Boosted gas burner assembly and a method of operating the same

Patent metadata

Field	Value
Publication number	US-10830451-B2
Application number	US-201815949139-A
Country	US
Kind code	B2
Filing date	Apr 10, 2018
Priority date	Apr 10, 2018
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

A gas burner assembly for a cooktop appliance and a method for operating the same are provided. The gas burner assembly includes a normally aspirated primary burner, a concentrically-positioned forced air boost burner, a boost valve for regulating a flow of boost fuel to the boost burner, and a forced air supply source for providing a flow of air to the boost burner. The method includes activating the boost burner upon receiving a command and starting a timer. After a predetermined amount of time has passed, e.g., such as ten minutes, the boost burner is extinguished by closing the boost valve to prevent unsafe operating conditions.

First claim

What is claimed is:

1. A gas burner assembly for a cooktop appliance, the gas burner assembly comprising:
a primary burner comprising a plurality of primary flame ports in fluid communication with a primary fuel chamber for receiving a flow of primary fuel;
a boost burner comprising a plurality of boost burner ports in fluid communication with a boost fuel chamber for receiving a flow of boost fuel;
a boost valve for regulating the flow of boost fuel to the boost fuel chamber;
a forced air supply source for selectively urging a flow of air into the boost fuel chamber;
a boost button for generating a command to activate the boost burner; and
a controller operably coupled to the boost button, the boost valve, and the forced air supply source, the controller being configured for:
receiving the command to activate the boost burner;
activating the boost burner upon receiving the command to activate the boost burner; and
extinguishing the boost burner when a predetermined amount of time has passed since activating the boost burner.

2. The gas burner assembly of claim 1 , comprising:
a control valve operably coupled to a fuel supply line for regulating a flow of supply fuel.

3. The gas burner assembly of claim 2 , comprising:
a control knob operably coupled to the control valve and being rotatable for controlling a position of the control valve.

4. The gas burner assembly of claim 2 , wherein the control valve is generally configured for regulating the flow of primary fuel into the primary fuel chamber and the flow of boost fuel into the boost fuel chamber when the boost valve is open.

5. The gas burner assembly of claim 1 , wherein an operating speed of the forced air supply source is fixed and a flow rate of the flow of boost fuel is fixed when the boost valve is open, such that a firing rate of the boost burner ports is fixed.

6. The gas burner assembly of claim 1 , wherein the primary flame ports are positioned concentric with and below the boost flame ports.

7. The gas burner assembly of claim 1 , wherein the primary flame ports are naturally aspirated.

8. The gas burner assembly of claim 1 , wherein the forced air supply source is a fan, an air pump, or an air compressor.

9. The gas burner assembly of claim 1 , wherein the controller is further configured for:
determining that the primary burner is ignited before activating the boost burner.

10. The gas burner assembly of claim 1 , wherein the boost valve is a pressure controlled valve operably coupled with the forced air supply source, the pressure controlled valve configured for stopping the flow of boost fuel when a pressure of the flow of air drops below a predetermined threshold.

11. A method for operating a gas burner assembly, the gas burner assembly including a primary burner positioned concentrically below a boost burner, a boost valve for regulating a flow of boost fuel to a boost fuel chamber, a boost button, and a forced air supply source for selectively urging a flow of air into the boost fuel chamber, the method comprising:
receiving a command to activate the boost burner, the command to activate the boost burner being received when the boost button is pressed;
activating the boost burner upon receiving the command to activate the boost burner; and
extinguishing the boost burner when a predetermined amount of time has passed since activating the boost burner.

12. The method of claim 11 , comprising:
determining that the primary burner is ignited before activating the boost burner.

13. The method of claim 11 , wherein activating the boost burner comprises:
opening the boost valve to permit the flow of boost fuel into the boost fuel chamber; and
activating the forced air supply source to urge the flow of air into the boost fuel chamber.

14. The method of claim 11 , wherein extinguishing the boost burner comprises:
closing the boost valve to stop the flow of boost fuel to the boost fuel chamber; and
deactivating the forced air supply source to stop the flow of air to the boost fuel chamber.

15. The method of claim 11 , wherein the predetermined amount of time is approximately ten minutes.

16. The method of claim 11 , further comprising:
receiving a command to turn off the boost burner; and
extinguishing the boost burner upon receiving the command to turn off the boost burner.

17. The method of claim 11 , wherein the boost valve is a pressure controlled valve operably coupled with the forced air supply source, the pressure controlled valve configured for stopping the flow of boost fuel when a pressure of the flow of air drops below a predetermined threshold.

18. The method of claim 17 , wherein the predetermined threshold is less than a minimum combustion airflow threshold.

19. A gas burner assembly for a cooktop appliance, the gas burner assembly comprising:
a primary burner comprising a plurality of primary flame ports in fluid communication with a primary fuel chamber for receiving a flow of primary fuel;
a boost burner comprising a plurality of boost burner ports in fluid communication with a boost fuel chamber for receiving a flow of boost fuel;
a boost valve for regulating the flow of boost fuel to the boost fuel chamber;
a forced air supply source for selectively urging a flow of air into the boost fuel chamber, wherein the boost valve is a pressure controlled valve operably coupled with the forced air supply source, the pressure controlled valve configured for stopping the flow of boost fuel when a pressure of the flow of air drops below a predetermined threshold; and
a controller operably coupled to the boost valve and the forced air supply source, the controller being configured for:
receiving a command to activate the boost burner;
activating the boost burner upon receiving the command to activate the boost burner; and
extinguishing the boost burner when a predetermined amount of time has passed since activating the boost burner.

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Cadima Paul Bryan

Classifications

• F24C3/122 Primary

  on stoves · CPC title

• F23D14/22

  with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other · CPC title

• F23C5/08

  Disposition of burners · CPC title

• F23D2900/14062

  for cooking ranges having multiple flame rings · CPC title

• F23D14/06

  with radial outlets at the burner head · CPC title