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Go to dig treasure and take a look, remember that cheap is not good, and good is not cheap.
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In addition to chemical harmful gases, it must be a professional manufacturer, AllerAir Air Air Purifier Canada.
Its filtration system is very thick, such as 8000 series poison filter tank kg, plus HEPA, the total weight of the filter media is 21kg! It also has good sealing, in addition, it adopts the structural design of the cylindrical shell to fit the cylindrical filter element, plus the progressive diagonal filtration technology (pdf) that can greatly increase the air distance, and the air volume is very sufficient, so the effect of removing chemical harmful gases is very powerful. It is a household air purifier that can be used in heavy, special, and complex polluted environments such as chemical plants.
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It is best to pick a big brand for air purifiers, big brands, good purification effect, it is recommended that you go to Haier, Gree and other specialty stores to see.
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I only know that the Canadian Allerair air purifier I bought at home has a very large and heavy canister, and other brands of purifiers fail on this basis, but it is a little expensive.
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The safest and most reliable way for air purifiers to remove chemically harmful gases is to use activated carbon technology.
The air purifier in the market mainly involves three functions, that is, to remove harmful chemical pollutants in the room, such as formaldehyde, benzene, etc., and to remove the volumetric solid harmful substances in the room, such as the suspended particulate matter, etc., and then there is the function of sterilization and disinfection. Song Guangsheng said that at present, 70%-80% of the purifiers in the market can only achieve a single function, most of them are to remove the volume of suspended particulate matter in the air, and the purifier itself has high technical requirements for the purification of harmful chemical gases, and the purifiers in the market can realize the combination of two or even three functions, less than 20%.
For the adsorption of harmful substances, Chen Xi of Sender, which launched the fresh air purifier, said that consumers need to be reminded that the adsorption of most activated carbon only has an effect within a certain period of time, and after reaching saturation, the activated carbon adsorption function will fail. Song Guangsheng also said that if you simply add a layer of activated carbon to the filter screen, or use a thin layer of carbon structure, it is basically useless. "It's not uncommon for two days to have no effect.
Purifying the air should also be a long-term process. ”
In terms of air purifier activated carbon technology, the industry is recognized as the most niubility internationally is allerair, which is a professional air purifier manufacturer in Canada that does industrial and medical air purifiers, and its purifier has a feature, that is, each machine will have an anti-gas anti-gas filter tank, which uses high-quality modified granular activated carbon based filter materials. Moreover, a certain proportion of special stabilizers are added to it, so it has a very good adsorption and purification effect on formaldehyde, sulfur dioxide, nitrogen oxides and other chemically harmful gases. Therefore, when it comes to the best air purifier for removing formaldehyde and other harmful chemical gases, Allerair is the best place to go.
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Answer: The air purifier mainly removes particulate matter in the air, including allergens, indoor, etc., and can also solve the problem of volatile organic compound air pollution caused by decoration or other reasons, including benzene, xylene, TVOC, ammonia, and SO2. Due to the persistent and uncertain nature of the release of air pollutants in relatively enclosed spaces, the use of air purifiers to purify indoor air is one of the internationally recognized ways to improve indoor air quality.
Air purifiers, also known as "air cleaners", air purifiers, and purifiers, refer to those that can adsorb, decompose or transform various air pollutants (generally including dust, pollen, odor, formaldehyde and other decoration pollution, bacteria, allergens, etc.).
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As far as indoor is concerned, there are two main parts of chemical harmful gases: one is formaldehyde, benzene, xylene, TVOC, ammonia, radon and other volatile daily necessities such as decoration pollution, furniture, household appliances, etc., and the other is sulfur dioxide and nitrogen oxides in haze. Compared with inhalable particulate matter and microorganisms, chemical harmful gases are very difficult to remove pollutants because the aerodynamic equivalent diameter of chemical harmful gas molecules is very small, less than thousandths of a micron.
Therefore, only a professional air purifier can remove it. Allerair, for example, has an anti-virus filter inside its machine, which is used to remove chemically harmful gases and odors. Ordinary purifiers are basically not good at removing chemical harmful gases.
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Basically, all kinds of different chemical harmful gases found at present can be removed. Such as nitric oxide, nitrogen dioxide, hydrogen sulfide, sulfur monoxide, sulfur dioxide, formaldehyde, benzene, etc.
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Sulfur oxides, nitrogen oxides, bad things.
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The physical effect is good, but the effect is poor, and the chemical effect is good, but the reaction with some other substances can be harmful to the body.
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Hello: If you are not comfortable with this taste, you can use the "activated carbon" ring filter in the middle, which will not affect the purification effect, it is recommended that you do this!
Note: The glue injection process makes the outer core as sour and cool when it is damp. Can't be turned on with a humidifier at all.
Hope it helps! Good luck!
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If the air purifier is not cleaned for a long time, it will cause secondary pollution.
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Some users will think that the smell of activated charcoal is sour, but it is not the same.
After the purifier is used for a long time, it does produce a sour taste. However, the time it takes for different filter structures to produce a sour taste varies greatly. Generally, purifiers with charcoal cloth (most brands on the market are used, charcoal cloth has a good initial effect, but it is not durable, to achieve the same CADR value, the cost of using charcoal cloth is low), most of them will produce a sour smell in 1 2 months.
The main thing is that a lot of glue is used for the charcoal cloth, generally there is 70 carbon powder + 30 hot melt adhesive powder to stick the carbon powder on the filter cloth, and the thickness of the carbon layer is only about about. In the summer of high temperature and high humidity, it is especially easy to produce a sour taste, because the bacteria with high humidity and high humidity are easy to multiply on the filter cloth, ferment and decompose the glue, and produce a sour taste. In addition, the carbon layer is too thin, and it will be saturated quickly and will fail in one or two months.
There are also a small number of machines that still use honeycomb carbon, such as Amway Yixin, Bruyar 510 (the old filter is, ** does not seem to be honeycomb carbon), Forest Princess 03 and other models, using granular activated carbon, this model filter screen is large, thick and heavy. The cost of the filter is relatively high. But it can be used for a year or two before it develops a sour taste.
Because granular activated carbon does not use glue, the carbon layer is thick, and the service life of the filter element is relatively long.
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According to the power of the fan, the space arrangement of the filter, if the wind is too strong, the air discharged after the filter will still have polluting substances, only by inhaling the air again, through the filter, in order to eliminate the pollutants to the greatest extent. In the case of air flow and open windows for ventilation, the aldehyde removal function of the purifier is basically useless, and it has become an incompetent vacuum cleaner to a large extent. Because of natural ventilation, the air is flowing, and the air that is sucked into the purifier may be carried out of the outdoors by the fluidity of natural ventilation when it is discharged from the evolutionary device, that is, the effect of the purifier is zeroed.
Therefore, the function of the purifier will only be useful in a closed environment with poor air flow. Only then can the purifier repeatedly wash the air through the filter, just like washing vegetables. The advertised aldehyde removal rate of the purifier is to work in a confined space, repeatedly clean the air, and after a period of time, the formaldehyde concentration decreases sharply.
Only by letting the purifier repeatedly clean the same piece of air can the purpose of purifying the air be achieved, otherwise once it is in the case of natural ventilation, the air cleaned by the purifier is not the same piece of air, and it may be sent out of the outdoor area just after cleaning. It is also possible that the filter is too dirty, just like the water for washing hands is getting dirtier and dirtier, and if the filter is not updated, the purifier itself is a new source of pollution!!
The purification efficiency of each inlet and outlet air of the purifier can be verified by a small experiment:
It is to put the natural gas pipe against the purifier, open up some natural gas, let the purifier inhale, and then smell the exhaust gas. Basically, it shows that the purification efficiency of the purifier is very low.
It needs to be repeated many times. If the space is larger and the natural gas is widely distributed in the space, the purification efficiency of the purifier will be lower, and the purification time will be longer, and for people, it is impossible to wait that long, it is better to open the window for ventilation.
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It's physical, strainer filtering. Passive adsorption!
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