Air Purifier Selection Guide 1. Purification Technology: Purification technology is the primary factor that should be considered when purchasing an air purifier. The current purification technologies include the following four types, physical filtration, represented by activated carbon and HEPA mesh filtration technology. At present, the safest and most efficient filtration method; chemical decomposition filtration, represented by photocatalyst and cold catalyst technology, can decompose harmful gases while purifying; ion technology, represented by negative ion and silver ion technology, can be disinfected and effectively purify air. Electrostatic dust collection, mainly by means of electronic dust collection, will produce ozone and bring secondary pollution. The air purifier should be selected to apply the three types of technology: physical filtration, chemical decomposition filtration, and ion technology. Physical filtration technology is the first choice. To ensure the purification effect, choose an air purifier with multiple purification technologies; avoid using static electricity. Air purifier for dust collection technology.
Air Purifier Selection Guide 2, filter grade: different filter grades, the purification effect is 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-level HEPA nets. The high-end air purifiers generally use H12-level HEPA nets. Very few high-end air purifiers use H13-level HEPA nets. The H13 grade HEPA mesh is the top imported medical grade Cleansing Soft HEPA filter with the best filtration results. Therefore, at least the air purifier with HEPA network level above H12 should be selected, and the air purifier equipped with H13 grade HEPA net should be selected as much as possible.
Air Purifier Selection Guide 3, air cleaning amount: the larger the air cleaning amount (CADR), the larger the purifying area of the air purifier, and the more the cleaning cycle. The international standard is 5 times an hour. For example, there is an air purifier with a clean air volume of 450m3/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 air cleansing.
Air purifier purchase guide 4, purification efficiency: product one-time purification efficiency = (number of air inlet particles - number of air outlet particles) / number of air inlet particles, one-time purification effect can visually see the quality of the product and purification effect . 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.
Air purifier purchase guide 5, PM2.5 value real-time display: some air purifiers on the market can not display the content of PM2.5 in the air, and some can be roughly displayed with "excellent, good, medium, poor" There are very few high-end air purifiers that can display the exact value of PM2.5 in the air in real time, and users can easily see the changes in indoor air quality.
Air purifier purchase guide 6, the body structure: At present, there are two ways to enter and exit the air purifier, one is the wind in front of the front air inlet, this way is easy to blow the dust on the floor to increase the dust in the indoor air; The other is the wind above or below the wind inlet: this way, the dust on the floor can be sucked into the air purifier to purify and then blow out the fresh air from above, which plays the role of “cleaning the floor”, especially if there is a baby at home. The baby likes to climb on the ground and needs to pay attention to the floor hygiene.
Air purifier purchase guide 7, safety performance: the use of electrostatic precipitator and pure negative ion technology air purifier will produce ozone, which is often said to be secondary pollution problems of air purifiers. Certain ozone can kill bacteria, viruses, and decompose gaseous pollutants, but excessive ozone is harmful to the body, affecting the lungs, causing asthma, and causing serious cancer. At present, the safest and most efficient technology is HEPA network technology and activated carbon technology. Electrostatic dust removal and pure ion technology will produce ozone. When purchasing, you should choose air purifier with HEPA mesh filtration and activated carbon technology.
Air Purifier Selection Guide 8. Noise Problem: 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 is true or not. Can achieve ultra-quiet; whether the noise generated by the maximum air volume 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 that take both of these mute techniques can be prioritized.
Air purifier purchase guide 9, power consumption problem: under the same purification effect, the smaller the power of the air purifier, the less power consumption. In addition to power, some air purifiers are equipped with an automatic mode, which can automatically adjust the air volume according to the indoor conditions, so as to achieve the purpose of power saving, and also extend the life of the filter. When purchasing, you should try to choose an air purifier with automatic mode. Device.
