Invention Grant
- Patent Title: Passively-driven bleed source switching
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Application No.: US15601563Application Date: 2017-05-22
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Publication No.: US10473037B2Publication Date: 2019-11-12
- Inventor: Jonathan Ortiz , William K. Ackermann , Matthew P. Forcier
- Applicant: United Technologies Corporation
- Applicant Address: US CT Farmington
- Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee: UNITED TECHNOLOGIES CORPORATION
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: F01D9/06
- IPC: F01D9/06 ; F02C9/18 ; F02C7/18 ; F02C6/08

Abstract:
A bleed air cooling system for a gas turbine engine includes one or more bleed flowpaths operably connected to a bleed outlet to divert a bleed airflow from a gas turbine engine flowpath. Each bleed flowpath includes two or more bleed ports to divert a bleed airflow from a gas turbine engine flowpath, a bleed duct configured to convey the bleed airflow from the two or more bleed ports to the bleed outlet, and a delta-pressure valve located at each bleed port of the two or more bleed ports configured to move between an opened position and a closed position in response to a difference between a first pressure upstream of the delta-pressure valve and a second pressure downstream of the delta pressure valve. The bleed airflow is selectably conveyed through a bleed port of the two or more bleed ports depending on the operation of the associated delta-pressure valve.
Public/Granted literature
- US20180334966A1 PASSIVELY-DRIVEN BLEED SOURCE SWITCHING Public/Granted day:2018-11-22
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