Rotary piston machine with sealing elements

Rotary piston machine

• A. with a piston assembly arranged in a gas-tight inner chamber of a housing, which arrangement is composed of at least three separate rotary pistons
• which are of identical design to one another,
• which are in the form of rectilinear prisms whose front faces are limited by arcs,
• whereby the radial spacing of the axis lines of the shafts is greater than the corresponding dimensions of the rotary pistons by the dimension of a gap S between adjacent rotary pistons, whereby a sealing element is allocated to each gap, which elements each have two sealing bars parallel to one another,
• which have a cross-section which is wider than the width S' of the gap S,
• which are in each case congruent, which are mutually linked by a connecting piece which is narrower than the width S' of the gap S and
• which have a length which corresponds substantially with the length of the rotary pistons, wherein the front faces of the rotary pistons are limited by several arcs which have two different radii, R, r of which the arc pieces with the same radius R or r each have arc lengths equal to one another, which are alternately placed in contact at connection points and tangentially blend into one another at these points,
• which are torsionally stiffly connected with the shafts respectively allocated to them, which shafts are rotatively mounted in the housing, extending along their geometric central axis, and are rotationally synchronized with each other by means of a gear, with which they are rotatable in the same direction of turn,
• which have front faces arranged flush with one another, and
• which limit laterally an inner working space by means of their curved peripheral surfaces,
• whereby the radial spacing of the axis lines of the shafts is greater than the sum (R+r) of the two different radii R, r by the dimension of a gap S between the adjacent rotary pistons, and the sealing bars each have the profile section of an isosceles, blunted triangle, whereby the corners of the triangle point towards each other, the bases extend parallel to one another and the relationship ##EQU3## applies for the angle phi between the connecting line of the opposing blunted corners of the isoceles triangle and its sides, whereby K is the distance between the respective parallel sides projected onto a line parallel to the bases, and K can be positive, negative or zero.