Deep Pleated HEPA filters are designed to give the optimum combination of high filtration efficiency and excellent dust Filter holding frames capacity. If you want to use deep pleated HEPA filter, you would better know its working principle firstly.
The first step of deep pleated HEPA filter working principle is intercepting. The dust and particles remove in the air with the air or non-inertial motion of the rules by the Brownian motion of a field of force, or the action of movement. When the movement of particles hit other objects, objects stick into the fiber surface. Dust into the filter media has a chance to hit more media. Once it hits the media, the dust will be stuck. Smaller dust will be collide particles bonded to each other to form larger settlement. The concentration of dust particles in the air is relatively stable.
The second step of deep pleated HEPA filter working principle is inertia and diffusion. It can be divided into two parts-Electrostatic interaction and Chemical filtration. In the progress of electrostatic interaction, fibers and particles may bring charges generate electrostatic effects. Electrostatic filter material filtering effect of significantly improved. This is because the static electricity and dust can change the trajectory to hit obstacles. After the material with a static resistance unchanged, the filtering effect will be significantly improved. Electrostatic doesn’t play decisive role in filtering effect, it only plays a supporting role. However, in the progress of chemical filtration, things are different. The main Chemical filter is a selective adsorption of harmful gas molecules. Activated carbon materials have pores and a large number of large adsorption areas invisible. After contacting the free molecule activated carbon, condensed into a liquid in the micro pores. This principle parked in the liquid due to capillary pores. No significant adsorption of a chemical reaction is called physical adsorption. Particles with the adsorbed material are reacted to form a solid substance or a non-toxic gas which is called chemisorption. Activated carbon adsorption capacity in the course materials continue to weaken. When it reduced to a certain extent, the filter will be scrapped.
The last step of Deep Pleated HEPA Filter working principle is the effect of gravity. When the particles went through the fiber layers by gravity, displacement of the air flow occurs from the line and settling on the fiber surface. This will happen only in particles> 0.5um presence, this is because the particles of gravity are too small. Thus, for a particle size of less than 0.5um filtration, gravity sedimentation can be ignored.
This is the deep pleated HEPA filter working principle. If you are interested in deep pleated HEPA filter, you can visit www.hefilter.com for more information.
