초록 ▼

An aerator of this invention comprised of a housing, a motor driven cylindrical tube having an open distal end extending through the housing, and propeller blades attached to the distal end of the cylindrical tube. The surrounding ambient air enters the housing and is compressed by pairs of opposing

An aerator of this invention comprised of a housing, a motor driven cylindrical tube having an open distal end extending through the housing, and propeller blades attached to the distal end of the cylindrical tube. The surrounding ambient air enters the housing and is compressed by pairs of opposing compression blades located therein, with the compressed air being drawn through inlet slots into a central conduit formed by the cylindrical tube, and injected into the water through the open distal end thereof. The aerator may also have optional feed vanes to direct the compressed air through the inlet slots, and fixed fins to redirect the flow of the water past the propeller blades.

대표청구항 ▼

In an aerator of the type used for agitating a liquid having a surface and for mixing an ambient gas with said liquid, said aerator having a housing, a hollow air supply shaft and a propeller means connected to said shaft being rotatable about a longitudinal axis of rotation, and wherein the propell

In an aerator of the type used for agitating a liquid having a surface and for mixing an ambient gas with said liquid, said aerator having a housing, a hollow air supply shaft and a propeller means connected to said shaft being rotatable about a longitudinal axis of rotation, and wherein the propeller means draws water along said housing toward the distal end of the aerator in a generally longitudinal flow path, said aerator being mountable such that said distal end is positioned below said surface of said liquid, the improvement comprising: one or more helical fins, said helical fins being fixedly connected to the housing adjacent the propeller means and extending radially outward therefrom, said helical fins being positioned on the opposing side of the propeller means from a distal end of the aerator, such that said helical fins contact the liquid drawn along the housing toward the propeller and redirect the generally longitudinal flow path of the liquid prior to the liquid impinging upon the propeller means.