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    • 1. 发明授权
    • Arc welder
    • 弧焊机
    • US5760372A
    • 1998-06-02
    • US669993
    • 1996-06-21
    • Kunio KarinoHaruo MoriguchiShigeru OkamotoKenzo DanjoAtushi KinoshitaToshikazu Fujiyoshi
    • Kunio KarinoHaruo MoriguchiShigeru OkamotoKenzo DanjoAtushi KinoshitaToshikazu Fujiyoshi
    • B23K9/067B23K9/073B23K9/095B23K9/06
    • B23K9/0956
    • An arc welder includes an inverter for converting a DC voltage to a RF voltage which, then, is rectified by a rectifier. The output of the rectifier is smoothed by a DC reactor. A RF generator provides RF current to flow between a workpiece and a main electrode of the welder forming a welder load, which initiates arcing between the workpiece and the main electrode. Initiation of arcing causes output current from the DC reactor to be supplied to the welder load, so that steady-state arcing is established. The DC reactor has a relatively small inductance which permit the output current from the DC reactor to reach a value required for establishing the steady-state arcing within a time period during which the RF generator provides RF current. The RF voltage from the inverter has a relatively high frequency so that the output current from the DC reactor can sustain the steady-state arcing.
    • 电弧焊机包括用于将DC电压转换成RF电压的逆变器,然后由整流器整流。 整流器的输出由直流电抗器平滑。 RF发生器提供RF电流以在焊接工件的工件和主电极之间流动,形成焊接负载,其启动工件和主电极之间的电弧。 引起电弧会使直流电抗器的输出电流提供给焊机负载,从而建立稳态电弧。 DC电抗器具有相对小的电感,其允许来自DC电抗器的输出电流达到在RF发生器提供RF电流的时间段内建立稳态电弧所需的值。 来自逆变器的RF电压具有相对高的频率,使得来自DC电抗器的输出电流可以维持稳态电弧。
    • 2. 发明授权
    • AC-DC converter apparatus
    • AC-DC转换器装置
    • US5771163A
    • 1998-06-23
    • US752302
    • 1996-11-19
    • Haruo MoriguchiKenzo DanjoShigeru OkamotoTakashi HashimotoKunio Karino
    • Haruo MoriguchiKenzo DanjoShigeru OkamotoTakashi HashimotoKunio Karino
    • H02M3/28H02M3/335H02M7/00H02M3/24
    • H02M3/285H02M3/33569H02M2001/0074
    • A DC power supply apparatus includes a rectifier circuit for rectifying an input AC voltage to develop a rectified voltage between two output terminals thereof. First and second smoothing capacitors are connected in series between the output terminals of the rectifier circuit. First and second voltages developed across the first and second capacitors are applied to first and second inverters which convert the applied voltages to high-frequency voltages, which, in turn, are applied to a transformer. The transformer develops a transformed high-frequency voltage which is converted to a DC voltage by a converter. A voltage detector detects the first and second voltages, and the detected first and second voltages are compared in a microprocessor. An inverter control circuit controls the first and second inverters in accordance with the result of comparison, in a sense to make the voltages across the first and second smoothing capacitors equal.
    • 直流电源装置包括整流电路,用于整流输入AC电压,以在其两个输出端之间产生整流电压。 第一和第二平滑电容器串联连接在整流电路的输出端子之间。 跨越第一和第二电容器产生的第一和第二电压被施加到第一和第二逆变器,其将所施加的电压转换成高频电压,其又被施加到变压器。 变压器开发出转换后的高频电压,通过转换器转换为直流电压。 电压检测器检测第一和第二电压,并且在微处理器中比较所检测到的第一和第二电压。 在使得第一和第二平滑电容器两端的电压相等的意义上,逆变器控制电路根据比较结果来控制第一和第二逆变器。
    • 3. 发明授权
    • Consumable electrode DC arc welder
    • 消弧电极直流电弧焊机
    • US5942139A
    • 1999-08-24
    • US009613
    • 1998-01-20
    • Haruo MoriguchiKenzo DanjoShigeru OkamotoAtsushi Kinoshita
    • Haruo MoriguchiKenzo DanjoShigeru OkamotoAtsushi Kinoshita
    • B23K9/173B23K9/073B23K9/095B23K9/10H02M9/00
    • B23K9/1043B23K9/0956
    • DC power from a smoothing capacitor is converted into high frequency power by an inverter, and then lowered by an output transformer. The lowered high frequency power is converted into DC power by an output rectifier and a DC reactor, and then supplied to a load. The load is short-circuited and then opened to initiate arcing. The short-circuiting and the arcing alternate. An auxiliary rectifier provides a load-voltage representative signal, and a current detector detects a load current. A load-current representative signal is differentiated by a differentiation circuit. The signals from the auxiliary rectifier, the current detector and the differentiation circuit, and a reference signal are applied to an operational amplifier. A control circuit controls the inverter such that the output of the operational amplifier can be zero. An integration circuit receives at least the load-voltage representative signal to detect a period of a cycle consisting of the arcing and the short-circuiting and provide an operation-cycle-period representative signal to the operational amplifier.
    • 来自平滑电容器的直流电力由逆变器转换为高频功率,然后由输出变压器降低。 降低的高频功率由输出整流器和直流电抗器转换为直流电力,然后提供给负载。 负载短路,然后打开以启动电弧。 短路和电弧交替。 辅助整流器提供负载电压代表信号,电流检测器检测负载电流。 负载电流代表信号由微分电路区分。 来自辅助整流器,电流检测器和微分电路的信号以及参考信号被施加到运算放大器。 控制电路控制逆变器,使得运算放大器的输出可以为零。 积分电路至少接收负载电压代表信号,以检测由电弧和短路组成的周期的周期,并向运算放大器提供操作周期代表信号。
    • 4. 发明授权
    • Power supply apparatus with initial arcing sustaining circuit
    • 具有初始电弧持续电路的电源装置
    • US5877952A
    • 1999-03-02
    • US954816
    • 1997-10-21
    • Haruo MoriguchiKenzo DanjoShigeru OkamotoAtsushi KinoshitaTakashi Hashimoto
    • Haruo MoriguchiKenzo DanjoShigeru OkamotoAtsushi KinoshitaTakashi Hashimoto
    • B23K9/067B23K9/073H02M3/28H02M9/00H02M7/00
    • B23K9/0678
    • Power supply apparatus includes a converter which converts a commercial AC voltage into a DC voltage. An inverter converts the DC voltage into a high frequency voltage. The high frequency voltage is voltage-transformed by a transformer, and then rectified and smoothed by a rectifier and a smoothing reactor into a DC voltage. This DC voltage is applied between a workpiece and a torch. A high frequency voltage generator generates a high frequency voltage and applies it to a primary winding of a coupling transformer. A boosted high frequency voltage is induced in a first secondary winding and applied between the workpiece and the torch, so that arcing is initiated. The coupling transformer includes a second secondary winding in which another high frequency voltage is induced. The high frequency voltage induced in the second secondary winding is converted into a DC voltage by a diode and a smoothing capacitor for application between the workpiece and the torch, so that the arcing is sustained.
    • 电源装置包括将商用AC电压转换成DC电压的转换器。 逆变器将直流电压转换成高频电压。 高频电压由变压器进行电压转换,然后由整流器和平滑电抗器整流并平滑成直流电压。 该直流电压施加在工件和割炬之间。 高频电压发生器产生高频电压并将其施加到耦合变压器的初级绕组。 在第一次级绕组中感应出升高的高频电压,并施加在工件和割炬之间,从而启动电弧。 耦合变压器包括其中引入另一高频电压的第二次级绕组。 在第二次级绕组中感应的高频电压通过二极管和平滑电容器转换成直流电压,用于工件和焊炬之间的应用,从而保持电弧。
    • 5. 发明授权
    • Power supply apparatus for arc-utilizing equipment
    • 电弧利用设备的电源装置
    • US5751568A
    • 1998-05-12
    • US758691
    • 1996-12-03
    • Kenzo DanjoAtsushi KinoshitaShigeru OkamotoHaruo MoriguchiTakashi Hashimoto
    • Kenzo DanjoAtsushi KinoshitaShigeru OkamotoHaruo MoriguchiTakashi Hashimoto
    • B23K9/10H02M7/48H02M3/335H23K9/095
    • B23K9/1056H02M7/48
    • A power supply apparatus for arc-utilizing equipment includes a first converter for converting a received AC voltage to a DC voltage. An inverter converts the DC voltage to a high-frequency voltage, which is applied to a voltage-transformer with primary and second windings. A voltage-transformed high-frequency voltage induced in the secondary winding is converted to a DC voltage in a second converter, which is developed between two output terminals. The respective ones of the two output terminals are connected to a torch electrode of the arc-utilizing equipment and a workpiece. A bypass capacitor and a high-frequency voltage generator circuit are serially connected between the two output terminals. A control circuit controls the high-frequency voltage generator circuit and the inverter circuit. The bypass capacitor is connected directly between one of the two output terminals and the high-frequency voltage generator circuit.
    • 用于电弧利用设备的电源装置包括用于将接收的AC电压转换为DC电压的第一转换器。 逆变器将直流电压转换为施加到具有初级和第二绕组的电压互感器的高频电压。 在次级绕组中感应的电压变换的高频电压被转换成在两个输出端之间产生的第二转换器中的直流电压。 两个输出端子中的相应的端子连接到电弧利用设备的炬电极和工件。 旁路电容器和高频电压发生器电路串联连接在两个输出端子之间。 控制电路控制高频电压发生器电路和逆变器电路。 旁路电容器直接连接在两个输出端子之一和高频电压发生器电路之间。
    • 7. 发明授权
    • Power supply apparatus
    • 电源设备
    • US5831240A
    • 1998-11-03
    • US554529
    • 1995-11-07
    • Masao KatookaToru AraiShigeru OkamotoKenzo DanjoMasaharu Tanaka
    • Masao KatookaToru AraiShigeru OkamotoKenzo DanjoMasaharu Tanaka
    • B23K9/32B23K9/10
    • B23K9/323
    • A power supply apparatus includes first and second spaced-apart, substantially parallel panels, and a chassis disposed in substantially perpendicular to and between the first and second panels. Opposite edges of the chassis are coupled to the respective ones of the first and second panels to thereby partition the space between the first and second panels into upper and lower regions. A power supply circuit includes heat-generating electric components disposed in the lower region, and non-heat-generating components disposed in the upper region. The chassis has an opening therein and a heat sink is mounted to close the opening in the chassis. A semiconductor module of the power supply circuit is mounted on the surface facing to the upper region of the heat sink.
    • 电源装置包括第一和第二间隔开的基本上平行的面板,以及基本上垂直于第一和第二面板之间且在其之间设置的底架。 底盘的相对边缘联接到第一和第二面板中的相应边缘,从而将第一和第二面板之间的空间分隔成上部和下部区域。 电源电路包括设置在下部区域中的发热电气部件和设置在上部区域中的非发热部件。 底盘在其中具有开口,并且安装散热器以关闭底盘中的开口。 电源电路的半导体模块安装在面向散热器上部区域的表面上。