| abstract |
(57) [Summary] [Purpose] Bathrooms, baths, swimming pools and the like, Filtration of hot and cold water that circulates through a boiler, passing through external pipes, and negatively ionizes it to prevent oxidation, To clean. [Constitution] By installing a downward laser pulse irradiation device in the upper space of the circulating water / water filtration container, immersing the filtration device filled with tourmaline ore in hot water at the corresponding position, and installing the filter while irradiating the laser pulse Purifies the water while negatively ionizing it. |