Air purification assembly and air purifier

Abstract

The utility model belongs to the field of air purification, and relates to an air purification assembly and an air purifier. The air purification assembly comprises a primary filter screen layer, a graphene manganese-based filter screen layer and a graphene manganese-based purification screen layer which are stacked in sequence; the graphene manganese-based filter screen layer is a filter screen layer formed by a graphene manganese-based material, and the graphene manganese-based material comprises a porous framework, and graphene and a manganese-based catalyst which are loaded on the porous framework; the graphene manganese-based purification net layer comprises an elastic framework, a gap is formed in the elastic framework, the gap is filled with a purification material, and the purification material is a composite material of graphene, activated carbon and a manganese-based catalyst. The air purification assembly provided by the utility model can quickly adsorb and purify peculiar smell in air, simultaneously realizes a good antibacterial effect, prevents mould breeding, purifies the peculiar smell of pets, and ensures a healthy living space at the same time.

Description

Technical Field

[0001] The utility model belongs to the field of air purification, and particularly relates to an air purification component and an air purifier. Background Art

[0002] With the continuous development of the pet economy, pet odor management has become an issue that pet-owning families pay more and more attention to. The sources of pet environmental odor mainly include excreta (feces and urine), mouth, skin, hair and saliva. Among them, excreta contains various inorganic ions such as Na + , K + , Cl - , etc., organic components such as urea and uric acid, various trace elements and urease, etc. Some substances contained in excreta itself, such as uric acid, have a very strong odor. Urea decomposes to produce ammonia under the action of urea bacteria, which results in a very strong odor of excreta. Representative pollutants in excreta include ammonia, methanethiol, dimethyl sulfide, isovaleric acid, etc.

[0003] The purification means for pet spaces mainly include odor covering and biological enzyme deodorant sprays, solid biological enzymes, activated carbon adsorption, air purifiers, etc. with purification functions. Among them, the air purifier means for actively treating air odor has the most significant effect. An air filter element with adsorption and decomposition functions is installed in the air purifier, which can achieve rapid capture and decomposition of space odor. Activated carbon is often used as the adsorption material in the air filter element, and biological enzyme substances are often used as the decomposition material. However, the adsorption efficiency of activated carbon is low, the adsorption period (service life) is short, and it needs to be replaced in time when the adsorption reaches saturation to ensure the purification effect, which requires frequent replacement of the filter element, and it is also extremely easy to mildew when used in humid areas, bringing health hazards to the living environment. Although biological enzyme substances can decompose odors, the decomposition speed is slow, especially for substances such as lipids, phenols and indoles, the decomposition effect is very small. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of low adsorption efficiency, short adsorption period and easy mildew when used in humid areas of traditional activated carbon-based adsorbents, and to provide an air purification component with high adsorption efficiency, long adsorption period and effective avoidance of mildew when used in humid areas.

[0005] Specifically, the air purification component provided by the present utility model includes a primary filter layer, a graphene manganese-based filter layer, and a graphene manganese-based purification mesh layer stacked in sequence; the graphene manganese-based filter layer is a filter layer formed by a graphene manganese-based material, and the graphene manganese-based material includes a porous framework and graphene and manganese-based catalysts supported on the porous framework; the graphene manganese-based purification mesh layer includes an elastic framework, and the elastic framework has gaps, and the gaps are filled with purification materials to form a packing area, and the purification materials are a composite material of graphene, activated carbon, and manganese-based catalysts.

[0006] The present utility model uses a multi-layer composite structure air purification component of a primary filter layer, a graphene manganese-based filter layer, and a graphene manganese-based purification mesh layer to replace the traditional activated carbon-based air purification component. Among them, the primary filter layer can preliminarily separate animal hairs, fibers, and large particle pollutants to prevent clogging of the active sites of the internal structure. The graphene manganese-based filter layer is formed by a graphene manganese-based material. On the one hand, graphene has a huge specific surface area and can easily capture and adsorb pollutants in the air. However, since graphene is a two-dimensional single-layer structure, the captured and adsorbed pollutants will be slowly released on the surface of graphene. During this process, the active sites of the manganese-based catalyst can just combine with the gradually released pollutants and carry out decomposition reactions, completely decomposing the pollutants into carbon dioxide, water molecules, and other small molecule substances and releasing them into the air; on the other hand, graphene itself has excellent antibacterial properties. During the process of purifying pollutants, bacteria and fungi in the air are captured and adsorbed under the action of graphene. The ultra-thin graphene structure cuts and sterilizes bacteria and fungi, and at the same time, graphene can also adsorb and extract the phospholipids on the cell surface to destroy the cell structure to achieve sterilization, thus ensuring excellent antibacterial properties when used in a humid environment. The graphene manganese-based purification mesh layer can further adsorb and degrade the benzene series substances that are difficult to degrade in pollutants. In summary, the air purification component provided by the present utility model can quickly adsorb and purify the air odor, and at the same time achieve a good antibacterial effect, prevent the growth of mildew, purify the pet odor, and ensure a healthy living space.

[0007] In a preferred embodiment, the air purification component further includes a negative ion release mesh layer stacked on the surface of the graphene manganese-based purification mesh layer. At this time, the air purification component can not only purify the air and inhibit the growth of bacteria, but also release negative ions, providing a healthier environment for the living space. Description of the Drawings

[0008] Figure 1 It is a schematic diagram of the specific structure of the air purification component provided by the present utility model.

[0009] Description of the drawing reference numerals: 100 - primary filter layer; 200 - graphene manganese-based filter layer; 300 - graphene manganese-based purification layer; 400 - negative ion release layer. Detailed implementation manners

[0010] As Figure 1 shown, the air purification component provided by the present utility model includes a primary filter layer 100, a graphene manganese-based filter layer 200, and a graphene manganese-based purification layer 300 which are stacked in sequence. When working, the air pollutants to be purified pass through the primary filter layer 100, the graphene manganese-based filter layer 200, and the graphene manganese-based purification layer 300 in sequence. Animal hairs, fibers, and large particle pollutants in the air pollutants will be blocked and intercepted by the primary filter layer 100 to avoid the blockage of active sites in the graphene manganese-based filter layer 200 and the graphene manganese-based purification layer 300; when reaching the graphene manganese-based filter layer 200, most pollutants will be captured and adsorbed by graphene, and the free pollutants will be decomposed into carbon dioxide, water molecules, and other small molecule substances by the manganese-based catalyst. At the same time, bacteria and fungi in the air will be killed by graphene, achieving a good antibacterial effect; when reaching the graphene manganese-based purification layer 300, benzene series substances that are difficult to be adsorbed and decomposed by the graphene manganese-based filter layer 200 can be further adsorbed and degraded, thereby realizing the deep purification of the air. In summary, the air purification component captures and adsorbs pollutants with the huge specific surface area of graphene, and conducts thorough oxidative decomposition by continuously releasing them to the manganese-based catalyst. Therefore, compared with traditional activated carbon and its modified materials, it has the advantages of a long adsorption period (replacement period), high adsorption efficiency, and no secondary release of organic substances. In addition, the extremely strong bactericidal effect of graphene provides a very good solution to the problem of moldy air purifier filters in humid areas.

[0011] The thicknesses of the primary filter layer 100, the graphene manganese-based filter layer 200, and the graphene manganese-based purification layer 300 can be reasonably selected according to the specific components in the air pollutants. When the contents of animal hairs, fibers, and large particulate pollutants in the air pollutants are relatively high, the thickness of the primary filter layer 100 should be appropriately increased; conversely, the thickness of the primary filter layer 100 should be appropriately decreased. When the pollutants that are easily adsorbed and degraded in the air pollutants (such as ammonia, methanethiol, dimethyl sulfide, isovaleric acid, etc.) account for a relatively high proportion, the thickness of the graphene manganese-based filter layer 200 should be appropriately increased; conversely, the thickness of the graphene manganese-based filter layer 200 should be appropriately decreased. When the benzene series substances that are difficult to decompose in the air pollutants (such as phenol, indole, etc.) account for a relatively high proportion, the thickness of the graphene manganese-based purification layer 300 should be appropriately increased; conversely, the thickness of the graphene manganese-based purification layer 300 should be appropriately decreased. Generally, the thickness of the primary filter layer is preferably 0.1 - 2 mm, such as 0.1 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, or any value between them. The thickness of the graphene manganese-based filter layer is preferably 2 - 5 cm, such as 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, or any value between them. The thickness of the graphene manganese-based purification layer is preferably 1 - 3 cm, such as 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, or any value between them. In a preferred embodiment, the thickness of the primary filter layer is 0.8 - 1.2 mm, the thickness of the graphene manganese-based filter layer is 3.5 - 4.5 cm, and the thickness of the graphene manganese-based purification layer is 1.5 - 2.5 cm. At this time, the purification effect is better.

[0012] The primary filter 100 uses a high-throughput and low-air-resistance mesh filter material, and its material can specifically be selected from at least one of metal, plastic, non-woven fabric, and porous sponge. The primary filter 100 can preliminarily separate animal hairs, fibers, and large particulate pollutants to prevent clogging of the active sites of the internal structure. In addition, the average pore size of the primary filter 100 is preferably 5 - 20 mesh, such as 5 mesh, 8 mesh, 10 mesh, 12 mesh, 15 mesh, 18 mesh, 20 mesh, or any value between them.

[0013] The graphene manganese-based filter layer 200 is a filter layer formed by a graphene manganese-based material, and the graphene manganese-based material includes a porous framework and graphene and manganese-based catalysts supported on the porous framework. Among them, the manganese-based catalyst can be manganese dioxide in a single crystal form or a mixed crystal form, and manganese dioxide catalysts loaded with noble metals, transition metals, etc. The graphene manganese-based filter layer 200 quickly captures and adsorbs odor substances through the huge specific surface area of graphene, providing a high-concentration odor substance environment, and then oxidizes and degrades the odor substances through the manganese-based catalyst. The material of the porous framework in the graphene manganese-based filter layer 200 can specifically be selected from at least one of plastics, PET, non-woven fabrics, wood, porous sponges, metals, and paper. The graphene manganese-based material can be obtained through commercial purchase or can be prepared by various existing methods. For example, it can be prepared by the methods disclosed in CN113578323A, CN116654912A, etc. In addition, the average pore size of the graphene manganese-based filter layer 200 is preferably 15-50 mesh, such as 15 mesh, 20 mesh, 25 mesh, 30 mesh, 35 mesh, 40 mesh, 45 mesh, 50 mesh, or any value between them.

[0014] The graphene manganese-based purification layer 300 includes an elastic framework, and there are gaps in the elastic framework. The gaps are filled with a purification material to form a packing area, and the purification material is a composite material of graphene, activated carbon, and a manganese-based catalyst. The graphene manganese-based purification layer 300 is mainly used for further adsorbing and decomposing the refractory benzene series in pet odors. The shape of the elastic framework is not particularly limited as long as it can provide a certain strength and can accommodate the purification material. For example, it can be S-shaped, Y-shaped, dendritic, etc. In a preferred embodiment, the elastic framework has a finger-like structure with an opening upward, and the gap is the space position between fingers. Further, the distance between fingers is preferably 3-10 mm. The material of the porous framework in the graphene manganese-based filter layer 300 can specifically be selected from at least one of plastics, PET, non-woven fabrics, wood, porous sponges, metals, and paper. The purification material can be obtained through commercial purchase or can be prepared by various existing methods. For example, it can be prepared by the method disclosed in CN110624398A. In addition, the average pore size of the porous structure of the elastic framework in the graphene manganese-based purification layer 300 is preferably 30-100 mesh, such as 30 mesh, 40 mesh, 50 mesh, 60 mesh, 70 mesh, 80 mesh, 90 mesh, 100 mesh, or any value between them.

[0015] In a preferred embodiment, the average pore size of the primary filter screen 100 is 5-8 mesh, the average pore size of the graphene manganese-based filter screen layer 200 is preferably 15-20 mesh, and the average pore size of the elastic skeleton porous structure in the graphene manganese-based purification mesh layer is preferably 30-35 mesh. At this time, the air resistance is smaller.

[0016] The air purification component preferably further includes a negative ion release mesh layer 400 laminated on the surface of the graphene manganese-based purification mesh layer. At this time, the air purification component can not only purify air and sterilize, but also release negative ions. Accordingly, the air purification component includes a primary filter screen layer 100, a graphene manganese-based filter screen layer 200, a graphene manganese-based purification mesh layer 300, and a negative ion release mesh layer 400 laminated in sequence. The negative ion release mesh layer 400 includes a porous material layer and a porous tourmaline layer. The porous material layer is close to the graphene manganese-based purification mesh layer 300, while the porous tourmaline layer is far from the graphene manganese-based purification mesh layer 300. The negative ion release mesh layer 400 is formed by coating tourmaline powder or the like. The thickness ratio of the porous material layer to the porous tourmaline layer is preferably 1:(0.1-0.2), such as 1:0.1, 1:0.12, 1:0.14, 1:0.16, 1:0.18, 1:0.2 or any value therebetween. The material of the porous material layer can be, for example, at least one of PET, porous sponge, non-woven fabric, and paper.

[0017] The air purifier provided by the present utility model uses the above air purification component as a filter element.

[0018] The present utility model will be described in detail below through examples.

[0019] Example 1

[0020] The air purification component provided in this example includes a primary filter screen layer 100, a graphene manganese-based filter screen layer 200, and a graphene manganese-based purification mesh layer 300 laminated in sequence.

[0021] The primary filter screen layer 100 is a porous sponge layer with a thickness of 1 mm and an average pore size of 5 mesh.

[0022] The graphene manganese-based filter screen layer 200 is a filter screen layer formed of a graphene manganese-based material. The graphene manganese-based material includes a porous skeleton and graphene and a manganese-based catalyst loaded on the porous skeleton. The thickness of the graphene manganese-based filter screen layer 200 is 4 cm and the average pore size is 15 mesh. The graphene manganese-based material is prepared according to the method disclosed in CN113578323A.

[0023] The graphene manganese-based purification mesh layer 300 includes an elastic skeleton with gaps therein. The gaps are filled with a purification material to form a packing area, and the purification material is a composite of graphene, activated carbon, and a manganese-based catalyst. The elastic skeleton has a finger-like structure with an upward opening, and the gaps are the spatial positions between the fingers. The distance between the fingers is 5 mm. The material of the porous skeleton in the graphene manganese-based filter mesh layer 300 is porous sponge. The purification material is prepared by the method disclosed in CN110624398A. The thickness of the graphene manganese-based purification mesh layer 300 is 2 cm, and the average pore size is 30 mesh.

[0024] Example 2

[0025] As Figure 1 shown, the air purification assembly provided in this example is provided with a negative ion release mesh layer 400 with a thickness of 0.5 mm on the basis of the air purification assembly provided in Example 1. The negative ion release mesh layer 400 includes a porous material layer and a porous tourmaline layer. The porous material layer is close to the graphene manganese-based purification mesh layer 300, while the porous tourmaline layer is far from the graphene manganese-based purification mesh layer 300. The thickness ratio of the porous material layer to the porous tourmaline layer is 1:0.2. The material of the porous material layer is porous sponge.

[0026] Comparative Example 1

[0027] The air purification assembly provided in this comparative example replaces the graphene manganese-based purification mesh layer 300 with a graphene manganese-based filter mesh layer 200 of the same thickness on the basis of the air purification assembly provided in Example 1, and the rest of the components are the same as those in Example 1, obtaining a reference air purification assembly.

[0028] Test Example

[0029] The test device is a closed test chamber. A filter plate is arranged in the middle of the closed test chamber to divide the closed test chamber into an air inlet part and an air outlet part. The air inlet part is provided with a gas inlet, and the air outlet part is provided with a gas outlet. The filter plates are the air purification assemblies provided in each example and comparative example. The gas to be purified is continuously introduced into the closed test chamber from the gas inlet of the air inlet part at a flow rate of 10 m 3 / h, flows into the air outlet part after being purified by the air purification assembly, and then is continuously discharged from the gas outlet.

[0030] After continuous purification for 10 min and 30 d, the adsorption rates of ammonia, methanethiol, dimethyl sulfide, isovaleric acid, and benzene series (phenol and indole) in the gas to be purified and the surface mildew situation of the air purification assembly are shown in Table 1.

[0031] Table 1

[0032]

[0033] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principles and spirit of the present utility model.

Claims

1. An air purification component, characterized in that, The air purification component includes a primary filter layer, a graphene manganese-based filter layer, and a graphene manganese-based purification mesh layer that are stacked in sequence; the graphene manganese-based filter layer is a filter layer formed by a graphene manganese-based material, and the graphene manganese-based material includes a porous framework and graphene and a manganese-based catalyst loaded on the porous framework; the graphene manganese-based purification mesh layer includes an elastic framework, and there are gaps in the elastic framework, and a purification material is filled in the gaps to form a packing area, and the purification material is a composite material of graphene, activated carbon, and a manganese-based catalyst.

2. The air purification component according to claim 1, characterized in that, The thickness of the primary filter layer is 0.1-2 mm; the thickness of the graphene manganese-based filter layer is 2-5 cm; the thickness of the graphene manganese-based purification mesh layer is 1-3 cm.

3. The air purification component according to claim 1, wherein The average pore size of the primary filter layer is 5-20 mesh; the average pore size of the graphene manganese-based filter layer is 15-50 mesh; the average pore size of the porous structure of the elastic framework in the graphene manganese-based purification mesh layer is 30-100 mesh.

4. The air purification component according to claim 1, characterized in that, The elastic framework has a finger-like structure with the opening facing upward, and the gap is the spatial position between fingers.

5. The air purification component according to claim 4, wherein The distance between fingers is 3-10 mm.

6. The air purification component according to any one of claims 1 to 5, characterized in that, The air purification component further includes a negative ion release mesh layer stacked on the surface of the graphene manganese-based purification mesh layer.

7. The air purification component according to claim 6, wherein The thickness of the negative ion release mesh layer is 0.5-3 mm.

8. An air purifier, characterized in that, The air purifier uses the air purification component described in any one of claims 1 to 7 as a filter element.

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