Patent ID: 6698207
Filing Date: 2004-03-02
Classification: F23D,F23R

Abstract:
A flame-holding fuel nozzle for a combustion engine, said nozzle comprising:an elongated first sleeve characterized by an upstream end and an opposite downstream end; a second sleeve disposed radially inward of said first sleeve, said first and second sleeves defining a fuel passageway therebetween, said fuel passageway including an inlet and an exit, said inlet being adapted for fluid communication with a source of fuel; a third sleeve disposed radially inward of said second sleeve, said second and third sleeves defining a cooling fluid passageway therebetween, said cooling fluid passageway having an inlet and an exit; and a cooling fluid conduit adapted to fluidly connect said cooling fluid passageway with a source of cooling fluid, said conduit having a conduit entrance located upstream of said fuel passageway exit and a conduit exit in fluid communication with said cooling fluid passageway inlet, whereby said cooling fluid conduit, said cooling fluid passageway, and said fuel passageway cooperatively ensure that cooling fluid passing through said cooling fluid passageway exit is substantially fuel-free during operation.