US 9,810,427 B2 · Fuel nozzle with hemispherical dome air inlet

Abstract

The present invention discloses a novel apparatus and way for directing a supply of compressed air into a fuel nozzle assembly for mixing with a fuel source. The apparatus comprises a fuel nozzle assembly having a plurality of coaxial tubes and radially-extending swirler vanes for directing a supply of fuel to a mixing tube. Compressed air is directed to flow in a primarily axial direction by passing through a hemispherically-shaped dome portion at an air inlet region of the fuel nozzle assembly. The hemispherically-shaped dome includes a plurality of openings for directing air into the fuel nozzle assembly in a direction having a radial and axial component.

Claims5

Dependent claims

An air conditioning screen for use in a fuel nozzle assembly comprising:

a substantially hemispherically-shaped dome comprising:
an inner wall;
an outer wall;
and,
a plurality of openings extending from the outer wall to the inner wall and angled in a downstream direction having both an axial and radial component;
wherein the substantially hemispherically-shaped dome encompasses an air inlet region of a fuel nozzle assembly, wherein at least one of the plurality of air openings has a length and a diameter, with the length greater than the diameter, and wherein the substantially hemispherically-shaped dome extends between a base of the fuel nozzle assembly and proximate a premix tube of the fuel nozzle assembly.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/669,083Filed 26 Mar 2015

Published

US 2016/0281979 A129 Sep 2016

Granted

7 Nov 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

F23D 14/02
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid: premix gas burners, i.e. in which gaseous fuel is mixed with…
F23D 14/34
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid: burners specially adapted for use with means for pressurising…
F23D 14/58
Nozzles: characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
F23R 3/14
Inducing a vortex: by using swirl vanes

Fuel nozzle with hemispherical dome air inlet

Life of this patent

Fuel nozzle with hemispherical dome air inlet

Life of this patent

Abstract

Claims5