How Do Gas Compressors Work?

An air compressor consists of an electrical motor that compresses the air into a tank. The compressed air can be released at the picked pressure when required. How does an air compressor work? What are the requirements for selecting an ideal air compressor? Well there are a range of various compressor types.

Let’s continue with a summary. Generally compressors utilized in automation and workshops are the so-called plus displacement compressors. Here pressure is created when air is drawn into a container and the volume of that container is decreased. For this article we wish to restrict ourselves to this kind of compressor. Let’s take a closer look at the reciprocating compressor.

The crankshaft turns which moves the piston inside the round chamber. An inlet valve likewise called an intake valve enables atmospheric air to enter the cylinder. This is done during a suction blow from the cylinder. The vacuum valve opens or deflates at high pressure during the pressure paddle.

The air is heated when it is compressed. This is an issue for each compressor. The outcome is not simply a less efficient compression cycle, however likewise the danger of a genuine explosion if any combustible compounds, such as oil or lubes, touch with the piston and air. The pressure of a single stage compressor is limited to an output pressure of about 10 bar or 145 lbs To accomplish greater pressures, you can use a multi-step compressor.

In a 2 stage compressor, the big piston develops the first stage. The air that exits the first stage can now be cooled before going into the 2nd stage. With a two-stage compressor, you can accomplish pressure in excess of 20 bar or 290 psi. Multistage compressors can likewise be utilized with high-power water-cooled jackets to prevent overheating. Based upon its working principle, the reciprocating compressor supplies only pulse compressed air.

This type of compressor is utilized in conjunction with a tank. The usage of a tank supplies the advantage that the compressor can be operated with a two-point controller, resulting in less power usage and wear.

The diaphragm compressor belongs to the piston compressor family. Here the suction chamber of the piston is closed by a diaphragm. The advantage of a diaphragm compressor is the compressed air in the compression chamber does not enter into contact with the piston and is lubricated. Therefore it can be kept devoid of oil. Here are a few examples:


The weak point of a diaphragm compressor is generally its diaphragm itself due to the fact that flexibility is limited. Diaphragm compressors are utilized for example in the food industry or for filling divers bottles.

The working principle is totally different from the so-called rotary compressor, which is likewise called a vane compressor. A typical rotary compressor has a round chamber. Adjustable rotors with their center point on the drive shaft are linked to the chamber.

When the pivot rotates, these rotors produce a chamber of various sizes. Air is compressed into the largest chamber, then left and compressed in the smallest chamber. An advantage here remains in pulsed free flow in contrast to piston compressors. An air tank may be optional. In addition, these compressors are relatively insensitive to dirt and produce litle noise