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公开(公告)号：US20170287679A1
公开(公告)日：2017-10-05
申请号：US15510448
申请日：2014-09-16
Applicant: FUJI MACHINE MFG. CO., LTD
Inventor： Toshiyuki IKEDO , Takahiro JINDO
IPC: H01J37/32
CPC classification number: H01J37/3244 , H01J37/32834 , H05H1/24 , H05H1/341 , H05H1/46 , H05H2001/466
Abstract: Plasma gas is ejected from inner gas ejection ports that are formed in a downstream side housing, and nitrogen gas is supplied as protective gas to a protective gas source between a housing and a cover section. Nitrogen gas is sucked in accompanying exhaust from inner gas ejection ports of plasma gas, and is ejected from the outer gas ejection ports. In this case, since a layer of nitrogen gas is formed in the periphery of plasma gas, it is possible to make it difficult to bring the plasma gas into contact with air, and it is possible to make it difficult to react a reactive species such as a radical in the plasma gas, oxygen in the air, and the like.
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公开(公告)号：US09288888B2
公开(公告)日：2016-03-15
申请号：US14137148
申请日：2013-12-20
Applicant: The ESAB Group, Inc.
Inventor： David Charles Griffin , Gregory William Diehl , Christopher Reed Martin , Wayne Stanley Severence, Jr.
CPC classification number: H05H1/34 , B23K9/296 , B23K10/00 , H05H1/24 , H05H1/341 , H05H2001/3442 , H05H2001/3457 , H05H2001/3468
Abstract: A plasma arc torch includes an annular baffle defining distinct faces A, B, C, and D. Faces A and C are opposite from each other, and faces B and D are opposite from each other. First passages for fluid flow extend between the faces A and C, and second passages extend between the faces B and D. The baffle is installable in an annular space between an inner wall and an outer wall, in either of two orientations. In a first orientation, the first passages are open to fluid flow and the second passages are closed by engagement of the inner and outer walls with the faces B and D, and in a second orientation, flipped over relative to the first orientation, the second passages are open to fluid flow and the first passages are closed by engagement of the inner and outer walls with the faces A and C.
Abstract translation: 等离子弧焊炬包括限定不同的面A，B，C和D的环形挡板。面A和C彼此相对，面B和D彼此相反。 用于流体流动的第一通道在面A和C之间延伸，第二通道在面B和D之间延伸。挡板可安装在内壁和外壁之间的环形空间中，两个取向中的任一个。 在第一方向上，第一通道对流体流动是开放的，并且第二通道通过内壁和外壁与面B和D的接合而封闭，并且在第二方向上相对于第一方向翻转，第二通道 通道对流体流动是开放的，并且通过内壁和外壁与面A和C的接合来封闭第一通道。
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公开(公告)号：US20130175244A1
公开(公告)日：2013-07-11
申请号：US13348281
申请日：2012-01-11
Applicant: David Charles Griffin , Gregory William Diehl , Christopher Reed Martin
IPC: B23K10/00
CPC classification number: B23K10/00 , B23K9/296 , H05H1/34 , H05H1/341 , H05H2001/3468
Abstract: A plasma arc torch includes an annular baffle defining distinct faces A, B, C, and D. Faces A and C are opposite from each other, and faces B and D are opposite from each other. First passages for fluid flow extend between the faces A and C, and second passages extend between the faces B and D. The baffle is installable in an annular space between an inner wall and an outer wall, in either of two orientations. In a first orientation, the first passages are open to fluid flow and the second passages are closed by engagement of the inner and outer walls with the faces B and D, and in a second orientation, flipped over relative to the first orientation, the second passages are open to fluid flow and the first passages are closed by engagement of the inner and outer walls with the faces A and C.
Abstract translation: 等离子弧焊炬包括限定不同的面A，B，C和D的环形挡板。面A和C彼此相对，面B和D彼此相反。 用于流体流动的第一通道在面A和C之间延伸，第二通道在面B和D之间延伸。挡板可安装在内壁和外壁之间的环形空间中，两个取向中的任一个。 在第一方向上，第一通道对流体流动是开放的，并且第二通道通过内壁和外壁与面B和D的接合而封闭，并且在第二方向上相对于第一方向翻转，第二通道 通道对流体流动是开放的，并且通过内壁和外壁与面A和C的接合来封闭第一通道。
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公开(公告)号：US07075030B2
公开(公告)日：2006-07-11
申请号：US10932653
申请日：2004-08-30
Applicant: Ady Hershcovitch , Rory Dominick Montano
Inventor： Ady Hershcovitch , Rory Dominick Montano
IPC: B23K10/00
CPC classification number: B23K15/10 , B23K26/348 , H05H1/341 , H05H2001/3468
Abstract: An apparatus includes a plasma generator aligned with a beam generator for producing a plasma to shield an energized beam. An electrode is coaxially aligned with the plasma generator and followed in turn by a vortex generator coaxially aligned with the electrode. A target is spaced from the vortex generator inside a fluid environment. The electrode is electrically biased relative to the electrically grounded target for driving the plasma toward the target inside a vortex shield.
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公开(公告)号：US20060043075A1
公开(公告)日：2006-03-02
申请号：US10932653
申请日：2004-08-30
Applicant: Ady Hershcovitch , Rory Montano
Inventor： Ady Hershcovitch , Rory Montano
IPC: B23K10/00
CPC classification number: B23K15/10 , B23K26/348 , H05H1/341 , H05H2001/3468
Abstract: An apparatus includes a plasma generator aligned with a beam generator for producing a plasma to shield an energized beam. An electrode is coaxially aligned with the plasma generator and followed in turn by a vortex generator coaxially aligned with the electrode. A target is spaced from the vortex generator inside a fluid environment. The electrode is electrically biased relative to the electrically grounded target for driving the plasma toward the target inside a vortex shield.
Abstract translation: 一种装置包括等离子体发生器，与等离子体发生器对准，用于产生用于屏蔽通电束的等离子体。 电极与等离子体发生器同轴对准，然后依次与与电极同轴对齐的涡流发生器。 目标与流体环境内的涡流发生器间隔开。 电极相对于电接地目标电气偏置，用于在涡流屏蔽内驱动等离子体朝向目标。
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Patent Agency Ranking6.发明授权
公开(公告)号：US5591357A
公开(公告)日：1997-01-07
申请号：US394707
申请日：1995-02-27
Applicant: Richard W. Couch, Jr. , Nicholas A. Sanders , Lifeng Luo , John Sobr
Inventor： Richard W. Couch, Jr. , Nicholas A. Sanders , Lifeng Luo , John Sobr
CPC classification number: H05H1/34 , B23K10/00 , B23K10/006 , H05H1/341 , H05H1/28 , H05H1/30 , H05H2001/3421 , H05H2001/3426 , H05H2001/3442 , H05H2001/3457 , H05H2001/3468 , H05H2001/3478 , H05H2001/3494
Abstract: A plasma arc torch has a secondary gas flow that is extremely large during piercing of a workpiece to keep splattered molten metal away from the torch and thereby prevent "double arcing". The secondary flow exits the torch immediately adjacent the transferred plasma arc and is an extremely uniform, swirling flow. A swirl ring is located in the secondary gas flow path at the exit point. A prechamber feeds gas to the swirl ring, which is in turn fed through a flow restricting orifice. For certain applications the secondary gas is a mixture of an oxidizing gas, preferably oxygen, and a non-oxidizing gas, preferably nitrogen, in a flow ratio of oxygen to nitrogen in the range of 2:3 to 9:1. Preferably the flow ratio is about 2:1. A network of conduits and solenoid valves operated under the control of a central microprocessor regulates the flows of plasma gas and secondary gas and mixes the secondary gas. The network includes valved parallel branches that provide a quick charge capability and a set of venting valves, also electrically actuated by the microprocessor, to provide a quick discharge. In a preferred high-definition embodiment, a nozzle with a cut back outer surface and a large, conical head allows a metal seal and enhanced cooling. A two-piece cap protects the nozzle during cutting.
Abstract translation: 等离子弧焊炬具有在工件刺穿期间非常大的二次气流，以保持溅射的熔融金属远离焊炬，从而防止“双电弧”。 二次流动离开火炬，紧邻转移的等离子体电弧，并且是非常均匀的旋转流。 旋流环位于出口处的二次气体流路中。 预燃室将气体供给涡流环，涡流环又通过流动限制孔进料。 对于某些应用，二次气体是氧气与氮气的流量比在2:3至9:1范围内的氧化气体，优选氧气和非氧化气体，优选氮气的混合物。 流量比优选为约2:1。 在中央微处理器的控制下操作的管道和电磁阀网络调节等离子体气体和二次气体的流动并混合二次气体。 该网络包括提供快速充电能力的带阀的并联支路以及也由微处理器电致动的一组通气阀，以提供快速放电。 在优选的高清晰度实施例中，具有切割的外表面和大的锥形头部的喷嘴允许金属密封和增强的冷却。 两片盖子在切割过程中保护喷嘴。
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公开(公告)号：US5208448A
公开(公告)日：1993-05-04
申请号：US863215
申请日：1992-04-03
Applicant: Jeffrey S. Everett
Inventor： Jeffrey S. Everett
CPC classification number: H05H1/341 , H05H1/28 , H05H1/34 , H05H2001/3442 , H05H2001/3478
Abstract: An improved plasma torch nozzle which has a substantially barrel shaped body having a longitudinal opening therethrough for directing the flow of gas for a plasma arc from rearward portions of the body downstream to forward portions of the body and then out of a face at the forward portions to form a plasma arc in the presence of a sufficient electrical potential difference. The nozzle body particularly comprises a rear section for which the outer surface portions diverge with respect to the downstream direction, a center section for which the outer surface portions are cylindrical with respect to the downstream direction, and a forward section for which the outer surface portions converge with respect to the downstream direction so that the respective outer surface portions form a continuous outer surface for the nozzle body that encourages the flow of gases that is directed along the outer surface of the nozzle body to follow the outer surface and converge at the face of the nozzle body.
Abstract translation: 一种改进的等离子体焰炬喷嘴，其具有基本上为桶形的主体，其具有穿过其的纵向开口，用于将等离子弧的气体流从主体的后部向下游延伸到主体的前部，然后从前部的表面 以在存在足够的电势差的情况下形成等离子体电弧。 喷嘴体特别地包括：外表面部分相对于下游方向发散的后部分，外表面部分相对于下游方向为圆柱形的中心部分和外表面部分 相对于下游方向会聚，使得各个外表面部分形成用于喷嘴体的连续外表面，其鼓励沿着喷嘴体的外表面引导的气体流动以跟随外表面并会聚在面 的喷嘴体。
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公开(公告)号：US5170033A
公开(公告)日：1992-12-08
申请号：US682991
申请日：1991-04-12
Applicant: Richard W. Couch, Jr. , Lifeng Luo , Nicholas A. Sanders
Inventor： Richard W. Couch, Jr. , Lifeng Luo , Nicholas A. Sanders
CPC classification number: H05H1/341 , B23K10/006 , H05H2001/3421 , H05H2001/3426 , H05H2001/3442 , H05H2001/3468 , H05H2001/3478 , H05H2001/3494
Abstract: A process and apparatus for reducing wear of an electrode in a plasma arc torch involves providing a substantial pressure drop in a flow of plasma gas from the torch to a plasma arc chamber defined by the electrode and a nozzle. The pressure drop is immediately before the plasma arc chamber. There is also a small, localized supply of the plasma gas located between the pressure drop and the plasma chamber. The supply is sufficient to stabilize the arc when the gas flow is cut off upstream of the pressure drop and the arc current is cut off very shortly thereafter. The pressure drop is small enough to permit an adequate flow of plasma gas to the plasma arc chamber during normal operations, but large enough to isolate residual gas in the torch from the plasma arc chamber when the arc current is cut off. The apparatus is preferably a swirl ring with an annular pre-chamber fed by a set of choke holes to feed gas to the chamber and create the pressure drop. A set of swirl holes feed gas from the pre-chamber to the plasma arc chamber.
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公开(公告)号：US4743734A
公开(公告)日：1988-05-10
申请号：US734443
申请日：1985-05-15
Applicant: Dimo T. Garlanov , Sergey I. Angelov
Inventor： Dimo T. Garlanov , Sergey I. Angelov
Abstract: Nozzle for plasma arc torch includes internal and external forming nozzles mounted one within other and fitted to the torch housing to form first and second gaps. The first gap is formed between the torch cathode and the internal nozzle, an internal vortex generator mounted in it. An external vortex generator is fitted in the second gap and is connect to races machined in the torch housing. A forming canal is designed in the front end of the internal nozzle and an intermediary nozzle is mounted between the internal and external nozzles. A third gap is formed between it and the internal nozzle, and the second gap is formed between the intermediary and the external nozzle. A second forming race coaxial with that of the internal nozzle is provided in the front part of the intermediary nozzle, thus forming a common forming race. An intermediary vortex generator with tangential races is included in the contact surface of the intermediary and internal nozzles. The tangential races are connected by their ends to the common forming race, and to an internal circular race on the intermediary nozzle. This race is connected by holes to an external circular race connected with a pipe connection. The second gap is connected to the housing races by means of the external vortex generator, connecting races of the intermediary nozzle and third gap. The connecting races are designed above the intermediary vortex generator.
Abstract translation: 用于等离子弧焊枪的喷嘴包括内部和外部成形喷嘴，其一个安装在另一个内部并安装到割炬壳体上以形成第一和第二间隙。 第一间隙形成在火炬阴极和内部喷嘴之间，安装在其中的内部涡流发生器。 外部涡流发生器安装在第二间隙中，并连接到手电筒壳体中加工的跑道。 成型管设计在内部喷嘴的前端，中间喷嘴安装在内部和外部喷嘴之间。 在其与内部喷嘴之间形成第三间隙，并且第二间隙形成在中间和外部喷嘴之间。 在中间喷嘴的前部设置有与内部喷嘴同轴的第二成形轮圈，从而形成共同的成形座圈。 在中间和内部喷嘴的接触表面中包括具有切向种族的中间涡流发生器。 切向赛车场的末端连接到普通的成型赛道，并在中间喷嘴上连接到一个内部的圆形赛道。 该比赛通过孔连接到与管道连接连接的外部圆形赛道。 第二间隙通过外部涡流发生器连接到壳体座圈，连接中间喷嘴的种族和第三间隙。 连接种类设计在中间涡流发生器之上。
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10.发明授权
公开(公告)号：US4466824A
公开(公告)日：1984-08-21
申请号：US382415
申请日：1982-05-26
Applicant: William H. Gauvin , George R. Kubanek
Inventor： William H. Gauvin , George R. Kubanek
IPC: C22B34/34 , B01J19/08 , C21C7/00 , C22B4/00 , C22B4/08 , C22B5/16 , C22B9/00 , C22B9/20 , C22B34/00 , C22B34/22 , H05H1/03 , H05H1/34 , H05H1/42
CPC classification number: H05H1/341 , B01J19/088 , C22B4/005 , H05H1/42 , H05H2001/3421 , H05H2001/3436
Abstract: A transferred-arc plasma reactor is disclosed. The reactor comprises a bottom portion defining a crucible for collecting molten material, an anode adapted to contact the molten material in the crucible, a sleeve mounted on top of the crucible and electrically insulated therefrom, a cathode assembly including a cathode mounted on top of the sleeve and electrically insulated therefrom, means for introducing feed material conveyed by a carrier gas near the top of the sleeve so that the material is fed against the inner wall of the sleeve, melted under the heating energy radiated by a plasma arc formed between the cathode and the molten material to form a falling film of molten material which flows down along the inner wall of the sleeve and drops into the crucible underneath, and outlet ports in the bottom portion of the reactor for exiting the carrier gas and the non-reacted plasma forming gas.
Abstract translation: 公开了一种转移电弧等离子体反应器。 反应器包括限定用于收集熔融材料的坩埚的底部，适于接触坩埚中的熔融材料的阳极，安装在坩埚顶部并与其电绝缘的套筒，阴极组件，其包括安装在坩埚顶部的阴极 套筒和电绝缘的装置，用于将由载气输送的进料输送到靠近套管顶部的装置，使得材料被供给抵靠套筒的内壁，在由在阴极之间形成的等离子体电弧所辐射的加热能量下熔化 和熔融材料形成熔融材料的下降膜，其沿着套筒的内壁向下流动并滴入下面的坩埚中，并且在反应器底部的出口端口用于离开载气和未反应的等离子体 形成气体。
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