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Water treatment system for swimming pools and potable water

  • US 4,752,401 A
  • Filed: 02/26/1987
  • Issued: 06/21/1988
  • Est. Priority Date: 02/20/1986
  • Status: Expired due to Fees
First Claim
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1. A device for use in purifying a substantial flow of water, comprising:

  • ultraviolet lamp means having a generally tubular exterior surface and electrical terminals at each end thereof;

    a generally tubular casing having a longitudinally extending body portion surrounding said lamp means;

    said casing also having an inlet extending from the body portion adjacent one end of said lamp means and an outlet extending from the body portion adjacent the other end of said lamp means,at least one end of said lamp means, with the respective terminal, protruding through said casing;

    water-tight removable seals between said casing and said lamp means where lamp means protrudes through said casing,said casing and said seals being of material resistant to degradation by UV radiation;

    the interior of said casing and the exterior of said lamp means together defining a flow passage of generally annular cross-section for accomodating a substantial flow of water through said passage from said inlet to said outlet and passing directly over and around said exterior surface of said lamp means;

    ultrasonic tranducer means mounted in said casing to direct ultrasonic energy at said surface of said lamp means to loosen deposited material from said surface for entrainment into the flow of water, whereby said lamp surface is cleaned to minimize attenuation of UV radiation therefrom due to such deposited material; and

    means defining an ionization chamber connected to pass the water flowing through said flow passage and at least one copper element housed in said chamber and presenting a substantial surface to the water flow providing a source of algae controlling copper ions into the water.

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