Water Filter Screen With Flow Vanes To Reduce Head Loss

The patent applies local quality by creating different flow conditions at different locations of the filter media. The approach velocity is controlled to be substantially uniform across the entire filter media surface, while the discharge velocity varies along the length of the filter media. This localized optimization ensures consistent particle capture efficiency across all areas while preventing excessive particulate accumulation in any single region, thereby reducing overall head loss.

The patent employs parameter changes by actively controlling the approach velocity to remain substantially uniform across the filter media surface despite particulate accumulation. By maintaining constant approach velocity as a controlled parameter, the system compensates for decreasing surface area from clogging, preventing velocity increases that would otherwise occur and maintain stable filtration performance over time.

The patent applies local quality by creating different velocity conditions at different locations. The approach velocity perpendicular to the filter media is controlled to be low and substantially uniform to protect fish, while the discharge velocity parallel to the filter media varies along the length to maintain adequate flow rate. This localized velocity differentiation allows simultaneous achievement of fish protection and sufficient productivity.

The patent implements continuity of useful action by designing a cleaning system that operates continuously or semi-continuously rather than requiring periodic complete shutdowns. The uniform approach velocity distribution prevents severe clogging in any single area, allowing the filter to maintain operational status during cleaning operations or enabling more frequent, shorter cleaning cycles that minimize total offline time while maintaining particle removal efficiency.