Patent ID: 7299620

Claim:
An ignition system for a gas turbine combustor, said ignition system comprising: an outer housing comprising: a first end; a second end; a first inner wall; a second inner wall proximate said second end; at least one air supply hole extending through said first inner wall; a plurality of air swirl holes proximate said second end; at least one raised surface along said second inner wall proximate said second end; at least one fuel passage extending towards said second end for injecting a fuel; a mixing chamber proximate said second end; an electrode having an electrode body and electrode tip, said electrode extending through a portion of said outer housing towards said second end; a generally annular passage located between said electrode body and said outer housing and in fluid communication with said at least one air supply hole; and, a plurality of channels defined by said electrode tip, said second inner wall of said outer housing, and said at least one raised surface, said plurality of channels being in fluid communication with said generally annular passage; wherein said fuel mixes with air from said channels and said air swirl holes in said mixing chamber to form a combustible mixture that is ignited by said electrode.