Paper frame folding filters are widely used in various fields and scenarios due to their moderate filtration efficiency, low cost, and easy installation, as follows:
Air conditioning and ventilation systems
Central air conditioning fresh air unit: As a primary filtration device, it filters large particles of dust, pollen, hair and other impurities in the outdoor air, protects the core components such as heat exchangers and fans inside the air conditioning system from being contaminated or clogged, and at the same time reduces the burden on subsequent medium and high-efficiency filters, extending the service life of the entire system.
Commercial and household ventilation systems: In the ventilation systems of shopping malls, office buildings, hotels, residences, and other places, they are used to purify the air entering the room, improve indoor air quality, and provide people with a more comfortable breathing environment.
Cleanroom-related scenarios
Cleanroom return air filtration: In cleanrooms of industries such as electronics, pharmaceuticals, and precision instruments, paper frame folding filters are often used in the return air system to filter out some dust in the circulating air inside the room, maintaining the air cleanliness level of the cleanroom and ensuring the stability of the production or experimental environment.
Pre-treatment of cleanroom: In the air treatment process of a cleanroom, as a pre-filtration stage, it filters out most of the large-sized dust particles in the air in advance, creating favorable conditions for subsequent efficient filtration and enhancing the overall efficiency of the filtration system.
The field of industrial production
Dust prevention for electronic, mechanical and communication equipment: In places such as electronic component production workshops, mechanical processing workshops, and communication equipment rooms, it is used for filtering the ventilation openings of equipment to prevent dust from entering and depositing inside the equipment, avoiding affecting the normal operation, accuracy and service life of the equipment, such as protecting circuit boards and sensors of precision instruments.
In the production processes of the chemical, pharmaceutical, and food and beverage industries, ventilation systems must filter dust and impurities from the air to prevent them from contaminating raw materials, intermediate products, or final products. For instance, ventilation and filtration in pharmaceutical workshops can avoid the contamination of drugs by microorganisms and dust in the air. Filtration in food and beverage production workshops can ensure the hygiene and safety of products.
Painting and spraying operations: In workshops such as automotive manufacturing and furniture manufacturing that require painting and spraying, paper frame folding filters are used in the ventilation system of the spray booth to filter out dust and impurities in the air entering the spray booth, preventing them from adhering to the surface of the workpieces to be painted, thereby ensuring the quality and aesthetic appearance of the spray painting.
Other scenarios
In some non-core clean areas of the hospital, such as corridors and the ventilation systems of general wards, paper frame folding filters can be used for primary air filtration to help maintain the cleanliness of the indoor air.
Laboratory ventilation: For some ordinary laboratories with not extremely high requirements for air cleanliness, the ventilation system can use this filter to filter out some impurities in the air introduced from outside or discharged from inside.