double stage variable frequency screw air compressor

The double stage variable frequency screw air compressor stands out for its high efficiency and ability to automatically adjust operational states according to work demands, achieving a perfect balance between energy saving and stable operation.

Features of Double Stage Variable Frequency Screw Air Compressor

1. High efficiency and energy saving: Utilizes a custom high-efficiency two-stage compression screw mainframe and fully enclosed oil-cooled permanent magnet synchronous motor. Compared with traditional single-stage compressors, two-stage compression reduces energy loss and improves overall efficiency.
2. Low noise design: Host and motor are integrated coaxially, achieving 100% transmission efficiency with no mechanical loss. This results in lower noise and more stable performance, ideal for noise-sensitive environments.
3. Intelligent control system: Equipped with a smart energy-saving system for real-time condition monitoring, dynamic display, and unattended operation. Features flow and constant pressure control to keep pressure fluctuations within ±0.01 MPa, reducing energy consumption.
4. Two-stage compression technology: Adopts isobaric compression, lowering each stage’s compression ratio and reducing reflux leakage. This significantly reduces power consumption and enhances both volumetric and adiabatic efficiency, achieving up to 15% energy savings.
5. High reliability and safety: Features an IP65-rated permanent magnet motor for durable, long-term stable operation even in harsh environments, enhancing safety and longevity.

Working Principle

The compressor employs a two-stage screw design: air is initially compressed in the first stage, then cooled, and enters the second stage for further compression to the required pressure. The dual-stage process lowers the compression ratio at each stage and reduces leakage, improving efficiency. The permanent magnet synchronous motor uses frequency conversion to automatically adjust speed based on air demand, minimizing unnecessary energy usage while ensuring stable pressure output.

Application Areas

• Industrial manufacturing: Metal processing, plastic molding, machining, and automobile manufacturing for stable, efficient air supply.
• Construction industry: Powers pneumatic tools such as punchers and wrenches, boosting construction efficiency and tool longevity.
• Food and pharmaceutical industry: Delivers clean, oil-free compressed air, meeting strict hygiene standards.
• Energy and environmental protection: Used in oil/gas compression, waste gas treatment, and environmental protection equipment.
• Automotive and aviation: Essential for testing, maintenance, and high-pressure gas supply in manufacturing and aerospace processes.
• Electronics and high-tech industry: Provides a stable gas source for precision equipment in semiconductor, optoelectronic, and other advanced manufacturing sectors.