The purification principle of air purifier

　　Air pollution has a severe impact on the lives of residents in many places. After everyone uses the air purifier, there has been a great improvement. The benefits of air purification are: resistance to smog, smoke and dust removal, sterilization, elimination of odor, formaldehyde removal, etc. to purify various harmful substances in the room. Since it has so many benefits, do you know the principle of its purification?

　　1. Mechanical filtration:

　　HEPA (High efficiency particulate air Filter), which means high efficiency air filter in Chinese, a filter that meets the HEPA standard, has an effective efficiency of 99.998% for 0.3 microns. The characteristic of HEPA is that air can pass through, but fine particles are Failed to pass. The HEPA filter consists of a continuous stack of sub-glass fiber membranes folded back and forth to form a wavy gasket to place and support the filter medium.

　　2. Adsorbent filtration:

　　Activated carbon layer activated carbon is a porous carbon-containing material with a highly developed pore structure. The porous structure of activated carbon provides it with a large amount of surface area, which can be fully contacted with gas impurities), thus endowing activated carbon with unique adsorption properties , making it very easy to achieve the purpose of absorbing and collecting impurities. Just like magnetism, all molecules are attracted to each other. Adsorbs many harmful gases in free state.

　　3. Photocatalyst catalysis method:

　　When the air passes through the photocatalytic air purification device, the photocatalyst itself does not change under the irradiation of light, but the substances that can promote the chemical reaction. The harmful substances in the air, such as formaldehyde and benzene, are degraded under the action of photocatalysis, resulting in non-toxic and non-toxic substances. The harmful substances are removed, and the bacteria in the air are also removed by the ultraviolet light, so the air is purified.

　　4. Electrostatic purification:

　　It adopts the working principle of high-voltage electrostatic adsorption and dust removal. The electrostatic type adopts the working principle of high-voltage electrostatic adsorption and dust removal. Under the action of high-voltage static electricity, the cathode line in the electrostatic field produces corona discharge, and a large number of negative ions are generated in the corona layer, and the negative ions continuously move to the anode under the action of the electrostatic field. When the dust in the air passes through the electric field, the dust is charged by the collision of negative ions, and the charged dust is also affected by the electrostatic field and moves to the anode (dust collecting pole), and releases the charge after reaching the anode. Simply put, it uses static electricity to absorb dust!

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