Patent ID: 6454952
Filing Date: 2002-09-24
Classification: A61L,C02F

Abstract:
Apparatus for treating fluid with radiant energy from an ultraviolet lamp, said apparatus comprising:(a) an outer housing comprising first and second ends and an elongated hollow cylindrical portion extending between said ends peripherally around a longitudinal axis of said cylindrical portion; (b) a hollow cylindrical inner housing for housing said lamp, said inner housing being supported by said ends and extending coaxially within said cylindrical portion of said outer housing so as to define an elongated annular chamber between said housing, at least a substantial portion of the length of said inner housing being formed from material sufficiently transmissible to permit ultraviolet energy radiating from said lamp to pass through said inner housing into said chamber and thereby irradiate fluid flowing through said chamber; (c) a fluid inlet conduit extending through said first end from a fluid inlet port to said chamber for receiving said fluid from an external source of fluid and directing said fluid to said chamber; (d) a fluid outlet conduit extending through said second end from said chamber to a fluid outlet port for discharging said fluid from said chamber; and, (e) a single helical shaped input fluid flow guide disposed within said chamber and extending longitudinally therein from said first end for a relatively short distance, said input fluid flow guide for imparting input spiral flow momentum to all of said fluid upon entry to said chamber from said fluid inlet conduit.