Fluid conduits with heat shielding
    31.
    发明授权

    公开(公告)号:US11369985B2

    公开(公告)日:2022-06-28

    申请号:US16593674

    申请日:2019-10-04

    Applicant: Delavan Inc.

    Abstract: A method includes forming fluid conduit inside a heat shield in an additive manufacturing process, removing powder from an interior passage of the fluid conduit and from an insulation gap defined between the fluid conduit and the heat shield, separating the heat shield and fluid conduit from the build platform, and shifting the fluid conduit to a shifted position relative to the heat shield. The method includes securing the fluid conduit to the heat shield in the shifted position.

    AXIALLY ORIENTED INTERNALLY MOUNTED CONTINUOUS IGNITION DEVICE: REMOVABLE NOZZLE

    公开(公告)号:US20220195936A1

    公开(公告)日:2022-06-23

    申请号:US17125114

    申请日:2020-12-17

    Applicant: Delavan Inc.

    Abstract: An embodiment of a combustor for a gas turbine engine includes a combustor case, a combustor liner disposed within the combustor case, a fuel nozzle at an upstream end of the combustor liner, a torch igniter within the combustor case, and a removable fuel injector. The torch igniter includes a combustion chamber, a cap configured to receive a removable fuel injector and a surface igniter, a tip, an annular igniter wall extending from the cap to the tip and defining a radial extent of the combustion chamber, a structural wall coaxial with and surrounding the igniter wall, and an outlet passage within the tip which fluidly connects the combustion chamber to the combustor. The removable fuel injector extends through a fuel injector opening of the combustor case. The diameter of the fuel injector opening is wider than a fuel injector diameter of the removable fuel injector.

    SURFACE IGNITER COOLING SYSTEM
    33.
    发明申请

    公开(公告)号:US20220136696A1

    公开(公告)日:2022-05-05

    申请号:US17089254

    申请日:2020-11-04

    Applicant: Delavan Inc.

    Abstract: An embodiment of a torch igniter for a combustor of a gas turbine engine includes a combustion chamber oriented about an axis, a cap defining an axially upstream end of the combustion chamber, a tip defining the axially downstream end of the combustion chamber, an igniter wall extending from the cap to the tip and defining a radial extent of the combustion chamber, a structural wall coaxial with and surrounding the igniter wall, an outlet passage defined by the igniter wall within the tip, a glow plug housing configured to receive a glow plug and allow an innermost end of the glow plug to extend into the combustion chamber, and a cooling system. The cooling system includes an air inlet formed within an exterior of the structural wall, a cooling channel forming a flow path through the structural wall at the glow plug housing, and an air passage.

    Internal fuel/air heat exchangers
    34.
    发明授权

    公开(公告)号:US11274601B2

    公开(公告)日:2022-03-15

    申请号:US16696624

    申请日:2019-11-26

    Applicant: Delavan Inc.

    Abstract: A system includes an engine case. A heat exchanger is included inside the engine case. The heat exchanger includes an air passage and a fuel passage. The air passage and fuel passage are in fluid isolation from one another, but are in thermal communication with one another for exchange of heat.

    Fuel manifolds
    35.
    发明授权

    公开(公告)号:US11226100B2

    公开(公告)日:2022-01-18

    申请号:US16518240

    申请日:2019-07-22

    Applicant: Delavan Inc.

    Abstract: A fuel injection system includes an outer support defining a fuel manifold and an inner support, with a feed arm extending radially between the inner support and the outer support. A plurality of outlet openings extending in an axial direction from the feed arm for feeding respective injection nozzles. The feed arm defines a plurality of fuel passages therethrough in fluid communication with the fuel manifold and outlet openings to supply fuel from the fuel manifold to the outlet openings. A heat shield extends from the outer support to the inner support and extends about the outer support and the feed arm to provide heat shielding to the fuel manifold and the fuel passages.

    MIXING NOZZLES
    36.
    发明申请
    MIXING NOZZLES 审中-公开

    公开(公告)号:US20200306703A1

    公开(公告)日:2020-10-01

    申请号:US16370731

    申请日:2019-03-29

    Applicant: Delavan Inc.

    Abstract: A nozzle includes an outer gas flow path, an inner gas flow path radially inward from the outer gas flow path, a liquid flow path defined radially between the inner gas flow path and the outer air flow path, and a core conduit defined radially inward from the inner gas flow path. An injector assembly includes an outer housing, a nozzle within the outer housing, and an outer housing gas flow path defined radially outward from the nozzle between an inner surface of the outer housing and an outer surface of the nozzle. The nozzle includes an outer gas flow path, an inner gas flow path radially inward from the outer gas flow path, a liquid flow path defined radially between the inner gas flow path and the outer gas flow path and a core conduit defined radially inward from the inner gas flow path.

    Injectors for multipoint injection
    37.
    发明授权

    公开(公告)号:US10309651B2

    公开(公告)日:2019-06-04

    申请号:US14835654

    申请日:2015-08-25

    Applicant: Delavan Inc

    Abstract: An injector for a multipoint combustor system includes an inner air swirler which defines an interior flow passage and a plurality of swirler inlet ports in an upstream portion thereof. The inlet ports are configured and adapted to impart swirl on flow in the interior flow passage. An outer air cap is mounted outboard of the inner swirler. A fuel passage is defined between the inner air swirler and the outer air cap, and includes a discharge outlet between downstream portions of the inner air swirler and the outer air cap for issuing fuel for combustion. The outer air cap defines an outer air circuit configured for substantially unswirled injection of compressor discharge air outboard of the interior flow passage.

    Torch ignitors with gas assist start

    公开(公告)号:US11708793B2

    公开(公告)日:2023-07-25

    申请号:US17133054

    申请日:2020-12-23

    Applicant: Delavan Inc.

    Abstract: An embodiment of a torch ignitor system for combustor of a gas turbine engine includes a torch ignitor, the torch ignitor having a combustion chamber oriented about an axis, the combustion chamber having axially upstream and downstream ends defining a flow direction through the combustion chamber, along the axis. The torch ignitor system also includes a cap defining the axially upstream end of the combustion chamber and oriented about the axis, wherein the cap is configured to receive a fuel injector and at least one glow plug, a tip at a downstream end of the combustion chamber, and a passage for pressurized oxygen containing gas passing through the cap from an exterior of the combustion chamber and in fluid communication with the combustion chamber. An embodiment of a method for starting a gas turbine engine is also disclosed.

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