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1. (WO2018146404) CASING FOR REDUCING OVERPRESSURE IN THE VICINITY OF THE UPSTREAM JOINT OF A TURBOJET BEARING HOUSING

Pub. No.:    WO/2018/146404    International Application No.:    PCT/FR2018/050274
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Tue Feb 06 00:59:59 CET 2018
IPC: F01D 25/16
F01D 25/18
Applicants: SAFRAN AIRCRAFT ENGINES
Inventors: PATARD, Frédéric, François, Jean-Yves
BEAUJARD, Antoine, Jean-Philippe
BOUILLER, Philippe, Pierre, Vincent
CAPLAIN, Christophe
ROTENBERG, Maxime, Aurélien
Title: CASING FOR REDUCING OVERPRESSURE IN THE VICINITY OF THE UPSTREAM JOINT OF A TURBOJET BEARING HOUSING
Abstract:
The invention relates to a turbojet bearing housing comprising a stationary envelope (13) through which a rotor (2) passes, said envelope (13) comprising a cylindrical end (32) surrounding a joint (18) that ensures the tightness of the cylindrical end (32) of the envelope with the rotor (2), said envelope (13) being provided with a casing (37) screwed onto the cylindrical end (32) thereof, said casing (37) comprising radial channels (47) that open up opposite said joint (18) and are arranged such that an air stream passing through the joint (18) towards the housing comes mainly from said radial channels (47).