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How do home air filter works

Views:2     Author:Site Editor     Publish Time: 2020-09-18      Origin:Site

    The prototype of the air filter is a respiratory protection device used by people to protect the breath.

    According to records, as early as the first century in Rome, people used hemp masks for protection when they purified mercury. After a long time, air filters have also made progress, but they are mainly used as breathing air coolers, used in some dangerous industries such as the production of hazardous chemicals.

    In 1827, Brown discovered the law of motion of tiny particles, and people have a better understanding of the mechanism of air filtration.

    The rapid development of air filters is closely related to the development of the military industry and the electronics industry.

During the First World War, due to the use of various chemical toxicants in air filters, military gas masks with asbestos fiber filter paper as the smoke filter layer came into being. Glass fiber filtration

    The medium used for air filtration was patented in the United States in October 1940.


    In the 1950s, the United States conducted in-depth research on the production process of glass fiber filter paper, which improved and developed the RFILTER air filter. The HEPA filter came out in the 1960s, and in the 1970s, the HEPA filter using fine glass fiber filter paper as the filter medium has a filtration efficiency of 99.9998% for particles with a particle size of 01 3 microns.

    Since the 1980s, with the emergence of new test methods, the improvement of use evaluation and the improvement of the requirements for filtration performance, it has been found that HEPA filters have serious problems, so they have higher performance ULPA filter. At present, countries are still working hard to study and estimate that more advanced air filters will appear soon.

    The design of the filter itself has also made significant progress, the most important of which is the removal of partitions, that is, the development of filters without partitions.

    The partitionless filter not only eliminates the danger of the partition plate damaging the filter medium, but also effectively increases the filtering area, improves the filtering efficiency, and reduces the airflow resistance, thereby reducing energy consumption. In addition, the air filter has made great progress in high temperature resistance, lame resistance, waterproof, and anti-fluorescence to meet some special needs.


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