Daeser Pneumatics

Rotary Screw Air compressor is an industrial air compressor that uses a variable frequency drive (VFD) control system to adjust the speed of its motor. This allows the compressor to deliver the exact amount of air required by the application, while also reducing energy consumption.

A rotary screw air compressor is a type of air compressor which uses a rotary-type positive mechanism. Screw compressors can commonly be found where large volumes of high-pressure air are in need. When your application requires continuous air demand, a screw compressor is the way to go.

DAESER Brand Screw air compressor works by trapping air between two rotating screw-shaped rotors inside a casing. As the rotors turn, the trapped air moves along the screws, reducing the space and increasing the pressure, which compresses the air.

⚙️ Main Components

1. Air End (Rotors) – Two interlocking helical screws that compress the air.

2. Motor or Engine – Drives the rotors.

3. Air Filter – Removes dust and contaminants from incoming air.

4. Oil Separator – Separates oil from compressed air (in oil-injected types).

5. Cooling System – Prevents overheating during operation.

6. Control Panel – Monitors pressure, temperature, and operation.

🔄 Working Principle

1. Air enters through the intake valve.

2. The rotors rotate, trapping air between them.

3. The space between the rotors gradually decreases, compressing the air.

4. Compressed air is discharged at high pressure for use.

✅ Advantages

• Continuous air supply

• High efficiency

• Low vibration and noise

• Long service life

• Suitable for 24/7 industrial operation

🏭 Applications

Screw air compressors are commonly used in:

• Manufacturing industries

• Automotive workshops

• Food and beverage processing

• Textile industries

• Construction equipment

📊 Types

1. Oil-Injected Screw Compressor – Oil is used for lubrication and cooling.

2. Oil-Free Screw Compressor – Produces clean air for sensitive industries (food, medical, electronics).