Rotary kinetic fluid motors or pumps – With means for controlling casing or flow guiding means in...
Patent
1987-06-01
1988-11-01
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
With means for controlling casing or flow guiding means in...
415 4, 415215, 416186R, F03D 106
Patent
active
047815230
ABSTRACT:
A fluid energy converter having a squirrel-cage-like rotor in which blades peripherally distributed about a horizontal axis of rotation are in a plane generally parallel to the axis of rotation. An entry at one end of the rotor is arranged to face the oncoming fluid for receipt thereof. A contoured deflector on the interior of the rotor forms an annular path or duct for redirecting the predominantly axial flow of fluid from the entry outwardly to the peripherally distributed blades and through the slots therebetween. The total area of the slots exists through which the fluid passes is preferably made less than either the entry area of the cross-sectional area of the duct leading to the blades such that the blades act as a constriction in the fluid passageway, somewhat as a venturi restriction in the flow path. The high efficiencies obtained in operating the converter are believed due to a jet action of the air released from the venturi slots between blades in addition to the force of reduced pressure produced on each blade to rotate the rotor. A ring about the entry is aerodynamically shaped to cause fluid passing over the entry to direct the fluid exiting from the blades so that it follows a greater diameter aerodynamic aft fairing structure of slightly greater diameter than the entry ring to promote greater efficiency of operation of the unit. Both air and liquid driven blading arrangements are disclosed. A second embodiment of the invention incorporates blades angled upwardly from the axis of rotation but with a directional component predominantly parallel to the axis.
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Powell Jr. Everette A.
Schroeder Charles F.
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