ROTARY MACHINE Russian patent published in 2006 - IPC F04C18/08 

FIELD: mechanical engineering; compressors, pumps, expansion machines.

SUBSTANCE: propored rotary machine contains housing, drive and driven rotors with blades, suction and delivery ports. Blades of drive rotor are made with convex working surfaces, and those of driven rotor, with concave ones. Section is formed on one of ends of driven rotor on which cavities variable in depth are made. Blades on corresponding section of drive rotor are made with profile variable in height in longitudinal section delivery port is found in part of end face surface of housing enclosing section of driven rotor with cavities variable in height. Line of mating of blades of drive rotor and cavities of driven rotor on said section and lines of mating of driven and drive rotors are noninterrupted on entire length.

EFFECT: increased compression ratio, capacity, useful space, reduced losses.

1 dwg