METHOD OF DETERMINING POSITIONAL RELATION BETWEEN HEATING COIL AND WORK

PROBLEM TO BE SOLVED: To provide a method of determining a positional relation between a heating coil and a work.SOLUTION: The method includes the steps of: detecting an output current from a high-frequency inverter 11 and a voltage generated at a heating coil 14; dividing the detected output curren...

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Bibliographic Details
Main Authors YO YAKU, KITAMURA TAICHI, IKUTA FUMIAKI
Format Patent
LanguageEnglish
Published 11.07.2013
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:PROBLEM TO BE SOLVED: To provide a method of determining a positional relation between a heating coil and a work.SOLUTION: The method includes the steps of: detecting an output current from a high-frequency inverter 11 and a voltage generated at a heating coil 14; dividing the detected output current by the detected voltage to obtain a load impedance; and, on the basis of whether the load impedance is between an upper and a lower threshold, determining whether a gap between the work 15 and the heating coil 14 is within an allowable range.
Bibliography:Application Number: JP20130083409