Working Mechanism of Condensed Filter with Glass Fiber as Core
Air flows in from the middle of the filter element and collects oil droplets through four mechanisms of gravity, inertial collision, direct interception and infiltration.
Gravity action: when the air flow velocity in the filter is low, the oil droplets with a diameter of 20-50μ m are mostly collected by gravity free fall before reaching the filter layer, and the air flow also continues to fall down and collect when flowing through the filter screen. The higher the air velocity, the lower the efficiency.
Inertial collision: suspended particles with a diameter larger than lμm usually have a large impulse. It does not always coincide with the air flow path and thus will hit the fiber layer inertially. The greater the air velocity, the greater the collision rate.
Direct interception: particles with a diameter of 0.3-1 μ m move with the airflow, and most of them will be intercepted by the fiber layer at the filter element l/2 and separated. The smaller the particle, the lower the interception rate.
Infiltration: particles with diameter less than O．3μm m. Because its mass is too small, it no longer has the usual characteristics of liquid. They move in an irregular Brownian motion, which is inconsistent with the airflow path. It is precisely because of this motion that they can be captured by finer filter layers. The smaller the particle. The more intense Brownian motion, the greater the probability of capture.
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