The role of the air filter is to trap dust and other impurities in the air, purify the air entering the equipment or the room, thereby protecting the operation of the equipment and improving the air quality. It uses porous filter materials to purify the air with low dust content into the room or other equipment to ensure the process requirements of clean rooms and the air cleanliness in general air-conditioned rooms. Air filters are widely used in homes, industries, biopharmaceuticals, hospitals and other places, and its main functions are as follows:
1. Capture dust particles in the air
(1) Primary filter
It is mainly used to trap dust particles ≥5μm, usually as a pre-filter, protecting medium and high efficiency filters, and extending their service life.
(2) Medium effect filter
It is used to remove ≥1.0μm dust particles, reduce the load of high efficiency filter, and also play an intermediate protection role.
(3) high efficiency filter
It can remove dust particles ≥0.3μm, and is used in precision fields such as aerospace, electronics, pharmaceutical and other environments to ensure high standards of air cleanliness.
2. Separate liquid water and oil droplets
(1) Remove water and oil droplets
Air filters can separate liquid water and oil droplets from compressed air, but they cannot remove water and oil in the gaseous state.
(2) Protect equipment
Prevent rust, sand and other solid impurities from damaging the piston seal ring and blocking the small exhaust hole, thereby extending the service life of the components.
3. Improve air quality
(1) Adsorption of small particles
The filter traps dust through porous materials, allowing gas to be purified, thereby improving indoor air quality.
(2) Applied to human settlements
Such as biopharmaceuticals, hospitals, airport terminals and other places, in addition to filtering dust, but also to absorb odor, improve air quality.
4. Protect the air conditioning system
(1) The filtration effect of the return air outlet
In the air conditioning purification system, the return air filter is very important to maintain the indoor air quality, and its filtering effect affects the operation of the end equipment
Service life and heat transfer efficiency.
(2) Prevent cross-contamination of pollutants
In clean engineering, increasing the efficiency of the return air filter helps to prevent cross-contamination of different workshop pollutants.
5. Air filter has multiple types
(1) Primary filter
Suitable for primary filtration of air conditioning and ventilation systems, as well as pre-filtration of local high-efficiency filtration devices.
(2) Medium effect filter
It is suitable for the primary filtration of industrial and commercial, hospital and other places, direct air supply or as the pre-filtration of gas turbine inlet equipment.
(3) high efficiency filter
It is suitable for the environment with high air purification requirements under normal temperature and constant humidity conditions, such as aviation, electronics and other fields.