What is the working principle of air purifier?

The working principle of air purifier is to purify the air through physical adsorption, chemical reaction and light wave radiation.

Air purifier is usually composed of high voltage generating circuit, negative ion generator, micro fan, air filter and other systems. Working principles should be divided into three categories.

Passive purification-air is pumped into the machine by the fan and filtered through the built-in filter screen, which can mainly filter dust, odor, toxic gas and kill some bacteria.

Active purification-the principle of active sterilization can be divided into silver ion technology, which ionizes silver blocks and blows them into the air to achieve sterilization effect. Negative ion technology uses static electricity to release negative ions and absorb dust in concentrated air to achieve the purpose of dust reduction. Low-temperature plasma technology is to strike the gas by applying voltage to the discharge voltage of the gas, produce various kinds of strong oxidizing low-temperature plasma, and decompose the exposed pollutants in a very short time. Photocatalyst technology is the technology of using semiconductor to release strong oxidizing free radicals under the irradiation of light and the technology of cleaning ion groups, which directly ionizes water molecules in the air into H free radicals and o H free radicals, and at the same time encapsulates the water molecules.

Double purification-filter screen+clean ion group technology, filter screen+negative ion technology