Air purifier is also called the machine, the air cleaner, fresh air purifier, refers to the adsorption and decomposition or transformation of various air pollutants (generally include PM2.5, dust, pollen, peculiar smell, formaldehyde, decoration pollution, such as bacteria, allergens, etc.), effectively increase the air cleanliness of products, mainly divided into residential, commercial, industrial, building.
There are a variety of different technologies and media in an air purifier that enable it to provide clean and safe air to the user. Commonly used air purification technologies include adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, superstructure photomineralization technology, HEPA efficient filtration technology, electrostatic dust collection technology, etc. Material technology mainly includes: photocatalyst, activated carbon, synthetic fiber, HEPA efficient material, negative ion generator and so on. Most of the existing air purifiers are compound, that is, a variety of purification technologies and material media are used at the same time.
The working principle of
Air purifier is mainly composed of motor, fan, air filter and other systems. Its working principle is as follows: Machine motor and fan to make indoor air circulation flow, the air pollution through the air in the machine filter after the various pollutants removal or adsorption, some models of air purifier in outlet with anion generator (anion generator of high pressure work dc negative high voltage), the air ionization, produce a large number of negative ions, the breeze fan sent out, The formation of negative ion airflow, to achieve the purpose of cleaning and purifying the air.
Passive adsorption filter type purification principle (filter purification class)
The main principle of passive air purifier is: the air is pumped into the machine by the fan, and the air is filtered through the built-in filter screen, which can mainly filter dust, odor, toxic gas and kill some bacteria. The filter screen is mainly divided into: particulate matter filter screen and organic filter screen. Particulate filter screen is divided into coarse effect filter screen and fine particulate filter screen.
The quality of the fan and the filter determines the effect of air purification. The location of the machine and the layout of the room will also affect the purification effect.
Active purification principle (no filter type)
Active principle and principle of passive air purification of air purifier fundamental difference is that the active air purifier get rid of the limitation of the fan and mesh, not passively waiting for indoor air is pumped into the purifier filter purification, but effective and active purification sterilization factors that are released into the air, the characteristics of the spread through the air, Reach every corner of the room to purify the air without dead Angle.
On the market, the purification and sterilization factor technologies mainly include silver ion technology, negative ion technology, low temperature plasma technology, photocatalyst technology and net ion group ion technology, etc. The biggest defect of these products is the problem of excessive ozone release.
Dual purification class (active purification + passive purification)
This kind of purifier is actually a combination of passive purification technology and active purification technology.
