ROTARY POSITIVE DISPLACEMENT MACHINE (VERSIONS) Russian patent published in 2008 - IPC F01C1/10 

FIELD: mechanical engineering; positive displacement machines.

SUBSTANCE: proposed rotary positive displacement machine contains housing, outer rotor with internal teeth, inner rotor with external teeth and ring end face disks. At least one ring end face disk is made integral with outer rotor which is split, consisting of two opposite coaxial component parts installed with adjoining and forming common rotating part, each including ring end face disk made integral with part of teeth of outer rotor. Teeth of one component part of outer rotor are arranged between teeth of other component part of said rotor with alternation. End faces of teeth of both component parts of outer rotor opposite to corresponding ring end face disks are made cantilever and oppositely orientated. Ring end face disk of each component part of outer rotor is provided with radial cavities located from side of inner rotor coaxially with teeth of opposite component part of outer rotor. Cantilever end face of said teeth are made for arrangement inside radial cavities of corresponding ring end face disk and mating with surface of said cavities. Radial cavities in ring end face disks of outer rotor are made through over entire width of said disks or on part of width of said disks from side of inner rotor.

EFFECT: improved reliability and increased service life of rotary machine.

22 cl, 17 dwg