Air purifier based on dielectric barrier discharge and titanium dioxide catalysis

Abstract

The invention discloses an air purifier based on dielectric barrier discharge and titanium dioxide catalysis. The air purifier comprises an outer frame, a plurality of dielectric barrier discharge tubes, at least one isolation board and a filter screen. The side wall of the lower end of the outer frame is provided with an air inlet, and the side wall of the upper end of the outer frame is providedwith an air outlet. The dielectric barrier discharge tubes are cylinders composed of high-voltage electrodes, dielectric layers and grounding electrodes arranged coaxially from the inside to the outside. Discharge cavities are formed between the dielectric layers and the grounding electrodes. The outer surfaces of the dielectric layers are plated with titanium dioxide catalyst layers. The isolation boards are fixed to the inner side wall of the outer frame and provided with a plurality of holes. The dielectric barrier discharge tubes can be inserted into the holes. The number of holes is thesame as that of the dielectric barrier discharge tubes. The isolation boards are evenly arranged in the outer frame. The filter screen is arranged on the air inlet. The air purifier is simple in structure and low in cost, and does not have the problem of secondary pollution caused by excessive adsorption.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to an air purifier in which dielectric barrier discharge and titanium dioxide catalysis cooperate. Background technique [0002] There are many types of air purifiers on the market. At present, the technologies used in air purifiers include activated carbon technology, HEPA technology, high-voltage electrostatic technology and so on. [0003] Activated carbon technology uses the adsorption properties of the porous structure of activated carbon to absorb suspended particles in the air. However, activated carbon cannot adsorb all VOCs, and there are also problems such as adsorption saturation. [0004] HEPA is a high-efficiency air filter. Using a HEPA-compliant filter element can effectively filter PM2.5, but it cannot filter VOCs in the air. At the same time, the HEPA filter cannot be cleaned and can only be replaced regularly, so the use of a large-area HEPA filter will ...

AI Technical Summary

Problems solved by technology

However, the photocatalytic purification method has low purification efficiency and limited capacity, and it is difficult to support the purification function of the device alone.

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