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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
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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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
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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