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China Two-Stage Screw Air Compressor Suppliers - Energy-Efficient Factory Solutions for Reduced Power Consumption
Air-end
Level 1 Energy Efficiency Grade Certified
Two-stage compression compared to single-stage compression — the two-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.
✦ Compared with Level 2 Energy Efficiency Grade: Save 10%–15% energy.
✦ Compared with Level 3 Energy Efficiency Grade: Save 20%–30% 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 design — engineered for intuitive and reliable operation.
Can display multi-line operation parameters and historical records.
Simple operation and inquiry for convenient maintenance.
Inverter
The inverter is the brain of the air compressor. All operations of the air compressor are processed and regulated through the inverter, ensuring the 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
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.)
All meet national energy efficiency standards.
F-class insulation, B-class temperature rise — effectively preventing the entry of dust.
SKF heavy-duty bearings ensure continuous trouble-free operation over an extended period.
Frequently Asked Questions
What is the main advantage of two-stage compression over single-stage compression?
Two-stage compression more closely approaches isothermal compression, which is the most energy-efficient compression method. Compared to single-stage compression, two-stage compression can save 5–8% more energy, and machines with Level 1 Energy Efficiency Certification can save up to 20–30% compared to Level 3 units.
What energy efficiency certification does the air-end hold?
The air-end has won the Level 1 Energy Efficiency Grade Certification — the highest level available. This means it saves 10–15% more energy compared to Level 2 units and 20–30% more energy compared to Level 3 units.
What brands of inverters are used in the air compressor?
The air compressors typically use inverters from Megmeet, Inovance, and Zoncn. These are internationally recognized brands known for stable, reliable quality and strong after-sales support, ensuring safe and consistent operation of the entire system.
What type of motor does the air compressor use, and what are its specifications?
The air compressor uses an IP55 high-efficiency permanent magnet motor with 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.
How does the controller make operation and maintenance easier?
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 it simple to operate, diagnose, and maintain — even for non-technical users.
Why does the two-stage air-end design extend the lifespan of components?
The two-stage design uses large-diameter, low-speed rotors, which significantly reduce mechanical stress on the bearings and other internal components. Combined with oil mist spray cooling between stages and direct bevel gear drive, the system runs cooler and more smoothly, resulting in a longer service life for all key parts.
