公开(公告)号：WO2015093621A2

公开(公告)日：2015-06-25

申请号：PCT/JP2014/084202

申请日：2014-12-17

Applicant: NETUREN CO., LTD.

Inventor： INABA, Hirokazu ,  KIYOSAWA, Yutaka

IPC: C21D9/08

CPC classification number: H05B6/38 ,  C21D1/10 ,  C21D1/42 ,  C21D9/08 ,  H05B6/101 ,  Y02P10/253

Abstract: To heat a workpiece having a recess portion provided along a longitudinal axis of the workpiece, the workpiece is inserted into an induction heating coil, and the induction heating coil or the workpiece is along an axial direction of the workpiece. The induction heating coil has a conductor configured to surround the workpiece around the axis of the workpiece. The conductor has a protruding portion protruding inwardly to face the recess portion of the workpiece.

Abstract translation: 为了加热具有沿着工件的纵轴设置的凹部的工件，将工件插入到感应加热线圈中，并且感应加热线圈或工件沿着工件的轴向方向。 感应加热线圈具有构造成围绕工件的轴线围绕工件的导体。 导体具有向内突出以与工件的凹部对置的突出部分。

公开(公告)号：WO2013172481A3

公开(公告)日：2013-11-21

申请号：PCT/JP2013/064424

申请日：2013-05-17

Applicant: NETUREN CO., LTD.

Inventor： ONO, Tetsuya ,  SUGIMOTO, Masato ,  KIYOSAWA, Yutaka ,  AIBA, Toshihiro ,  OKA, Kazutomi ,  KOBAYASHI, Kunihiro ,  IKUTA, Fumiaki ,  KAWASAKI, Kazuhiro

IPC: H05B6/06 ,  H05B6/10

Abstract: An induction heating system includes induction heating apparatuses, each including a high-frequency current transformer, a low-frequency current transformer and a heating coil, a high-frequency input switch connected to the high-frequency current transformer, a low-frequency input switch connected to the low-frequency current transformer, a first power source to output a high-frequency electric power and a low frequency electric power, a second power source, a first power source output switch connectable to the first power source, a second power source output switch connectable to the second power source, and a switch controller. Each induction heating apparatus includes a heater controller to send a signal to the switching controller to turn on one of the first power source output switch and the second power source output switch, to turn off the other, and to switch on or off each of the high-frequency input switch and the low-frequency input switch.