Rotary expansible chamber devices – Working member has planetary or planetating movement – Non-metallic working member – cylinder or partition
Patent
1980-05-01
1983-05-31
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Non-metallic working member, cylinder or partition
418 61R, 418153, 418225, F04C 200, F04C 500
Patent
active
043858740
ABSTRACT:
A rotary pump apparatus with plural abutting pumping segments has a wafer-like housing with an inner elliptical pumping chamber with intake and discharge ports for a fluid flow. A plurality of identical fluid moving cylindrical segments are movably disposed within the pumping chamber in such a manner that each of the segments abuts at least two other segments within the chamber.
The segments rotate in a circular rotary fashion urging the fluid flow between the intake and discharge ports.
The apparatus is also provided with a rotor plate rotatably mounted on the housing and a central driven shaft fixedly attached to one surface of the rotor plate. The rotor plate has a series of drive pegs disposed on the surface opposite to that where the shaft is attached. The drive pegs loosely extend through the openings in the cylindrical segments, and when the rotor shaft is rotated by an external power source, the rotational movement is transmitted via the rotor plate to the drive pegs and then to the cylindrical segments urging them to rotate in a concentric fashion around the pegs and in a circular rotary fashion within the chamber.
The entire assembly of drive pegs and cylindrical segments is sealably enclosed in the housing by a pair of cover plates sealably fitted to the housing to enclose the inner chamber, which in the preferred embodiment would be elliptical.
In this preferred embodiment the volume of area between the cylindrical segments and the inner wall of the chamber can fluctuate during the rotation as the segments move in their elliptical path. The pump is so constructed that when the space is increased, a vacuum is created above the inlet ports and liquid is drawn into the chamber, and simultaneously, when the space is restricted between the cylindrical segments, the fluid is forced out of the chamber via the outlet ports.
REFERENCES:
patent: 1700038 (1929-01-01), Feuerheerd
patent: 1866761 (1932-07-01), Feuerheerd
patent: 2157141 (1939-05-01), Murray
patent: 3447476 (1969-06-01), Farris
patent: 3886764 (1975-06-01), Edwards
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