SCREW COMPRESSOR ROTOR STRUCTURE AND VARIABLE-FREQUENCY SCREW COMPRESSOR HAVING SAME

摘要

A screw compressor rotor structure and a variable-frequency screw compressor having the same. The screw compressor rotor structure comprises a female rotor, the female rotor comprising a female rotor body (10); a plurality of female tooth portions (11) are disposed on the female rotor body (10), and a tooth profile line is formed between the crests of two adjacent female tooth portions (11) on an end surface of the female rotor body (10); the tooth profile line is formed by connecting an arc segment a₁b, an envelope bc, an arc segment cd, an arc segment de, an arc segment ea₂ and an arc segment a₂a₃ end to end in sequence along the counterclockwise direction, the centers of the arc segment cd and the arc segment de being located at two sides of the tooth profile line.