Servo-valve and fluidic device
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United States of America Patent
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Apr 9, 2019
Grant Date -
Dec 28, 2017
app pub date -
Jun 26, 2017
filing date -
Jun 27, 2016
priority date (Note) -
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Abstract
Servo-valve that drives an actuator by using a fluid. The servo-valve includes a nozzle having a discharge edge forming an outline of a discharge port from which the fluid is discharged and a tapered inner wall growing narrower toward the discharge edge, and a receiver that is provided with a flow path into which the fluid discharged from the discharge port flows. The nozzle is displaced in a direction different from the fluid discharge direction. The flow path extension direction is inclined with respect to a direction orthogonal to an inflow surface facing the nozzle by an angle α. A taper angle determined by the tapered inner wall is larger than twice the angle α. With such a configuration, the component of flow force exerted from the fluid on the tapered inner wall decreases. Since the nozzle can be quickly displaced, response speed of the actuator is improved.
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