Method for dynamically capturing PM2.5 and bacteria by magnetically controlling magnetic sterilization of porous medium

By using a magnetically controlled, suspended, oscillating dynamic collection device that eliminates porous media, combining magnetization and centrifugal force, PM2.5 is efficiently collected and pathogens are thoroughly eliminated. This solves the problem that existing technologies cannot simultaneously purify and eliminate pathogens, reduces energy consumption and noise, and features high efficiency and low cost.

CN117870053BActive Publication Date: 2026-08-18NORTHEASTERN UNIV CHINA +1
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Patent Information

Application Number
CN202410142070.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-01-31
Publication Date
2026-08-18
Estimated Expiration
2044-01-31

AI Technical Summary

Technical Problem

Existing air purification methods cannot simultaneously and efficiently capture PM2.5 and disinfect the viruses and bacteria attached to it, and there is a problem of bacteria and viruses breeding, leading to secondary pollution and increased noise.

Method used

A magnetically controlled porous media for disinfection is used. Through the suspension and oscillation of magnetization force and centrifugal force, a sandwich-structured magnetic disinfection porous granular filter material is prepared. Combined with ultraviolet light strips, it can achieve dynamic capture of PM2.5 and bacteria.

Benefits of technology

It improves the purification efficiency of PM2.5 and the ability to disinfect germs, reduces air resistance and noise, and features low energy consumption and high processing capacity. The filter media can be recycled to prevent the growth of germs.

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Abstract

A method for dynamically capturing PM2.5 and bacteria by using magnetically controlled magnetic sterilization porous medium, a sandwich structure medium with magnetic, porous and sterilization functions is prepared by using a magnetically controlled pulse electrodeposition method. The magnetic sterilization porous particles are used as filter materials in a dynamic capture device, the filter materials are controlled by the magnetization force generated by the electromagnet and the centrifugal force generated by the channel rotation, the magnetic field strength and the rotation speed are changed, the magnetic sterilization porous particles achieve dynamic balance and oscillate along the force direction; in the inlet direction, the filter materials are controlled by the drag force of the airflow and the gravity, and are suspended in the channel; the suspended and oscillated magnetic sterilization porous particle filter materials dynamically capture PM2.5 and sterilize the bacteria attached to PM2.5. The centrifugal force and the magnetization force cooperatively control the suspended and oscillated filter materials to improve the meeting probability with the pollutants in the air, the filter materials have the characteristics of smaller filtration resistance, higher efficiency, sterilization function, low noise, large air processing amount per unit time and low energy consumption.
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