The Boeing Company

Roderick M Jones

Brian Dale Hlavka

Eric James Bultemeier

Gail Mary Barker

A personal valve apparatus includes an air inlet, an air outlet, a nozzle, a valve seat, and a moveable poppet valve. The nozzle comprises an inner air-flow surface having a nozzle cavity, extending along the inner air-flow surface, in communication with the air inlet. The valve seat comprises a seat member disposed over the nozzle cavity at the air inlet. The moveable poppet valve is disposed over the seat member and the nozzle cavity at the air inlet. The moveable poppet valve comprises a convex surface. When the moveable poppet valve is in an open position, the convex surface is disposed over and apart from the seat member at the air inlet and configured to allow air to flow from the air inlet, against the convex surface at the air inlet, between the seat member and the convex surface at the air inlet, into and through the nozzle cavity, and out of the air outlet.

Noise reducing poppet valve

Aircraft, environmental control systems, and air diffusers that may be used to create a quiet, comfortable environment within an aircraft cabin are disclosed. The air diffusers include a duct, a grille, and a porous flow conditioner positioned at least partially within an outlet plenum of the duct. The porous flow conditioner is configured to create backpressure and to reduce a velocity of air flowing out of the porous flow conditioner, relative to air flow unaffected by the porous flow conditioner. The porous flow conditioner may be configured to reduce noise generated by air flow through the air diffuser assembly, relative to air flow unaffected by the porous flow conditioner. The porous flow conditioner may be configured to reduce noise generated by air flow downstream of the porous flow conditioner.

Growing community of inventors

Mill Creek, WA, United States of America

Roderick M Jones