The rise of the air purifier industry
how air purifiers work
by：Yovog
2023-10-06
Type of air purifier some air purifiers clean the air by removing the filter of the particles.
These are sometimes called air purifiers.
In the home, these filters are often part of a heating or cooling system.
Install the filter housing between the return duct and the furnace.
The cartridge slides into this housing, so all the air flowing into the furnace is filtered out.
This can not only remove contaminants in the air, but also prevent damage to the stove from the accumulation of dust and dirtup.
The filter can also be placed in the air outlets in each room of the house.
Typical materials include foam, cotton, fiberglass or synthetic fibers.
To some extent, the density of the filter material is limited--
The very dense filter has a smaller gap and can capture very small particles.
The Fold filter works best because the surface area of the capture particles is increased.
However, the filter is able to capture particles smaller than the minimum gap in the filter material.
Air filters can be expensive and you have to replace them to keep them working (
Some filters are washable).
They also limit the airflow through the system, resulting in a decrease in overall efficiency. HEPA (
High Efficiency Particulate Air)
The filter meets the DOE standard for removing particles from the air.
As long as the filter meets this standard, it can consist of any material-
Penetration is less than 0.
03% particles 0.
Size or larger [3 microns]source].
The filter must also allow a specific amount of air to flow through, depending on the size of the filter. The ULPA (Ultra-
Low penetration Air)
The standards are stricter.
In addition to the air of household cleaning allergens and dust particles that they are familiar with, the nuclear power industry uses advanced HEPA filters.
These air purifiers use a method called discharge to produce charged molecules called ions.
Most atoms in the air have neutral charges. -
They have the same number of negative-
Electronic with positive electricityCharged proton
The corona discharge is a small and intense electric field.
The molecule that passes through it will get an extra electron, give the molecule a negative charge, or it may get knocked down by an electron and give it a positive charge.
Larger particles in the air, such as dust or other contaminants, are more likely to be ionised because they create larger targets for electrons when discharged through the corona.
Once the particle is charged, it will be attracted to anything with the opposite charge.
Charging two metal plates in the purifier (
1 Negative, 1 positive)
Attract these particles.
In addition, if the particles in the air have opposite charges, they attract each other.
When particles gather together, they become heavier and eventually they settle down from the air.
The ozone generator works much like an ionization purifier, but it is designed to change the oxygen molecule and convert it into ozone, a molecule consisting of three oxygen atoms.
Oxygen in the atmosphere exists in the form of dioxygen, which is a molecule consisting of two oxygen atoms.
When these molecules are exposed to corona discharge or ultraviolet rays, some dioxic molecules split into separate oxygen atoms (free oxygen).
Some atoms form ozone when most of the oxygen is regrouped into dioxygen.
The manufacturers of these devices claim that ozone will deodorant and disinfect the air.
Many also claim that the presence of ozone has other health benefits.
There is strong evidence, however, that ozone does not achieve air purification.
Ozone is also known as a toxic gas.
It\'s not a very stable molecule. -
It is easy to react with other chemicals in the air to form new compounds that are more dangerous than ozone itself.
Ozone also oxidized metal, causing corrosion.
The same process of producing ozone also produces nitrogen oxides, resulting in further reactions with compounds in the air and ozone itself.
Many purifiers use adsorption materials to treat odors, smoke and chemicals in the air. Adsorption (not absorption)
It is a process in which a substance is trapped on the surface of another substance.
The most common adsorption agent is activated carbon, which has great porosity and has many microscopic \"corners and gaps\" to capture the molecules passing through.
The larger particles just stay in many pores of charcoal.
Static electricity attracts some substances into pores.
Some substances react and combine with charcoal.
The high surface area of charcoal gives it a lot of bonding.
The process of making charcoal affects which compounds it is better at absorbing.
Ultraviolet radiation makes certain micro
Sterile organisms (and harmless).
Some air purifiers have ultraviolet rays, which bathe in the air when the air passes through, eliminating the potential hazards of bacteria and viruses in the air.
These are sometimes called air purifiers.
In the home, these filters are often part of a heating or cooling system.
Install the filter housing between the return duct and the furnace.
The cartridge slides into this housing, so all the air flowing into the furnace is filtered out.
This can not only remove contaminants in the air, but also prevent damage to the stove from the accumulation of dust and dirtup.
The filter can also be placed in the air outlets in each room of the house.
Typical materials include foam, cotton, fiberglass or synthetic fibers.
To some extent, the density of the filter material is limited--
The very dense filter has a smaller gap and can capture very small particles.
The Fold filter works best because the surface area of the capture particles is increased.
However, the filter is able to capture particles smaller than the minimum gap in the filter material.
Air filters can be expensive and you have to replace them to keep them working (
Some filters are washable).
They also limit the airflow through the system, resulting in a decrease in overall efficiency. HEPA (
High Efficiency Particulate Air)
The filter meets the DOE standard for removing particles from the air.
As long as the filter meets this standard, it can consist of any material-
Penetration is less than 0.
03% particles 0.
Size or larger [3 microns]source].
The filter must also allow a specific amount of air to flow through, depending on the size of the filter. The ULPA (Ultra-
Low penetration Air)
The standards are stricter.
In addition to the air of household cleaning allergens and dust particles that they are familiar with, the nuclear power industry uses advanced HEPA filters.
These air purifiers use a method called discharge to produce charged molecules called ions.
Most atoms in the air have neutral charges. -
They have the same number of negative-
Electronic with positive electricityCharged proton
The corona discharge is a small and intense electric field.
The molecule that passes through it will get an extra electron, give the molecule a negative charge, or it may get knocked down by an electron and give it a positive charge.
Larger particles in the air, such as dust or other contaminants, are more likely to be ionised because they create larger targets for electrons when discharged through the corona.
Once the particle is charged, it will be attracted to anything with the opposite charge.
Charging two metal plates in the purifier (
1 Negative, 1 positive)
Attract these particles.
In addition, if the particles in the air have opposite charges, they attract each other.
When particles gather together, they become heavier and eventually they settle down from the air.
The ozone generator works much like an ionization purifier, but it is designed to change the oxygen molecule and convert it into ozone, a molecule consisting of three oxygen atoms.
Oxygen in the atmosphere exists in the form of dioxygen, which is a molecule consisting of two oxygen atoms.
When these molecules are exposed to corona discharge or ultraviolet rays, some dioxic molecules split into separate oxygen atoms (free oxygen).
Some atoms form ozone when most of the oxygen is regrouped into dioxygen.
The manufacturers of these devices claim that ozone will deodorant and disinfect the air.
Many also claim that the presence of ozone has other health benefits.
There is strong evidence, however, that ozone does not achieve air purification.
Ozone is also known as a toxic gas.
It\'s not a very stable molecule. -
It is easy to react with other chemicals in the air to form new compounds that are more dangerous than ozone itself.
Ozone also oxidized metal, causing corrosion.
The same process of producing ozone also produces nitrogen oxides, resulting in further reactions with compounds in the air and ozone itself.
Many purifiers use adsorption materials to treat odors, smoke and chemicals in the air. Adsorption (not absorption)
It is a process in which a substance is trapped on the surface of another substance.
The most common adsorption agent is activated carbon, which has great porosity and has many microscopic \"corners and gaps\" to capture the molecules passing through.
The larger particles just stay in many pores of charcoal.
Static electricity attracts some substances into pores.
Some substances react and combine with charcoal.
The high surface area of charcoal gives it a lot of bonding.
The process of making charcoal affects which compounds it is better at absorbing.
Ultraviolet radiation makes certain micro
Sterile organisms (and harmless).
Some air purifiers have ultraviolet rays, which bathe in the air when the air passes through, eliminating the potential hazards of bacteria and viruses in the air.
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