Working classification of air purifiers.Car Air purifier price

　　According to the air purifier's removal technology for particulate matter in the air, there are mainly mechanical filter type, electrostatic electret filter type, high-voltage electrostatic dust collection, negative ion and plasma method.

　　Mechanical filtration

　　Generally, particles are mainly captured in the following four ways: direct interception, inertial collision, Brownian diffusion mechanism, and screening effect. It has good collection effect on fine particles but large wind resistance. In order to obtain high purification efficiency, the resistance of the filter screen is large, and the filter The mesh needs to be dense, which reduces the lifespan and needs to be replaced regularly.

　　High voltage electrostatic dust collection

　　The dust collection method uses a high-voltage electrostatic field to ionize the gas so that the dust particles are charged and adsorbed on the electrode. Although the wind resistance is small, the effect of trapping larger particles and fibers is poor, which will cause discharge, and cleaning is troublesome and time-consuming, and it is easy to generate ozone. Form secondary pollution.

　　"High-voltage electrostatic precipitator" is a method that not only ensures the air volume but also absorbs fine particles. This is how the particles are charged with a high voltage before they pass through the filter element, so that the particles are "easy to adsorb" to the filter element under the action of electricity.

　　The high-voltage electrostatic dust collection part originally applies a high voltage to the two electrodes, and when the two electrodes are discharged, the passing dust is charged. Most of the dust is originally neutral or weakly charged, so the filter element can only filter dust larger than the mesh. However, narrowing the mesh of the filter element will cause blockage. The high-voltage electrostatic dust collection method can make the dust charged. Under the action of electricity, it is adsorbed on the specially processed and permanently charged filter element. Therefore, even if the mesh of the filter element is too large (coarse), it can indeed capture the dust.

　　Electrostatic electret filter

　　Relative mechanical filtration can only effectively remove particles above 10 microns, and when the particle size of the particles is removed to the range of 5 microns, 2 microns or even sub-microns, high-efficiency mechanical filtration systems will become more expensive, and Wind resistance will increase significantly. Filtered by electrostatic electret air filter material, high capture efficiency can be achieved with low energy consumption, and at the same time, it has the advantages of electrostatic dust removal and low wind resistance, but no external voltage of tens of thousands of volts is required, so no ozone is generated. Its composition is polypropylene material, which is very convenient for disposal.

　　Electrostatic precipitator

　　It can filter dust, smoke and bacteria smaller than cells, preventing lung disease, lung cancer, liver cancer and other diseases. The most harmful to the human body in the air is the dust smaller than 2.5 microns, because it can penetrate the cells and enter the blood. Ordinary purifiers use filter paper to filter dust in the air, which is easy to block the filter holes. Dust not only has no sterilization effect, but also easily causes secondary pollution.

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