How Air Filters Work

The filtration principle of the air filter separates the liquid water and liquid oil droplets in the compressed air, and filters out the dust and solid impurities in the air, but cannot remove the gaseous water and oil.

The removal technologies of particulate matter in the air mainly include mechanical filtration, adsorption, electrostatic dust removal, negative ion and plasma method, and electrostatic electret filtration.

Mechanical filtration generally captures particles in the following three ways: direct interception, inertial collision, and Brownian diffusion mechanism. It has good collection effect on fine particles but large wind resistance. In order to obtain high purification efficiency, the filter element needs to be dense and regularly replaced.

Adsorption is to use the large surface area and porous structure of the material to capture particulate pollutants, which are easy to block, and the removal effect of gas pollutants is more significant;
Electrostatic precipitator is a dust collection method that uses a high-voltage electrostatic field to ionize the gas so that the dust particles are charged and adsorbed on the electrode. Although its wind resistance is small, it has a poor effect on collecting larger particles and fibers, which will cause discharge, and it is time-consuming and easy to clean. Ozone is produced and secondary pollution is formed.

Negative ions and plasma methods work in a similar way to remove indoor particulate pollutants. They both charge particulate matter in LAW Series compressed air filter regulator the air, coalesce to form larger particles and settle down, but the particulate matter is not actually removed, but only attached to nearby surfaces. , which is easy to cause dust to be raised again.

Electrostatic electret filtration effectively blocks particulate pollutants in the air, such as dust, dander, pollen, bacteria, etc. At the same time, the ultra-low impedance ensures the stable operation of the air conditioner and the cooling effect.

Traditional standard filter media are very effective at removing particles above 10 microns. When the particle size of the particles is divided to 5 microns, 2 microns or even sub-microns, high-efficiency mechanical filtration systems become more expensive, and the wind resistance will increase significantly. Filtered by electrostatic electret air filter material, it can achieve high capture efficiency with low energy consumption, and at the same time, it has the advantages of electrostatic dust removal and low wind resistance. Its composition is polypropylene material, which is very convenient for disposal.