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Two-Stage Screw Air Compressor - Energy-Efficient Solutions from China Suppliers and Factory
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% more energy than single-stage compression.
🏆 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 for intuitive, effortless operation.
Multi-line Parameter Display
Historical Records
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.
Megmeet
Inovance
Zoncn
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 motors meet the national energy efficiency standards with F-class insulation and B-class temperature rise, effectively preventing the entry of dust.
IP55 Protection
F-Class Insulation
SKF Heavy-Duty Bearings
Frequently Asked Questions
QWhat is the advantage of two-stage compression over single-stage compression?
Two-stage compression approaches isothermal compression more closely than single-stage compression, resulting in 5–8% greater energy savings. It also features lower compression speed, equal pressure ratio across both stages, and oil mist spray cooling between stages for improved efficiency.
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 than Level 2 and 20–30% more than Level 3 certified units, significantly reducing operating costs.
QWhat type of controller is used and what can it display?
The air compressor uses an LCD HD touch monitor with PLC control and a human-friendly menu interface. It can display multiple lines of real-time 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, reliable quality and strong after-sales support. These inverters serve as the control brain of the compressor, regulating all operations to ensure safe and reliable system performance.
QWhat are the key specifications of the motor used in the air compressor?
The main motor is an IP55-rated high-efficiency permanent magnet motor meeting national energy efficiency standards. It features F-class insulation, B-class temperature rise for thermal protection, dust ingress prevention, and SKF heavy-duty bearings that ensure long-term, continuous, trouble-free operation.
QHow do SKF bearings contribute to the motor's reliability?
SKF heavy-duty bearings are globally recognized for their durability and precision. In this motor, they reduce mechanical stress during operation, support the large-diameter, low-speed rotors, and ensure continuous trouble-free running over an extended service life, minimizing downtime and maintenance costs.
