A: CADR&CCM is a measure of the purification of purifiers.
Best large room air purifier for dust have two of the most critical indicators to look at before buying, one is CADR and the other is CCM.
CADR represents the total amount of clean air output after the dirty air is filtered by the purifier in a certain period of time. The larger the number, the faster the purifying speed of the air purifier, the higher the efficiency, and the larger the applicable area, such as 500m3/h. Purification of 500 m3 of particulate matter in 1 hour.
CCM represents the mass of particulate matter that is accumulated when the CADR filter needs to be replaced (when the CADR value is attenuated to 50%). The larger the value, the better the quality of the filter and the longer the life.
According to national regulations, the CCM of particulate matter is divided into P1-P4 from low to high, and the CCM of formaldehyde is divided into F1-F4 from low to high.
Buy P4 & F4 to get the most out of formaldehyde and harmful particles.
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Which is better for air purifiers? What kind of air purifier is good?
The times are developing, science and technology are improving, and people’s living conditions are getting better and better. However, the air quality is getting worse and worse. The long-term influx of unclean air will affect our health. Therefore, we choose to use best room air purifier cigarette smoke. The people are not in a minority, so what kind of air purifier should we buy? Today, Xiaobian will tell you which air purifier is better.
Different filter grades, the purification effect is very different. The higher the HEPA network grade, the smaller the diameter of the particles that can be filtered, and the better the filtration effect. At present, the common air purifiers on the market use H10H9 grade HEPA nets. The mid-to-high end air purifiers generally use H12 grade HEPA nets. Very few high-end air purifiers use H13 grade HEPA nets. The H13 grade HEPA net is a top-grade imported medical grade CleansingSoftHEPA filter with good filtration. Therefore, at least the air purifier with HEPA network level above H12 should be selected, and the air purifier with H13 level HEPA net should be selected as much as possible.
Which is better for the air purifier? The larger the amount of air cleaning, the larger the purification area.
The larger the air cleaning amount (CADR), the larger the purifying area of the air purifier, and the more the number of purification cycles. The international standard is 5 times an hour. For example: there is an air purifier with a clean air volume of 450m?/h, which is calculated by the room height of 3 meters. The area of the air purifier is: 450÷5÷3=30 square meters. When purchasing, consider whether the clean area of the air purifier matches the room area. If the clean area is smaller than the room area, the expected clean effect will not be achieved. Therefore, you should try to purchase an air purifier with a large amount of clean air. .
Which is better to buy an air purifier – choose a quiet air purifier
The noise problem is a problem that is often encountered during the use of the air purifier. When purchasing, the noise problem should be considered mainly from the following three aspects: whether the sleep mode can really achieve ultra-quiet; when the maximum air volume is generated Whether the noise can be tolerated; whether the noise in the automatic mode is acceptable. Some purifiers use DC brushless ultra-quiet motor and additional silent cotton technology to effectively reduce noise. At the time of purchase, air purifiers with both mute techniques can be prioritized.
Which is better for the air purifier? The higher the purification efficiency, the better the air purifier.
In addition to considering the one-time purification efficiency, consumers should also consider the purification efficiency of the whole machine, that is, the air purification amount, otherwise it will easily fall into the trap of the merchant: for example, purifying the same volume of air, one-time purification of two purifiers The efficiency is 99%, but the purifier A takes 1 hour, the purifier B takes 2 hours, obviously the purification efficiency of A is higher than B, but the merchant does not mark the test parameters, you see all It is a 99% purification rate. In addition, the efficiency of the air purifier in addition to PM2.5 and formaldehyde removal are different, and the value of both should be considered comprehensively at the time of purchase. Finally, it is necessary to consider that the values of purification efficiency are all tested in a manufacturer-specific experimental environment. Since the indoor air environment is different from the laboratory environment, consumers should not blindly listen to the manufacturer’s virtual standard value when purchasing, but See if the effect is really effective.
Nowadays, many people wear masks for fear of inhaling polluted air. If the air quality in the home is not up to standard, you may wish to purchase an air purifier to purify the air by using an air purifier. When considering various aspects, only the selection of high quality air purifiers can help us to improve air quality quickly.
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After the hot summer, the autumn and winter seasons followed. For this season, what do you know most about everyone? In addition to the wind and frost, it must be smog and extreme weather. Whether it is the South or the North, entering the autumn and winter season, the smog weather is always accompanied by us. To this end, I believe that many friends who are aware of air pollution have already prepared an best room air purifier for mold. Is the air purifier useful? Although the friends bought the air purifier, they still hesitated about the purification ability and effect of the best room air purifier for smoke.
Is the air purifier useful? It is well known that for haze weather, it is an indisputable fact that air purifiers can filter out or kill air pollutants and effectively improve the quality of air. Since I mentioned the air purifier, today I will tell you about this air purifier. See if the air purifier is used and used correctly.
Is the air purifier useful? How do we properly use the air purifier to not only ensure fresh air, but also extend the life of the air purifier. In the use of the air purifier, avoid the following misunderstandings, the air purifier can play a greater role; is the air purifier useful? Take a look at the 7 major mistakes that the department has chosen for you to share.
Myth 1: The bigger the appearance of the air purifier, the better. In the choice of air purifiers, some people think that the larger the appearance of the air purifier, the better the purification effect, which is not the case. The purification efficiency of the air purifier is not directly related to the size of the appearance. Because the air purifier that chooses too much space takes up space, the second one does not achieve the desired purification effect. Of course, everything can’t be generalized. An exception is the Air Purifier 882. The appearance of the 882 is large, the working area of the internal filter is also quite large, and the removal rate can fully achieve the purification effect of 99.9%. (Selected 882 air purifier is a professional air purifier product designed for formaldehyde, with the 4.0 technology composite HEPA peptidomimetic aldehyde removal technology as the core technology, the contact peptide has a strong decomposition ability) Myth 2: I have never bought an air purifier before I bought it. When the air purifier is used for a long time, it will absorb some substances such as dust and fluff in the air, so it should be cleaned at the air inlet, fan, etc.
Myth 3: A pair of filter cartridges took a long time For some users, buying a purifier may be once and for all, no longer paying attention to the operation of the air purifier, which is obviously wrong. Especially for the filter element, it is necessary to pay attention to it at all times, otherwise it will not only have no effect, but also damage the purifier. Generally, the user chooses to replace the filter element 6 months.
Myth 4: Regardless of the severity of the weather pollution, it is recommended to keep the air purifier in standby. In fact, many friends think that air purifiers are only used when the air pollution is serious or the indoor air pollution is serious. This is not right. To maintain good indoor air quality, it is recommended to keep the air purifier in standby for a long time. After all, the purification of the air purifier requires a process, and it is impossible to open it immediately.
Myth 5: Air purifiers are placed everywhere, not paying attention to safety It is also undesirable for most users to place or place the air purifier directly against the wall. Wall placement limits air circulation and reduces work efficiency; since the air purifier first absorbs harmful substances in the air and then filters through the filter element to discharge the filtered air, it is recommended that the purifier be placed in a certain position with the wall. the distance.
Myth 6: Unreasonable window ventilation I bought an air purifier, and we don’t recommend closing the doors and windows all day long. This is unscientific and not good for your health. The department chose to remind us that while using the air purifier, we also need to choose the appropriate time period to open the window for air exchange. The air purifier plays the role of purification without oxygen. Especially in the newly renovated house, the air is tight and the fresh air cannot be injected.
Myth 7: It is not necessary to turn off the air purifier when sleeping and resting. When the air purifier is running, it does generate noise. However, when using the purifier during a break or sleeping at night, you can turn on sleep mode (quiet mode) so that it does not affect the quality of sleep.
Is the air purifier useful? The pollution situation of the big environment cannot be controlled by ourselves. We need everyone to work together. However, when the fog is severe, we can use air purifiers to protect the respiratory health of our indoor small environment. Is the air purifier useful? The selection of the department, for the health of you and your family, to have a better purification efficiency of the air purifier, it is necessary to use and operate scientifically and reasonably.
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What is the effect of the air purifier in addition to aldehyde?
The air purifier was not originally aimed at formaldehyde, and the main purification target was PM2.5. Only now, the influence of formaldehyde is getting bigger and bigger, so now, as long as all the electrical appliances want to be with formaldehyde, what is the addition of formaldehyde air conditioner, formaldehyde dehumidifier…
Then let’s see if this formaldehyde removal air purifier is effective.
You can find out the description of the air purifier:
Principle of air purifier
The air purifier utilizes the principle of filtration and adsorption to remove the odor in the air and achieve the purpose of purifying the air. Its function is spectral. The main purifying objects include PM2.5, dust, animal hair, pollen, second-hand smoke, bacteria, etc. When formaldehyde does not have such a strong influence, there is no such model as formaldehyde removal. Even if there is a model other than formaldehyde, it is also activated by activated carbon to achieve the purpose of removing formaldehyde.
The results of the experimental report on the air purifier of the Shanghai Consumer Protection Committee have already concluded that the air purifiers involved in the test have an average rough calculation capacity of 30 square meters, and the purification efficiency per hour is between 8% and 97%. Larger, most of them are below 50%, which is completely incomparable with most of the PM2.5 purification levels above 90%.
Advantages of air purifiers
The reason why the air purifier is so popular is mainly that it is easy to use: plug-in and ready-to-use, long-term effective; early in the filter because of good filterability and adsorption performance, air purification is very obvious; can simultaneously eliminate various odors in the room.
But for formaldehyde, if the filter is installed inside, it is invalid. It can only be activated carbon, it will have an adsorption effect on formaldehyde, but it is the only adsorption. I want to know why everyone is apologetic in the activated carbon package, but I can’t put it down on the air purifier? Just because they are big?
The air purifier does change a disadvantage of activated carbon: it can only passively adsorb formaldehyde around the activated carbon, and there is no way for formaldehyde at a distance. However, other shortcomings are also unchanged: the adsorption capacity is weak, and it is easy to achieve adsorption saturation; after reaching the adsorption saturation, there is no effect on formaldehyde, and if the indoor temperature rises, it will cause formaldehyde desorption and cause secondary pollution. This hazard is even greater.
If it is only for formaldehyde, then I am not buying an electric fan directly to the activated carbon blowing is equivalent to empty? For the air purifier except for formaldehyde, it is necessary to change the activated carbon filter. The quality and volume of this activated carbon determine the effect of removing formaldehyde!
If you are really keen on air purifiers, then I will give you a few suggestions here:
1. If you want to choose a big name, at least the quality of the machine is guaranteed.
2. It is necessary to replace the filter element in time. After the adsorption is saturated, it is useless to formaldehyde.
4. Because of its limited purification area and economic capacity, buy a few more.
in conclusion
The main purifying object of the best home air purifier for smoke is PM2.5. Of course, there is also a certain effect of adsorbing formaldehyde, but the effect is extremely limited.
In March of this year, CCTV introduced the hazards of formaldehyde and the method of removing formaldehyde in a program of CCTV.
In the CCTV report, Zhang Yuping, director of the Building Environmental Testing Center of Tsinghua University, said: The effect of activated carbon on formaldehyde is very weak. We should use the chemical decomposition of oxidizing substances at this time, which is more effective. Purple plus black can oxidize and decompose the reducing gas formaldehyde into carbon dioxide and water, completely eliminating formaldehyde, not just adsorption. Purple plus black is made of alumina as a carrier, through special preparation techniques and complicated processes. The main features are high strength and fast effect. It is widely used in the purification treatment of toxic gas such as formaldehyde.
Director Zhang Yiping also said that the benzene series exceeded the standard and could be removed by physical adsorption. The black mineral crystal is composed of sepiolite and attapulgite (about 60%) and is made of diatom mud (about 30%) and a small amount of activated carbon (about 10%). The void density is very high and regular (more than normally activated carbon voids). The product has a large number of lattice pores less than 1 nm, and the pore surface has polarity, so it has strong active adsorption capacity for nano-scale polar gas compounds.
How to solve formaldehyde pollution in the end
Not renovated
If you have not yet renovated, it is best to directly engage in a two-way delivery system.
Try to install the fresh air system before the renovation. The system is basically around 20,000 yuan. The principle of fresh air is to discharge the indoor air and discharge the fresh air outside. This kind of formaldehyde removal effect is the best. If you have money, you can install one directly. It is best to choose a big brand. The fan has a long service life. The fresh air system can choose the central fresh air system, and do not choose the wall-mounted type. The wall-mounted type is subject to thickness and aesthetics, and the purification efficiency is too poor. Pay attention to the following points when selecting a fresh air system:
1, choose to have in and out
2, filter network try to choose the filter, do not recommend static electricity (easy to cause ozone exceeded)
3. Choose a fresh air system that is hot exchange
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