Now everyone should have a common awareness of avoiding formaldehyde pollution in new houses. Recalling that the owner of the building went to junior high school and our family moved to a new house, my parents didn't understand me, let alone what formaldehyde is. After the new house was decorated, the whole family moved in happily. I remember when I woke up every morning with sore throat, dizziness and frequent nosebleeds. Fortunately, after living for more than ten days, I started school and went to live in school. After living in school, all the problems of dizziness and nosebleeds disappeared. I also advised my parents to temporarily move back to the old house. In retrospect, I am afraid that if I want to stay for a few more months, I may not have any more.
Recently, the owner's new house, which had been decorated for three months, was finally handed over. Thanks to the extensive media coverage in recent years, parents also knew the concept of air pollution in decoration, especially for fear that their little granddaughter would be harmed by air pollution. No, just after the house was handed over, they went to the flower and bird market and bought several large pots of green apples, which were placed in every corner of the house.
But I am skeptical of the friend circle science that green apples can remove formaldehyde. In addition to formaldehyde and toluene and other harmful gas pollution, the release of some of these gases from the decoration is also a long process, which will continue to release for several years after decoration.
Ventilation is the most effective way to remove these pollutants in the home.
But ventilation is not omnipotent. For example, when there is no wind outdoors, there is no wind indoors, and the ventilation effect is not good at this time. For example, if you want to turn on the air conditioner in hot summer, you should close the windows, and if it is cold outside in winter, you should also close the windows.
Therefore, in addition to ventilation, we should also take advantage of the power of scientific and technological development to actively remove formaldehyde and harmful gases indoors, so that we can have a healthy indoor breathing environment whether we open windows or not.
The simplest way is to buy an air purifier that can effectively remove harmful gases. And a qualified air purifier can not only effectively remove harmful gases such as formaldehyde, but also reduce indoor pm2.5, remove pollen in the air to protect people with pollen allergy, and pet families can effectively filter pet odor.
Of course, the fresh air system can also be used throughout the year, but the price of fresh air appliances is generally more expensive. At the same time, it is better to carry out the house decoration synchronously. The construction work volume is large, and the home environment will be greatly changed after the construction, which may not be suitable for all house environments, and there are also many consumables for later maintenance and cleaning. In contrast, air purifiers are much cheaper and can be placed everywhere. They can be used when plugged in.
Index analysis of air purifier
Everyone is choosing Air purification sterilizer Pay attention to the following indicators. After understanding, the air purifier will no longer be confused.
1. The air purifier filters the purified air. It is mainly divided into passive filtering and active filtering.
Passive filtering: the filtering method adopted by most ordinary air purifiers. The air is pumped into the machine, and then intercepted and filtered through the internal filter screen. As long as the filter screen meets the standard, dust can be filtered to reduce PM2.5. Built in filter screen for active carbon components can also play a role in reducing formaldehyde, toluene, etc.
Active filtration: purification method adopted by some high-end air purifiers. It not only uses passive filtration, but also actively releases negative ion plasma to sterilize the air, and uses photocatalyst cooling catalyst technology to decompose harmful gases such as formaldehyde and toluene. Therefore, it can not only filter dust to reduce PM2.5, but also has obvious purification effect on harmful gases such as formaldehyde.
Obviously, the active filtering air purifier is more effective, and the effect of formaldehyde removal and air purification is better.
2. Filter screen classification. The filter screen is mainly divided into HEPA, activated carbon, photocatalyst cooling catalyst technology, negative ion silver ion technology and other filters. HEPA can filter smoke particles in the air. Activated carbon mainly adsorbs gaseous pollutants such as formaldehyde. Photocatalyst cooling catalyst technology decomposes harmful gases such as formaldehyde and toluene. Negative ion silver ion technology is used for sterilization.
At present, the most important thing is HEPA, which means High Efficiency Particle Air. According to the specification, it can be subdivided into H10, H11, H12, H13 and H14 from low to high. The higher the grade is, the smaller the molecular aperture that particles can pass through. With good purification effect, the greater the wind resistance, noise and cost are. Therefore, household control is a better choice in a suitable degree. Grade H11-H12 is suitable for household air purification.
3. CADR value. The Chinese name "clean air output ratio" refers to the ratio of clean air output of air purifier obtained by AHAM according to strict test standards. The higher the CADR value, the higher the purification efficiency of the purifier. This value is often used to indicate the purification efficiency of the air purifier.
Of course, the higher the CADR value, the better. The new national standard also clearly stipulates the CADR value of air purifier, and subdivides the CADR value of particulate matter (PM2.5, dust, etc.) and the CADR value of formaldehyde. But we have to say that there are policies and countermeasures. Because the air sources and conditions are different when measuring the CADR value, many brands' CADR test reports, although they are also made by a third party, only focus on the CADR value that performs best in the laboratory, and do not indicate what type of CADR value it is, thus successfully misleading consumers. Therefore, when looking at the CADR value, it clearly indicates that the reliability of particulate matter CADR value and formaldehyde CADR value is higher. Explain that the manufacturer is quite honest. If only one CADR value is marked, there may be something fishy in it.
4. Applicable area. As the name implies, it is the room area applicable to the air purifier. The higher the CADR value, the larger the general purification area. This value can also be used to check whether the CADR value is true or not. If the applicable area of an air purifier is small, but the marked CADR value is high, there is a problem.
5. CCM value. An indicator that is easy to be ignored when purchasing air purifiers is closely related to the CADR value, which is the CCM value. Chinese means cumulative purification amount. It refers to the parameters of the cumulative purification capacity of the air purifier for target pollutants such as particulate matter and gaseous pollutants under rated conditions and specified test conditions. Further speaking, it refers to how long it can be used on the premise that the effective CADR value can be maintained. Statistics are carried out in milligrams (mg). The value is directly proportional to the service life of the filter screen. That is to say, the higher the value, the longer the service life of the filter screen consumables of the air purifier.
The CCM value is the same as the CADR value, and it is also divided into four grades for the durability of particulates and formaldehyde.
Particulate matter (solid pollutants) from low to high: p1, p2, p3, p4;
Formaldehyde (gaseous pollutant) from low to high: F1, F2, F3, F4;
The higher the grade is, the more pollutants are purified and the longer the service life is.
6. Check the noise value. Obviously, the air purifier should be used when needed, no matter in the day or night, so the noise performance is also very important. During the day, the ambient noise is a little higher. At night, when everything is quiet, the air purifier with poor noise performance will become a noise source that seriously affects the rest. Generally, the minimum noise value below 35dB will not affect sleep.
When purchasing air purifiers, we should consider the above six points comprehensively, and combine with the preferences of brands and looks, we can basically select the air purifiers that are easy to use, at least we can avoid many obvious pitfalls.
