Oil free air compressor, also known as oil-free air compressor, is the core equipment in the gas source device. It can convert the mechanical energy of the prime mover (usually the electric motor) into gas pressure energy, providing power for various occasions that require compressed air.
There are various types of oil-free air compressors. Taking the common micro reciprocating piston type as an example, the motor drives a symmetrical distributed crank rocker mechanical structure with a single axis. The main moving pair is the piston ring, and the auxiliary moving pair is an aluminum alloy cylindrical surface. The moving pairs rely on the piston ring for self lubrication without adding any lubricant. The compressor undergoes periodic changes in the volume of the cylindrical cylinder through the reciprocating motion of the crank rocker, thereby achieving the processes of suction, compression, and exhaust, compressing the air and sending it into the air storage tank.
Oil free air compressors mainly compress the inhaled air through mechanical components such as pistons, screws, or turbines, and then output it as high-pressure gas. Its key feature is that oil is not used as a lubricating or cooling medium in the compression chamber, so the oil does not come into direct contact with the compressed air. The specific work process includes:
Air intake filtration: Air is drawn in through the air intake and undergoes preliminary filtration and dust removal through a filter screen to ensure high air quality entering mechanical components.
Cylinder compression: Air that has been preliminarily filtered enters the cylinder and is driven back and forth by the crankshaft to achieve gas compression.
Cooling system: Due to the large amount of heat generated by gas compression, oil-free air compressors are usually equipped with cooling systems (such as heat sinks and cooling fans) to reduce the temperature of mechanical components and ensure stable operation of the equipment.
Gas separation: During the compression process, water vapor in the air condenses into liquid water, which may also contain oil vapor or other impurities. Condense water vapor into liquid water through a cooler and discharge it, then filter out oil vapor and solid particles through a filter to ensure the purity of the output gas.
Compressed air output: The processed compressed air is sent to a storage tank for storage, and then transported to the place where it needs to be used through pipelines.