The advantages and disadvantages of centrifugal air compressors, screw air compressors, and piston air compressors

The advantages and disadvantages of centrifugal air compressors, screw air compressors, and piston air compressors

There are many types of air compressors. The following okmarts.com editor introduces the three most common air compressors, namely centrifugal air compressors, screw air compressors, and piston air compressors, and understands and analyzes their respective advantages and disadvantages. When you choose an air compressor, you have a correct judgment.

　　 1. Brief introduction of centrifugal air compressor:

　　 Centrifugal air compressor is a high-speed rotation of the moving gas of the impeller, causing the gas to generate centrifugal force. Because of the pressure expansion activity of the gas in the impeller, the flow rate and pressure of the gas after the impeller are advanced, and the compressed air is continuously produced. The centrifugal air compressor belongs to the speed compressor. When the air load is stable, the centrifugal air compressor works stably and reliably.

　　 advantages of centrifugal air compressor:

　　 (1) The exhaust gas is not polluted by lubricating oil, and the air supply quality is high;

　　 (2) High efficiency at large displacements and conducive to energy saving.

　　 (3) Compact planning, light weight, large displacement planning;

　　 (4) Few wearing parts, reliable work and long life;

　　 Disadvantages of centrifugal air compressor:

　　 (1) The change of exhaust volume has a great impact on mechanical efficiency;

　　 (2) The equipment has high technical content and high maintenance costs.

　　 (3) The operation is relatively messy, and the maintenance needs are high;

　　 (4) The gearbox is noisy;

　　 (5) When the displacement is changed greatly, it is easy to surge;

　　2. Introduction to screw air compressor:

　　Screw type air compressor uses the mutual meshing of male and female screw rotors to continuously reduce the volume between teeth and the pressure of gas to continuously advance, and then continuously generate compressed air. Screw air compressors are also classified as positive displacement compressors, but because of the working principle of screw models, it is decided that the air supply of screw air compressors is stable compared to piston air compressors and generally does not need to be equipped with air storage tanks.

　　 Screw air compressor advantages:

　　 (1) Smooth work, low vibration, stable exhaust;

　　 (2) The operation is relatively simple

　　 (3) The unit displacement volume is small, saving floor space;

　　 (4) Air can be supplied according to the required displacement;

　　 (5) Few wearing parts, reliable work and longer life span;

　　 Disadvantages of screw air compressor:

　　 (1) The screw gap will become larger after working for a long time, and it will cost more for punctual correction or replacement.

　　 (2) The power consumption is relatively high;

　　 (3) High working noise, noise reduction is required;

　　3. Brief introduction of piston air compressor:

　　 Piston-type air compressor uses the reciprocating motion of the crankshaft to move the piston to compress the gas in the cylinder cavity and continuously generate compressed air. Piston-type air compressors are classified as positive displacement compressors. The working principle and characteristics of this model are limited. In order to stabilize the air supply, generally piston-type air compressors are equipped with air storage tanks.

　　 the advantages of piston air compressor:

　　 (1) The operation is more convenient;

　　 (2) The compressor equipment has a low price and low initial investment;

　　 (3) The influence of gas volume scheduling is relatively small compared with pressure;

　　 (4) The pressure plan is relatively large;

　　 (5) Long service life.

　　 Disadvantages of piston air compressor:

　　 (1) The vibration and noise of the compressor during operation are relatively large, and the equipment and equipment must be high;

　　 (2) The cost of work and maintenance is relatively high.

　　 (3) The equipment is large and clumsy;

　　 (4) The planning is messy, there are many wearing parts, and the repair workload is relatively large.