Air purifier good quality, the key lies in purification technology. Purification of how a cleaner, clean technology and the machine used has a direct relationship. For some knowledgeable people, they will not only ask how the quality of the air purifier, more will want to know the air purifier technology used. So, the current air purifier technology, which has several of it? What kind of effect purification technology air purifier is best? HEPA filter: one of the most popular technology used in air purification. Standard HEPA filters able to absorb 99.7% of 0.3 micron size aerosol (0.3 micron filter size is the most difficult). Its advantage is safe and effective, is to remove the air of particulate contamination of the most important technologies, but the drawback is that only filter out suspended particles, can not filter out harmful gases. Use HEPA air cleaners have a good air-tight design, otherwise the air will bypass the filter and lose filtering effect.
From the current air purifier purification technology used term, it can be divided into passive, active, active-passive hybrid three. From the aspect of fine mechanical filter division, electrostatic electret filter type, high-pressure electrostatic precipitator, negative ion and plasma method. The most common purification techniques are generally used in air purifiers, compared with HEPA filters, activated carbon, charged ions, photocatalyst four.
Activated carbon filter: activated carbon air purifier is an internationally recognized high adsorption material, as early as “a war”, it is applied to gas masks. Activated carbon adsorption technology are: physical adsorption and chemisorption. Physical adsorption of organic molecules for the gas (such as benzene and other TVOC) by activated carbon adsorption of its porous structure of these macromolecules contaminants, chemical adsorption mainly for small molecules such as gaseous pollutants (formaldehyde, hydrogen sulfide, nitrogen oxides, etc. ).
Charged ion purification: There are nano-ion technology and water purification technology Plasmacluster two kinds. Nano water plasma technology is mainly used for air filtering, the advantage is capable of sterilization charged ions adsorbed on the surface of dust adsorption can help filter fine dust particles, and humidified air can play the role of long-term use of air-dry cycle. Plasmacluster purification technology is another important species, Plasmacluster generating device via a high voltage discharge to release the nature identical positive and negative groups of floating in the air fungi, viruses and other harmful substances surrounded decomposed to purify the air effect .
Photocatalyst purification technology: a kind of nanoscale titanium dioxide having photocatalytic function collectively optical semiconductor material represented, can degrade toxic gases in the air, but the purification efficiency is very low, and the study shows that the photocatalytic process will produce toxic mid product. However, just from the dust sterilization standpoint, this technology is still relatively reliable.
As can be seen from the above, the air purifier technology advantages and disadvantages, but mainly in the HEPA filter, activated carbon filters purify the two kinds of technology-based, and purification technology advantages are more prominent.