The structure and principle of air purifier.portable air purifier price

　　The structure and principle of air purifier

　　Air purifiers are usually composed of high-voltage generating circuit negative ion generators, micro-fans, air filters and other systems. The working principle of the air purifier is as follows: the micro-fan (also known as the ventilator) in the machine circulates the indoor air, and the polluted air passes through the air filter (filtered twice) in the machine to remove or adsorb various pollutants. Then it passes through the negative ion generator installed in the air outlet (the high voltage in the negative ion generator generates DC negative high voltage during operation), which continuously ionizes the air to produce a large number of negative ions, which are sent out by the micro fan to form a negative ion air flow to achieve the purpose of cleaning and purifying the air.

　　The structure of air purifier

　　The shape of the air purifier is mainly the case shell, filter section, air duct design, motor, power supply, LCD screen and so on. It is the motor that determines the lifespan, the filter section determines the purification performance, and the air duct design, the case shell, the filter section, and the motor determine whether it is quiet.

　　The air purifier is mainly composed of a motor, a fan, an air filter, and an intelligent monitoring system. Some models of the home air purifiers are equipped with a humidifying water tank or auxiliary purification devices, such as negative ion generators, high-voltage circuits, etc. The air filter is the core component. Other purification devices actually only play an auxiliary function, so the quality of the air filter is the most critical factor that directly affects the effect of the portable air purifier.

　　The principle of air purifier is mainly divided into three categories

　　At present, the mini air purifiers on the market can only remove dust, oily smoke and odor; slightly better ones can kill bacteria and viruses; high-level purifiers can eliminate formaldehyde, TVOC and other chemical pollution caused by decoration. In order to better understand the current air purifiers on the market, we first classify the working principles of air purifiers.

　　Although the names, types, and functions of air purifiers on the market are not the same. But going back to the source, from the working principle of air purifiers, there are three main types: passive purification (filter purification), active purification (no filter) and double purification (active purification + passive purification).

　　The first category: passive purification (filter purification)

　　The main principle of the passive air purifier is: the air is drawn into the machine with a fan, and the air is filtered through the built-in filter, which can filter dust, odor, toxic gas and kill some bacteria. The filter is divided into: dust collection filter, formaldehyde removal filter, deodorization filter, HEPA filter and so on. Among them, the higher cost is the HEPA filter, which has a very obvious effect on filtering particulates, and can decompose toxic gases and sterilize, and can inhibit secondary air pollution.

　　The quality of the fan and filter of this kind of product determines the air purification effect, and the location of the machine and the indoor layout will also affect the purification effect.

　　The second category: active purification (no filter type)

　　The fundamental difference between the principle of an active air purifier and the principle of passive air purification is that the active air purifier gets rid of the restrictions of the fan and filter, instead of passively waiting for the indoor air to be drawn into the purifier for filtering and purification. Instead, it effectively and actively releases purification and sterilization factors into the air, and through the characteristic of air diffusion, it reaches all corners of the room to purify the air without dead ends.

　　At present, the technologies for purifying and sterilizing factors on the market mainly include silver ion technology, negative ion technology, low temperature plasma technology, photocatalyst technology and plasmacluster ion technology.

　　The third category: double purification (active purification + passive purification) This kind of purifier actually combines passive purification technology with active purification technology.

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