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    • 1. 发明授权
    • Battery charger/pre-exciter for engine-driven generator
    • 用于发动机驱动发电机的电池充电器/预励磁机
    • US5537025A
    • 1996-07-16
    • US108992
    • 1993-08-18
    • Robert D. KernGerald C. RuehlowGraham W. McLeanFrank Wedel
    • Robert D. KernGerald C. RuehlowGraham W. McLeanFrank Wedel
    • H02P9/08H02P9/30H02P9/14
    • H02P9/08H02P9/30
    • An engine-driven generator having a battery powered starter motor includes a permanent magnet battery charger/pre-exciter for charging the starting battery and for exciting the main alternator field winding of an AC synchronous alternator included in the engine-driven generator. A first winding in the permanent magnet battery charger/pre-exciter provides power to a first voltage regulator that, in turn, maintains a desired load voltage substantially independently of alternator loading. A second winding within the permanent magnet battery charger/pre-exciter supplies power to a second voltage regulator that maintains a desired battery charging voltage substantially independently of the alternator loading. Use of the permanent magnet battery charger/pre-exciter maintains a desired battery charge current and a desired main alternator field excitation substantially independently of the load current supplied by the alternator.
    • 具有电池供电的起动电动机的发动机驱动的发电机包括用于对起动电池进行充电并激励包括在发动机驱动的发电机中的交流同步交流发电机的主交流发电机励磁绕组的永磁体电池充电器/预励磁器。 永磁体电池充电器/预激励器中的第一绕组为第一电压调节器提供电力,而第一电压调节器依次维持基本上与交流发电机负载无关的所需负载电压。 永磁体电池充电器/预激励器内的第二绕组向第二电压调节器供电,该第二电压调节器基本上独立于交流发电机负载保持期望的电池充电电压。 永磁电池充电器/预励磁器的使用保持了所需的电池充电电流和基本上独立于交流发电机提供的负载电流的期望的主交流发电机励磁励磁。
    • 2. 发明授权
    • Arc welder and method providing use-enhancing features
    • 电弧焊机和方法提供使用增强功能
    • US5861604A
    • 1999-01-19
    • US822009
    • 1997-03-24
    • Graham W. McLeanJeffery J. JonasRobert D. KernGerald C. RuehlowFrancis X. Wedel
    • Graham W. McLeanJeffery J. JonasRobert D. KernGerald C. RuehlowFrancis X. Wedel
    • B23K9/067B23K9/10F02B63/04H02K21/48
    • H02K21/48B23K9/0671B23K9/1006F02B63/04
    • A "hot start" method for arc welding includes selecting a first weld current, setting a time interval, striking an arc, flowing a second, higher weld current through the welding rod and then, after a brief time interval, reducing the current through the rod to the value of the first weld current. Also disclosed is a new arc welder stator having two groups of slots around a core. The group of larger slots contains the weld current windings and slots in the group of smaller slots contain windings for timing, gate voltage, battery charging, auxiliary power and the like. A new cooling apparatus for an arc welder has an air duct and a "double-bladed" fan for flowing air along several paths and cooling both the welder control section and the generating section. A new method for electronically controlling engine speed in an engine-driven arc welder is also disclosed. Such method includes manipulating a current-selecting device, contacting a work piece with a welding rod, accelerating the engine to an elevated speed and then either maintaining such speed or reducing it, depending upon the value of weld current selected.
    • 电弧焊的“热启动”方法包括选择第一焊接电流,设定时间间隔,打弧,使第二较高焊接电流流过焊条,然后在短时间间隔之后,减少通过 杆到第一焊接电流的值。 还公开了一种新的电弧焊机定子,其具有围绕芯的两组槽。 较大槽的组包含焊接电流绕组,并且在较小槽的组中的槽包含用于定时,栅极电压,电池充电,辅助功率等的绕组。 一种用于电弧焊机的新的冷却装置具有一个风道和一个“双叶片”风扇,用于沿着几条路径流动空气,同时冷却焊机控制部分和生成部分。 还公开了一种用于在发动机驱动的电弧焊机中电子控制发动机转速的新方法。 这种方法包括操纵电流选择装置,使工件与焊条接触,根据所选择的焊接电流的值,将发动机加速到高速,然后保持这种速度或减小。
    • 9. 发明授权
    • Air flow arrangement for generator enclosure
    • 发电机外壳的气流布置
    • US06630756B2
    • 2003-10-07
    • US09904265
    • 2001-07-12
    • Robert D. KernPeter WinnieGerald C. RuehlowBret BairdAllen GillettePatrick ForsytheRodney Nicosen
    • Robert D. KernPeter WinnieGerald C. RuehlowBret BairdAllen GillettePatrick ForsytheRodney Nicosen
    • H02K900
    • F02B63/04F01P5/02F01P11/12F01P2060/16
    • A generator structure is provided having an improved air flow arrangement. The generator structure includes an enclosure having an interior for receiving an engine and an alternator therein. A roof structure is positioned on the enclosure and includes an eave portion and an attic portion. The eave portion has an inlet which communicates with the ambient air external of the generator structure, an outlet communicating with the interior of the enclosure and input flow path therebetween. The attic portion has an inlet communicating with the interior of the enclosure, an outlet communicating with the ambient air external of the generator structure and an exit flow path therebetween. An air flow generator draws ambient air through the inlet flow path in the eave portion of the roof structure into the interior of the enclosure to cool the engine and the alternator and urges air from the interior of the enclosure through the exit flow path in the attic portion and out of the generator structure.
    • 提供具有改进的气流布置的发电机结构。 发电机结构包括具有用于在其内接收发动机和交流发电机的内部的外壳。 屋顶结构定位在外壳上并且包括檐部和阁楼部分。 檐部具有与发生器结构外部的环境空气连通的入口,与外壳内部连通的出口和其间的输入流动路径。 阁楼部分具有与外壳内部连通的入口,与发生器结构外部的环境空气连通的出口以及其间的出口流动路径。 气流发生器将环境空气通过屋顶结构的屋檐部分中的入口流动通道进入外壳的内部,以冷却发动机和交流发电机,并且促使来自外壳内部的空气通过阁楼的出口流动路径 部分和出发生器结构。