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Publication Title | Ulllted States Patent [19] Willisetal. LOW EMISSIONS COMBUSTION SYSTEM FORAGASTURBINEENGINE

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Ulllted States Patent [19] Willisetal.

[54] LOW EMISSIONS COMBUSTION SYSTEM FORAGASTURBINEENGINE

[75] Inventors:JeffreyW_Willis;GuillermoPant, both of Los Angeles; Bruce L. Alder,

J12,Agoura, alofCalif.

[73] Assignee: CapstoneTurbineCorporation, TarZana, Calif.

[21] Appl' N05 855,210

[22] Filed, May 13’1997

[51] Int. Cl.6 .. F02G 3/00; F02C 3/08

[52] US.Cl...60/39.36;60/760;60/756

[58] Field Of Search ..60/737, 738, 755,

US005850732A

[1] PatentNumber: 5,850,732

[45] DateofPatent: Dec.22,1998

5,235,813 8/1993 McVeyeta1...60/737 5,622,054 4/1997Tingle 60/737 5,685,156 11/1997 Willis .................... 60/760

5,735,126 4/1998Schulte-Werning..60/755

PrimaryExaminer—Timothy S.Thorpe AssistantExaminer—Ted Kim Attorney)Agent)orFirm_A1bertJ'Miller

[57] ABSTRACT

A loW emissions combustion system for a gas turbine

engine, including a generally annular combustor With a plurality of tangential fuel injectors (14) to introduce a fuel/air mixture. The annular combustor includes a skirt shaped?oWcontrolbaffle(48)fromtheinnerlinerandair dilutionholes(SW54) intheinnerlinerunderneaththe?ow control baf?e and also in the cylindrical outer liner. The fuel injectors (14) extend through the recuperator housing and intothecombustorthroughanangledtubeandthenthrough a tangential guide in the cylindrical outer liner of the combustor housing. The fuel injectors generally comprise an

elongated injector tube With the Outer end including 4 coupler having at least one fuel inlet tube. Compressed combustion air is provided to the interior of the elongated injector tube from either holes or slits therein Which receive compressed air from the angled tube around the fuel injector Which is open to the space betWeen the recuperator housing and the combustor.

60 Claims, 12 Drawing Sheets

4 ['39

[56]

60/756, 760, 3936, 39511 References Cited

Us‘ PATENT DOCUMENTS

3,866,413

4,179,881 12/1979 Faucheretal,, 4,586,328 5/1986 Howald. 4,698,963 10/1987 Taylor-

4,982,570 4,996,838 5,025,622 5,099,644 5,127,221 5,207,064

1/1991 Waslocta1~-

3/1991 Melconian.

6/1991 Melconian.

3/1992 Sablaet8.1.

7/1992 Beebe .

5/1993 Ciokajloeta1...60/737

43

2/1975 Sturgess ..60/742

Image | Ulllted States Patent [19] Willisetal. LOW EMISSIONS COMBUSTION SYSTEM FORAGASTURBINEENGINE



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