PROBLEM TO BE SOLVED: To provide a sauna apparatus which can prevent the freezing of all of piping so arranged as to pass water through it during the sauna operation period without being restricted by the troublesome arrangement of the piping.SOLUTION: The sauna apparatus 7 is provided inside with: an outside temperature sensor 6 for detecting the temperature outside the apparatus； a water supply circuit 8 for supplying water for spraying； a solenoid valve 9 as a switching means for controlling the passage of water； a heat source unit 12 connected to a plate type heat exchanger 10 as a heating means for heating feed water with a hot water circuit 11； and a nozzle 14 ahead of the solenoid valve 9 as a spraying means for spraying water to a spraying chamber 13. The water left in the spraying chamber 13 is discharged by a drain means 4 and also, a fan motor 5 is provided for conveying the air humidified by the spraying action in the spraying chamber 13 to a bath room. When the temperature which may cause the water in the water supply part 1 to be frozen is detected by the outside temperature sensor 6, the solenoid valve 9 makes the water in the water supply part 1 flow, thereby preventing its freezing.COPYRIGHT: (C)2007,JPO&INPIT【課題】サウナ装置において、配管の引き回しの制約がなく、サウナ運転時に通水する全ての配管に対して凍結防止を行うことができるサウナ装置の提供を目的とする。【解決手段】機器内に、機器の外部の温度を検知する機外温センサー６と、噴霧用の水を供給する給水回路８と、通水を制御する開閉手段としての電磁弁９と、給水を加熱する加熱手段としてのプレート式熱交換器１０と温水回路１１で接続する熱源機１２と、電磁弁９の先に噴霧室１３に水を噴霧する噴霧手段としてのノズル１４を設け、噴霧室１３の残水は排水手段４により排水され、また噴霧室１３で噴霧により加湿された空気を浴室に搬送するファンモーター５を備え、機外温センサー６により給水部１内の水が凍結する温度を検知したときに、電磁弁９によって給水部１内の水を流して凍結防止をする構成としたサウナ装置７を得られる。【選択図】図１
