Pedestal for a burner of a household appliance

Patent metadata

Field	Value
Publication number	US-10655844-B2
Application number	US-36849309-A
Country	US
Kind code	B2
Filing date	Feb 10, 2009
Priority date	Feb 10, 2009
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A gas burner of a household cooking appliance is provided. The gas burner includes a burner portion, and a pedestal portion under the burner portion for elevating the burner portion above a cooktop surface of the household cooking appliance. The pedestal portion includes a base portion for mounting with the cooktop surface of the household cooking appliance, and an upper portion that interposes the base portion and the burner portion, and interfaces with the burner portion. A perimeter of the base portion has no mathematical correlation to one of a perimeter of the burner portion and a perimeter of the upper portion.

First claim

What is claimed is:

1. A sealed gas burner for a household cooking appliance, the gas burner comprising:
a burner portion having a plurality of burner ports; and
a pedestal portion under the burner portion for elevating the burner portion above a cooktop surface of the household cooking appliance,
wherein the pedestal portion includes:
a base portion having a lower mounting; and
an upper portion having an upper end that supports the burner,
wherein the lower mounting surface is on an opposite side of the pedestal portion from the upper portion,
wherein the base portion elevates the upper portion in a vertical direction above the cooktop surface,
wherein an area of a footprint of the lower mounting surface is less than an area of a footprint of the upper end of the pedestal portion,
wherein a periphery of the base portion increases continuously in a vertical direction from the lower mounting surface up to the upper portion and a periphery of the upper portion increases in a vertical direction from the base portion up to the upper portion in order to promote airflow of secondary air in the vertical direction along an outer surface of the periphery of the base portion and an outer surface of the periphery of the upper portion up to the plurality of burner ports of the burner portion,
wherein the periphery of the base portion is less than the periphery of the upper portion, and
wherein the base portion includes a first cavity extending upward through the base portion, and the first cavity facilitates a flow of an air-gas mixture through the base portion.

2. The gas burner according to claim 1 , wherein a length of a perimeter of the lower mounting surface of the base portion is less than a length of a perimeter of the upper end of the upper portion.

3. The gas burner according to claim 1 , wherein the lower mounting surface is in a first horizontal plane,
wherein a vertical axis of the pedestal portion is substantially perpendicular to the first horizontal plane,
wherein the first cavity extends through the base portion along the vertical axis of the pedestal portion,
wherein the first cavity facilitates the flow of the air-gas mixture through the pedestal portion to the burner portion.

4. The gas burner according to claim 3 , further comprising: a venturi tube,
wherein the venturi tube is one of in fluid communication with the first cavity and disposed in the first cavity.

5. The gas burner according to claim 3 , wherein the pedestal portion includes:
a second cavity that facilitates a flow of air through the base portion.

6. The gas burner according to claim 5 , wherein the second cavity includes:
a first flow passage; and
a second flow passage in fluid communication with the first flow passage, wherein the first flow passage extends through the pedestal portion in a direction substantially parallel to the vertical axis of the pedestal portion, and
wherein the second flow passage extends through the upper portion in a direction substantially parallel to the first horizontal plane and toward a perimeter of the burner portion.

7. The gas burner according to claim 5 , wherein an interior surface of the second cavity is one of tapered and curved with respect to the first horizontal plane.

8. The gas burner according to claim 5 , wherein an interior surface of the second cavity is one of parallel to and perpendicular to the first horizontal plane.

9. The gas burner according to claim 5 , wherein the upper portion of the pedestal has one of an opening and a slot that fluidly connects the second cavity to an exterior of the pedestal.

10. The gas burner according to claim 9 , wherein the one of the opening and the slot of the upper portion is adjacent to a burner port of the plurality of burner ports of the burner portion.

11. The gas burner according to claim 1 , wherein an exterior surface of the pedestal portion has one of a curved surface and a tapered surface that promotes a flow of air in a direction extending toward a burner port of the burner portion.

12. The gas burner according to claim 1 , wherein the pedestal portion is integrally formed with the burner portion.

13. The gas burner according to claim 1 , wherein the burner portion has a plurality of finger portions, and
wherein the upper portion includes a plurality of finger portions corresponding to the plurality of finger portions of the burner portion.

14. The gas burner according to claim 13 , wherein the base portion includes an ignitor mounting surface for receiving a burner ignitor, and
wherein the ignitor mounting surface extends radially from the base portion and between two adjacent fingers of the plurality of finger portions of the upper portion.

15. The gas burner according to claim 1 , wherein the base portion includes an ignitor mounting surface for receiving a burner ignitor.

16. A pedestal for supporting a gas burner of a household cooking appliance in an elevated position above a surface of a cooktop of the household appliance, the pedestal comprising:
a base portion, the base portion for vertically elevating an upper portion of the pedestal above the surface of the cooktop and having both a lower mounting surface configured to mount to the cooktop and a maximum perimeter of the footprint of the base portion that is smaller than a maximum perimeter of the footprint of the upper portion;
a burner body support surface at an upper-most end of the pedestal configured to support a burner body of the gas burner and to vertically elevate the burner body above the surface of the cooktop; and
a first cavity extending entirely through the base portion and the upper portion from the lower mounting surface of the base portion to the upper-most end of the upper portion, wherein the first cavity facilitates a flow of an air-gas mixture through the base portion and the upper portion to the burner body of the gas burner.

17. The pedestal according to claim 16 , wherein the lower mounting surface is in a first horizontal plane, and
wherein a vertical axis of the base portion extends substantially perpendicular to the first horizontal plane.

18. The pedestal according to claim 17 , wherein the first cavity is integrally formed with a venturi tube for facilitating the flow of the air-gas mixture from a mixing zone below the surface of the cooktop through the base portion and into the burner body of the gas burner.

19. The pedestal according to claim 17 , further comprising:
a venturi tube for facilitating the flow of the air-gas mixture from a mixing zone below the surface of the cooktop through the base portion and the upper portion and into the gas burner,
wherein the venturi tube is one of in fluid communication with the first cavity and disposed in the first cavity.

20. The pedestal according to claim 17 , further comprising a second cavity extending through at least the base portion, the second cavity facilitating a flow of air through the base portion.

21. The pedestal according to claim 20 , wherein the second cavity includes:
a first flow passage extending through the base portion in a direction substantially parallel to the vertical axis of the base portion; and
a second flow passage in fluid communication with the first flow passage and extending through the upper portion in a direction toward the maximum perimeter of the upper portion.

22. The pedestal according to claim 20 , wherein an interior surface of the second cavity is one of tapered and curved.

2

Assignees

• Adams David
• Braden Ben
• Dorsten Russell
• Grey Jonathan
• Hendricks Donald
• Hill Chris
• Nowak David
• Russell Tim
• Sadtler Graham
• Springer Phil
• Bsh Home Appliances Corp

Inventors

• Adams David
• Braden Ben
• Dorsten Russell
• Grey Jonathan
• Hendricks Donald
• Hill Chris
• Nowak David
• Russell Tim
• Sadtler Graham
• Springer Phil

Classifications

• F23D14/06 Primary

  with radial outlets at the burner head · CPC title

• F23D2900/14064

  Burner heads of non circular shape · CPC title

• F23D2900/14042

  Star shaped assembly of burner bars or arms · CPC title