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    • 9. 发明授权
    • Control system for a HVDC power supply
    • HVDC电源控制系统
    • US6144570A
    • 2000-11-07
    • US338206
    • 1999-06-22
    • Daniel C. Hughey
    • Daniel C. Hughey
    • B05B5/10H02M1/00H02M3/07H02M3/28H02M7/10H02M7/538
    • B05B5/10H02M3/07H02M3/28H02M7/103H02M1/32H02M1/36
    • A high magnitude potential supply comprises a first circuit (220, 224) for generating a first signal related to an output high magnitude potential (KV) across a pair of output terminals (113 and ground) of the supply, a second circuit (210, 218) for generating a second signal related to a desired output current from the high magnitude potential supply, and a third circuit (Q2B, Q2C, Q7 and associated components) for supplying an operating potential (VCT) to the high magnitude potential supply so that it can produce the high magnitude operating potential. The third circuit has a control terminal (COMP terminal of 86). The supply further comprises a fourth circuit (86) coupled to the first (220, 224) and second (210, 218) circuits and to the control terminal (COMP terminal of 86). The fourth circuit (86) receives the first and second signals from the first (220, 224) and second (210, 218) circuits and controls the operating potential supplied to the high magnitude potential supply by the third circuit (Q2B, Q2C, Q7 and associated components). The supply further comprises a fifth circuit (84, 240, 242, 244) for disabling the supply of operating potential to the high magnitude potential supply so that no high magnitude operating potential can be supplied by it. The fifth circuit (84, 240, 242, 244) is also coupled to the control terminal (COMP terminal of 86).
    • 高电位电源包括用于产生与电源的一对输出端子(113和接地)相关的输出高幅度电位(KV)的第一信号的第一电路(220,224),第二电路(210, 218),用于产生与来自高幅度电位电源的期望输出电流有关的第二信号;以及第三电路(Q2B,Q2C,Q7和相关联的部件),用于向高电位电源提供工作电位(VCT),使得 它可以产生高的运行电位。 第三电路具有控制端(COMP端子86)。 该电源还包括耦合到第一(220,224)和第二(210,218)电路的第四电路(86)和控制端(86的COMP端子)。 第四电路(86)从第一(220,224)和第二(210,218)电路接收第一和第二信号,并且控制由第三电路(Q2B,Q2C,Q7)提供给高电平电位的工作电位 和相关组件)。 该电源还包括用于禁止向高电位电源供应工作电位的第五电路(84,240,242,244),使得它们不能提供高的幅度工作电位。 第五电路(84,240,242,244)也耦合到控制端子(COMP端子86)。
    • 10. 发明授权
    • Electrostatic spray module
    • 静电喷雾模块
    • US6138922A
    • 2000-10-31
    • US437083
    • 1999-11-09
    • William J. HartmanRobert G. White
    • William J. HartmanRobert G. White
    • B05B5/03B05B5/10B05B7/04B05B7/08A01G23/10
    • B05B5/10B05B5/03B05B7/045B05B7/0884
    • An electrostatic spray module for applying agricultural liquids such as a pesticide to crops where, externally to the spray module the number of connections is reduced to three, one for the liquid pesticide, one for compressed air and one for a low voltage signal. Internally to the spray module, the low voltage is converted to a high voltage signal, which is, along with the pesticide and the compressed air delivered to one or more electrostatic spray nozzles using only two electrically conductive pipes, a gas delivery pipe and a liquid delivery pipe. The nozzles fit into the gas delivery pipe and draw the compressed air through gas channel openings in the side of the nozzles. The gas delivery pipe doubles as the means to delivery the high voltage signal to the nozzles. Each nozzle has a liquid feed from the liquid delivery pipe, which carries ground voltage, maintaining the liquid at ground voltage. The grounded liquid merges with the compressed air in the nozzles to form an atomized liquid. The atomized liquid then passes through an electrode, which is electrically charged by the high voltage signal to form an electrostatic spray. The electrical charge in the spray leads to better dispersal of the spray due to the droplets in the spray repelling from each other, and further improves the adherence of the spray to crops which attract the charged droplets.
    • 一种静电喷雾模块,用于将诸如农药的农用液体施加到作物上,在喷雾模块的外部,连接数量减少到三个,一个用于液体农药,一个用于压缩空气,另一个用于低电压信号。 在喷雾模块的内部,低电压被转换成高电压信号,其与农药和压缩空气一起输送到一个或多个静电喷嘴,仅使用两个导电管,气体输送管和液体 输送管。 喷嘴装配到气体输送管中并且通过喷嘴侧的气体通道开口抽吸压缩空气。 气体输送管道同时作为将高电压信号传送到喷嘴的手段。 每个喷嘴具有来自液体输送管的液体进料,其输送地电压,将液体保持在接地电压。 接地的液体与喷嘴中的压缩空气合并形成雾化液体。 雾化液体然后通过电极,该电极由高电压信号充电以形成静电喷雾。 喷雾中的电荷导致由于喷雾排斥中的液滴而使喷雾更好地分散,并且进一步改善喷雾对吸引带电液滴的作物的粘附性。