Reader's question>>>
“The family wants to buy an air purifier, but the products on the market are dazzling. Can you ask the reporter to help us ask the experts?†Ms. Wu called the phone and said that as soon as the winter smog increased, she would like to add to the home. An air purifier, but now there are many air purifier products, and the price is also very large, I hope to get more professional advice.
Reporter's interview>>>
The reporter learned that there are many purifier brands on the market, and the quality is not good. Some manufacturers even mislead consumers through false propaganda and concept marketing.
The same price to choose CADR big
The quality inspectors gave an option to purchase: the key performance indicator of the purifier is clean air (CADR), and CADR is the air purifier's ability to provide clean air. When the price of the purifier is basically the same, CADR and purification efficiency The larger the value, the better the instrument performance.
Purified "endurance" to see CCM
Air purifiers are different from other electrical appliances and need to be examined together for their "capability" and "lifetime". Only the purification ability and the lack of purification endurance products are not good products. The new national standard of "Air Purifier" officially implemented in March 2016 clarified that the core parameters of the air purifier are clean air volume (CADR) and cumulative purification (CCM), that is, the "purification ability" of air purifier products. And "sustainability of purification capabilities."
The size of the clean air volume CADR value indicates how fast a purifier purifies the target pollutant. The larger the CADR, the lower the room pollutant concentration level in a shorter time; and the corresponding cumulative purification amount (CCM). It indicates the pros and cons of the purifying ability. The larger the CCM, the longer the effective CADR maintenance time and the more durable.
Buy purifiers don't have to be greedy
The quality supervision department of Jiangsu Province has conducted comparison experiments on 20 brands of air purifiers. From the comparison of experimental results, the performance and price of air purifiers are not necessarily related to the removal of particulate matter. Therefore, consumers do not have to be greedy when purchasing an air purifier, but choose the appropriate model according to their actual needs.
Taking the civil building layer height of 2.4 to 2.6 meters as an example, the area is assumed to be 16 square meters. Under normal circumstances, the applicable area of ​​the instrument can be estimated by CADR. The formula is: applicable area = CADR × k, k value (0.08 ~ 0.12), Too low, no purification effect; too high, will pay more investment and consume more energy.
Timely change of filter material to prevent secondary pollution
Need to be especially reminded that the applicable air purifier must pay attention to the timely replacement of the filter material to avoid secondary pollution. According to survey data, the air purifier filter replacement has become a “blind spot†for consumers, and 34.9% of users do not know that the air purifier filter needs to be replaced regularly. Experts in the industry pointed out that as the core component of the air purifier, the filter screen has a life span and must be replaced in time. Otherwise, once the "extraordinary service" air purifier filter is saturated, the ability to filter pollutants such as PM2.5 will be greatly attenuated, and secondary pollution may also be caused.
In addition, the function of the air purifier is to purify the indoor air. It does not have the function of oxygen production. Long-term use in a relatively confined space will result in low oxygen content in the environment and affect human health. If you are using the air purifier for a long time, pay attention to ventilation at the appropriate time.
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