A high-efficiency photogenerated negative ion purification module with a scattering surface

A technology for purifying modules and scattering surfaces, applied in household appliances, heating methods, lighting and heating equipment, etc., can solve the problems of inability to irradiate the photocatalyst, affecting air circulation, and large air resistance of the filter screen, achieving good UV irradiation effect and improving The effect of low irradiation intensity and air resistance

Active Publication Date: 2019-03-29
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] There is no report about the photogenerated negative ion data in the above modules in the prior art

Method used

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  • A high-efficiency photogenerated negative ion purification module with a scattering surface
  • A high-efficiency photogenerated negative ion purification module with a scattering surface
  • A high-efficiency photogenerated negative ion purification module with a 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 for coating the photocatalyst, and the photocatalyst coating is coated with a thickness of about 100 m, in which the weight percentage of the photocatalyst is 85%. The fin support is made of plexiglass PMMA, and the thin slits with a width of 0.5mm are cut by laser cutting technology, and the spacing of the slits is 0.5cm. Cut out the corresponding fine slits on the PMMA board on the upper and lower parts of the fin holder, so that the fins coated with photocatalyst can be inserted vertically into the slits from top to bottom to be fixed. The preparation of the photocatalyst module 2 is achieved through the above steps.

[0035] In a fin holder with a height of 30cm, a width of 17cm, and a thickness of 5.0cm, there are 31 photocatalyst fins, the fin spacing is 0.5cm, and the total contact area of ​​the fin photocatalyst and air is 9300cm 2 . A UV-B ultraviolet lamp 3 ...

Embodiment 2

[0042] On the basis of the first embodiment, an aluminum foil or aluminum 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 0-1.0 cm -1 . Corresponding to the fin array of 30cm×17cm×5cm, the axis of the scattering surface and the axis of the ultraviolet lamp tube are on the same horizontal plane, the two are parallel and the distance D1 is 0-15cm. The scattering surface of the ultraviolet photon faces all directions. In order to concentrate the scattered ultraviolet rays on the photocatalyst fin, the scattering surface itself has a certain size and curvature, and its relative position with the ultraviolet lamp tube needs to be optimized. Generally, The next two are parallel to each other and maintain a certain distance.

[0043] In the specific production, the aluminum sheet that meets the above requirements is used as the...

Embodiment 3

[0050] In a transparent airtight container with a volume of 1m×1m×1m, put the photocatalyst module used in Examples 1 and 2, in which the fin support is 30cm high, 17cm wide, and 5.0cm thick. 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 of ​​the fin photocatalyst and air is 9300cm 2 . Two UV-B ultraviolet lamps with a power of 7W are installed horizontally 0.5cm in front of the fin array. Behind each lamp is installed a length of 25cm, a width of 6.0cm, a thickness of 0.3mm, and a curvature of 0.3mm. 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.

[0051] Use a needle tube to inject a small amount of formaldehyde solution into a w...

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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 light-generated 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. Photo-generated holes have the second oxidizing properties among known substances. They can oxidize volatile organic compounds (VOCs) in the air to water and carbon dioxide through photochemical reactions. Therefore, the titanium dioxide photocatalyst technology is considered to be the most effective method for purifying...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F3/16
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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