Working principle of commercial air purifiers

As people pay more attention to air hygiene, air purifiers have been widely used in commercial places, public facilities, hospitals and other environments. Its main function is to effectively purify the air and eliminate harmful substances, bacteria and viruses in the air. Understanding the working principle of commercial air purifiers can help us better use this technology to improve air quality.

1. Physical filtration

Commercial air purifiers usually first use physical filtration to remove large particles in the air, such as dust, pollen and hair. High-efficiency air filters (HEPA) are the most common filtration method. This filter can capture at least 99.97% of particles with a diameter of ≥0.3 microns, thereby significantly improving air quality.

2. Chemical disinfection

After physical filtration, many commercial air purifiers will further use chemical disinfection to eliminate bacteria and viruses in the air. Commonly used chemical disinfectants include ozone and volatile organic compounds (VOCs). By releasing ozone, bacteria and viruses can be killed, and odors can also be removed from the air. However, since ozone may cause harm to human health at high concentrations, special attention should be paid to its concentration control when using it.

3. Ultraviolet disinfection

Ultraviolet (UV) disinfection technology is another common means of air disinfection. Ultraviolet lamps can emit ultraviolet rays in the UVC band and have extremely strong bactericidal ability. By passing the air through the ultraviolet irradiation area, the DNA and RNA structures of bacteria, viruses and other microorganisms will be destroyed, thereby achieving the effect of disinfection. Many high-end commercial air purifiers and sterilizers will combine physical filtration and ultraviolet disinfection technology to achieve a more comprehensive air purification effect.

4. Photocatalytic technology

Photocatalytic technology is a new type of air disinfection method. It uses photocatalysts (usually titanium dioxide) to react with moisture and oxygen in the air under ultraviolet light to decompose organic matter and pollutants, while destroying viruses and bacteria. The advantage of this method is its durability and effectiveness, which can continuously reduce harmful substances in the air.

5. Ion generator

Some commercial air purifiers and sterilizers are also equipped with ion generators, which can release negative ions. Negative ions will combine with positive ions in the air to achieve the effect of sedimentation and air purification. At the same time, negative ions can also improve the freshness of the air and help improve human comfort.

Commercial air purifiers and disinfectors combine a variety of technical means to achieve efficient removal and disinfection of harmful substances in the air. These devices can not only improve air quality and protect people's health, but also reduce the risk of infectious diseases to a certain extent. When choosing a commercial air purifier and disinfector, users should consider its function, efficiency and safety according to specific environmental needs in order to choose the most suitable product.