+86 18366183241
- PM VSD Screw Air Compressor
- Two-Stage Screw Air Compressor
- 4-In-1 High Pressure Screw Air Compressor
- 2-In-1 Screw Air Compressor
- 4-In-1 Screw Air Compressor
- Fixed Speed Screw Air Compressor
- Oil Free Screw Air Compressor
- Refrigerated Air Dryer
- Oil-Lubricated Mobile Piston Air Compressor With Wheels
- Air Storage Tank For Air Compressor
0102030405
China Two-Stage Screw Air Compressor: Energy-Efficient Solutions from Suppliers and Factory
Air-end
★ Level 1 Energy Efficiency Certified
Two-stage compression compared to single-stage compression tends toward isothermal compression — saving 5–8% more energy. Compared with Level 2 Energy Efficiency Grade, saves 10%–15%; compared with Level 3, saves 20%–30% energy.
- Adopts two-stage independent compression.
- Equal pressure ratio over both stages with lower compression speed, improving volumetric efficiency.
- Oil mist spray cooling between stages keeps the compression process close to isothermal, improving insulation efficiency.
- Two-stage rotors are directly driven by bevel gears respectively, ensuring high compression transmission efficiency.
- Large diameter and low-speed rotors reduce bearing stress, lengthening lifespan of bearings and other components.
Controller
- LCD HD touch monitor with PLC control and human-friendly menu interface design.
- Displays multi-line operation parameters and historical records in real time.
- Simple operation and inquiry process for convenient maintenance.
Inverter
The inverter is the brain of the air compressor — all operations are processed and regulated through it, ensuring safe and reliable system performance.
We typically use inverters from Megmeet, Inovance, and Zoncn — internationally renowned brands with stable, reliable quality and guaranteed after-sales service, providing customers with the best possible air compressor user experience.
Motor
- IP55 high-efficiency energy-saving permanent magnet motor, carefully selected for air compressor applications. (Other IP levels available.)
- Meets all national energy efficiency standards with F-class insulation and B-class temperature rise.
- Effectively prevents dust ingress, ensuring a clean and reliable internal environment.
- SKF heavy-duty bearings ensure continuous, trouble-free long-term operation.
Frequently Asked Questions
QWhat is the advantage of two-stage compression over single-stage compression in an air compressor?
Two-stage compression more closely approaches isothermal compression, which is the most energy-efficient form of compression. Compared to single-stage compression, it saves 5–8% more energy. Additionally, units with Level 1 Energy Efficiency Certification save 20–30% more energy than Level 3 units.
QWhat type of controller is used in this air compressor?
The air compressor features an LCD HD touch monitor with PLC control and a user-friendly human 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 are they chosen?
We use inverters from Megmeet, Inovance, and Zoncn — all internationally recognized brands known for their stable performance, reliable quality, and strong after-sales support. These inverters serve as the core control brain of the compressor, ensuring safe and efficient operation.
QWhat are the key features of the motor used in this air compressor?
The motor is an IP55-rated high-efficiency permanent magnet motor that meets national energy efficiency standards. It features F-class insulation, B-class temperature rise, effective dust protection, and SKF heavy-duty bearings — all designed for long-term, continuous, trouble-free operation.
QHow does oil mist spray cooling improve compression efficiency?
Oil mist spray cooling is applied between the two compression stages. This reduces the temperature of the air mid-compression, making the overall process closely approximate isothermal compression. The result is improved compression efficiency and reduced energy consumption compared to adiabatic compression.
QHow does the rotor design contribute to the longevity of the air compressor?
The two-stage rotors feature a large diameter and operate at low speed, which significantly reduces mechanical stress on the bearings and other internal components. This design extends the service life of bearings and related parts, ensuring reliable long-term performance with lower maintenance requirements.
