Air purifier and air purifying method

Abstract

The embodiment of the invention discloses an air purifier which comprises an air exhaust device, an energy charging cavity and a dust removal cavity; the energy charging cavity communicates with the dust removal cavity; a gas inlet is formed in the energy charging cavity; a gas outlet is formed in the dust removal cavity; the air exhaust device communicates with the gas outlet; the air exhaust device is used for exhausting air in the dust removal cavity; an ultrasonic head, which is used for charging kinetic energy to dust in air in the energy charging cavity, is arranged in the energy charging cavity; at least two first electrodes which are separately used for adsorbing dust in air in the dust removal cavity are arranged in the dust removal cavity; and electrical properties of the at least two first electrodes are different. The embodiment of the invention further discloses an air purifying method which comprises the following steps of: applying ultrasonic waves to dust in to-be-purified air for charging kinetic energy to dust; and applying voltage to dust with kinetic energy, and adsorbing the dust onto the first electrodes. With the adoption of the embodiment of the invention, an air purifying rate is high, and secondary pollution is not caused.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of air purifiers, in particular to an air purifier and an air purifying method. Background technique [0002] Air purifiers are products that can absorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, decoration pollution such as formaldehyde, bacteria, allergens, etc.), and effectively improve air cleanliness . [0003] According to air purifiers for the removal of particulate matter in the air, there are mainly mechanical filtration, high-voltage electrostatic dust collection, etc. [0004] Mechanical filtration generally captures dust through the following four methods: direct interception, inertial collision, Brownian diffusion mechanism, and screening effect. The four methods all use filter screens, and the filter screens can only capture dust with a small diameter, but the dust removal effect on larger particles of dust (such as PM1...

AI Technical Summary

Problems solved by technology

All four methods use filter screens, and the filter screens can only capture dust with a small diameter, but the dust removal effect on larger particles of dust (such as PM10) is poor, the air purification rate is low, and the dust removal time is long, about 1h

Although the wind resistance of high-voltage electrostatic dust collection is small, the effect of collecting larger particles and fibers is poor, the air purification rate is low, and the dust removal time is long, about 4-5min

Electrode cleaning is troublesome and time-consuming, and requires an external voltage of tens of thousands of volts, which is prone to generate ozone and cause secondary pollution

Images