公开(公告)号：US5126522A

公开(公告)日：1992-06-30

申请号：US454422

申请日：1989-12-21

申请人： Keiichi Katayama ,  Mitsuo Kato ,  Mikio Hanamoto ,  Kazuya Tsurusaki ,  Kiyoshi Izumi ,  Mamoru Hiyama

发明人： Keiichi Katayama ,  Mitsuo Kato ,  Mikio Hanamoto ,  Kazuya Tsurusaki ,  Kiyoshi Izumi ,  Mamoru Hiyama

IPC分类号： C23C2/28 ,  C21D9/60 ,  H02M7/48 ,  H05B6/02 ,  H05B6/06

CPC分类号： C21D9/60 ,  Y02P10/253

摘要： An induction heating apparatus is disclosed which includes a high frequency power source having a leading phase angle setting circuit, which is supplied with a detection voltage signal from an output side of a high frequency inverter connected to a load circuit, to supply a leading phase angle signal to gates of thyristors of the inverter. The high frequency power source further includes a phase control circuit, provided after the voltage detection circuit, which is supplied with the detection voltage signal from the output side of the inverter to periodically control a phase of the detection voltage signal. The induction heating apparatus further includes a series inductor provided in between the power supply bus line connected to an induction heating coil wherein a magnetic member is provided to be inserted into and taken out of the inductor. A drive device is included for driving the magnetic member. The induction heating apparatus includes a solenoid coil serving as an induction heating coil to which a high frequency current is supplied and into which a steel plate passes to be heated by Joule heat produced by an eddy current generated in the steel plate. Furthermore, magnetic flux density alleviating apparatus is provided in the solenoid coil for alleviating magnetic flux concentrated in an edge portion of the steel plate.

公开(公告)号：US5317121A

公开(公告)日：1994-05-31

申请号：US947836

申请日：1992-09-21

申请人： Keiichi Katayama ,  Mitsuo Kato ,  Kazuya Tsurusaki ,  Mikio Hanamoto ,  Kazumasa Mihara ,  Takatoshi Eguchi

发明人： Keiichi Katayama ,  Mitsuo Kato ,  Kazuya Tsurusaki ,  Mikio Hanamoto ,  Kazumasa Mihara ,  Takatoshi Eguchi

IPC分类号： H05B6/10 ,  H05B6/02 ,  H05B6/36 ,  H05B6/44

CPC分类号： H05B6/104 ,  H05B6/36

摘要： An induction heating apparatus has a coil or coils which can be opened without using electrical contacts. One continuous electric current passageway is formed by a first coil section, a second coil section, a first connecting conductor and a second connecting conductor. By feeding electric power to this electric current passageway and passing an object through a space at the central portion of the coil sections, the object is induction heated. A gap is provided between the first connecting conductor and the second connecting conductor, or the respective connecting conductors can be opened and closed relative to one another to vary the size of the space therebetween. The object to be heated is carried into the space at the central portion of the coil and is carried out therefrom through the gap or the space between the conductors.

摘要翻译： 感应加热装置具有可以在不使用电触点的情况下打开的线圈或线圈。 一个连续的电流通道由第一线圈段，第二线圈段，第一连接导体和第二连接导体形成。 通过将电力供给到该电流通路并使物体通过线圈部的中央部的空间，对该物体进行感应加热。 在第一连接导体和第二连接导体之间提供间隙，或者相应的连接导体可相对于彼此打开和关闭以改变它们之间的空间尺寸。 被加热物被运送到线圈中心部分的空间，并通过间隙或导体之间的空间从其中进行。