US 11,994,257 B2
Centrifugal de-aerator for aircraft engine
Marion Daniel, Montreal (CA); Pierre Gauvin, St-Bruno-de-Montarville (CA); and Adam Logan, Toronto (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on May 13, 2020, as Appl. No. 15/931,032.
Prior Publication US 2021/0356077 A1, Nov. 18, 2021
Int. Cl. F16N 39/00 (2006.01); B01D 19/00 (2006.01); F01D 25/18 (2006.01)
CPC F16N 39/002 (2013.01) [B01D 19/0052 (2013.01); F01D 25/18 (2013.01); F05D 2220/323 (2013.01); F05D 2260/609 (2013.01); F05D 2260/98 (2013.01); F16N 2210/02 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A de-aerator for a lubrication system of an aircraft engine, comprising:
a housing defining an air-oil inlet, an oil outlet, and an air outlet of the de-aerator;
a rotor received within the housing and rotatable relative to the housing about a central axis, the rotor having blades circumferentially distributed about the central axis and extending at least partially radially relative to the central axis, flow passages extending between the blades, the rotor having a hub circumferentially extending around the central axis and around the blades, the blades extending radially inwardly from the hub towards the central axis, the hub having a peripheral wall oriented radially inwardly and defining a fore opening leading to the flow passages; and
a gap between the housing and a peripheral outer face of the hub of the rotor, the peripheral outer face extending all around the central axis, a portion of the housing received within the fore opening and axially overlapping the peripheral wall of the hub, the gap having a fore gap inlet between the portion of the housing and the peripheral wall of the hub.