two stage dual variable frequency twin screw air compressor which is low air pressure

The two stage dual variable frequency twin screw air compressor is a high-performance solution designed for low-pressure, high-flow industrial applications. Featuring advanced two-stage compression and permanent magnet dual inverter drive, it delivers outstanding exhaust efficiency and energy savings at lower pressures (0.2MPa~0.5MPa). With a flow range of 4.6m³/min to 65m³/min and a high-capacity oil separation system, it ensures pure, reliable compressed air output for a wide range of industries.

Technical Parameters

• Pressure range: 0.2MPa to 0.5MPa
• Flow rate range: 4.6m³/min to 65m³/min
• Driving mode: Permanent magnet dual variable frequency drive

Features of Two Stage Dual Variable Frequency Twin Screw Air Compressor

1. Two-stage compression, high efficiency & energy saving: Reduces single-stage compression loss, improving efficiency and lowering power consumption.
2. Permanent magnet dual frequency conversion: Precisely adjusts motor speed based on air usage, minimizing energy loss and extending equipment life.
3. Low pressure optimization: Specifically engineered for low-pressure use, reducing excess energy consumption compared to traditional high-pressure machines.
4. Large flow design: Handles a wide flow range (4.6m³/min~65m³/min) for diverse industrial demands.
5. High-efficiency oil separation system: Ensures oil content ≤ 3ppm, providing clean air output, lowering maintenance costs, and protecting downstream equipment.
6. Intelligent temperature control management: Dual inverter control for the main motor and cooling fan enables smart temperature regulation, reducing overheating risks and ensuring long-term stability.

Working Principle

The compressor operates on a twin-screw two-stage compression principle. Incoming air is first compressed by the stage-one rotor, then cooled in an intercooler before entering the stage-two rotor for further compression to the target pressure. This reduces the compression ratio per stage, limits leakage and mechanical load, and boosts efficiency and equipment lifespan.

Dual frequency conversion intelligent control:
The inverter main motor automatically matches speed to air demand, reducing idle running and saving energy. The inverter cooling fan adjusts speed based on temperature sensor input, avoiding unnecessary energy loss and maintaining optimal operating conditions. This advanced system significantly decreases start-up impact and partial-load energy consumption compared to traditional compressors.

Application Fields

• Textile industry: Air jet looms, textile printing/dyeing, airflow spinning, and other low-pressure, high-air-volume processes.
• Water treatment industry: Aeration tanks, gas mixing, and other processes in wastewater treatment.
• Packaging and food processing: Low-pressure inflatable equipment for food, pharmaceutical, and plastic packaging industries.
• Building materials industry: Glass manufacturing, pneumatic transport, ceramics production, and other low-pressure applications.
• Chemical and coating industry: Pneumatic transportation, spraying, mixing, chemical reactions, and various low-pressure processes.