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公开(公告)号：US11968770B2
公开(公告)日：2024-04-23
申请号：US17244072
申请日：2021-04-29
发明人： Jack A. Hunt
摘要： A novel plasma generation and containment system includes a first electrode, a second electrode, a power source, and an electromagnet. The first electrode and the second electrode are electrically coupled via a wire to form an open circuit. The voltage is asserted on the open circuit to form a spark between the first electrode and the second electrode to form a closed circuit. Then, a current is asserted on the closed circuit to form a plasma between the first electrode and the second electrode. The electromagnet provides a magnetic field to contain and compress the plasma.
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公开(公告)号：US20230363078A1
公开(公告)日：2023-11-09
申请号：US18132906
申请日：2023-04-10
发明人： Terrence E. Rogers
CPC分类号： H05H1/36 , H01F38/10 , H03M1/1245 , H01F27/385 , H05H2240/10
摘要： A system for determining an operational state of an atmospheric pressure plasma. The system has a transformer for coupling power into the atmospheric pressure plasma, a current sampling circuit configured to sample at least one current pulse flowing through a primary winding of the transformer, and a programmed microprocessor configured to determine, from a waveform of the current pulse, the operational state of the atmospheric pressure plasma. The operational state is one of: a no plasma state, a plasma origination state indicative of an ignited arc expanding into a plasma by gas flow thereinto, and a plasma maintenance state indicative of the plasma being expanded.
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公开(公告)号：US11665808B2
公开(公告)日：2023-05-30
申请号：US16892199
申请日：2020-06-03
发明人： John Jared Moss , Brian T. Noel
CPC分类号： H05H1/36 , H05H1/3431 , H05H1/2443
摘要： A method and apparatus for operating a DC plasma torch. The power supply used is at least two times the average operating voltage used, resulting in a more stable operation of the torch. The torch can include two concentric cylinder electrodes, the electrodes can be graphite, and the plasma forming gas can be hydrogen. The power supply provided also has the capability of igniting the torch at a pulse voltage of at least 20 kilovolts.
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公开(公告)号：US11665807B2
公开(公告)日：2023-05-30
申请号：US16795752
申请日：2020-02-20
申请人： Hypertherm, Inc.
IPC分类号： H05H1/28 , H05H1/34 , G06K19/077 , H05H1/36 , B23K9/28
CPC分类号： H05H1/28 , B23K9/285 , G06K19/07773 , H05H1/3405 , H05H1/3423 , H05H1/36 , H05H1/3421 , H05H1/3457 , H05H1/3468 , H05H1/3473 , G06K19/07773 , H05H1/3468
摘要： A torch head for a liquid-cooled plasma arc torch is provided. The torch head includes a torch body and a torch insulator, coupled to the torch body, having a substantially non-conductive insulator body. The torch insulator includes (i) a first liquid coolant channel, disposed within the insulator body, configured to conduct a fluid flow from the torch head into a consumable cartridge along a first preexisting flow path, (ii) a first liquid return channel, disposed within the insulator body, configured to return at least a portion of the fluid flow from the cartridge to the torch head along the first preexisting flow path, and (iii) a gas channel, disposed within the insulator body, configured to conduct a first gas flow from the torch head to the cartridge along a second preexisting flow path. The first and second preexisting flow paths are fluidly isolated from each other.
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公开(公告)号：US20190223282A1
公开(公告)日：2019-07-18
申请号：US16244483
申请日：2019-01-10
IPC分类号： H05H1/36
CPC分类号： H05H1/36 , B23K10/00 , B23K10/006 , B23K10/02 , H05H1/34
摘要： Approaches herein provide a system for determining whether one or more consumable parts of a plasma device has been removed or replaced while the plasma device and associated sensors lie dormant or are no longer receiving data, e.g., when the plasma device is power-off. The approaches herein determine whether certain types of data stored in a controller's memory are still valid, for example, for the purposes of determining degradation and/or end-of-life of the consumable parts. In the case that one or more consumable parts has been serviced or replaced, the data stored in the controller memory may no longer be considered valid for the consumable part(s). In one approach, the controller determines a status of a switch or a conformal film in the device following start-up, and determines, based on the position of the switch or the conformal film, whether the consumable part has been removed or replaced.
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公开(公告)号：US20180228014A1
公开(公告)日：2018-08-09
申请号：US15750010
申请日：2016-07-26
申请人： Edwards Limited
发明人： Simone Magni , Jerome Boegner , MinKyeong Noh , JiYoung Son , JinOk Lee
CPC分类号： H05H1/36 , B23K10/006 , G05B19/041
摘要： A power supply configured to supply power to a plasma torch in a gas treatment system within a predetermined power limit by periodically receiving at least one input signal indicative of a current power output by the power supply; and in response to the at least one input signal indicating the power output has passed a predetermined value adjusting the power output such that the power output is within the predetermined power limit. Adjusting the power output includes: outputting a control signal to change a flow rate of a source gas supplied to the plasma torch where the change would maintain a source gas flow rate within predetermined gas flow limits; and where the change would not maintain the source gas flow rate within the predetermined gas flow limits, outputting a control signal to change one of a current or voltage output by the power supply unit.
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公开(公告)号：US20180063938A1
公开(公告)日：2018-03-01
申请号：US15686926
申请日：2017-08-25
申请人： Hypertherm, Inc.
发明人： Eric Streit , Jesse A. Roberts , Junsong Mao , Richard Pavlik
CPC分类号： H05H1/36 , B23K10/003 , B23K10/006 , F16K31/06 , G05D7/0623 , G05D7/0676 , H05H1/28 , H05H1/34 , H05H2001/3426 , H05H2001/3484 , H05H2001/3489
摘要： In some aspects, methods for controlling a pneumatic system in a plasma arc processing system can include: receiving, by a computing device, a command to begin a plasma processing operation; generating a valve command signal for a valve that includes an operational drive voltage of at least about 125% of a continuous duty cycle coil voltage rating of the valve to open the valve; and once open, adjusting the valve command signal to facilitate a steady state operation to: monitor a steady state operational duty cycle of the valve, the steady state operational duty cycle being determined by comparing the continuous duty cycle coil voltage rating of the valve to an actual operational drive voltage supplied to the valve, and control the operational drive voltage supplied to the valve to maintain a steady state operational duty cycle of the valve at less than about 60% during steady state operation.
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8.发明授权公开(公告)号：US09817411B2
公开(公告)日：2017-11-14
申请号：US14634215
申请日：2015-02-27
申请人： Hypertherm, Inc.
CPC分类号： G05D23/1917 , B23K10/006 , G05B15/02 , H05H1/34 , H05H1/36 , H05H2001/3494
摘要： A material processing system for performing a processing operation includes a processor that receives information from a user relating to a proposed processing operation to be performed by the material processing system. The processor determines, responsive to the information received from the user, two or more configurations of consumable components for performing the proposed processing operation and estimates processing performance capabilities associated with using each configuration of consumable components. An interactive display presents the estimated processing performance capabilities to the user for selection.
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公开(公告)号：US09649715B2
公开(公告)日：2017-05-16
申请号：US12649727
申请日：2009-12-30
申请人： Jackie Winn
发明人： Jackie Winn
CPC分类号： H05H1/3405 , B23K10/006 , H05H1/34 , H05H1/36 , H05H2001/3426
摘要： Gas flow control for a plasma arc torch is provided. More particularly, a method and apparatus to modulate the pressure and flow from a plasma arc torch is provided. Cyclic pulsing of a flow control valve between states of fully open and fully closed provides for a relatively constant flow of plasma gas to the torch at a relatively constant pressure.
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公开(公告)号：US09474141B1
公开(公告)日：2016-10-18
申请号：US14989809
申请日：2016-01-07
发明人： Chau-Nan Hong , Yi-Ming Hsu , Li-Min Wang
摘要： An arc atmospheric pressure plasma device is described. The arc atmospheric pressure plasma device includes a first electrode, a second electrode and a nozzle. The first electrode is configured to connect to a power supply. The second electrode has a chamber and is grounded. The first electrode is located within the chamber. The nozzle is connected to a bottom of the second electrode, and has at least two nozzle channels. The nozzle channels communicate with the chamber.
摘要翻译： 描述了电弧大气压等离子体装置。 电弧大气压等离子体装置包括第一电极，第二电极和喷嘴。 第一电极被配置为连接到电源。 第二电极具有一个室并接地。 第一电极位于室内。 喷嘴连接到第二电极的底部，并具有至少两个喷嘴通道。 喷嘴通道与腔室连通。
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