The emergence of air cleaners has given us a glimpse of hope that they can eliminate pollution from the air, such as dust, odor, etc., which is now a very good product. Since there are many air cleaners on the market, first it is important to understand the air cleaners, which are briefly described below。
1 classification of air cleaners principles - passive purification categories (filtration)
The main principle is that air is pumped into machines by wind machines and filtered through built-in filters, which can be used primarily to filter dust, aroma, toxic gases and the elimination of selected bacteria. The filter is divided into dust filters, go to formaldehyde filters, deodorant filters, hepa filters, etc. The higher cost is the hepa filter, which can decompose toxic gases and microbicides, especially inhibit secondary pollution。
These products are characterized by the clean-up effect of wind engine functions and filter quality decisions, whether the placement of machines and indoor layout effects are complete, uneven and difficult to complete, and higher costs of net replacement。
Classification of air cleaners principles - active purification category (no filter type)
Based on the active fungicide principles of these products, they can be divided into silver ion technology, negative ion technology, cryogenic plasma technology, photo-media technology and net ion mass ion technology。
First generation, silver ion purification technology. In short, the ionization of silver blocks into the air has a microbicide effect, with high cost of defective products, low bacterial extinction rates and virtually no extinction properties for viruses。
Second generation, negative ion technology. The main principle is the application of electrostatic discharges of negative ion, where adsorption of dust in concentrated air acts as a abatement, while the ion also acts as an ionizing ozone to oxygen in air and has a certain effect on bacteria, with the advantage of lower production costs。
Third generation, cryogenic plasma technology. The main principle is that the gas is pierced by voltage to gas discharge voltage, which produces a variety of oxidizing cryogenic plasmas and decomposes exposed contaminants in a very short period of time. This technology is generally used for industrial exhaust gas treatment, resulting in secondary contamination following chemical reactions, and human safety tests and corresponding secondary pollution treatment techniques are required for application in domestic air purification units。
Fourth generation, light media. Photo-transmitters are in fact technologies that use semiconductors to release a free base of strong oxidation in light. The advantage of this technology is that the cost of the product is low, the disadvantage is that the free-base activity leads to a shorter stay in the air and has limited effects on viruses and bacteria。
Fifth generation, netion cluster technology. Sharp 2000 global patent technology. It is a technique for the direct ionizing of water molecules in the air into a free base of h and oh, together with the packaging of water molecules. Oh free bases kill viruses and bacteria more than ozone and stay in air longer than ozone. The net ion mass ion technology allows the oh to bind a layer of water molecule outside the free base to maintain its presence in the air, while taking advantage of the watering nature of bacteria and viruses, allowing faster operational operations against bacteria and viruses. This technology is currently internationally recognized for medical space purification and is currently the only one capable of dealing with avian influenza a, h1n1, h1n5, with a sars extinction rate above 99 per cent。
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