What are the three common air compressors?

Common air compressor mainly has the following three kinds:

piston air compressor: This is a relatively early type of air compressor, its structure is simple, the price is relatively low, so in some of the air compressor performance requirements are not high occasions still have applications. However, due to its relatively slow speed, more wearing parts and frequent maintenance, it has been gradually replaced by other types of air compressors.

Screw air compressor: Screw air compressor is one of the most used air compressor types on the market. Its operating principle is that a pair of parallel-arranged male and female rotors (ie screws) rotate in the cylinder, so that the air between the rotor cogging continuously produces periodic volume changes, and the air is transported from the suction side to the rotor axis. The output side realizes the whole process of suction, compression and exhaust of the screw air compressor. Screw air compressor has the advantages of simple structure, high reliability, high efficiency and low noise.

Centrifugal air compressor: Centrifugal air compressor is a kind of turbo compressor. Its working principle is that the impeller drives the gas to rotate at a high speed, so that the gas generates centrifugal force. Due to the expansion flow of the gas in the impeller, the gas The flow rate and pressure after passing through the impeller are increased, and compressed air is continuously produced. Centrifugal air compressors are generally used in occasions that require large flow, and have the advantages of compact structure, light weight, small footprint, large displacement, and convenient maintenance.

In addition to the above three, there are some other types of air compressors, such as sliding vane air compressors, scroll air compressors, etc., but these types of air compressors are relatively less used. When choosing an air compressor, you need to choose the most suitable type according to the specific usage scenario and needs.