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    • 8. 发明授权
    • Microwave highway paint drying apparatus
    • 微波高速公路漆干燥设备
    • US4765773A
    • 1988-08-23
    • US020109
    • 1987-02-27
    • Harry C. Hopkins
    • Harry C. Hopkins
    • E01C23/08E01C23/14E01C23/22F26B3/347F26B19/00E01C23/16
    • E01C23/081E01C23/14E01C23/22F26B19/00F26B3/347
    • A mobile paint application and microwave drying apparatus has a downwardly open hollow frame forming a microwave cavity movable over a surface on rollers. The interior cavity of the frame is coated with microwave absorbent material, as are the rollers. The frame in the front and rear conforms to the rollers with a certain gap and ends above the surface at a certain distance. Treads extend between the front and rear rollers on each side and have a thickness which is greater than the gap and distance so as to create a circuitous path from the cavity which blocks microwave radiation. A paint spray nozzle is located in the cavity and applies paint to the surface. This paint is rapidly dried by a microwave generator which is positioned in the cavity and directs radiation onto the wet paint.
    • 移动涂料应用和微波干燥装置具有向下开口的中空框架,其形成可在辊子上的表面上移动的微波空腔。 框架的内部空腔与滚筒一样涂覆有微波吸收材料。 前后框架以一定的间隙与滚子一致,并以一定距离在表面上方终止。 胎面在每侧的前辊和后辊之间延伸并且具有大于间隙和距离的厚度,以便产生阻挡微波辐射的空腔的迂回路径。 油漆喷嘴位于空腔中,并将表面涂上油漆。 这种涂料被微波发生器快速干燥,微波发生器定位在空腔中并将辐射引导到湿漆上。
    • 9. 发明授权
    • Power controller
    • 电源控制器
    • US4704570A
    • 1987-11-03
    • US869172
    • 1986-05-30
    • Harry C. Hopkins
    • Harry C. Hopkins
    • H02J3/18H02P23/00H02P5/40
    • H02J3/1892H02P23/26
    • A motor drive circuit controlling the period of each cycle of line voltage which is supplied through an electronic switch to a motor winding. The phase difference between the current through and the voltage across the winding is measured and compared to a reference. The duration of the period of a cycle when the switch is closed and supplies power to the motor winding is varied in relation to the phase comparison so as to maintain an optimal phase angle or power factor for the motor. To eliminate misfiring of the switches in a single phase unit, an a.c. coupled power supply is used to power the control circuits and a varistor is located across the line. Also, fuses are used to protect the circuitry. In a three phase circuit, resistive dividers in current and voltage sensing circuits are matched within 1% of each other to provide proper triggering of the switches of each phase with respect to each other.
    • 电动机驱动电路,其控制通过电子开关供给到电动机绕组的线路电压的每个周期的周期。 测量绕组上的电流和电压之间的相位差,并将其与参考值进行比较。 开关闭合并向电动机绕组供电的周期的持续时间相对于相位比较而变化,以保持电动机的最佳相位角或功率因数。 为了消除单相单元中开关的失火, 耦合电源用于为控制电路供电,并且变阻器位于整个线路上。 此外,保险丝用于保护电路。 在三相电路中,电流和电压感测电路中的电阻分压器在彼此的1%之间匹配,以提供每个相位的开关相对于彼此的适当触发。