公开(公告)号：US10519804B2

公开(公告)日：2019-12-31

申请号：US15492393

申请日：2017-04-20

Applicant: ROLLS-ROYCE plc

Inventor： Merijn Alexander Brand Van Den Berg

IPC: F01D25/18 ,  F16C33/66 ,  F01D25/16 ,  F01D25/20 ,  F16C37/00 ,  F16N7/36 ,  F16N39/00

Abstract: An oil chamber wall arrangement is described as comprising: a chamber wall surrounding a rotor; a plurality of apertures defining through-holes for a flow of oil through the chamber wall, the apertures being defined by a pair of axially separated opposing walls and a pair of circumferentially opposing walls wherein the circumferentially opposing walls are separated by a midline which is radial to the rotational axis of the rotor and at least one of the pair of circumferentially opposing walls is not parallel to the radial midline.