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China Two-Stage Screw Air Compressor from Reliable Suppliers and Factory - Energy Efficient and Durable Solutions
Air-end
Two-stage compression compared to single-stage compression tends toward the most energy-efficient isothermal compression. From the principle, two-stage compression saves 5–8% energy over single-stage compression.
✔ Level 1 Energy Efficiency Grade Certified
Compared with Level 2 Energy Efficiency Grade — saves 10%–15% energy. Compared with Level 3 Energy Efficiency Grade — saves 20%–30% energy.
- Adopts 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.
- Capable of displaying multi-line operation parameters and historical records.
- Simple operation and inquiry for convenient maintenance.
Inverter
The inverter is the brain of the air compressor — all operations are processed and regulated through the inverter, ensuring safe and reliable system operation across 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
- The main motor is an IP55 high-efficiency energy-saving permanent magnet motor carefully selected 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 over extended periods.
Frequently Asked Questions
Q What is the main advantage of two-stage compression over single-stage compression?
Two-stage compression approaches isothermal compression more closely, resulting in 5–8% energy savings compared to single-stage compression. It also achieves Level 1 Energy Efficiency Grade Certification, saving 20–30% energy compared to Level 3 standards.
Q What energy efficiency certification does the air-end hold?
The air-end has won the Level 1 Energy Efficiency Grade Certification, which saves 10–15% energy compared to Level 2 and 20–30% energy compared to Level 3 Energy Efficiency Grade standards.
Q What 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 straightforward.
Q Which inverter brands are used in the air compressor?
The air compressor typically uses inverters from Megmeet, Inovance, and Zoncn — all internationally renowned brands known for their stable quality, reliability, and guaranteed after-sales service.
Q What are the key features of the motor used in the air compressor?
The motor is an IP55 high-efficiency permanent magnet motor meeting national energy efficiency standards. It features F-class insulation, B-class temperature rise, dust prevention, and SKF heavy-duty bearings for long-term trouble-free operation. Other IP levels are also available upon request.
Q How does oil mist spray cooling improve compression efficiency?
Oil mist spray cooling is applied between the two compression stages to lower the temperature of the compressed air, bringing the overall compression process close to isothermal compression. This significantly improves compression and insulation efficiency while reducing energy consumption.
