Vehicle-mounted air conditioner filter with efficient protection function

Abstract

The invention discloses a vehicle-mounted air conditioner filter with an efficient protection function, and relates to the technical field of vehicle-mounted air conditioner filters, a frame assembly is composed of a non-woven fabric fluffy frame strip and a PET frame strip, a filter material assembly is fixedly connected to an inner cavity of the frame assembly, a filter material assembly framework layer is arranged on the filter material assembly framework layer, and an activated carbon layer adheres to the framework layer. According to the present invention, bacteria, dust and virus vectors can be filtered, such that the filtration material assembly has functions of mildew resistance, bacteria resistance, virus resistance and mite resistance, the bacteria, the dust and the virus vectors can be effectively filtered from entering the vehicle, and the filtration effect is good. The high-efficiency adsorption performance is achieved for gaseous pollution sources discharged by automobile exhaust, the filter layer is protected against potential quality hazards such as abrasion or scraping in the machining process, and meanwhile low resistance and high ventilation quantity of the product are kept.

Description

Technical Field

[0001] This invention relates to the field of vehicle air conditioning filter technology, specifically a vehicle air conditioning filter with high-efficiency protection function. Background Technology

[0002] As competition in the automotive market intensifies, major automakers are launching new models to cater to diverse consumer aesthetics and needs. Among the numerous models available, most brands and products attract users with their appearance and performance. However, it's undeniable that as living standards improve, a car's health and safety are becoming increasingly important factors for Chinese consumers when making purchasing decisions. The future of automobiles is shifting from a means of transportation to a pre-booked travel experience, and the "invisible" safety of the cabin is receiving increasing attention. According to relevant test data, when a vehicle is in a high-temperature environment, the formaldehyde concentration increases by 0.4 times for every 1 degree Celsius increase in the interior temperature.

[0003] For example, in the high temperatures of summer, if a vehicle is exposed to the sun for an hour, the interior temperature may reach 50 degrees Celsius. Under such high temperatures, toxic gases released inside the vehicle can cause drivers to experience headaches, dizziness, and other discomfort, and may even pose a threat to their health. To ensure cabin air quality, the China Automotive Technology and Research Center (CATARC) developed the "China Green Vehicle Evaluation Regulations." These regulations require every vehicle meeting the green vehicle evaluation standard to be equipped with a CN95 air conditioning filter and an intelligent cabin cleaning system. Furthermore, the purification system can quickly remove fine particulate matter from the air and settle bacteria.

[0004] When traveling with children, special attention should be paid to environmental allergies. Compared to adults, children's skin is thinner and more delicate, and their immune system is not fully developed. When exposed to germs, they are more prone to skin diseases. Therefore, based on actual usage, we have improved the existing technology mentioned above. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A vehicle air conditioning filter with high-efficiency protection function includes: The border assembly consists of non-woven fabric fluffy border strips and PET border strips; The filter media assembly is fixedly connected to the inner cavity of the frame assembly. The filter media assembly has a skeleton layer, an activated carbon layer is bonded to the skeleton layer, a meltblown layer is bonded to the activated carbon layer, an electrostatic cotton layer is bonded to the meltblown layer, and a PET protective layer is bonded to the electrostatic cotton layer.

[0008] Furthermore, the skeleton layer is made of long fiber skeleton and is treated with a four-proof finishing agent, and its surface is coated with strong oxidizing molecules to filter bacteria, dust and virus carriers.

[0009] Furthermore, the activated carbon layer is a modified coconut shell activated carbon layer, which adsorbs gaseous pollutants in automobile exhaust.

[0010] Furthermore: the electrostatic cotton layer is electrostatic electret cotton, and the electrostatic cotton layer works in conjunction with the meltblown layer to filter particulate matter.

[0011] Furthermore, the PET protective layer is made of coarse denier long fiber material.

[0012] Furthermore: the filter media assembly is seamlessly bonded to the inner wall of the frame assembly using hot melt adhesive.

[0013] Furthermore: the filter media assembly is folded in a pleated manner within the frame assembly.

[0014] Further: A method for preparing a vehicle air conditioning filter with high-efficiency protective function includes the following steps: preparation of the air conditioning filter media assembly; post-processing of the filter media assembly; trial production and testing of samples; adjustment of material parameters and processes based on the trial production and testing results; and packaging of the product after it passes inspection. Furthermore, in the sample preparation, an automatic adjustable finishing agent coating production line was used for the finishing agent treatment of the skeleton layer, which includes adjustable liquid tank roller immersion height, automatic alignment material rack and load capacity digital display, and the oven temperature range is 0-200 degrees.

[0015] Further testing of the samples includes testing the filter media resistance within the filter media assembly, filtration performance, and dust holding capacity.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. According to test data, the skeleton layer of this invention is impregnated with a four-proof finishing agent and its surface is coated with strong oxidizing molecules. This filters bacteria, dust, and virus carriers, giving the filter material component anti-mildew, antibacterial, antiviral, and anti-mite functions. The anti-mite effect reaches over 95%, and the filtration efficiency for particles with a diameter of 0.3µm reaches over 95%. It can effectively filter bacteria, dust, and virus carriers from entering the vehicle. The activated carbon layer is a modified coconut shell activated carbon layer, which adsorbs gaseous pollutants in automobile exhaust. It has a high adsorption performance for gaseous pollutants emitted by automobile exhaust. The electrostatic electret cotton layer and the meltblown layer work together to filter particulate matter. The filtration efficiency for particulate matter can reach 95%, while also having a high ventilation volume. The PET protective layer made of coarse denier long fiber material can protect the filter layer from wear or scratches during processing, while maintaining low resistance and high ventilation volume. This effectively improves the health and safety of the car air conditioning filter, filtering particulate matter and simultaneously settling bacteria.

[0017] Other features and advantages of this application will be set forth in the following description, and the objectives and other advantages of this application can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0018] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a conventional air conditioning filter. Figure 3 This is a comparison table of the technical indicators of microbial filtration performance in this invention; Figure 4 This is a table comparing the gas adsorption capacity in this invention.

[0021] In the diagram: 10, frame assembly; 20, filter material assembly; 21, skeleton layer; 22, activated carbon layer; 23, meltblown layer; 24, electrostatic cotton layer; 25, PET protective layer. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0025] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0026] Please see Figure 1 This invention provides a technical solution: a vehicle air conditioning filter with high-efficiency protection function, comprising: The frame assembly 10 is composed of non-woven fabric fluffy frame strips and PET frame strips. It should be noted that the non-woven fabric fluffy frame strips serve as shaping support for the air conditioning filter element and also have a certain degree of softness, which can improve the sealing performance. The PET frame strips are used to improve the high edge strength of the air conditioning filter element, ensuring that the air conditioning filter has good sealing performance when installed in the air conditioning assembly. The filter media assembly 20 is fixedly connected to the inner cavity of the frame assembly 10. The filter media assembly 20 has a skeleton layer 21, an activated carbon layer 22 is bonded to the skeleton layer 21, a meltblown layer 23 is bonded to the activated carbon layer 22, an electrostatic cotton layer 24 is bonded to the meltblown layer 23, and a PET protective layer 25 is bonded to the electrostatic cotton layer 24. Figure 2 The structure of this air conditioning filter is the same as that of a conventional air conditioning filter on the market. Its frame assembly 10 is a conventional frame structure, and its filter material assembly 20 only includes a melt-blown layer 23, an electrostatic cotton layer 24, and a PET protective layer 25. The filter material assembly 20 in this air conditioning filter has significant improvements in structure and materials compared to conventional air conditioning filters.

[0027] Preferably, the skeleton layer 21 is made of long fiber skeleton and is treated with a four-proof finishing agent. Its surface is coated with strong oxidizing molecules to filter bacteria, dust and virus carriers, giving the filter material component 20 anti-mildew, antibacterial, antiviral and anti-mite functions. The anti-mite effect is over 95% and the filtration efficiency for particles with a diameter of 0.3µm is over 95%, effectively filtering bacteria, dust and virus carriers from entering the vehicle. The activated carbon layer 22 is a modified coconut shell activated carbon layer that adsorbs gaseous pollutants in automobile exhaust. It has high adsorption performance for gaseous pollutants emitted by automobile exhaust. The electrostatic cotton layer 24 is electrostatic electret cotton and works with the meltblown layer 23 to filter particulate matter. The filtration efficiency for particulate matter is 95% and it also has a high ventilation volume. The PET protective layer 25 is made of coarse denier long fiber material, which can protect the filter layer from wear or scratches during processing and maintain the product's low resistance and high ventilation volume. The filter media assembly 20 is seamlessly bonded to the inner wall of the frame assembly 10 using hot melt adhesive. The filter media assembly 20 is folded in a pleated manner within the frame assembly 10. Figure 1 As can be seen, the filter material assembly 20 is folded into a pleat shape and connected to the inner wall of the frame assembly 10.

[0028] Preferably, a method for preparing a vehicle air conditioning filter with high-efficiency protection function includes the following steps: preparation of the air conditioning filter media assembly 20; post-processing of the media assembly 20; trial production and testing of samples; adjustment of material parameters and processes based on the trial production and testing results; and packaging of the product after it passes the test.

[0029] Preferably, in the sample preparation, an automatic adjustable finishing agent coating production line is used for the finishing agent treatment of the skeleton layer 21, including adjustable liquid tank roller immersion height, automatic alignment material rack and load capacity digital display, and the oven temperature range is 0-200 degrees.

[0030] Preferably, the sample testing includes filter media resistance testing, filtration performance testing, and dust holding capacity testing within the filter media assembly 20.

[0031] It should be noted that the resistance test, filtration performance test, and dust holding capacity test of filter media component 20 meet the CN95 filter element certification standards of China Automotive Technology and Research Center, and the standards followed include: (1) ISO / TS 11155-1:2001 Road vehicles---Passenger compartment air filters---Part 1: Particulate matter filters test; (1) ISO / TS 11155-2:2001 Road vehicles---Passenger compartment air filters---Part 2: Gas filter testing; (2) GB / T 32085.1-2015 Automotive air conditioning filters - Part 1: Dust filtration test; (3) GB / T 32085.1-2015 Automotive air conditioning filters - Part 2: Gas filtration test; And includes Figure 3 Comparison table of technical indicators for microbial filtration performance and Figure 4 Table comparing the adsorption capacity of gases in the middle.

[0032] The overall test data for the prototype samples are as follows: General requirements: 1. Material odor: ≤3 levels.

[0033] 2. Ash storage capacity: Under a gas flow rate of 300 m³ / h, for A2 ash testing, when the pressure rises by 200 Pa, ≥8g.

[0034] 3. Initial pressure drop: (1) ≤50 Pa at 150 m³ / h; (2) ≤90 Pa at 300 m³ / h; (3) ≤160 Pa at 450 m³ / h; (4) ≤240 Pa at 600 m³ / h.

[0035] 4. Particle filtration efficiency: A2 ash test at a gas flow rate of 300 m³ / h. (1) ≥95% of particles are 0.3 μm in size; (2) ≥95% of particles are 2.5 μm in size; (3) ≥95% of particles are 10 μm.

[0036] 5. Gas adsorption performance: at a gas flow rate of 150 m³ / h (1) n-Butane, zero-time adsorption efficiency ≥45%, 1-min efficiency ≥20%, 5-min efficiency ≥10%, dirt holding capacity ≥0.8g; (2) Toluene, adsorption efficiency at zero time ≥70%, efficiency at 1 min ≥60%, efficiency at 5 min ≥40%, dirt holding capacity ≥11g; (3) Sulfur dioxide: zero-time adsorption efficiency ≥65%, 1-minute efficiency ≥40%, 5-minute efficiency ≥20%, and dirt-holding capacity ≥1.5g. The comprehensive data obtained is as follows: (Filter media resistance test) Resistance ≤ 90Pa @ 300m3 / h; (Filtration performance test) Efficiency ≥ 95% @ A2 dust; (Dust holding capacity test) Dust holding capacity ≥ 12g @ A2 dust.

[0037] Antibacterial rate >99% (GB / T 20944:2008); Mildew resistance grade 0 (GB / T 24346:2009); Antiviral activity rate >99% (ISO 18184:2014); Anti-mite inhibition rate >95% (GB / T 24253: 2009).

[0038] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A vehicle air conditioning filter with high-efficiency protection function, characterized in that, include: The border assembly (10) is composed of a non-woven fabric fluffy border strip and a PET border strip; The filter material assembly (20) is fixedly connected to the inner cavity of the frame assembly (10). The filter material assembly (20) has a skeleton layer (21), an activated carbon layer (22) is bonded to the skeleton layer (21), a meltblown layer (23) is bonded to the activated carbon layer (22), an electrostatic cotton layer (24) is bonded to the meltblown layer (23), and a PET protective layer (25) is bonded to the electrostatic cotton layer (24).

2. The vehicle air conditioning filter with high-efficiency protection function according to claim 1, characterized in that: The skeleton layer (21) is made of long fiber skeleton and is treated with a four-proof finishing agent. Its surface is coated with strong oxidizing molecules to filter bacteria, dust and virus carriers.

3. A vehicle air conditioning filter with high-efficiency protection function according to claim 1, characterized in that: The activated carbon layer (22) is a modified coconut shell activated carbon layer that adsorbs gaseous pollutants in automobile exhaust.

4. A vehicle air conditioning filter with high-efficiency protection function according to claim 1, characterized in that: The electrostatic cotton layer (24) is electrostatic electret cotton, and the electrostatic cotton layer (24) works in conjunction with the meltblown layer to filter particulate matter.

5. A vehicle air conditioning filter with high-efficiency protection function according to claim 1, characterized in that: The PET protective layer (25) is made of coarse denier long fiber material.

6. A vehicle air conditioning filter with high-efficiency protection function according to claim 1, characterized in that: The filter material assembly (20) is seamlessly bonded to the inner wall of the frame assembly (10) by hot melt adhesive.

7. A vehicle air conditioning filter with high-efficiency protection function according to claim 6, characterized in that: The filter material assembly (20) is folded in a pleated manner within the frame assembly (10).

8. A method for preparing a vehicle air conditioning filter with high-efficiency protection function according to any one of claims 1-7, characterized in that: The process includes the following steps: preparation of the air conditioning filter media assembly (20); post-processing of the filter media assembly (20); trial production and testing of the sample; adjustment of material parameters and processes based on the trial production and testing results; and packaging of the product after it is qualified.

9. The method for preparing a vehicle air conditioning filter with high-efficiency protection function according to claim 8, characterized in that: In the sample trial production, an automatic adjustable finishing agent coating production line was used for the finishing agent treatment of the skeleton layer (21), including adjustable liquid tank roller immersion height, automatic alignment material rack and load capacity digital display, and oven temperature range: 0-200 degrees.

10. The method for preparing a vehicle air conditioning filter with high-efficiency protection function according to claim 8, characterized in that: The sample tests include filter media resistance test, filtration performance test, and dust holding capacity test within the filter media assembly (20).

Images