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    FACE SEAL ARRANGEMENT FOR REDUCED FORCE AND PRESSURE
    4.
    发明申请
    FACE SEAL ARRANGEMENT FOR REDUCED FORCE AND PRESSURE 有权

    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.

    FACE SEAL ARRANGEMENT FOR REDUCED FORCE AND PRESSURE
    5.
    发明申请
    FACE SEAL ARRANGEMENT FOR REDUCED FORCE AND PRESSURE 有权

    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.

    FACE SEAL ARRANGEMENT WITH REDUCED BALANCE RATIO
    6.
    发明申请
    FACE SEAL ARRANGEMENT WITH REDUCED BALANCE RATIO 有权

    公开(公告)号：US20220162994A1

    公开(公告)日：2022-05-26

    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.

    Pressure-Balanced Carbon Seal
    7.
    发明公开
    Pressure-Balanced Carbon Seal 审中-公开

    公开(公告)号：US20230175409A1

    公开(公告)日：2023-06-08

    申请号：US17541712

    申请日：2021-12-03

    Applicant: Raytheon Technologies Corporation

    Inventor： Jonathan Logan Miller ,  Thomas P. Obligado

    IPC: F01D11/00 ,  F16J15/3284

    CPC classification number: F01D11/001 ,  F16J15/3284 ,  F05D2240/55

    Abstract: A seal segment has an arcuate body having: a first end; a second end circumferentially opposite the first end; a first face; a second face axially opposite the first face; an inner diameter (ID) face; and an outer diameter (OD) face. The seal segment is shaped to interfit with a plurality of identical seal segments first end to second end to form a seal surrounding a central longitudinal axis. The first face has: a circumferential channel closer to the ID face than the OD face; and a plurality of channels extending from the circumferential channel to the OD face. The ID face has: a circumferential channel closer to the first face than the second face; and a plurality of channels extending from the circumferential channel to the second face. The ID face circumferential channel has an open end.

    Pressure-balanced carbon seal
    9.
    发明授权
    Pressure-balanced carbon seal 有权

    公开(公告)号：US11713688B2

    公开(公告)日：2023-08-01

    申请号：US17541712

    申请日：2021-12-03

    Applicant: Raytheon Technologies Corporation

    Inventor： Jonathan Logan Miller ,  Thomas P. Obligado

    IPC: F01D11/00 ,  F16J15/3284

    CPC classification number: F01D11/001 ,  F16J15/3284 ,  F05D2240/55

    Abstract: A seal segment has an arcuate body having: a first end; a second end circumferentially opposite the first end; a first face; a second face axially opposite the first face; an inner diameter (ID) face; and an outer diameter (OD) face. The seal segment is shaped to interfit with a plurality of identical seal segments first end to second end to form a seal surrounding a central longitudinal axis. The first face has: a circumferential channel closer to the ID face than the OD face; and a plurality of channels extending from the circumferential channel to the OD face. The ID face has: a circumferential channel closer to the first face than the second face; and a plurality of channels extending from the circumferential channel to the second face. The ID face circumferential channel has an open end.

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