PROBLEM TO BE SOLVED: To provide a fluid material heater using induction heating which has a high heating efficiency in spite of a small size.SOLUTION: The heater comprises a fluid material passage 11 including straight pipes 12 of a conductive metallic material disposed in parallel to each other through a clearance and U-shaped connecting paths 13 disposed on one side and the other side of each straight pipe 12 to serially connect all the straight pipes 12, the passage 11 forming one flow passage having an inlet and an outlet as the whole and an induction coil 20 wound so as to surround all the straight pipes 12 to carry high frequency induction current to each of the straight pipes 12.COPYRIGHT: (C)2008,JPO&INPIT【課題】小型で高い加熱効率を有する誘導加熱を用いた流動物加熱装置を提供する。【解決手段】隙間を有して平行に配置され導電性を有する金属材料からなる直管12と、各直管12の一方側および他方側にあって、全ての直管12を直列に連結するU字状連結路13とを備え、入口および出口を有して全体が一つの流路を形成する流動物通路11と、複数の直管12の全てを取り囲むように巻回され、直管12の各々に高周波誘導電流を流す誘導コイル20とを有する。【選択図】図1
