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    FACE SEAL ARRANGEMENT WITH REDUCED BALANCE RATIO
    1.
    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.

    FACE SEAL WITH INSERT
    5.
    发明申请
    FACE SEAL WITH INSERT 有权

    公开(公告)号：US20210190209A1

    公开(公告)日：2021-06-24

    申请号：US17190825

    申请日：2021-03-03

    Applicant: Raytheon Technologies Corporation

    Inventor： Changsheng Guo ,  Zaffir A. Chaudhry ,  Nasr A. Shuaib

    IPC: F16J15/34 ,  F01D11/00

    Abstract: A method of determining wear of a seal element includes rotating a seal plate relative to the seal element and such that the seal plate and the seal element form a rotational sealing interface. The seal element includes an insert embedded in the seal element. A portion of the seal element is worn with a sealing face of the seal plate. The insert is contacted with the sealing face of the seal plate. A portion of the insert is worn to create a wear particle of the insert. The presence of the wear particle in a lubrication oil is sensed with an oil monitoring system.

    Coil spring carbon face seal
    6.
    发明授权
    Coil spring carbon face seal 有权

    公开(公告)号：US11946548B2

    公开(公告)日：2024-04-02

    申请号：US17746221

    申请日：2022-05-17

    Applicant: Raytheon Technologies Corporation

    Inventor： Masayoshi Sonokawa ,  Jonathan F. Zimmitti ,  Nasr A. Shuaib ,  Sean P. McCutchan

    IPC: F16J15/34

    CPC classification number: F16J15/3452

    Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal housing; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and a plurality of coil springs biasing the seal face against the seat face, each coil spring having a first end and a second end. The seal has a plurality of spring compartments. Each of the plurality of coil springs is partially within a respective associated compartment of the plurality of spring compartments.

    Face seal arrangement with reduced balance ratio
    9.
    发明授权
    Face seal arrangement with reduced balance ratio 有权

    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.

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