The difference between scroll compressor and screw type

There are significant differences between scroll compressors and screw compressors in terms of structure, performance and application. Here are the main differences between the two:

structural features:

scroll compressor: compact structure, small size, light weight, mainly composed of dynamic scroll, static scroll, bracket, eccentric shaft, anti-rotation mechanism, etc. Such a compressor has fewer parts and therefore has high reliability.

Screw compressor: mainly by a pair of parallel, intermeshing male and female rotor (screw), this structure makes it has a high mechanical efficiency. There is a small gap between the rotor tooth surface of the screw compressor, so it can withstand the impact of liquid, and can be pressed to send liquid-containing gas, dust-containing gas, easy to polymerize gas, etc.

Working principle and performance:

scroll compressor: Compresses gas by the relative movement of the orbiting scroll and the fixed scroll. Its smooth operation, small vibration, low noise, and small torque changes. In addition, the efficiency of the scroll compressor is high, because the compression process is continuous, the heat loss is small, and the gas pressure is similar, which reduces the leakage caused by the excessive pressure difference.

Screw compressor: rely on the relative movement between the screw to compress the gas. It has high reliability, convenient maintenance, good power balance and strong adaptability. The screw compressor has the characteristics of forced gas transmission, the volume flow is almost not affected by the exhaust pressure, and can maintain high efficiency in a wide range.

Application Scenarios:

scroll compressor: higher efficiency at low gas volume, suitable for small refrigeration equipment, air conditioning, etc. Its characteristics of energy saving, low noise and low maintenance cost make it advantageous in these fields.

Screw compressor: It performs better at high air volume and is widely used in refrigeration, refrigeration, air conditioning and chemical processes. Its forced gas transmission characteristics make it can maintain high efficiency in a variety of conditions.

In summary, there are significant differences between scroll compressors and screw compressors in terms of structure, working principle and performance, and application scenarios. Which type of compressor to choose depends on the specific application needs and scenarios.