SCREW COMPRESSOR FOR HIGH CAPACITIES OF DRIVE Russian patent published in 2011 - IPC F04C18/16 

FIELD: engines and pumps.

SUBSTANCE: compressor includes two rotors, drive rotor 2 mainly with convex profile and with four, five or six teeth, and driven rotor 3 with six or seven teeth. Rotor 2 has end of drive shaft 5. Rotors 2 and 3 are enclosed in sections of the housing, suction section, section of rotors and delivery section. Ratio of profile parts length of rotors 2 and 3 to distance between axes of rotors 2 and 3, which determines the load on bearings 10, is decreased by shortening the profile parts of both rotors 2 and 3. At the suction with joint to working chamber in section of rotors 2 and 3 there rigidly located is intermediate plate 7 having parts of suction channel 4 and non-contact sealing the end surface of pair of rotors 2 and 3 and filling the space formed due to shortening of profile parts of rotors 2 and 3.

EFFECT: sufficient service life required for industrial application.

5 cl, 2 dwg