The fresh air system is becoming more and more popular in the family, many people are looking forward to the installation of the fresh air system, and it feels good to use it at first, but when it is used for a long time, there will be problems such as secondary pollution, the purification effect can not be reflected, and the air volume becomes smallerMaybe all you need is a simple step – replace the filter.
The basic function of the fresh air system is ventilation, but for some seriously polluted areas, if outdoor pollutants enter the room with the fresh air, it will also aggravate the indoor air pollution problem. In this case, simple ventilation can not bring a good improvement to the indoor air, so the core function of the fresh air system is still to purify and filter.
If you want to have clean air, the role of the filter is very important, most of the fresh air systems on the market have a built-in three-layer filter, the first layer of primary filter, which can effectively intercept dust, dander, hair and other large particles, while protecting other filters;The second layer of activated carbon filter adsorbs gaseous pollutants such as formaldehyde and dilutes harmful substances such as odor and second-hand smokeThe third layer of HEPA filter, trap 0More than 5um particles, dust and various suspended solids.
During the use of these filters, a large number of pollutants will remain on the surface of the interception, and what will happen if the filter is not replaced for a long time?
1. Breeding bacteria and causing secondary pollution.
If the filter is not replaced for a long time, dust will accumulate on the surface of the filter when outdoor air enters and cannot be discharged. When the outdoor fresh air passes through the filter, the entrained water molecules will be intercepted by the filter, making the filter screen damp, and the dust attached to its surface will form a large area of mud, which is easy to breed a large number of bacteria in the mud. These bacteria will enter the room with the fresh air, causing secondary pollution to the indoor air.
2. The purification effect cannot be reflected.
The purification efficiency of the filter screen is very related to the cycle of use, when the filter screen is not replaced regularly, its surface will be covered with pollutants such as dust, beyond the scope of the filter screen to accommodate pollutants, the purification effect of the filter screen can not be reflected, it is difficult to effectively intercept the pollutants, the outdoor fresh air can not be completely purified, and the pollutants enter the room relatively simply.
3. The air output volume becomes smaller.
When the dust holding capacity of the filter exceeds the standard value, the resistance value will become larger, and the air cannot enter the room smoothly, resulting in a smaller air volume at the air outlet.
4. Shorten the service life of fresh air equipment.
When the dust holding capacity of the filter exceeds a certain amount, after the filter is saturated, the pass rate of fresh air will be reduced, and when the fan is still running at high speed, the service life of the fresh air system will be reduced.
Therefore, it is necessary to regularly clean the main engine, filter screen and pipeline of the fresh air system to avoid the above problems. Although it will consume some energy, it is the same for any product, especially water dispensers, water purifiers, air conditioners, refrigerators and other household appliances.