Capture the effect of particle filter layer and high efficiency filter mainly has five kinds:

1.Interception effect: when a particle size of particles movement to near the surface of the fiber, its distance from centerline to the fiber surface is less than the particle radius, dust particles would be blocked by liao fiber and deposited.

2. The inertial effect: when particles larger quality or speed is bigger, because of its inertia collision deposited on the fiber surface.

3. The diffusion effect: a small particle size particles Brownian motion, strong and easy to crash on the fiber surface.

4. The gravity effect: particles through fiber layer, deposited on the fiber by gravity settling.

5. Electrostatic effect: fiber or is likely to be charged particles, attract particle electrostatic effect, and the particles on the fiber surface.

With dust capture more and more, the filtering efficiency of the filter layer followed down, and the resistance increased; When drag to a certain value or efficiency to a certain value, the filter will need to replace in time, to ensure the purification cleanliness requirements.