HEPA filters have the following main features:
High filtration efficiency: HEPA filters can filter particulate dust and various suspended solids below 0.5um, and the filtration effect is very good. Its filtration efficiency can usually reach more than 99.996%, which can meet the requirements of high cleanliness.
Low resistance: HEPA filters are designed with low resistance, which can reduce the operating resistance of the equipment while ensuring high filtration efficiency, thereby reducing energy consumption and equipment loss, and extending service life.
Large dust holding capacity: HEPA filters have a large dust holding capacity and can maintain high filtration performance during long-term use, reducing the need for frequent filter replacement.
Stable material: The filter material and partition plate materials of HEPA filters are stable, have good corrosion resistance, and are not easy to crack, ensuring the stability and durability of the filter.
Wide application: HEPA filters are widely used in the air supply of air conditioners in dust-free purification workshops in optical electronics, LCD liquid crystal manufacturing, biomedicine, precision instruments, beverages and foods, PCB printing and other industries.
The working principle of high-efficiency air filters mainly includes physical interception, inertial collision, diffusion and electrostatic adsorption. When the diameter of the particles in the air is larger than the gap between the filter fibers, the particles will be directly intercepted; larger particles will collide and adhere to the fibers due to inertia; smaller particles will continuously collide and be captured by the filter fibers due to Brownian motion; in addition, the static electricity on the filter fibers can adsorb charged particles and enhance the filtering effect.