公开(公告)号：US11434828B2

公开(公告)日：2022-09-06

申请号：US17104489

申请日：2020-11-25

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller ,  Colin D. Craig ,  Michael M. Davis

IPC: F02C7/28 ,  B64D27/10 ,  B64D35/02 ,  F02C3/04 ,  F02C7/06 ,  F02C7/36 ,  F16J15/34 ,  F16H1/28

Abstract: A bearing is mounted to a static structure outwardly of the shaft, and supporting the shaft. A bearing compartment is defined by face seal arrangements on each of two axial sides of a bearing. Each face seal arrangement includes a seal seat rotating with the shaft and a non-rotating sealing ring. The seal housing is exposed to high pressure air outward of the bearing compartment. A coil spring biases the seal housing towards the seal seat, such that the sealing face is biased into contact with the seal seat by a bias force including a net fluid force acting on the seal housing and the coil spring. The sealing face is defined by a contact portion contacting the seal seat and a feed portion recessed from the seal seat. The feed portion includes a plurality of circumferentially spaced feed slots fluidly connected to at least one annular groove.

公开(公告)号：US20210363893A1

公开(公告)日：2021-11-25

申请号：US16877636

申请日：2020-05-19

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller

IPC: F01D11/00 ,  F16J15/34

Abstract: A seal assembly includes an annular seal support, and an annular seal housing operably connected to the seal support. The seal housing includes a first axial surface facing away from the seal support, and a second axial surface opposite the first axial surface. A seal is located at the first axial surface. One or more first springs extend between the seal support and the second axial surface to urge the seal housing away from the seal support, and one or more second springs are located at the first axial surface to urge the seal housing toward the seal support.

公开(公告)号：US20210355836A1

公开(公告)日：2021-11-18

申请号：US15930644

申请日：2020-05-13

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller

IPC: F01D11/00 ,  F01D25/16

Abstract: A seal assembly includes a rotating seal runner having an outer radial surface, and one or more rotationally stationary seal rings located radially outboard of the seal runner. Each seal ring has an inner radial surface, with the inner radial surface and the outer radial surface defining a sealing interface therebetween. An axially extending shape of the inner radial surface is selected utilizing a predicted shape of the outer radial surface at a selected operating condition of the seal assembly.

公开(公告)号：US11624325B2

公开(公告)日：2023-04-11

申请号：US17747158

申请日：2022-05-18

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller ,  Colin D. Craig ,  Michael M. Davis

IPC: F02C7/28 ,  B64D27/10 ,  B64D35/02 ,  F02C3/04 ,  F02C7/06 ,  F02C7/36 ,  F16J15/34 ,  F16H1/28

Abstract: A bearing is mounted to a static structure outwardly of the shaft, and supporting the shaft. A bearing compartment is defined by face seal arrangements on each of two axial sides of a bearing. Each face seal arrangement includes a seal seat rotating with the shaft and a non-rotating sealing ring. The seal housing is exposed to high pressure air outward of the bearing compartment. A coil spring biases the seal housing towards the seal seat, such that the sealing face is biased into contact with the seal seat by a bias force including a net fluid force acting on the seal housing and the coil spring. The sealing face is defined by a contact portion contacting the seal seat and a feed portion recessed from the seal seat. The feed portion includes a plurality of circumferentially spaced feed slots fluidly connected to at least one annular groove.

公开(公告)号：US11549384B2

公开(公告)日：2023-01-10

申请号：US16877636

申请日：2020-05-19

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller

IPC: F01D11/00 ,  F16J15/34

Abstract: A seal assembly includes an annular seal support, and an annular seal housing operably connected to the seal support. The seal housing includes a first axial surface facing away from the seal support, and a second axial surface opposite the first axial surface. A seal is located at the first axial surface. One or more first springs extend between the seal support and the second axial surface to urge the seal housing away from the seal support, and one or more second springs are located at the first axial surface to urge the seal housing toward the seal support.

公开(公告)号：US11459956B2

公开(公告)日：2022-10-04

申请号：US17104459

申请日：2020-11-25

Applicant: Raytheon Technologies Corporation

Inventor： Jonathan Logan Miller ,  Nasr A. Shuaib ,  Christopher J. Larson

IPC: F02C7/28 ,  F02C7/06 ,  F02C7/36 ,  F02K3/06

Abstract: A face seal arrangement includes a seal seat rotating with the shaft and a non-rotating face seal including a sealing ring. The sealing ring includes a sealing face biased into contact with the seal seat. The sealing ring also has a groove defined remote from the seal face relative to the seal seat. The groove provides a pressure face that will be exposed to high pressure air outward of the bearing compartment. A coil spring biases the seal housing towards the seal seat, such that the sealing face of the sealing ring is biased into contact with seal seat by air pressure against the pressure face, and the coil spring. A balance ratio is defined between an area of the pressure face and an area of the sealing face, the balance ratio is between 0.5 and 0.64.