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US 8,806,871 B2Granted
Fuel nozzle
AssigneeGeneral Electric Company
InventorsMarie Ann McMasters, Michael A. Benjamin, Alfred Mancini, Steven Joseph Lohmueller
Life of this patent
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Abstract
A fuel nozzle for a gas turbine engine is disclosed, the fuel nozzle comprising at least one unitary component made using a rapid manufacturing process. In one aspect, the rapid manufacturing process is a laser sintering process. Unitary components disclosed include a conduit, swirler, distributor, venturi and a centerbody.
Claims9
A fuel nozzle apparatus comprising:
- a fuel distributor comprising:
- a fuel conduit;
- an annular distributor ring including:
- an array of fuel outlets, a main fuel passage communicating with the fuel conduit and the fuel outlets, and an aft interior mounting surface;
- and
- a pilot supply tube extending axially from an inner end of the fuel conduit, and including a pilot fuel passage;
- a venturi, comprising:
- an annular splitter including a cylindrical forward portion with a first bore;
- an annular venturi wall surrounding the splitter, the venturi including a cylindrical forward portion defining spaced-apart forward and aft exterior mounting surfaces, the forward exterior mounting surface is located at a forward-most edge of the cylindrical forward portion and
- a row of first vanes extending between the splitter and the venturi wall, wherein the row of first vanes is axially located at the forward-most edge of the annular venturi wall and the cylindrical forward portion of the annular splitter, and connects the annular splitter to the annular venturi;
- wherein the venturi is of a unitary construction;
- a swirler comprising:
- a hub with upstream and downstream ends, a second bore at the upstream end, and a pilot fuel outlet at the downstream end;
- a row of second vanes extending outward from the hub;
- an annular rim surrounding the upstream end of the hub, defining an air flow passage between the rim and the hub, and a forward interior mounting surface located on a radially inner side of the annular rim;
- and
- a radially-extending wall interconnecting the hub and the rim;
- wherein the swirler is of a unitary construction;
- wherein:
- the pilot supply tube is received in the second bore;
- outer ends of the inner vanes are received in the first bore of the splitter;
- and
- the forward and aft exterior mounting surfaces of the venturi are received in the forward and aft interior mounting surfaces, respectively.
20 more elements
Dependencies are inferred from the claim text.