Photoscience Japan Corporation

Eiichi Ishiyama

An ultraviolet light irradiation apparatus providing combined mechanical and chemical cleaning of light irradiation tubes for removing radiation blocking precipitates from the surface of the tubes. A scraper ring is fitted to the outside of each of the tubes and includes a chamber for receiving a relatively small quantity of cleaning solution. The scraper rings are reciprocated in a sliding action along the tubes which action synergistically acts with the cleaning solution to remove precipitates from the tube surface including fine particles lodged in concave pits in the tube surface.

Ultraviolet ray irradiation equipment having scraper rings fitted to light transmission tubes

A UV irradiation apparatus for treating fluids employs light transmission tubes having UV lamps therein and a smooth fluorocarbon resin layer over the outside surface of the tubes. For example, a Teflon.RTM. sheath or film over the outside surface of the tubes may be employed. A tightly fitted scraper ring with an attached cleaning fluid chamber reciprocates over the coated tubes to clean contaminants from the surface thereof, which contaminants would otherwise impair the UV irradiation ability of the lamps within the tubes.

Growing community of inventors

Hachioji, Japan

Eiichi Ishiyama