Abstract: Two assembled bodies arranged as a pair are disposed around the outside periphery of a pipe to activate water flowing in the pipe. Each of the assembled bodies is composed of a cover and fluid activating bodies integrally fixed in the cover with an epoxy resin. Each of the fluid activating bodies is composed of a black radiation sintered body made by sintering the powder of a plurality of kinds of metal oxides at high temperature and an electromagnetic wave converging body for converging the electromagnetic wave radiated from the black radiation sintered body to a predetermined wavelength. The two covers are disposed around the outside periphery of the pipe, and fixing portions formed on both the sides of the covers are integrally fixed by fixtures, respectively.

Abstract: The object of the invention is to provide a water-circulating sterilizer that uses no chlorine-base bactericidal agents, has no effect on the human body with no change of water quality, with no running cost and completely free from maintenance while effective sterilization is possible within shorter time. The invention provides a water-circulating sterilizer disposed in a pipeline of circulating water for sterilizing Legionella pneumophila surviving in circulating water, wherein plural sets of a first, second and third alloy plates are sequentially disposed from a water inflow port, the first alloy plate comprises an alloy containing at least copper and tin, the second alloy plate comprises an alloy containing at least silicon and titanium, and the third alloy plate comprises an alloy containing at least iron, molybdenum and manganese.

Abstract: Two assembled bodies arranged as a pair are disposed around the outside periphery of a pipe to activate water flowing in the pipe. Each of the assembled bodies is composed of a cover and fluid activating bodies integrally fixed in the cover with an epoxy resin. Each of the fluid activating bodies is composed of a black radiation sintered body made by sintering the powder of a plurality of kinds of metal oxides at high tempearture and an electromagnetic wave converging body for converging the electromagnetic wave radiated from the black radiation sintered body to a predetermined wavelength. The two covers are disposed around the outside periphery of the pipe, and fixing portions formed on both the sides of the covers are integrally fixed by fixtures, respectively.