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31. 发明申请

US20050145611A1 Power source for plasma device 失效
标题翻译：等离子体设备的电源
公开(公告)号：US20050145611A1
公开(公告)日：2005-07-07
申请号：US11019893
申请日：2004-12-23
申请人： George Blankenship , Robert Dodge , Todd Kooken , Lifeng Luo
发明人： George Blankenship , Robert Dodge , Todd Kooken , Lifeng Luo
IPC分类号： B23K9/073 , H01F27/00 , H01F27/28 , H01F29/02 , H01F30/00 , H01F30/04 , H01F38/08 , H02M9/00 , B23K9/10
CPC分类号： H01F38/00 , H01F27/28 , H01F29/02 , H01F30/04 , H01F38/085 , H01F2038/006 , H05H1/36
摘要： A plasma device including a power source for creating an AC output signal with a matrix transformer between said power source and a series circuit comprising a first lead and a second lead. The matrix transformer including at least two modules with a first primary portion formed of first and second tubes connected at one end and a second primary portion formed of third and fourth tubes connected at one end, with said third and fourth tubes mounted in, and electrically isolated from, said first and second tubes, respectively, where said concentric tubes define generally parallel elongated passages through the module. A secondary winding is wrapped through the elongated passages of each module. There is a first series circuit from the power source to the matrix transformer for passing the first polarity of the AC output signal through the first primary sections of the modules, a second series circuit from the power source to the matrix transformer for passing the second polarity of the output signal through the second primary sections, a rectifier for each of the secondary windings of the modules and a third series circuit connecting the rectifiers in series with the first and second leads so a voltage of over about 500 volts is across these leads.
摘要翻译：一种等离子体装置，包括用于在所述电源和包括第一引线和第二引线的串联电路之间用矩阵变压器产生AC输出信号的电源。所述矩阵变压器包括至少两个模块，所述模块具有由在一端连接的第一和第二管形成的第一主要部分和由一端连接的第三和第四管形成的第二主要部分，所述第三和第四管安装在其中，分别与所述第一和第二管隔离，其中所述同心管限定通过模块的大致平行的细长通道。次级绕组通过每个模块的细长通道包裹。存在从电源到矩阵变压器的第一串联电路，用于使交流输出信号的第一极性通过模块的第一初级部分，从电源到矩阵变换器的第二串联电路，用于使第二极性通过第二主要部分的输出信号，用于模块的每个次级绕组的整流器以及将整流器与第一和第二引线串联连接的第三串联电路，使得在这些引线上的电压超过约500伏特。

32. 发明授权

US5965040A Plasma arc torch 有权
公开(公告)号：US5965040A
公开(公告)日：1999-10-12
申请号：US184246
申请日：1998-11-02
申请人： Lifeng Luo , William T. Matthews , David W. Perrin
发明人： Lifeng Luo , William T. Matthews , David W. Perrin
IPC分类号： H05H1/28 , B23K10/00 , F23D99/00 , H05H1/26 , H05H1/32 , H05H1/34
CPC分类号： H05H1/34 , B23K10/00 , H05H2001/3468 , H05H2001/3478 , H05H2001/3489
摘要： A plasma torch comprises a tubular nozzle having an end wall and an electrode in the nozzle having a nose end facing the end wall. The nose end and end wall provide a plasma gas chamber, and the end wall has a gas chamber outlet opening extending axially therethrough. The gas chamber has an entrance radially outwardly of the outlet opening and the end wall has a plurality of arcuate ribs thereon circumferentially spaced apart about said outlet opening and providing a plurality of arcuate gas directing channels for radially guiding the flow of plasma gas in a swirling flow pattern from the entrance to the outlet opening. The nozzle and nozzle mounting components provide an improved arrangement for cooling the torch tip and producing a gas shield about the plasma jet.

33. 发明授权

US5416297A Plasma arc torch ignition circuit and method 失效
标题翻译：等离子弧焊枪点火电路及方法
公开(公告)号：US5416297A
公开(公告)日：1995-05-16
申请号：US39898
申请日：1993-03-30
申请人： Lifeng Luo , Jeffrey L. Peterson , David J. Rhodes
发明人： Lifeng Luo , Jeffrey L. Peterson , David J. Rhodes
IPC分类号： H05H1/36 , B23K10/00
CPC分类号： H05H1/36
摘要： A high frequency, high voltage starting circuit for a plasma arc cutting torch is constructed and operated with isolation between a pilot arc circuit and a transfer arc circuit. The duration and value of the energy flow in the pilot arc after initiating the HFHV signal are controlled electronically. The maximum value is sufficient to initiate and support the pilot arc and its transfer. The duration is sufficiently long to allow the pilot arc to transfer, but sufficiently short that nozzle wear is reduced. In the preferred form both circuits have a common D.C. power supply and independent surge injector circuits each formed by a resistor and surge capacitor connected in parallel with the power supply. An L-C loop in the pilot arc circuit maintains a generally constant current output on discharge.
摘要翻译：用于等离子体电弧割炬的高频，高压启动电路由导电电弧电路和转移电弧电路之间的隔离构造和操作。在启动HFHV信号之后的导频弧中的能量流的持续时间和值被电子控制。最大值足以启动和支持引导电弧及其传输。持续时间足够长以允许导电弧转移，但足够短，使得喷嘴磨损降低。在优选形式中，两个电路都具有共同的直流电源和独立的浪涌喷射器电路，每个电涌注入器电路由与电源并联连接的电阻器和浪涌电容器形成。导通电弧电路中的L-C环路在放电时保持大致恒定的电流输出。

34. 发明授权

US10274007B2 Hybrid dynamic pressure gas thrust bearing 有权
公开(公告)号：US10274007B2
公开(公告)日：2019-04-30
申请号：US15575604
申请日：2015-05-19
申请人： Lifeng Luo
发明人： Lifeng Luo
IPC分类号： F16C17/04 , F16C33/02 , F16C33/10 , F16C17/08
摘要： A hybrid dynamic pressure gas thrust bearing, comprises two outer discs, an inner disc clamped between the two outer discs, and foil type elastic parts arranged between each outer disc and the inner disc; and the two end faces of the inner disc are respectively provided with regular groove-type patterns, and the groove-type pattern in one end face is in mirror symmetry with the groove-type pattern in the other end face. The hybrid dynamic pressure gas thrust provided by the invention has the rigidity characteristic of the high-limit rotating speed of the groove-type dynamic pressure gas thrust bearing, and has the flexible characteristic of the high impact resistance and the load capacity of the foil type dynamic pressure gas thrust bearing, it can meet the application of dynamic pressure gas thrust bearings in ultra high-speed areas under larger loads.

35. 发明授权

US10228015B2 Hybrid dynamic pressure gas radial bearing 有权
公开(公告)号：US10228015B2
公开(公告)日：2019-03-12
申请号：US15575617
申请日：2015-05-19
申请人： Lifeng Luo
发明人： Lifeng Luo
IPC分类号： F16C32/06 , F16C17/02 , F16C33/10
摘要： A hybrid dynamic pressure gas radial bearing, which comprises a bearing outer sleeve, an inner sleeve and a foil type elastic part arranged between the bearing outer sleeve and the inner sleeve, the outer circumferential face and the left and right end faces of the bearing inner sleeve are respectively provided with regular groove-type patterns, and the groove-type patterns in one end face is in mirror symmetry with the groove-type pattern in the other end face, and the axial contour lines of the groove-type patterns in the outer circumference face and the radial contour lines of the groove-type patterns in the left and right end faces are in one-to-one correspondence and are connected with each other, has the rigidity characteristic of the high-limit rotating speed of the radial bearing of the groove-type dynamic pressure gas.

36. 发明申请

US20080150664A1 POWER SOURCE FOR PLASMA DEVICE 有权
标题翻译：等离子体装置的电源
公开(公告)号：US20080150664A1
公开(公告)日：2008-06-26
申请号：US12042889
申请日：2008-03-05
申请人： George D. Blankenship , Robert L. Dodge , Todd E. Kooken , Lifeng Luo
发明人： George D. Blankenship , Robert L. Dodge , Todd E. Kooken , Lifeng Luo
IPC分类号： H01F27/28
CPC分类号： H01F38/00 , H01F27/28 , H01F29/02 , H01F30/04 , H01F38/085 , H01F2038/006 , H05H1/36
摘要： A plasma device including a power source for creating an AC output signal with a matrix transformer between said power source and a series circuit comprising a first lead and a second lead. The matrix transformer including at least two modules with a first primary portion formed of first and second tubes connected at one end and a second primary portion formed of third and fourth tubes connected at one end, with said third and fourth tubes mounted in, and electrically isolated from, said first and second tubes, respectively, where said concentric tubes define generally parallel elongated passages through the module. A secondary winding is wrapped through the elongated passages of each module. There is a first series circuit from the power source to the matrix transformer for passing the first polarity of the AC output signal through the first primary sections of the modules, a second series circuit from the power source to the matrix transformer for passing the second polarity of the output signal through the second primary sections, a rectifier for each of the secondary windings of the modules and a third series circuit connecting the rectifiers in series with the first and second leads so a voltage of over about 500 volts is across these leads.
摘要翻译：一种等离子体装置，包括用于在所述电源和包括第一引线和第二引线的串联电路之间用矩阵变压器产生AC输出信号的电源。所述矩阵变压器包括至少两个模块，所述模块具有由在一端连接的第一和第二管形成的第一主要部分和由一端连接的第三和第四管形成的第二主要部分，所述第三和第四管安装在其中，分别与所述第一和第二管隔离，其中所述同心管限定通过模块的大致平行的细长通道。次级绕组通过每个模块的细长通道包裹。存在从电源到矩阵变压器的第一串联电路，用于使交流输出信号的第一极性通过模块的第一初级部分，从电源到矩阵变换器的第二串联电路，用于使第二极性通过第二主要部分的输出信号，用于模块的每个次级绕组的整流器以及将整流器与第一和第二引线串联连接的第三串联电路，使得在这些引线上的电压超过约500伏特。

37. 发明申请

US20060175313A1 Modular power source for electric ARC welding and output chopper 有权
标题翻译：电弧焊和输出斩波器的模块化电源
公开(公告)号：US20060175313A1
公开(公告)日：2006-08-10
申请号：US11051196
申请日：2005-02-07
申请人： Todd Kooken , Lifeng Luo
发明人： Todd Kooken , Lifeng Luo
IPC分类号： B23K9/10
CPC分类号： B23K9/173 , B23K9/09 , B23K9/1043 , B23K9/1075
摘要： A three stage power source for an electric arc welding process comprising an input stage having an AC input and a first DC output signal; a second stage in the form of an unregulated DC to DC converter having an input connected to the first DC output signal, a network of switches switched at a high frequency with a given duty cycle to convert the input into a first internal AC signal, an isolation transformer with a primary winding driven by the first internal high frequency AC signal and a secondary winding for creating a second internal high frequency AC signal and a rectifier to convert the second internal AC signal into a second DC output signal of the second stage; with a magnitude related to the duty cycle of the switches and, a third stage to convert the second DC output signal to a welding output for welding wherein the input stage and the second stage are assembled into a first module and the third stage is assembled into a second module connectable to the first module.
摘要翻译：一种用于电弧焊接工艺的三级电源，包括具有AC输入和第一DC输出信号的输入级; 具有连接到第一DC输出信号的输入的未调节的DC-DC转换器形式的第二级，以给定占空比以高频切换的开关网络，以将输入转换为第一内部AC信号，隔离变压器，其具有由所述第一内部高频AC信号驱动的初级绕组和用于产生第二内部高频AC信号的次级绕组和将所述第二内部AC信号转换为所述第二级的第二DC输出信号的整流器; 具有与开关的占空比相关的幅度，以及将第二DC输出信号转换为焊接的焊接输出的第三级，其中输入级和第二级被组装成第一模块，并且第三级被组装成可连接到第一模块的第二模块。

38. 发明授权

US06268587B1 Current feedback device for electric arc welder 有权
标题翻译：电弧焊机电流反馈装置
公开(公告)号：US06268587B1
公开(公告)日：2001-07-31
申请号：US09507642
申请日：2000-02-22
申请人： Todd Eric Kooken , Lifeng Luo
发明人： Todd Eric Kooken , Lifeng Luo
IPC分类号： B23K910
CPC分类号： B23K9/1056 , B23K9/091 , B23K9/092 , B23K9/1043
摘要： In an electric arc welder including a main transformer with a primary stage coupled to a secondary stage in which is created an AC output current, a first switch opened and closed at a given rate to pass a series of first pulses of DC current in a first circuit having a first lead and through at least a portion of the primary stage in a first electrical direction, with each of the first pulses having a length determined by the time the first switch is closed, a second switch opened and closed at the given rate to pass a series of second pulses of DC current in a second circuit having a second lead through at a least a portion of the primary stage in a second electrical direction with each of the second pulses having a length determined by the time the second switch is closed, and a control circuit for rapidly closing the first and second switches in sequence to induce an AC current in the output stage, the improvement comprising: a first current transformer surrounding the first lead of the first circuit to develop a first output signal controlled by the first pulses, a second current transformer surrounding the second lead of the second circuit and developing a second output signal controlled by the second pulses and a circuit for combining the first and second output signals to provide a current signal indicative of the total current in the primary stage of the main transformer.
摘要翻译：在电弧焊机中，包括主变压器，初级级耦合到次级级，其中产生交流输出电流，第一开关以给定速率开和关，以在第一级中通过一系列直流电流的第一脉冲电路具有第一引线并且沿着第一电方向通过初级级的至少一部分，其中每个第一脉冲具有由第一开关闭合时间确定的长度，以给定速率打开和闭合的第二开关在具有第二引线的第二电路中通过一系列第二脉冲的DC电流，所述第二电路在第二电气方向的初级级的至少一部分上通过，其中每个第二脉冲具有由第二开关的时间确定的长度闭合，以及用于依次快速闭合第一和第二开关以在输出级中引起AC电流的控制电路，其改进包括：围绕第一引线o的第一电流互感器 f是用于开发由第一脉冲控制的第一输出信号的第一电路，围绕第二电路的第二引线的第二电流互感器并且显影由第二脉冲控制的第二输出信号和用于组合第一和第二输出信号的电路以提供指示主变压器的初级中的总电流的电流信号。

39. 发明授权

US5893985A Plasma arc torch 失效
标题翻译：等离子弧焊炬
公开(公告)号：US5893985A
公开(公告)日：1999-04-13
申请号：US818744
申请日：1997-03-14
申请人： Lifeng Luo , William T. Matthews , David W. Perrin
发明人： Lifeng Luo , William T. Matthews , David W. Perrin
IPC分类号： H05H1/28 , B23K10/00 , F23D99/00 , H05H1/26 , H05H1/32 , H05H1/34
CPC分类号： H05H1/34 , B23K10/00 , H05H2001/3468 , H05H2001/3478 , H05H2001/3489
摘要： A plasma torch comprises a tubular nozzle having an end wall and an electrode in the nozzle having a nose end facing the end wall. The nose end and end wall provide a plasma gas chamber, and the end wall has a gas chamber outlet opening extending axially therethrough. The gas chamber has an entrance radially outwardly of the outlet opening and the end wall has a plurality of arcuate ribs thereon circumferentially spaced apart about said outlet opening and providing a plurality of arcuate gas directing channels for radially guiding the flow of plasma gas in a swirling flow pattern from the entrance to the outlet opening. The nozzle and nozzle mounting components provide an improved arrangement for cooling the torch tip and producing a gas shield about the plasma jet.
摘要翻译：等离子体焰炬包括具有端壁的管状喷嘴和喷嘴中具有面向端壁的鼻端的电极。鼻端和端壁提供等离子体气体室，并且端壁具有轴向延伸穿过其中的气体室出口。气室具有从出口开口径向向外的入口，并且端壁具有围绕所述出口开口周向间隔开的多个弧形肋，并且提供多个弧形气体引导通道，用于径向引导涡流中的等离子体气流从入口到出口的流动图案。喷嘴和喷嘴安装部件提供了用于冷却割炬尖端并且围绕等离子体射流产生气体屏蔽的改进布置。

40. 发明授权

US5856647A Drag cup for plasma arc torch 失效
标题翻译：拖轮用于等离子弧焊炬
公开(公告)号：US5856647A
公开(公告)日：1999-01-05
申请号：US819575
申请日：1997-03-14
申请人： Lifeng Luo
发明人： Lifeng Luo
IPC分类号： B23K10/00 , H05H1/34
CPC分类号： B23K10/00 , H05H1/34 , H05H2001/3457 , H05H2001/3468 , H05H2001/3489
摘要： A drag cup for a plasma arc torch is mounted on a sleeve member of the torch tip having a conical outer surface portion converging toward the torch nozzle and electrode assembly. The drag cup includes a mounting end, a conical portion extending along the conical portion of the sleeve member, and an end radially spaced from and surrounding the torch nozzle and including an end wall spaced axially outwardly of the end of the nozzle and having an opening therethrough coaxial with the plasma jet outlet orifice in the nozzle. The opening through the end wall of the drag cup is 3 to 6 times the size of the nozzle orifice and is large enough to provide a shielding gas flow about the plasma jet without disturbing the jet and, at the same time is small enough to protect the nozzle against molten metal blow-back through the opening.
摘要翻译：用于等离子弧焊炬的拖曳杯安装在具有锥形外表面部分的炬尖的套筒构件上，该锥形外表面部分朝向炬喷嘴和电极组件会聚。牵引杯包括安装端，沿着套筒构件的锥形部分延伸的圆锥形部分，以及与喷枪喷嘴径向间隔开并围绕喷嘴的端部，并且包括沿喷嘴端部轴向向外间隔开的端壁，并具有开口与喷嘴中的等离子体喷射出口孔同轴。通过拖杯的端壁的开口是喷嘴孔的尺寸的3至6倍，并且足够大以在等离子体射流周围提供保护气体流动而不干扰射流，并且同时足够小以保护喷嘴抵抗熔融金属通过开口吹回。

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