Burner assembly

Patent metadata

Field	Value
Publication number	US-10344969-B2
Application number	US-201715667826-A
Country	US
Kind code	B2
Filing date	Aug 3, 2017
Priority date	Aug 3, 2017
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

A burner body includes a wall that defines a combustible-gas chamber. The burner body further includes gas-flow inlet communicating with the combustible-gas chamber and a plurality of burner ports that permit combustible gas to flow from the chamber to an exterior of the burner body. The burner body further includes one or more flow restrictions configured to restrict flow through a proportion of the burner ports. When combustible gas is supplied at a first flow rate, each flow restriction is configured to restrict flow through an associated burner port at a first restriction ratio. When combustible gas is supplied at a second flow rate that is smaller than the first flow rate, each flow restriction is configured to restrict flow through its associated burner port at a second restriction ratio that is less than the first restriction ratio.

First claim

What is claimed is:

1. A burner body comprising:
a wall that defines a combustible-gas chamber;
a gas-flow inlet communicating with the combustible-gas chamber;
a plurality of burner ports in the wall that permit combustible gas to flow from the combustible-gas chamber through the plurality of burner ports to an exterior of the burner body; and
one or more flow restrictions configured to restrict flow through a proportion of the plurality of burner ports based on a rate of combustible gas being supplied to the burner body,
wherein when combustible gas is supplied to said combustible-gas chamber through the gas-flow inlet at a first flow rate, each flow restriction is configured to restrict flow through an associated burner port at a first restriction ratio, and
wherein when combustible gas is supplied to said combustible-gas chamber through the gas-flow inlet at a second flow rate that is smaller than the first flow rate, each flow restriction is configured to restrict flow through its associated burner port at a second restriction ratio that is less than the first restriction ratio.

2. The burner body according to claim 1 , wherein each flow restriction comprises one or more walls that define a flow restriction chamber and at least one inlet that provides fluid communication between the flow restriction chamber and the combustible-gas chamber, further wherein the flow restriction chamber for each flow restriction is in fluid communication with the flow restriction's associated burner port.

3. The burner body according to claim 2 , wherein each flow restriction is configured such that combustible gas flowing from the combustible-gas chamber to the flow restriction's associated burner port flows from the combustible-gas chamber, through the at least one inlet and flow restriction chamber of the flow restriction, and then into the flow restriction's associated burner port.

4. The burner body according to claim 2 , wherein the one or more walls for each flow restriction comprises a first side wall, a second side wall, and a rear wall that connects the first side wall and second side wall.

5. The burner body according to claim 4 , wherein the first side wall and second side wall each comprise an upper surface having a horizontal surface portion and a ramped surface portion.

6. The burner body according to claim 2 , wherein the at least one inlet has an inlet area that is greater than or equal to about 0.0015 square inches and less than or equal to about 0.004 square inches.

7. The burner body according to claim 2 , the flow restriction chamber has a volume that is greater than or equal to about 0.005 cubic inches and less than or equal to about 0.02 cubic inches.

8. The burner body according to claim 1 , further comprising a plurality of crossover ports defined by the wall that permit combustible gas to flow from the combustible-gas chamber through the plurality of crossover ports to an exterior of the burner body, wherein each crossover port is located between a pair of adjacent burner ports.

9. The burner body according to claim 8 , wherein each flow restriction comprises a first side wall, a second side wall, and a rear wall that define a flow restriction chamber and at least one inlet that provides fluid communication between the flow restriction chamber and the combustible gas chamber, further wherein the flow restriction chamber for each flow restriction is in fluid communication with the flow restriction's associated burner port.

10. The burner body according to claim 9 , wherein the first side wall extends inwardly from a bottom surface of a first crossover port and the second side wall extends inwardly from a bottom surface of a second crossover port.

11. The burner body according to claim 8 , wherein each crossover port is smaller in height than each burner port at an exterior surface of the outer wall.

12. The burner body according to claim 8 , wherein each crossover port is smaller in area than each burner port at an exterior surface of the outer wall.

13. The burner body according to claim 8 , wherein each crossover port is greater in width than each burner port at an exterior surface of the outer wall.

14. A burner assembly comprising:
a burner body comprising:
a wall that defines a combustible-gas chamber,
a gas-flow inlet communicating with the combustible-gas chamber,
a plurality of burner ports in the wall that permit combustible gas to flow from the combustible-gas chamber through the plurality of burner ports to an exterior of the burner body, and
one or more flow restrictions configured to restrict flow through a proportion of the plurality of burner ports based on a rate of combustible gas being supplied to the burner body; and

a burner cap placed on the burner body that delimits a top of the combustible gas chamber,
wherein when combustible gas is supplied to the burner body through the opening at a first flow rate, each flow restriction is configured to restrict flow through an associated burner port at a first restriction ratio, and
wherein when combustible gas is supplied to the burner body through the opening at a second flow rate that is smaller than the first flow rate, each flow restriction is configured to restrict flow through its associated burner port at a second restriction ratio that is less than the first restriction ratio.

15. The burner assembly according to claim 14 , wherein each flow restriction comprises a first side wall, a second side wall, and a rear wall that define a flow restriction chamber and at least one inlet that provides fluid communication between the flow restriction chamber and the combustible-gas chamber, further wherein the flow restriction chamber for each flow restriction is in fluid communication with the flow restriction's associated burner port.

16. The burner assembly according to claim 15 , wherein the first side wall and second side wall each comprise an upper surface having a horizontal surface portion and a ramped surface portion that extends inward from the horizontal surface portion in an upward direction.

17. The burner assembly according to claim 16 , wherein the burner cap comprises an undersurface having a first surface portion that mates with and engages the horizontal surface portion and a second surface portion that mates with and engages the ramped surface portion.

18. The burner assembly according to claim 17 , wherein the first surface portion and the second surface portion of the burner cap are annular.

19. The burner assembly according to claim 17 , further comprising a stability chamber defined by a pair of side walls that extend inward from the wall of the burner body and each include a horizontal upper surface portion and a ramped upper surface portion that extends inward from the horizontal upper surface portion in an upwards direction.

20. The burner assembly according to claim 19 , wherein:
the first surface portion of the burner cap also mates with and engages the horizontal upper surface portion of each of the pair of side walls, and
second surface portion of the burner cap also mates with and engages the ramped upper surface portion of each of the pair of side walls.

Assignees

• Electrolux Home Prod Inc

Inventors

• Fowler Warren
• Lewis George
• Martin Brian

Classifications

• F02C7/222

  Fuel flow conduits, e.g. manifolds · CPC title

• F23K5/005

  from a central source to a plurality of burners · CPC title

• F23D14/06 Primary

  with radial outlets at the burner head · CPC title

• F23D2900/14062

  for cooking ranges having multiple flame rings · CPC title

• F24C15/108

  Mounting of hot plate on worktop · CPC title