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China Two-Stage Screw Air Compressor Factory - Energy-Efficient Air Solutions from Top Suppliers
Air-end
⭐ Level 1 Energy Efficiency Certified
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%.
🏆 Won the award of Level 1 Energy Efficiency Grade Certification.
• Save 10%–15% energy vs. Level 2 Energy Efficiency Grade.
• Save 20%–30% energy vs. Level 3 Energy Efficiency Grade.
• Save 10%–15% energy vs. Level 2 Energy Efficiency Grade.
• Save 20%–30% energy vs. Level 3 Energy Efficiency Grade.
- 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.
- Can display multi-line operation parameters and historical records.
- Simple operation, easy inquiry, and convenient maintenance.
Inverter
The inverter is the brain of the air compressor — all operations are processed and regulated through it, ensuring 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
- 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 for a long time.
Frequently Asked Questions
QWhat is the main advantage of two-stage compression over single-stage compression?
Two-stage compression approaches isothermal compression more closely, saving 5–8% more energy than single-stage compression. It also features lower pressure ratios per stage, improved volumetric efficiency, and oil mist spray cooling between stages for enhanced thermal management.
QWhat energy efficiency certification does the air-end hold?
The air-end has won the Level 1 Energy Efficiency Grade Certification — the highest level available. It saves 10–15% more energy compared to Level 2, and 20–30% more energy compared to Level 3 energy efficiency grades.
QWhat features does the controller offer for ease of use?
The controller 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 and convenient.
QWhich inverter brands are used and why?
We use inverters from Megmeet, Inovance, and Zoncn — all internationally recognized brands known for stable quality and reliable after-sales support. The inverter acts as the brain of the system, regulating all compressor operations for safe and consistent performance.
QWhat type of motor is used and what are its key specifications?
The main motor is an IP55 high-efficiency permanent magnet motor with F-class insulation and B-class temperature rise. It meets national energy efficiency standards and is equipped with SKF heavy-duty bearings for long-term, trouble-free continuous operation. Other IP protection levels are also available upon request.
QHow do the rotor design and bevel gear drive contribute to compressor longevity?
The large-diameter, low-speed rotors significantly reduce stress on bearings and internal components, extending their operational life. The two-stage rotors are each directly driven by a bevel gear, maximizing transmission efficiency and minimizing mechanical wear over time.
