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Tangential entry fuel nozzle

  • US 5,461,865 A
  • Filed: 02/24/1994
  • Issued: 10/31/1995
  • Est. Priority Date: 02/24/1994
  • Status: Expired due to Term
First Claim
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1. A low NOx burner for a gas turbine engine, comprising:

  • a substantially cylindrical burner chamber having an axis, having an axially extending chamber wall, and having an upstream end and an outlet end;

    said outlet end having a diameter "D";

    at least one longitudinally extending slot in the wall of said cylindrical chamber, said slot having an axial length and a slot wall tangential to said chamber wall;

    supply means for supplying air through said slot;

    a gas distribution manifold located adjacent said slot and having a plurality of axially spaced openings for delivering gas into the airflow as it passes into said slot;

    a conical body located in said chamber on the axis of said chamber with the base of said conical body at the upstream end of said chamber and the apex of said conical body toward the outlet end of said chamber;

    an injection zone defined as an annular volume concentric with said conical body bounded by imaginary surfaces at 30% and 80% of the distance from said conical body surface to the diameter "D", and by planes axially located from the axial center of said inlet slot a distance 10% toward said base and 20% toward said outlet end of said inlet slot axial length; and

    liquid fuel injection means for atomizing fuel within said injection zone.

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