Photocatalyst air purification module and air purifier formed thereby

Abstract

The invention provides a photocatalyst air purification module comprising a light source and photocatalyst bearing carriers which are provided with photocatalyst layers. The photocatalyst air purification module is characterized in that the photocatalyst bearing carriers are arranged in a layered mode, spaces among layers are parallel, the photocatalyst bearing carriers among layers are in crossed arrangement; and the light source irradiates the photocatalyst bearing carriers. The invention also provides an air purifier formed by the photocatalyst air purification moudle. The photocatalyst air purification moudle provided by the invention has the advantages of good light illumination efficiency and good air purification effect.

Description

technical field [0001] The invention relates to an air purification module, in particular to a photocatalyst air purification module and an air purification device composed of the same. Background technique [0002] Photocatalyst material is a general term for a class of photocatalytic semiconductors represented by TiO2, which can excite electrons under light irradiation conditions, and the formed electrons and holes react with oxygen and water molecules in the air to form highly oxidizing Hydroxyl free radicals can kill bacteria in the air and degrade organic pollutants to achieve the purpose of purifying the air. The bottleneck of the existing photocatalyst air purification technology lies in the low quantum efficiency of the catalytic reaction, that is, the ratio of the generated effective electrons or holes to the incident photons is low, and there is a defect of low utilization rate of the light source. Improving the quantum efficiency of the photocatalytic reaction is ...

AI Technical Summary

Problems solved by technology

The bottleneck of the existing photocatalyst air purification technology lies in the low quantum efficiency of the catalytic reaction, that is, the ratio of the effective electrons or holes generated to the incident photons is low, and there is a defect of low light source utilization. Improving the quantum efficiency of the photocatalytic reaction is an improvement. The key to photocatalyst air purification technology

In the existing photocatalyst air purification equipment, improving the photocatalyst reaction efficiency and ensuring the air flow are a pair of unsolvable contradictions, and we can only choose one of the two.

At present, in the existing products, the structure of the photocatalyst carrier (the photocatalyst material is loaded on the photocatalyst carrier) usually adopts two layout schemes: perpendicular to the light and parallel to the vertical arrangement: 1. The photocatalyst support adopts the layout perpendicular to the light At this time, the photocatalyst carrier is divided into two types: network structure and sponge structure. Change) It is difficult to ensure the air flow under the effective photocatalyst reaction efficiency. Although the sponge-like structure has a good air purification effect, it cannot make full use of the material; It is a great waste, and the photocatalyst reaction efficiency is low

[0003] Existing studies have shown that the photocatalytic reaction mainly occurs on the surface or near the surface of the photocatalyst material. In the traditional design, the airflow simply passes through the photocatalytic carrier, and it is difficult for the pollutants in the gas to fully contact with the hydrogen and oxygen radicals to be released. purify

In the traditional design, in order to obtain a better air purification effect, the gas flow rate, light energy utilization rate and material utilization rate will be sacrificed, which is far from meeting the environmental protection requirements

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