With the increase in hazy weather, the market has a lot of air purifier size brands, such as Philips, Sharp, and other such big brands, more from the emergence of a lot of small brands, consumers in the face of the many air purifier brand, do not know how to correctly select an air purifier products, air purifier maintenance and what to pay attention to?
Why use an air purifier?
We humans live indoors 80% of the time, and with the constant development of high technology, our indoors are becoming more and more full of bacteria, microorganisms, and toxic germs. That's why air purifiers are gaining a lot of popularity and are increasingly being used in North America, Australia, and Japan, countries without serious environmental pollution. A good air purifier can remove, filter, and kill a large number of harmful bacteria, toxic microorganisms, and particles that are invisible to the naked eye. The use of a high-quality air purifier is especially necessary for health-conscious people, especially those with elderly people, children, and pregnant women at home.
What are the sources of pollution that affect indoor air quality?
Five types of pollutants affect indoor air quality: - products of fuel combustion, such as carbon dioxide, carbon monoxide, nitrogen oxides, alkanes and aldehydes, and other pollutants; - the use of chemicals and other aerosols, such as pesticides, deodorants, mousse, hairspray, and so on; the use of electronics, such as household electrical appliances, laser printers, photocopying machines, and so on; and releases of building and decorative materials, such as masonry, cement, asbestos products, plywood, particle board, plastic veneer, paint and coating, carpet, etc. will release a large amount of toxic and harmful gases; products of human activities, such as respiration, skin secretions, indoor pet floral discharges and smoking.
What is a HEPA filter?
HEPA is the abbreviation of high-efficiency particle air filters, the Chinese name is the high high-efficiency air filter, and the filtering effect of particles above PM0.3 effect is relatively intuitive, to better improve its purification efficiency, thea a need for regular replacement. If it is not regularly replaced, it will produce secondary pollution. And the dust collection rate of HEPA filtration technology will drop rapidly in heavily polluted areas.
What is activated carbon?
Activated carbon is a hydrophobic adsorbent made from carbonaceous materials, which is activated and carbonised at high temperatures. Activated carbon contains a large number of micropores, has a huge specific surface area, and can effectively remove colour, odour, most organic pollutants in secondary effluent water and some inorganic substances, including some toxic heavy metals. It is mainly divided into wood-based activated carbon, fruit shell activated carbon, coal-based activated carbon, petroleum-based activated carbon, and recycled carbon.
Types of air purifiers
Filtration adsorption type: the use of porous filter material (such as non-woven cloth, fibre filter paper) on the air of suspended particles, toxic and harmful gases adsorption, to purify the air. (Currently the strongest adsorption capacity of the filter material for HEPA high-density air filter material), such as the Yadu Hercules series purifier.
Electrostatic dust collection type: through the corona discharge to make the air pollutants charged, the use of dust collection devices to capture charged particles, to achieve the purpose of purifying the air.
Composite: the use of filtration and dust collection at the same time.
Air purifier maintenance
Pre-filter; The general machine back cover is open, and the first layer of the filter is generally pre-filter. Pre-filter used after a long time, will gather some hair, cotton wool, dust, etc., thus affecting the effect of air intake and air purification, so if it can be cleaned, it is best to take the water will be rinsed clean of pollutants, if it can not be cleaned the material, you can take the vacuum cleaner to the dust intercepted in the top of the dust, cotton wool sucked away.
HEPA filter; HEPA filter is the core of the air purifier, mainly to intercept particulate matter, viruses, bacteria and so on. Be sure to replace the HEPA filter at regular intervals according to the use cycle of the filter, normal HEPA filter material, in the PM2.5 index of 300 or less, the HEPA filter should be replaced once every three months to half a year, even if the environment is good enough, the HEPA filter must be replaced once a year.
Wash filters; some filters of branded air purifiers use wet purification technology, and regular washing of filters can maintain high purification efficiency and increase the use cycle of HEPA, activated carbon and other filters.
Photocatalytic filters; photocatalytic filters should be rinsed regularly and used after washing, which can enhance the ability of photocatalysts to decompose pollutants.
Dust accumulation in the air inlet and outlet; air purifiers in the long term use the process, the location of the air inlet and outlet is the most likely to accumulate dust and after a long time will affect the effect of purification, become a source of pollution, should be regularly wiped with a rag to avoid the accumulation of dust.
Activated carbon filter; The activated carbon filter in the air purifier plays the role of adsorbing formaldehyde, odour, etc., so six months to a year to replace, due to the adsorption of pollutants will reduce the adsorption capacity of the carbon molecules, so it must be replaced, otherwise there is no effect, in turn, will form a source of pollution.
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