Oil-free air compressor is a kind of compressed air equipment widely used in the industrial field, it has many advantages compared with the traditional oil air compressor, such as no lubricating oil, no oil pollution, no maintenance, low operating costs. According to different industrial needs and application scenarios, the types of oil-free air compressors can be divided into the following categories:
1. Compression structure classification:
- Screw type oil-free air compressor: adopts screw type compression structure, and realizes air compression through two screws meshing with each other. It has the characteristics of high efficiency and stability, suitable for large industrial applications.
- Piston oil-free air compressor: adopts piston compression structure to achieve air compression through the reciprocating movement of the piston. It is simple, reliable and suitable for small and medium-sized industrial applications.
- Centrifugal oil-free air compressor: adopts centrifugal compression structure to compress air by centrifugal force. It has the characteristics of smooth operation and small size, and is suitable for special industrial fields.
2. Power drive classification:
- Electric oil-free air compressor: using the motor as the power drive source, it has the characteristics of stable operation and low noise.
- Diesel oil-free air compressor: using diesel engine as a power drive source, it has the characteristics of strong mobility and suitable for outdoor use.
- Pneumatic oil-free air compressor: The use of pneumatic drive source (such as air motor) as a power drive source, suitable for special industrial fields.
3. Usage scenario classification:
- Industrial oil-free air compressor: suitable for industrial applications such as factories and manufacturing industries, and can be used for compressed air supply and pneumatic tool use.
- Medical oil-free air compressor: suitable for hospitals, laboratories and other medical fields, for medical equipment, laboratory gas supply, etc.
- Food grade oil-free air compressor: suitable for the food processing industry to ensure the purity of the air and prevent oil pollution of food.
4. Classification of control methods:
- Constant frequency control oil-free air compressor: Adjust the speed of the compressor through the control system to achieve stable output of air pressure.
- Frequency conversion control oil-free air compressor: The speed of the compressor is controlled by the frequency converter, and the output pressure is adjusted in real time according to demand, which has a good energy-saving effect.
5. Classification of additional functions:
- Silent oil-free air compressor: reduce noise pollution in the working environment by reducing equipment noise.
- High temperature oil-free air compressor: suitable for working in high temperature environment, with good high temperature resistance.
It should be noted that the above classification is based on some common standards to classify oil-free air compressors, in fact, there are many other oil-free air compressors for specific purposes on the market, such as special gas compressors, special process air compressors, etc. At the same time, with the continuous development of science and technology and changes in industrial demand, the types of oil-free air compressors will continue to increase and update.