| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet irradiation device which can easily detect when a lamp sleeve is damaged. SOLUTION: An ultraviolet irradiation device is used which includes ultraviolet lamps 7a-7f for irradiating water to be treated 2 flowing through a passage in a lamp housing 4 with ultraviolet rays, lamp sleeves 6a-6f provided in a region contacting with the water to be treated 2 so as to cover the ultraviolet lamps 7a-7f respectively, flange covers 20a, 20b inserted and connected to both ends of the lamp sleeves 6a-6f respectively, and a damage detection sensor for detecting the water to be treated 2 when the lamp sleeves 6a-6f are damaged and the water to be treated 2 flows into the flange covers 20a, 20b through insides of the lamp sleeves 6a-6f. COPYRIGHT: (C)2011,JPO&INPIT |
