PROBLEM TO BE SOLVED: To provide a fluid heating device capable of heating a fluid without comprising a tank for heating the fluid, and dental wax washing equipment.SOLUTION: A fluid heating device 2 for heating a fluid comprises a conductive pipe coil 7 that allows the fluid to flow through its inside, and a transformer T that is connected to the pipe coil 7 and that has a secondary-side coil T2 for passing a secondary-side electric current through the pipe coil 7.COPYRIGHT: (C)2015,JPO&INPIT【課題】流体を加熱するためのタンクを備えることなく、流体を加熱することができる流体加熱装置、及び歯科用蝋洗浄装置を提供する。【解決手段】流体を加熱する流体加熱装置2は、内部に流体が流れる導電性のパイプコイル7と、パイプコイル7と接続され、パイプコイル7に二次側電流を流す二次側コイルT2を有するトランスTとを備えた。【選択図】図2