What Are The Types Of Air Filters That Can Be Classified Into

Air filter is a type of air filter device that is commonly used in clean workshops, workshops, laboratories, and cleanrooms. It is also used in industries such as electronics, automobiles, hospitals, and pharmaceuticals. Air filters are divided into primary efficiency filters, medium efficiency filters, and high-efficiency filters.
The particle size that the primary filter can filter is generally greater than or equal to 5 microns, and for this particle filtering phenomenon, it can reach 35%; Medium efficiency filters can filter particles larger than or equal to 1 micron, achieving a filtration efficiency of 60-95%; The high-efficiency filter has a filtration efficiency of around 98 for particles with a diameter of 0.5 microns.
There are generally three types of primary filters: plate type, folding type, and bag type. Its outer frame is made of paper frame, aluminum frame, galvanized iron frame, etc. The filter materials include non-woven fabric, activated carbon cotton, metal mesh, nylon mesh, fiberglass, etc. Due to the low filtration degree of the primary filter, it is generally installed in the pre filtration of filtration equipment, commonly used in pre filtration of air conditioning systems and centralized ventilation systems, pre filtration of large air compressors, and pre filtration of some high-efficiency filtration devices, as well as in some clean return air systems.
Medium efficiency filters are divided into three types: bag type, plate and frame type, and combination type. The frame is made of aluminum alloy and galvanized plate, and the filter material is generally non-woven fabric, PP or glass fiber. Medium efficiency filters are often used for the initial filtration of air conditioning systems and are the pre filtration of high-efficiency filters. If there is no high requirement for cleanliness, medium efficiency air filters can be chosen.
There are three types of high-efficiency filters, including those with or without partitions, those with partitions, and combination filters, which have good filtration performance. They are used in industries such as microelectronics, precision instruments and meters, medical and health, biotechnology, pharmaceuticals, cleanrooms, purification workstations, and other industries that require high cleanliness. In addition, they can also be used as terminal air filters in purification equipment such as cleanrooms, high-efficiency air supply outlets, purification workstations, and shower rooms.