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US 2020/0047891 A1Published application
Fan bypass and shutoff check valve
AssigneeHamilton Sundstrand Corporation
InventorsDonald E. Army, Frederick Peacos, III
Life of this patent
Estimating the term…
Abstract
A ram air fan and fan bypass shutoff check valve assembly includes a ram air fan configured to draw an airflow through a fan inlet, and a ram fan bypass duct positioned downstream of the ram air fan. The ram fan bypass duct includes a valve assembly configured to selectably direct the airflow through the ram air fan when the valve assembly is in an open position, and direct the airflow through a bypass duct thereby bypassing the ram air fan when the valve assembly is in a closed position.
Claims5
A check valve for a ram air fan assembly, comprising:
- a support having a plurality of support openings therein in fluid communication with the bypass duct;
- an inner cage disposed in the support having a plurality of cage openings therein;
- and
- a plurality of flappers rotatably secured to the inner cage, the plurality of flappers movable between the open position covering the plurality of support openings, and the closed position covering the plurality of cage openings.
1 more element
Dependencies are inferred from the claim text.