US 12,736,218 B2Granted

Compact low emissions burner nozzle using additive manufacturing

AssigneeHoneywell International Inc.

InventorsCurtis L. Taylor, Andrew Collier, Wyatt Robert Francis Culler, Heinz-Peter Gitzinger, Ceji Li, Abderahman Rabhiou

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Abstract

A burner nozzle and a method of operating the burner nozzle can include a main air/fuel port located centrally within the burner nozzle, and a group of staged gas fuel ports that surrounds the main air-fuel port and which can direct fuel to an established flame zone downstream from the burner nozzle. Furthermore, a trapped vortex chamber can be formed in a wall of the main air/fuel port and can communicate with a group of primary gas ports in a fuel circuit, such that the trapped vortex chamber facilitates flame stability with respect to a flame produced by the burner nozzle.

Claims9

Dependent claims

A burner nozzle, comprising:

a main body including at least a chamber base integrally coupled to a nozzle portion;
a main air/fuel port located centrally within the nozzle portion
an air inlet located centrally within the chamber base and in fluid communication with the main air/fuel port for receiving a flow of air;
a primary fuel manifold formed in the chamber base for receiving a first portion of a total nozzle fuel flow, the primary fuel manifold in fluid communication with a plurality of main fuel outlet ports;
a staged fuel manifold formed in the chamber base for receiving a second portion of the total nozzle fuel flow, the staged fuel manifold in fluid communication with a plurality of staged fuel outlet ports that surround the main air/fuel port and which directs fuel to an established flame zone downstream from the burner nozzle;
and
a trapped vortex chamber formed in a wall of the main body and configured to facilitate flame stability with respect to a flame produced by the burner nozzle,
wherein:
a first number of the main fuel outlet ports are located to discharge a first percentage of the first portion of the total nozzle fuel flow into the air inlet upstream of the trapped vortex chamber, and
a second number of the main fuel outlet ports are located to discharge a second percentage the first portion of the total nozzle fuel flow into the trapped vortex generator.

7 more elements

A multi-port burner nozzle assembly, comprising:

a multi-nozzle plate having a plurality of burner nozzle openings formed therein;
and
a plurality of burner nozzles, each burner nozzle disposed within a different one of the burner nozzle openings, each burner nozzle comprising:
a main body including at least a chamber base integrally coupled to a nozzle portion;
a main air/fuel port located centrally within the nozzle portion
an air inlet located centrally within the chamber base and in fluid communication with the main air/fuel port for receiving a flow of air;
a primary fuel manifold formed in the chamber base for receiving a first portion of a total nozzle fuel flow, the primary fuel manifold in fluid communication with a plurality of main fuel outlet ports;
a staged fuel manifold formed in the chamber base for receiving a second portion of the total nozzle fuel flow, the staged fuel manifold in fluid communication with a plurality of staged fuel outlet ports that surround the main air/fuel port and which directs fuel to an established flame zone downstream from the burner nozzle;
and
a trapped vortex chamber formed in a wall of the main body and configured to facilitate flame stability with respect to a flame produced by the burner nozzle,
wherein:
a first number of the main fuel outlet ports are located to discharge a first percentage of the first portion of the total nozzle fuel flow into the air inlet upstream of the trapped vortex chamber, and
a second number of the main fuel outlet ports are located to discharge a second percentage the first portion of the total nozzle fuel flow into the trapped vortex generator.

10 more elements

Dependencies are inferred from the claim text.