Rotary pressure transfer device with improved flow

Details Rotary pressure transfer device with improved flow Rotary pressure transfer device with improved flow

2011-08-16

2011-08-16

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

C415S092000, C415S095000, C415S116000, C415S117000

Reexamination Certificate

active

07997853

ABSTRACT:
A rotary pressure transfer device utilizes a multi-channel, generally cylindrical rotor (15) that revolves with its flat end faces juxtaposed with flat end surfaces of a pair of flanking end covers (19, 21) in which inlet and outlet passageways are provided. The design is such that there are only oblique ramps (65) in the passageways on the high pressure side which create directional flow of liquid to cause rotor revolution in the desired direction. Passageways (27a, 27b) on the low pressure side may be shaped so that there is essentially axial or longitudinal flow entry and discharge of liquid between the channels and the passageways, or passageways (71) may be constructed to create directional flow that slightly retards rotor revolution in such desired direction.

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WIPO, “Written Opinion of the International Searching Authority” dated Apr. 13, 2009 issued in corresponding International Application No. PCT/US2008/078961 (3 pages).

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