Right now at the beginning of winter, fog and haze weather, 'pm2.5' again boarded the major news headlines, all kinds of ridicule of the paragraph began to refresh, as always, in our circle of friends.
But to say that the haze, no harm. For the air purifier industry, the haze is its 'catalyst.' So perhaps understand the extreme, but it really exists in this industry, just as many companies are looking forward to 'Empty net new product released the day, you can smog cover the sun, come to him overnight. It can be said that the haze continues to rampant in recent years the rapid development of the domestic air purifier market, the main thrust of development.
Industry data show that since 2011, air purifier sales increased year by year, an increase of 465.2% within six years, a compound annual growth rate of 42.84% by the end of 2017, the air purifier market sales or more than 100 billion yuan. A few years, it is exactly the haze began to enter the cognitive years of our lives.
At present, haze remains the same, fiery air purifier industry is still in dispute, is more and more companies fancy, resulting in a mixed bag of this market, competition continues to increase at the same time, consumers are also faced with many, an endless stream of publicity How to choose, which is true?
Fan + filter = air purifier really not true?
In the air purifier began to rise in the Chinese market during that time, the industry has a voice 'air purifier = fan + filter', and even spread many online DIY air purifier teaching video. So, for air purifier Is this a simple combination of fan and filter that really or not?
In fact, the fan and the filter is indeed the two core components of the air purifier, but if the air purifier only so, but not true.Air purifier air duct design and operation of the noise there is a direct relationship, while running The stability of the air to promote mobility and the use of safety, the air purifier itself, there are many technical content included.
Lu Jianguo, director of Institute of Testing Technology, China Household Electrical Appliances Research Institute, once dismissed this statement: fans and filters can not form a circulating air flow, and can not achieve sustained and effective purification effect, and there is a big security risk And an excellent air purifier, is the perfect combination of industrial design and innovative technology of ingenuity, but also to achieve the new national standard of the national standard.
The bigger CADR the better?
Speaking of the new national standard, we have to mention GB / T18801-2015 "air purifier" GB of the core parameters-CADR (clean air volume) .This value is concerned about the air purifier industry, people will never be strange , More and more enterprises in the new product release, will declare how much the CADR value of their products, not even the largest only larger.
The publicity on the guide, so many consumers think that the greater the CADR value of the air purifier on behalf of the better, this statement really or not true?
In fact, the CADR value is indeed one of the core evaluation parameters of the performance of the air purifier, but precisely because of one of them, when we buy the air purifier products, in addition to considering the value of CADR (clean air) Consider CCM values (cumulative purge volume), noise, energy efficiency ratings, operational experience, etc. In general, higher CADR values tend to be associated with greater noise and higher energy consumption if Blind pursuit of large clean air, and can not bring a perfect experience, so the purchase should pay more attention to the applicability of air purifiers for personal needs, through the multi-dimensional considerations to choose the right product.
Formaldehyde removal 99% really not true?
In the market of all kinds of air purifier product promotion, we will often see the '99% of a pollutant removal' message, which contains not only the main pollutant smog haze pm2.5, but also common indoor air pollutants Formaldehyde and other harmful gases. So this argument, really or not?
Here we will filter from the principle of purification of air purifiers to analyze, such air purifier products are mostly through the air suction into the fan, after the primary filter to filter out larger dust, pollen and other larger pollutants, and then through HEPA filters PM2.5 filter out such subtle pollutants, and finally by the activated carbon filter adsorption of formaldehyde and other harmful gases and odor, thus completing the air purification.
For particulate contaminants such as PM2.5, the decontamination mainly depends on the HEPA filter, which is the high efficiency air particulate filter, in which HEPA filters also have their own 'decontamination level', including H12, H13, etc. However, EU standard, H13 level above the filter can filter tiny particles to PM0.3, the filtration efficiency can reach 99.95% .If it is equipped with high-grade HEPA filter air purifier products, 'PM2.5 removal of 99% 'This statement is still reliable.
For formaldehyde, however, the 99% removal rate is not true, primarily because formaldehyde has a gradual release to the environment and the longest release period for formaldehyde-containing furniture can be as long as 8-14 years , Which makes it can not be completely cleaned up in a short time by opening the air purifier.Secondly, most of the air purifier products for formaldehyde purification methods, can not be said to be removed but only adsorption, activated carbon on the air Formaldehyde only adsorption, the greater the capacity of its adsorption, the effect of natural better, but far from '99% removal.
Filter replacement reminder and indoor air monitoring really not true?
With the rapid development of air purifiers, there have also been many 'upgraded' functions in the industry, such as high-tech such as filter replacement reminders and indoor air quality monitoring, are these functions really or not really?
As an example, when millet just launched the air purifier products, it was deeply trapped in the plastic mesh door incident. The general situation is that without dismantling the filter plastic film case, the millet air purifier began to calculate the filter Network life, and its air quality test light from red to green.
In response, millet officials also responded that the purifier filter generally consists of coarse filter layer (filter particles larger), HEPA filter layer (PM2.5 and other small particles) and activated carbon layer (adsorption of formaldehyde and other harmful gases) Composition, real-time monitoring costs are good, so most of them are calculated using an algorithm and also revealed that, not only millet air purifier, many other brands have also used this method to calculate the filter life.
For unopened filter plastic film, the indicator light from red to green, millet official responded that the sensor to check the ambient air quality due to particulate matter settlement and local air flow changes.
In fact, the common air-purifier detection probes on the market detect the air quality of an entire room by emitting a light beam, detecting the amount of light received at the receiving end, receiving part of the evidence of particle obstruction, and then calculating the air quality of the entire room When disassembling the filter plastic film, the value of air quality monitoring will change as soon as the amount of beam at the receiving end changes.
From this it can be seen that most of the air purifiers on the market today, the replacement of the screen to remind and indoor air quality monitoring function, can not really reflect your home air purifier filter used in the actual life conditions and the real indoor air quality , The value presented is only a 'reference interval' given by the algorithm, but can not be considered as true.
In general, even the development of nearly 100 billion market size, the air purifier selling the Chinese market has been three or four years, but now the air purifier industry are left on the market are 'real' ? For consumers, the purchase of air purifier products, more or question mark, empty net industry's development is still a long way to go.