PROBLEM TO BE SOLVED: To provide a mist device for a bathroom, preventing dirty water in a circulating heating circuit from back flow to the upstream side in a water supply circuit for mist.SOLUTION: This bathroom mist device for includes: a liquid-liquid heat exchanger 10 for heating water supplied through a mist water supply circuit 11 by a heat medium supplied from a heat source unit 2 through a circulating heating circuit 21 and a mist spray part 1 for spraying hot water in the mist water supply circuit 11 heated by the liquid-liquid heat exchanger 10 into a bathroom 4. A check valve 37 for preventing a backward flow in the mist water supply circuit 11 is provided on the upstream side of the liquid-liquid heat exchanger 10 of the mist water supply circuit 11, an opening and closing valve 32 for opening and closing the mist water supply circuit 11 is provided on the downstream side of the liquid-liquid heat exchanger 10, and the opening and closing valve 32 is set to open the valve simultaneously with the start of operation of the heat source unit 2 to start the supply of the heat medium to the liquid-liquid heat exchanger 10.COPYRIGHT: (C)2010,JPO&INPIT【課題】循環加熱回路内の汚水がミスト用給水回路内を上流側へ逆流しない浴室用ミスト装置を提供する。【解決手段】浴室用ミスト装置は、熱源機2から循環加熱回路21を通じて供給される熱媒体でミスト用給水回路11を通じて供給される水を加熱する液々熱交換器10と、前記液々熱交換器10で加熱された前記ミスト用給水回路11内の温水を浴室4内へ噴霧するミスト噴霧部1とを備える。前記ミスト用給水回路11の前記液々熱交換器10の上流側に、前記ミスト用給水回路11内の逆流を防止する逆止弁37を設け、前記液々熱交換器10の下流側に、前記ミスト用給水回路11を開閉する開閉弁32が設けられると共に、前記開閉弁32は、前記熱源機2の作動が開始され前記液々熱交換器10へ前記熱媒体の供給が開始されると同時に開弁するように設定される。【選択図】図3
