US 10,947,902 B2Granted

Fuel nozzle, fuel supply assembly thereof, and method of assembling a fuel nozzle

AssigneeHaier US Appliance Solutions, Inc.

InventorsThomas Edward Johnson, Kaitlin Marie Graham, Geoffrey David Myers

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Abstract

An inlet manifold includes a main inlet oriented along a first direction and a pilot inlet oriented along a second direction perpendicular to the first direction. A wye passage includes an inlet branch in fluid communication with the main inlet. The inlet manifold also includes a first main passage in fluid communication with a first outlet branch of the wye passage and a second main passage in fluid communication with a second outlet branch of the wye passage. The first main passage extends generally along the first direction between the wye passage and a first main outlet. The second main passage extends generally along the first direction between the wye passage and a second main outlet. The inlet manifold also includes a pilot passage in fluid communication with the pilot inlet. The pilot passage extends generally along the first direction between the pilot inlet and a pilot outlet.

Claims9

Dependent claims

A fuel supply assembly for a fuel nozzle, the fuel supply assembly comprising:

an inlet manifold defining a longitudinal direction, a transverse direction, and a vertical direction, the longitudinal direction, the transverse direction, and the vertical direction are mutually perpendicular, the inlet manifold comprising:
a main inlet positioned at an upstream end of the inlet manifold and oriented along the longitudinal direction;
an aft flange at a downstream end of the inlet manifold, the aft flange defining a diameter, the downstream end of the inlet manifold opposite the upstream end of the inlet manifold along the longitudinal direction;
a pilot inlet oriented along the vertical direction;
a wye passage comprising an inlet branch, the inlet branch in fluid communication with the main inlet of the inlet manifold;
a first main passage in fluid communication with a first outlet branch of the wye passage, the first main passage extending generally along the longitudinal direction between the wye passage and a first main outlet;
a second main passage in fluid communication with a second outlet branch of the wye passage, the second main passage extending generally along the longitudinal direction between the wye passage and a second main outlet;
and
a pilot passage in fluid communication with the pilot inlet, the pilot passage extending generally along the longitudinal direction between the pilot inlet and a pilot outlet;
wherein the first main outlet, the second main outlet, and the pilot outlet are formed in a downstream face of the aft flange and are aligned along the diameter of the aft flange;
a first main conduit coupled to the first main outlet of the inlet manifold, the first main conduit extending between the inlet manifold and a fuel manifold;
a second main conduit coupled to the second main outlet of the inlet manifold, the second main conduit extending between the inlet manifold and the fuel manifold, the fuel manifold in fluid communication with an air plenum for mixing fuel from the first main conduit and the second main conduit with air in the air plenum;
and
a pilot conduit coupled to the pilot outlet of the inlet manifold, the pilot conduit extending between the pilot outlet and a pilot tip, the pilot tip positioned downstream of the fuel manifold.

11 more elements

An inlet manifold defining a first direction, a second direction, and a third direction, the first direction, the second direction, and the third direction are mutually perpendicular, the inlet manifold comprising:

a main inlet positioned at an upstream end of the inlet manifold and oriented along the first direction;
an aft flange at a downstream end of the inlet manifold, the downstream end of the inlet manifold opposite the upstream end of the inlet manifold along the first direction;
a pilot inlet oriented along the third direction;
a wye passage in fluid communication with the main inlet of the inlet manifold;
a first main passage in fluid communication with the wye passage, the first main passage extending between the wye passage and a first main outlet;
a second main passage in fluid communication with the wye passage, the second main passage extending between the wye passage and a second main outlet;
a pilot passage in fluid communication with the pilot inlet, the pilot passage extending between the pilot inlet and a pilot outlet;
a central body comprising a hub portion upstream of the aft flange and an externally threaded portion upstream of the hub portion, wherein the main inlet, the pilot inlet, the first main outlet, the second main outlet, the pilot outlet, and the aft flange are formed in the central body;
a removable flange configured for mounting on the hub portion of the central body;
and
an internally threaded fastener configured to engage the externally threaded portion to secure the removable flange to the central body;
wherein the first main outlet, the second main outlet, and the pilot outlet are formed in a downstream face of the aft flange.

9 more elements

A method of assembling a fuel nozzle comprising;

attaching a first end of a first main conduit to a fuel manifold;
attaching a second end of the first main conduit to a first main outlet of a central body of an inlet manifold, the inlet manifold defining a first direction, a second direction, and a third direction, the first direction, the second direction, and the third direction are mutually perpendicular, the first main outlet formed in a downstream face of an aft flange at a downstream end of the inlet manifold;
attaching a first end of a second main conduit to the fuel manifold;
attaching a second end of the second main conduit to a second main outlet of the central body of the inlet manifold, the second main outlet formed in the downstream face of the aft flange;
attaching a first end of a pilot conduit to a pilot tip, the pilot tip downstream of the fuel manifold;
attaching a second end of the pilot conduit to a pilot outlet of the central body of the inlet manifold, the pilot outlet formed in the downstream face of the aft flange;
inserting the central body into a downstream end of a fuel nozzle;
passing the central body upstream through the fuel nozzle and through an endcover until the pilot tip is proximate to the downstream end of the fuel nozzle;
placing a removable flange onto a hub portion of the central body;
securing the removable flange on the hub portion of the central body with an internally threaded fastener by threading the internally threaded fastener onto an externally threaded portion of the central body upstream of the hub portion;
securing the removable flange to the endcover;
fastening a main inlet fitting into a main inlet port positioned at an upstream end of the central body of the inlet manifold and oriented along the first direction;
and
fastening a pilot inlet fitting into a pilot inlet port of the central body, the pilot inlet port oriented along the third direction;
wherein the downstream end of the inlet manifold is opposite the upstream end of the inlet manifold along the first direction, and wherein the inlet manifold further comprises a wye passage in fluid communication with the main inlet of the inlet manifold, a first main passage in fluid communication with the wye passage, the first main passage extending between the wye passage and the first main outlet, a second main passage in fluid communication with the wye passage, the second main passage extending between the wye passage and the second main outlet, and a pilot passage in fluid communication with the pilot inlet, the pilot passage extending between the pilot inlet and the pilot outlet.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/621,347Filed 13 Jun 2017
Published: US 2018/0355800 A113 Dec 2018
Granted: 16 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F02B 19/18
Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10: transfer passages between chamber and cylinder
F02C 7/222
Fuel supply systems: fuel flow conduits, e.g. manifolds
F23D 11/36
Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space: details
F23R 3/286
Characterised by the fuel supply: having fuel-air premixing devices