Air purifier and control method

Abstract

The invention provides an air purifier and a control method. The air purifier comprises a shell, wherein the shell is provided with an air duct; a filter screen and a disinfection device are arranged in the air duct; the disinfection device comprises a high-voltage electrode, a dielectric plate and a grounding electrode which are sequentially stacked, and mutually communicated through holes are formed in the high-voltage electrode, the dielectric plate and the grounding electrode respectively; the high-voltage electrode is externally connected with high voltage, and the grounding electrode is grounded; when a low voltage is applied to the high-voltage electrode, the disinfection device weakly ionizes air flowing through the through hole, and generated positive and negative electrons charge particles in the air, so that the filtering range of the filter screen is expanded; and when a high voltage is applied to the high-voltage electrode, the disinfection device strongly ionizes air flowing through the through hole, and generated plasma disinfects the air flowing through the through hole and the surface of the filter screen. The structure is simple, the filtering effect of the filter screen is improved under the condition that the resistance of the filter screen is not increased, and the air treatment capacity of the air purifier is improved; and the problem of secondary air pollution caused by bacteria breeding on the surface of the filter screen is solved.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to an air purifier and a control method. Background technique [0002] In the existing air purifiers, the high-efficiency filter screen can effectively intercept the microorganisms such as particulate matter and bacteria in the air; however, the high-efficiency filter screen only intercepts the bacteria but does not disinfect them. After a long time of use, the surface of the high-efficiency filter screen will breed a large number of Bacteria, and then cause secondary pollution of the air; plasma plays an important role in the fields of disinfection, material processing and environmental protection; someone proposed a purifier, a disinfection part is set at the air outlet end of the filter, and the external air passes through the air inlet The gas channel entering the disinfection section first passes through the filter screen, in which impurities are filtered out, and then p...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an air purifier and a control method to solve the problems in the prior art that the air purifier has a complex structure, does not fully integrate the disinfection function and the filtering function, and has poor air purification effect and low efficiency.

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