Classification And Characteristics Of Various Air Filters
Classification And Characteristics Of Various Air Filters Purpose of primary air filter: filter section in general ventilation air treatment equipment or primary filtration of fresh air system. Features: The filter material can be replaced by yourself, and the initial effect of the paper frame is disposable.
G series: primary air filter has small resistance; large air volume; long service life.
Compliance scope: suitable for primary filtration of air conditioning systems. The primary air filter is suitable for the primary filtration of the air conditioning system and is mainly used to filter dust particles above 5 μm. There are three types of primary filters: plate type, folding type, and bag type. The outer frame materials include paper frames, aluminum frames, and galvanized iron frames. The filter materials include non-woven fabrics, nylon mesh, activated carbon filter materials, metal mesh, etc., and protection The nets include double-sided spray-coated wire mesh and double-sided galvanized wire mesh.
(1)The characteristics of primary filter are: cheap, light weight, good versatility and compact structure. Mainly used for:
a. Central air conditioning and centralized ventilation system pre-filtration
b. Large air compressor pre-filtration
c. Clean return air system
d. Pre-filtration of local high-efficiency filtration device
e. High temperature resistant air filter, with stainless steel frame, high temperature resistant 250-300℃ filtration efficiency
Filters of this efficiency are commonly used as primary filtration in air conditioning and ventilation systems, and are also suitable for simple air conditioning and ventilation systems that only require primary filtration. G series coarse-efficiency air filters are divided into eight varieties, namely: G1, G2, G3, G4, GN (nylon mesh filter), GH (metal mesh filter), GC (activated carbon filter), GT (high temperature resistance) coarse filter).
(1) Purpose of foldable medium-efficiency air filter: filtration in ventilation systems. Daily air purification in electronics, pharmaceuticals, mechanical instrumentation, metallurgy, petroleum, chemical industry, light industry, food and other fields. Features: high efficiency, large dust holding capacity, small space occupation.
(2) Purpose of bag-type medium-efficiency air filter:
Central air-conditioning centralized ventilation system, or as a pre-filter for high-efficiency filters. It can reduce the burden of high-efficiency filters and extend their service life. It can also be used in the industrial field. Normal air purification. Features: small resistance, large dust holding capacity.
Medium efficiency filters are mainly used in central air conditioning and centralized air supply systems. It can be used for the primary filtration of the air-conditioning system to protect the next-level filter in the system and the system itself. In places where the requirements for air purification are not strict, the air processed by the medium-efficiency filter can be sent directly to the user. The frame of the high-efficiency bag filter comes in the form of cold plate spray-coating, galvanized sheet, etc. The filter materials include non-woven fabric, glass fiber, etc., the filter particle size is 1~5um, and the filtration efficiency is 60~95% (colorimetric method).
Medium-efficiency air filters are mainly used to capture 15 μm particle dust and various suspended solids. They are widely used in various air-conditioning equipment and air-conditioning systems, and are also used for intermediate protection of multi-stage filtration systems. This series of products mainly has a bag structure, and the outer frame materials include: aluminum alloy, galvanized steel plate, and can also be made frameless. The filter element material is mainly non-woven fabric.
1) Function: Capture 15um dust particles
2) Type: frameless type and framed bag type
3) Filter material: special non-woven fabric or glass fiber
4) Efficiency: 60%～95%@1～5um (colorimetric method)
F series medium-efficiency air filters are divided into bag type and non-bag type. Bag type includes F5, F6, F7, F8, F9. Non-bag type includes FB (plate type medium efficiency filter), FS (partition type medium efficiency filter). efficiency filter), FV (combined medium efficiency filter).
GK series high-efficiency air filter high-efficiency air filter is mainly used in microelectronics industry, precision instrumentation, medical and health, bioengineering, pharmaceutical and food industries and various types of clean rooms, clean tunnels, high-efficiency air supply outlets, purification workbench, Final air filtration in purification equipment such as air shower rooms. This product uses ultra-fine glass fiber filter material, hot sol as the separator, special aluminum profile frame, polyurethane two-component sealant, closed-cell sponge sealing strip, spray-coated steel mesh flow plate, etc. and is refined through strict processes.
1) Function: Capture fine particles of 0.1~0.5um
2) Type: aluminum alloy frame, no partitions
3) Filter material: ultrafine glass fiber paper
4) Efficiency: 99.999%@0.3um (DOP method)
(3) Purpose of activated carbon filter:
Effectively remove odors, volatile agents, bacteria, viruses and various air pollutants, such as paint spray, smoke, common pollutants in electronic factories and museums, as well as food processing plants and hospitals The stench. Features: Highly developed microporous structure, high adsorption capacity, fast adsorption and desorption speed, and good purification effect. Pre-filtration is required when using activated carbon filtration. Otherwise, the efficiency of activated carbon will be reduced due to other pollutants in the air.
Activated carbon filter. It is mainly used to remove gas, hair loss, vapor smell and smoke. The removal of odor increases the proportion of room return air, thereby reducing the energy loss of heating and cooling. The proportion of carbon tetroxide in the activated carbon filter With a carbon content of more than 63%, the filter can be used with boxes produced by most manufacturers.
(4) Purpose of nylon mesh air filter:
used as primary pre-filtration in ventilation and air conditioning systems with low air quality requirements, or in places with harsh surrounding environment and high dust. Features: low resistance, easy to clean and easy to maintain.
(5) Sub-high-efficiency air filter uses:
end-end filtration or clean room filtration in various clean projects as well as central air-conditioning and process air supply systems with special requirements. Features: high filtration efficiency, low resistance, large dust holding capacity.
(6) Use of high-efficiency air filter:
clean air conditioning system, high cleanliness environment. Features: high efficiency, low resistance.
High-efficiency filters are divided into high-efficiency filters with partitions and high-efficiency filters without partitions. High-efficiency filters with partitions include (high-efficiency filters with partitions), (high-temperature-resistant high-efficiency filters), (high-humidity-resistant high-efficiency filters) ); high-efficiency filters without partitions include (combined high-efficiency filters), (high-efficiency filters without partitions), (high-efficiency filters without partitions in liquid tanks), (ultra-low resistance high-efficiency filters without partitions), ( Knife-holder type high-efficiency filter without partitions), (0.1um ultra-high-efficiency filter).
(7) Use of high-efficiency filter with large air volume:
high-performance filter at the end of the air-conditioning box. Classification And Characteristics Of Various Air Filters: high filtration efficiency, large air volume, and large dust holding capacity.
(8) Aluminum mesh air filter:
Purpose: used as primary pre-filtration in ventilation and air-conditioning systems with low air quality requirements, or in places with harsh surroundings, dust and grease. Features: Durable and easy to clean.
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