Patent ID: 8282879

Claim:
A fluid purification device comprising: a device main body including: an inner tube composed of a non-conductive material; an outer tube composed of a non-conductive material, said outer tube being spaced apart from said inner tube by a predetermined distance and being arranged concentrically with respect to said inner tube, each of said inner tube and said outer tube being transparent or semi-transparent to ultraviolet light; and a conductive member attached to a part of an inner surface of said outer tube to form an electrode; a photocatalyst material of titanium or titanium alloy located within said inner tube; and an ultraviolet light source arranged to irradiate an outer peripheral surface of said outer tube with ultraviolet light; wherein said device main body is configured so that, when a voltage is applied to said electrode, a discharge in a space between said inner tube and said outer tube is created using a liquid flowing within said inner tube as an earth electrode so as to cause a gas flowing through said space to react to generate ozone; wherein said device main body is configured to allow the ozone to mix with the liquid so as to purify the fluid; and wherein said photocatalyst material is activated by the ultraviolet light received from the discharge in said space and from said ultraviolet light source.