POSITIVE DISPLACEMENT MACHINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention relates to triaxial compression and rarefaction machines with rotor executing planetary motion. Proposed machine comprises solid hollow stator, front and rear end face covers with fitted-in bearings. Shaft with eccentric section is installed in bearings coaxially to stator space. Front and rear end face covers are rigidly and hermetically connected with stator for form first and second ring spaces. Rotor is installed on eccentric section of shaft and is mechanically coupled with rear end face cover by means of planetary gear train. Rotor is provided also with end face flanges playing the part of intake and discharge disk slide valves whose peripheral sections are constantly arranged, respectively, in first and second ring spaces to provide noncontact sealing over end faces of machine working chambers owing to minimum guaranteed clearance between end face flanges of rotor and side walls of corresponding ring spaces. Invention improves reliability of end face sealing system of variable volume working chambers at simultaneously increasing compression ratio of working medium. EFFECT: simplified design. 8 cl, 8 dwg