Valve assembly
AssigneeHamilton Sundstrand Corporation
InventorsChristopher McAuliffe, Bruce R. Schroder
Life of this patent
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Abstract
A valve assembly is provided and includes a poppet disposed to regulate a pressure of a fluid flowing through a pathway defined between the poppet and a valve body, a drive element configured to modulate a pressure of a servo fluid to thereby control a position of the poppet relative to the valve body and an actuator body coupled to the poppet and configured to deliver a supply fluid to the drive element from a first cavity defined between the poppet and the actuator body and to deliver the servo fluid from the drive element to a second cavity defined between the actuator body and the poppet. The poppet defines a filter through which fluid flows from the pathway into the first cavity as the supply fluid.
Claims20
A valve assembly, comprising:
- a poppet disposed to regulate a pressure of a fluid flowing through a pathway defined between the poppet and a valve body;
- a drive element configured to modulate a pressure of a servo fluid to thereby control a position of the poppet relative to the valve body;
- and
- an actuator body coupled to the poppet and configured to deliver a supply fluid to the drive element from a first cavity defined between the poppet and the actuator body and to deliver the servo fluid from the drive element to a second cavity defined between the actuator body and the poppet,
- the poppet including a conical portion to abut a valve seat and prevent fluid flow through the pathway with the poppet occupying a closed position, the conical portion defining a filter through which fluid flows from the pathway into the first cavity as the supply fluid with the poppet occupying open and intermediate positions at which the poppet is displaced from the valve seat but not with the poppet occupying the closed position.
A valve assembly for a valve body, the valve assembly comprising:
- a poppet disposed to regulate a pressure of a fluid flowing in a first direction through a pathway defined between the valve body and the poppet;
- a drive element configured to modulate a pressure of a servo fluid to thereby control a position of the poppet relative to the valve body;
- and
- an actuator body coupled to the poppet and configured to deliver a supply fluid to the drive element from a first cavity defined between the poppet and the actuator body and to deliver the servo fluid from the drive element to a second cavity defined between the actuator body and the poppet,
- the poppet including a conical portion having a tapered surface configured to abut a valve seat of the valve body with the poppet occupying a closed position and thereby preventing fluid flow through the pathway, the tapered surface defining filtering through-holes by which fluid flows in a second direction, which is traverse to the first direction, from the pathway into the first cavity as the supply fluid with the poppet occupying open and intermediate positions at which the poppet is displaced from the valve seat but not with the poppet occupying the closed position.
Dependencies are inferred from the claim text.