- Patent Title: Gas turbine engine dual sealing cylindrical variable bleed valve
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Application No.: US15083392Application Date: 2016-03-29
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Publication No.: US10208676B2Publication Date: 2019-02-19
- Inventor: Steven Douglas Johnson , Brandon Wayne Miller , Craig Alan Gonyou
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: General Electric Company
- Agent Brian Overbeck
- Main IPC: F02C9/18
- IPC: F02C9/18 ; B64D13/08 ; F01D25/14 ; F02C3/04 ; F02C7/18 ; F02K3/06 ; F01D17/10 ; F02K3/075

Abstract:
Axially adjacent annular booster bleed aft and forward plenums with annular common wall therebetween extend radially outwardly from transition duct. Variable bleed valve includes bleed valve door in bleed inlet in transition duct, attached to rotatable valve body rotatable about axis of rotation, operable to open and close bleed inlet to aft plenum. Rotatable plenum door clocked or circumferentially spaced apart from variable bleed valve door and attached to rotatable valve body, operable to close and open up and control flow through an inter plenum aperture in common wall. Aft and forward bleed exhaust ducts extend from booster bleed aft and forward plenums to bypass flow path. One or more heat exchanger, such as from thermal management system, may be disposed in the bleed exhaust ducts. Heat exchangers may be used for cooling oil for power gear box and/or engine bearings, air conditioning, or variable frequency generator.
Public/Granted literature
- US20170284303A1 GAS TURBINE ENGINE DUAL SEALING CYLINDRICAL VARIABLE BLEED VALVE Public/Granted day:2017-10-05
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