At present, there are not many air body purifiers in our country, but they should be necessary. Air body pollution is serious, and indoor decoration will have some residual gas, which is harmful to our health. In today’s society, air body purifiers are also becoming popular. /[/k0
Air body purifier is a must for our society nowadays, indoor activities are getting more and more. Some people like indoor sports very much, indoor pollution is also a lot, such as toilet pollution, decoration pollution, need to use air body purifier to purify.
1. filter PM2.5
PM2.5 is mainly filtered by HEPA (High Efficiency than Air Filter), which means High Efficiency Air Body Filter in Chinese. HEPA filter consists of a stack of sub-glass fiber membrane folded continuously before and after, forming a corrugated gasket for placing and supporting the filter boundary. It has the characteristics of strong particle capture ability, small pore size, high adsorption capacity, high purification efficiency and good water absorption, with a purification rate of 99.97% for 0.3 micron particles. In other words, only 3 out of every 10,000 particles can penetrate the HEPA filter membrane, which is internationally recognized as the best high-efficiency filter material. Originally used for nuclear energy research and protection, HEPA is widely used in precision laboratories, pharmaceuticals, atomic research and surgical procedures where high cleanliness is required. 2.
2. Removal of odors and volatile organic compounds VOC
1) Cold catalyst filtration
Cold catalyst is a new type of air gas purification material, which can carry out catalytic reaction at room temperature, decompose various harmful malodorous gases into harmless and odorless substances at room temperature and pressure, change from simple physical adsorption to chemical adsorption, decompose at the same time of adsorption, remove formaldehyde, benzene, xylene, toluene, TVOC and other harmful gases, generate water and carbon dioxide. In the catalytic reaction process, the cold catalyst itself does not directly participate in the reaction.
2) Activated carbon filtration
Activated carbon has better aerodynamic properties such as small bulk density, large surface area, high adsorption efficiency, small wind resistance and long service life. Its principle is that it can contact the surrounding air body to a large extent and passively adsorb pollutants into its own pores. Therefore, the larger the surface area of activated carbon and the more developed the pore structure, the stronger the adsorption capacity. Theoretical research proves that the larger the molecular weight of harmful substances, the more easily they are absorbed.
3.Antibacterial and sterilization
[/s2/] mainly through the nano-silver antibacterial network to play antibacterial and bactericidal effect, its main principle is: [/s2/]
1) Contact reaction
More than 99% of harmful bacteria are unicellular; however, unicellular bacteria must rely on the oxidation of oxygen metabolizing enzymes in order to breathe; the oxidation process of oxygen metabolizing enzymes is the process of taking away an electron from a neutral particle. When the nano-silver particles are close to bacteria, due to Coulombic gravity, the nano-silver particles will adsorb on the surface of bacteria and enter the interior of bacteria; bacterial oxygen metabolizing enzyme will take away one electron from the nano-silver particles, thus turning the nano-silver particles into positively charged silver ions; the positively charged silver ions react with the negatively charged sulfhydryl groups in bacterial protease, and due to the loss of sulfhydryl groups, the protease rapidly loses its activity, which leads to bacteria being Killed without dividing and reproducing. When the bacteria lose activity, silver ions will be released from the bacteria, and the bactericidal activity will be repeated, so its antibacterial effect will last for a long time.
2) Photocatalytic reaction
Silver can play the role of catalytic active center under the action of light, activating oxygen in water and air bodies, generating hydroxyl radicals (. 0h) and reactive oxygen ions (O2+). Reactive oxygen ions have a strong oxidation capacity, can destroy the ability of bacteria to proliferate in a short period of time, leading to cell death.
4. Negative ions
In nature, plant photosynthesis, waterfalls, lightning can produce negative ions in the air body, people compare the negative ions in the air body as “vitamins in the air body”. Negative ions mainly through the strong electrostatic field ionization in the air body molecules, and the air body of oxygen molecules combined to form negative oxygen ions. At the same time, negative ions in the air body and germ cells combined, resulting in changes in the internal structure of cells and death. And formaldehyde, toluene, soot and other inhaled particles in the air body are gathered and naturally settled, thus achieving the purpose of purification. Super ability to continuously provide negative oxygen ions, effectively activate the oxygen molecules in the air body, so that the air body around you is energized and more easily absorbed by the human body, which is beneficial to human health.
IV. Why the air body needs purification
1. Upper respiratory tract infection
Air has a lot of particles, dust, pollutants, viruses, etc. floating in the air. Once inhaled by the body, it will stimulate and destroy the respiratory mucous membrane, dry out the nasal cavity and destroy the defense ability of the respiratory mucous membrane. Bacteria enter the respiratory tract and easily cause upper respiratory tract infections.
2. Bronchial asthma
Air pollution levels are heavier than usual, and the empty air often carries bacteria and viruses, which can easily lead to the spread of infectious diseases and the occurrence of various diseases. In particular, air urban air pollutants are not easily diffused, intensifying the toxicity of sulfur dioxide, carbon monoxide, nitrogen oxides and other substances that will seriously threaten people’s lives and health. Empty dust and smog float in the air, and dust mites may also be suspended in the fog. Bronchial asthma patients inhaling these allergens will stimulate the respiratory tract, resulting in coughing, shortness of breath, breathlessness and other asthma symptoms.
3. Infant rickets
The Environmental Research Institute of the Chinese Center for Disease Control and Prevention conducted a one-year study on the effects of haze on human health and found that hazy weather not only leads to increased incidence/admission of respiratory diseases, but also has some indirect effects on human health. Haze attenuates ultraviolet radiation. If haze occurs frequently, it can affect human vitamin D synthesis, leading to a high incidence of rickets in children and enhancing the activity of infectious bacteria in the air.
V. Product selection
There are many optional air body purifier analogues on the market, ranging from a few hundred dollars to several thousand dollars. Generally speaking, the current technology is mature, cost-effective filtered air body purifier in the selection of several aspects need to pay attention to.
1.more comprehensive function: in addition to filtering PM2.5, can also remove odors and volatile organic compounds, antibacterial sterilization, release high concentrations of negative ions, purification effect will be better
2. Purification indicators: usually, the removal rate of PM2.5 is 99%, odor, formaldehyde, toluene, an average of 97% or more, the release of negative ion concentration of 10 million. If through the relevant technical certification, is a better machine.
3. Air body quality detection sensor: This instrument is a high-precision instrument. At present, it is the most ideal one produced by General Motors (GE), with sensitive detection and high precision.
4. The choice of filters: imported filters are relatively good, but the price is more expensive, and the difference in effect is not too big. Because the filter is a consumable, need to be replaced regularly, the choice does not need to import all.
5. purification area selection: according to their office and home area to choose the appropriate purifier. Usually the larger the purification area, the more expensive it is to choose the right one.
The function of air body purifier is shown in many aspects. It is necessary to install the air body purifier in your own home, especially the newly renovated house. Some residual formaldehyde in the room will exist for many years, which is very bad for our health and may lead to miscarriage for pregnant women. Everyone should pay attention to the air body we usually breathe and let ourselves live in.
