Патент USA US2410596код для вставки
w. 5, ma. - A. c. BRADFORD SLIDING VANE ENGINE OR PUMP Filed Nov. 9, 1945 ~ 2,43 Q5 Patented Nov. 5, i946 2,410,596. SLIDING VANE ENGINE on. PUMP ' Aaron 0.- Bradford, Thayer, Mo. _ Application November 9, 1943, Serial No. 509,599 ‘ '3 Claims. (oi. 103-137) ,- ' i .- This invention relates to a rotary pump or en gine, and has for the primary object the provision of a‘ device of this character which will be ex tremely ef?cient and consists of a minimum num ber of parts, such as a stator and a rotor includ ing a slidable abutment or gate of an improved construction to assure against leakage between the rotor and stator and still maintain friction therebetween reduced to a minimum. . - 2 > the body's of the stator as well as with the heads or end walls 8 to prevent leakage between the gate or'abutment and the stator. The. packing i9 is substantially triangular shaped in cross section so as to tightly ?t the V‘-shaped grooves and protrudes a limited dis , tance beyond said grooves to have the stated W11) ing contact with the stator. ' The'packing i9 is made up from aplurality of L-shaped strips, the With these and other objects in view as will 10 ends of which are cut on an angle so that when become more apparent as the description pro the strips are assembled in the grooves of the ceeds, the invention consists in certain novel fea; abutment or gate the ends of the strips will over tures of construction, combination and arrange lap, as shown at 20, effecting an efficient seal be ment of parts as will be hereinafter more fully tween connecting or adjacent strips of the pack 15 mg. described and claimed. For a complete understanding of my invention, Thelrotor rotateswithin the stator and during reference is to be had to the following description its rotation the gate. or abutment is free toslide and accompanying drawing, in which _ relative thereto. so that the packing thereof will Figure 1 is a side elevation illustrating a pump maintain a wiping contact with the interior walls‘ or engine constructed in accordance with my in 20 of the statorand it will be seen that during the vention. rotation of the rotor any fluid which may be Figure 2 is a transverse sectional view illustrat within the chamber ‘I will be forced therefrom by ing the stator and rotor, the latter including the the abutment or gate when the latter passes be - improved construction of abutment or gate. yond the outlet port and that ?uid will be taken Figure 3 is a vertical sectional view illustrating 25 into the chamber 1 as the abutment or gate moves the device c away from the inlet port l6,~thereby permitting Figure 4 is a side elevation illustrating the the ?uid to be efficiently circulated by the device abutment or gate. Figure 5 is an edge elevation illustrating the gate or abutment. . Referring in detail to the drawing, the numeral 5 indicates a stator including an annular body 5 in which is'formed. a chamber 1 of substantially elliptical shape. The stator 5 further includes if the device is used as a pump and if used as a compressor or engine substantially the same op 30, erations occur, - While I have shown ‘and described the pre— ferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement'of parts may be made without departing from the spirit and scope removable end walls or heads 8- provided with in ternal recesses 9 arranged in opposed relation and eccentrically of the chamber ‘l and which " of the invention as claimed. age- about the shaft. stator, said packing taking the form of L-shaped Having thus described my invention, what I provides seats for rotatably supporting a rotor claim is: Ill’ having wiping contact at one point with the 1. In a pump, a stator having inlet and outlet internal wall of the body 6 of the stator 5 and 40 ports ‘and forming a chamber of elliptical section‘ between inlet and outlet ports designated gen and having opposite end walls and a curved side erally by the characters 10 and l l. wall, a rotor eccentrically journaled in the cham A shaft 12 is integral with one end of the rotor ber and having contact with the stator between l0’ and extends through an opening #3 provided said ports and provided with a slot, a substan in one of the heads or end walls 8.) A stu?‘lng tially rectangular shaped plate slidable in the slot gland It is provided between said last-named and having grooves in the edges thereof, and a head or end wall and the shaft I? to prevent leak packing arranged in the grooves to contact the The rotor l0’ includes a cylindrical body l5 strips to fit about the corners of said'plate and provided with an elongated slot l6 extending 50 having their adjacent ends beveled for overlap- ‘ therethrough to slidably receive an abutment or ping, all of said edges of the rectangular plate gate ll substantially rectangular ‘shaped, the having grooves formed therein and the beveled edges of which are provided with substantially v overlapping ends of said. packing strips bein'g dis- ' shaped grooves 58 to accommodate packing l9 posed in the intermediate part of each of said ' adapted to have wiping contact with the Wall of 55 edges, so that the packing strip portions on the 3 2,410,596 opposite side edges of the plate are disposed inv contact with the end walls or the stator and of the slots in the rotor and the other packing strip portions on the other opposite side edges of the plate are in contact with the curved stator wall. _ 2. In a pump or the like, a stator having inlet _ 4 . i . ranged within the groove‘that the beveled over lapping ends lie within the portion of said groove ‘ intermediate the walls thereof and the opposed ends ?t about the complemental edges or said groove. ‘ 3.~ In a pump, a stator having inlet and outlet ports and iorming a chamber of elliptical section and having opposite end walls and a curved side wall, a rotor eccentrically Journaled in the a curved side wall, a rotor eccentrically journaled in said chamber and having contact with the 10 chamber and having contact with the stator be tween said ports and provided with a slot, a sub curved side wall of the stator between said ports stantialhr rectangular plate slidable in said rotor ' and provided with a slot having opposite end slot and having V-shaped grooves in its edges and walls ‘each ?ush with an end wall of the stator, coactlng with the walls of the pump chamber and a substantially rectangular plate slidable in said slot and having grooves in its edges and coact 15 including opposite edges each of which passes over said ports in succession, said plate forming ing with the interior of the chamber and includ expanding and contracting ?uid spaces, and a ing a pair of opposite edges; each of which passes packing mounted within each of said grooves, over said parts in succession and forming ex saidpacking taking the form of substantially L panding and contracting ?uid pumping spaces, 'and a packing mounted within each- of said’ 20 shaped strips having their adjacent ends beveled to overlap one another and of a cross-section grooves, said packing taking the form or substan and outlet ports and forming a chamber of el llptical section and having opposite end walls and tially L-shaped strips having their adjacent ends beveled to overlap one another and being so are r conforming to a groove of said plate. I AARON C. BRADFORD.