Ejector assembly
AssigneeHamilton Sundstrand Corporation
InventorsDarryl A. Colson, Harold W. Hipsky
Life of this patent
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Abstract
A recirculation flow collector for a fan includes an arcuate housing; a first face with a first circular opening to receive flow; a second face with a second circular opening to allow flow in a normal fan operating condition; and an outlet in a bottom of the arcuate housing to allow recirculation flow.
Claims19
A recirculation flow collector for a fan, the collector comprising:
- an arcuate housing;
- a first face with a first circular opening to receive flow;
- a second face with a second circular opening to allow flow in a normal fan operating condition;
- and
- an outlet in a bottom of the arcuate housing to allow recirculation flow.
A ram air fan ejector assembly comprising:
- an outer housing with a recirculation exit on one side;
- and
- a recirculation flow collector with an outlet on one side which sits inside the outer housing and directs flow through the recirculation exit to the outlet in a fan recirculation condition.
A ram air fan comprising:
- a fan housing;
- a fan motor attached to the fan housing;
- a fan rotor;
- a thrust shaft connecting the fan motor to the fan rotor;
- an outer housing attached to the fan housing with a recirculation exit on one side;
- and
- a recirculation flow collector with an outlet on one side, the collector secured inside the outer housing so that the recirculation exit and the outlet align to direct flow through the recirculation exit and the outlet in a recirculation condition.
A method of operating a ram air fan in a recirculation condition, the method comprising:
- collecting air coming from the fan in a recirculation flow collector;
- directing the air coming from the fan through an outlet in one side of a recirculation flow collector;
- and
- directing the air coming out of the outlet back to an inlet of the fan.
A method of installing a ram air fan ejector assembly, the method comprising:
- inserting a recirculation flow collector for a fan into an outer housing so that an outlet on one side of the collector alights with a recirculation exit in the outer housing;
- and
- securing the collector and outer housing to a flow path housing.
Dependencies are inferred from the claim text.