CN212214966U

CN212214966U - Air purifier filter element

Info

Publication number: CN212214966U
Application number: CN202020531364.3U
Authority: CN
Inventors: 俞书宏; 管庆方; 凌张弛; 韩子盟; 杨怀斌; 杨昆鹏; 尹崇翰
Original assignee: University of Science and Technology of China USTC
Current assignee: University of Science and Technology of China USTC
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-12-25
Anticipated expiration: 2030-04-10

Abstract

The utility model relates to an air filtration field to an air purifier filter core is disclosed, include the supporting layer that stacks gradually from inside to outside, activated carbon layer, nano cellulose filter layer, the compound sterilization layer of silver-colored nano fiber, photocatalyst fiber composite bed, micron cellulose filter layer, and its shape is sinusoidal function shape. The photocatalyst fiber composite layer can efficiently remove formaldehyde, the nano-cellulose filter layer and the micro-cellulose filter layer can efficiently filter granular pollutants in air at two stages, and the silver nano-fiber composite sterilization layer can efficiently kill various pathogens in air. The utility model discloses a filter core has the filtration efficiency height, can exterminate multiple pathogen in the air, and the high efficiency removes formaldehyde, and long service life uses the characteristics that the energy consumption is low, can effectively improve the room air quality, reduces the propagation of disease, protection user's health.

Description

Air purifier filter element

Technical Field

The utility model relates to an air filtration field, in particular to air purifier filter core.

Background

With the improvement of industrialization degree, air pollution is more and more serious. Meanwhile, indoor air quality is gradually attracting attention. There are generally three main categories of indoor air pollutants: solid particulates, gaseous contaminants, and microorganisms. Solid particulate matter is generally referred to as PM 2.5; the gaseous pollutants mainly comprise formaldehyde, benzene, toluene, other organic small molecular compounds, sulfide, ammonia gas, ozone and the like; the microorganisms are mainly bacteria, fungi, some small protists and viruses.

The air purifier can adsorb, decompose or convert various air pollutants (generally including PM2.5, dust, pollen, peculiar smell, decoration pollution such as formaldehyde, bacteria, allergen and the like). Wherein, PM2.5, microorganism mainly rely on HEPA filter screen to filter, and gaseous pollutant mainly relies on the charcoal board to filter.

The filter core of air purifier is the core of filtering type air purification device, and the product of present higher end is HEPA. The filter screen reaching the HEPA standard has an effective rate of 99.7% for blocking particles with a particle size of more than 0.3 μm, but the particles cover the surface of the filter screen after a certain time limit to block pores in the filter screen, so that the ventilation quantity is reduced easily, even the ventilation cannot be realized, and if the air pollution is serious in a space, the failure of HEPA is aggravated. In order to ensure the purification effect, the filter element needs to be replaced regularly. The filter gaps of the filter component are arranged too densely, the filter effect is good, but the problems of high power consumption, high noise, inconvenient maintenance and the like of the purifier caused by large resistance and low capacity of air circulation are solved, so that the pathogens such as bacteria, viruses, mold, dust mites and the like in the air are difficult to kill well, the formaldehyde in the air is removed, and the air is not ensured to be fresh and healthy. Therefore, the air purifier filter element with high-efficiency filtration, high-efficiency sterilization, high-efficiency formaldehyde removal and long service life is particularly needed.

SUMMERY OF THE UTILITY MODEL

In order to overcome life weak point among the prior art, purifying effect is low, and sterilization ability is poor, removes the not good problem of formaldehyde effect, the utility model provides an air purifier filter core can also exterminate pathogens such as bacterium, virus, mould and dust mite in the air when keeping efficient filtration efficiency, effectively improves the indoor air quality, reduces the propagation of disease, can also the efficient formaldehyde in the deaerate, the health of protection user. The filter element also has the characteristics of long service life and low energy consumption.

The utility model provides a technical scheme that its technical problem adopted is: the filter element of the air purifier comprises a mesh-shaped supporting layer, and an active carbon layer, a nano-cellulose filtering layer, a silver nano-fiber composite sterilization layer, a photocatalyst fiber composite layer and a micron cellulose filtering layer which are sequentially stacked on the mesh-shaped supporting layer.

Furthermore, the nano-cellulose filter layer is composed of plant nano-cellulose with the diameter of 4-100 nanometers, the pore size distribution is 50-300 nanometers, and the layer thickness is 0.5-5 millimeters.

Furthermore, the activated carbon layer is formed by coating activated carbon particles with 200-500 meshes between the nano-cellulose filter layer and the reticular support layer, and the thickness of the layer is 0.5-5 mm.

Further, the silver nanofiber composite sterilization layer is prepared by compounding plant nanocellulose with the diameter of 4-100 nanometers and silver nanoparticles, and the thickness of the layer is 0.5-5 millimeters. Furthermore, the silver nanoparticles have the particle size of 1-100 nanometers and are uniformly distributed in a network structure formed by interweaving the nanocellulose.

Furthermore, the photocatalyst fiber composite layer is prepared by compounding a nano-scale titanium dioxide photocatalyst and plant nano-cellulose with the diameter of 4-100 nanometers, and the thickness of the layer is 0.5-5 millimeters. Furthermore, the particle size of the nano-scale titanium dioxide photocatalyst particles is 1-100 nanometers, and the nano-scale titanium dioxide photocatalyst particles are uniformly distributed in a network formed by interweaving the nano-cellulose.

Furthermore, the micron cellulose filter layer is composed of plant micron cellulose with the diameter of 1-10 microns, the pore size distribution is 0.5-20 microns, and the layer thickness is 0.5-5 mm.

Furthermore, the reticular support layer is woven by a metal mesh and is pressed with the filter layer.

Further, the filter element is bent into a sine function shape.

The beneficial effects of the utility model are that, the utility model discloses a nanometer titanium dioxide photocatalyst granule in the photocatalyst fiber composite bed of air purifier filter core can be under the illumination through harmful gas such as formaldehyde in the chemical reaction decomposition air, air-purifying. The nano-cellulose filter layer and the micro-cellulose filter layer are made of natural green plant fibers, are green and environment-friendly, can efficiently filter pollution particles in air at two levels, particularly PM2.5, and simultaneously reduce air resistance and energy consumption. The silver nanoparticles uniformly distributed in the nano cellulose network in the silver nano fiber composite sterilization layer can continuously release high-concentration silver ions, can effectively kill pathogens such as bacteria, viruses, molds, dust mites and the like in the air, improves the air quality, prolongs the service life of the filter element, and protects the health of a user. The activated carbon layer can further remove peculiar smell in the air through physical adsorption, and the air is refreshed. The shape of the filter accords with the sine function, so that the filter area can be further increased, the filter effect is improved, and the filter resistance is reduced.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is the utility model discloses a schematic structure for air purifier filter core, wherein show in the figure: 1. the device comprises a micron cellulose filter layer, a photocatalyst fiber composite layer, a silver nanofiber composite sterilization layer, a nano cellulose filter layer, an active carbon layer, a mesh support layer and a photocatalyst fiber composite sterilization layer, wherein the silver nanofiber composite sterilization layer is 3, and the nano cellulose filter layer is 4.

Detailed Description

In order to clarify the objects, technical solutions and advantages of the present invention more clearly, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in figure 1, the utility model provides an air purifier filter element, include netted supporting layer 6 and stack gradually active carbon layer 5 on the netted supporting layer, nanocellulose filter layer 4, silver nanofiber composite sterilization layer 3, photocatalyst fiber composite bed 2, micron cellulose filter layer 1. The net-shaped supporting layer 5 is formed by weaving a metal net, and the activated carbon layer 5, the nano-cellulose filtering layer 4, the silver nano-fiber composite sterilization layer 3, the photocatalyst fiber composite layer 2, the micro-cellulose filtering layer 1 and the net-shaped supporting layer 6 are pressed together.

In the embodiment, the micron cellulose filtering fiber layer is composed of natural green plant micron fibers with the diameters of 1-10 microns, the pore size distribution is large, particles in air can be pre-filtered, good air permeability is kept, the pre-filtering effect is achieved, a subsequent filtering layer is prevented from being blocked, and the service life of the filtering material is prolonged.

The photocatalyst fiber composite layer is prepared by compounding nanometer plant fibers and photocatalyst nano particles, and can remove harmful gases such as formaldehyde in the air through spontaneous chemical reaction under illumination.

The silver nano-fiber composite sterilization layer is prepared by compounding nano plant fibers and silver nano particles, the silver nano particles capable of killing bacteria are uniformly distributed in a network structure with pore size distribution of 50-300 nanometers interwoven by nano cellulose, and silver ions with high concentration are continuously released, so that the effect of efficiently killing pathogens such as bacteria, viruses, molds, dust mites and the like in the air is achieved.

The nano-cellulose filter layer is made of natural green plant nano-fibers, the fiber diameter is 4-100 nanometers, the pore size distribution is 50-300 nanometers, micro-particles in air and pathogens such as bacteria and viruses can be filtered, and particularly, the nano-cellulose filter layer has a good filtering effect on PM 2.5.

The activated carbon layer is formed by coating activated carbon particles with 200-500 meshes between the nano-cellulose filter layer and the reticular support layer, so that peculiar smell in air can be further removed, and the air can be refreshed.

The filter element is bent into a sine function shape, so that the filtering area is increased, the filtering efficiency can be improved, the resistance is reduced, and the energy consumption is reduced.

To sum up, the utility model discloses an air cleaner filter core can also kill pathogens such as bacterium, virus, mould and the dust mite in the air when keeping efficient filtration efficiency, effectively improves the indoor air quality, reduces the propagation of disease, can also the efficient formaldehyde in the deaerate, the health of protection user. The filter element also has the characteristics of long service life and low energy consumption. Compared with the traditional product, the product is safer, more environment-friendly, more efficient and has good market prospect.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air purifier filter element, its characterized in that: the air purifier filter element comprises a support layer (6), and an active carbon layer (5), a nano-cellulose filter layer (4), a silver nano-fiber composite sterilization layer (3), a photocatalyst fiber composite layer (2) and a micro-cellulose filter layer (1) which are sequentially stacked on the support layer (6),

wherein the micro-cellulose filtration layer (1) is a layer formed of plant micro-fibers having a diameter of 1 to 10 micrometers, has a micro-scale pore structure, and has a pore size distribution of 0.5 to 20 micrometers,

the photocatalyst fiber composite layer (2) is a layer formed by compounding a nanometer titanium dioxide photocatalyst and plant nano-cellulose with the diameter of 4-100 nanometers, and nanometer titanium dioxide particles are uniformly distributed in a network structure formed by interweaving the plant nano-fibers, the pore diameter distribution of the network structure is 50-300 nanometers,

the silver nanofiber composite sterilization layer (3) is a layer formed by compounding silver nanoparticles and plant nanofibers with diameters of 4-100 nanometers, and the silver nanoparticles are uniformly distributed in a network structure with pore size distribution of 50-300 nanometers, wherein the network structure is formed by interweaving the nanocellulose;

the nano-cellulose filter layer (4) is made of plant fibers with the diameter of 4-100 nanometers, has a network structure with nano-pores, and has the pore size distribution of 50-300 nanometers;

the activated carbon layer (5) is uniformly arranged between the nano-cellulose filtering layer and the reticular supporting layer by activated carbon particles with 200-500 meshes.

2. The air cleaner filter element according to claim 1 wherein the thickness of the micro-cellulose filter layer (1) is 0.5-5 mm.

3. The air cleaner filter element according to claim 1, wherein the photocatalyst fiber composite layer (2) has a thickness of 0.5 to 5 mm.

4. The air cleaner filter element of claim 1, wherein the nano-sized titanium dioxide particles have a particle size of 1-100 nanometers.

5. The air cleaner filter element according to claim 1, wherein the silver nanofiber composite sterilizing layer (3) has a thickness of 0.5-5 mm.

6. The air cleaner filter element of claim 1, wherein the silver nanoparticles have a particle size of 1-100 nanometers.

7. The air cleaner filter element according to claim 1, wherein the thickness of the nano-cellulose filter layer (4) is 0.5-5 mm.

8. The air cleaner filter element of claim 1, wherein the shape is a sine function shape.