6 unpopular knowledge points of air purifiers

Regarding the choice of air purifier, I believe everyone is most concerned about the price and function. However, these 6 points may be less concerned or not noticed before. Then, which 6 points are specific? ? The following editor will give you a summary.

1. Clean air volume (CADR)

There may not be many people who know the term air cleansing capacity. Generally speaking, the larger the air purifier, the larger the purifying area and the more purification cycles. Refer to the industry standard for 5 cycles per hour. The calculation of the air clean volume can be as follows. If the clean air volume of an air purifier is 450 cubic meters per hour, and the height of the room is 3 meters, then the applicable area of the air purifier is 450 divided by 5 divided by 3 and finally obtained Conclusion of 30 square meters. So when you buy an air purifier, you should consider whether the clean area of the air purifier can match the area of the room. If the clean area is smaller than the area of the room, the expected cleaning effect may not be achieved.

2. Air purification efficiency

The term purification efficiency is also relatively specialized, and there are not many people who know it. Generally, the one-time purification efficiency is: the number of particles at the air inlet minus the number of particles at the air outlet and then divided by the number of particles at the air inlet. From the one-time purification effect, the quality and purification effect of the air purifier can be more intuitively seen. In addition, when purchasing an air purifier, you should consider the purification efficiency of the whole machine in addition to the one-time purification efficiency, which is the amount of air cleanness mentioned above. For example, to purify the same volume of air, the one-time purification efficiency of the two purifiers is 99%, but the A air purifier took 1 hour, and the B air purifier took 2 hours, then Obviously, the purification efficiency of A air purifier is higher than that of B.

3. Real-time display of the content of fine particles

At present, some air purifiers on the market cannot display the content of fine particulate matter (PM2.5) in the air, or some use “excellent, medium, and poor” to display roughly, and only a few air purifiers can display the air in real time The precise value of the medium and fine particles, so that consumers can intuitively see the changes in indoor air quality.

4. Way of entering and exiting the wind

At present, there are two main types of air inlet and outlet methods for air purifiers on the market. One is the rear air inlet and the front air outlet: this method is easy to blow up the dust on the floor and aggravate the dust in the indoor air; the other is Air enters from below or from behind, and air from above: This method can suck the dust on the floor into the air purifier to purify and blow out fresh air from above, which plays a role in cleaning the floor, especially if there are children at home. Children like to crawl on the ground, so they need to pay more attention to floor hygiene.

5. Noise

As long as it is an electrical appliance, it will encounter noise problems more or less, and of course air purifiers are no exception. Then the voice of the air purifier mainly considers three aspects: sleep, maximum air volume and automatic mode, because only these three modes are no problem, then the noise of this air purifier is no problem for you. In addition, some air purifiers use DC brushless ultra-quiet motors and additional quiet cotton technology, which can effectively reduce noise. Therefore, priority can be given to air purifiers that have adopted these two silent technologies.

6. Power consumption

Generally speaking, under the same purification effect, the lower the power of the air purifier, the lower the power consumption. In addition to power, some air purifiers are equipped with an automatic mode, which can automatically adjust the air volume according to the indoor situation, so as to save power and extend the service life of the filter. Therefore, when choosing an air purifier, try to choose an air purifier with an automatic mode.