High-efficiency photo-generated negative ion purification module with scattering surface

A technology for purifying modules and scattering surfaces, used in home appliances, home heating, lighting and heating equipment, etc., can solve the problems of inability to irradiate photocatalysts, affect air circulation, and large air resistance of filters, achieve simple and intuitive application functions, improve The effect of low irradiation intensity and air resistance

Active Publication Date: 2016-11-23
苏州容电储能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the photocatalyst modules that have appeared in recent years, titanium dioxide is generally coated in honeycomb ceramics or filter screens. This method easily leads to the following disadvantages: (1) Ultraviolet light cannot irradiate the photocatalyst located inside the honeycomb ceramics or filter screens; (2) filter The wind resistance of the network is relatively large, which affects the circulation of the air, requiring a larger power fan and higher energy consumption
[0004] In the prior art, there is no report about the photogenerated negative ion data in the above modules

Method used

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  • High-efficiency photo-generated negative ion purification module with scattering surface
  • High-efficiency photo-generated negative ion purification module with scattering surface
  • High-efficiency photo-generated negative ion purification module with scattering surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An aluminum sheet with a length of 30 cm, a width of 5.0 cm, and a thickness of 0.2 mm is used as the fin of the coated photocatalyst, and a photocatalyst coating with a thickness of about 100 μm is applied, wherein the weight percentage of the photocatalyst is 85%. Use plexiglass PMMA to make the fin bracket, use laser cutting technology to cut out slits with a width of 0.5mm, and the spacing of the slits is 0.5cm. Slits corresponding to each other are cut out on the PMMA plates at the upper and lower parts of the fin support, so that the fins coated with photocatalyst can be vertically inserted into the slits from top to bottom to be fixed. The preparation of the photocatalyst module 2 is realized through the above steps.

[0035] In the fin bracket with a height of 30cm, a width of 17cm, and a thickness of 5.0cm, there are 31 photocatalyst fins with a pitch of 0.5cm, and the total contact area between the fin photocatalyst and the air is 9300cm 2 . A UV-B ultraviol...

Embodiment 2

[0042] On the basis of Example 1, an aluminum foil or sheet with an aluminum purity greater than 95% and a surface roughness of 40-0.03 μm is used as the light scattering component 4 . The curvature of the scattering surface of the light scattering component 4 is 0-1.0cm -1 . Corresponding to the fin array of 30cm×17cm×5cm, the axis of the scattering surface and the axis of the ultraviolet lamp are on the same horizontal plane, they are parallel and the distance D1 is 0-15cm. The scattering surface of ultraviolet photons is oriented in all directions. In order to gather the scattered ultraviolet rays on the photocatalyst fins, the scattering surface itself has a certain size and curvature, and its relative position with the ultraviolet lamp needs to be optimized. Generally, The two are parallel to each other and keep a certain distance.

[0043] In the specific production, use the aluminum sheet that meets the above requirements as the ultraviolet scattering surface, first u...

Embodiment 3

[0051] In a transparent airtight container with a volume of 1m * 1m * 1m, put into the used photocatalyst module in the embodiment one and two, wherein the fin support is 30cm high, wide and 17cm, thick and 5.0cm, the support is equipped with 31 photocatalyst fins, the weight percentage of titanium dioxide in the photocatalyst coating on the fins is 20%, the distance between adjacent fins is 0.5cm, and the total contact area between the fin photocatalyst and air is 9300 cm 2 . Two UV-B ultraviolet lamps with a power of 7W are installed horizontally at 0.5cm in front of the fin array, and each lamp is equipped with a length of 25cm, a width of 6.0cm, a thickness of 0.3mm, and a curvature of 0.01cm -1 , The scattering surface with a roughness of 20µm, the scattering surface and the central axis of the corresponding lamp tube are on the same water surface, and the distance between the two is 3.0cm, and the scattering surface is in a suspended state.

[0052] Use a needle tube t...

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Abstract

The invention provides a high-efficiency photo-generated negative ion purification module with a scattering surface. The negative ion purification module comprises a shell with air inlets and air outlets in the two sides, a photocatalyst module, an ultraviolet lamp assembly and a light scattering assembly are arranged in the shell; a fan is arranged on the other side of the photocatalyst module; the ultraviolet lamp assembly is arranged between the light scattering assembly and the photocatalyst module; the light scattering assembly is curved and has a rough scattering surface, the roughness of the scattering surface is 40-0.03 Mum, the curvature of the scattering surface is 0-1.0cm<-1>; The photocatalyst module comprises a support and fins arranged in the support; the fins are arranged on the support in an array manner; flow guide slits formed by the fins at intervals are arranged between every two adjacent fins, the fin comprises an aluminum base material sheet body and a coating layer covering the aluminum base material sheet body, and the coating layer contains 5%-95% of titanium dioxide by weight. The module has the following characteristics that the space utilization rate is high, the air resistance is small, the ultraviolet irradiation and scattering effects are good, the concentration of the generated photo-generated negative ions can be up to 5 million/cm3, and the decomposition speed of the formaldehyde molecules is 10<17>-10<23>h. m3.

Description

technical field [0001] The invention relates to a purification module, in particular to a purification module with a scattering surface that can efficiently generate photogenerated negative ions. Background technique [0002] Titanium dioxide photocatalyst is a non-toxic and harmless photocatalyst with important application value. Under the irradiation of ultraviolet light, titanium dioxide can generate photo-generated electrons and photo-generated holes. The photo-generated electrons have strong reducibility and combine with oxygen molecules in the air to form photo-generated negative ions. Such negative ions are beneficial to human health and air purification. Photogenerated holes have the second highest oxidizing properties among known substances, and can oxidize volatile organic compounds (VOCs) in the air into water and carbon dioxide through photochemical reactions. Therefore, titanium dioxide photocatalyst technology is considered to be the most effective way to purif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/00F24F3/16
CPCF24F3/16F24F8/10F24F8/22F24F8/24F24F8/30
Inventor 谢贤宁张顺中林群
Owner 苏州容电储能科技有限公司
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