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0102030405
China Suppliers Factory Oil-Lubricated Two-Stage Screw Air Compressor for Enhanced Energy Efficiency and Reliability
Air-end
Two-stage compression compared to single-stage compression, the two compression tends to the most provincial power of the isothermal compression. From the principle, the single-stage compression of the two compression energy saving 5~8%.
🏆 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.
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
- Can display multi-line operation parameters and historical records
- Simple operation, easy inquiry, and 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 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
- 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 for a long time
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, resulting in energy savings of 5–8% compared to single-stage compression. It also offers a higher volumetric efficiency and a lower compression ratio per stage, which reduces mechanical stress and extends component life.
Q What energy efficiency certification does the air-end hold?
The air-end has been awarded the Level 1 Energy Efficiency Grade Certification — the highest grade available. This means it saves 10–15% energy compared to Level 2, and 20–30% energy compared to Level 3 efficiency ratings.
Q What features does the controller offer for ease of use?
The controller features an LCD HD touch monitor with PLC control and an intuitive human menu interface. It displays multiple lines of real-time operation parameters, historical records, and provides easy inquiry and maintenance functions — making operation straightforward for all users.
Q Which inverter brands are used and why?
The air compressors typically use inverters from Megmeet, Inovance, and Zoncn — all internationally renowned brands. These brands are chosen for their stable and reliable quality, strong after-sales support, and proven performance in ensuring safe and efficient air compressor operation.
Q What are the key specifications of the motor used in the air compressor?
The main motor is an IP55 high-efficiency permanent magnet motor, meeting national energy efficiency standards. It features F-class insulation, B-class temperature rise for improved thermal management, effective dust ingress prevention, and SKF heavy-duty bearings for long-term, trouble-free continuous operation. Other IP protection levels are also available upon request.
Q How does oil mist spray cooling between compression stages benefit performance?
Oil mist spray cooling is applied between the two compression stages to reduce the temperature of the compressed air before it enters the second stage. This makes the overall compression process closely approximate isothermal compression, which significantly improves compression efficiency and reduces energy consumption compared to adiabatic compression processes.
