Air purifying device and air purifying method

Abstract

The invention discloses an air purifying device with simple structure and capable of effectively removing PM2.5 particles in air and other organic pollutants, and an air purifying method. The air purifying device comprises a filter screen and a water supply tank; the water supply tank provides constant-quantity water to the filter screen through capillary water absorbing cloth joined between water and the filter screen by a capillary siphon method; and the size of meshes of the filter screen and the water provided by the capillary water absorbing cloth form water film state matching on the meshes. The cheap and easy-obtained water is used as an air pollutant bearing medium; water films are formed on the meshes of the filter screens; and an absorbing effect in the blasting process of the water films is used for realizing absorption of such organic matters as smaller solid particles (0.01-10 microns), formaldehyde, benzene and ammonia. The air purifying device can totally replace several indoor air purifiers in the prior art, is high in haze removing efficiency, and can be applied to such purifying devices as ventilation, clean dust suckers, industrial cleaning chamber front end filtration, air conditioning fans, air conditioning self-cleaning nets, waste gas treatment and micron-scale micropowder processing and collection.

Description

technical field [0001] The invention relates to an air purifier and a method for purifying air, in particular to an air purifying device capable of removing particulate matter below PM2.5 in the air and a method for purifying air. Background technique [0002] Known indoor air purification technologies are as follows: [0003] 1) Filter type air purification [0004] Use HEPA and other filters to physically isolate solid particles in the air. [0005] Advantages: Intuitive and efficient. [0006] Disadvantages: After the filter screen is clogged, the cleaning efficiency is reduced and secondary pollution is caused. After a certain period of use, the filter screen needs to be replaced, which increases the cost of later use; the absorption capacity of organic pollutants such as formaldehyde is poor, and additional filters such as activated carbon are required to eliminate them. Organic pollutants such as formaldehyde; it is difficult for the filter to isolate solid particle...

AI Technical Summary

Problems solved by technology

[0006] Disadvantages: After the filter screen is clogged, the cleaning efficiency is reduced and secondary pollution is caused. After a certain period of use, the filter screen needs to be replaced, which increases the cost of later use; the absorption capacity of organic pollutants such as formaldehyde is poor, and additional filters such as activated carbon are required to eliminate them. Formaldehyde and other organic pollutants; it is difficult for the filter to isolate solid particles smaller than 0.3 μm, and virus pathological research shows that it is precisely the solid particles smaller than 0.3 μm that have the greatest impact on human health

[0010] Disadvantages: The high-voltage electrostatic field will produce ozone harmful to the human body, and the anode plate needs to be cleaned regularly. Before cleaning, the cleaning performance will decrease with the increase of adherents and cause secondary pollution.

[0014] Disadvantages: The sediment also needs to be cleaned regularly. Before cleaning, the increase of sediment will cause secondary pollution

[0017] Disadvantages of water flow purification device: large water consumption and high noise of water flow, which can easily lead to high humidity in the surrounding environment and low adsorption efficiency

[0018] Disadvantages of squirrel cage purification units: only humidifiers with little air cleaning effect

[0019] Disadvantages of wet curtain type purification device: because it adopts the principle of water surface adsorption, the adsorption efficiency is low

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