PROBLEM TO BE SOLVED: To enable the uniform and rapid thawing of a heated object such as a frozen food while suppressing partial electric field concentration on the surface of the heated object such as the frozen food.SOLUTION: In a high-frequency induction heating method in which the heated object is heated by electrodes disposed opposite to each other, at least one side heating electrode is constituted of an overall heating electrode and a partial heating electrode, and the overall heating and partial heating are simultaneously performed while controlling the electric field strength to the surface of the heated object and an inner surface part by controlling the amount of air gap in both electrodes.COPYRIGHT: (C)2012,JPO&INPIT【課題】冷凍食品等の被加熱物表面への部分的な電界集中を抑制しながら冷凍食品等の被加熱物を均一に且つ急速解凍を可能とする。【解決手段】対向に配置された電極にて被加熱物を加熱する高周波誘電加熱方法であって、少なくとも一方側の加熱電極が、全体加熱電極と部分加熱電極で構成され、両電極のエアギャップ量を制御することにより、被加熱物表面と内面部への電界強度をコントロールしながら全体加熱と部分加熱を同時に行う。【選択図】図1
