公开(公告)号：US20220275760A1

公开(公告)日：2022-09-01

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 ,  F02C3/04 ,  F02C7/06 ,  F02C7/36 ,  B64D27/10 ,  B64D35/02 ,  F16J15/34

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：US20220162995A1

公开(公告)日：2022-05-26

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 ,  F02C3/04 ,  F02C7/06 ,  F02C7/36 ,  B64D27/10 ,  B64D35/02 ,  F16J15/34

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：US20210332758A1

公开(公告)日：2021-10-28

申请号：US16859328

申请日：2020-04-27

Applicant: Raytheon Technologies Corporation

Inventor： Benjamin Nasman ,  Michael M. Davis

IPC: F02C7/22 ,  F23R3/28

Abstract: An assembly is provided for rotational equipment. This assembly includes a first component, a static structure, a guide rail and a second component. The static structure includes a static structure fluid passage. The guide rail is mounted to the static structure. The guide rail includes a guide rail fluid passage and a nozzle. The guide rail fluid passage fluidly couples the static structure fluid passage to a nozzle orifice of the nozzle. The nozzle is configured to direct fluid onto the first component through the nozzle orifice. The second component is mated with and configured to translate along the guide rail.