Air purifier manufacturer to introduce the principle and function of household air purifier

The role of household air purifiers

The haze consists of three air pollutants -- sulfur dioxide, nitrogen oxides and particulate matter -- that combine with fog to make the sky gray in an instant. The tiny, inhalable particles in the air are known as PM Matter, and are particularly known as PM10 and PM2.5. PM2.5 is the main culprit of haze weather, and it mainly comes from daily power generation, industrial production, automobile exhaust emission and other processes. PM2.5 refers to particles less than 2.5 microns in diameter (i.e. less than 1/20 of the thickness of a human hair). PM2.5 particles are small in size and contain a large number of toxic and harmful substances. They stay in the air for a long time and spread far, which can have serious impacts on human health.

The air purifier that we buy will be placed in corner commonly, the purify range of common air purifier is in diameter of 2 meters or so commonly, that is to say, the air of other place in big space is likely won't be cleaned. Experts model under the condition of weightlessness in space air control principle and method of suspended particles, based on the characteristics of the ground air suspended particles and pollutant distribution, special designed a unique waterfall return mode and the wind, greatly expand the effective range of air purification, to enhance the indoor air layer between the appropriate convection disturbance, let every corner of the large space can be circulation purification to air.

Functions of sharp platinum air purifier:

Removal of fine particles: dust, sand, dandruff, pollen is the cause of allergic diseases, eye diseases skin diseases.

Get rid of germs: mites affect people's skin health. Respiratory diseases are caused by harmful fungi such as aphids.

Harmful bacteria: influenza viruses, molds, air conditioners contain bacteria that cause high fever, diarrhea, pneumonia and other diseases.

Harmful waste gas: vehicle, industry, cigarette is to give people the main reason such as headache, acerbity soft feeling, vertigo.

Chemicals: formaldehyde, benzene, ammonia, sulfur, carbon monoxide and other harmful chemicals are the main causes of cancer.

Deodorization: deodorization of human body, life, industry, chemistry, pet and other odors.

Air purifier manufacturers concluded that in the face of haze weather, choosing an effective and realistic air purifier is especially important for people. The primary criterion to verify the effectiveness of air purifiers is the purification capacity (i.e., purification efficiency) of PM2.5, and the effective range of air purifiers is also the focus that people need to pay attention to.

The purification of air purifier should be divided into three categories according to its working principle:

The first category: passive purification (filter purification)

The main principle is: air is pumped into the machine by the fan, and air is filtered through the built-in filter net. The main function is to filter dust, odor, poisonous gas and kill some bacteria. The filters are: dust collection, formaldehyde removal, deodorization and HEPA. The relatively high cost is the HEPA filter, which can decompose toxic gases and sterilize, especially to inhibit secondary pollution.

The characteristics of this kind of products are that the function of the fan and the quality of the filter net determine the purification effect. The placement of the machine and indoor layout affect the completeness of the purification. The indoor purification effect is uneven and difficult to be complete.

The second major category: active purification (no filter type)

According to the active sterilization principle of these products can be divided into silver ion technology, negative ion technology, low temperature plasma technology, photocatalyst technology and net ion group ion technology.

First generation, silver ion purification technology. In simple terms, it means to ionize silver blocks and blow them into the air for sterilization. However, the products have high cost, low killing rate of bacteria and almost no killing characteristics of viruses.

Second generation, negative ion technology. The main principle is to use static electricity to release negative ions, adsorb the dust in the concentrated air to play the role of dust removal. Meanwhile, negative ions also ionize the oxygen in the air to form ozone and kill bacteria to a certain extent. This kind of product has the advantage of low production cost.

Third generation, low temperature plasma technology. The main principle is that the gas is broken through by applying voltage to the discharge voltage of the gas, generating a variety of strong oxidizing low-temperature plasma, and decomposing the pollutants in contact in a very short time. This kind of technology is generally used for industrial waste gas treatment, and secondary pollution is generated after chemical reaction. To be applied to household air purifier, human safety test and corresponding secondary pollution treatment technology are required.

Fourth generation photocatalyst technology. Photocatalyst actually USES semiconductor to release strong oxidizing free radical under the irradiation of light. The advantage of this technology is that the product cost is low, but the disadvantage is that the free radical activity leads to the shorter time in the air, and the killing effect on virus and bacteria is also limited.

Fifth generation, net ion group technology. In 2000, a company applied for global patent technology. It's a technique that directly ionizes the water molecules in the air into H radicals and OH radicals, and then encases the water molecules. OH radicals kill more viruses and bacteria than ozone and stay in the air longer than ozone. The net ion group ionic technology allows OH radicals to be coated with a layer of water molecules, which can maintain their presence in the air for a long time. At the same time, the hydrophilic properties of bacteria and viruses can be utilized to kill bacteria and viruses more quickly. This technology is currently internationally recognized as a medical space purification technology, and is also currently capable of killing over 99% of the a/H1N1, H1N5 avian influenza and SARS.

The third category: double purification (active purification + passive purification)

(1) (strainer + net ion group technology); (2) (filter + negative ion technology); (3) (filter + negative ion technology).

In general, physical purification is the most common and effective method. For example, dust, pollen, allergens, viruses and other large particles can be filtered by the HEPA technology in the way of physical purification. The harmful substances such as benzene, toluene, formaldehyde and other odors can be purified by adsorption of activated carbon in physical purification. The passive purification method can only purify the air inhaled. Active purify means can have purify effect to whole space. Active and passive composite purification is a combination of the two, and the effect is better.

There are many different technologies and media in the air purifier, which enables it to provide clean and safe air to users. Common air purification technologies include: low temperature asymmetric plasma air purification technology, adsorption technology, negative ion technology, negative oxygen ion technology, molecular complexation technology, photocatalyst technology, HEPA efficient filtration technology, electrostatic dust collection technology, active oxygen technology, etc. The material technology mainly includes: photocatalyst, activated carbon, synthetic fiber, HEAP efficient material, negative ion generator, etc. At present, the existing air purifier in the domestic market is more composite, that is, a variety of purification technologies and materials medium are adopted at the same time.

Entering the 1980s, the emphasis on the principles of air purifier has turned to air purification methods, such as household air purifier. Past filter in removing the stench in the air, toxic chemicals and poisonous gas is very good, but cannot remove mould spore, the virus or bacteria, and the new family and office use air purification machine, not only can clean the toxic gases in the air, also can purify air, remove the bacteria, viruses in the air, dust, pollen, mold spores, etc.

Nowadays, the principle of air purifier has been designed and made in many different ways, and each technological change brings remarkable effect to the improvement of indoor air quality. And all these purposes only one: hope can purify indoor air to improve people's quality of life.

At present, most of the air purifiers in the market mainly consist of: chassis, filter section, air duct design, motor, power supply, LCD screen, etc. The life is decided by the motor, the purification efficiency is determined by the filter section, and the quiet is decided by the air duct design, housing, filter section, motor.