Tangential on-board injector
AssigneePratt & Whitney Canada Corp.
InventorsChristophe Tremblay, Franco Di Paola, Olivier Nadeau
Life of this patent
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Abstract
The gas turbine engine includes a casing assembly located proximate a turbine section of the gas turbine engine, and a tangential on-board injector (TOBI) having a body defining a plurality of air passages extending in a radial direction, the plurality of air passages circumferentially distributed and directing cooling air toward a turbine rotor of the turbine section of the gas turbine engine. An interference fit is provided between a face of the body and a face of a member of the casing assembly, the interference fit defining a fastener-free engagement between the bearing housing and the TOBI to prevent relative movement between the member of the casing and the TOBI.
Claims19
A gas turbine engine comprising:
- a casing assembly extending circumferentially around a central axis of the gas turbine engine, the casing assembly located proximate a turbine section of the gas turbine engine;
- a tangential on-board injector (TOBI) having a body annularly extending around the central axis, the body defining a plurality of air passages extending in a radial direction relative to the central axis, the plurality of air passages circumferentially distributed about the central axis and directing cooling air toward a turbine rotor of the turbine section of the gas turbine engine;
- and
- an interference fit between a face of the body and a face of a member of the casing assembly, the interference fit defining a fastener-free engagement between the member of the casing and the TOBI to prevent relative movement therebetween.
A tangential in-board injector (TOBI) assembly for a gas turbine engine, comprising:
- a bearing housing securable to a casing of the gas turbine engine, the bearing housing extending circumferentially around a central axis;
- a TOBI having:
- a central section defining primary air passages circumferentially distributed about the central axis, the air primary air passages extending in a direction having a radial component relative to the central axis, and
- a lateral section extending from the central section;
- and
- an interference fit between the bearing housing and the lateral section of the TOBI, the interference fit defining a fastener-free engagement between the bearing housing and the TOBI.
Dependencies are inferred from the claim text.