The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2004
Filed:
Sep. 17, 2002
Robert Bland, Oviedo, FL (US);
Anil Gulati, Winter Springs, FL (US);
John Battaglioli, Glenville, NY (US);
Siemens Westinghouse Power Corporation, Orlando, FL (US);
Abstract
A pre-mixing burner ( ) for a gas turbine engine having improved resistance to flashback. Fuel ( ) is supplied to a pre-mixing chamber ( ) of the burner from a plurality of fuel outlet openings ( ) formed in fuel pegs ( ) extending into the flow of air ( ) passing through the chamber. The fuel outlet openings are formed to direct the fuel in a downstream direction at an angle (A) relative to the direction of the flow of air past the respective fuel peg. This angle imparts a downstream velocity vector (V ) for increasing the net velocity of the air and a normal velocity vector (V ) for directing the fuel away from the wake ( ) formed downstream of the fuel peg. Alternate ones of the fuel outlet openings along a single fuel peg may be formed at respective positive (A) and negative (B) angles with respect to a plane ( ) extending along the wake in order to minimize the size of the wake. The propensity of the burner to support upstream flame propagation and flashback is thus reduced by increasing the net air velocity, by minimizing the amount of fuel entrained in the wake, and by minimizing the size of the wake.