Air purifier development.Home air purifier Factory

　　In 1823, John and Charles Dean invented a new type of smoke guard that allowed firefighters to keep the smoke out of the fire. [5]

　　In 1854, a man named Johns Tenhouse made new progress on the basis of his predecessor's invention: After several attempts, he learned that adding charcoal to an air filter could filter out harmful and toxic gases from the air. .

　　During World War II, the U.S. government began researching radioactive materials. They needed to develop a way to filter out all the harmful particles to keep the air clean so scientists could breathe, so the HEPA filter came into being.

　　In the 1950s and 1960s, HEPA filters were very popular. HEPA is a filtration standard, that is, for 0.3-micron particles, it has a filtration efficiency of more than 99.97%, which requires a single filtration efficiency. In air purifiers, filters that meet HEPA standards are too high to apply.

　　In the 1980s, the focus of air purification has shifted to air purification methods such as home air purifiers. Filters of the past are very good at removing bad odors, toxic chemicals and toxic gases from the air, but not mold spores, viruses or bacteria, while new home and office air purifiers do more than just clean the air of toxic gases It can also purify the air and remove bacteria, viruses, dust, pollen, mold spores, etc. in the air.

　　Since the late 1990s, with the increasing demand for sterilization and deodorization, there has been an "antibacterial fever" in the field of air purifiers. In 1996, the air purifier also adopted a photocatalyst filter element to improve the sterilization and deodorization performance.

　　After 2002, affected by the spread of SARS and the epidemic of new influenza, people's demand for air purifiers to fight viruses has increased. Developed and equipped air purifiers with "Streamer Energy" technology. This technology air purifier uses a decomposing (oxidizing) filter element to capture bacteria and viruses.

　　In 2008, in addition to the countermeasures to remove harmful substances in the air, in order to meet the needs of eliminating room drying, the air purifier added a "humidification function".

　　As of 2013, the vast majority of air purifiers on the market, especially those below 10,000 yuan, have particle filters that cannot be called "HEPA".

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