As more and more air purifier products are used, the types of purifiers produced by various manufacturers are also increasing, and the purifying effects of air purifiers are also different.
As a new type of household appliances, air purifiers have been paid more and more attention by people. The improvement of living standards also enables people to improve the air quality in the active area. However, due to the rapid development of the industry and the emission of automobile exhaust gas, people's environment is becoming worse and worse. Air pollution has made it unfeasible to rely on natural ventilation to improve indoor air quality. In this case, the appearance of air purifiers and purifiers satisfies people's demands for fresh air.
Air Purifier Purification Principle
Air purifiers include single-unit, non-powered, and air-conditioning types. The single-unit air conditioners are small air purifiers with built-in fans that we can see on the market, and have only a single air purification function; Installed in the central air-conditioning duct, it is usually used for purification and filtration at the inlet or return air of the central air-conditioning system. The air-conditioning purifier installs the purification module in a cabinet-type or wall-mounted air conditioner, so that it not only has the function of adjusting temperature and humidity. And can achieve the effect of purifying indoor air. When the air purifier purifies the indoor air, the air in the room is continuously passed through the air purifier through its own fan or external fan. When the dirty air passes through the purification module, it passes through the HEPA activated carbon network, high efficiency removal of formaldehyde, photocatalyst and other technologies, gradually The toxic gases and particulates in the air are removed, and the last clean air is sent out through the air outlet.
Air purifiers can be classified into high-efficiency addition of formaldehyde, activated carbon, nano-photocatalyst sterilization, and negative ion release of active oxygen according to the purification technology. Air purifiers can be generally classified into single-technology type and composite technology type. From the market point of view, the composite technology type The dominant position, but in actual use, due to the different manufacturers of the production design and process technology, resulting in different purification effect, not necessarily the effect of the composite purifier is higher than a single technical product
Photocatalytic technology is mainly applied to nanomaterials. Its principle is to let certain wavelengths of light shine on a kind of composite nanomaterial, which can stimulate a kind of high-energy particles that are completely harmless to the human body. It has a strong redox ability. Can directly decompose airborne bacteria, viruses, formaldehyde, benzene, sulfur dioxide and other pollutants into non-toxic and odorless substances, thus purifying the air. Currently, there are many types of purifiers using nano-photocatalyst technology on the market. Nano-photocatalyst technology is widely used not only in air-purifiers, but also in composite purification products.
The purification efficiency of purifiers produced by different technologies is significantly different, and the purification efficiency of purifiers of the same technology is also different. According to statistics, currently the compound technology occupies a considerable proportion in the purifier market, indicating that most manufacturers believe that the composite technology has a higher purification efficiency and a better price/performance ratio.
The high removal rate of single components of formaldehyde does not mean that the removal efficiency of various indoor air pollutants is high, and various technologies have different characteristics for the removal of different pollutants. By comparing the formaldehyde purification efficiency of the purifier, it is possible to obtain The basic conclusion is that for air purifier products, we cannot judge the level of purifying effect from the type of technology alone. We must adopt scientific testing methods to obtain the actual purification efficiency of specific products.
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