US 4,385,874 A · Rotary pump apparatus with plural abutting pumping segments

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.

Claims31

Dependent claims

A rotary pump apparatus with plural abutting pumping segments comprising:

a. a housing having an inner pumping chamber portion;
b. input means communicating with said chamber for allowing a fluid stream to be pumped to enter said chamber;
c. output means communicating with said chamber for discharging fluids from said chamber;
d. a plurality of separate abutting segments movably mounted within said chamber in a circulating rotary fashion, said segments during operation driving fluids from said input means through said chamber to said output means, each of said segments abutting at least two segments during pumping through said chamber;
e. powered driving means for circulating said plurality of segments in a rotary fashion within said chamber, said driving means comprising:
i. a rotary plate;
ii. a plurality of metal pegs fixedly attached to one surface of said plate;
iii. a shaft fixedly attached to a second surface of said plate, said shaft and plate each defining a common rotational axis;
iiii. a means for circulating the shaft.

6 more elements

A rotary pump apparatus with plural abutting pumping segments, comprising:

a. a substantially cylindrical wafer-shaped housing having a central portion with an inner elliptically shaped chamber;
b. a top and bottom sealing plates for sealing said chamber, at least one plate being adapted with a pair of input ports for allowing a passage of fluid into said chamber and further adapted with a pair of output ports for allowing a passage of fluid from said chamber;
c. four identical cylindrical segments for circulating within said chamber each of which communicates with the walls of the chamber while simultaneously communicating with at least two other segments at all times in the chamber for pumping said fluid into and out of said chamber;
d. powered drive assembly, comprising:
i. a rotor plate;
ii. four metal pegs fixedly attached to one surface of said plate for inserting loosely into the opening of said cylindrical segments and driving said segments to circulate around the inner elliptical wall of said chamber when the rotor plate is rotated;
iii. a shaft fixedly attached to a second surface of said plate, said shaft and plate each defining a common rotational axis;
iiii. a means for circulating said shaft;
e. a metal housing for encasing said shaft;
f. anti-jamming means on said housing for preventing dual rotation of said rotor plate and for providing pumping movement in one pre-determined direction, said anti-jamming means comprising at least in part a pair of pliable inserts mounted on the inner wall of said housing adjacent to said chamber.

7 more elements

A rotary pump apparatus with plural abutting pumping segments, comprising:

a. a cylindrical wafer-shaped housing providing an inner pumping chamber, said housing having coplanar face portions substantially perpendicular to the central axis of said cylindrical housing;
b. a pumping chamber disposed within said housing, said chamber being generally elliptical in shape and being symmetrically disposed within said housing about said axis;
c. a pair of circular cover plates attached during operation respectively to said pair of housing face portions, each of said plates during operation forming a seal with said housing and about said pumping chamber;
d. input means for supplying a source of fluid to be pumped to said chamber;
e. discharge means communicating with said chamber for discharging a fluid being pumped from said chamber;
f. a plurality of individual separate cylindrical segments disposed within said elliptical chamber, each of said segments communicating with at least two other segments, said segments being rotationally movable in an elliptical path about said axis during a pumping operation;
g. rotational power means being connectable during operation to said segments for moving said segments in an elliptical path within said elliptical chamber.

4 more elements

Dependencies are inferred from the claim text.

Rotary pump apparatus with plural abutting pumping segments

Life of this patent

Rotary pump apparatus with plural abutting pumping segments

Life of this patent

Abstract

Claims31