Air filter is the core of the air conditioning and purification system, the filter on the air to form resistance, with the filter dust increases, the filter resistance will increase. When the filter dust is too much, the resistance is too high, the filter will be reduced by the air flow, or the filter is partially penetrated, so when the filter resistance increases to a certain value, the filter will be scrapped. Therefore, the use of filters, to grasp the appropriate use of the cycle. In the case of no damage to the filter, the general resistance to determine the service life.
Air filter is mainly used for air purification, remove the dust particles. In addition, some of the production process of exhaust gas containing small pollutants (such as radioactive material, oil mist, etc.) Although this type of purification purification, because of its high purification requirements, also need to use air filters. Air Filter (Air Filter) refers to the air filter device, generally used for clean workshop, clean room, laboratory and clean room, or for electronic mechanical communications equipment such as dust. Divided into early effects filter, medium efficiency filter, high efficiency filter and sub-efficient models. Various models have different standards and performance. This paper focuses on the main classification and characteristics of air filters and the efficiency of high efficiency filter filter table.
Filter filter layer to capture the role of particles are mainly 5 kinds
1. Interception effect: When a particle size of particles moving to the vicinity of the fiber surface, the center line to the fiber surface distance is less than the particle radius, dust particles will be blocked by the filter fiber and deposited.
2. Inertial effect: When the mass of particles is large or the speed is large, due to inertia and collision in the fiber surface and deposited.
3. Diffusion effect: small particle size particles Brown strong and easy to collision to the fiber surface.
4. Gravity effect: particles through the fiber layer, due to gravity deposition and deposition on the fiber.
5. Electrostatic effect: fibers or particles may be charged,Air Filter resulting in electrostatic effects to attract particles, and particles will be absorbed on the fiber surface.
Air filtration technology is mainly used filter separation method
1. By setting the performance of the filter, remove the dust in the air particles and micro-organisms, that is, through the filter material will be trapped dust particles trapped down to ensure that the amount of air into the cleanliness requirements. It uses the filter for the smaller diameter of the fiber,Air Filter both to smooth the air flow, but also can effectively capture dust particles.
2. Clean technology control Filtration of dust is generally 0.1 --- 10μm dust particles, particle size is small, contains solid particles and liquid particles; suspended organic particles in the atmosphere of microorganisms, plant pollen, tidbits and villi, microbes 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 effectively control,Air Filter it can effectively control the air bacteria, bacteria and viruses. To do this, it must be filtered by blocking the nature of the particulate filter. In general, the general high efficiency filter on the bacteria filtration efficiency of up to 99.996%, basically can meet the biological clean room filtration purification requirements.