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China Two-Stage Screw Air Compressor Factory | Energy-Efficient Compressors from Leading Suppliers
Air-end
Two-stage compression compared to single-stage compression, the two compression tends to the most provincial power of the isothermal compression. From the principle, the single-stage compression of the two compression energy saving 5~8%.
Level 1 Energy Efficiency Grade Certified
Compared with Level 2 Energy Efficiency Grade — Save 10%–15% energy. Compared with Level 3 Energy Efficiency Grade — Save 20%–30% energy.
- Adopt two-stage independent compression
- The pressure ratio is equal over both stages as well as having a lower compression speed, which helps improve volumetric efficiency
- Oil mist spray cooling is used between the stages to make the entire compression process close to isothermal compression and improve the compression insulation efficiency
- The two-stage rotors are directly driven by the bevel gear respectively, and the compression transmission efficiency is high
- The large diameter and low speed of the rotors reduce stress on the bearings, thus lengthening their life span as well as any other components
Controller
- LCD HD touch monitor with PLC control and human-friendly menu interface design
- Displays multi-line operation parameters and historical records
- Simple operation and inquiry for convenient maintenance
Inverter
The inverter is the brain of the air compressor, and all operations of the air compressor are processed and regulated through the inverter, ensuring the safe and reliable operation of the air compressor system in all aspects.
We typically use inverters from Megmeet, Inovance, and Zoncn — internationally renowned brands with stable and reliable quality and guaranteed after-sales service, providing customers with the best possible air compressor user experience.
Motor
IP55 High-Efficiency Permanent Magnet Motor
- Carefully selected IP55 high-efficiency energy-saving permanent magnet motor according to the application of the air compressor (other IP levels available)
- All meet the national energy efficiency standards with F-class insulation and B-class temperature rise, effectively preventing the entry of dust
- SKF heavy-duty bearings ensure continuous trouble-free operation for a long time
Frequently Asked Questions
QWhat is the advantage of two-stage compression over single-stage compression?
Two-stage compression approaches isothermal compression more closely, which is the most energy-efficient form of compression. Compared to single-stage compression, two-stage compression saves approximately 5–8% of energy, and with Level 1 Energy Efficiency certification, it can save 20–30% compared to Level 3 grade units.
QWhat energy efficiency certification does the air-end hold?
The air-end has won the Level 1 Energy Efficiency Grade Certification — the highest level. It saves 10–15% more energy compared to Level 2, and 20–30% more compared to Level 3 certified units.
QWhat type of controller interface does the air compressor use?
The air compressor features an LCD HD touch monitor with PLC control and a human-friendly menu interface. It can display multiple lines of operation parameters and historical records, making operation, inquiry, and maintenance simple and convenient.
QWhich inverter brands are used, and why?
We use inverters from Megmeet, Inovance, and Zoncn — all internationally recognized brands known for stable and reliable quality and strong after-sales support. These inverters serve as the brain of the compressor, managing and regulating all operations to ensure safe and reliable performance.
QWhat are the key features of the motor used in the air compressor?
The main motor is an IP55 high-efficiency permanent magnet motor that meets national energy efficiency standards. It features F-class insulation, B-class temperature rise, effective dust prevention, and SKF heavy-duty bearings for long-term, trouble-free continuous operation. Other IP protection levels are also available upon request.
QHow does oil mist spray cooling improve compression efficiency?
Oil mist spray cooling is applied between the two compression stages to absorb heat generated during compression. This keeps the process close to isothermal compression — the theoretical ideal — which significantly improves compression insulation efficiency and reduces overall energy consumption.
