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公开(公告)号：US4532951A
公开(公告)日：1985-08-06
申请号：US479657
申请日：1983-03-28
申请人： Raymond J. Fermanich
发明人： Raymond J. Fermanich
CPC分类号： F15B5/003 , Y10T137/2365
摘要： An electrical-pneumatic transducer includes a pneumatic relay in which the pressure of the air at the outlet varies in accordance with the back pressure of the air at a bleed nozzle in the relay. This back pressure is changed by the armature of a solenoid with the armature opposing the nozzle outlet and being urged toward the latter with a force responsive to a signal in the form of current flowing through the solenoid coil. The magnitude of the current is correlated with the magnitude of a variable condition. The force on the armature, which is a permanent magnet, is selectively set to calibrate the transducer by means of a second permanent magnet which is axially aligned with the armature and is adjustably movable toward and away from the latter.
摘要翻译： 电气换能器包括气动继电器，其中出口处的空气压力根据继电器中的放气喷嘴处的空气的背压而变化。 这个背压由具有电枢与喷嘴出口相对的螺线管的电枢改变，并且以对流过电磁线圈的电流形式的信号作出响应的力而朝向后者。 电流的大小与可变条件的大小相关。 作为永磁体的电枢上的力被选择性地设置为通过与电枢轴向对准的第二永磁体校准换能器，并且可调节地朝向和远离电枢移动。
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公开(公告)号：US4042173A
公开(公告)日：1977-08-16
申请号：US610122
申请日：1975-09-04
CPC分类号： F24F11/04 , G05D7/03 , F24F2011/0038 , Y10T137/7759
摘要： A butterfly damper, controlling volume air flow through a duct, is biased toward a closed position at least partially by aerodynamic pressure and is moved against its bias by a small pneumatic actuator in response to a sensed condition. The position of the damper is stabilized by a feedback and oscillations are damped.
摘要翻译： 控制体积空气流过管道的蝶形阻尼器至少部分地被空气动力学压力偏置到关闭位置，并响应于检测到的状况而被小型气动致动器抵抗其偏压运动。 阻尼器的位置通过反馈稳定，振荡被阻尼。
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