Coanda effect fish pump
OwnerPeter B. Lindgreninventor
Life of this patent
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Abstract
An improved Coanda effect fish pump that allows for improved pump performance with enhanced and unsymmetrical-irregularities features in circumferential flow gaps and orifice flutes that improve water flow distribution and pump performance. Design features improve fish quality during pumping and can be designed to remove sea ice from salmon. The features reduce spinning in the pump, correct for unsymmetrical input water pressure distribution, and reshape water velocities to more effectively remove sea lice.
Claims11
An improved Coanda effect fish pump for transporting live fish by induced flow, said pump comprising a housing having a primary intake for primary flow, a secondary intake for induced flow, a collector chamber for intermixing said primary flow and said induced flow, and an outlet for discharge, an orifice forming a primary flow path for said primary flow circumferentially with respect to an induced flow path of said induced flow, said orifice forming a circumferential flow gap having a space between said primary intake and said collector chamber, directing said primary flow at an acute angle to an axis defined by said induced flow, said orifice including flutes defined by spaced apart surface depressions formed in said external surface of said secondary intake;
- the improvement comprising an unsymmetrical gap or features to adjust water flow for removal of sea lice from fish.
Dependencies are inferred from the claim text.