It used to be wrong! Air purifiers should be used in order to function
In recent years, smog has almost become a hot topic in the world. Once in winter, the problem of smog has become more and more serious. The whole of North China is shrouded in a cloud of smoke, but it does not give people a feeling of poetry. The only worry is It is a health problem.
Winter fog is known as the “winter killer”. The fog looks mild, but it contains a lot of pathogens such as bacteria and germs. In addition, industrial waste gas, automobile exhaust and other pollutants adhere to these water droplets. These substances will be on the human body. The respiratory tract is harmful. If it enters the lungs, it is easy to cause upper respiratory tract infection, acute tracheobronchitis and pneumonia.
Many families choose to buy an top 10 best home air purifiers to solve indoor air quality problems, but many people have many misunderstandings when using air purifiers. For example, if you have an air purifier, you can do it once and for all. Is this the case? Do you have any misunderstandings below?
The bigger the CADR, the better?
The most direct way to judge the strength of an air purifier is to look at the CADR value. The full name of the CADR English is called the Clean AirDelivery Rate. The higher the CADR value, the higher the purification efficiency of the purifier and the greater the amount of clean air provided.
The higher the CADR value, the higher the efficiency of purifying the air, but it also means that the machine needs more power, consumes more power, is larger, and generates very loud noise. Therefore, when choosing an hot sale air purifier, do not blindly choose a CADR value, you must choose according to your actual situation.
As far as the domestic home environment is concerned, each room is generally between 20 and 30 m2 in size. In this range of use, an air purifier of 230 to 360 m/h should be selected. The living room area is generally 30~55m2, and it is more suitable to choose 350~550m/h. Choosing the air purifier with the appropriate CADR value can minimize the energy consumption and ensure the air purification efficiency is not bad. It is quiet enough.
Can the air purifier remove the formaldehyde?
In daily life, we have to deal with formaldehyde. For example, newly renovated rooms usually have excessive formaldehyde content, and the other is that indoor new furniture will also increase the formaldehyde content. Long-term exposure to formaldehyde can cause chronic poisoning, which can even cause cancer. Therefore, removing formaldehyde from the room is the first problem.
The air purifier has always been considered as an artifact of formaldehyde removal. The principle is that it has a layer of activated carbon filter to reduce the formaldehyde content in the air by the adsorption of activated carbon. It is undoubted that the air purifier can remove formaldehyde, but this is not the best way to purify formaldehyde.
Many people have not conducted in-depth research on formaldehyde, only know its harm, but do not know that the volatilization period of this cargo is as long as 10 to 15 years, and the high evaporation period is also 2 years, and the activated carbon filter in the air purifier is generally used 20 It will reach saturation in the day or so. At this time, the effect of adsorbing formaldehyde has been lost. If the filter is not replaced in time, formaldehyde poisoning may occur.
In addition, indoor formaldehyde can not be cleaned in a short time, low concentration of formaldehyde will also endanger human health, the most appropriate method is to throw away the formaldehyde-dissipating pollutants, and open the window as much as possible under conditions.
Do not replace the filter for a long time
The working principle of the air purifier is similar to that of the lungs. The contaminated air is sucked in first, then adsorbed and filtered through the body, and finally the treated air is released. Among them, adsorption and filtration play a vital role, and the difference in air purifiers is mainly at this stage.
Air purifiers typically use a three-layer filter to filter and adsorb. The first layer is a primary filter that absorbs dust and dust particles and protects other filters. The second layer is an activated carbon layer for removing formaldehyde and odor from the air. The third layer is the HEPA layer, which can stick to PM2.5 dust, bacteria, germs and other pollutants.
When the air purifier is working, the three-layer filter screen is continuously filtering and adsorbing pollutants. After a period of use, the dust collection amount in the filter screen is saturated, and the adsorption performance is obviously reduced, and the accumulation on the filter screen is accumulated. Contaminants are easily blown back into the room, causing secondary pollution.
Some air purifiers on the market have a filter replacement reminder function, but most of them still need to be judged by users. If you are in the South, there are very few empty nets in a year, so you don’t need to change them often. If you are in North China, the air pollution is more serious, the filter must be replaced frequently, try to change it every six months, or even shorter, in order to achieve a better purification effect.
Over-reliance on air purifiers
Many people are used to opening and closing doors and windows for a long time when using empty nets, and relying too much on air purifiers, which is actually very unhealthy for health.
The air purifiers on the market do have a very significant effect on both formaldehyde and PM2.5, but most of them do not have the function of removing carbon dioxide. If a person stays in a tight air chamber for a long time, it will cause the concentration of carbon dioxide in the room to rise continuously. When a certain concentration is reached, there will be discomfort, and in the long run, the biological clock will be disordered. Therefore, even if the air purifier is turned on, it is necessary to ensure regular ventilation.
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