Air compressors can be used for a variety of jobs including painting and woodworking. Before buying one for yourself, consider how they work so you can better understand how they can assist you in your tasks.
How Air Compressors Work
- Air compressors work by compressing air so that the pressure increases as the volume drops.
- The majority of compressors available on the market use a variant of reciprocating piston technology.
- Every compressor that operates with a reciprocating piston has these components: a crankshaft, a connecting rod, a cylinder, a piston, and a valve head.
- Every kind of compressor has a motor to power the intake of air.
- They also feature two valves at one end of the cylinder, the intake and discharge valves.
- Air enters the intake valve to be compressed by the piston inside the compressor, and then is released through the discharge valve.
- In most models of compressors, air is compressed within a compartment that reduces the available space.
- Most compressors also feature air tanks for storing the compressed air for later use with pneumatic tools that can connect to the compressor’s supply lines.
- The tanks store the air at specified ranges of pressures it is needed to perform work. This also allows the compressor to store air without the risk of exploding.
- The piston in the compressor creates a vacuum through its back and forth motion.
- When it retracts, it the space in front is filled with air which enters from the intake valve.
- When it extends, the air is compressed through the discharge valve, holding the inlets shut. The air is stored inside the tank, and is further compressed as more air fills it up.
Like other machines, air compressors need lubrication in the form of oil. Compressors generally have two categories: oil-lubricated and oil-free.
1. Oil-lubricated compressors have an oil bath that lubricates the bearings and the walls of the inner cylinder. Piston rings are included to keep the oil and air separate, but some amount of oil mixes with the air regardless. The oil bath also helps keep the air cool by absorbing some of the heat from the compression process.
2. Oil-free compressors have permanently lubricated bearings that don’t need an oil bath to keep them lubricated. While they don’t need as much maintenance as oil-lubricated compressors, they produce more noise and put more strain on the motor.
Before you select a compressor, first determine its compressor power. This is how much air a compressor can deliver and is measured in cubic feet per minute (CFM).
Ascertain the efficiency of the compressor pump by looking at the displacement CFM and PSI (pounds per square inch). The displacement CFM is determined by cylinder displacement and motor RPM (revolutions per minute). The PSI rating tells you how much pressure is in the compressor.
Knowing the displacement CFM and PSI rating are necessary so you can find out which tools that particular compressor can support. This is vital to ensure that your compressor and tools are compatible with one another.
There are several establishments with air compressors for sale in Brampton, which means residents of the area don’t need to look too far to find one suitable for the tasks they have in mind. However, it is recommended that you first discuss with the supplier the specifics of the task. This way they can assist you in selecting the make and model you need.