Flat plate air filters, with their simple structure, low cost and strong adaptability, are widely used in the “pre-filtration” or “primary filtration” scenarios of air purification. Some medium and high-efficiency models can also be used for specific mid-range purification needs. The core application fields can be classified into three major categories: “civil buildings”, “industrial production” and “special scenarios”, as follows:
I. Civil Buildings and Public Spaces: Ensuring Indoor air quality
The core demand of such scenarios is to filter out large particles such as suspended dust, hair, and pollen in the air, protect the air conditioning and ventilation system, and improve indoor comfort at the same time. Common application scenarios include:
Office and commercial Spaces: Central air conditioning fresh air systems for office buildings, commercial buildings, shopping malls, supermarkets, hotel lobbies, etc. As a pre-filtering device, it can intercept dust, poplar catkins and other substances in the outdoor fresh air, prevent the accumulation of dust and the breeding of bacteria inside the air conditioner, and extend the service life of core components such as fans and coil units.
Medical and educational facilities: hospital outpatient halls, corridors of inpatient departments, school classrooms, libraries, etc. It is necessary to filter out dust and droplet residues in the air (primary interception) to reduce the load on subsequent medium and high-efficiency filtration (such as in wards and operating rooms) and lower the risk of cross-infection.
Transportation hubs and public places: Ventilation systems for large Spaces such as airport terminals, railway station waiting halls, subway platforms, and stadiums. In such scenarios, there is a large flow of people and a lot of outdoor dust intrusion. Flat plate filters can efficiently intercept coarse particles, maintain a stable ventilation volume, and prevent air turbidity.
Residential and apartment: Primary filter modules for household central air conditioning and fresh air systems, or pre-filter screens for wall-mounted fresh air machines. It can filter out coarse particles (PM10), sand, insect carcasses and other substances in outdoor haze, protect indoor fans and reduce the accumulation of indoor dust.
Ii. Industrial production field: Protecting equipment and production environment
The demands in industrial scenarios place more emphasis on “protecting production equipment” and “maintaining basic cleanliness” to prevent dust from affecting product quality or damaging precision machinery. The main applications are:
Centralized ventilation systems for general industrial plants: mechanical processing workshops, electronic component assembly workshops, printing workshops, plastic molding workshops, etc. It can filter metal shavings, plastic dust, ink particles, etc. in the workshop, prevent dust from adhering to the surface of products (such as short circuits of electronic components, defects in printed matter), and at the same time reduce the wear of equipment (such as machine tools, printing presses).
Food and pharmaceutical industry (pre-filtration) : Food processing plants (such as biscuit and milk powder production), raw material warehouses in pharmaceutical factories, and ventilation systems in outer packaging workshops. As a pre-filter for medium and high-efficiency filters (such as H10 and above), it intercepts flour, medicinal powder particles, hair, etc. in the workshop to prevent contamination of raw materials or packaging, meeting the basic cleanliness requirements of GMP (Good Manufacturing Practice) for food and drugs.
Chemical and coating industry: “Exhaust air pre-treatment” or “fresh air pre-filtration” in paint production workshops and furniture spray booths. It can filter out particulate impurities in paint dust and volatile solvents, prevent exhaust duct blockage, or avoid outdoor dust from mixing into the paint and affecting the coating effect (such as paint surface particles).
Power and energy industry: generators, transformers, and cooling and ventilation systems for photovoltaic panels in thermal power plants and photovoltaic power stations. Intercept coal dust, sand dust, willow catkins and other substances in the air to prevent dust from adhering to the heat sinks of the equipment, which may cause poor heat dissipation and avoid equipment overload or shortened service life.
Iii. Special Scenarios: Adapted to specific filtering requirements
In addition to general scenarios, flat plate filters can also be adapted to some special demand scenarios based on the filter material grade (such as medium and high efficiency) or structural design
Cleanrooms and laboratories (pre-filtration) : Front ends of ventilation systems for semiconductor cleanrooms, biosafety laboratories, and microbiological culture rooms. As a pre-filter for high-efficiency air filters (HEPA) or ultra-high-efficiency air filters (ULPA), it intercepts over 90% of coarse particles (such as G4 grade), significantly reducing the load on HEPA and extending its replacement cycle (HEPA is relatively expensive).
Automobile manufacturing and maintenance: Pre-treatment of welding fumes in the final assembly workshop of automobiles, and fresh air filtration in the spray booth of 4S store maintenance workshops. It can filter out metal smoke and dust particles produced during welding and coarse paint mist particles during painting, protecting the health of operators and preventing smoke and dust from polluting the car body (such as impurities at welding points and paint surface defects).
Agriculture and animal husbandry: Ventilation systems for large greenhouses and fresh air filtration for livestock and poultry farms (such as chicken farms and pig farms). It can filter outdoor pollen, weed seeds and insects (such as aphids), prevent crop pollen allergy or livestock and poultry infection by pests and diseases, and at the same time reduce the circulation and diffusion of indoor manure and dust.
Data centers and computer rooms: Air conditioning and ventilation systems for server rooms and data centers. Intercept dust and fibers in the air to prevent dust from adhering to precision components such as server motherboards and hard disks, avoid short circuits or heat dissipation failures, and ensure the stable operation of data equipment.
Summary: Core application logic
The essence of the application of flat plate filters is “the first line of defense for staged filtration” – whether in civilian or industrial scenarios, its core value lies in:
Intercept coarse particle impurities, reduce the burden on downstream medium and high-efficiency filters, and lower the operating cost of the overall filtration system;
Protect ventilation equipment (such as fans, coil units, and precision instruments) from dust wear or blockage;
Maintain the basic air cleanliness and meet the minimum dust control requirements of different scenarios (such as civil comfort and the basic quality of industrial products).
When making a selection, it is necessary to match the corresponding material (such as polyester fiber, glass fiber) and specification of the flat filter based on the dust concentration of the scene, the filtration accuracy requirements (such as G4, F6, H10 grades) and the installation space (such as the size of the air conditioning unit, the diameter of the fresh air duct).
I. Civil Buildings and Public Spaces: Ensuring Indoor air quality
The core demand of such scenarios is to filter out large particles such as suspended dust, hair, and pollen in the air, protect the air conditioning and ventilation system, and improve indoor comfort at the same time. Common application scenarios include:
Office and commercial Spaces: Central air conditioning fresh air systems for office buildings, commercial buildings, shopping malls, supermarkets, hotel lobbies, etc. As a pre-filtering device, it can intercept dust, poplar catkins and other substances in the outdoor fresh air, prevent the accumulation of dust and the breeding of bacteria inside the air conditioner, and extend the service life of core components such as fans and coil units.
Medical and educational facilities: hospital outpatient halls, corridors of inpatient departments, school classrooms, libraries, etc. It is necessary to filter out dust and droplet residues in the air (primary interception) to reduce the load on subsequent medium and high-efficiency filtration (such as in wards and operating rooms) and lower the risk of cross-infection.
Transportation hubs and public places: Ventilation systems for large Spaces such as airport terminals, railway station waiting halls, subway platforms, and stadiums. In such scenarios, there is a large flow of people and a lot of outdoor dust intrusion. Flat plate filters can efficiently intercept coarse particles, maintain a stable ventilation volume, and prevent air turbidity.
Residential and apartment: Primary filter modules for household central air conditioning and fresh air systems, or pre-filter screens for wall-mounted fresh air machines. It can filter out coarse particles (PM10), sand, insect carcasses and other substances in outdoor haze, protect indoor fans and reduce the accumulation of indoor dust.
Ii. Industrial production field: Protecting equipment and production environment
The demands in industrial scenarios place more emphasis on “protecting production equipment” and “maintaining basic cleanliness” to prevent dust from affecting product quality or damaging precision machinery. The main applications are:
Centralized ventilation systems for general industrial plants: mechanical processing workshops, electronic component assembly workshops, printing workshops, plastic molding workshops, etc. It can filter metal shavings, plastic dust, ink particles, etc. in the workshop, prevent dust from adhering to the surface of products (such as short circuits of electronic components, defects in printed matter), and at the same time reduce the wear of equipment (such as machine tools, printing presses).
Food and pharmaceutical industry (pre-filtration) : Food processing plants (such as biscuit and milk powder production), raw material warehouses in pharmaceutical factories, and ventilation systems in outer packaging workshops. As a pre-filter for medium and high-efficiency filters (such as H10 and above), it intercepts flour, medicinal powder particles, hair, etc. in the workshop to prevent contamination of raw materials or packaging, meeting the basic cleanliness requirements of GMP (Good Manufacturing Practice) for food and drugs.
Chemical and coating industry: “Exhaust air pre-treatment” or “fresh air pre-filtration” in paint production workshops and furniture spray booths. It can filter out particulate impurities in paint dust and volatile solvents, prevent exhaust duct blockage, or avoid outdoor dust from mixing into the paint and affecting the coating effect (such as paint surface particles).
Power and energy industry: generators, transformers, and cooling and ventilation systems for photovoltaic panels in thermal power plants and photovoltaic power stations. Intercept coal dust, sand dust, willow catkins and other substances in the air to prevent dust from adhering to the heat sinks of the equipment, which may cause poor heat dissipation and avoid equipment overload or shortened service life.
Iii. Special Scenarios: Adapted to specific filtering requirements
In addition to general scenarios, flat plate filters can also be adapted to some special demand scenarios based on the filter material grade (such as medium and high efficiency) or structural design
Cleanrooms and laboratories (pre-filtration) : Front ends of ventilation systems for semiconductor cleanrooms, biosafety laboratories, and microbiological culture rooms. As a pre-filter for high-efficiency air filters (HEPA) or ultra-high-efficiency air filters (ULPA), it intercepts over 90% of coarse particles (such as G4 grade), significantly reducing the load on HEPA and extending its replacement cycle (HEPA is relatively expensive).
Automobile manufacturing and maintenance: Pre-treatment of welding fumes in the final assembly workshop of automobiles, and fresh air filtration in the spray booth of 4S store maintenance workshops. It can filter out metal smoke and dust particles produced during welding and coarse paint mist particles during painting, protecting the health of operators and preventing smoke and dust from polluting the car body (such as impurities at welding points and paint surface defects).
Agriculture and animal husbandry: Ventilation systems for large greenhouses and fresh air filtration for livestock and poultry farms (such as chicken farms and pig farms). It can filter outdoor pollen, weed seeds and insects (such as aphids), prevent crop pollen allergy or livestock and poultry infection by pests and diseases, and at the same time reduce the circulation and diffusion of indoor manure and dust.
Data centers and computer rooms: Air conditioning and ventilation systems for server rooms and data centers. Intercept dust and fibers in the air to prevent dust from adhering to precision components such as server motherboards and hard disks, avoid short circuits or heat dissipation failures, and ensure the stable operation of data equipment.
Summary: Core application logic
The essence of the application of flat plate filters is “the first line of defense for staged filtration” – whether in civilian or industrial scenarios, its core value lies in:
Intercept coarse particle impurities, reduce the burden on downstream medium and high-efficiency filters, and lower the operating cost of the overall filtration system;
Protect ventilation equipment (such as fans, coil units, and precision instruments) from dust wear or blockage;
Maintain the basic air cleanliness and meet the minimum dust control requirements of different scenarios (such as civil comfort and the basic quality of industrial products).
When making a selection, it is necessary to match the corresponding material (such as polyester fiber, glass fiber) and specification of the flat filter based on the dust concentration of the scene, the filtration accuracy requirements (such as G4, F6, H10 grades) and the installation space (such as the size of the air conditioning unit, the diameter of the fresh air duct).
