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1.发明授权Circuitry and method for maintaining a plasma arc during operation of a plasma arc torch system 失效在等离子弧焊炬系统的操作期间维持等离子体电弧的电路和方法
公开(公告)号：US5620617A
公开(公告)日：1997-04-15
申请号：US544987
申请日：1995-10-30
摘要： An arc control circuit in a plasma arc torch, having an electrode and a nozzle, maintains a plasma arc during operation of the torch. The circuit includes a power supply electrically coupled to the electrode, nozzle and a workpiece. A logic device opens a power switch electrically coupling the nozzle to the power supply, disconnecting the nozzle from the supply, when a transferred arc is formed between the electrode and the workpiece. An amplifier is electrically connected to the power supply. The amplifier compares a sensed current to an operating current. The amplifier increases the output voltage of a power supply to maintain the operating current in coordination with an increasing distance between the workpiece and the torch. A comparator is electrically connected to a logic device and compares the output voltage of the power supply to a maximum voltage. When the output voltage of the power supply exceeds the maximum voltage, the comparator sets the logic device. The logic device generates an output signal to close the power switch and reconnect the nozzle to the power supply, thereby initiating switching of the arc from the workpiece to the nozzle.
摘要翻译： 具有电极和喷嘴的等离子弧焊炬中的电弧控制电路在割炬操作期间保持等离子弧。 电路包括电耦合到电极，喷嘴和工件的电源。 当在电极和工件之间形成转移的电弧时，逻辑设备打开将喷嘴电连接到电源，将喷嘴与电源断开的电源开关。 放大器电连接到电源。 放大器将检测到的电流与工作电流进行比较。 放大器增加电源的输出电压，以保持工作电流与工件和割炬之间的距离增加配合。 比较器电连接到逻辑器件，并将电源的输出电压与最大电压进行比较。 当电源的输出电压超过最大电压时，比较器设置逻辑器件。 逻辑器件产生一个输出信号，以关闭电源开关并将喷嘴重新连接到电源，从而启动电弧从工件到喷嘴的切换。
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公开(公告)号：US20080061046A1
公开(公告)日：2008-03-13
申请号：US11614495
申请日：2006-12-21
IPC分类号： B23K9/10
CPC分类号： B23K9/32
摘要： An improved cooling system for a power supply of a welding or plasma cutting system. The cooling systems includes a heat sink with a panel forming a plurality of enclosed channels. The cooling system also includes a passage defined by walls, and a passage in a heat sink between an inlet port and outlet port. The channels and passages extend from a central portion of the power supply to an end, and a majority of the airflow passing through the power supply is directed through the channels and passages. The method includes step of directing a majority of the airflow through the cooling system via the channels or passages.
摘要翻译： 用于焊接或等离子切割系统的电源的改进的冷却系统。 冷却系统包括散热器，其具有形成多个封闭通道的面板。 冷却系统还包括由壁限定的通道和在入口和出口之间的散热器中的通道。 通道和通道从电源的中心部分延伸到端部，并且通过电源的大部分气流被引导通过通道和通道。 该方法包括通过通道或通道将大部分气流引导通过冷却系统的步骤。
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公开(公告)号：US4558275A
公开(公告)日：1985-12-10
申请号：US256239
申请日：1981-04-21
IPC分类号： G01R13/06 , G01R19/04 , G01R19/165
CPC分类号： G01R13/06 , G01R19/04 , G01R19/16528
摘要： The Detector Module derives a synchronization signal from the half-wave crossovers of the AC power line. A half-wave peak detector detects the peak voltage of each half wave. An impulse detector detects the voltage of any impulses occurring during a half-wave. A common mode detector detects the peak value of each half-wave across the common mode terminals. A microcomputer is provided together with a clock/calendar for recording threshold values and for each half-cycle if a SAG or SURGE is detected; the time that the SAG or SURGE was initiated; the voltage of the half cycle of greatest SAG or SURGE during the event and the number of cycles is recorded. For LO and HI AVERAGE an average resistor stores the average of the peak values for each of the last thirty-two half cycles and that average is compared with the threshold to determine if an event has occurred. If an event has occurred, the duration and the lowest average occurring during the event is stored. The time an impulse occurs is recorded to the nearest second along with the voltage of the peak impulse during the half cycle of the event is stored. For COMMON mode the value of the worst half cycle occurring during any event is recorded along with the number of cycles during which the COMMON mode occurs. BLACKOUT time OFF and time ON are recorded.
摘要翻译： 检测器模块从交流电源线的半波分频得到同步信号。 半波峰值检测器检测每个半波的峰值电压。 脉冲检测器检测在半波期间发生的任何脉冲的电压。 共模检测器检测跨越共模端子的每个半波的峰值。 提供微计算机与时钟/日历一起用于记录阈值，并且如果检测到SAG或SURGE，则每个半周期; SAG或SURGE发起的时间; 记录事件期间最大SAG或SURGE的半周期电压和周期数。 对于LO和HI AVERAGE，平均电阻存储过去三十二个半周期中的每一个的峰值的平均值，并将平均值与阈值进行比较，以确定事件是否发生。 如果发生事件，则存储事件期间发生的持续时间和最低平均值。 脉冲发生的时间被记录到最接近的秒，同时存储事件半周期期间的峰值脉冲的电压。 对于COMMON模式，在任何事件期间发生的最差半周期的值与公共模式发生的周期数一起记录。 BLACKOUT时间OFF和时间ON被记录。
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公开(公告)号：US20080061048A1
公开(公告)日：2008-03-13
申请号：US11614543
申请日：2006-12-21
IPC分类号： B23K9/10
摘要： An improved system for cooling a power supply of a welding or plasma cutting system, and an improved configuration of a power supply. The system cools achieves the improvement in configuration and cooling by mounting electrical components to a circuit board and then to a heat sink. Electrical components are also mounted to a common panel that improves the circulation of air. A central panel supporting the power supply heat sink and components allows a smaller and more compact design while maintaining proper temperatures. Electromagnet cooling is improved by modifying electromagnetic cores to conduct heat to the heat sink, and by the use of thermally conducting polymers.
摘要翻译： 用于冷却焊接或等离子切割系统的电源的改进的系统以及电源的改进的配置。 系统冷却通过将电气部件安装到电路板然后到散热器来实现配置和冷却的改进。 电气部件也安装在公共面板上，改善了空气的循环。 支持电源散热器和组件的中央面板允许更小更紧凑的设计，同时保持适当的温度。 通过改变电磁铁芯以将热量传导到散热器，并通过使用导热聚合物来改善电磁体冷却。
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公开(公告)号：US20080061047A1
公开(公告)日：2008-03-13
申请号：US11614523
申请日：2006-12-21
IPC分类号： B23K9/10
CPC分类号： B23K37/003 , B23K9/1006 , B23K9/32
摘要： An improved cooling system for a power supply of a welding or plasma cutting system. The cooling systems includes sections that are divided. One section contains electrical components and remains relatively clean, and does not receive an airflow from a fan. Another section does not contain electrical components and channels a majority of the airflow into and out of the power supply. The section channeling the majority of the airflow shields the section with the electrical components from a majority of the airflow. The method includes step of forming and disposing the structure of the cooling system.
摘要翻译： 用于焊接或等离子切割系统的电源的改进的冷却系统。 冷却系统包括分割的部分。 一部分包含电气部件，并保持相对干净，不会受到风扇的气流。 另一部分不包含电气部件，并且将大部分气流通入和流出电源。 引导大部分气流的部分将电气部件与大部分气流屏蔽。 该方法包括形成和布置冷却系统的结构的步骤。
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公开(公告)号：US6133543A
公开(公告)日：2000-10-17
申请号：US187274
申请日：1998-11-06
申请人： Dennis M. Borowy , Jon W. Lindsay , Tianting Ren
发明人： Dennis M. Borowy , Jon W. Lindsay , Tianting Ren
CPC分类号： H05H1/36
摘要： A system for controlling a plasma arc torch circuit uses two different current thresholds to control pilot current, thereby reducing nozzle wear while maintaining a reliable arc and an adequate transfer height. Specifically, by using a Hall effect current sensor to monitor low levels of current in the lead that normally carries high current, it is possible to determine more accurately (1) when there is a low level of pilot arc current that can be ramped to a higher level, and (2) when the level of transferred current is capable of reliably sustaining a transferred arc such that the pilot arc can be extinguished. Thus, the current can be removed from the nozzle, at the precise moment in time that the torch can reliably sustain the transferred arc, thereby saving wear on the nozzle. In addition, the system of the present invention can save nozzle wear when used in combination with circuits that compensate for discontinuities in the workpiece by decreasing the current to the workpiece to a pilot arc level. Applicants have found the invention to be particularly advantageous when employed in a hand-held plasma arc torch system.
摘要翻译： 用于控制等离子弧焊炬电路的系统使用两个不同的电流阈值来控制引导电流，从而减少喷嘴磨损，同时保持可靠的电弧和足够的传输高度。 具体来说，通过使用霍尔效应电流传感器来监视通常承载高电流的引线中的低电平电流，可以更准确地确定（1）当存在可以斜坡转换为低电平的导通电弧电流的低电平时 （2）当转移电流的电平能够可靠地维持转移的电弧，使得导电电弧可以熄灭。 因此，可以在割炬可以可靠地维持转印电弧的精确时刻从喷嘴移除电流，从而节省喷嘴上的磨损。 此外，本发明的系统与通过将工件的电流降低到导频电弧水平补偿工件不连续性的电路结合使用可以节省喷嘴磨损。 申请人已经发现本发明在用于手持式等离子弧焊炬系统时是特别有利的。
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公开(公告)号：US07800901B2
公开(公告)日：2010-09-21
申请号：US11614543
申请日：2006-12-21
IPC分类号： H05K7/20
摘要： An improved system for cooling a power supply of a welding or plasma cutting system, and an improved configuration of a power supply. The system cools achieves the improvement in configuration and cooling by mounting electrical components to a circuit board and then to a heat sink. Electrical components are also mounted to a common panel that improves the circulation of air. A central panel supporting the power supply heat sink and components allows a smaller and more compact design while maintaining proper temperatures. Electromagnet cooling is improved by modifying electromagnetic cores to conduct heat to the heat sink, and by the use of thermally conducting polymers.
摘要翻译： 用于冷却焊接或等离子切割系统的电源的改进的系统以及电源的改进的配置。 系统冷却通过将电气部件安装到电路板然后到散热器来实现配置和冷却的改进。 电气部件也安装在公共面板上，改善了空气的循环。 支持电源散热器和组件的中央面板允许更小更紧凑的设计，同时保持适当的温度。 通过改变电磁铁芯以将热量传导到散热器，并通过使用导热聚合物来改善电磁体冷却。
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公开(公告)号：US20090212027A1
公开(公告)日：2009-08-27
申请号：US12035125
申请日：2008-02-21
申请人： Dennis M. Borowy , Jesse A. Roberts
发明人： Dennis M. Borowy , Jesse A. Roberts
CPC分类号： B23K9/323 , B23K9/0953 , B23K15/0026 , B23K15/02 , H05H1/36 , H05H2001/3473
摘要： A system and method for identifying a torch assembly associated with a thermal processing system can include a detector that detects a multi-bit binary signal based on a plurality of open circuits or closed circuits with the thermal processing system. Each representative binary signal can comprise an individual physical component. The system can also include a control mechanism in communication with the detector, the control mechanism identifying at least one characteristic of the torch assembly based upon the multi-bit binary signal.
摘要翻译： 用于识别与热处理系统相关联的火炬组件的系统和方法可以包括检测器，其基于具有热处理系统的多个开路或闭合电路来检测多位二进制信号。 每个代表性的二进制信号可以包括单独的物理组件。 该系统还可以包括与检测器通信的控制机构，控制机构基于多位二进制信号来识别手电筒组件的至少一个特性。
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公开(公告)号：US06365868B1
公开(公告)日：2002-04-02
申请号：US09515139
申请日：2000-02-29
申请人： Dennis M. Borowy , Tianting Ren
发明人： Dennis M. Borowy , Tianting Ren
IPC分类号： B23K1000
CPC分类号： B23K10/006
摘要： This invention relates to methods and apparatus for controlling a power supply of a plasma arc system. According to the method, any AC input voltage within a range of input voltages is provided into the input stage and a rectified output voltage is thereby generated. The rectified output voltage is provided into the power factor corrected boost stage and a DC signal is thereby generated. The DC signal is provided into an auxiliary power supply and a regulated power signal is thereby generated. The regulated power signal is provided into a digital signal processor module and an output control signal is thereby generated. The output control signal is provided into the inverter stage and a plasma arc current is thereby generated.
摘要翻译： 本发明涉及用于控制等离子体电弧系统的电源的方法和装置。 根据该方法，将输入电压范围内的任何AC输入电压提供到输入级，从而产生整流输出电压。 整流后的输出电压被提供给功率因数校正升压级，从而产生直流信号。 DC信号被提供给辅助电源，从而产生调节功率信号。 调节的功率信号被提供到数字信号处理器模块中，由此产生输出控制信号。 输出控制信号被提供给逆变器级，由此产生等离子体电弧电流。
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