US 12,228,074 B2
Fan module provided with an oil transfer device
Julien Fabien Patrick Becoulet, Moissy-Cramayel (FR); Olivier Belmonte, Moissy-Cramayel (FR); Vincent François Georges Millier, Moissy-Cramayel (FR); and Jean Charles Olivier Roda, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/550,155
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Mar. 3, 2022, PCT No. PCT/FR2022/050378
§ 371(c)(1), (2) Date Sep. 12, 2023,
PCT Pub. No. WO2022/195191, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2102620 (FR), filed on Mar. 16, 2021.
Prior Publication US 2024/0159187 A1, May 16, 2024
Int. Cl. F02C 7/06 (2006.01); F01D 7/00 (2006.01); F01D 25/16 (2006.01); F16H 57/04 (2010.01); F16H 57/08 (2006.01)
CPC F02C 7/06 (2013.01) [F01D 7/00 (2013.01); F01D 25/16 (2013.01); F16H 57/043 (2013.01); F16H 57/0471 (2013.01); F16H 57/0486 (2013.01); F16H 57/082 (2013.01); F05D 2220/36 (2013.01); F05D 2230/60 (2013.01); F05D 2240/50 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/70 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A fan module for an aircraft turbine engine, the fan module comprising a fan comprising a fan shaft and variable pitch fan vanes, and an oil transfer device configured to ensure a transfer of oil between a stator and an actuator that is secured in rotation to the fan shaft and that is configured to control the pitch of the fan vanes, the oil transfer device comprising:
a stator annulus comprising an internal cylindrical surface and internal oil pipes each opening onto said internal cylindrical surface,
a shaft engaged in said annulus and comprising an external cylindrical surface extending inside said internal cylindrical surface, the shaft comprising internal oil pipes each opening onto said external cylindrical surface, the shaft further comprising an attachment member configured to be attached to a rotor of the turbine engine,
an annular support which extends at least partly around the annulus and which comprises at least one first attachment element configured to attach to the annulus and at least one second attachment element configured to be attached to a stator of the turbine engine,
a plain bearing (P) located between said internal and external cylindrical surfaces, and
upstream and downstream roller bearings mounted between the annulus and the shaft, on either side of the plain bearing (P), each of the upstream and downstream roller bearings comprising external rings and rollers carried by the annulus, the annulus being configured to be mounted on the shaft by engagement of the shaft in the annulus when the latter is pre-equipped with the external rings and with the rollers of the bearings,
wherein said support is configured to deform elastically so as to allow the annulus to displace in the radial direction.