The choice of fresh air filter, you will understand after reading it!

The choice of fresh air filter, you will understand after reading it!

The fresh air system gradually enters the lives of the general public. Unlike an air purifier, it not only purifies the indoor air. On the one hand, it introduces outdoor oxygen-enriched air through layers of fans and filters it to provide people indoors with pure to pure oxygen while collecting indoor air. The polluted air is discharged to the outside through the air return port, and the indoor and outdoor air is circulated in real time.

　　 Fresh air systems generally have three layers of filters, which are primary, medium and high-efficiency filters. Choosing a fresh air blower with a suitable air volume and three-layer filter can basically meet the needs of indoor air purification. So do you know about the filter? The filter is an important part of the fresh air system, the filter effect is not obvious, the function is not strong, and the role of the fresh air system is not prominent. Today, the editor will share with you the types of filters and their functions, so that you can also use the filters as one of the elements of reference when purchasing a fresh air system.

　　1. The initial filter is made of white non-woven fabric folded. After the folded part is unfolded, the area is magnified several times and the filter area is large enough. As a primary filter, it can effectively prevent large particles of dust in the air from entering the body;

2. Medium-efficiency filter, light weight, beautiful appearance, sturdy and durable structure; using folded filter cotton as filter material, glued with aluminum frame, large filtering area, larger dust holding capacity, and dust particles flowing into the air The filter material is effectively blocked between pleats and pleats, and can effectively filter particles above 5um in the air;

　　3. The HEPA filter is made of folded composite filter paper, like paper. As we can see, the HEPA filter is mostly white and consists of hundreds of regular folds.

　　4. Activated carbon filter, which uses aluminum honeycomb, plastic honeycomb and paper honeycomb with through-hole structure as the carrier. Compared with the traditional activated carbon filter, it has better aerodynamic performance, small volume density, large surface area, high adsorption efficiency, and small wind resistance coefficient. The honeycomb activated carbon filter is made of polyurethane foam loaded with powdered activated carbon, and its carbon content is about 35%-50%. It has the high-efficiency adsorption performance of activated carbon and can be used for air purification to remove volatile organic compounds formaldehyde, toluene, hydrogen sulfide, chlorobenzene and pollutants in the air. The air resistance is small, the energy consumption is low, it can deodorize, deodorize and purify the environment under a certain air volume, and has a good purification effect.

　　5. Plasma dust collection net (electrostatic dust collection box), the electrostatic dust collection box uses the inner layer of carbon fiber electrode plate, the outer layer of PP material, which eliminates the contact between metal and air, and no ozone is generated. It adopts horizontal and vertical dense arrangement, has the characteristics of light weight, large contact area, good dust collection effect, and convenient maintenance and cleaning. Its effect is to capture oily fume, bacteria, and inhalable particles in the air. When combined with HEPA, it can improve the dust collection and sterilization efficiency and service life of HEPA.

6. Photocatalyst filter screen, using nano-titanium dioxide photocatalyst as raw material, combined with z* new technology to make the photocatalyst uniformly adhere to the surface of different materials with z* small particles. (e-) Transitions to the conduction band, generating corresponding holes (h+) in the valence band, generating active oxygen and hydroxyl radicals with strong oxidizing effect, and converting formaldehyde, methylamine, benzene, xylene, TVOC, etc. Hazardous organics, pollutants, odors, bacteria, etc. are oxidized and decomposed into harmless CO2 and H2O to achieve the purpose of purifying the air and decomposing harmful organics.

　　7. The formaldehyde filter is a filter specially used to filter formaldehyde. Normally, it cannot be used alone, but must be installed in other equipment to filter and adsorb formaldehyde in the air. Part of the composite high-efficiency formaldehyde removal filter not only has the function of high-efficiency absorption of formaldehyde, but also effectively filters allergens and bacteria. The main difference between it and activated carbon filter is that it is a combination of activated carbon and microfiber, which has a higher removal efficiency.