Method and apparatus for staged combustion of air and fuel
AssigneeGeneral Electric Company
InventorsLarry William Swanson, Roy Payne
Life of this patent
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Abstract
A method for operating a fuel-fired furnace including at least one burner is provided. The method includes channeling a first fluid flow to the at least one burner at a first predetermined velocity, and channeling a second fluid flow to the at least one burner at a second predetermined velocity during a first mode of operation of the at least one burner. The second predetermined velocity is different than the first predetermined velocity.
Claims21
A method for operating a fuel-fired furnace including at least one burner, said method comprising:
- channeling a first air flow to the at least one burner at a first predetermined velocity;
- and
- channeling a second air flow to the at least one burner at a second predetermined velocity during a first mode of operation of the at least one burner, wherein the second predetermined velocity is different than the first predetermined velocity, and wherein during the first mode of operation, fuel is substantially prevented from being channeled through the at least one burner.
(canceled)
A burner for use with a fuel-fired furnace, said burner comprising:
- a first duct configured to channel a fuel flow into the furnace;
- and
- a second duct substantially concentrically-aligned with and extending through said first duct, said second duct configured to channel a first air flow into the furnace;
- at a first predetermined velocity when the fuel flow is substantially prevented for flowing into the furnace through said first duct.
A fuel-fired furnace coupled to a fuel source and an air source, said furnace comprising:
- a combustion zone defined within said furnace;
- a first flow regulation device coupled to the fuel source and selectively operable based on an operation of said furnace;
- a second flow regulation device coupled to the air source and selectively operable based on an operation of said furnace;
- and
- a plurality of burners coupled within said combustion zone, at least one of said plurality of burners comprising:
- a first duct coupled to the fuel source via said first flow regulation device, said first duct configured to channel a fuel flow into said furnace;
- and
- a second duct extending through said first duct, said second duct coupled to the air source via said second flow regulation device and configured to channel a first air flow into said furnace at a first predetermined velocity when the fuel flow is substantially prevented from being channeled through said first duct by said first flow regulation device.
Dependencies are inferred from the claim text.