HC Water Purification Network is 315 pairs of manufacturers every year, "several joys and sorrows", the home appliance market is no exception, and the emerging product air purifiers in the past two years, in terms of product quality can not be reassuring.
Recently, the Beijing Municipal Bureau of Quality Supervision conducted quality supervision and inspection on 10 types of household appliances such as air purifiers, electric blankets, and indoor heaters in Beijing. The unqualified rate was 12.2%, of which air purifier products. The unqualified rate is as high as 28.6%, which is reflected in the consumer side, that is, the empty net product purchased by the user cannot be effectively purified or the use experience is extremely poor.
Announcement of the results of the spot check by the Beijing Municipal Bureau of Quality Supervision
According to the report, among the 14 batches of air purifiers sampled, the clean air volume, purification energy efficiency and noise items of the 4 batches of products did not meet the relevant standards or the product's express quality requirements, and the purification effect and the comfort of use were poor. First of all, we have to figure out a question: What impact will these indicators fail on our use?
â–¶Clean air volume (CADR): Decide whether purification is thorough
Clean Air Volume (CADR) refers to the amount of clean air that an air purifier can output per unit of time, typically in m3/h. It is the core of the purifying effect of the air purifier, and also determines the applicable area of ​​the product. The new national standard specifies the applicable area 0.0(0.07-0.12)×CADR value.
Indoor air is not static (picture from the network)
The most important point of air purification is high efficiency. The indoor air is not static, but it is exchanged with the dirty air outside every moment. The air purifier has to remove the indoor pollutants in the shortest time. And filtering, the most direct impact of the virtual standard CADR value is that the expected purification effect can not be achieved.
Interpretation of CADR values
For a simple example, if your home uses an area of ​​40 square meters, a little conversion can be used to determine an air purifier with a CADR value of 280-480m3/h. If the CADR value is less than this value, the purification effect will not be achieved. .
â–¶ Purify energy efficiency: decide whether the product saves electricity
Seeing the above explanation of the amount of clean air, many people may think, "I don't want to buy a machine with a high CADR value." The author does not recommend that you do this because there is also purification energy efficiency. The existence of two important indicators of noise.
New national standard for energy efficiency
The new national standard stipulates that purification energy efficiency = clean air volume / rated power, is divided into particulate matter purification energy efficiency and formaldehyde purification energy efficiency. When the particle energy purification efficiency value reaches 2, it is qualified. When the ratio reaches 5, it is high-efficiency. For formaldehyde purification energy efficiency, when the ratio reaches 0.5, it is qualified. When the ratio reaches 1, it is high-efficiency. The energy efficiency rating is not up to standard, and the most direct consequence is the cost of electricity.
On the other hand, the filter screen of the air purifier is a consumable item. If it is operated for a long time with a large amount of air in daily use, the service life of the air purifier will be significantly shortened, and the replacement of the filter screen is expensive.
â–¶Noise: Decide on user experience
Everyone knows that high-intensity noise can have a serious impact on our lives, but it is impossible to achieve complete silence in life. What kind of noise level is “comfortable†for the human body?
The above noise level value table tells us that the indoor static noise is about 30-50dB, and the noise of the vacuum cleaner is 70dB. It is not only emotionally annoying when it is used for such a long time, but also irreversible to our hearing. damage.
New national standard for noise regulations
In the new national standard, noise and product clean air volume are also linked. When CADR≤150m3/h, the machine noise should be ≤55 decibels; when 150
At 450m3/h, the machine noise should be ≤70 decibels. Noise is not up to standard and can cause serious damage to our hearing.
Knowing the meaning of these indicators, the next question is to solve another problem: How can I buy a qualified air purifier? For this question, China Consumers Association gave us four suggestions:
â–¶New national standard is the minimum threshold
The new net national standard officially implemented in 2016 has clearly defined four indicators of air purifiers: CADR (clean air volume), purification energy efficiency, noise and CCM (cumulative purification). In the past two years, with the development of the market, many brands' products have exceeded the new national standard in terms of data, but the new national standard is still an "entry-level" standard for measuring whether a product is qualified.
â–¶ formal channels + regular brand = rest assured
At present, most of the channels we purchase air purifiers are e-commerce platforms or large-scale stores, but there are also some brands that swindle consumers, such as “promotion†in the community, the price of their products is very low, but does not meet the new national standard. There are no inspection reports provided by professional testing agencies. To avoid such products, we still have to choose formal channels and formal brands.
â–¶ See professional agency test report
From the initial single "except PM2.5" to the present "except formaldehyde, allergens", etc., the public's further attention to respiratory health has made the function of air purifiers more and more abundant, but whether these functions are effective, manufacturers say It does not count, but depends on the test report provided by the professional testing organization.
For example, the problem of formaldehyde in interior decoration that has plagued many users recently, there are many products on the market that claim to have “formaldehyde removal rate exceeding 90%â€, but there is no professional test report, and there is no mention of test conditions, vague slogans. It is easy for small white users to enter the pit.
â–¶Select according to purification needs
As mentioned above, the CADR value determines the applicable area of ​​the product. At the same time, we should choose the right product according to the area of ​​the home when purchasing the product, which can achieve the best purification effect, and will not cause waste of energy and user experience. Impact.
At present, most consumers in China have two needs for indoor air purification: in addition to PM2.5 and formaldehyde removal. Next, we will screen you two air purifiers worth buying according to the above criteria.
In addition to PM2.5: Philips Air Purifier AC8612
As an indispensable part of the domestic purification market, Philips Air Purifier has won the favor of many high-end users with its excellent purification effect and product design.
The measured high-end particulate matter and formaldehyde CADR values ​​of this product are 923.9 and 352.1 cubic meters per hour, respectively, and the CADR values ​​of sleep stalls are 168.8 and 119 cubic meters per hour, respectively, while the sleep gear noise is only 34.5 dB. It also achieves high efficiency; powerful performance and comprehensive care for the user experience.
In the horizontal evaluation of 14 mainstream air purifiers in 2017, the overall performance of this product is quite good. Whether it is the purification performance test data, noise, product design and other subjective test results related to the user experience, are quite satisfactory. As a high-end air purifier, Philips AC8612 strength can not be underestimated.
The bottom roller design, the precision air quality detector, and the double-sided air intake at the top... These outstanding designs present a complete air purification solution for the whole house. The Philips air purifier AC8612 is a top air purification product from Philips and is worth starting.
Purchase link: https://item.jd.com/2197932.html
2. In addition to formaldehyde: 352X83 air purifier
Today, the "carbon cloth" design is popular, the 352 air purifier X83 is one of the few air purifiers that insist on the use of multiple filter tower structures. The advantage of this design is that it allows manufacturers to "stack" to achieve Better purification effect. First, let's take a picture to see the measured data of the 352X83 air purifier.
In the formaldehyde desorption test, the formaldehyde concentration in the experimental chamber of 352X83 is reduced by 25% through 16 hours of purification, thanks to its
We all know that the tower structure can bring more air volume and better purification effect to the purifier, but it also brings high noise and other problems. How to achieve a trade-off between extreme performance and a better user experience?
The noise of the 352 air purifier X83 at maximum/minimum wind speed is 64.8/33.7dB, and the internally optimized air duct is the key to its low noise; the performance of the ultimate press product through better air duct design and better filter screen While maximizing the user experience.
Purchase link: https://item.jd.com/3992991.html
Of course, the above two products are only recommended by the author based on objective data. Specifically, which product to purchase, you need to identify the factors such as the environment of use, the type of main pollutants, and the area of ​​use. As long as we keep in mind the elements mentioned in the article, choose a regular brand to purchase from the formal channels according to their own needs, and choose a qualified and suitable air purifier, it is quite simple.
Editor in charge: Gao Xinyi
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