UV liquid steriliser

摘要

A fluid treatment apparatus particularly for sterilizing drinks comprises an elongate tubular duct (110) and an elongate UV light source (111) extending longitudinally of the duct (110). The fluid flows longitudinally of the duct (110) in a thin annular low passage (114) which extends around the UV light source (111). A mixing device (112) disposed between adjacent longitudinal portions of the duct (110) for diverts all of the fluid flowing along a first portion of the passage (114) through fluid mixing means (113,116) in the device (112) and returns the mixed fluid to a second portion of the passage (114). Micro-organisms in the thin flow of fluid are killed as they come within close proximity of the light source (111). The mixing device (112) causes all of the flow to be thoroughly mixed and returned to the flow passage (114). The provision of a plurality of mixing devices along the length of the duct (110) increases the likelihood that all microorganisms receive a sufficient lethal dose of UV radiation.

主权项

1. A fluid treatment apparatus comprising an elongate tubular duct having a fluid inlet and a fluid outlet at opposite ends thereof an elongate source of UV radiation extending longitudinally of said elongate tubular duct, and a mixing device disposed between adjacent longitudinal portions of the duct diverting all of the fluid flowing along a first one of said portions of the duct through a fluid mixer in the mixing device and for returning the mixed fluid to a second one of said portions of the duct.