Servovalve
AssigneeHamilton Sundstrand Corporation
InventorMarcin Cis
Life of this patent
Estimating the term…
Abstract
A servovalve includes a fluid transfer valve assembly comprising a supply port and a control port a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal; and a jet pipe assembly configured to direct fluid to the ends of the spool to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow. The jet pipe assembly includes a jet pipe and a connector header fluidly connecting the jet pipe to a nozzle via which fluid is directed to the spool ends. One or more openings is provided in the spool such that fluid from the supply port flows into the interior of the spool and into the jet pipe and to the nozzle via the connector header.
Claims13
A servovalve comprising:
- a fluid transfer valve assembly comprising a supply port and a control port;
- a moveable valve spool arranged to regulate flow of fluid from the supply port to the control port in response to a control signal;
- and
- a jet pipe assembly configured to axially move the valve spool relative to the fluid transfer assembly in response to the control signal to regulate the fluid flow;
- wherein the jet pipe assembly comprises a steerable nozzle from which fluid is directed to the ends of the spool in an amount determined by the control signal;
- and
- wherein fluid is provided to the nozzle via a connector header provided on the jet pipe in fluid communication with the interior of the spool, the spool being provided with one or more openings via which fluid from the supply port enters the interior of the spool and flows into the jet pipe and connector header and to the nozzle;
- and
- wherein the jet pipe assembly extends into the interior of the spool and the connector header is secured in position relative to the valve assembly by clamps or screws.
Dependencies are inferred from the claim text.