| 摘要 |
The subject matter of the invention is a flat diffuser for changing the flow cross section in a flow conduit, preferably for the inlet and outlet zone of UV disinfection devices for drinking water, water for industrial use or sewage water with a square or rectangular flow cross section. High-performance UV disinfection devices inevitably lead to the arrangement of UV radiators in square or rectangular UV radiator grid s transversally or longitudinally to the flow direction. In closed UV disinfection devices of high flow rates the inlets and outlets have round cross sections like the arriving piping. It is necessary to achieve there a transition from the arriving round inlet cro ss section to the completely differently shaped rectangular inlet cross section of the radiati on chamber. A flat diffuser according to the inventive idea is helpful in the solution of this far from simple hydraulic problem and can lead to better hydraulic conditions in the radiation chamber and to a shorter overall length of the inlet and outlet zone and simplify its production.
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