Large-area corona plasma air purifier

Abstract

The invention belongs to the technical field of environment governance, and particularly discloses a large-area corona plasma air purifier. The large-area corona plasma air purifier comprises panel-type corona electrodes, dust collection electrodes and light sources, wherein the panel-type corona electrodes and the dust collection electrodes are arranged alternately at intervals; the surface of each panel-type corona electrode is parallel to and faces to the surface of the corresponding dust collection electrode; and the light sources are external light sources, and can emit high-intensity light beams which are projected in a plasma discharging area and a plasma wake flow passing-by area. The air purifier disclosed by the invention have the large-area corona electrodes, so that a large-size corona discharging area can be generated; on the premise that plasma power is not lowered, the discharging intensity of the corona area is lowered; low-power density inhibits generation of ozone and nitric oxides, so that contradiction between plasma air purification efficiency and exceeding of nitric oxide concentration is well solved; and besides, the panel-type corona electrodes can generate the large-size corona, so that plasma air purification and industrial waste gas treatment efficiency is favorably improved.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to a large-area corona plasma air purifier. Background technique [0002] Plasma air purification technology integrates multiple functions such as sterilization, dust removal, decomposition of formaldehyde and TVOC, and has broad application prospects in many fields. However, when the plasma is generated by discharge in the air, the by-products of ozone and nitrogen oxides are unavoidable, which severely restricts the use of plasma technology in the field of indoor air purification. If humans or animals stay in an environment with excessive ozone and nitrogen oxides for a long time, it may cause discomfort in the body. Studies have also shown that plants growing in an environment with long-term ozone concentrations exceeding the standard will also lead to reduced production. In order to avoid the concentration of ozone or nitrogen oxides exceeding the st...

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Problems solved by technology

[0003] In terms of plasma industrial waste gas treatment, the plasma power is relatively large. Although it is not sensitive to ozone and nitrogen oxide indicators, the traditional asymmetric electrode structure discharge device, such as needle plate electrode structure, wire plate or strip plate structure, is strong. The discharge area is mainly concentrated in a small space at the needle tip, around the line or at the edge of the belt, which is the main reaction area, and more weak discharge areas have weak reactivity, resulting in low energy efficiency ratio of plasma treatment of industrial waste gas. This is also a key factor restricting the wide application of plasma industrial waste gas treatment technology

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