ADJUSTABLE SNAP ACTION PASSIVE INLINE AIR VALVE

A valve assembly includes a piston housing (20) inside a flow duct (18) between an inlet and an outlet so as to form an annular flow passage (22) between the flow duct and the piston housing. The piston housing is axially aligned with a center axis of the flow duct. A piston (26) is inside the pisto...

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Bibliographische Detailangaben
Hauptverfasser:	Kamp, Josh, DeFelice, Robert, Simpson, Scott W
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS JET-PROPULSION PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A valve assembly includes a piston housing (20) inside a flow duct (18) between an inlet and an outlet so as to form an annular flow passage (22) between the flow duct and the piston housing. The piston housing is axially aligned with a center axis of the flow duct. A piston (26) is inside the piston housing and is configured to extend downstream of the piston housing in a closed position. A spring (32) biases the piston to the open position. A fluid chamber is between the piston and an upstream end of the piston housing. A control opening extends through the upstream end of the piston housing and fluidically communicates with the flow duct and the fluid chamber. A control piston (64) and a control spring (66) are inside the piston housing. The control spring biases the control piston toward a first position that obstructs the control opening.