Multi injection dual ring gas burner for domestic gas cooking units

Patent metadata

Field	Value
Publication number	US-11940148-B2
Application number	US-202117512817-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Oct 28, 2021
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

The present disclosure is related to a dual ring gas burner wherein the outer ring includes multipoint injection with bottom breathing and the inner ring works with top breathing. Two flame rings are included along with burner ports on the caps. As a result, better heating distribution is achieved along with greater ease in cleaning and combined simmer functions with high ratings by having the outer ring gas flow not interfering with the inner ring.

First claim

What is claimed is:

1. A dual gas burner for a cooking hob having a cooktop panel,
the dual gas burner comprising:
an inner burner configured to receive gas from below the cooktop panel and combustible air from above the cooktop panel, the inner burner comprising a central burner cap having a plurality of gas ports configured to pass gas and combustible air, the central burner cap arranged on a crown inlet configured to cooperate with a mixing chamber so as to receive gas from the mixing chamber and combustible air from outside the mixing chamber below the central burner cap, wherein the mixing chamber is arranged below the cooktop panel and the crown inlet is arranged above the cooktop panel so as to define an opening through which the combustible air passes to the crown inlet; and
an outer annular burner configured to receive gas and combustible air from below the cooktop panel.

2. The dual gas burner according to claim 1 , wherein the central burner cap is further arranged on the crown inlet so as to define a gap between the central burner cap and the crown inlet configured to pass gas and combustible air defining a curtain flame.

3. The dual gas burner according to claim 1 , wherein the outer annular burner comprises an outer annular burner cap defining a central opening for accommodating a central burner cap therein, the outer annular burner cap arranged to cooperate with a plurality of crown ports extending below the cooktop panel and configured to introduce a combination of gas and combustible air from below the outer annular burner cap.

4. The dual gas burner according to claim 3 , wherein the plurality of crown ports comprise slopped surfaces configured and arranged to avoid turbulence of the gas and combustible air passing through the plurality of crown ports below the outer annular burner cap.

5. The dual gas burner according to claim 4 , wherein the outer annular burner cap is further arranged on a crown so as to define a gap between the outer annular burner cap and the crown configured to pass gas and combustible air defining a curtain flame.

6. The dual gas burner according to claim 5 , wherein the crown further comprises a radial spoke connection arranged between each of the crown ports and a central ring arranged to support the central burner cap.

7. The dual gas burner according to claim 1 , further comprising a first gas inlet and a first connecting passage configured to deliver gas to the inner burner and a second gas inlet and a second passage configured to deliver gas to the outer annular burner, wherein the first gas inlet and the second gas inlet are configured to be at least one of individually of combined controlled so as to selective limit a supply of gas into at least one of the first gas inlet and the second gas inlet.

8. The dual gas burner according to claim 7 , further comprising a plurality of nozzles arranged in connection with the second passage such that gas flows into at least one of the plurality of nozzles from the second passage, and wherein one of the plurality of nozzles is arranged adjacent a crown port such that a jet of gas exiting the one of the plurality of nozzles enters the crown port drawing with it air by virtue of a Venturi effect.

9. The dual gas burner according to claim 1 , further comprising:
a spark igniter arranged to ignite gas and combustible air being introduced under a central burner cap; and
a flame passage configured to pass a flame and arranged to ignite gas and combustible air being introduced under an outer annular burner cap with the flame.

10. A dual gas burner for a gas cooking hob having a cooktop surface, the dual gas burner having an inner burner arranged within an outer annular burner, and the dual gas burner comprising:
a burner body arranged below the cooktop surface, the burner body comprising a mixing chamber arranged to be supplied with gas from a first gas inlet and a plurality of burner body inlets to be supplied with gas from a second gas inlet,
a crown arranged above the cooktop surface, the crown comprising a crown inlet extending in a downward direction and arranged to cooperate with the mixing chamber so as to receive gas from the mixing chamber, and a plurality of ports extending in a downward direction and arranged to cooperate with the plurality of burner body inlets so as to receive gas from the plurality of burner body inlets;
a central burner cap having a plurality of gas ports and arranged atop the crown inlet;
an outer annular burner cap defining an internal opening for accommodating the central burner cap therein and arranged atop and circumferentially about the crown; and
wherein the crown inlet is further arranged to receive combustible air from outside the mixing chamber and above the cooktop surface, and the plurality of ports are arranged to receive combustible air from below the cooktop surface,
wherein the combustible air for the inner burner is drawn from a location isolated from where the combustible air for the outer annular burner is drawn.

11. The dual gas burner according to claim 10 , wherein:
the central burner cap further comprises a plurality of gas ports configured to pass gas and combustible air, the central burner cap further arranged on the crown inlet configured to cooperate with the mixing chamber so as to receive gas from the mixing chamber and combustible air from outside the mixing chamber below the central burner cap; and
the central burner cap is further arranged on the crown inlet so as to define a gap between the central burner cap and the crown configured to pass gas and combustible air defining a curtain flame.

12. The dual gas burner according to claim 10 , wherein:
the mixing chamber is arranged below the cooktop surface; and
the crown is arranged above the cooktop surface so as to define an opening through which the combustible air passes to the crown inlet.

13. The dual gas burner according to claim 10 , wherein:
the outer annular burner cap is configured to pass gas and combustible air, the outer annular burner cap arranged to cooperate with the plurality of ports extending below the cooktop surface and configured to introduce a combination of gas and combustible air below the outer annular burner cap.

14. The dual gas burner according to claim 13 , wherein the plurality of ports comprise slopped surfaces arranged to avoid turbulence of the gas and combustible air passing through the ports below the outer annular burner cap.

15. The dual gas burner according to claim 14 , wherein the outer annular burner cap is further arranged on the crown so as to define a gap between the outer annular burner cap and the crown configured to pass gas and combustible air defining a curtain flame.

16. The dual gas burner according to claim 15 , wherein the crown further comprises a radial spoke connection arranged between each of the plurality of ports and a central ring arranged to support the central burner cap.

17. The dual gas burner according to claim 16 , further comprising:
a first gas inlet,
a first connecting passage configured to deliver gas to the crown inlet,
a second gas inlet, and
a second passage configured to deliver gas to the plurality of ports, and
wherein the first gas inlet and the second gas inlet are individually controlled so as to selectively limit a supply of gas into the first gas inlet and the second gas inlet.

18. The dual gas burner according to claim 17 , further comprising:
a plurality of nozzles arranged in connection with the second passage such that gas flows into the plurality of nozzles f

Assignees

• Electrolux Appliances AB

Inventors

• Tan Zhi
• Liu Huan
• Garcia Andre
• Padgett Michael Dennis

Classifications

• F23D14/065 Primary

  with injector axis inclined to the burner head axis · CPC title

• F23D14/085

  with injector axis inclined to the burner head axis · CPC title

• F23D2203/102

  using perforated plates · CPC title

• F23D2213/00

  Burner manufacture specifications · CPC title

• F23D2900/14062

  for cooking ranges having multiple flame rings · CPC title