Air Compressors

Refrigeration systems and many other applications use air compressors and even though we use them daily, we don’t always know how they work. They have been used in the industry for more than a century and are part of now almost indispensable devices, air being a flexible, safe, clean, and environment friendly resource.

An air compressor is air tank filled with compressed air and they are components of many devices.rclma Inflating balloons, your tires, delivering oxygen to scuba divers and air conditioning are just some of the most often uses of air compressors; they are also in some of the large power plants that deliver energy to machinery.

They come in different shapes and sizes and the most popular are piston compressors, rotary screw compressors, rotary sliding vane compressors and centrifugal compressors.

The piston or reciprocating compressors are the most common as they have a wide range of uses. They are more or less similar to a combustion engine as air is pumped into a chamber which then is reduced in size.

For the rotary screw compressors, a void between two helical mated screws is filled with air and the screws are turned resulting in decreased volume. Most of them also inject oil for lubrication and cooling.

The rotary sliding vane compressor is also a positive displacement air compressor, consisting of a stator, rotor and 8 blades. The void will fill with air and oil, and when the rotor moves the air compresses.

A non-positive displacement air compressor is the centrifugal compressor which uses fast spinning impellers and a diffuser for controlling the air.

There are also electric, portable, oil-less and high-pressure air compressors.

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