At 7:30 pm on November 7th, Lao Luo held a press conference for Hammer Technology. It was also the launch conference of the comic dialogue, which brought more than just mobile phones. In addition to the release of the Nut Pro 2 smartphone, it also features an air purifier: a breathable smart air purifier. About the new nut Pro major technology media has already said enough, we are interested in the real laboratory is the air purifier introduced later, the old Luo advertised its CADR value can reach 800+, we will talk to you What are some of the net performance parameters?
The air purifier was originally left unattended in China, and things that cost thousands of dollars seem to have nothing to do with our lives. But since everyone knows that they are in the middle of the shack, not in the fog. After the bad air quality can harm the body, this thing will start to sell well. In addition to the old white goods manufacturers have joined the battlefield, emerging companies are not happy. The millet air purifier sold very well, and now the hammer is not only a mobile phone, but also an air purifier.
Consumers are very concerned about such products, but there are many things that they don't understand, especially some parameters that measure performance, and can't be seen at the same time as other home appliances. The water in it is also very deep. After all, the performance is not easy to observe, and it is not easy to distinguish by your own nose. At the hammer conference, several parameter words about empty net were found, one is CADR and the other is CCM. And when Luo introduced the new product, the CADR value reached 800+, and the purifying area was 56~96 square meters. This parameter is really scary enough. What do these parameters represent? The truth-seeking laboratory and everyone a.
What is CADR?
Lao Luo has always stressed that the CADR value can reach up to 800+. What exactly is CADR? According to the explanation of the new national standard GB/T 18801-2015 of air purifier, CADR is the amount of clean air, which is filtered by the purifier after unit time. The total amount of clean air, in m3/h, contains particulate matter CADR and formaldehyde CADR. For example, if the CADR of the particulate matter is 500m3/h, it means that the particulate matter is purified by using an air purifier for 1 hour, and 500 cubic meters of particulate matter can be purified. It is mainly used to measure the purification efficiency of an air purifier.
The higher the CADR value, the higher the purification efficiency of the air purifier. The CADR value of the particulate air purifier reaches 800+, which means that more air can be purified in the same time, and it can be purified in a fixed space in a shorter time. There are many kinds of particulate matter, and there is a word that everyone has a high degree of recognition, which is PM2.5. For household air purifiers, the efficiency of PM2.5 purification is another concept. Simply speaking, the CADR value of the particulate matter actually contains the purification efficiency of large particles, PM10, PM2.5 and smaller particles.
PM2.5 CADR
In fact, CADR is a value used to measure the efficiency of product purification. It is targeted. For example, formaldehyde CADR is a CADR value measured specifically for formaldehyde purification efficiency. The toluene CADR value is for the purification efficiency of toluene. The particulate matter filled in the environment will have different motion laws due to its particle diameter, and its content in the air will be different, and the damage to the human body will be different.
PM2.5, probably the most frightening type of people, is fine particles with a particle diameter of less than 2.5 microns. It can pass directly into the lungs through the filtration mechanism of the respiratory tract, and it is difficult to discharge in the lungs, eventually leading to cancer. It is an important measure of air quality and has an important impact on human health. Whether the air purifier can filter the PM 2.5 in the room is the most concerned point for consumers. However, if only the CADR value of the particulate matter is marked, it is impossible to judge the filtering ability of the empty net except PM2.5.
For air purifiers, only the fiber filter is required to remove PM10 grade particles, while the smaller size PM2.5 requires a higher density filter such as HEPA filter. The purification comparison demonstrated at the hammer release was more of a larger particle because the PM2.5 grade particles were not visible to the naked eye. So whether the CADR value of the particulate matter reaches 800+ means that purifying PM2.5 is also efficient. Subsequent testing of the CADR value of PM2.5 is required to be known.
CCM value
The CCM value is a parameter to measure the cumulative purification amount. The length of time that the purifier can be used is a parameter and indicator that consumers are very concerned about. The length of use can be measured by the amount of pollutants that the purifier filter can absorb. Characterized by the amount (CCM) in milligrams, mg. It is a parameter used to measure the maximum adsorption capacity of an empty net filter. The same CCM value is also divided into different types of pollutants, such as PM2.5 CCM value, formaldehyde CCM value, particulate matter CCM value and so on.
National standard
HEPA filter rating
PM2.5 CADR values ​​do not pass through professional laboratories, and it is indeed difficult to quantify the empty PM2.5 filtration capacity. However, the empty net filtration of PM2.5, pollen, allergens, bacteria, viruses, second-hand smoke and other particles is achieved through a filter material called HEPA filter, and according to different standard grades, HEPA filter filtration The effect will vary.
It can be seen from the Chinese standard and the European standard that the HEPA filter above the high-efficiency filter A (national standard) or H12 (European standard) grade has a filtration efficiency of 99.9% or more for particles of 0.3 μm or more. This level of HEPA filter is adopted. The products of the net are guaranteed in terms of filtering effect. Of course, the high-grade HEPA filter can't explain everything, it only makes sense if the CADR value of the particles is high.
What is the quality of an air purifier?
CADR value, CCM value, energy efficiency, noise
The CADR value is the core evaluation parameter for the performance of the air purifier. But when we buy empty net, we can't just refer to its CAD and formaldehyde CADR values. Considering the principle that the air is cleaned by the fan and the filter traps the particles, the higher the CADR value, the more frequent the noise, and the more power. We still take the example of a smooth breathing intelligent air purifier. When the CADR reaches 800 or above, the working sound has reached 66.3dB, and the sound is noisy. So at the press conference, Lao Luo also emphasized the CADR performance of this new product in a quieter working state.
Therefore, in actual use, the highest position is only suitable for a short time after we go home, and most of the time will run in the low mode, the noise is relatively low, then the CADR value is more important. When purchasing an empty net, we need to consider comprehensively. In addition to paying attention to its maximum CADR value, we should also check the working noise and purification ability of different gears on the product page.
Some basic knowledge about air purifiers is here. Next, we will also conduct cross-evaluation on some products on the market. I hope that everyone will pay more attention to our follow-up content.
Crystal head is an important interface equipment in network connection. It is a kind of plastic joint which can be inserted along the fixed direction and can automatically prevent falling off. It is used for network communication. It is named "crystal head" because of its crystal like appearance. It is mainly used to connect network card port, hub, switch, telephone, etc. The two ends of each twisted pair are connected with network card and hub (or switch) by installing crystal head.
Modular Plug
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