High gain servo valve

摘要

A servo valve includes a movable throttling member positioned between a first opening and an opposing second opening, and a first inlet port and a second inlet port to convey a fluid flow toward the first and opening, respectively. A first inlet orifice, defined between the first inlet port and a first pressure reaction member, is located between and in fluid communication with the first inlet port and the first opening. A second inlet orifice, is located between and in fluid communication with the second inlet port and the second opening. The second pressure reaction member is secured to the first pressure reaction member at a substantially fixed distance. Each of the first inlet orifice and the second inlet orifice is variable via a change a pressure of the fluid flow downstream of the first inlet orifice and the second inlet orifice.

主权项

1. A servo valve comprising:
a movable throttling member disposed between a first opening and an opposing second opening; a first inlet port and a second inlet port to convey a fluid flow toward the first and second opening, respectively; a first inlet orifice disposed between and in fluid communication with the first inlet port and the first opening, the first inlet orifice defined between the first inlet port and a first pressure reaction member; and a second inlet orifice disposed between and in fluid communication with the second inlet port and the second opening, the second inlet orifice defined between the second inlet port and a second pressure reaction member, the second pressure reaction member secured to the first pressure reaction member at a substantially fixed distance; wherein each of the first inlet orifice and the second inlet orifice is variable via a change in a pressure of the fluid flow downstream of the first inlet orifice and the second inlet orifice, resulting in a change in pressure of a fluid urged downstream; wherein the first pressure reaction member and the second pressure reaction member are a first and second bellows.