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Title: Annular fuel and air co-flow premixer

Patent ·
OSTI ID:1176505
; ;

Disclosed is a premixer for a combustor including an annular outer shell and an annular inner shell. The inner shell defines an inner flow channel inside of the inner shell and is located to define an outer flow channel between the outer shell and the inner shell. A fuel discharge annulus is located between the outer flow channel and the inner flow channel and is configured to inject a fuel flow into a mixing area in a direction substantially parallel to an outer airflow through the outer flow channel and an inner flow through the inner flow channel. Further disclosed are a combustor including a plurality of premixers and a method of premixing air and fuel in a combustor.

Research Organization:
General Electric Co., Schenectady, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42643
Assignee:
General Electric Company (Schenectady, NY)
Patent Number(s):
8,555,646
Application Number:
12/360,449
OSTI ID:
1176505
Resource Relation:
Patent File Date: 2009 Jan 27
Country of Publication:
United States
Language:
English

References (10)

Gas only nozzle patent October 2002
Fully premixed secondary fuel nozzle with improved stability patent February 2004
Burner tube and method for mixing air and gas in a gas turbine engine patent February 2006
Air-atomizing fuel nozzle patent September 1976
Premixing burner with impingement cooled centerbody and method of cooling centerbody patent March 2006
Mixer having intervane fuel injection patent October 2001
Burner for a plurality of fluid streams patent August 1981
Dual fuel mixer for gas turbine combustor patent October 1994
Dual fuel mixer for gas turbine combustor patent July 1998
Multishear fuel injector patent December 2000

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