1, 'HEPA efficient filtration technology' has good filtering performance
HEPA is an internationally recognized best high-performance filter material. The HEPA filter consists of a stack of sub-glass fiber membranes that are continuously folded back and forth (PP, polypropylene material used in air cleaners) to form wavy spacers for placement and placement. Support filter media. The filter efficiency of HEPA high-efficiency particle filter is proportional to its surface area. At present, the HEPA high-efficiency particle filter of HEPA air purification device is multi-layered, and the area after unfolding is increased by more than ten times compared to folding. Ten times, the filter efficiency is very good.
Purification principle: Particle inertia principle and diffusion principle.
HEPA purification technology advantages:
The effect of filtering particles is very obvious! The particles have a strong trapping ability, small pore size, large adsorption capacity, high purification efficiency, and water absorption. The purification rate for particles of 0.3 micron is 99.97%. If it is used to filter cigarette smoke, then The effect of filtration can reach almost 100%. Particles of 2.5μm or more can achieve a filtration efficiency of more than 99% with only F8.
HEPA purification technology disadvantages:
A, China's dust is more serious, and the service life of HEPA may be relatively shortened, which means that HEPA filter needs to be replaced frequently and its use cost is high.
B. At present, the wind speed in the air purification industry is generally not working at the proper wind speed of HEPA. Such high-demanding sites in the clean room guarantee that the purification efficiency of HEPA is around 0.3-0.5 m/s, and the actual wind speed in use is far away. Above this value.
2, 'Electrostatic dust collection technology', no consumables dust
Electrostatic precipitator technology uses the principle of high-voltage electrostatic adsorption to filter contaminants in the air. It is also used as a basic purification technology and is widely used in indoor air purifiers.
Purification principle: The role of high-voltage electric field, particulate matter is adsorbed on the negative plate or the positive plate, different types of charges attract each other.
Electrostatic dust collection technology advantages:
A, Efficient removal of particulate contaminants in the air, such as dust, soot, pollen, cigarette odor, and kitchen fumes.
B. At the same time, it can also effectively adsorb gaseous pollutants in the air and filter out pathogenic micro-organisms in the air.
C, no consumables, cleaning reusable, true environmental protection.
Electrostatic dust collection technology disadvantages:
A, It is easy to produce ozone, and it is only effective for large particle gas such as particles, mainly used for dust removal, but it has almost no effect on the chemical pollution caused by decoration and removal of formaldehyde, benzene series, TVOC, etc., which is equivalent to junior high efficiency filter.
B. The essence of purification is also physical purification. The harmful substances are not chemically decomposed.
3, 'activated carbon adsorption technology', strong adsorption capacity
Activated carbon is divided into three kinds of coconut shells, shells and coal, the absorption capacity of coconut shells is the strongest.
Purification principle: activated carbon porous structure, large specific surface area, can adsorb small particles.
The advantages of activated carbon: It has a purifying effect on all air pollutants. It has a strong adsorption capacity and can effectively adsorb harmful substances (such as dust, particles, free molecules, bacteria, etc.) in indoor air.
Disadvantages of activated carbon: Activated carbon is just a physical filter. Contaminants are not eliminated. They can only be adsorbed temporarily. With the increase of wind speed and temperature, the adsorbed contaminants may be released. Therefore, the filter material must be replaced frequently to avoid adsorption saturation. .
4, Anion technology, smoke deposition, supplement 'air vitamin'
Through the negative ion generator, a large number of negative ions, also called negative oxygen ions, are produced. They have functions such as calmness, hypnosis, analgesia, increased appetite, and lowering blood pressure. After a thunderstorm, people feel comfortable, that is, the increase in negative ions in the air. It can reduce the active oxygen (oxygen radicals) produced by atmospheric pollutants, nitrogen oxides, cigarettes, etc., and reduce the harmful effects of excessive active oxygen on the human body; Purification.
Purification principle: Positive and negative charge neutralization, and the reduction of negative ions.
Anion advantages:
A. The sedimentation effect of second-hand smoke and other particulate matter is obvious. Therefore, to a certain extent, the smoke smell can be removed. The main reason is that the smoke particles in the air are reduced, and the smoke particles settle to the ground, which is more of physical purification.
B. It has antioxidation, anti-decay, immunity enhancement and self-healing abilities. It can effectively increase blood oxygen carrying capacity by about 20% and effectively promote metabolism of human body to improve sleep. It has a certain effect on sterilization.
Anion disadvantages:
A, The negative oxygen ions in the purification process are mainly 'physical purification', and the pollutants in the air are transferred to the ground.
B, Negative oxygen ions have a very short lifetime in air, so they require sustained release.
C. The purifying effects of formaldehyde, benzene, and other pollutants caused by the decoration are very general, so you need to make a difference.
5, ozone, sterilization and deodorization quickly and thoroughly
Reactive oxygen technology is based on the application of ozone generator, and it is also a kind of basic purification technology. All ion generators can basically release ozone with a certain concentration, and are also widely used in most air purifiers. In the use of ozone sterilization When purifying the purifier, it is necessary to strictly pay attention to whether the ozone production rate meets the national standard (the national ozone concentration of 0.1ppm, the industrial hygiene standard is 0.15ppm as specified by the Ministry of Health). At the same time, the ozone generator must be used to purify the indoor air when the personnel must leave. After the disinfection is completed, the windows are ventilated for more than half an hour.
Purification principle: The strong oxidizing power of ozone can oxidize organic substances, odor molecules, and inactivate the functional structure of oxidizing microorganisms.
Ozone purification advantages:
The inactivation of bacteria by ozone is very rapid, and the thoroughness of sterilization is also beyond doubt. When it is used properly, it is the most environmentally-friendly, most effective and effective purification method recognized internationally. When its concentration reaches a certain value, sterilization can even be completed instantly.
The disadvantages of ozone purification:
Excessive ozone is a serious hazard to human health! High concentrations of ozone can cause sore throat, chest tightness and cough, cause bronchitis and emphysema, cause neurotoxicity, and damage the body's immune function. As ozone is strongly irritating, When people feel uncomfortable, they have long avoided it, so poisoning does not occur during use.
6, 'Photocatalytic catalytic decomposition' UV light can play a role
Photocatalysis technology: It is a kind of technology that utilizes new type of composite nanometer high-tech functional materials, which means photocatalytic reaction.
Photocatalytic purification principle: Under light irradiation, the photocatalyst can use the energy of a specific wavelength light source to generate a catalytic action (redox reaction), so that the surrounding oxygen and water molecules are excited into highly active free radicals. These free radicals are also called 'Light plasma' can decompose almost all organic substances and some inorganic substances that are harmful to the human body or the environment. Photocatalyst (also called photocatalyst) is a type represented by titanium dioxide (TiO2). Under the irradiation of light, it does not change by itself, but it can promote the chemical reaction. The general name of semiconductor material with catalytic function)
Photocatalytic advantages: Photocatalytic technology has a broad spectrum of practical effects, high purification efficiency.
Photocatalytic Disadvantages: Photocatalysts must be exposed to UV light. This means that UV light must be additionally used to emit UV light (wavelengths of 254 nm or 365 nm), but excessive UV light is harmful to humans, so avoid them. The UV lamp is exposed; second, the photocatalyst must be able to contact with UV light, so the environment with many particles, the photocatalyst will be 'hibernate'.