Invention Grant
- Patent Title: Mid-turbine frame buffer system
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Application No.: US13879471Application Date: 2013-01-07
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Publication No.: US09382844B2Publication Date: 2016-07-05
- Inventor: Marc J. Muldoon , Gregory E. Reinhardt
- Applicant: United Technologies Corporation
- Applicant Address: US CT Hartford
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Hartford
- Agency: Carlson, Gaskey & Olds, P.C.
- International Application: PCT/US2013/020466 WO 20130107
- International Announcement: WO2013/147969 WO 20131003
- Main IPC: F02C7/28
- IPC: F02C7/28 ; F02C7/20 ; F01D11/02 ; F01D25/16 ; F01D25/28 ; F16J15/40 ; F01D11/04 ; F01D25/18 ; F01D25/20 ; F02K3/06 ; F02C6/08

Abstract:
A mid-turbine frame buffer system for a gas turbine engine includes a mid-turbine frame that supports a shaft by a bearing. An air compartment and a bearing compartment are arranged radially inward of the mid-turbine frame. The bearing compartment is arranged within the air compartment and includes first and second contact seals arranged on either side of the bearing. The air compartment includes multiple air seals. A high pressure compressor is fluidly connected to the air compartment and is configured to provide high pressure air to the air compartment. A method of providing pressurized air to a buffer system includes sealing a bearing compartment with contact seals, surrounding the bearing compartment with an air compartment, and supplying high pressure air to the air compartment.
Public/Granted literature
- US20140075951A1 MID-TURBINE FRAME BUFFER SYSTEM Public/Granted day:2014-03-20
Information query
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