| 摘要 |
PROBLEM TO BE SOLVED: To prevent opening of a mist valve from being prohibited because the pressure of water enclosed between a water supply valve and the mist valve excessively rises when the water supply valve is closed after a check on leak with the rise of water temperature during the preheating operation before the start of the next mist operation in a mist sauna device, which sprays hot water from a mist nozzle by heating water to be fed to the mist nozzle 16 by a heating medium circulating in a mist heating medium circulating pathway 19 in a liquid-liquid heat exchanger 18, and for which the check on leak for determining presence of leak within the liquid-liquid heat exchanger is executed based on the change in temperature detected by a heat medium temperature sensor 15 after opening the water supply valve 21 by temporarily opening the water supply valve 21 after closing the mist valve 23 and the water supply valve 21 and terminating the mist operation. SOLUTION: If the temperature detected by a mist temperature sensor 24 is lower than a prescribed reference temperature when a command to terminate the mist operation is output, execution of the check on leak is prohibited and the water supply valve 21 is closed ahead of the mist valve 23. COPYRIGHT: (C)2011,JPO&INPIT
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