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    FUEL INJECTOR
    1.
    发明申请
    FUEL INJECTOR 审中-公开

    公开(公告)号：US20180195726A1

    公开(公告)日：2018-07-12

    申请号：US15862724

    申请日：2018-01-05

    Applicant: ROLLS-ROYCE plc

    Inventor： Frederic WITHAM ,  Steven BALLANTYNE ,  Jonathan M. GREGORY ,  Mike OJ CARUSO ,  Stephen C. HARDING

    IPC: F23R3/28 ,  F23R3/38 ,  F23R3/34 ,  F23R3/20 ,  F23R3/14 ,  F02C7/22 ,  F23D11/38 ,  F23D11/10 ,  F02C9/28

    Abstract: A fuel injector comprises an elongate fuel passage (31) having an elongate axis (31a) extending from an upstream inlet end to a downstream outlet end. A plurality of outlets (33) is arranged at the outlet end, each outlet extends obliquely with respect to the elongate axis (31a). The elongate fuel passage is defined by an inner skin of a double skinned pipe, the double skinned pipe defines a first annular cavity (34) between the inner skin and an outer skin. The inner skin and the outer skin meet adjacently upstream of the one or more outlets to close an end of the first annular cavity (34). The injector has a nose section (32) at a downstream end, the nose section (32) being convergent and fluted. The flutes (38) are arranged between the outlets (33) and extend towards the downstream end of the nose section (32) whereby to guide an air stream (A) passing over the injector (30) to form single jet at the downstream end of the nose section (32).

    COOLING APPARATUS FOR A FUEL INJECTOR
    2.
    发明申请
    COOLING APPARATUS FOR A FUEL INJECTOR 审中-公开
    燃油喷射器的冷却装置

    公开(公告)号：US20170067641A1

    公开(公告)日：2017-03-09

    申请号：US15245035

    申请日：2016-08-23

    Applicant: ROLLS-ROYCE plc

    Inventor： Frederic WITHAM ,  Pierre HILT ,  Steven P. JONES ,  Jonathan M. GREGORY ,  Timothy MINCHIN

    IPC: F23R3/58 ,  F02C3/04

    Abstract: An annular air swirler configured to receive a fuel injector in a central bore. The swirler has one or more annular channels, defined by radially facing channel walls and having an inlet for receiving compressed air and an axially distal outlet. The channel walls converge inwardly towards the outlet and swirl vanes extend between opposing faces of the walls. The swirler turns incoming air to create a vortex at the channel outlet. An annular cooling apparatus associated with the air swirler is arranged axially adjacently downstream of the channel outlet(s), and includes a skirt portion radially spaced from a converging portion of the outermost channel wall defining a converging portion of a bowed coolant channel. A radially outwardly extending wall connects with the outermost channel wall and, with a face of the skirt portion, defines a radially outwardly extending portion of the bowed coolant channel adapted for increased heat exchange.

    Abstract translation: 环形空气旋流器，其构造成在中心孔中接收燃料喷射器。 旋流器具有由径向面对的通道壁限定的一个或多个环形通道，并且具有用于接收压缩空气和轴向远端出口的入口。 通道壁向内朝向出口汇合，并且涡流叶片在壁的相对面之间延伸。 旋流器使进入的空气在通道出口处产生涡流。 与空气旋流器相关联的环形冷却装置在通道出口的下游轴向相邻地布置，并且包括与限定弯曲冷却剂通道的会聚部分的最外通道壁的会聚部分径向间隔开的裙部。 径向向外延伸的壁与最外面的通道壁连接，并且裙部的一个表面限定了适合于增加热交换的弯曲冷却剂通道的径向向外延伸的部分。

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