Top suction sump pump having bottom suction impeller
AssigneeWayne/Scott Fetzer Company
InventorHerbert G. Pattison
Life of this patent
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Abstract
A submersible sump pump includes a pump housing having a volute chamber in which a centrifugal impeller rotates about a vertical axis. The impeller draws water in axially from below from a fluid passage having a closed bottom, the fluid passage having a plurality of inlets located about the perimeter of the pump housing at an elevation above the level of the outlet from the fluid passage to the volute chamber. Thus, a bottom suction impeller arrangement is provided that prevents debris from the floor of the sump being drawn into the pump.
Claims20
A sump pump for pumping a standing fluid comprising:
- a pump housing defining a volute chamber;
- a centrifugal impeller mounted within said volute chamber for rotation about a substantially vertical axis;
- an electric motor having a substantially vertical driven shaft extending into said volute chamber in driving engagement with said centrifugal impeller;
- said pump housing further defining a fluid chamber having an outlet opening communicating with said volute chamber axially below said centrifugal impeller, and a plurality of inlet openings for receiving standing fluid therethrough, said inlet openings located on said pump housing and communicating exteriorly of said pump housing entirely above a horizontal plane passing through said outlet opening of said fluid chamber.
A sump pump for pumping a standing fluid comprising:
- a pump housing including a volute-shaped chamber having an axial inlet therebelow and a tangential outlet, and a fluid chamber having a plurality of peripheral inlets for receiving standing fluid therethrough, said peripheral inlets located on said pump housing and communicating exteriorly of said pump housing at an elevation entirely above said axial inlet, said fluid chamber communicating with said axial inlet of said volute-shaped chamber;
- a centrifugal impeller disposed in said volute-shaped chamber for rotation about a substantially vertical axis;
- and
- motor means for rotating said centrifugal impeller.
Dependencies are inferred from the claim text.