CN103768871B - There is the function composite air purifying filter core of 3D structure - Google Patents

Abstract

The invention provides a kind of function composite air purifying filter core with 3D structure, described filter core has three-decker, is followed successively by filter course, adsorption layer and stenlizing layer, and the material of employing is respectively non-woven fabrics, active carbon fibre peacekeeping nano-silver nonwoven cloth.Structure function type non-woven fabrics is adopted to have obvious adsorption capacity to suspended particles and PM2.5 particle; NACF is clipped in the middle of two-layer nonwoven, solves the problem that when adopting granular adsorption material, granule easily spills; Non-woven fabrics adds Nano Silver and solves the problem of conventional air purifying filter element without bactericidal effect.Compared with conventional air purifying filter element, what filter core provided by the invention solved that existing air purifying filter core exists slag, non-easy cleaning, does not have the problem of disinfection function, and has that air resistance coefficient is little, purification efficiency is high, sound-absorbing, easy cleaning, has bactericidal action and the little advantage of quality.

Description

Functional composite air purification filter element with 3D structure

technical field

The invention relates to the field of air purification, in particular to a functional composite air purification filter element with a 3D structure.

Background technique

With the rapid economic development, environmental pollution is becoming more and more serious. At present, many cities in our country have experienced large-scale smog weather, which not only brings inconvenience to people's lives, but also seriously affects our health.

People are in the indoor environment most of the time. In order to strengthen the control of indoor air pollution, the use of air purifiers is becoming more and more common. Most of the purification equipment currently on the market can filter the air entering the room, but they do not have the function of sterilization and disinfection, and these products basically use granular adsorption materials to filter the air. Activated carbon particles have a saturated adsorption state, and small activated carbon particles will be blown into the air with the air flow to form pollutants, resulting in the so-called slag phenomenon. For example, the Chinese utility model patent with the authorized announcement number CN2541781Y relates to an air-conditioning air purification net, including an outer mesh skeleton and a filter element covering it, wherein the filter element is covered with a specially treated multi-pleat on the outer mesh skeleton. It is composed of non-woven fabric, and the non-woven fabric is also coated with specially treated activated carbon layer, photocatalytic composite powder and antiviral bactericidal potion. The activated carbon and photocatalytic composite powder are easy to enter the air and cause secondary pollution.

The filter screen of the air purifier is divided into textile fiber filter screen and metal filter screen, etc. The filter screen needs to be cleaned or replaced regularly, and it is more troublesome to clean the metal filter screen. For example, the Chinese utility model patent with application number 200720007593.X involves an air purification net using nano-TiO2 polarized fiber, which consists of an outer frame, a metal mesh layer on the windward side, a metal mesh layer on the windward side, and two polarized fiber mesh layers. One mesh body, it is troublesome to clean up, and cannot be recycled for a long time.

Contents of the invention

In view of the defects in the prior art, the present invention provides a functional composite air purification filter element with a 3D structure, which is composed of special-shaped activated carbon fibers, electrostatic dust-absorbing non-woven fabrics and bactericidal fibers, and has high-efficiency filtration and can be used repeatedly , Sterilization and other characteristics, it overcomes the shortcomings of existing filter elements such as slag dropping, difficulty in cleaning, and secondary pollution.

The present invention provides a functional composite air purification filter element with a 3D structure. The filter element includes a filter screen with a three-layer structure, wherein: the first layer is a filter layer for removing large particle pollutants, and the second layer is for removing small particle pollution. The third layer is an adsorption layer for killing bacteria and viruses, and the adsorption layer is sandwiched between the filter layer and the sterilization layer.

Preferably, the filter layer can adopt sub-micron multi-layer structure non-woven fabric, and has a three-dimensional dust filter structure (3D structure) with a cone-shaped honeycomb mesh, the number of layers can be designed according to environmental conditions, and the method of weaving or lamination is used The pore size gradually decreases from the first layer to the last layer, and the coarse dust and fine dust are filtered out in sequence, so that the filter layer has the characteristics of large dust filtering area, small resistance and large dust holding capacity, and has the ability to reduce part of the noise. Effect. Further, the non-woven fabric can also use a long-lasting electrostatic non-woven fabric with electrostatic dust absorption function, which has super adsorption capacity for charged dust and PM2.5 small particle dust, and is easy to clean and can be used repeatedly .

Preferably, the adsorption layer is made of activated carbon fiber, which is a new generation of high-efficiency active adsorption material and environmental protection material, has faster adsorption and desorption speed and larger adsorption capacity, and is easy to clean.

More preferably, the activated carbon fiber adopts Y-shaped or rice-shaped activated carbon fiber with special-shaped cross-section, which not only increases its adsorption specific surface area, but also has the effect of small damping and sound absorption.

Preferably, the sterilizing layer is made of sterilizing fibers, sterilizing non-woven fabrics or nets woven from optical fibers that transmit ultraviolet rays.

More preferably, the bactericidal fiber is made by adding a bactericide to the spinning slurry, and then spinning into filaments to make fibers.

More preferably, the sterilizing non-woven fabric is made by spraying the bactericide on the non-woven fabric by machine spraying or dipping.

More preferably, the ultraviolet light guide fiber is woven into a net by utilizing the sterilizing effect of ultraviolet light, and then the ultraviolet light is passed through as a sterilizing layer.

Preferably, the bactericide can be nano silver.

Preferably, the filter screen can be sewn and cut into any desired shape according to requirements.

Using the above-mentioned filter element of the present invention, the airflow entering the air purifier or air conditioner first passes through the filter layer to remove large particle pollutants, and reduces the burden on the adsorption layer, and then passes through the adsorption layer to remove small particle pollutants and some toxic gases , and finally enter the room after killing bacteria and viruses through the bactericidal layer, thereby realizing the purification, disinfection and sterilization of indoor air.

Compared with the prior art, the present invention has the following beneficial effects:

The invention can filter and sterilize indoor air with high efficiency, and is easy to wash due to the use of non-woven fabrics; the adsorption material adopts special-shaped activated carbon fibers to solve the problem that granular adsorption materials are easy to leak and cause secondary pollution.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is the structural representation of an embodiment of the present invention;

Fig. 2 is the schematic cross-sectional view of the tapered honeycomb mesh three-dimensional filter layer structure of the present invention;

In the figure: 1 is the filter layer, 2 is the adsorption layer, 3 is the sterilization layer, 4 is the side wall of the three-dimensional filter layer structure, 5 is the bottom of the three-dimensional filter layer structure, and 6 is the activated carbon fiber.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

As shown in Figure 1, this embodiment provides a functional composite air purification filter element with a 3D structure, including a filter screen with a three-layer structure, followed by a filter layer 1, an adsorption layer 2, and a bactericidal layer 3, wherein:

The filter layer 1 described in this embodiment adopts a submicron-scale multi-layer non-woven fabric with a tapered honeycomb structure, and is made by a weaving method or a lamination method. The three-dimensional filter layer structure section is shown in Figure 2. The pore sizes of the three-dimensional filter layer structure side wall 4 and the three-dimensional filter layer structure bottom 5 are different, the pores of the three-dimensional filter layer structure side wall 4 are large, and the inside is filled with activated carbon fibers 6, and the water entering from the three-dimensional filter layer structure side wall 4 Coarse dust will be adsorbed by the activated carbon fiber 6 again; the pores at the bottom 5 of the three-dimensional filter layer structure are relatively small to prevent coarse dust from entering; The first layer gradually decreases from the last layer, and the coarse dust and fine dust are filtered out in turn. This three-dimensional dust filter structure not only increases the dust filter area but does not increase resistance, and has the effect of reducing part of the noise.

In this embodiment, the filter layer 1 can also use long-lasting electrostatic non-woven fabric, which has super adsorption capacity for charged dust and PM2.5 small particle dust, low resistance, and easy cleaning; the non-woven fabric is A new generation of environmentally friendly materials, with the characteristics of water repellency, breathability, flexibility, non-combustibility, non-toxic, non-irritating, easy to wash, etc. As a non-woven filter material, non-woven fabrics are characterized by their unique three-dimensional network The advantages of uniform distribution, good filtration performance and low cost are gradually replacing traditional textile filter materials.

In this embodiment, the adsorption layer 2 is sandwiched between the filter layer 1 and the sterilization layer 3, and the adsorption material used in the adsorption layer 2 is activated carbon fiber (ACF), which is a new type of high-efficiency adsorbent. Compared with granular activated carbon, it has the advantages of large specific surface area, fast adsorption and desorption rate, and high adsorption efficiency; ACF contains many irregular structures, heterocyclic structures or microstructures containing surface functional groups, which have great surface energy. The micropores interact with the molecules on the pore wall to form a strong molecular field, which provides a high-pressure system for the physical and chemical changes of adsorbed molecules, which leads to better adsorption capacity of ACF for substances containing oxygen, chlorine and aromatic rings; the said The adsorption layer 2 can also use special-shaped cross-section carbon fibers to further increase its specific surface area and enhance its adsorption capacity.

In this embodiment, the bactericidal layer 3 adopts bactericidal fibers or bactericidal non-woven fabrics, wherein: the bactericidal fibers are made by adding bactericides to polyester polymers, and then spun into silk to make fibers; the bactericidal non-woven fabrics are machine sprayed or It is prepared by spraying bactericide on non-woven fabrics by dipping and other methods; the bactericide can be made of nano-silver, because nano-silver particles below 25nm can penetrate the cell wall of bacteria or viruses, and it can interact with the base enzymes used by bacteria or viruses for respiration. Combined, bacteria and viruses are suffocated to death, thereby effectively sterilizing and disinfecting the indoor air.

In this embodiment, the sterilizing layer 3 can also be used as a sterilizing layer by utilizing ultraviolet rays having a sterilizing effect to pass ultraviolet rays through the optical fibers woven into a network.

When this embodiment is actually used, the airflow entering the air purifier or air conditioner first passes through the filter layer, and the filter layer is made of sub-micron multi-layer structure non-woven fabric or a long-term electrostatically charged non-woven fabric with electrostatic dust collection function. Spinning cloth to remove large particles of pollutants and reduce the burden on the adsorption layer, and then remove small particles of pollutants and some toxic gases through the activated carbon fibers of the adsorption layer, and finally go through the sterilizing process of adding and spraying bactericide nano-silver After the layer kills bacteria and viruses, it enters the room, thereby realizing the purification, disinfection and sterilization of the indoor air.

In summary, the present invention adopts structural functional non-woven fabrics to have obvious adsorption capacity for suspended particles and PM2.5 particles; the activated carbon fibers are sandwiched between two layers of non-woven fabrics, which solves the problem of small particles being easily absorbed when granular adsorption materials are used. The problem of leakage; adding nano-silver to the non-woven fabric solves the problem that the traditional air purification filter element has no bactericidal effect. Compared with the traditional air purification filter element, the filter element provided by the present invention solves the problems of existing air purification filter elements such as slag dropping, difficult cleaning, and no sterilization function, and has small drag coefficient, high purification efficiency, sound absorption, easy cleaning, It has the advantages of bactericidal effect and small mass.

Specific embodiments of the invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims (4)

1. A functional composite air purification filter element with a 3D structure, characterized in that the filter element comprises a filter screen of three-layer structure, wherein: the first layer is a filter layer for removing large particle pollutants, and the second layer is for removing An adsorption layer for small particle pollutants and toxic gases, the third layer is a bactericidal layer for killing bacteria and viruses, and the adsorption layer is sandwiched between the filter layer and the bactericidal layer; The filter layer adopts sub-micron multi-layer structure non-woven fabric, and has a cone-shaped honeycomb three-dimensional dust filter structure, that is, a 3D structure; the multi-layer structure non-woven fabric is made by weaving or lamination; the filter The pore size of the layer gradually decreases from the first layer to the last layer; the non-woven fabric adopts a long-lasting electrostatic non-woven fabric with electrostatic dust absorption function; The adsorption layer adopts activated carbon fiber; The sterilizing layer is made of sterilizing fibers, sterilizing non-woven fabrics or nets woven from optical fibers that pass through ultraviolet rays; specifically: The bactericidal fiber is made by adding a bactericide to the spinning slurry, and then spinning into silk to make fibers; The sterilizing non-woven fabric is made by spraying a bactericide on the non-woven fabric by machine spraying or dipping; The ultraviolet light guide fiber is woven into a net by using the sterilizing effect of ultraviolet rays, and then the ultraviolet rays are passed through as a sterilizing layer. 2. A functional composite air purification filter element with a 3D structure according to claim 1, wherein the activated carbon fiber is a Y-shaped or rice-shaped activated carbon fiber with a special cross-section. 3. A functional composite air purification filter element with a 3D structure according to claim 1, wherein the fungicide is nano silver. 4. A functional composite air purification filter element with 3D structure according to claim 1, characterized in that the filter screen is sewn and cut into any desired shape according to requirements.