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1. 发明公开

EP4301538A1 BRAKING ENERGY RECOVERY CIRCUIT 审中-实审
公开(公告)号：EP4301538A1
公开(公告)日：2024-01-10
申请号：EP22707882.1
申请日：2022-02-24
申请人： ESAB AB
发明人： KARLSSON, Rolf
IPC分类号： B23K9/10 , B23K9/09

2. 发明公开

EP1035941A1 ARC IGNITION ARRANGEMENT 有权
标题翻译： ARC点火设置
公开(公告)号：EP1035941A1
公开(公告)日：2000-09-20
申请号：EP98943166.3
申请日：1998-09-10
申请人： Esab AB
发明人： KARLSSON, Rolf
IPC分类号： B23K9/067
CPC分类号： B23K9/0672
摘要： The invention relates to an arrangement for contact arc ignition in manual TIG welding and to a method for welding with this arrangement. The arc is established by lifting the welding torch (12) after contact between electrode (13) and workpiece (14) under low ignition current. When the arc length is sufficient, the welder orders a change-over to welding current via an operating device (11). The invention can also be used for controlling the supply of heat to the workpiece both during continuous bead application and during the crater filling time at the end of welding. The invention creates reliable ignitions without extensive use of control electronics, and it substantially reduces the electrode wear in manual TIG welding.

3. 发明公开

EP2478630A1 INVERTER WITH COMMUTATION CIRCUIT 审中-公开
标题翻译：驱动器，带整流
公开(公告)号：EP2478630A1
公开(公告)日：2012-07-25
申请号：EP09736867.4
申请日：2009-09-14
申请人： Esab AB
发明人： KARLSSON, Rolf , ANDERSSON, Per , VESSMAN, Dan
IPC分类号： H02M5/458
CPC分类号： H02M5/458 , Y10T307/625
摘要： An inverter provides alternating current (iout) to a load (130) containing a welding circuit. The inverter includes at least one commutation circuit (110) and a bridge circuit (120) connected to a bus forwarding power from a DC power source (100). The bus is also galvanically connected to the load (130) via the bridge circuit (120). The at least one commutation circuit (110) receives power from the DC power source (100); receives energy from inductive elements in the load (130) during a storage phase of a cyclic procedure, and controls energy feedback to the load (130) during a feedback phase of the cyclic procedure. The at least one commutation circuit (110) is a two-pole having a first pole (p1) connected to a first node (A) and a second pole (p2) connected to a second node (B). The at least one commutation circuit (110) is arranged to receive energy from the load (130) and feedback energy to the load (130) via the first and second nodes (A; B), either directly or via the bridge circuit (120). Energy-flow control means (D
IN , S
OUT ) in each of the at least one commutation circuit (110) control energy to be stored in and taken out from a recovery capacitor (CR) in the commutation circuit (110) in question. The bridge circuit (120) delivers the alternating current (iout) to the load (130).

4. 发明授权

EP1035941B1 ARC IGNITION ARRANGEMENT 有权
标题翻译： ARC点火设置
公开(公告)号：EP1035941B1
公开(公告)日：2003-11-26
申请号：EP98943166.3
申请日：1998-09-10
申请人： Esab AB
发明人： KARLSSON, Rolf
IPC分类号： B23K9/067
CPC分类号： B23K9/0672
摘要： The invention relates to an arrangement for contact arc ignition in manual TIG welding and to a method for welding with this arrangement. The arc is established by lifting the welding torch (12) after contact between electrode (13) and workpiece (14) under low ignition current. When the arc length is sufficient, the welder orders a change-over to welding current via an operating device (11). The invention can also be used for controlling the supply of heat to the workpiece both during continuous bead application and during the crater filling time at the end of welding. The invention creates reliable ignitions without extensive use of control electronics, and it substantially reduces the electrode wear in manual TIG welding.

5. 发明公开

EP4323140A1 OVERVOLTAGE PROTECTION FOR CURRENT BRAKING SWITCH 审中-实审
公开(公告)号：EP4323140A1
公开(公告)日：2024-02-21
申请号：EP22716526.3
申请日：2022-04-07
申请人： ESAB AB
发明人： KARLSSON, Rolf
IPC分类号： B23K9/095 , B23K9/10

6. 发明授权

EP1021269B1 ARRANGEMENT WITH TRANSFER OF MEASURED VALUES 有权
标题翻译：伴读发送装置
公开(公告)号：EP1021269B1
公开(公告)日：2003-04-09
申请号：EP98943165.5
申请日：1998-09-10
申请人： Esab AB
发明人： KARLSSON, Rolf
IPC分类号： B23K9/09 , B23K9/095
CPC分类号： B23K9/0673
摘要： The invention relates to an arrangement for material transport and/or energy transport by means of electric arc. Measured values are transferred with suppression of disturbances from the HF device (2) without appreciable damping of the HF voltage to the electrode (14). A measurement winding (16) is arranged together with a power winding (8) in such a way that effective suppression of disturbances is achieved. Examples of areas of application are thermal spraying, cutting and welding, in particular mechanized TIG welding, but the invention is principally indicated in cases where a spark is established with HF voltage across a gap filled with a gas or a gas/liquid mixture and where at the same time some parameter has to be measured in connection with the spark gap.

7. 发明公开

EP1021269A1 ARRANGEMENT WITH TRANSFER OF MEASURED VALUES 有权
标题翻译：伴读发送装置
公开(公告)号：EP1021269A1
公开(公告)日：2000-07-26
申请号：EP98943165.5
申请日：1998-09-10
申请人： Esab AB
发明人： KARLSSON, Rolf
IPC分类号： B23K9/09 , B23K9/095
CPC分类号： B23K9/0673
摘要： The invention relates to an arrangement for material transport and/or energy transport by means of electric arc. Measured values are transferred with suppression of disturbances from the HF device (2) without appreciable damping of the HF voltage to the electrode (14). A measurement winding (16) is arranged together with a power winding (8) in such a way that effective suppression of disturbances is achieved. Examples of areas of application are thermal spraying, cutting and welding, in particular mechanized TIG welding, but the invention is principally indicated in cases where a spark is established with HF voltage across a gap filled with a gas or a gas/liquid mixture and where at the same time some parameter has to be measured in connection with the spark gap.

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