+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 Factory Solutions from Trusted Suppliers
Air-end
Level 1 Energy Efficiency Grade Certified
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.
✦ Saves 10%–15% energy vs. Level 2 Energy Efficiency Grade | Saves 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.
- Displays multi-line operation parameters and historical records at a glance.
- Simple operation and inquiry — convenient for maintenance and monitoring.
Inverter
The inverter is the brain of the air compressor. All operations are processed and regulated through the inverter, 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, 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 a long period of time.
Frequently Asked Questions
QWhat is the advantage of two-stage compression over single-stage compression?
Two-stage compression closely approaches isothermal compression, which is the most energy-efficient form of compression. Compared to single-stage compression, two-stage compression saves 5–8% more energy. Additionally, units with Level 1 Energy Efficiency certification save 10–15% over Level 2 and 20–30% over Level 3 grade units.
QWhat type of motor is used in this air compressor?
The main motor is an IP55-rated high-efficiency permanent magnet motor, featuring F-class insulation and B-class temperature rise. It meets national energy efficiency standards and uses SKF heavy-duty bearings to ensure long-term, trouble-free operation. Other IP protection levels are also available upon request.
QWhich inverter brands are used and why are they chosen?
We use inverters from internationally recognized brands — Megmeet, Inovance, and Zoncn. These brands are selected for their stable and reliable quality, proven performance in industrial applications, and strong after-sales service networks, ensuring the best user experience for air compressor operation.
QWhat features does the controller offer?
The controller features 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 daily operation, inquiry, and maintenance simple and convenient.
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 theoretically most efficient compression method — thereby improving overall compression insulation efficiency and reducing energy consumption.
QHow does the rotor design contribute to longer component life?
The air-end uses large-diameter, low-speed rotors that are directly driven by bevel gears. The lower rotational speed significantly reduces mechanical stress on bearings and other internal components, resulting in extended service life, lower maintenance frequency, and more reliable long-term operation.
