The air compressor is a machine that pumps air by regulating its pressure. This device is powered by an engine that operates in the same way as an internal combustion engine. It uses a crankshaft, piston, valve, and head to produce compressed air. This air is then used to power various tools, such as impact wrenches and nailers. Air compressors are available in various types and sizes, each with a specialized use. They differ in the displacement of air and the power they provide.
There are two main types of air compressors: rotary and reciprocating. A rotary air compressor is similar to a gear pump. The rotor spins expotab, and the piston moves upward and downward. As the piston moves, atmospheric air is drawn into the compressor chamber through an opened valve. When the piston moves backwards, the atmospheric air leaves the chamber, and is forced through the output.
Reciprocating compressors are the most common. They are available in single-stage, double-stage, or multistage models. These units compress air using a piston that reciprocates within a cylinder. The cyclical action of the piston allows for higher pressures. The kinetic energy of air compression creates heat, so many two-stage compressors contain cooling units that cool the air as it travels between cylinders. The result is a more powerful air compressor with less wear and tear.
Axial compressors, on the other hand, use a series of blades to force air through a narrow space. While these are not as common as rotary compressors, they are often used in aircraft engines and large air separation plants. Centrifugal compressors, on the other hand, bring air to the center of the device through a rotating impeller. Using an electric high-speed motor, these types of air compressors are also common in HVAC systems.