Gas burner

Patent metadata

Field	Value
Publication number	US-11359818-B2
Application number	US-201916704189-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	Dec 7, 2018
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A gas burner includes a base with a first body and a raised annular band on an upper surface of the first body. A flange is formed about an outer periphery of the first body wherein the raised annular band and the flange define a first annular recess therebetween. A first notch is formed in a lower surface of the first body and extends through the flange and communicates with the first annular recess. The first notch is adapted to accommodate spark ignitor therein. A slot is formed in the raised annular band. A first cap includes a peripheral side wall having a distal end dimensioned to be received within the first annular recess. A gap between the distal end and a bottom wall of the first annular recess when the first cap is received therein provides fluid communication between the slot and the first notch.

First claim

What is claimed is:

1. A gas burner comprising:
a base including:
a first body having an opening extending axially through the first body,
a raised annular band formed on an upper surface of the first body and surrounding an outlet of the opening,
a flange about an outer periphery of the first body wherein the raised annular band and the flange define a first annular recess therebetween,
a first notch formed in a lower surface of the first body extending through said flange and communicating with said first annular recess, said first notch adapted to accommodate a spark ignitor therein and defining a bridge having a spark target disposed on a bottom surface of the bridge, and
a slot formed in the raised annular band; and

a first cap including:
a peripheral side wall having a distal end dimensioned to be received and accommodated within said first annular recess, wherein a gap between said distal end and a bottom wall of the first annular recess when said first cap is received therein provides fluid communication between said slot and said first notch, and
a gas burner port formed in the peripheral side wall of the first cap.

2. The gas burner according to claim 1 , further comprising:
a second notch formed in an upper portion of said flange; and
a stability chamber extending from the lower surface of said first body aligned with the second notch.

3. The gas burner according to claim 2 , wherein a plurality of stand-offs protrude from the bottom wall of the first annular recess and the distal end of the peripheral side wall rests on the stand-offs to yield said gap when received in the first annular recess, and two of the plurality of stand-offs are disposed adjacent to opposite sides of the second notch.

4. The gas burner according to claim 1 , further comprising an outer burner portion comprising:
a second, outer body surrounding the first body and having a second annular recess therein, and
a second, outer cap adapted to be supported on said second, outer body and therewith to define an outer annular cavity, a row of gas burner ports extending radially in an upper surface of the second, outer cap and fluidly communicating with the outer annular cavity, and a plurality of gas burner ports disposed and spaced circumferentially in an outer wall of the second, outer cap.

5. The gas burner according to claim 4 ,
said second, outer body being a ring-shaped body having an inner wall, an outer wall, and an inlet port, and
said second, outer cap having an outer wall engaging the outer wall of the ring-shaped body when resting thereon, and a downward facing inner wall engaging the inner wall of the ring-shaped body when resting thereon.

6. An appliance having a cooktop panel and the gas burner of claim 4 mounted on the cooktop panel,
the first and second bodies of the gas burner having respective first and second lower surfaces spaced above the cooktop panel to define a circumferential air inlet of the gas burner fluidly connected to the opening extending axially through the base.

7. The appliance according to claim 6 , wherein a plurality of stand-offs protrude from the bottom wall of the first annular recess and the distal end of the peripheral side wall of the first cap rests on the stand-offs to space the distal end of the peripheral side wall of the first cap above a bottom of the first annular recess to thereby yield said gap.

8. The appliance according to claim 6 , further comprising:
a second notch formed in an upper portion of said flange; and
a stability chamber extending from the lower surface of said first body and aligned with the second notch.

9. The gas burner according to claim 1 , comprising a plurality of gas burner ports formed and spaced circumferentially in the peripheral side wall of the first cap, wherein in use a curtain flame emanating from said gap and formed about an outer periphery of the first cap is continuous between at least two of said gas burner ports in the peripheral side wall of said first cap.

10. The gas burner according to claim 1 , wherein in use a curtain flame emanating from said gap and formed about an outer periphery of the first cap is continuous around the entire periphery of the first cap.

11. An appliance having a cooktop panel and the gas burner of claim 1 mounted on the cooktop panel.

12. The appliance according to claim 11 , wherein a lower surface of the first body is spaced above the cooktop panel to provide fluid communication between a surrounding environment and the opening extending axially through the first body.

13. A gas burner comprising:
a base including:
a first body having an opening extending axially through the first body,
a raised annular band formed on an upper surface of the first body and surrounding an outlet of the opening,
a flange about an outer periphery of the first body wherein the raised annular band and the flange define a first annular recess therebetween,
a plurality of stand-offs protruding from a bottom wall of the first annular recess,
a first notch formed in a lower surface of the first body extending through said flange and communicating with said first annular recess, said first notch adapted to accommodate a spark ignitor therein, and
a slot formed in the raised annular band; and

a first cap including:
a peripheral side wall having a distal end dimensioned to be received and accommodated within said first annular recess, wherein a gap between said distal end and the bottom wall of the first annular recess when said first cap is received therein provides fluid communication between said slot and said first notch and the distal end of the peripheral side wall rests on the stand-offs to yield said gap when received in the first annular recess, and
a gas burner port formed in the peripheral side wall of the first cap.

14. The gas burner according to claim 13 , wherein two of the plurality of stand-offs are disposed adjacent to opposite sides of the first notch.

15. A method of operating a gas burner comprising steps of:
flowing a combustible gas through a mixing chamber formed in a body of the gas burner wherein the combustible gas draws surrounding air into the mixing chamber through a circumferential opening defined between a bottom of the body and a top of a cooktop panel to which the gas burner is mounted;
combining the combustible gas and air in the mixing chamber to form a mixture;
flowing the mixture to an upper volume of the gas burner;
a first portion of the mixture being exhausted from the upper volume via a first flow path passing through at least one gas burner port formed in a cap of the gas burner, a second portion of the mixture being exhausted from the upper volume via a second flow path passing through a slot formed in an upper surface of the body and then through a notch formed in a lower surface of the body of the gas burner, the notch defining a bridge having a spark target disposed on a bottom surface thereof, and a third portion of the mixture being exhausted from the upper volume via a gap between a distal end of a side wall of said cap and the upper surface of the body, said cap resting on or above said upper surface; and
igniting the second portion of the mixture on exiting the gas burner through said notch, thereby subsequently igniting the first portion of the mixture exiting the gas burner port and the third portion of the mixture exiting the gap.

16. The method of claim 15 wherein the third portion of the mixture exiting the gas burner via the gap forms a curtain flame extending circumferentially between adjacent circumferentially spaced ones o

Assignees

• Electrolux Home Prod Inc

Inventors

• Martin Brian
• Padgett Michael Dennis
• Fowler Warren

Classifications

• F23D2900/14062

  for cooking ranges having multiple flame rings · CPC title

• F24C3/085

  on ranges · CPC title

• F24C3/082 Primary

  on stoves · CPC title

• F23D14/06 Primary

  with radial outlets at the burner head · CPC title

• F23D14/02

  Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone · CPC title