The choice of which type of air compressor is good depends on the specific use requirements, working environment, budget and quality requirements of compressed air. The following are some common types of air compressors and their characteristics for your reference:
1. piston air compressor
working principle: Through the rotational movement of the crankshaft connecting rod mechanism, the piston is driven to reciprocate in the cylinder to realize the compression of gas.
Advantages:
- the price is relatively cheap and the initial investment is low.
- Air volume regulation has little effect on pressure.
- Large exhaust pressure range.
Disadvantages:
- the equipment is bulky and heavy, with a large footprint.
- The structure is complex, the vulnerable parts are many, and the maintenance workload is large.
- During operation, the vibration and noise are large, and the installation foundation is required to be high.
- Energy efficiency is relatively low, operation and maintenance costs are high.
Applicable Scenarios suitable for occasions with moderate displacement, no special requirements for noise and vibration, and limited budget.
2. screw air compressor
working principle: The compression of gas is realized by the change of the cogging volume of the yin and yang rotors.
Advantages:
- high stability, high efficiency, relatively low vibration and noise.
- There are few wearing parts, low failure rate, and relatively simple operation and maintenance.
- The displacement is continuously adjustable, which can meet the needs of different working conditions.
Disadvantages:
- the cost is relatively high and the initial investment is large.
- The gas may contain a small amount of lubricating oil and require subsequent treatment.
Applicable Scenarios: Suitable for occasions that require high quality of compressed air and require continuous and stable gas supply, such as factory production lines, mines, transportation, water conservancy and other fields.
3. scroll air compressor
working principle: A plurality of compression chambers are formed by the meshing of the movable scroll and the fixed scroll. As the scroll rotates, the volume of the compression chamber gradually decreases, thereby realizing the compression of the gas.
Advantages:
- simple and compact structure, small size and light weight.
- Smooth operation, very low vibration and noise.
- High work efficiency and low energy consumption.
Disadvantages:
- the exhaust pressure is relatively low, and the single head exhaust volume is small.
- The price is relatively high, and it is suitable for occasions with extremely high noise and vibration requirements.
Applicable Scenarios: Suitable for schools, dentistry, hospitals, small pharmaceutical or pharmaceutical R & D, small food production lines and other applications with very high air quality requirements.
4. centrifugal air compressor
working principle: The gas obtains kinetic energy through the high-speed rotation of the impeller, and then converts the kinetic energy into pressure energy in the diffuser.
Advantages:
- large volume, simple and compact structure, light weight.
- Balanced operation, reliable operation and high operating rate.
- High energy efficiency, especially in the atmosphere is particularly prominent.
Disadvantages:
- the stable working condition zone is narrow, and the surge phenomenon is easy to occur.
- It is sensitive to dust and droplets contained in the gas and requires pretreatment.
- The price is expensive and the maintenance cost is high.
Applicable Scenarios it is suitable for occasions with very large air consumption and high air quality requirements, such as large chemical, electronic, textile and other industries.
5. other types of air compressors
- oil-free air compressor: Using special materials and sealing technology to ensure that there is no contact with oil during compression. It is suitable for occasions where the quality of compressed air is extremely high and there is no oil pollution.
- Variable frequency air compressor: The motor speed is controlled by the inverter, and the displacement is adjusted in real time according to the actual gas consumption. It has the advantages of energy saving, stability and low noise. It is suitable for occasions with large fluctuations in gas consumption.
6. selection recommendations
- choose according to demand first, clarify your specific needs such as gas consumption, pressure, and air quality requirements, and then choose the type of air compressor that can meet these needs.
- Consider the budget: The price of different types of air compressors varies greatly, and you should choose according to your own budget range.
- Understanding Brands and Services: Choose well-known brands and suppliers with good after-sales service to ensure the quality of the equipment and the convenience of subsequent maintenance.
- Field Trials and Trials: If conditions permit, you can inspect the supplier's production base and equipment operation on the spot, and try the equipment to understand its actual performance.
In summary, no type of air compressor is absolutely good, only the air compressor that best suits your needs is the best. Therefore, when choosing an air compressor, various factors should be fully considered and reasonable decisions should be made.
