How does the air filter work?

 1. Air filtration technology mainly adopts filtration separation method: by setting filters with different performance, the suspended dust particles and microorganisms in the air are removed, that is, the dust particles are captured and trapped by the filter material to ensure the cleanliness requirements of the air volume.  The filter material used is the fiber of fine diameter, which can not only make the air flow through smoothly, but also can effectively catch dust particles.  

2. Clean technology control filter dust is generally 0.1- 10μm dust particles, small particle size, containing solid particles and liquid particles;  Organic particles suspended in the atmosphere include microorganisms, plant pollen, catkins and villi. Microorganisms generally include viruses, Rickettsia, bacteria, fungi, protozoa and algae.  Air purification control is mainly bacteria and fungi, viruses.  Because the microorganisms are mainly attached to the dust particles, so the dust particles in the air can be effectively controlled, and the bacteria, fungi and viruses in the air can be effectively controlled.  To do this, it must be filtered through a barrier particle filter.  In general, the filtration efficiency of ordinary high efficiency filter for bacteria can reach 99.996%, which can basically meet the filtration and purification requirements of biological clean room.  

The filter layer of the filter can catch particles in five main ways:  

1. Interception effect: when particles of a certain size move near the surface of the fiber, the distance between the center line and the surface of the fiber is less than the radius of the particle, dust particles will be intercepted and deposited by the filter fiber.  

2. Inertia effect: When the particle mass or speed is larger, due to inertia and collision on the surface of the fiber and deposited.  

3. Diffusion effect: Particles with small particle size have strong Brownian motion and are easy to collide with the fiber surface.  

4. Gravity effect: when particles pass through the fiber layer, they are deposited on the fiber due to gravity sedimentation.  

5. Electrostatic effect: fibers or particles may be charged, resulting in electrostatic effect that attracts particles and attracts particles to the surface of fibers.  It's hard to find. I'll try.