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China Two-stage Screw Air Compressor - Energy Efficient, Reliable Suppliers & Factory Solutions
Air-end
🏆 Level 1 Energy Efficiency Grade Certified
Two-stage compression compared to single-stage compression tends toward the most energy-efficient isothermal compression — saving 5–8% energy over single-stage compression.
Won the award of Level 1 Energy Efficiency Grade Certification. 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
PLC Control
Human Menu Interface
Can display multi-line operation parameters and historical records for easy review and analysis.
Simple operation, easy inquiry, and convenient maintenance — designed for operators at every level.
Inverter
The inverter is the brain of the air compressor — all operations are processed and regulated through it, ensuring safe and reliable system performance across all aspects.
We typically use inverters from internationally renowned brands with stable and reliable quality, guaranteed after-sales service, and the best possible user experience.
Megmeet
Inovance
Zoncn
Motor
⚡ IP55 High-Efficiency Permanent Magnet 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)
National Energy Efficiency Standards
F-Class Insulation
B-Class Temperature Rise
SKF Heavy-Duty Bearings
Effectively prevents dust ingress and ensures continuous trouble-free operation over a long service life.
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 than single-stage compression, resulting in 5–8% energy savings. With Level 1 Energy Efficiency Grade Certification, it saves 10–15% compared to Level 2 and 20–30% compared to Level 3 certified units.
Q
How does oil mist spray cooling improve compression efficiency?
Oil mist spray cooling is applied between the two compression stages. This keeps the compression process close to isothermal compression, significantly improving compression insulation efficiency and reducing overall energy consumption.
Q
What inverter brands are used in this air compressor?
The air compressor uses inverters from internationally recognized brands including Megmeet, Inovance, and Zoncn. These brands are known for their stable performance, reliable quality, and strong after-sales service support.
Q
What are the key specifications of the motor used in this 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 ingress protection, and SKF heavy-duty bearings for long-term trouble-free operation. Other IP protection levels are also available upon request.
Q
What functions does the controller provide?
The controller features an LCD HD touch monitor with PLC control and a human-friendly menu interface. It displays multiple lines of real-time operation parameters and historical records, making operation, inquiry, and maintenance straightforward for users.
Q
How does the two-stage rotor design extend the service life of the air compressor?
The two-stage rotors feature a large diameter and operate at low speed, which significantly reduces stress on the bearings and other internal components. This design extends the lifespan of bearings and associated parts, minimizing maintenance needs and downtime.
