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Multifunctional air purifying device

An air purification device and multi-functional technology, which is applied in the direction of combination device, air quality improvement, gas treatment, etc., can solve the problems of limiting the use effect of air purification equipment, ineffective sterilization and disinfection, and not suitable for purifying formaldehyde, etc., and achieves stability High, small and compact device, high load effect

Active Publication Date: 2017-06-20
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the defects of traditional electrostatic precipitating technology limit its use in air purification equipment
[0003] Electrostatic dust removal technology is accompanied by corona discharge, which will inevitably produce ozone, which has the potential hazard of secondary pollution, and is not suitable for purifying gaseous organic pollutants such as formaldehyde, and the sterilization and disinfection effect is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] at 30m 2 In the room, use a formaldehyde gas pollutant generator to add a certain amount of formaldehyde gaseous pollutant gas into the room, so that the initial concentration of formaldehyde reaches 1.0mg / m 3 ; The initial PM2.5 content in the test room is 0.05mg / m 3 , the initial content of PM10 is 1.0mg / m 3 , there is a certain amount of inhalable particulate matter; at the same time, the initial ozone content of the test is 0.06mg / m 3 , is the safe content.

[0031] There are 5 corona poles in the multifunctional air purification device, the diameter of the hole of the metal plate with holes is 2cm, the length of the emitter is 2cm, the diameter of the fairing cylinder section is 5mm, and the diameter of the cone section is 5mm; the pre-filter is made of glue Made of chemical cotton, the depth is 0.5cm; the graphite conductive layer is used as the electrode layer, and the grid-like plastic plate is used as the gas channel. The electrode layer and the plastic plat...

Embodiment 2

[0034] In the narrow car interior, the initial concentration of formaldehyde is 0.15mg / m 3 , the initial PM2.5 content is 0.10mg / m 3 , the initial content of PM10 is 1.2mg / m 3 , the test ozone initial content is 0.05mg / m 3 , is the safe content.

[0035]There are 10 corona poles of the multifunctional air purification device, the diameter of the hole of the metal plate with holes is 1cm, the length of the emitter is 1cm, the diameter of the fairing cylinder section is 8mm, and the diameter of the cone section is 8mm; the pre-filter is made of glue Made of chemical cotton, the depth is 1.0cm; the graphite conductive layer is used as the electrode layer, and the grid-shaped plastic plate is used as the gas channel. The electrode layer and the plastic plate are arranged alternately. After the electrode layer is passed through high voltage, a parallel strong electric field is formed to collect dust. , the height of the mesh plastic plate is 4 mm; the photocatalyst of graphene a...

Embodiment 3

[0038] at 23m 2 In the room, use a formaldehyde gas pollutant generator to add a certain amount of formaldehyde gaseous pollutant gas into the room, so that the initial concentration of formaldehyde reaches 1.2mg / m 3 ; The initial PM2.5 content in the test room is 0.06mg / m 3 , the initial content of PM10 is 1.2mg / m 3 , there is a certain amount of inhalable particulate matter; at the same time, the initial ozone content of the test is 0.04mg / m 3 , is the safe content.

[0039] There are 5 corona poles in the multifunctional air purification device, the diameter of the hole of the metal plate with holes is 2cm, the length of the emitter is 2cm, the diameter of the fairing cylinder section is 5mm, and the diameter of the cone section is 5mm; the pre-filter is made of glue Made of chemical cotton, the depth is 0.5cm; the graphene conductive layer is used as the electrode layer, and the grid-shaped plastic plate is used as the gas channel. The electrode layer and the plastic pl...

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Abstract

The invention relates to a multifunctional air purifying device. The device comprises a dust particle charging area (4), a prefilter screen (2), a strong parallel electric field dust-collecting part (1) and a photocatalytic decomposition layer (3) which are in sequential arrangement, wherein the dust particle charging area (4) is composed of corona electrodes (5) and a metal plate (8) with pore channels; the strong parallel electric field dust-collecting part (1) is a parallel strong electric field composed of electrode layers (7) and grid plastic plates (6) in alternate permutation distribution; and the photocatalytic decomposition layer (3) is arranged at the rear of the strong parallel electric field dust-collecting part (1). Compared with the prior art, the device provided by the invention is small, exquisite and compact, and has high efficiency of removing dust and bacteria; a graphene aerogel layer has strong adsorption capacity, is easy to functionalize, and can effectively absorb organic pollutants like formaldehyde; meanwhile, graphene aerogel has large pore specific surface area, high photocatalyst loading capacity and higher photocatalyst loading stability in air flow, and also can eliminate ozone generated in the process of electrostatic dust collection.

Description

technical field [0001] The invention relates to an air purification device, in particular to a multifunctional air purification device with graphene airgel loaded with photocatalyst as the photocatalytic decomposition layer. Background technique [0002] Electrostatic dust removal technology is a dust removal method in which gas is ionized in an electrostatic field, meets dust particles, charges the dust particles, and is then adsorbed on the dust collection plate. Its advantages include: (1) The structure of the dust removal device is simple and the cost is low. Low power consumption; (2) The large amount of air negative ions produced can help improve indoor air, making people energetic and less prone to fatigue; (3) It can capture dust particles with a diameter of less than 0.1 μm, and can efficiently remove PM2 in the air. 5 pollution particles. However, the defects of traditional electrostatic precipitating technology limit its application effect in air purification equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D53/86B01D53/72B01D53/66
CPCB01D50/00B01D53/8668B01D53/8675B01D2255/20707B01D2255/2096B01D2255/802B01D2258/06Y02A50/20
Inventor 陈玉洁李华郭益平段华南刘河洲
Owner SHANGHAI JIAO TONG UNIV
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