公开(公告)号：US20140157781A1

公开(公告)日：2014-06-12

申请号：US14090755

申请日：2013-11-26

Applicant: Rolls-Royce PLC

Inventor： Anthony John MORAN ,  Christopher Luke FORD ,  Jonathan Frederick CARROTTE ,  Alastair Duncan WALKER

IPC: F23R3/02

CPC classification number: F23D11/383 ,  F05D2250/14 ,  F05D2250/141 ,  F23D2900/11101 ,  F23D2900/11403 ,  F23R3/02 ,  F23R3/14 ,  F23R3/16 ,  F23R3/286 ,  F23R3/343

Abstract: A gas turbine engine lean burn fuel injector includes a fuel injector head which has a first air swirler, a second air swirler arranged around the first air swirler, a pilot fuel injector arranged radially between the first air swirler and the second air swirler. A third air swirler arranged around the second air swirler, a fourth air swirler arranged around the third air swirler and a main fuel injector arranged radially between the third air swirler and the fourth air swirler. A shroud is arranged around the fourth air swirler. A downstream end of the shroud is generally circular in cross-section in a plane perpendicular to the axis (Y) of the fuel injector head and an upstream end of the shroud is generally elliptical in cross-section in a plane perpendicular to the axis (Y) of the fuel injector head.

Abstract translation: 燃气涡轮发动机贫燃燃料喷射器包括燃料喷射器头，其具有第一空气旋流器，布置在第一空气旋流器周围的第二空气旋流器，在第一空气旋流器和第二空气旋流器之间径向布置的引燃燃料喷射器。 围绕第二空气旋流器布置的第三空气旋流器，围绕第三空气旋流器布置的第四空气旋流器和在第三空气旋流器和第四空气旋流器之间径向布置的主燃料喷射器。 围绕第四个空气旋流器布置一个护罩。 护罩的下游端在垂直于燃料喷射器头部的轴线（Y）的平面中具有大致圆形的横截面，并且护罩的上游端在垂直于轴线的平面中的横截面为大致椭圆形（ Y）。

公开(公告)号：US20150089920A1

公开(公告)日：2015-04-02

申请号：US14490789

申请日：2014-09-19

Applicant: ROLLS-ROYCE PLC

Inventor： Christopher FORD ,  Ashley Gavin BARKER ,  Alastair Duncan WALKER ,  Jonathan CARROTTE

IPC: F23R3/30

CPC classification number: F23R3/30 ,  F23R3/14

Abstract: An airblast fuel injector is provided for a fuel spray nozzle of a gas turbine engine. The injector has an annular air passage for the passage of a swirling air flow therethrough. The swirling air flow is used by the injector to produce an atomised fuel spray. The air passage contains a swirler for producing the swirling air flow, the swirler comprising a circumferential row of vanes which span inner and outer side walls of the air passage. Viewed on a longitudinal section through the injector, the air passage has a bend downstream of the swirler, the bend changing the direction of the air passage. The vanes are configured to introduce a radial component to the air flow exiting the swirler, the radial component guiding the air flow around the bend.

Abstract translation: 为燃气涡轮发动机的燃料喷嘴提供喷气燃料喷射器。 喷射器具有环形空气通道，用于使旋流气流通过其中。 喷射器使用旋转空气流产生雾化燃料喷雾。 空气通道包括用于产生旋流空气流的旋流器，所述旋流器包括跨过空气通道的内侧壁和外侧壁的圆周排的叶片。 在通过喷射器的纵向截面上观察，空气通道在旋流器下游具有弯曲部，弯曲部改变了空气通道的方向。 叶片构造成将径向分量引入离开旋流器的空气流中，径向分量引导围绕弯曲部的气流。