After more than a month of preparation, the PConline laboratory joined forces with the Guangdong Provincial Association of Indoor Environmental Hygiene Industries and the Chinese Academy of Sciences Guangzhou Branch to conduct quality surveys on Jingdong Mall's hot air purifiers. Do not miss out on the empty partners!
Mijia has always been synonymous with the cost-effectiveness of smart home appliances. The millet air purifier has gained a lot of attention and favor from consumers because of its low price and minimalist design.
At present, there are a total of four models of millet air purifiers for sale, namely 2, 2S, Pro and Max, with increasing prices. In this case, we want to test the millet air purifier 2 which is priced at only 699 yuan. How effective is the actual quality of air purifiers in Taiwan?
product description
Millet air purifier 2 product parameters
As can be seen from the parameters and placards, Xiaomi Air Purifier 2 is mainly compact, small area of air particulate filter, and then it is a very low stand-alone price.
Millet air purifier 2 uses front, left and right sides to enter the wind, upper air outlet structure. The fuselage does not have a display, only the top button and the front of the mode indicator, the user can control the machine through the App and monitor the air quality.
Millet air purifier 2 24 x 24cm does not occupy the bottom area, 52cm height is also very small, is the current air purifier inside the volume one of the smallest products. Millet air purifier 2 for 21 to 37 square meters of space, consider To the average user will not always open the most upscale, so millet air purifier 2 is more suitable for use in the bedroom and small living room.
Simple dismantling
The internal structure of millet air and purifier 2 is very simple. The cylindrical filter is installed at the bottom. The filter is the core component of the fan.
The HEPA filter design of millet air purifier 2 is rather special. It adopts a cylindrical barrel structure. The outer layer is a HEPA filter that filters particles, and the inner layer is an activated carbon filter.
The product we generally understand here, the following details of the millet air purifier 2 detection results.
Measured performance secret
In order to restore the real performance of millet air purifier 2, we sent the machine to the Guangzhou Branch of the Chinese Academy of Sciences for testing. We measured four key data: particulate CADR, formaldehyde CADR, maximum noise, and power consumption. The test results are shown in the figure below. :
Test report results Excerpt Test report results
From the measured results, the CADR of millet air purifier 2 is far from the brand name of the factory, which is only 60% of the latter, and it is suspected that the imaginary mark is not present. The CADR of particulate matter, noise and power consumption are not problematic.
In order to evaluate this air purifier in more depth, we will refer to the filter air purifier particulate/formaldehyde purification performance grading standard (hereinafter referred to as the star rating) issued by the China Quality Inspection Association and the Guangdong Provincial Association of Indoor Environmental Health Industry. Air Purifier 2 scores.
Grading
According to the star rating standard, the products are divided into 4 groups according to the CADR of particulate matter in the air purifier/formaldehyde CADR. The detailed scores for different CADR groups are as follows:
Taking millet air purifier 2 as an example, the CADR of the particulate matter measured is 325.4m3/h, which belongs to 300.< 颗粒物CADR≤450组, 噪音, 颗粒物CCM和颗粒物净化能效分别得1星, 2星, 3星, 合计6星 (最高9星) . 类推甲醛净化性能评定, 小米空气净化器2得分为4星 (最高9星) .
Then, we will score points for the particulate matter CADR, formaldehyde CADR, and noise that are measured by the air purifier and compare it to the star rating standard. The Xiaomi Air Purifier 2 scores as follows:
Millet air purifier 2 does not perform well in terms of noise, filter contaminant capacity, and formaldehyde CADR. The highest level of noise at 65.1 dB (A) is too high, indicating that the internal noise reduction capability is normal, and the operating efficiency of the fan is not High. And the lower formaldehyde formaldehyde purification efficiency of CADR and formaldehyde shows that the formaldehyde filtration capacity of millet air purifier 2 is very poor. The problem of formaldehyde CADR's suspicion of false labeling also needs our attention.
Therefore, the comprehensive particle purification ability and formaldehyde purification capacity star rating, we gave the millet air purifier 2 score of 40.4 points.
to sum up
Although millet air purifier 2 seems to have a relatively high price/performance ratio, the price of 699 yuan is only a function of particulate matter filtering capacity. Energy efficiency, noise and other indicators closely related to the actual experience, millet air purifier 2 did not perform well. Even the formaldehyde CADR is suspected of being false, and finally the Truth Lab gave only 40.4 points. It is not too recommended for everyone to buy.
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