Combustion resonance suppression

Patent metadata

Field	Value
Publication number	US-10072843-B2
Application number	US-201514919085-A
Country	US
Kind code	B2
Filing date	Oct 21, 2015
Priority date	Oct 21, 2015
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Methods, devices, and systems for combustion resonance suppression are described herein. One device includes a memory, and a processor configured to execute executable instructions stored in the memory to receive a number of operating conditions of a burner, determine whether resonance characteristics are present in a combustion chamber housing the burner based on the number of operating conditions of the burner, and modify at least one of an air supply and a fuel supply to the burner upon determining resonance characteristics are present in the combustion chamber.

First claim

What is claimed:

1. A controller for combustion resonance suppression, comprising:
a memory;
a processor configured to execute executable instructions stored in the memory to:
receive a number of operating conditions of a burner;
determine whether resonance characteristics are present in a combustion chamber housing the burner based on the number of operating conditions of the burner;
save, to a resonance map, the number of operating conditions of the burner upon determining that resonance characteristics are present;
modify at least one of an air supply and a fuel supply to the burner upon determining resonance characteristics are present in the combustion chamber; and
avoid, a number of saved operating conditions of the resonance map, when modifying at least one of the air supply and the fuel supply.

2. The controller of claim 1 , wherein the number of operating conditions of the burner include:
a pressure within the combustion chamber; and
a light emission of a flame within the combustion chamber.

3. The controller of claim 2 , wherein the pressure within the combustion chamber is received from a pressure transducer in the combustion chamber.

4. The controller of claim 2 , wherein the light emission of the flame is received from an ultra-violet (UV) sensor in the combustion chamber.

5. The controller of claim 1 , wherein the resonance characteristics indicate a resonance state of the burner.

6. The controller of claim 5 , wherein the resonance state comprises a narrow-band high intensity noise in the combustion chamber.

7. A computer implemented method for combustion resonance suppression, comprising:
receiving, by a controller, a number of operating conditions of a burner, including:
a pressure from a pressure transducer within a combustion chamber housing the burner; and
a light emission of a flame within the combustion chamber housing the burner from an ultra-violet (UV) sensor in the combustion chamber housing the burner;

determining, by the controller, whether resonance characteristics are present in the combustion chamber based on the pressure and the light emission of the flame;
saving, to a resonance map, the number of operating conditions of the burner upon determining that resonance characteristics are present;
modifying, by the controller, at least one of an air supply and a fuel supply to the burner upon determining the resonance characteristics are present in the combustion chamber to remove the burner from a resonance state; and
avoiding, a number of saved operating conditions of the resonance map, when modifying at least one of the air supply and the fuel supply.

8. The method of claim 7 , wherein determining whether resonance characteristics are present in the combustion chamber includes:
applying a Fourier transform to the pressure; and
applying a Fourier transform to the light emission of the flame.

9. The method of claim 7 , wherein the resonance state includes a largest peak magnitude of the pressure and a largest peak magnitude of the light emission of the flame occurring at a same frequency.

10. The method of claim 7 , wherein modifying the air supply to the burner includes modifying a volumetric air flow rate of the air supply.

11. The method of claim 7 , wherein modifying the fuel supply to the burner includes modifying a volumetric fuel flow rate of the fuel supply.

12. The method of claim 7 , wherein modifying the air supply to the burner includes modifying an actuator controlling an air supply control valve and wherein modifying the fuel supply to the burner includes modifying an actuator controlling a fuel supply valve.

13. The method of claim 7 , wherein the at least one of the air supply and the fuel supply are modified within a safe operating range of the burner.

14. The method of claim 7 , wherein the method is continuously repeated throughout operation of the burner.

15. A system for combustion resonance suppression, comprising:
a burner;
a combustion chamber housing the burner; and
a controller, configured to:
receive, from a number of sensors, a number of operating conditions of a burner, including:
a pressure from a pressure transducer within the combustion chamber; and
a light emission of a flame within the combustion chamber from an ultra-violet (UV) sensor in the combustion chamber;

determine whether resonance characteristics are present in the combustion chamber based on the pressure and the light emission of the flame;
save, to a resonance map, the number of operating conditions of the burner including the pressure and the light emission of the flame upon determining that resonance characteristics are present;
modify at least one of an air supply and a fuel supply to the burner upon determining the resonance characteristics are present in the combustion chamber; and
avoid, a number of saved operating conditions of the resonance map including the pressure and the light emission of the flame, when modifying at least one of the air supply and the fuel supply.

16. The system of claim 15 , wherein at least one of the air supply and the fuel supply are modified by a lowest amount needed to remove the burner from a resonance state.

17. The system of claim 16 , wherein the lowest modification amount needed to remove the burner from the resonance state is determined by determining, by the controller, a modification to at least one of the air supply and the fuel supply to result in elimination of persistent oscillations of the resonance state.

18. The system of claim 15 , wherein the controller does not modify at least one of the air supply and the fuel supply upon determining that no resonance characteristics are present in the combustion chamber.

Assignees

• Honeywell Int Inc

Inventors

• Baramov Lubomir
• Taylor Curtis L

Classifications

• F23N2225/04

  pressure · CPC title

• F23N2223/08

  Microprocessor; Microcomputer · CPC title

• F23N2223/04

  Memory · CPC title

• F23N5/184 Primary

  using electronic means · CPC title

• F23N5/16

  using noise-sensitive detectors · CPC title