JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.4 P.310-326

Geometry of screw compressor rotors and their tools

Author(s): Nikola Stosic, Ian K. Smith, Ahmed Kovacevic, Elvedin Mujic
Affiliation(s): Centre for Positive Displacement Compressors, City University London, London EC1V 0HB, UK
Corresponding email(s): n.stosic@city.ac.uk
Key Words: Geometry of screw compressors, Rotor lobe profile, Cutting tools

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Abstract: This paper presents a method of general geometrical definitions of screw machine rotors and their manufacturing tools. It describes the details of lobe shape specification, and focuses on a new lobe profile, which yields a larger cross-sectional area and shorter sealing lines resulting in higher delivery rates for the same tip speed. A well proven mathematical model was used to determine the optimum profile, compressor housing size, and compressor ports to achieve the superior compressors.

Reference

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