly comprising:
an inner ring;
an outer ring adjoining the inner ring outward of the inner ring along the radial direction, wherein the outer ring and the inner ring are concentrically aligned and concentrically mated;
a plurality of flame ports arranged in an annular array and defining a flame ring of the gas burner assembly, each flame port of the plurality of flame ports collectively defined by and between the outer ring and the inner ring, each flame port of the plurality of flame ports extending continuously outward along the radial direction from an inlet defined by the inner ring to a joint between the inner ring and the outer ring and from the joint between the inner ring and the outer ring to an outlet defined by the outer ring, wherein the outer ring comprises a plurality of first fins and the inner ring comprises a plurality of second fins, each first fin of the plurality of first fins on the outer ring radially aligned and coplanar with a corresponding one second fin of the plurality of second fins on the inner ring, whereby each flame port of the plurality of flame ports is defined between adjacent pairs of aligned first fins and second fins;
a projection on one of the inner ring and the outer ring; and
a recess on the other of the inner ring and the outer ring, wherein the projection and the recess are mated together to restrict relative rotation between the inner ring and the outer ring.

13. The cooktop appliance of claim 12 , wherein each flame port of the plurality of flame ports comprises an inner portion defined by the inner ring and an outer portion defined by the outer ring, wherein a bottom channel of each flame port of the plurality of flame ports comprises a linear profile in an axial-radial plane across the outer portion of each flame port and a curvilinear profile in the axial-radial plane across the inner portion of each flame port.

14. The cooktop appliance of claim 13 , wherein the curvilinear profile of the inner portion of each flame port of the plurality of flame ports comprises a compound curvature.

15. The cooktop appliance of claim 12 , wherein the outer ring comprises a first material and the inner ring comprises a second material different from the first material.

16. The cooktop appliance of claim 12 , wherein the outer ring is a forged and machined part and the inner ring is a die cast part.

17. The cooktop appliance of claim 16 , wherein each flame port of

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Cadima Paul Bryan

Classifications

• F23D14/06 Primary

  with radial outlets at the burner head · CPC title

• F24C3/082

  on stoves · CPC title

• F24C3/085

  on ranges · CPC title

• F23D14/84

  Flame spreading or otherwise shaping (F23D14/70 takes precedence) · CPC title

• F24C3/10

  Arrangement or mounting of ignition devices · CPC title