Water purification system utilizing ultraviolet radiation
First Claim
1. A water purification system utilizing ultraviolet radiation comprisingan elongated outer enclosure having an inlet and an outlet for the passage of water,a transparent cylindrical enclosure mounted coextensively within said outer enclosure to define a passageway for water therebetween,ultraviolet radiation means mounted within said transparent cylindrical enclosure,first and second annular members mounted for rotation at opposite ends of said transparent cylindrical enclosure,a plurality of metallic wiper blades extending parallel to the longitudinal axes of said cylindrical enclosures and connected between said first and second annular members within said passageway in position to have an edge portion in wiping contact with the outer surface of said transparent cylindrical enclosure, andmeans to operate said wiper blades around said transparent enclosure to continually remove sediment and impurities deposited on the surface by the water passing through said passageway, said means to operate said wiper blades comprising a drive motor coupled to one of said annular members,whereby the efficiency of optical transmission of the ultraviolet radiation through said transparent enclosure will be maintained at an optimum value.
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Accused Products
Abstract
A water purification system utilizes an ultraviolet generator encased in a quartz cylinder to irradiate water flowing through a passageway defined by the surface of the quartz cylinder and an outer casing. An ultraviolet sensor and control circuit shuts off the water when the ultraviolet radiation level drops below a predetermined level. A flow-sensing switch controls an ultraviolet dimming circuit which reduces the generator output when water is not flowing. Water flow is controlled by reduced annular spaces at the inlet and outlet of the passageway and the quartz cylinder and the ultraviolet sensor are kept free of sedimentation by wiper blades.
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Citations
7 Claims
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1. A water purification system utilizing ultraviolet radiation comprising
an elongated outer enclosure having an inlet and an outlet for the passage of water, a transparent cylindrical enclosure mounted coextensively within said outer enclosure to define a passageway for water therebetween, ultraviolet radiation means mounted within said transparent cylindrical enclosure, first and second annular members mounted for rotation at opposite ends of said transparent cylindrical enclosure, a plurality of metallic wiper blades extending parallel to the longitudinal axes of said cylindrical enclosures and connected between said first and second annular members within said passageway in position to have an edge portion in wiping contact with the outer surface of said transparent cylindrical enclosure, and means to operate said wiper blades around said transparent enclosure to continually remove sediment and impurities deposited on the surface by the water passing through said passageway, said means to operate said wiper blades comprising a drive motor coupled to one of said annular members, whereby the efficiency of optical transmission of the ultraviolet radiation through said transparent enclosure will be maintained at an optimum value.
Specification