INDUCTION HEATING APPARATUS

The device for heating apparatus for heating steel plate comprising 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 const...

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Bibliographische Detailangaben
Hauptverfasser:	HANAMOTO, MIKIO, KATAYAMA, KEIICHI, HIYAMA, MAMORU, KATO, MITSUO, IZUMI, KIYOSHI, TSURUSAKI, KAZUYA
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CHEMICAL SURFACE TREATMENT CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	The device for heating apparatus for heating steel plate comprising 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 constituting the high frequency inverter. A phase control circuit is provided in the way of a voltage detection circuit which is supplied with the detection voltage signal from the output side of the high frequency inverter to control a phase of the detection voltage signal periodically. A series inductor is provided in the form of a power supply bus line connected to an induction heating coil, a magnetic member provided to be able to be inserted into and taken out from the series inductor, and a drive device which drives the magnetic member to be inserted into and taken out from the inductor. The frequency of the power source used in the induction heating is a parallel resonance frequency of an inductance of the induction heating coil and a capacitance of a condenser connected in parallel with the coil and provided in the power source, while since the inductance of the inductor is varied by inserting a ferrite core driven by the drive device into and taking out from the inductor, the parallel resonance frequency is varied and the vibration of the plated steel plate is varied periodically. A magnetic flux density alleviating means disposed in a solenoid coil constituting the induction heating coil for alleviating the magnetic fluxes concentrating in edge portions of the steel plate.