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公开(公告)号：US5272314A
公开(公告)日：1993-12-21
申请号：US991436
申请日：1992-12-16
申请人： Haruo Moriguchi , Tetsurou Ikeda , Kenzo Danjo , Masahiro Aoyama , Karino Kunio
发明人： Haruo Moriguchi , Tetsurou Ikeda , Kenzo Danjo , Masahiro Aoyama , Karino Kunio
CPC分类号： G05F1/08 , B23K9/0731 , B23K9/0956
摘要： A consumable electrode type d.c. arc welder including an invertor, which is arranged to rectify an a.c. power from a power supply, once convert a resultant d.c. power into a high frequency a.c. power by the invertor and again rectify it to obtain a d.c. power for welding, and provided with means for detecting a current flowing through its welding load to certainly discriminate shortening and arcing states between a welded base material and a welding electrode rod and controlling the invertor with a resultant discrimination signal to reduce its output voltage during the shortening period, thereby preventing spattering produced by an over-current.
摘要翻译： 消耗电极类型直流 电弧焊机包括一个逆变器，它被安排来纠正一个等 来自电源的电源，一旦转换成一个电源。 电力进入高频率a.c. 权力由逆变器再次纠正以获得直流。 并且具有用于检测流过其焊接负载的电流的装置，以确定地区分焊接的基底材料和焊接电极棒之间的起酥油状态和控制逆变器的结果，从而减小其在 缩短时间，从而防止由过电流产生的飞溅。
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公开(公告)号：US5306894A
公开(公告)日：1994-04-26
申请号：US25775
申请日：1993-03-03
申请人： Haruo Moriguchi , Tetsurou Ikeda , Kenzo Danjo , Toshikazu Fujiyoshi , Masahiro Aoyama , Kunio Karino
发明人： Haruo Moriguchi , Tetsurou Ikeda , Kenzo Danjo , Toshikazu Fujiyoshi , Masahiro Aoyama , Kunio Karino
CPC分类号： B23K9/1056 , G05F1/08
摘要： An invertor controlled D.C. arc welder of consumable electrode type which is arranged to rectify an a.c. power from a commercial power supply, convert it into a high frequency a.c. power by an invertor, rectify it again to obtain a d.c. power output for welding and stabilize the output voltage by feedback control of the invertor based upon the output voltage and provided with means for discriminating shorting and arcing periods of its welding load from the output voltage and additionally controlling the invertor based upon a resultant discrimination signal to raise the output voltage during the early time of the arcing period, thereby preventing defective welding due to insufficient output current. This invention is especially, effective for supplementing such insufficient output current as an aftereffect of insufficient output power during the shortening period in such welder which is provided with means for reducing the output voltage during the shortening period to prevent generation of undesirable spattering.
摘要翻译： 一种易损电极类型的逆变器控制直流电弧焊机，其设置为对一个直流电源进行整流。 从商用电源供电，将其转换成高频率。 权力由逆变器，再次纠正获得一个d.c. 用于焊接的功率输出并且通过基于输出电压的逆变器的反馈控制来稳定输出电压，并且具有用于区分其焊接负载的短路和电弧周期与输出电压的装置，并且基于所得到的鉴别信号来控制逆变器 在电弧期的早期阶段提高输出电压，防止由于输出电流不足导致的焊接不良。 本发明特别有效地补充这种不足的输出电流，作为在这种焊接机的缩短期间输出功率不足的后果，其具有用于在缩短期间减小输出电压的装置，以防止产生不期望的飞溅。
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公开(公告)号：US5310992A
公开(公告)日：1994-05-10
申请号：US42674
申请日：1993-04-05
申请人： Kunio Karino , Haruo Moriguchi , Toshikazu Fujiyoshi , Tetsurou Ikeda , Kenzo Danjo , Masahiro Aoyama
发明人： Kunio Karino , Haruo Moriguchi , Toshikazu Fujiyoshi , Tetsurou Ikeda , Kenzo Danjo , Masahiro Aoyama
CPC分类号： B23K11/241 , B23K9/1056 , H02M3/285 , H02M3/337 , H02M7/48 , H02M2001/0074
摘要： A d.c. arc welder which can use either a high voltage power supply of a certain voltage such as 400 volts or a low voltage power supply of about a half voltage thereof such as 200 volts and is arranged to effect automatic switching between low and high voltage power supply states not only when the power supply is switched from one to the other but also when the input voltage gradually rises from zero voltage to the above-mentioned high voltage, thereby constantly providing an adequate d.c. output for welding. It is provided with a circuit breaker in a stage next to its input terminals for sensing a high voltage of the power supply to temporarily shut off the input from the power supply and closing the circuit after its initialization.
摘要翻译： 一个d.c. 电弧焊机可以使用一定电压的高压电源（例如400伏特）或其一半电压（例如200伏特）的低压电源，并且被布置成在低电压和高压电源状态之间实现自动切换 不仅当电源从一个切换到另一个时，而且当输入电压从零电压逐渐上升到上述高电压时，由此不断地提供足够的直流 焊接输出。 在其输入端子旁边设置有一个断路器，用于感测电源的高电压以暂时关闭电源的输入并在其初始化之后闭合电路。
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公开(公告)号：US5272313A
公开(公告)日：1993-12-21
申请号：US962923
申请日：1992-10-19
申请人： Kunio Karino , Haruo Moriguchi , Toshikazu Fujiyoshi , Tetsurou Ikeda , Kenzo Danjo , Masahiro Aoyama
发明人： Kunio Karino , Haruo Moriguchi , Toshikazu Fujiyoshi , Tetsurou Ikeda , Kenzo Danjo , Masahiro Aoyama
CPC分类号： B23K9/1056 , H02H11/007
摘要： An arc welder which can be used with either a high voltage a.c. power supply of a certain voltage or a low voltage a.c. power supply of about a half of said voltage, such as 400 or 200 volts, for example, and which is provided with a circuit configuration in which an input a.c. voltage is rectified by a rectifier and smoothed by a pair of capacitors and the resultant d c. power is converted by an invertor into a high frequency a.c. power which is reduced in voltage by an output transformer and then rectified again, and arranged to discriminate the input a.c. voltage and switchingly connect these capacitors in series or parallel between both ends of the input rectifier, thereby automatically conforming the circuit to both high and low supply voltages.
摘要翻译： 一台电弧焊机，可以用于高压直流电。 电源一定电压或低电压a.c. 电源约为所述电压的一半，例如400或200伏，并且具有电路配置，其中输入交流电 电压由整流器整流并且被一对电容器平滑，并且得到d c。 电力由逆变器转换成高频率交流电。 功率由输出变压器降低电压，然后再次整流，并且被布置为区分输入交流电。 电压并将这些电容器以串联或并联的方式连接在输入整流器的两端之间，从而将电路自动地符合高电源电压和低电源电压。
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公开(公告)号：US5917711A
公开(公告)日：1999-06-29
申请号：US198420
申请日：1998-11-24
申请人： Kunio Shikata , Haruo Moriguchi , Tetsuro Ikeda , Kenzo Danjo , Takeshi Omura , Hideo Ishii
发明人： Kunio Shikata , Haruo Moriguchi , Tetsuro Ikeda , Kenzo Danjo , Takeshi Omura , Hideo Ishii
CPC分类号： H02M3/33569 , H02M2001/0009
摘要： DC power supply apparatus includes an input-side rectifier for converting an AC signal from an AC power supply into a DC signal. A DC-to-high-frequency converter converts the DC signal into a high frequency signal in response to a control signal from a control unit. An output-side rectifier converts the high frequency signal into a DC signal and applies it to a load. An input current detector detects an input current flowing through the input-side rectifier and generates a signal representative of the input current. A load current detector detects a load current flowing through the load and generates a signal representative of the load current. The control unit receives the input-current and load-current representative signals, a reference input current signal and a reference load current signal, and provides the DC-to-high-frequency converter with the control signal such that the input-current representative signal can be equal to the reference input current signal and the load-current representative signal can be equal to the reference load current signal.
摘要翻译： 直流电源装置包括用于将来自AC电源的AC信号转换为DC信号的输入侧整流器。 DC到高频转换器响应于来自控制单元的控制信号将DC信号转换成高频信号。 输出侧整流器将高频信号转换为直流信号并将其施加到负载。 输入电流检测器检测流过输入侧整流器的输入电流并产生表示输入电流的信号。 负载电流检测器检测流过负载的负载电流并产生代表负载电流的信号。 控制单元接收输入电流和负载电流代表信号，参考输入电流信号和参考负载电流信号，并向DC到高频转换器提供控制信号，使得输入电流代表信号 可以等于参考输入电流信号，负载电流代表信号可以等于参考负载电流信号。
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公开(公告)号：US5942139A
公开(公告)日：1999-08-24
申请号：US009613
申请日：1998-01-20
CPC分类号： B23K9/1043 , B23K9/0956
摘要： 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.
摘要翻译： 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。
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7.发明授权Arc welder with timed control of arcing recovery and means for reducing weight, size, and power loss in the welder 失效具有电弧恢复定时控制的弧焊机，以及减少焊机重量，尺寸和功率损耗的手段
公开(公告)号：US5343017A
公开(公告)日：1994-08-30
申请号：US120049
申请日：1993-09-13
CPC分类号： B23K9/0738 , B23K9/0731 , Y02P70/181
摘要： An arc welder provided with a low frequency square waveform a.c. power supply as a main power supply for welding in order to improve its power of recovering an arc which may go out at the time of polarity transition of a welding load and an auxiliary d.c. power supply for super-posing its output upon the input of the main power supply to further improve the recovering power, in which a switching element is inserted in a supply path of the output of the auxiliary d.c. power supply and the switching element is put in conduction by a suitable control device only for a necessary shortest arc recovery time in order to reduce a power loss due to continuous supply of the auxiliary d.c. output. The welder may include a diode which is put in conduction in response to an excessive transient voltage induced at the input of an invertor of the main power supply at the time of polarity transition of the welding load and, in order to prevent excessive charge of the capacitor in this case, the conduction time of the switching element may be extended to discharge an excess charge through the switching element to the invertor when a voltage across the capacitor exceeds a predetermined value.
摘要翻译： 弧焊机提供低频方波形a.c。 电源作为焊接的主要电源，以提高其恢复在焊接负载和辅助直流极性转变时可能熄灭的电弧的功率。 用于在主电源的输入端超高输出的电源，以进一步提高恢复功率，其中开关元件插入辅助直流输出的供电路径中。 电源和开关元件由合适的控制装置导通，只需要最短的电弧恢复时间，以减少由于辅助直流电的连续供电导致的功率损耗。 输出。 焊机可以包括二极管，其响应于在焊接负载的极性转变时在主电源的逆变器的输入处感应到的过大的瞬态电压而被导通，并且为了防止 电容器在这种情况下，当电容器两端的电压超过预定值时，开关元件的导通时间可以延长以通过开关元件将过量的电荷放电到逆变器。
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公开(公告)号：US5771163A
公开(公告)日：1998-06-23
申请号：US752302
申请日：1996-11-19
CPC分类号： H02M3/285 , H02M3/33569 , H02M2001/0074
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5760372A
公开(公告)日：1998-06-02
申请号：US669993
申请日：1996-06-21
申请人： Kunio Karino , Haruo Moriguchi , Shigeru Okamoto , Kenzo Danjo , Atushi Kinoshita , Toshikazu Fujiyoshi
发明人： Kunio Karino , Haruo Moriguchi , Shigeru Okamoto , Kenzo Danjo , Atushi Kinoshita , Toshikazu Fujiyoshi
CPC分类号： B23K9/0956
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US5457300A
公开(公告)日：1995-10-10
申请号：US285002
申请日：1994-08-02
CPC分类号： B23K9/0956
摘要： An inverter controlled DC arc welder of consumable electrode type includes an input rectifier for rectifying AC input power, an inverter for converting the rectifier output to high frequency AC power, an output transformer for stepping down the inverter output voltage, and an output rectifier for rectifying the transformer output voltage to provide a DC output voltage to be applied to a welder load. The welder further includes means for detecting current flowing through the welder load to produce a detection signal, a differentiator circuit for differentiating the detection signal, and correction means for correcting a predetermined reference voltage in accordance with the differentiator output voltage. Feedback control means controls the inverter in accordance with the difference between the transformer output and the corrected reference voltage.
摘要翻译： 一种易损电极类型的逆变器控制直流电弧焊机，包括用于整流交流输入电源的输入整流器，用于将整流器输出转换为高频交流电的逆变器，用于降低逆变器输出电压的输出变压器，以及用于整流的输出整流器 变压器输出电压提供要施加到焊机负载的直流输出电压。 焊机还包括用于检测流过焊机负载的电流以产生检测信号的装置，用于区分检测信号的微分电路和用于根据微分器输出电压校正预定参考电压的校正装置。 反馈控制装置根据变压器输出与校正参考电压之间的差异来控制变频器。
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