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Filter screen, preparation method thereof, air conditioner indoor unit and air purifier with filter screen

An air purifier and air conditioner indoor unit technology, applied in the field of materials, can solve the problems of unclean processing, small spread area of ​​meltblown cloth, large resistance, etc.

Inactive Publication Date: 2021-04-09
HISENSE (GUANGDONG) AIR CONDITIONER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(1) The filter screen filled with activated carbon particles mostly uses columnar activated carbon particles, which use the porous structure of activated carbon and a large surface area to adsorb harmful gases such as formaldehyde, but there are disadvantages such as low purification efficiency, large resistance, fast adsorption saturation, and easy desorption.
Under certain effects, such as filling, transportation, handling, etc., it is easy to be damaged and produce powder pollution such as activated carbon powder.
It does not have the function of removing particulate matter. If it is stacked with a discounted filter element for particulate matter, the thickness of the composite filter will be greatly increased, which will affect the structural design of the product. In addition, activated carbon is prone to moisture, which can breed bacteria and produce odors
(2) The carbon cloth filter is sprayed with activated carbon fine particles between the particle removal filter material (such as polypropylene melt-blown non-woven fabric, etc.) and the support material (such as PET non-woven fabric, etc.), and then discounted and injected However, there are disadvantages such as large resistance, poor adsorption to formaldehyde, easy desorption, and secondary pollution.
In addition, the main problem of carbon cloth is that when improving efficiency and life, it is necessary to increase the weight, and the resistance is relatively large. Due to the large thickness, the expansion area of ​​the melt blown cloth is small, the dust holding capacity is reduced, and the processing process is not clean. The processing environment is generally poor
(3) The photocatalyst filter uses nano-titanium dioxide as a catalyst. When there is no ultraviolet light, the decomposition of formaldehyde is not complete, and the purification efficiency is low. If it is used with ultraviolet lamps, it is easy to generate ozone pollution and cause secondary damage to the human body.

Method used

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  • Filter screen, preparation method thereof, air conditioner indoor unit and air purifier with filter screen
  • Filter screen, preparation method thereof, air conditioner indoor unit and air purifier with filter screen
  • Filter screen, preparation method thereof, air conditioner indoor unit and air purifier with filter screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] raw material:

[0063] (1) The polymer fiber raw material is polyethylene terephthalate (PET);

[0064] (2) Aldehyde removal particles have a median particle size of D 50 =50nm nano manganese dioxide.

[0065] a) Melt and plasticize the dried polyethylene terephthalate (PET) fiber raw material in a screw extruder, then spray it out from the spinneret hole, and form a PET melt under the traction of the melt-blown airflow fiber.

[0066] b) The nano-manganese dioxide is blown onto the surface of the polymer fiber solution along with the blowing airflow, and the fiber with aldehyde-removing particles loaded on the surface is obtained after cooling. The temperature of the airflow is 240°C, the flow rate of the airflow is 400m / s, and the injection amount of the aldehyde-removing particles is 30mg / s.

[0067] c) The polymer fibers prepared in step b fall on the web-forming curtain and bond with each other to form the formaldehyde-removing filter cloth loaded with aldehyde...

Embodiment 2

[0070] The difference from Scheme 1 is that the aldehyde removal particles have a median particle size of D 50 =200nm nano manganese dioxide.

[0071] Detect according to the method of embodiment 1: the formaldehyde clean air volume of the formaldehyde-removing filter screen with a thickness of 10mm after pleating is 90m 3 / h, the formaldehyde clean air volume of the formaldehyde removal filter with a thickness of 15mm after pleating is 130m 3 / h.

Embodiment 3

[0073] raw material:

[0074] (1) The polymer fiber raw material is polyethylene terephthalate (PET);

[0075] (2) Aldehyde removal particles have a median particle size of D 50 100nm tea polyphenols.

[0076] a) Melt and plasticize the dried polyethylene terephthalate (PET) fiber raw material in a screw extruder, then spray it out from the spinneret hole, and form a PET melt under the traction of the melt-blown airflow fiber.

[0077] b) The tea polyphenol is blown onto the surface of the polymer fiber solution along with the blowing airflow, and after cooling, the fiber with aldehyde-removing particles loaded on the surface is obtained. Wherein, the air temperature is 200° C., the air flow velocity is 450 m / s, and the injection amount of the aldehyde-removing particles is 60 mg / s.

[0078] c) The polymer fibers prepared in step b fall on the web-forming curtain and bond with each other to form the formaldehyde-removing filter cloth loaded with aldehyde-removing particles...

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Abstract

The invention provides a filter screen, a preparation method thereof and an air conditioner indoor unit and an air purifier with the filter screen. The filter screen comprises formaldehyde removal filter cloth and a frame used for fixing the formaldehyde removal filter cloth, wherein the formaldehyde removal filter cloth comprises polymer fibers and formaldehyde removal particles loaded on the polymer fibers, and the formaldehyde removal particles are supported on the polymer fibers by a melt-blown jet during preparation of the polymer fibers. Therefore, the formaldehyde removal filter cloth has the advantages of simple and efficient preparation method and low cost; the formaldehyde removal function is achieved, the formaldehyde removal particles loaded on the formaldehyde removal filter cloth are not prone to falling off, and dust pollution can be avoided; the formaldehyde removal efficiency is high; the wind resistance is low; and the filter screen has excellent flexibility, can be conveniently made into filters with various shapes, and is suitable for various forms of air treatment equipment, such as air conditioner indoor units and air purifiers.

Description

technical field [0001] The invention belongs to the field of materials, in particular, the invention relates to a filter net and a preparation method thereof, and an air-conditioning indoor unit and an air purifier having the same. Background technique [0002] In the indoor space where people work and live, the air not only contains a large amount of particulate matter, such as dust, smoke, powder, etc., but also has many gaseous volatile organic pollutants, such as nitrogen oxides, ozone, formaldehyde, toluene, xylene Wait. Among them, formaldehyde is the main pollutant of indoor air pollution caused by decoration and furniture. It has the characteristics of slow release and persistent pollution. It is determined by the World Health Organization as a carcinogenic and teratogenic substance, which can cause nasopharyngeal cancer and leukemia. According to the survey, the concentration of formaldehyde in most of the rooms exceeds the hygienic standard, especially in newly de...

Claims

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Application Information

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IPC IPC(8): B01D39/08B01D46/00B01D53/72B01D53/81B01D53/86F24F1/0073F24F3/16
CPCB01D39/08B01D46/0001B01D46/0027B01D53/72B01D53/81B01D53/8668F24F1/0073B01D2255/20707B01D2257/704B01D2259/4508
Inventor 卢杰宏周宇明李云蹊杨文宇
Owner HISENSE (GUANGDONG) AIR CONDITIONER
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