Single-unit bipolar screw compressor unit

A single-unit bipolar screw unit is a refrigeration compressor device that utilizes a two-stage compression structure. This unit utilizes a combination of low-pressure and high-pressure screw rotors to achieve a continuous two-stage compression process within a single housing. The refrigerant gas is initially compressed by the low-pressure rotor, then enters an intercooler for isobaric cooling. The high-pressure rotor then performs secondary compression to reach the desired discharge pressure.

This unit typically features a two-stage oil lubrication system, independent cooling circuits, and an adjustable capacity control device. Its design focuses on reducing the single-stage compression ratio and rotor load, thereby improving operational stability and lowering energy consumption. It is suitable for medium- and low-temperature refrigeration applications such as industrial refrigeration, food processing, and cold chain logistics.

The unit's integrated design reduces the need for external piping, simplifies system layout, and reduces the risk of leaks. Select models offer multi-stage capacity regulation, automatically adjusting output according to load changes.