Ribbon drive pumping apparatus and method with added fluid

Details Ribbon drive pumping apparatus and method with added fluid Ribbon drive pumping apparatus and method with added fluid

2006-03-28

2006-03-28

Nguyen, Hoang (Department: 3748)

Rotary kinetic fluid motors or pumps

Runner has spirally arranged blade or fluid passage

Extending along runner axis

C415S073000, C415S176000

Reexamination Certificate

active

07018170

ABSTRACT:
A ribbon drive pumping apparatus and method for substantially incompressible fluids, such as liquids, is disclosed. The pump has an extended tube having an intake at a first end and an outlet at a second end. A ribbon formed of helical coils is mounted in the tube for rotation and the frequency of the coils decreases from the first end to the second end of the tube. Substantially incompressible fluid is collected at the first end, an axial component of velocity is increased via the rotating ribbon, and the substantially incompressible fluid is ejected from the second end to provide pumping of the liquid. Additional fluid is added to an interior portion of the pump, preferably to a low pressure region, for various purposes such as mixing, cavitation prevention, increased throughput, etc.

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