Turbine drive apparatus and method suited for suction...

Details Turbine drive apparatus and method suited for suction... Turbine drive apparatus and method suited for suction...

2007-11-13

2007-11-13

Spisich, Mark (Department: 1744)

Brushing, scrubbing, and general cleaning

Submerged cleaners with ambient flow guides

C015S387000, C210S167150, C415S202000

Reexamination Certificate

active

11509219

ABSTRACT:
A method and apparatus for enabling a pool cleaner to travel through a water pool to collect dirt and other debris from the water and/or pool containment wall. The cleaner defines a suction passageway having an inlet open to pool water and an outlet adapted to be coupled via a flexible hose to the suction side of an electrically driven pump. A resulting suction flow, from the inlet to the pump, functions to (1) carry dirt and other debris to a filter and (2) to drive a turbine for propelling the cleaner. In accordance with the invention, the suction passageway inlet includes an orifice defining a physical flow area A1and configured to create an “effective” flow area A2smaller than A1, downstream from the orifice. The small effective flow area A2creates a water flow of sufficient velocity to efficiently drive the turbine whereas the larger physical flow area A1permits debris to pass more readily.

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