Hybrid vane island diffuser

F - Mech Eng,Light,Heat,Weapons – 02 – C

Patent

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Details

F02C 7/00 (2006.01) B21K 3/00 (2006.01) F01D 25/24 (2006.01) F04D 29/44 (2006.01)

Patent

CA 2544458

A gas turbine engine diffuser comprises a bowl-shaped diffuser casing and a cover nested into the bowl-shaped diffuser casing and cooperating therewith in defining a diffuser passage having a channeled entry portion in fluid flow communication with a vaned exit portion via a vaneless intermediate portion. The channeled entry portion is divided into an array of inlet flowpaths by a first set of vanes. Likewise, the vaned exit portion is divided into an array of outlet flowpaths by a second set of vanes.

L'invention concerne un diffuseur à moteur à turbine à gaz comprenant un logement de diffuseur en forme de cuve et un dispositif de recouvrement intégré au diffuseur en forme de cuve, et définissant avec celui-ci un passage présentant une entrée en communication fluidique avec une sortie à ailettes via une partie intermédiaire sans ailettes. L'entrée striée est divisée en un réseau de voies d'écoulement d'entrée par un premier ensemble d'ailettes. De la même manière, la sortie à ailettes est divisée en un réseau de voies d'écoulement de sortie par un second ensemble d'ailettes.

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