ULTRAVIOLET IRRADIATION DEVICE

摘要

According to an embodiment, an ultraviolet irradiation device includes a barrel, an inflow pipe, an outflow pipe. An ultraviolet irradiation tube is placed through the barrel. The ultraviolet irradiation tube irradiates an inflow of water to be treated with ultraviolet light. The water to be treated flows into the barrel through the inflow pipe. The water to be treated flows out of the barrel through the outflow pipe. The inflow pipe and the outflow pipe are arranged to allow the water to be treated to form into a swirl flowing along an inner wall of the barrel.