Rotary kinetic fluid motors or pumps – Runner has spirally arranged blade or fluid passage
Patent
1992-06-30
1993-08-31
Look, Edward K.
Rotary kinetic fluid motors or pumps
Runner has spirally arranged blade or fluid passage
415 92, 415116, 416181, 416183, F04D 100, F04D 2918
Patent
active
052403726
ABSTRACT:
A centrifugal pump for a first fluid has a housing with an inlet and includes a rotatable impeller which is adjacent to a stationary plate. The inlet communicates with a space defied between the impeller and the plate. An outlet adjacent to the periphery of the impeller also communicates with the space. The space is divided into a plurality of zig-zag pumping passages which extend from the inlet to the periphery of the impeller. Each passage has undulating sidewalls defined by complementary undulations in the facing surfaces of the plate and the impeller. Each passage also has endwalls defined by vanes mounted to the impeller. The vanes generally conform to the undulations in the impeller and are also complementary to the undulations in the plate. An injection port in the plate communicates with the space downstream of the inlet at a point where the lowest absolute pressure within the passages exists. A second fluid may be injected through the port and into the passages. The vapor phase of the first fluid, which is present in the passages because of the low absolute pressure, is condensed and compressed upon contact with the second fluid and is thereafter centrifugally moved to the outlet. Depressions downstream of each pressed in the undulating surfaces of both the plate and the impeller encourage the establishment of vortices therein, the vortices encouraging and expediting fluid flow along the passages.
REFERENCES:
patent: 1077520 (1913-11-01), Gentil
patent: 3663117 (1972-05-01), Warren
patent: 3907456 (1975-09-01), Krienke
patent: 4586877 (1986-05-01), Wantanabe et al.
patent: 4776758 (1988-10-01), Gullichsen
patent: 5039320 (1991-08-01), Hoglund et al.
patent: 5137418 (1992-08-01), Sieghartner
Bain John N.
Kaufmann John D.
Lee Michael S.
Lillie Raymond J.
Look Edward K.
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