A single screw compressor has how many main rotors and what type?

A single screw compressor is characterized by having one main rotating element, commonly referred to as the rotor, which is paired with two additional rotors, often called star rotors. The main rotor is typically a helical or spiral shape, which allows for the compression of gas as it moves through the housing. The design incorporates the star rotors to aid in the compression process by creating a sealing mechanism that allows the compressor to maintain a constant pressure and volume.

This configuration is efficient for achieving a consistent flow of compressed air or gas with minimal pulsation, which is particularly beneficial in various industrial applications. By maintaining one main rotor and two star rotors, the design maximizes the surface area for the compression process while minimizing wear and backlash, enhancing the overall durability and reliability of the compressor.