| 摘要 |
A fluid disinfection apparatus 10 comprises a disinfection chamber 12 throug h which fluid to be disinfected flows, and an ultra-violet (UV) lamp 14, operable to output UV light at a germicidal wavelength. First and second fluid inlets 18, 20 and first and second fluid outlets 22, 24 are selectively opened to define a fluid flow pa th through the disinfection chamber 12. Cleaning apparatus 16 is provided on the UV lam p 14 and comprises a cleaning head 42, a drive plate 46 and four vanes 48. To cle an the UV lamp 14, a fluid flow path from the first fluid inlet 18, through the disinfection chamber 12 to the second fluid outlet 24 is defined. Fluid entering the disinfection chamber 12 engages the drive plate 16 and vanes 48, thereby driving the cleaning apparatus 16 along the UV lamp 14 and cleaning the UV lamp 14.
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