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source:Industry news release time:2021-11-16 Hits: Popular:aromatherapy diffuser direct sales
The air purification technologies include: adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, superstructure light mineralization technology, HEPA high efficiency filtration technology, electrostatic dust collection technology, etc.; material technology mainly includes: photocatalyst, activated carbon, synthesis Fiber, HEPA high-efficiency material, negative ion generator, etc. So what are the types of air purifiers?
What are the types of air purifiers? Generally speaking, the working principle of air purifiers can be divided into three types: passive, active, and hybrid. According to the air purifier technology for removing 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. The following is a detailed description:
Mechanical filtration
Generally, particles are captured in the following four ways: direct interception, inertial collision, Brownian diffusion mechanism, screening effect, which has a good collection effect on fine particles but large wind resistance. In order to obtain high purification efficiency, the resistance of the filter is relatively large, and the filter The net needs to be dense, resulting in a reduced life span, and needs to be replaced regularly.
High-voltage electrostatic dust collection
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 the wind resistance is small, it has a poor trapping effect on larger particles and fibers. Form secondary pollution.
"High-voltage electrostatic dust collection" is a method that can not only ensure the air volume, but also absorb fine particles. This is a way to charge the particles by applying a high voltage before passing through the filter element, so that the particles are "easy to be adsorbed" to the filter element under the action of electricity.
The high-voltage electric dust collecting part originally applied a high voltage to the two electrodes and charged the passing dust when the two electrodes were discharged. Most dust is originally neutral or has a weak charge, so the filter element can only filter out dust that is larger than the mesh. But shrinking 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), the dust can be captured reliably.
Electrostatic electret filter
Relatively mechanical filtration can only effectively remove particles above 10 microns, and when the particle size is divided into 5 microns, 2 microns or even sub-micron range, high-efficiency mechanical filtration systems will become more expensive, and Wind resistance will increase significantly. Filtered by electrostatic electret air filter material, it can achieve high capture efficiency with low energy consumption, and it also has the advantages of electrostatic dust removal and low wind resistance. However, it does not need to be connected to an external voltage of tens of thousands of volts, so ozone will not be generated. Its composition is made of polypropylene, which is very convenient for disposal.
Electrostatic precipitator
can filter dust, smoke and bacteria smaller than cells to prevent lung disease, lung cancer, liver cancer and other diseases. The most harmful to the human body in the air is dust less than 2.5 microns, because it can penetrate cells and enter the blood. Ordinary purifiers use filter paper to filter the dust in the air, which can easily block the filter holes. The dust not only has no sterilization effect, but also easily causes secondary pollution.
electrostatic sterilization
Using a high-voltage electrostatic field of about 600 volts, it can instantly and completely kill bacteria and viruses attached to the dust, and prevent colds, infectious diseases and other diseases. The sterilization mechanism is to destroy the four polypeptide chains of the bacterial capsid protein and damage the RNA.
In the relevant national "Air Purifier" standards, an air purifier is defined as "a device that separates and removes one or more pollutants from the air. A device that has a certain ability to remove pollutants in the air. Mainly refers to the room. The single air purifier used and the modular air purifier in the centralized air conditioning ventilation system.
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