US2662482A

US2662482A - Ball piston pump

Info

Publication number: US2662482A
Application number: US246206A
Authority: US
Inventors: Paulsmeier Fritz; Warschau Hans
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-09-12
Filing date: 1951-09-12
Publication date: 1953-12-15
Anticipated expiration: 1970-12-15

Description

Dec; 5, 1953 F. PAULSMEIER ETAL 2,

BALL PISTON PUMP Filed Sept. 12, 1951 2 Sheets-Sheet l INVENTORS: FR/ZZ PAULSME/ER y HANS MPSCHAU K. /A W ATTORNEK Dec. 5, 1953 F. PAULSMEIER ETAL 2,662,432

BALL PISTON PUMP 2 Sheets-Sheet 2 Filed Sept. 12, 1951 S 0 MT U T H M Ns k N s R r z N J R Patented Dec. 15, 1953 UNITED STATES PATENT OFFIGE.

BALL PIS TON PUMP Fritz Paulsmcier, Hamburg Bergedorf, and Hans Warsch'au, Hamburg-Fuhlsbuttel, Germany.-

Applicationseptembe'r 12, 1951, Serial No. 246,206 6 Claims. (01. 103-117) 1 2 The p esent inv t on r l tes to'improvements The cylindrical head of the oscillating piston in ball piston pumps. 4 is rigidly associated with two ball segments 5 n Obj c f t e nv t on is to provide a fluid and 6 (see Fig. 2) and is therefore completely; pump of the type comprising a spherical pump supported in the housing ll which is provided c am r, a pis on member having a pheric l with an exchangeable bearing lining H a.

surface fitting into said pump chamber, and two The pumping actionof the machine is obtained" operating elements positioned at right angles. to w in such manner that on rotating the driving shaft each other and individually journaled to said I the oscillating piston sections i, and 6 driven piston member for universal movement of one by the driving element 2 arerotated and simuloperating element relativeto the other operating taneously oscillated due to engagement of the element, the piston member and the operating guide groove or cut-out l2 withan'operating ele-"- elements being so shaped that losses due to inment 3ahaving a pin 3 inclined to the driving. ternal friction of the fluid and friction between shaft i (see Fig. 3) so that between the flanks of the latter and-thernovable parts of the pumpare the elements 2 and 311 on the one hand and thereduced toaminimume flanks of the cut-outs in pistons on the other A further object of theinvention is the prohand chamber are successively opened and vision of a fluid pump of the type described supra. closed with a mouth-like movement in front of in which the. sphericalsurfaceof the piston memthe inlet and outlet openings 7 and 8;

her is only interrupted by two relatively small cut-. In the embodiment according to "Figsx l to' fi outs for receiving the operating elements leaving the cylindrical head is not provided on the oscilrelatively large ball segments at 'either'side of lating piston M but on the driving element the journal portions of the operating elements correspondingly the piston :14 is formed as :a I aiiording secure connection of the latter with the. socket to receive this head. Moreover, this empiston member and reducing leakageto a mini- W bodiment diifers from that of Figs. 1 to 3 because mum and considerably increasing over-all effi-. the concave'surface portions I6 of the driving ciency of the pump. Due to the considerablesealelement i 5 (Fig. 4) i and the flanks or surface poring surfaces and the secure universal-jointcontions 11, ii of the other operating element 19 nections provided in the pump according to the (Fig. 5)' are not flat but concave and the bottom invention, this pump can produce extraordinarily. portions i 8, 8, respectively; of the. piston cut high pressures. so out in M are correspondingly convex. Thereby Two constructional embodiments of the inven-.- the result is obtained that the fluid to be pumped tion are described below with reference to the.-ac-. flows tangentially into the suction chamber withcompanying drawings wherein: o-ut pressure loss and is likewisedelivered from Figs. 1 to 3 show a first embodiment of the. the pressure chamber.

invention, Fig. 1 being a section of the pump. on. .35 In Fig. 5 there isshown how, on the oscillat" the line II of Fig. 3, Fig. 2 being a section along... ing rotary movement of the pump piston, the line 11-11 of Fig. Land Fig. 3 being a section. inlet" area Q1 in the suction chamber, beginningi on IIIIIIof Fig. 1. with the piston position according to Fig. 4, is re- Figs. 4. to 6 show a second embodiment, Fig. 4 duced first to the area Q2 and finally to' the area being a sectional view corresponding to Fig. 1, so Q3 as shown in dotted lines. To assure that at Fig. 5 being a section on VV of Fig.4, and Fig. this moment the pumped fluid can be transferred 6 being a view toward the suction side of the pump. without pressure loss into the pressure chamber, according to Fig. 4. the liner 260i the bearing housing enclosing'the Fig. '7 is an exploded view of the heart ofthe piston is cut away at Zion the suctiohside and pump according to the invention. 4.5 at 22 on the pressure side (see also Fig. The Fig. 8 is an exploded view as Fig. 7, the parts length of these cut-aways, which have a. con being revolved 90 relatively to Fig. 7. cave spherical configuration, depends on the di- According to Fig. 1 the driving shaft is rigidly anieter of the ball piston Mend amounts to about connected with an operating element?! formed 1 2- or of the circumference of the piston.

as a ball socket; This encloses ina pincer-like Otherwise the construction and method of opmanner the cylindrical head of the oscillating eration of the pump according to Figs. 4 and 5 piston t in the mannerof a knuckle-joint,-piston are the same as that of the pump shown in Figs. 4 also having a guide groove i2 (see Fig. 3) eX- 1 to 3. Due to the universal joint connection, tending over two thirds ofits periphery. Piston H large sealing surfaces are produced so that the Me carried by the operating element 2. pump according to the invention is suitable for u very high pressures, for example for spraying highly compressed fuel mixtures.

The pump may be used for several purposes because either the unloaded, idle-running shaft 3 or 3' can be used for driving other apparatus, for example a counting device for measuring the amount of fiuid delivered. The vacuum on the suction side of the pump may be used for operating a milking machine. Compressed air delivered by the pump may be used for inflating vehicle tires.

The pump according to the invention can also be constructed for example as a compressor for a refrigerator.

The material for the ball socket for the operating elements 2, l5, l9 and the piston 4 or M can be chosen according to the type of fluid to be pumped. Besides steel, bronze, aluminum, and synthetic materials, rubber can be used. Types of rubber are known which are very strong and adhere firmly to metals. Pistons, piston segments and bearing sockets made of such rubbers permit the use of the pump inter alia not only for pumping clear liquids but also water containing sand and other littleor non-lubricating fluids whereby the field of application of the pump is considerably increased.

What we claim is:

1. A pump comprising a housing having a spherical pump chamber, an inlet and an outlet conduit extending from said chamber, a member having a spherical surface and being rotatable in said chamber, said member having a first and a second cut-out, said cut-outs being diametrically opposed, each cut-out having two plane, spaced, and parallel side walls arranged symmetrically with respect to planes containing the center of said member, the side walls of the first cut-out being placed at a right angle with respect to the side walls of the second cut-out, said first cut-out having a cylindrically curved, central bottom pertion extending around a diameter of said member which diameter is at a right angle with respect to the planes of the side walls of said first cut-out, said first cut-out having two bottom portions symmetrically flaring from said central bottom portion between said side walls, a first operating element having two plane parallel side surfaces individually slidably engaging the plane parallel side walls of said first cut-out, said first element having an outer surface portion shaped spherically with the same diameter as the spherical surface of said member, said first element having a cylindrically curved surface portion extending at a right angle with respect to said plane parallel surfaces and slidably fitting said central bottom portion of said first cut-out, said first element having two surface portions symmetrically flaring from said cylindrically curved surface portion, said second cut-out having a cylindrically curved central bottom portion extending betw n and t a ri h angle to the planes of the side walls of said second cut-out and around the diameter of said member, said second cut-out having two bottom portions symmetrically flaring from said central bottom portion of the second cut-out between said side walls, a second operating element having two plane, parallel side surfaces individually, slidably engaging the plane, parallel side walls of said second cut-out, said second element having an outer surface portion shaped spherically with the same diameter as the spherical surface of said member, said second element having a cylindrically curved surface portion having the same radius as and being slidably rotatable on said central bottom portion of said second cut-out, said second element having two surface portions symmetrically flaring from the cylindrically curved surface portion of the second element, and a shaft means connected with each of said elements and individually extending on the axis of symmetry of said elements.

2. A pump comprising a housing having a spherical pump chamber, an inlet and an outlet conduit extending from said chamber and being disposed on a straight line, a member having a spherical surface and being rotatable in said chamber, said member having a first and a second cut-out, said cut-outs being diametrically opposed, each cut-out having two plane, spaced, and parallel side walls arranged symmetrically with respect to planes containing the center of said member, the side walls of the first cut-cut being placed at a right angle to the side walls of the second cut-out, said first cut-out having a concave, cylindrically curved bottom portion, the longitudinal axis of said bottom portion coinciding with a diameter of said member which diameter is at a right angle to the planes of the side walls of said first cut-out, said first cut-out having two convexly curved bottom portions symmetrically flaring from said concave bottom portion between said side walls to the spherical surface of said. member, a first operating element having two plane parallel side surfaces individually slidably engaging the plane parallel side walls of said first cut-out, said first element having an outer surface portion shaped spherically with the same diameter as the spherical surface of said member, said first element having a convexly cylindrically curved surface portion extending at a right angle to said plane parallel surfaces and slidably fitting into the concave cylindrically curved bottom portion. of said first cut-out of said member. the circumferential extension of said convex surface portion being greater than the cylindrical extension of said concave bottom portion, said first element having two substantially concave surface portions symmetrically extending from said convex surface portion and individually substantially conforming with the convexly curved bottom portions of said member, the angle enclosed by said concave surface portions being smaller than the angle enclosed by said convexly curved bottom portions of the first cut-out, affording oscillation of said member relatively to said first element about the longitudinal axis of said convex bottom portion, said second cut-out having a convexly cylindrically curved central bottom portion extending between and at a right angle to the planes of the side walls of said second cut-out and around a diameter of said member, said second cut-out having two convexly curved bottom portions symmetrically flaring from said central bottom portion of the second cut-out between said side walls to the spherical surface of said member, a second operating element having two plane parallel side surfaces individually slidably engaging the plane parallel side walls of said second cut-out, said second element having an outer surface portion shaped spherically with the same diameter as the spherical surface of said member, said second element having a concave cylindrically curved surface portion having the same radius and slidably engaging said central bottom portion. of said second cut-out and extending at a right angle to the side surfaces of the second element, said second element having two concave surface portions symmetrically flaring from said concave, cylindrically curved surface portion of the second element and individually substantially conforming with the convexly curved bottom portions of said second cutout, the angle enclosed by said flaring surface portions of said second element being smaller than the angle enclosed by said convexly curved bottom portions of said second cut-out. affording oscillation of said member relating to said second element about the longitudinal axis of the central bottom portion of the second cut-out, and individual shaft means individually connected with each of said elements and extending radially of said member.

3. A pump as set forth in claim 2, the outer part of said symmetrical concave surface portions of said first element extending in a direction substantially parallel to the line on which said conduits are disposed.

4. A pump as set forth in claim 2, said concave flaring surface portions of said elements individually extending at a right angle to the parallel side surfaces of the respective elements.

5. A pump as set forth in claim 2, the shaft means connected with said first element extending at a right angle to the line on which said conduits are disposed, said inlet conduit having an interior wall portion adjacent to said first element, and a cut-away in said Wall portion.

6. A. pump as set forth in claim 2, comprising a cut-away in each of said conduits adjacent to the pump chamber, said cut-aways being disposed on a diameter of the pump chamber.

FRITZ PAULSMEIER. HANS 'WARSCHAU.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,049,775 Holmes Aug. 4, 1936 2,353,780 Neuland July 18, 1944 FOREIGN PATENTS Number Country Date 333,256 Italy Dec. 24, 1935 400,508 Great Britain Oct. 26, 1933