Main types of domestic air compressors

2021-12-07 22:29

Air compressor is a kind of machine widely used in enterprises and factories. What are the common types of air compressors in China? Today, Xiaobian will take you to understand. At present, the types of air compressors in China's market can be divided into screw air compressor, piston air compressor and centrifugal air compressor. So what are the working principles of these three air compressors? What are the characteristics of each and which fields are applicable?

Screw type

At present, the screw air compressor is often contacted by enterprises. It has gradually replaced the previous piston air compressor. It is popular because of its long service life and high stability. Screw air compressor is a constant volume and rotary compressor. It mainly completes the suction closure compression exhaust cycle through the meshing and rotary movement of screw. The utility model has the advantages of firmness, durability and convenient maintenance, and the disadvantage is that the output pressure is unstable, and the energy efficiency under the same conditions is lower than that of the piston air compressor.

Piston type

The piston air compressor can be called the "overlord" of the air compressor industry in the past ten years. It is the preferred object for the majority of enterprises. It is cheap and cost-effective. Piston air compressor is a constant volume, reciprocating compressor, which mainly completes the suction closure compression exhaust cycle through the movement cooperation of cylinder, piston and valve. Its advantages are large pressure range, good stability and stable exhaust pressure. Its disadvantages are large and bulky, and the operation and maintenance cost is relatively high.

Centrifugal air compressor is a variable volume and impeller compressor. It mainly forms centrifugal force through the high-speed operation of impeller to promote the high-speed flow of air, and generates compressed air with certain pressure and flow through the conversion of supercharger. The working process is suction - speed increase - diffusion - discharge.

Other types

In addition to several common types of air compressors mentioned in the above small series, other air compressors with practical value include scroll air compressor, sliding vane air compressor and axial flow air compressor, which can be attributed to constant volume, variable volume and other compression methods, which are similar to the analysis process of the above air compressor. Considering the small demand, they will not be discussed separately in this small series.