| 摘要 |
PCT No. PCT/JP96/02665 Sec. 371 Date Sep. 11, 1998 Sec. 102(e) Date Sep. 11, 1998 PCT Filed Sep. 17, 1996 PCT Pub. No. WO97/11578 PCT Pub. Date Mar. 27, 1997The present invention relates to a temperature controller used for an electromagnetic induction heating apparatus provided with a heating element made of magnetic material, and prepared in a fluid passage. A coil is prepared in the perimeter of the heating element and a high frequency electric current generator for the coil. The temperature controller comprises an electric current detection unit measuring the electric current flowing from the high frequency electric current generator to the coil and detecting that the temperature of magnetic material forming the heating element reaches in the vicinity of the magnetic transformation temperature, and an electric current restrictive unit limiting the electric current flowing to the coil based on the electric current detection unit. When the temperature of the heating element reaches in the vicinity of the magnetic transformation temperature, the electric current detection unit detects the rising electric current and the electric current restrictive unit limits the further rising electric current.
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