Mechanical filtration
Generally, particles are mainly captured in the following 3 ways: direct interception, inertial collision, Brownian diffusion mechanism, which is effective in collecting fine particles but has a large wind resistance, in order to obtain high purification efficiency, the cartridge needs to be dense and regularly replaced.
Adsorption
Adsorption is the use of large surface area and porous structure of materials to capture particulate pollutants, easy to block, used for gas pollutants removal effect is more significant.
Electrostatic precipitation
Electrostatic dedusting is a dust collection method that uses a high voltage electrostatic field to ionize the gas so that the dust particles are electrically adsorbed onto the electrodes.
Negative ion and plasma method
Negative ion and plasma method and the removal of indoor particle pollutants work similarly, both by making the airborne particles charged, agglomerate to form larger particles and settle, but the particles are not actually removed, but only attached to the nearby surface, easy to lead to dust again.
Electrostatic electret filtration
3M “high-efficiency electrostatic air filter” as an example, using a breakthrough carrying permanent electrostatic filter material, effectively blocking air particles greater than 0.1 microns of pollutants, such as dust, hair, pollen, bacteria, etc., while ultra-low impedance to ensure stable operation of air conditioning and cooling effect. In addition, the deep dust tolerance design ensures a longer service life. Conventional standard filter media can very effectively remove particulate matter above 10 microns. When the particle size is in the range of 5 microns, 2 microns or even submicrons, efficient mechanical filtration systems become more expensive and wind resistance increases significantly. Electrostatic electret material filtration can achieve high capture efficiency with low energy consumption, while combining the advantages of electrostatic dedusting with low air resistance, but without the need for external voltage of tens of thousands of volts, so it does not produce ozone, and because the composition of the polypropylene material, it is easy to dispose of.
Plasma catalytic purification technology
In this technology, the O³ produced by the upper level of purification is decomposed into oxygen ions, and the oxygen ions quickly produce oxidation reactions with various odor molecules under the action of catalysts, degrading the odor molecules into small molecules such as CO2 and H2O, which are odorless and non-toxic.
High-energy ion purification technology
Through this technology, the molecular bonds of odor molecules are broken under the action of high-energy ions, and they become small molecules with no toxicity and no smell. The O³ produced in this purification technology is the key element of the subsequent purification technology.
Electrostatic precipitation purification technology
When the charged dust passes through the high voltage electrostatic field, according to the principle of “positive and negative attraction”, the dust will be adsorbed on the opposite polarity of the aluminum sheet, which plays an efficient role in dust absorption. At the same time, harmful microorganisms such as bacteria, viruses, molds, etc. will die due to cell membrane expansion under high voltage ionization and high voltage static voltage. The dust removal efficiency and ozone controllability are greatly improved by the application of an optimized high voltage power control technology, the current-voltage double closed-loop control technology.
Post time: Aug-31-2022