How a Screw Compressor Works

1️⃣ Introduction

The screw compressor is one of the most important components in modern industrial refrigeration systems.
It provides continuous, stable, and efficient gas compression, making it ideal for long-term cooling applications.

2️⃣ Structure of a Screw Compressor

A screw compressor mainly includes:

• Two helical rotors（male & female）

• Housing / compression chamber

• Suction section

• Discharge section

• Oil separation & cooling components

3️⃣ How the Working Process Happens

1. Suction Stage

Gas enters the compressor through the suction port and fills the space between the two rotors.

2. Compression Stage

As the rotors rotate in opposite directions, the gas becomes trapped between them.
The space gradually decreases, causing the gas pressure to rise.

3. Discharge Stage

When the gas reaches the discharge end, it is released into the refrigeration system to complete the cooling cycle.

4️⃣ Why Screw Compressors Work So Efficiently

Continuous compression

No intermittent movement, ensuring smooth output.

High volumetric efficiency

Rotor engagement minimizes leakage.

Low vibration

Smooth rotation reduces mechanical stress.

Long lifespan

Fewer moving parts

5️⃣ Applications in Industrial Refrigeration

Industrial cold storage

Food processing & freezing

Central refrigeration systems

Chemical cooling

Commercial cooling equipment

6️⃣ Advantages for Industrial Users

For businesses, the screw compressor offers:

Stable performance

Lower energy costs

Reduced maintenance

Long-term durability

Strong adaptability

7️⃣ Conclusion

A screw compressor works by trapping and compressing gas through two rotating helical rotors.
Its continuous, smooth, and efficient operation makes it a key component in modern refrigeration technology.