We buy air purifiers, mainly for indoor pollutants. There are many sources of indoor air pollutants, which may come from indoors or outdoors. Pollutants come from many sources, such as bacteria, molds, dust mites, pollen, household cleaners, as well as household cleaning products, insecticides, paint removers, cigarettes, and also those released by burning gasoline, natural gas, wood or burning carbon Heavy smoke, even decoration materials and building materials themselves are also very important sources of pollution.
A study by the European Union showed that many common household items are the main sources of volatile organic compounds. Many consumer products and degradable materials also emit volatile organic compounds, of which formaldehyde, benzene, and naphthalene are the three most common and worrying three harmful gases. In addition, certain organic compounds can react with ozone to produce secondary pollutants, such as microparticles and ultrafine particles. Certain secondary pollutants will significantly reduce indoor air quality and give people a pungent smell. Simply put, indoor air pollutants are divided into three categories:
1. Particulate matter: such as inhalable particulate matter (PM10), the smaller particles can be inhaled PM2.5 from the lungs, pollen, pets or human sheds, etc.;
2. Volatile Organic Compounds (VOC): including various peculiar smells, formaldehyde or toluene pollution caused by decoration, etc.;
3. Microorganisms: mainly viruses and bacteria.
The air purifierscurrently on the market can be divided into the following types according to the purification technology:
1.HEPA high efficiency filtration
HEPA filter can efficiently filter 94% of the particulate matter above 0.3 micron in the air, and it is recognized as the best high-efficiency filter material internationally. But its disadvantage is that it is not clear, and it is easy to damage and must be replaced regularly. The cost of consumables is huge, the fan needs to drive the air to flow, the noise is large, and it cannot filter the inhalable lung particles with a diameter of less than 0.3 microns.
PS: Some products will focus on product optimization and upgrading, such as airgle. They optimize and upgrade the existing HEPA nets on the market, and develop cHEPA filters that can remove 0.003 micron inhalable particles as high as 99.999%. This is currently one of the few good results in the industry, and the effect is more authoritative in numerical testing.
In addition, I have to say the following. Airgle is a relatively professional brand among European and American brands. It is used by the royal family and some government and enterprise institutions. It is mainly available. The design process advocates conciseness and clarity. It is integrated into the home life and is more elegant. Of one. The exterior and internal filters are made of metal, and the quality can far exceed the plastic products on the market. In terms of performance, you can look at the online evaluations and evaluations. They have been doing these brands for a long time, and the industry has accumulated a lot. There are also third-party tests or inspection reports, which have high stability. Because I have allergic physique, pollen allergies, allergic rhinitis, a lot of problems, so I have been using this brand of products, it is worth recommending.
2. Activated carbon filtration
It can deodorize and remove dust, and physical filtration is pollution-free. It needs to be replaced after the adsorption is saturated.
3. Negative ion filtration
The use of static electricity to release negative ions to absorb dust in the air, but can not remove harmful gases such as formaldehyde and benzene. The negative ions will also ionize oxygen in the air into ozone. Exceeding the standard is harmful to the human body.
4. photocatalyst filtration
It can effectively degrade toxic and harmful gases and kill a variety of bacteria. The colleagues also have the functions of deodorization and anti-pollution. However, ultraviolet light is needed, and it is not pleasant to coexist with machines during purification. The life of the product also needs to be replaced, which takes about one year.
5. Electrostatic dust removal technology
It is more convenient to use, no need to replace expensive consumable parts.
However, too much dust accumulation or reduced electrostatic dust collection efficiency can easily lead to secondary pollution.
Post time: Dec-01-2020