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    • 2. 发明授权
    • Fluidic set-point pressure sensor
    • 流体设定点压力传感器
    • US4733695A
    • 1988-03-29
    • US111848
    • 1987-10-13
    • George Mon
    • George Mon
    • F15C1/08F15C3/00
    • F15C1/08Y10T137/2202Y10T137/2234Y10T137/2262Y10T137/7737
    • A modified laminar proportional amplifier with feedback for converting the absolute pressure of a pressurized fluid to a differential pressure indicating the pressure of the pressurized fluid relative to a predetermined set-point pressure. The device includes two outlets separated by a splitter, a supply nozzle for directing a jet of the pressurized fluid toward a first of the two outlets at a velocity determined by the absolute pressure and a feedback path for deflecting the jet toward the second outlet such that as the jet increases to a maximum value and then decreases until the differential pressure between the two outlets is equal to zero when the absolute pressure of the pressurized fluid is equal to the predetermined set-point pressure. The feedback path includes an adjustable fluidic resistor and a temperature compensated flow controller for making the device insensitive to temperature.
    • 一种改进的层流比例放大器,其具有用于将加压流体的绝对压力转换为指示加压流体相对于预定设定点压力的压力的压差的反馈。 该装置包括由分流器分开的两个出口,用于以由绝对压力确定的速度将加压流体的射流引向两个出口中的第一出口的供应喷嘴和用于将射流偏转到第二出口的反馈路径,使得 当喷射器增加到最大值,然后减小,直到加压流体的绝对压力等于预定的设定点压力,两个出口之间的压差等于零。 反馈路径包括可调节流体电阻器和温度补偿流量控制器,用于使器件对温度不敏感。
    • 4. 发明授权
    • Fluidic absolute-to-differential pressure converter
    • 流体绝对至差压转换器
    • US4523611A
    • 1985-06-18
    • US492120
    • 1983-05-06
    • Tadeusz Drzewiecki
    • Tadeusz Drzewiecki
    • F15C1/08F15C1/06F15C4/00
    • F15C1/08Y10T137/2065Y10T137/2224Y10T137/2234Y10T137/224Y10T137/2262
    • A method and apparatus for converting the absolute pressure of a pressuri fluid to a differential pressure indicating the fluid pressure relative to a reference pressure. The pressurized fluid is directed asymmetrically into a laminar proportional amplifier (LPA) along a centerline toward a first of two outlets at a velocity determined by the fluid pressure. The LPA includes first and second control inlets disposed on opposite sides of the directed fluid jet and connected to a common source of control fluid, the first control inlet being disposed on the same side as the first outlet, and the second control inlet being disposed on the same side as the second outlet. The first and second control inlets include respective first and second downstream control edges which are asymmetrically disposed on opposite sides of the jet, with the second control edge being disposed closer than the first control edge to the centerline; consequently, the jet is deflected towards the second outlet in accordance with the jet velocity such that the differential pressure generated by the jet between the first and second outlets is zero when the fluid pressure is equal to the reference pressure.
    • 一种用于将加压流体的绝对压力转换为指示相对于参考压力的流体压力的压差的方法和装置。 加压流体以由流体压力确定的速度沿着中心线不对称地引导到两个出口中的第一个的层流比例放大器(LPA)。 所述LPA包括设置在所述有向流体射流的相对侧上的第一和第二控制入口,并连接到公共控制流体源,所述第一控制入口设置在与所述第一出口相同的一侧,并且所述第二控制入口设置在 与第二个出口相同。 第一和第二控制入口包括各自的第一和第二下游控制边缘,其不对称地设置在喷射器的相对侧上,其中第二控制边缘设置成比第一控制边缘更靠近中心线; 因此,射流根据喷射速度偏向第二出口,使得当流体压力等于参考压力时,第一和第二出口之间的射流产生的压差为零。
    • 5. 发明授权
    • Tube disconnection warning device
    • 管断线报警装置
    • US4067329A
    • 1978-01-10
    • US647199
    • 1976-01-07
    • Bernard Winicki
    • Bernard Winicki
    • G01M3/08A61M16/00A61M39/10G01M3/06G08C23/00
    • A61M16/0051A61M2039/1005A61M2205/13Y10T137/2262Y10T137/8326
    • A warning device of the disconnection of a tube from another tube, for example, of a respirator canula from a patient's medical equipment comprises: a source of gas under pressure; a pneumatic switch; a filter; an adjustable pressure reducing valve; and a pneumatic cell of the fully open -- fully closed type, supplied by said pressure-reducing valve. A sensing tube terminates in at least one orifice between the walls in contact of two said tubes when they are normally connected and controls the cell. A distributor is supplied by said pressure-reducing valve and controlled at its resting input and at its working input by the cell. At least one alarm means is supplied by the distributor. The said orifice may be an open end of said sensing tube, inserted between the walls in contact of the canula and of the apparatus of the patient.
    • 从患者的医疗设备中将管与例如呼吸器套管的另一个管断开的警告装置包括:在压力下的气体源; 气动开关; 过滤器 一个可调减压阀; 以及由所述减压阀供应的全开 - 全封闭式气动电池。 感测管终止于两个管之间的至少一个孔,当它们正常连接并且控制电池时,两个管接触。 分配器由所述减压阀供应,并在其静止输入端及其工作输入端被电池控制。 分配器至少提供一个报警装置。 所述孔口可以是所述感测管的开口端,插入在所述套管与患者的装置接触的壁之间。
    • 6. 发明授权
    • Flueric gas-to-liquid interface amplifier
    • 氟气气液界面放大器
    • US3811475A
    • 1974-05-21
    • US30245372
    • 1972-10-31
    • US ARMY
    • WOODS R
    • F15C1/00F15C1/14
    • F15C1/14F15C1/00Y10T137/2076Y10T137/2262
    • A flueric amplifier for controlling the flow of a liquid power jet by means of gaseous control pressure signals. The foregoing is accomplished without any moving parts. Substantially complete segregation of fluids is achieved. The amplifier operates with gaseous pressure-field deflection of a slightly turbulent liquid power jet. The amplifier has infinite input resistance and achieves single stage pressure gains in the neighboord of 25 along with extremely high power gains. The amplifier has a dynamic range and a bandwidth suitable for many applications.
    • 一种用于通过气体控制压力信号控制液体动力射流的流体放大器。 上述是没有任何移动部件完成的。 实现了基本上完全的流体分离。 放大器工作在轻微湍流液体动力射流的气体压力场偏转。 该放大器具有无限的输入电阻,并且在25的相邻位置实现单级压力增益以及极高的功率增益。 放大器具有适用于许多应用的动态范围和带宽。
    • 7. 发明授权
    • High speed decoupled fluidic switching device
    • 高速解码液体开关装置
    • US3720218A
    • 1973-03-13
    • US3720218D
    • 1971-12-07
    • US ARMY
    • DRZEWIECKI T
    • F15C1/08F15C1/04
    • F15C1/08Y10T137/2256Y10T137/2262
    • A novel construction of a fluidic switching device is disclosed, the construction effecting high speed decoupled operation. In the preferred inventive embodiment, the novel construction comprises a modification of a conventional fluidic switching device of the type including an input nozzle, a wall-attachment interaction chamber, and a plurality of output receiver lines, wherein a splitter of rounded convex shape is disposed downstream in the interaction chamber between the plurality of output receiver lines, wherein constrictions are provided to either side of the splitter between the interaction chamber and each respective output receiver line, wherein vent channel means are disposed behind and downstream of the splitter and the constrictions communicating with each output receiver line and coupling each output receiver line to a common vent, and wherein additional decoupling vents are disposed downstream of the constrictions in each output receiver line. This novel construction has the effect of eliminating the receiver line and downstream impedance to switching and specifically removes the vortex in the attachment region and the receiver line inductance.
    • 公开了流体开关装置的新颖结构,该结构实现了高速解耦操作。 在优选的本发明实施例中,新颖的结构包括常规的流体开关装置的改型,其包括输入喷嘴,壁附着相互作用室和多个输出接收器线,其中设置有圆形凸形的分流器 在多个输出接收器线之间的相互作用室中的下游,其中收缩被提供到分离器的相互作用室和每个相应的输出接收器线之间的任一侧,其中通气通道装置设置在分离器的后面和下游, 每个输出接收器线路和每个输出接收器线路耦合到公共通气口,并且其中额外的去耦通气口设置在每个输出接收器线路中的收缩部的下游。 这种新颖的结构具有消除接收器线路和下游阻抗切换的作用,并具体消除了附着区域中的涡流和接收器线路电感。