Self-adaptive low-wind-resistance multifunctional air purification filter screen and application thereof

Abstract

The invention discloses a self-adaptive low-wind-resistance multifunctional air purification filter screen and application thereof, and belongs to the technical field of air purification. The filter screen comprises a functional filter area formed by a plurality of fold units, the fold cross section is in a wing-shaped streamline curve or organ type, and the core is that a gradient rigid shaping mechanism is arranged on the surface of the filter screen, so that the filter screen has the directional bending capacity, the overall shape can be kept stable, and the filter screen can be adaptively attached to the mounting surface to ensure sealing. Meanwhile, the accommodating cavity defined by the folds, the shaping mechanism and the selectable covering layer is integrally filled with an air conditioning material, so that integrated synchronous purification of the particulate matters, the gaseous pollutants and the odor is realized. The invention further discloses specific application of the filter screen serving as the wall-mounted air conditioner external self-adaptive external air conditioner filter screen, and tool-free quick mounting and dismounting by hands can be achieved by arranging the elastic clamping parts. The device has the advantages of ultralow wind resistance, efficient purification, stable structure, convenience in installation and high universality.

Description

Adaptive low-resistance multifunctional air purification filter and its application Technical Field

[0001] This invention relates to the field of air purification technology, specifically to a filter element for air purification equipment, air conditioning systems, fresh air systems or vehicle ventilation systems, and particularly to a low air resistance filter with an adaptive installation structure and an integrated purification function module. Background Technology

[0002] Wall-mounted air conditioners and air purifiers are widely used in modern life, and the performance of their core component, the air filter, directly affects air quality, energy consumption, and user experience. Currently, most commercially available wall-mounted air conditioners have built-in filters, but their function is mainly limited to intercepting larger particles such as hair and lint, resulting in limited filtration efficiency. Indoor air faces multiple pollution risks when circulated through an air conditioner: First, airflow disturbances cause secondary dust re-entrainment of fine particulate matter (such as PM2.5, pollen, and dust mite metabolites) deposited throughout the room; second, the humid environment inside the air conditioner easily makes traditional filters a breeding ground for microorganisms (such as bacteria and mold), forming biofilms that diffuse with the airflow; third, built-in filters cannot effectively remove gaseous pollutants such as formaldehyde and volatile organic compounds (VOCs). Currently, multi-functional air purification filters mainly face technical bottlenecks in three aspects: structure, performance, and installation. Regarding structure and performance, commercially available filters have inherent defects. To achieve multi-functional purification, multi-layered filters (such as HEPA filters and honeycomb activated carbon filters) are often used in series. This structure results in bulky equipment, increased air resistance, and higher energy consumption. Another mainstream technology, the "carbon cloth sandwich" composite filter, has a compact structure, but its manufacturing process is complex. The activated carbon particles are coated with adhesives, which significantly reduces the effective specific surface area, leading to a rapid decline in purification efficiency. Furthermore, it suffers from problems such as increased air resistance due to adhesive powder and the easy breakage of carbon particles, causing secondary pollution. In addition, the pleats of traditional filters are mostly "conical" or "rectangular," which are high-resistance shapes from a fluid dynamics perspective. The homogeneous pleated structure also easily leads to uneven airflow distribution, further increasing energy consumption and reducing filtration efficiency and lifespan.

[0003] In specific application scenarios, such as adding an external air purification filter to a wall-mounted air conditioner, the filter's ease of installation and compatibility (sealing) with different models of equipment are often poor, typically relying on additional clips or tools. For example, the solution disclosed in patent CN201310099675U relies on clips, screws, or guide rails for fixing, making the installation and disassembly process cumbersome, requiring tools, and resulting in a poor user experience. While the solution disclosed in patent CN215675505U attempts to simplify installation, its structural adaptability is insufficient, still requiring auxiliary fasteners, making it difficult to be universally applicable to different models and sizes of air conditioners, and causing inconvenience in maintenance.

[0004] Furthermore, existing filters often neglect airflow organization optimization in their structural design. While a homogeneous pleated structure increases the filtration area, it can easily lead to uneven airflow distribution, with excessively high wind speeds in the center of the return air vent and excessively low wind speeds at the edges. This not only increases wind resistance and air conditioning energy consumption but also reduces overall filtration efficiency and lifespan.

[0005] Therefore, there is an urgent need in this field for an innovative filter structure and installation solution that can fundamentally reduce wind resistance, simplify the production process, achieve multi-functional and efficient integration, and meet the requirements of convenient installation and wide compatibility. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an innovative, high-performance, adaptive, low-resistance, multi-functional air purification filter. This filter, through a combination of streamlined pleated design and gradient rigidity reinforcement structure, fundamentally reduces airflow resistance while giving the filter excellent shape stability and adaptive sealing capability of the mounting surface. It also innovatively utilizes the filter's own structure to form a functional material containment area, achieving a high degree of integration between particulate matter filtration and gaseous pollutant purification / odor regulation, and is easy to manufacture and install.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The technical solution of the present invention is implemented as follows: An adaptive low-resistance multifunctional air purification filter includes a filter body, the filter body including at least one functional filtration zone, the functional filtration zone being composed of multiple continuously arranged pleated units, the cross-section of the pleated units being an airfoil streamline curve or an accordion shape to optimize airflow and reduce wind resistance; on at least one surface of the functional filtration zone, at least one shaping mechanism is provided along the pleat extension direction, the shaping mechanism including at least two shaping components with different rigidity characteristics, forming a gradient rigidity structure, so that the functional filtration zone has the ability to directionally bend or maintain shape stability perpendicular to the airflow direction; that is, the side with higher rigidity... The filter body maintains its main shape, with the less rigid side adaptably slightly bent to fit irregular mounting surfaces. The filter body also includes at least one receiving chamber formed by the pleated unit, the shaping mechanism, and / or an additional covering layer, with air conditioning material disposed within the receiving chamber. Preferably, the shaping mechanism includes an upper shaping member disposed on the upper surface of the functional filtration area and a lower shaping member disposed on the lower surface. The rigidity of the upper shaping member is less than that of the lower shaping member, forming a gradient structure of "soft upper, hard lower." Preferably, the upper and lower shaping members are made of materials with different rigidities; or, the upper and lower shaping members are made of the same material, but the transverse cross-sectional dimension of the upper shaping member is smaller than that of the lower shaping member. The transverse cross-sectional dimensions of the shaping component; preferably, both the upper and lower shaping components are multiple rows of parallel linear components, with the distance between the outermost linear component and the corresponding side edge of the filter screen being 0-30 mm, preferably 5-25 mm; preferably, the shaping mechanism is integrally manufactured with the pleated unit through co-extrusion molding, hot melt bonding, or insert injection molding to ensure a firm connection; preferably, the additional covering layer is a mesh, non-woven fabric, or porous film, which covers the top and / or bottom of the functional filtration area, participates in forming the receiving chamber, and plays a pre-filtration or protective role; preferably, the air conditioning material includes gaseous pollutant purification components and / or odor regulating components; the gaseous pollutant purification components are activated carbon, impregnated active oxygen... The filter body comprises at least one of alumina, zeolite molecular sieve, and photocatalytic material; the odor regulating component is a slow-release fragrance particle or an odor neutralizer; preferably, the filter body further comprises an elastic clamping part located on at least one side of the functional filtration area, the elastic clamping part being composed of compressible and resilient pleats, used to achieve self-stabilization and fixation of the filter body in the installation position through its own deformation and rebound force, the filter body being clamped in the installation gap directly above the return air vent of the wall-mounted air conditioner through its own deformation and rebound force, the installation gap being located between the air conditioner mounting wall and the upper edge of the front cover of the air conditioner body; preferably, the filter body is an integrally formed modular structure, and the user can complete the installation and disassembly by manually compressing the elastic clamping part without any tools;An air purification device includes a housing, a fan, and a filter unit, wherein the filter unit comprises the aforementioned adaptive low-resistance air purification filter.

[0008] The beneficial effects of this invention are as follows: It features ultra-low wind resistance and high energy efficiency. The airfoil-shaped streamlined pleats or accordion-style pleats greatly optimize aerodynamic performance, reducing system operating energy consumption and noise. The structure is stable and self-adaptive; the gradient rigid shaping mechanism ensures the overall stability of the filter's shape while giving it excellent adaptive bending ability, allowing it to closely fit different curvatures or inclined installation surfaces, providing strong adaptability and versatility. It integrates multiple functions, innovatively utilizing the pleated structure and shaping mechanism to form a built-in chamber to hold functional materials. The process is simple, avoiding the defects of the carbon cloth sandwich process, making multifunctional purification efficient and durable. Installation is extremely convenient; combined with the elastic clamping part design, it achieves a tool-free installation experience of "place and secure, pick and remove," particularly suitable for consumer-grade scenarios. It is modular and highly expandable; the structure is easy to modularly produce, and by changing the functional materials in the chamber or adjusting the rigidity of the shaping mechanism, it can flexibly adapt to different purification needs and installation environments. Attached Figure Description

[0009] Figure 1 is an overall schematic diagram of the filter structure of Embodiment 2 of the present invention; Figure 2 is a cross-sectional schematic diagram of the filter structure of Embodiment 2 of the present invention; Figure 3 is an assembly axial side schematic diagram of Embodiment 1 of the present invention; Figure 4 is an assembly side view schematic diagram of Embodiment 1 of the present invention; Figure 5 is a side view schematic diagram of Embodiment 1 of the present invention; Figure 6 is an upper axial side schematic diagram of Embodiment 1 of the present invention; Figure 7 is a lower axial side schematic diagram of Embodiment 1 of the present invention; Figure 8 is a longitudinal cross-sectional schematic diagram of Embodiment 1 of the present invention; Figure 9 is an upper axial side schematic diagram of Embodiment 1 of the present invention.

[0010] Parts Description: 1. Filter body; 11. Pleated unit; 12. Elastic clamping part; 13. Elastic clamping part; 14. Upper shaping component; 15. Lower shaping component; 16. Additional covering layer; 17. Air conditioning functional material; 2. Mounting wall surface; 3. Wall-mounted air conditioner body; 31. Return air vent; 32. Upper edge of the air conditioner front cover. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments described are only for explaining the present invention and are not intended to limit it.

[0012] The core of the adaptive low-resistance multi-functional air purification filter lies in the fact that the filter body 1 includes at least one functional filtration area composed of pleated units. The cross-section of the pleated unit 11 is in the shape of an airfoil streamline curve or an accordion shape, which can significantly guide the airflow to pass smoothly and reduce wind resistance.

[0013] A sizing mechanism with gradient rigidity is provided on the surface of the functional filtration zone. For example, upper and lower sizing components 14 and 15 with different rigidities are provided on the upper and lower surfaces respectively (e.g., softer upper and harder lower). Both the upper and lower sizing components are multiple rows of parallel linear components, with the distance between the outermost linear component and the corresponding edge of the filter screen being 30 mm. This design gives the filter screen "directional flexibility" in the direction perpendicular to the airflow: the side with higher rigidity can maintain its main shape and conform to the equipment housing, while the side with lower rigidity can bend adaptively to ensure a seal with the mounting surface, greatly improving the filter screen's adaptability to different curvatures or inclined mounting surfaces. The space between the pleated unit 11, the sizing components, and the optional additional covering layer 16 (such as mesh or non-woven fabric) is used to enclose and form a closed or semi-closed receiving chamber. These chambers can be used to directly fill or encapsulate air conditioning materials 17, such as activated carbon, formaldehyde removal catalysts, fragrances, etc. As air flows through the pleats to filter particulate matter, it also comes into full contact with the functional materials inside the chamber, achieving purification of gaseous pollutants and odor regulation, thus achieving the goal of "one filter, multiple effects".

[0014] The filter screen can also be provided with elastic clamping parts 12, 13 made of compressible pleats at one or both ends. Utilizing the deformation and rebound force of these parts, the filter screen can be firmly snapped into the target position (such as the gap between the air conditioner and the wall) like a clamp, realizing truly quick installation and removal by hand without any tools or auxiliary parts.

[0015] Example 1: Adaptive External Wall-Mounted Air Conditioner Filter This example describes the application of a filter as an external wall-mounted air conditioner filter. Referring to Figures 3-9, the filter body 1 includes a central functional filtration zone (composed of accordion-style pleated units 11) and elastic clamping portions 12 and 13 at the left and right ends. The upper surface of the functional filtration zone is provided with a linear upper shaping member 14 co-extruded from a flexible material (such as TPE or others), and the lower surface is provided with a linear lower shaping member 15 formed from a rigid material (such as PP or others), forming a "soft on top, hard on bottom" structure. Both the upper and lower shaping members are multiple rows of parallel linear members, with the distance between the outermost linear member and the corresponding side edge of the filter being 25 mm. A layer of nylon mesh 16 covers the top of the functional filtration zone. This mesh 16, the upper shaping member 14, and the side walls of the adjacent accordion-style pleated units 11 together form multiple continuous strip-shaped receiving chambers. These chambers are filled with a mixture of granular activated carbon and zeolite molecular sieves as air conditioning material 17, which is used to adsorb VOCs such as formaldehyde and toluene, as well as odors.

[0016] During installation, the user manually compresses the elastic clamping parts 12 and 13 on both sides and inserts them into the gap between the wall 2 above the air conditioner return air vent 31 and the air conditioner housing. After releasing, the clamping parts automatically lock in place due to their elasticity. At this time, the upper shaping component 14 with lower rigidity and the mesh 16 follow the lower shaping component 15 with higher rigidity and bend slightly to make the entire filter fit against the housing of the air conditioner return air vent. Air enters from the air conditioner return air vent, passes through the accordion-style pleated unit 11, passes through the mesh, and comes into contact with the functional material 17, thus purifying gaseous pollutants.

[0017] Example 2: Universal Low-Resistance Multifunctional Filter This example describes the application of the filter as a filter in a stand-alone air purification device. Referring to Figures 1-2, the filter body is a square plate structure, entirely composed of functional filtration zones (airfoil pleated units 11), without edge elastic clamping parts. Multiple rows of hot melt adhesive strips are provided on the upper and lower surfaces of the functional filtration zones as shaping mechanisms, with the adhesive strips on the upper surface having a thinner diameter (lower rigidity) and the adhesive strips on the lower surface having a thicker diameter (higher rigidity). The filter is covered with coarse non-woven fabric on both the upper and lower surfaces as a pre-filter and additional covering layer 16, forming an internal chamber with the pleats and adhesive strips. The chamber is filled with modified material particles (for catalytic decomposition of harmful gases such as formaldehyde) and slow-release fragrance particles. This filter can be embedded in standard air purifier equipment. The airfoil pleated unit 11 has an airfoil-shaped streamlined pleat, which greatly optimizes aerodynamic performance and reduces system operating energy consumption and noise. Example 3: Cylindrical Expandable Filter This example shows another form of filter. The filter body 1 is cylindrical, composed of a single layer of airfoil pleated units 11. Annular upper and lower shaping components (14, 15) are respectively installed on the inner and outer sides of the cylinder wall. They are made of the same material, but the inner component has a thicker cross-section (higher rigidity). An irregular mesh cover 16 is placed over the cylinder as an additional covering layer, forming an annular cavity with the pleats and shaping components, filled with photocatalyst-coated ceramic particles or modified materials. This filter can be used in multiple parallel or series connections, suitable for large air ducts or industrial applications. Its gradient rigidity structure ensures the cylinder maintains its roundness under radial pressure; the high rigidity on the inner side ensures compatibility with the central support structure, while the low rigidity on the outer side allows for connection to pipes of different diameters.

[0018] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adaptive low-resistance multifunctional air purification filter, comprising a filter body (1), wherein the filter body (1) includes at least one functional filtration zone, characterized in that, The functional filtration zone is composed of multiple continuously arranged pleated units (11). The cross-section of the pleated unit (11) is an airfoil-shaped streamline curve or an accordion shape. On at least one surface of the functional filtration zone, at least one shaping mechanism is provided along the pleat extension direction. The shaping mechanism includes at least two shaping components with different rigidity characteristics to form a gradient rigidity structure so that the functional filtration zone has the ability to bend in a directional manner or maintain a stable shape in a direction perpendicular to the airflow. The filter body (1) also includes at least one receiving chamber formed by the pleated unit (11), the shaping mechanism and / or the additional covering layer (16). The receiving chamber is provided with air conditioning material (17).

2. The adaptive low-resistance multifunctional air purification filter as described in claim 1, characterized in that... The shaping mechanism includes an upper shaping member (14) disposed on the upper surface of the functional filter area and a lower shaping member (15) disposed on the lower surface. The rigidity of the upper shaping member (14) is less than that of the lower shaping member (15).

3. The adaptive low-resistance multifunctional air purification filter as described in claim 2, characterized in that... The upper shaping member (14) and the lower shaping member (15) are made of materials with different rigidities; or, the upper shaping member (14) and the lower shaping member (15) are made of the same material, but the transverse cross-sectional dimension of the upper shaping member (14) is smaller than that of the lower shaping member (15).

4. The adaptive low-resistance multifunctional air purification filter as described in claim 2 or 3, characterized in that... The upper shaping component (14) and the lower shaping component (15) are both linear components arranged in multiple rows in parallel. The distance between the outermost linear component and the corresponding side edge of the filter screen is 0 to 30 mm.

5. The adaptive low-resistance multifunctional air purification filter as described in claim 1, characterized in that... The shaping mechanism is integrally manufactured with the pleated unit (11) through co-extrusion molding, hot melt bonding or insert injection molding process.

6. The adaptive low-resistance multifunctional air purification filter as described in claim 1, characterized in that... The additional covering layer (16) is a mesh, non-woven fabric or porous film, which covers the top and / or bottom of the functional filtration area and participates in forming the receiving chamber.

7. The adaptive low-resistance multifunctional air purification filter as described in claim 1, characterized in that... The air conditioning material (17) includes a gaseous pollutant purification component and / or an odor regulating component; the gaseous pollutant purification component is at least one of activated carbon, impregnated activated alumina, zeolite molecular sieve, and photocatalytic material; the odor regulating component is a slow-release fragrance particle or an odor neutralizer.

8. The adaptive low-resistance multifunctional air purification filter as described in claim 1, characterized in that... The filter body (1) also includes an elastic clamping part (12, 13) located on at least one side of the functional filtration area. The elastic clamping part is composed of compressible and resilient pleats, which are used to achieve self-stabilization and fixation of the filter in the installation position through deformation and rebound force. The filter body (1) is clamped in the installation gap directly above the return air inlet (31) of the wall-mounted air conditioner through its own deformation and rebound force. The installation gap is located between the air conditioner mounting wall (2) and the upper edge (32) of the air conditioner front cover.

9. The adaptive low-resistance multifunctional air purification filter as described in claim 8, characterized in that, The filter body (1) is a modular structure formed in one piece, which can be installed and disassembled by manually compressing the elastic clamping parts (12, 13).

10. An air purification device, comprising a housing, a fan, and a filter unit, characterized in that, The filtration unit comprises an adaptive low-resistance air purification filter as described in any one of claims 1-9.

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