Seven categories and characteristics of filter for household fresh air system
1,the initial effect filter:It is made of white non-woven folded,folded part of the expansion,the area is enlarged several times before the eyes,the filter area is large enough.As a primary filter,it can effectively prevent large particles in the air from entering the body.
2.Medium efficiency filter:light weight,beautiful appearance,sturdy and durable structure;using folded filter cotton as filter material,glued together with aluminum frame or original black cardboard frame,large filtration area,more dust holding capacity Large,dust particles in the air are effectively blocked by the filter material between the folds and pleats,and can effectively filter particles in air above 5um;
3,HEPA filter:It is made of folded composite filter paper,like paper,as we see,HEPA filter is mostly white,composed of hundreds of regular folds.A good HEPA filter has a 99.99%filtration efficiency for particles with a diameter of 0.3 microns or more,and can efficiently remove PM2.5,respirable particles,and dust.
4.Activated carbon filter:Activated carbon filter adopts aluminum honeycomb,plastic honeycomb and paper honeycomb with through-hole structure as carrier.Compared with the traditional activated carbon filter,it has better gas dynamic performance,small volume density,large surface area,high adsorption efficiency,and small wind resistance coefficient.Honeycomb activated carbon filter is made by adding powdered activated carbon on polyurethane foam,and its carbon content is about 35%-50%.It has an efficient adsorption of activated carbon and can be used in air purification to remove volatile organic compounds such as formaldehyde,toluene,hydrogen sulfide,chlorobenzene and air pollutants.With low air resistance and low energy consumption,it can deodorize and remove odors under a certain amount of air,purify the environment,and has a very good purifying effect.
5.Plasma dust collection net(electrostatic dust collection box):It adopts a unique patented design.The electrostatic dust collection box adopts the inner carbon fiber electrode plate and the outer PP material to prevent the metal from contacting with the air and produce no ozone.With dense vertical and horizontal arrangement,it has the features of light weight,large contact area,and good dust collecting effect.It is convenient for maintenance and cleaning.Its function is to catch soot,bacteria,respirable particles,etc.in the air.When used in combination with HEPA,HEPA dust collection and sterilization efficiency and service life can be improved.
6.Photocatalyst filter:The nano titanium dioxide photocatalyst is used as raw material,and the latest technology is used to make the photocatalyst adhere to the surface of different substances with the smallest particles.The photocatalyst is solar,fluorescent,and ultraviolet light as the energy source.The electron(e-)on the excitation valence band The transition to the conduction band produces a corresponding hole(h+)in the valence band,generating active oxygen and hydroxyl radicals with a very strong oxidation action,and the harmful organic substances such as formaldehyde,methylamine,benzene,xylene,TVOC,and pollution The oxidative decomposition of matter,odor,bacteria,etc.into harmless CO2 and H2O,to the purpose of purifying the air and decomposing harmful organic matter.
7.Formaldehyde filter:It is a strainer that is specially used to filter formaldehyde.It can not be used alone under normal circumstances,but it must be installed in other equipment to play the role of filtering and adsorbing formaldehyde in the air.Some of the composite high-efficiency formaldehyde removal filters not only have high-efficiency absorption of formaldehyde,but also can effectively filter allergens and bacteria.The main difference between it and the activated carbon filter is that it is a combination of activated carbon and microfibers,and the removal efficiency is higher.