Air purifier working principle air purifier brand

As air pollution becomes more and more serious, in order to breathe better air, we use an air purifier to purify the air. Air purifiers are now very common. But for the working principle of air purifiers, many people are not very familiar with it. Now let's understand how the air purifier works.

How air purifiers work

1: Passive purification class (filter purification class)

The main principle of the passive air purifier is to use a fan to pump air into the machine and filter the air through the built-in filter, which can mainly filter dust, odor, toxic gas and kill some bacteria. The filter is divided into: dust collection filter, formaldehyde removal filter, deodorization filter, HEPA filter, etc. Among them, the higher cost is the HEPA filter, which has a very obvious effect of filtering particulate matter, and can decompose toxic gases and sterilizing effects, and can suppress secondary air pollution.

The quality of the fan and filter of this type of product determines the effect of air purification. The location of the machine and the layout of the room also affect the purification effect.

2: Active purification class (no filter type)

The fundamental difference between the principle of active air purifier and the principle of passive air purging is that the active air purifier is free from the limitations of the fan and the filter screen, and is not passively waiting for the indoor air to be pumped into the purifier for filtration and purification. It is an effective and active release of the purification and sterilization factor into the air. Through the characteristics that the air will diffuse, it will reach the corners of the room and clean the air without dead angle.

At present, the technologies for purifying sterilization factors on the market mainly include silver ion technology, negative ion technology, low temperature plasma technology, photocatalytic technology and plasma ion group ion technology.

3: Double purification class (active purification + passive purification)

This purifier is actually a combination of passive purification technology and active purification technology.

4. Comparison of active and passive purifier principles

Compare the efficiency of air purification. Passive adsorption purifier adopts fan + filter mode for air purification. The principle of using air flow alone will inevitably have dead angles. Therefore, passive air purifiers can only place a small space in the air purifier to produce certain Purification effect, only after a long time is passed before the indoor air can be completely filtered.

The active air purifier utilizes the diffuse nature of the air to spread the purification factor to all corners for air purification, so that the air can be purified in a place where it can be diffused. Comparing with the negative ion air purifier, it is found that after the negative ions are released from the air, the negative ions can actively attack, find the pollutants in the air, and agglomerate into a group to actively settle them. From this point of view, active air purification has obvious advantages.