Swirl stabilized high capacity duct burner
AssigneeJohn Zink Company
InventorStephen Londerville
Life of this patent
Estimating the term…
Abstract
The present disclosure includes air spinners for use in duct burners, and duct burners and duct burner kits including a plurality of air spinners. Air spinners may include a plurality of blades extending radially outward from a fuel path and configured to impart rotation to air flowing between the blades, where the air spinner is configured to be coupled to a fuel runner of a duct burner such that the air spinner encircles a fuel outlet of the fuel runner with the axis of the fuel path extending at a non-parallel angle from an axis of the fuel runner. Duct burners can comprise a plurality of air spinners coupled to a plurality of fuel runners. Duct burner kits can comprise a plurality of air spinners configured to be coupled (e.g., without welding) to a plurality of fuel runners.
Claims14
A burner for use in a duct burner system having a duct, the burner comprising:
- a frame defining an opening extending between an inlet first end and an outlet second end, the frame configured to be coupled to the duct such that air flowing through the duct will flow through the opening in a downstream direction from the first end to the second end;
- a plurality of fuel runners coupled to the frame and extending across the opening of the frame, each of the plurality of fuel runners including a sidewall defining a fuel channel and a plurality of fuel outlets along a length of the fuel runner, each of the plurality of fuel outlets in communication with the fuel channel and extending through the sidewall;
- a plurality of air spinners each comprising a plurality of blades extending radially outward from a fuel path having an axis, the plurality of blades configured to impart rotation to air flowing between the blades;
- a plurality of baffles coupled to the frame and extending across the opening of the frame parallel to the plurality of fuel runners, at least some of the plurality of baffles each disposed between two of the fuel runners;
- where each of the plurality of air spinners is coupled to one of the plurality of fuel runners such that the air spinner encircles one of the plurality of fuel outlets with the axis of the fuel path extending at a non-parallel angle from an axis of the fuel runner, and
- where the baffles are located between the first end of the frame and of the blades of the air spinners, and between the fuel runners and the second end of the frame.
A burner kit for use in a high capacity burner duct system having a duct, the burner kit comprising:
- a plurality of fuel runners configured to be coupled to a frame and configured to extend across an opening of the frame, each of the plurality of fuel runners including a sidewall defining a fuel channel and a plurality of fuel outlets along a length of the fuel runner, each of the plurality of fuel outlets in communication with the fuel channel and extending through the sidewall;
- and
- a plurality of air spinners each comprising a plurality of blades extending radially outward from a fuel path having an axis, the plurality of blades configured to impart rotation to air flowing between the blades;
- wherein the frame defines an opening extending between an inlet first end and an outlet second end, and the frame comprises a plurality of baffles extending across the opening of the frame parallel to the plurality of fuel runners, at least some of the plurality of baffles each disposed between two of the fuel runners, and further wherein the baffles are located between the first end of the frame and of the blades of the air spinners, and between the fuel runners and the second end of the frame;
- and
- where each of the plurality of air spinners is coupled to one of the plurality of fuel runners such that the air spinner encircles one of the plurality of fuel outlets with the axis of the fuel path extending at a non-parallel angle from an axis of the fuel runner.
Dependencies are inferred from the claim text.