Ribbon drive pumping apparatus and method with added fluid
OwnerJonathan B. Rosefskyinventor
Life of this patent
Estimating the term…
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.
Claims16
A pumping apparatus for substantially incompressible fluids comprising:
- a tube having an intake at a first end and an unobstructed outlet at a second end;
- an axial shaft inside said tube;
- at least one ribbon having an inner edge mounted to said shaft, said ribbon being formed of coils extending in a helical manner from the first end to the second end of the tube, wherein a frequency of coils per unit length of tube decreases from the first end to the second end of the tube;
- drive means for rotating said shaft and ribbon so as to pump said substantially incompressible fluid from said first end to said second end;
- and
- means for adding fluid to an interior portion of the pumping apparatus.
A pumping method for substantially incompressible fluids comprising:
- providing a tube having a substantially constant diameter intake at a first end, and an outlet at a second end;
- rotating an axial shaft within said tube and at least one ribbon having an inner edge mounted to said shaft so as to:
- collect substantially incompressible fluid at the first end;
- increase an axial component of velocity of the substantially incompressible fluid with the rotating ribbon;
- and
- eject substantially incompressible fluid from the second end to pump said liquid,
- wherein said ribbon is formed of coils extending in a helical manner from the first end to the second end of the tube,
- wherein a frequency of coils per unit length of tube decreases from the first end to the second end of the tube, and
- wherein fluid is added to an interior portion of the pumping apparatus.
Dependencies are inferred from the claim text.