US 11,753,964 B2
Oil-cooled carbon seal
Nigel David Sawyers-Abbott, South Glastonbury, CT (US); Armando Amador, Wethersfield, CT (US); and Todd A. Davis, Tolland, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on May 14, 2021, as Appl. No. 17/320,593.
Application 17/320,593 is a continuation in part of application No. 16/173,500, filed on Oct. 29, 2018, granted, now 11,236,636.
Claims priority of provisional application 63/125,801, filed on Dec. 15, 2020.
Prior Publication US 2022/0049624 A1, Feb. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F01D 25/18 (2006.01); F16J 15/16 (2006.01); F01D 11/00 (2006.01); F01D 25/12 (2006.01)
CPC F01D 25/183 (2013.01) [F01D 11/00 (2013.01); F01D 25/12 (2013.01); F16J 15/162 (2013.01); F05D 2220/32 (2013.01); F05D 2240/55 (2013.01); F05D 2260/232 (2013.01)] 20 Claims
OG exemplary drawing
1. A seal system comprising:
a first member;
a seal carried by the first member and having a seal face; and
a second member rotatable relative to the first member about an axis and having:
a seat on a first piece of the second member, the seat having a seat face in sliding sealing engagement with the seal face; and
a radially outwardly closed collection channel for collecting centrifuged oil;
a second piece encircling and attached to the first piece and:
having a circumferential array of apertures; and
cooperating with the first piece to define a plenum; and
a flowpath from the collection channel passing radially outward axially spaced from the seat face to cool the seat face and passing axially away from the seat face in the plenum.