US 2042784 A
Description (OCR text may contain errors)
June 2, B HARSEL PUMP Filed Sept. 24, 1934 INVENTOR BY WILLIA B. HnRsEL ATTORNEY Patented June 2, 1936 UNITED STATE$ LMZJS I PATET GFFEE 8 Claims.
This invention relates to pumps more particularly of the type in which centripetal action is availed of.
Among other objects, the invention aims to provide an improvedpump of this type in which acasing is revolved in a fluid and having passages therethrough into: which the fluid: is directed by the rotative movement of the casing, the passages communicating with a common outlet duct through which the fluid is caused to flow by the centripetal action referred to.
An important object of the invention is to provide such a casing which is rotatable in either direction, and a further object is to improve the designofthe casing to enhance the efiiciency of the pump while at the same time maintaining it simple and economical instructure and operation.
With these and other objects in View, the inventi'on comprises: certain novel constructions,
combinations, and arrangements of parts hereinafter described and claimed.
In the accompanying drawing, showing an illustrative embodiment of the invention and form- +ing apart of the speciflcation Figure 1 is an elevational view of the illustrative construction with bearing means therefor shown partly in section;
Figure 2 is a plan view of the casing of Figure 1 partly'in section; and
Figure 3 is an el'evational View of the casing, similar to- Figure 1 but omitting the bearing means and'showing the casing partly in section.
Referring in detail to theillustrative constructiondepicted in the drawing, I have shown a casing Ill adapted to-"be rotated in a liquid or other fluid, this casing iil comprising a generally flat impeller portion H which is usually arranged to be rotated in a horizontal plane by means of the upright central stem portion l2 which may advantageously provide a journal for the im peller portion l I.
In accordance with my invention, the impeller portion is of polygonal form in the sense that its perimeter presents a plurality of substantially straight sides and angles in the plane of rotation, for one purpose of offering greater resistance to rotation and thereby causing the fluid to be entrained therein under increased pressure. Both the impeller portion l l of the casing and the stem portion [2, in this instance, are hollow, the impeller portion ll being desirably formed of two metallic plates [3, M of triangular configuration, these plates being maintained in fixed spacedapart relation by spacing rivets 15 to which the plates are secured, these spacing rivets being advantageously located substantially at the apexes of the angles. Suitably secured between the plates I3, [4 also are a plurality of partitions it which jointly divide the interior of the hollow impeller portion ll of the casing IE1 into a plurality, in this instance three, transverse passages l1, l8 and I9. The passages ll, l8 and Hi may be caused to merge, as shown, at a common point such as at the rotative center of the impeller portion ll of the casing, where they all communicate with the hollow interior of the journal or tubular stem l2.
Further in accordance with my invention, each of the passages I7, I 8 and I9 has two openings through the perimeter of the casing, and either of these openings is arranged to be closed and the other opened by means automatically responsive to the pressure of the fluid, so that upon rotation of the casing in either direction, the opening facing in the direction of rotation will be automatically opened and the other opening closed, to direct the fluid into the passages.
In the present exempliflcation, I have shown such means in the form of a swinging deflector 2'0 pivoted to each of the rivets i5, and thus at the apex of each of the angles in the casing perimeter. The deflector may be a metallic blade of a vertical height to have snug but free movement between the plates 53, M and of sufiicient length to slightly lap one of the partition walls I6 in either of the extreme swinging positions of the deflector, the deflector being readily hinged to the cylindrical rivet l5 by having a portion 2| bent thereabout in cylindrical form to provide a hinge knuckle.
In this instance, the partition walls l 6 are advantageously somewhat V-shaped, being in the form of plates having a vertical height equal to the distance between the plates l3, l4 and being bent upon themselves so that their apexes are directed towards each other but spaced apart in the vicinity of the center of the casing. Each of these apexes is advantageously slightly rounded and the V-shaped sides of the partitions flare therefrom in concave curved walls 22, which terminate in somewhat inwardly directed ends 23 with which the deflectors may have close abutment.
So constructed and arranged, when the casing I0 is rotated, for example in the direction of the arrow shown in Figure 2, the pressure of the liquid or other fluid will swing the deflectors to the positions shown in full lines in Figure 2, to close the openings Ila, 18a, l9a into the passages l1, l8 and is facing away from the direction of rotation and to open the openings llb, I81), I91) facing in the direction of rotation. Thus the fluid is directed under pressure concurrently into each of the passages l7, l8 and I9, and each of the streams prevents the other streams from passing outwardly through the passages, but rather, taking the path of least resistance, the confluent streams meeting at the center of the casing will flow upwardlythrough the outlet duct 24 provided by the hollow interior of the tubular stem [2.
As shown in Figure 1, the tubular stem I?! may have a transverse opening 25 therein which com municates with an annular chamber 2%: in the bearing member 21, in which the stem I 2 is journalled. The fluid under pressure in the chamber 26 may be led off through the duct 28 to which any suitable coupling may be connected as by the screw threads 29. be extended in a bracket portion 30 having the usual bolt apertures 3i therein by which the bearing 21, together with the casing l0, may be suitably supported in a fluid reservoir. I have indicated in general that the stem l2 may be retained in the bearing member 2! as by being extended upwardly therebeyond and keyed to a gear or pulley 32 by which the stem and casing may be rotated.
It will readily be understood, that upon rotation of the casing in the opposite direction, the de-' flectors will swing to their opposite position and uncover the openings i 1a., 9811 and Na, while closing the openings lib, I81) and l9b.
Obviously, the invention is not limited to the details of construction here shown for purposes of illustration, and such changes may be made as fall within the scope of the appended claims.
Having described my invention, I claim:
1. In a pump of the class described, the combination of a casing of triangular form adapted for rotation in a fluid, a plurality of passages through the casing, a common discharge duct communicating with the passages, two openings for each passage through the perimeter of the casing adjacent each angle of the triangle and on each side of the apex thereof, and a deflector pivoted at each apex and responsive to pressure of the fluid to close one of the openings for each passage and to open the other whereby the casing may be rotated in either direction.
2. In a pump of the class described, the combination of a casing of non-circular form adapted for rotation in a fluid and having a perimeter presenting a plurality of angles in the plane of rotation of the casing, a central discharge duct for the fluid from the casing, a plurality of passages in the casing communicating with said duct, each passage having a plurality of openings in the perimeter adjacent each of the angles of the perimeter and upon opposite sides thereof,
The bearing member 21 may and a deflector swingable about the apex of each angle and responsive to the pressure of the fluid to close one of the openings for each passage and to open the other.
3. In a pump of the class described, the com- 5 bination of a casing adapted for rotation in a fluid and having a perimeter forming a substantially straight-sided symmetrical polygonal figure, and a plurality of passages through the casing, each having two openings into the perimeter, one 10 on each side of the apex of the angle formed by two contiguous casing sides, and means for selecsage whereby the casing may be rotated in either direction and the fluid will be directed into said 15 passages through the other of the openings for each passage.
4. In apump of the class described, the combination of a rotatable casing formed of two axially aligned parallel plates each having a 20 perimeter of triangular form, walls spacing the plates apart and forming a plurality of passages through the casing, an opening in the perimeter between an adjacent pair of walls for each passage adjacent the apex of each of the angles of the tri- 25,. angle and facing in the direction of rotation of the casing, and means for deflecting a fluid received through said opening toward the center of the casing.
5. In a pump of the class described; the combination of a rotatable casing, a passage therethrough, a plurality of openings into said passage from the perimeter of the casing, and a hinged deflector controlling said openings alternately to close one and open the other responsive to direc- 5 tion of rotation of the casing.
6. In a pump of the class described, the combination of a rotatable casing having a perimeter of polygonal form, a plurality of passages through the casing, two openings in the perimeter for each 40 passage one on each of two adjacent sides of the polygon, and means for deflecting a fluid received through said opening toward the center of the casing.
7. In a pump of the class described, the com- 45 bination of a rotatable casing formed of two centrally aligned parallel plates, cylindrical spacing rivets maintaining the walls in fixed spacedapart relation, a swinging deflector hinged on each rivet, walls carried between the plates de- 50 fining a plurality of passages through the casing, and entrances into each passage defined alternatively by a deflector and one of two of said walls adjacent thereto.
8. The structure of claim '7 wherein the walls are of sheet metal bent to somewhat V-shape and having inwardly directed ends adjacent each of said openings limiting the swinging movement of the deflectors within the casing.
WILLIAM B. I-IARSEL.