PM variable frequency dual stage screw air compressor

The permanent magnet frequency conversion two-stage screw air compressor is a high-efficiency, energy-saving solution designed to deliver stable compressed air for manufacturing, electronics, textile, food processing, and automotive industries. Its core technologies—two-stage compression, permanent magnet synchronous motor drive, and intelligent control systems—enable lower energy consumption, higher air output, and reliable pressure stability.

Features of Permanent Magnet Frequency Conversion Two-Stage Screw Air Compressor

1. High-efficiency two-stage compression design:
   • Custom twin-screw mainframe optimizes pressure distribution for smoother compression and lower energy use.
   • Rated air volume: 5.7 m³/min; Pressure: 0.8 MPa—suitable for various industrial applications.
   • Two-stage compression increases gas production by over 15% and achieves up to 15% energy savings compared to single-stage models.
2. Fully enclosed permanent magnet synchronous motor, IP65 protection:
   • Oil-cooled, dust- and moisture-proof PMSM motor for longer service life and stable operation in harsh environments.
   • Direct drive transmission with 100% transmission efficiency, no belts or gears to reduce mechanical losses.
3. Intelligent control system:
   • Smart flow and constant pressure control keeps system pressure fluctuation within ±0.01MPa.
   • Automatically adjusts operation to precisely match gas demand, ensuring energy is never wasted.
   • Supports remote monitoring and unattended operation to lower labor and maintenance costs.
4. Low noise and low vibration:
   • Direct drive and optimized screw design ensure quiet, smooth operation, ideal for noise-sensitive environments.
   • Reduced mechanical wear extends equipment service life.

Working Principle

1. Two-stage compression: Air is first compressed, raising temperature and reducing volume. Enhanced oil injection cooling lowers second-stage suction temperature, minimizing energy loss. Equal pressure ratio between stages reduces leakage and improves efficiency.
2. PMSM frequency conversion control: Frequency conversion dynamically adjusts motor speed to match air demand, avoiding power waste. High-efficiency PMSM maintains high performance under all loads, improving energy savings by 5–10% compared to standard motors.
3. Intelligent pressure adjustment: Real-time monitoring and automatic output adjustment maintain constant pressure, minimizing pneumatic equipment failure due to pressure fluctuation. Supports remote monitoring, data storage, and intelligent analysis for efficient equipment management.

Application Areas

• Manufacturing: Stable air for pneumatic tools, equipment, automated lines, and high-precision industries like spraying and laser cutting.
• Electronics industry: Clean, oil-free compressed air for component manufacturing, chip production, cleaning, and precision assembly.
• Textile industry: Reliable air supply for airflow spinning, air jet looms, and other productivity-boosting equipment.
• Food & Pharmaceutical Industry: Oil-free compressed air for hygienic food processing, beverage packaging, and pharmaceutical production.
• Automobile manufacturing: Energy-efficient air supply for spraying, assembly, stamping, and other automotive processes.