WATER STERILIZING APPARATUS AND BATH HOT WATER CIRCULATING APPARATUS EQUIPPED THEREWITH

摘要

PROBLEM TO BE SOLVED: To suppress the discharge of bacteria belonging to the genus Legionella propagated within the functional part of the filter device arranged to the circulating passage to the outside of the circulating passage in a bath hot water circulating apparatus. SOLUTION: In a bath hot water circulating apparatus 2 wherein the water sent under pressure by a water sending means 5 flows through the circulating passage connecting the water suction part 4a and jet part 4b provided to a bathtub 1, an ultraviolet lamp is provided to the circulating passage 4 so as to be housed in a container and a product of one pass time of water through the water passage in the container and luminous intensity of ultraviolet radiation is set to 10-100μwsec/cm<2> .