与往复活塞式制冷压缩机相比，螺杆式制冷压缩机具有转速高，重量轻，体积小，占地面积小以及排气脉动低等一系列优点。螺杆式制冷压缩机没有往复质量惯性力，动力平衡性能好，运转平稳，机座振动小，基础可作得较小。螺杆式制冷压缩机结构简单，机件数量少，没有像气阀、活塞环等易损件，它的主要摩擦件如转子、轴承等，强度和耐磨程度都比较高，而且润滑条件良好，因而机加工量少，材料消耗低，运行周期长，使用比较可靠，维修简单，有利于实现操纵自动化。与速度式压缩机相比，螺杆式压缩机具有强制输气的特点，即排气量几乎不受排气压力的影响，在小排气量时不发生喘振现象，在宽广的工况范围内，仍可保持较高的效率。
Compared with the reciprocating plug refrigeration compressor, the screw refrigeration compressor has a series of advantages, such as high speed, light weight, small volume, small floor area and low exhaust pulsation. The screw type refrigeration compressor has no reciprocating mass inertia force, good dynamic balance performance, stable operation, small base vibration and small foundation. Screw refrigeration compressor has simple structure, few parts, no vulnerable parts like air valve and piston ring. Its main friction parts, such as rotor and bearing, have high strength and wear resistance, and good lubrication conditions, so it has less machining volume, low material consumption, long operation cycle, reliable use, simple maintenance, and is conducive to the realization of operation automation. Compared with the speed compressor, the screw compressor has the characteristics of forced gas transmission, that is, the exhaust volume is almost not affected by the exhaust pressure, there is no surge phenomenon when the exhaust volume is small, and it can still maintain high efficiency in a wide range of working conditions.
Compared with the reciprocating plug refrigeration compressor, the screw refrigeration compressor has a series of advantages, such as high speed, light weight, small volume, small floor area and low exhaust pulsation. The screw type refrigeration compressor has no reciprocating mass inertia force, good dynamic balance performance, stable operation, small base vibration and small foundation. Screw refrigeration compressor has simple structure, few parts, no vulnerable parts like air valve and piston ring. Its main friction parts, such as rotor and bearing, have high strength and wear resistance, and good lubrication conditions, so it has less machining volume, low material consumption, long operation cycle, reliable use, simple maintenance, and is conducive to the realization of operation automation. Compared with the speed compressor, the screw compressor has the characteristics of forced gas transmission, that is, the exhaust volume is almost not affected by the exhaust pressure, there is no surge phenomenon when the exhaust volume is small, and it can still maintain high efficiency in a wide range of working conditions.
