Automobile air conditioner negative ion cleaning filter screen

By combining a modified activated carbon layer, a manganese oxide catalyst layer, and a honeycomb aluminum plate layer, the problem of existing filters being unable to decompose formaldehyde and ozone is solved, achieving a highly efficient purification effect and ensuring the air quality inside the vehicle.

CN224545669UActive Publication Date: 2026-07-24GUANGZHOU GREEN NEW ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGZHOU GREEN NEW ENVIRONMENTAL PROTECTION TECH CO LTD
Filing Date
2025-10-13
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing automotive air conditioning negative ion cleaning filters cannot effectively decompose formaldehyde and ozone, affecting the health of passengers inside the vehicle.

Method used

A combination of modified activated carbon layer, manganese oxide catalyst layer and honeycomb aluminum plate layer, combined with wood, coal and synthetic fiber activated carbon layers, forms a multi-level synergistic purification system to enhance the decomposition capacity of formaldehyde and ozone.

Benefits of technology

It significantly improves the decomposition effect of formaldehyde and ozone, ensuring the respiratory safety of passengers in the vehicle, improving the purification effect and stability of the filter, and avoiding the generation of harmful byproducts.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a kind of automobile air conditioner negative ion clean filter screen, including frame assembly, filter screen assembly being arranged in the inside of frame assembly, negative ion filter layer being arranged in the inside rear side of frame assembly, the inside of frame assembly is fixedly connected with formaldehyde ozone filter mechanism, the formaldehyde ozone filter mechanism includes modified activated carbon layer, the back of modified activated carbon layer is fixedly connected with manganese oxide catalyst layer, the back of manganese oxide catalyst layer is fixedly connected with honeycomb aluminium plate layer, the inside of modified activated carbon layer is provided with wooden activated carbon layer, the bottom of wooden activated carbon layer is provided with coal activated carbon.The utility model negative ion clean filter screen changes the phenomenon that traditional cannot effectively decompose formaldehyde and ozone, uses modified activated carbon layer, manganese oxide catalyst layer and honeycomb aluminium plate layer to carry out formaldehyde decomposition and ozone filtration, just can guarantee the safety of passenger respiratory tract in car, increase the use effect of negative ion clean filter screen.
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Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, specifically to an automotive air conditioning negative ion purification filter. Background Technology

[0002] Car air conditioning negative ion purification filters are highly efficient air purification devices. Through a built-in negative ion generator, they release a large number of negatively charged ions, actively adsorbing suspended particulate matter such as dust, pollen, and PM2.5 in the air, while simultaneously decomposing harmful gases. Their multi-layered composite structure typically includes an antibacterial layer, an activated carbon layer, and a HEPA filter, effectively inhibiting the growth of bacteria and viruses and keeping the air inside the car fresh. These filters require no replacement during the purification process, have low energy consumption, and are especially suitable for people with allergies, significantly improving respiratory health and comfort while driving. Some high-end models also support intelligent monitoring, automatically adjusting the negative ion concentration for dynamic purification. According to a patent published on the China Patent Network, the patent title is "A Negative Ion Purifying Filter for Automotive Air Conditioning," patent application number 202021642334.6. It includes a base with a cover plate rotatably connected to its side via a pivot. A filter assembly body is installed inside the base. The filter assembly body consists of an electrostatic filter layer, an activated carbon intermediate layer, and a negative ion antibacterial layer. The electrostatic filter layer is made of electrostatic cotton, and an organic antibacterial pigment, made of nano-silver, is fixedly attached to its surface. This invention, through the combined use of the electrostatic filter layer, activated carbon intermediate layer, and negative ion antibacterial layer in the filter assembly body, significantly improves filter efficiency, effectively isolating many germs and eliminating other odors. This effectively maintains clean, healthy, and comfortable air inside the vehicle, while also enhancing the product's market competitiveness. However, the aforementioned negative ion purifying filter cannot effectively decompose substances such as formaldehyde and ozone, leaving passengers in the vehicle still susceptible to health effects from these substances, significantly impacting the effectiveness of the negative ion purifying filter.

[0003] Therefore, it is necessary to redesign and modify the negative ion purification filter to effectively prevent it from failing to decompose substances such as formaldehyde and ozone. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a negative ion cleaning filter for automotive air conditioning, which has the advantage of effectively decomposing formaldehyde and ozone, thus solving the problem of the inability to effectively decompose substances such as formaldehyde and ozone.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a negative ion cleaning filter for automotive air conditioning, comprising a frame assembly; A filter assembly located inside the frame assembly; A negative ion filter layer is set inside the rear side of the frame component; A formaldehyde ozone filtration mechanism is fixedly connected to the inner side of the frame assembly. The formaldehyde ozone filtration mechanism includes a modified activated carbon layer, a manganese oxide catalyst layer is fixedly connected to the back side of the modified activated carbon layer, and a honeycomb aluminum plate layer is fixedly connected to the back side of the manganese oxide catalyst layer.

[0006] As a preferred embodiment of this invention, the modified activated carbon layer contains a wood-based activated carbon layer, the bottom of the wood-based activated carbon layer contains coal-based activated carbon, and the bottom of the coal-based activated carbon layer contains synthetic fiber activated carbon.

[0007] In a preferred embodiment of this invention, the manganese oxide catalyst layer is provided with an activated carbon-supported metal layer inside, a zeolite molecular sieve layer is provided inside the activated carbon-supported metal layer, and a sulfide compound layer is provided at the bottom of the zeolite molecular sieve layer.

[0008] As a preferred embodiment of this invention, a manganese dioxide layer is disposed inside the honeycomb aluminum panel layer, and the manganese dioxide layer is used in conjunction with the honeycomb aluminum panel layer.

[0009] As a preferred embodiment of the present invention, an epoxy resin layer is provided at the bottom of the manganese dioxide layer, and the epoxy resin layer is used in conjunction with the manganese dioxide layer.

[0010] As a preferred embodiment of this invention, a polyurethane adhesive layer is provided at the bottom of the epoxy resin layer, and the polyurethane adhesive layer is used in conjunction with the epoxy resin layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model of negative ion purification filter changes the traditional phenomenon that it cannot effectively decompose formaldehyde and ozone. It uses a modified activated carbon layer, a manganese oxide catalyst layer and a honeycomb aluminum plate layer to decompose formaldehyde and filter ozone, which can ensure the safety of the respiratory tract of passengers in the vehicle and increase the effectiveness of the negative ion purification filter.

[0012] 2. This utility model, through the arrangement of wood-based activated carbon layer, coal-based activated carbon and synthetic fiber activated carbon, can capture small molecule polar pollutants, large molecule non-polar substances and nano-sized particles. At the same time, it can still adsorb formaldehyde in humid environments, and also has the effect of high temperature resistance. Furthermore, through the complementary properties of different materials, it can significantly improve the comprehensive purification effect of pollutants.

[0013] 3. This utility model, through the arrangement of activated carbon-supported metal layer, zeolite molecular sieve layer and sulfide compound layer, can form a multi-stage synergistic purification system, which can achieve efficient removal of different pollutants and improve the overall stability and lifespan of the filter element.

[0014] 4. By setting a manganese dioxide layer, this utility model can significantly improve the purification efficiency of ozone and some organic pollutants, without producing harmful byproducts, and also has a partial catalytic decomposition effect on organic compounds such as benzene series and alcohols.

[0015] 5. By setting an epoxy resin layer, this utility model can better adhere the molecular structure inside the honeycomb aluminum panel layer, thus preventing it from falling off.

[0016] 6. This utility model, through the setting of the polyurethane adhesive layer, can protect the epoxy resin layer and avoid the phenomenon of easy melting under high temperature. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the modified activated carbon layer of this utility model; Figure 3 This is a cross-sectional view of the manganese oxide catalyst layer of this utility model; Figure 4 This is a cross-sectional view of the honeycomb aluminum plate layer of this utility model.

[0018] In the diagram: 1. Frame assembly; 2. Filter assembly; 3. Negative ion filter layer; 4. Formaldehyde and ozone filtration mechanism; 5. Modified activated carbon layer; 6. Manganese oxide catalyst layer; 7. Honeycomb aluminum plate layer; 8. Wood-based activated carbon layer; 9. Coal-based activated carbon; 10. Synthetic fiber activated carbon; 11. Activated carbon supported metal layer; 12. Zeolite molecular sieve layer; 13. Sulfide compound layer; 14. Manganese dioxide layer; 15. Epoxy resin layer; 16. Polyurethane adhesive layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, the present invention provides a negative ion cleaning filter for automotive air conditioning, including a frame assembly 1; The filter assembly 2 is located inside the frame assembly 1; The negative ion filter layer 3 is set on the inner rear side of the frame component 1; A formaldehyde ozone filtration mechanism 4 is fixedly connected to the inner side of the frame component 1. The formaldehyde ozone filtration mechanism 4 includes a modified activated carbon layer 5. A manganese oxide catalyst layer 6 is fixedly connected to the back side of the modified activated carbon layer 5. A honeycomb aluminum plate layer 7 is fixedly connected to the back side of the manganese oxide catalyst layer 6.

[0021] refer to Figure 1 and Figure 2 The modified activated carbon layer 5 has a wood-based activated carbon layer 8 inside, a coal-based activated carbon layer 9 at the bottom of the wood-based activated carbon layer 8, and a synthetic fiber activated carbon layer 10 at the bottom of the coal-based activated carbon layer 9.

[0022] As a technical optimization of this utility model, by setting up a wood-based activated carbon layer 8, a coal-based activated carbon layer 9, and a synthetic fiber activated carbon layer 10, it is possible to capture small molecule polar pollutants, large molecule non-polar substances, and nano-sized particles. At the same time, it can still adsorb formaldehyde in a humid environment, and it also has a high temperature resistance effect. Furthermore, by complementing the characteristics of different materials, it can significantly improve the comprehensive purification effect on pollutants.

[0023] refer to Figure 1 and Figure 3 The manganese oxide catalyst layer 6 has an activated carbon-supported metal layer 11 inside, a zeolite molecular sieve layer 12 inside the activated carbon-supported metal layer 11, and a sulfide compound layer 13 at the bottom of the zeolite molecular sieve layer 12.

[0024] As a technical optimization of this utility model, by setting up an activated carbon-supported metal layer 11, a zeolite molecular sieve layer 12 and a sulfide compound layer 13, a multi-level synergistic purification system can be formed to achieve efficient removal of different pollutants and improve the overall stability and lifespan of the filter element.

[0025] refer to Figure 1 and Figure 4 The honeycomb aluminum panel layer 7 has a manganese dioxide layer 14 inside, which is used in conjunction with the honeycomb aluminum panel layer 7.

[0026] As a technical optimization of this utility model, the manganese dioxide layer 14 can significantly improve the purification efficiency of ozone and some organic pollutants, without producing harmful byproducts, and also has a partial catalytic decomposition effect on organic compounds such as benzene series and alcohols.

[0027] refer to Figure 1 and Figure 4 An epoxy resin layer 15 is provided at the bottom of the manganese dioxide layer 14, and the epoxy resin layer 15 is used in conjunction with the manganese dioxide layer 14.

[0028] As a technical optimization of this utility model, the epoxy resin layer 15 enables the molecular structure inside the honeycomb aluminum plate layer 7 to adhere better, thus preventing detachment.

[0029] refer to Figure 1 and Figure 4 A polyurethane adhesive layer 16 is provided at the bottom of the epoxy resin layer 15, and the polyurethane adhesive layer 16 is used in conjunction with the epoxy resin layer 15.

[0030] As a technical optimization of this utility model, the polyurethane adhesive layer 16 can protect the epoxy resin layer 15 and prevent it from melting easily at high temperatures.

[0031] The working principle and usage process of this utility model are as follows: First, the modified activated carbon layer 5 and its internal wood-based activated carbon layer 8, coal-based activated carbon 9 and synthetic fiber activated carbon 10 are used for primary filtration. Then, the manganese oxide catalyst layer 6 and its internal activated carbon-supported metal layer 11, zeolite molecular sieve layer 12 and sulfide compound layer 13 are used for secondary filtration. Finally, the honeycomb aluminum plate layer 7 and its internal manganese dioxide layer 14, epoxy resin layer 15 and polyurethane adhesive layer 16 are used for further filtration, thereby achieving the effect of effectively decomposing formaldehyde and ozone.

[0032] In summary, this automotive air conditioning negative ion purification filter overcomes the limitations of traditional filters that cannot effectively decompose formaldehyde and ozone. By employing a modified activated carbon layer 5, a manganese oxide catalyst layer 6, and a honeycomb aluminum plate layer 7 for formaldehyde decomposition and ozone filtration, it ensures the safety of passengers' respiratory tracts and enhances the effectiveness of the negative ion purification filter.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative ion cleaning filter for automotive air conditioning, comprising a frame assembly (1). A filter assembly (2) is disposed inside the frame assembly (1); A negative ion filter layer (3) is set on the inner rear side of the frame component (1). Its features are: The formaldehyde ozone filtration mechanism (4) is fixedly connected to the inner side of the frame assembly (1). The formaldehyde ozone filtration mechanism (4) includes a modified activated carbon layer (5). A manganese oxide catalyst layer (6) is fixedly connected to the back side of the modified activated carbon layer (5). A honeycomb aluminum plate layer (7) is fixedly connected to the back side of the manganese oxide catalyst layer (6).

2. The automotive air conditioning negative ion purification filter according to claim 1, characterized in that: The modified activated carbon layer (5) has a wood-based activated carbon layer (8) inside, and a coal-based activated carbon layer (9) is provided at the bottom of the wood-based activated carbon layer (8), and a synthetic fiber activated carbon layer (10) is provided at the bottom of the coal-based activated carbon layer (9).

3. The automotive air conditioning negative ion purification filter according to claim 1, characterized in that: The manganese oxide catalyst layer (6) has an activated carbon-supported metal layer (11) inside, a zeolite molecular sieve layer (12) is provided inside the activated carbon-supported metal layer (11), and a sulfide compound layer (13) is provided at the bottom of the zeolite molecular sieve layer (12).

4. The automotive air conditioning negative ion purification filter according to claim 1, characterized in that: The honeycomb aluminum panel layer (7) has a manganese dioxide layer (14) inside, which is used in conjunction with the honeycomb aluminum panel layer (7).

5. The automotive air conditioning negative ion purification filter according to claim 4, characterized in that: An epoxy resin layer (15) is provided at the bottom of the manganese dioxide layer (14), and the epoxy resin layer (15) is used in conjunction with the manganese dioxide layer (14).

6. The automotive air conditioning negative ion purification filter according to claim 5, characterized in that: A polyurethane adhesive layer (16) is provided at the bottom of the epoxy resin layer (15), and the polyurethane adhesive layer (16) is used in conjunction with the epoxy resin layer (15).