Air filter element

Abstract

The utility model discloses an air filter element which comprises four frames, four corner connectors and filter screen cloth, the four frames are sequentially connected end to end to form a closed rectangular frame, the four corner connectors are respectively arranged at the corner positions of the rectangular frame, each corner connector is used for connecting two adjacent frames, and the filter screen cloth is arranged in the rectangular frame. And the filter screen cloth is arranged in the rectangular frame. Therefore, the closed rectangular frame is formed by connecting the four frames end to end, the four corner connectors are used for connection and reinforcement at the corner positions of the rectangular frame, and the stability and durability of the whole air filter element structure are enhanced in cooperation with the internal filter screen cloth, so that the filter screen cloth can be better unfolded and kept in the form, and the filtering efficiency of the filter screen cloth is improved; the service life of the air filter element is prolonged, the air filter element is convenient to maintain and replace, and the application requirements of different occasions, especially occasions with high requirements for air quality are met.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to air filter elements. Background Technology

[0002] In modern industrial production and daily life, the application of air filtration technology is becoming increasingly widespread and crucial. As the core component of the air filtration system, the performance and structure of the air filter element directly affect the effect and quality of air filtration.

[0003] Traditional air filter technologies have shown their own characteristics and limitations in the process of continuous development. For example, fiber air filters can effectively capture tiny particles in the air due to their large specific surface area and rich pore structure. However, as the usage time increases, the fibers are prone to agglomeration and caking, which leads to a sharp increase in filtration resistance and a significant reduction in airflow rate. This not only increases energy consumption but also shortens the service life of the air filter.

[0004] Plate-type air filters have a relatively simple structure and low manufacturing cost, and are used in some applications where filtration requirements are not high. However, their filtration area is limited, making it difficult to meet the needs of high-concentration pollutants or fine filtration. Their filtration efficiency is low, and they cannot effectively remove fine particulate matter and harmful gases from the air.

[0005] In industrial fields, such as electronic chip manufacturing workshops, the requirements for air quality are extremely high. Even trace amounts of particulate impurities can cause short circuits or performance degradation in chips. Traditional air filters are unable to reliably provide the required ultra-clean air.

[0006] Therefore, in order to meet the diverse needs of different fields for air filtration and further improve air quality, it is of practical significance to develop a new type of air filter element with high filtration performance, good structural stability, long life and easy maintenance. Utility Model Content

[0007] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0008] Therefore, one objective of this utility model is to propose an air filter element that forms a closed rectangular frame by connecting four side frames end to end, and reinforces the rectangular frame with four corner brackets at the corners. Combined with the internal filter mesh, this enhances the stability and durability of the entire air filter element structure, allowing the filter mesh to unfold better and maintain its shape, thereby improving the filtration efficiency of the filter mesh. This not only extends the service life of the air filter element but also facilitates maintenance and replacement, meeting the application needs of different occasions, especially those with high air quality requirements.

[0009] To achieve the above objectives, a first aspect of this utility model provides an air filter element, comprising: four frames, four corner brackets, and a filter cloth, wherein,

[0010] The four borders are connected end to end to form a closed rectangular frame. The four corner brackets are respectively set at the corners of the rectangular frame. Each corner bracket is used to connect two adjacent borders. The filter cloth is set inside the rectangular frame.

[0011] According to the embodiment of this utility model, the air filter element forms a closed rectangular frame by connecting the four edges end to end, and is reinforced by connecting the four corner brackets at the corners of the rectangular frame. Together with the internal filter cloth, it enhances the stability and durability of the entire air filter element structure, allowing the filter cloth to unfold better and maintain its shape, improving the filtration efficiency of the filter cloth. This not only extends the service life of the air filter element, but also facilitates maintenance and replacement, meeting the application needs of different occasions, especially those with high requirements for air quality.

[0012] In addition, the air filter element proposed according to the above embodiments of this utility model may also have the following additional technical features:

[0013] As one possibility, the frame is provided with a long strip-shaped main body, and a side plate is provided on each of the two sides of the main body. The main body and the side plate are perpendicular. A first sliding groove is provided at the connection between one side of the main body and the side plate, and a second sliding groove is provided at the connection between the other side of the main body and the side plate. Limiting holes are provided on the main body.

[0014] As one possibility, a slide rail is provided at the side edge of the corner bracket, an elastic sheet is provided on the corner bracket, and a limiting block is provided on the elastic sheet. When the corner bracket connects two adjacent frames, the slide rail is locked in the first slide groove, and the elastic sheet pushes the limiting block to lock in the limiting hole.

[0015] As one possibility, the filter cloth is wavy and folded, and a support plate is provided on each of the two sides of the filter cloth. When the filter cloth is placed in the rectangular frame, the support plate is placed on an adjacent frame, and the edge of the support plate is engaged in the second groove.

[0016] As one possibility, the main body and the two sides are integrally formed.

[0017] As one possibility, the corner bracket is provided with reinforcing ribs.

[0018] As one possibility, a reinforcing plate is provided at the bend of the corner bracket.

[0019] As one possibility, the filter cloth and the support plate are bonded together.

[0020] As an option, at least one of the two sides of the filter cloth may be provided with a metal mesh.

[0021] As an option, at least one of the two sides of the filter cloth is provided with a limiting band, the two ends of the limiting band are respectively connected to the two support plates, and the main body of the limiting band is connected to the folds of the filter cloth.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The additional aspects and advantages of this utility model described above will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of an air filter element according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the frame structure according to an embodiment of the present invention;

[0026] Figure 3 This is an enlarged view of part A of the border of one embodiment of the present utility model;

[0027] Figure 4 This is a cross-sectional view of the frame of one embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the structure of a corner bracket according to an embodiment of the present invention. Figure 1 ;

[0029] Figure 6 This is a schematic diagram of the structure of a corner bracket according to an embodiment of the present invention. Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the structure of a corner bracket according to an embodiment of the present invention. Figure 3 ;

[0031] Figure 8 This is a schematic diagram of the structure of a corner bracket according to an embodiment of the present invention. Figure 4 ;

[0032] Figure 9 This is a schematic diagram of the structure of the filter cloth according to an embodiment of the present invention.

[0033] As shown in the figure:

[0034] 1-Border;

[0035] 11-Main body, 12-Side plate, 13-First slide groove, 14-Second slide groove, 15-Limiting hole.

[0036] 2-Corner code;

[0037] 21-Slide rail, 22-Elastic sheet, 23-Limit block, 24-Reinforcing rib, 25-Reinforcing plate;

[0038] 3-Filter cloth;

[0039] 31-Support plate, 32-Metal mesh, 33-Limiting band. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] The air filter element of this utility model according to the following embodiment is described with reference to the accompanying drawings.

[0042] Example 1

[0043] like Figure 1 As shown, the air filter element includes: four frame pieces 1, four corner brackets 2, and a filter cloth 3, wherein,

[0044] The four borders 1 are connected end to end to form a closed rectangular frame. The four corner brackets 2 are respectively set at the corners of the rectangular frame. Each corner bracket 2 is used to connect two adjacent borders 1. The filter cloth 3 is set inside the rectangular frame.

[0045] In this embodiment of the utility model, the overall structure of the air filter is designed to address the shortcomings of existing air filters in terms of stability, filtration efficiency, and ease of maintenance. The four side frames 1 are connected end to end to form a rectangular frame. This structure provides a basic support frame for the entire air filter, ensuring its shape stability. The four corner brackets 2 are connected and reinforced at the corners of the rectangular frame, further enhancing the stability of the frame and preventing deformation during use. The filter cloth 3 is set inside the rectangular frame. Through the combined action of the side frames 1 and the corner brackets 2, it can be better unfolded and maintain its shape, thereby improving filtration efficiency.

[0046] It should be noted that the frame 1, as the main supporting part of the air filter, has a significant impact on the performance of the entire air filter. The length, width, and thickness of the frame 1 can be customized according to actual application requirements. For example, in situations where space is limited but filtration efficiency is required, the height of the frame 1 can be appropriately increased to accommodate more folded filter cloth 3, thereby increasing the filtration area. The shape and size of the corner bracket 2 are adapted to the frame 1, and its material can be plastic or metal with certain strength and toughness to ensure the firmness of the connection. The material of the filter cloth 3 can be selected according to the different filtering objects. For example, high-efficiency HEPA filter paper can be used for filtering fine particulate matter, and activated carbon fiber filter paper can be used for filtering harmful gases.

[0047] According to the air filter element disclosed in this utility model, a closed rectangular frame is formed by connecting four side frames 1 end to end, and four corner brackets 2 are used to connect and reinforce the corners of the rectangular frame. Together with the internal filter cloth 3, the stability and durability of the entire air filter element structure are enhanced. The filter cloth 3 can be better unfolded and maintain its shape, improving the filtration efficiency of the filter cloth 3. This not only extends the service life of the air filter element, but also facilitates maintenance and replacement, meeting the application needs of different occasions, especially those with high requirements for air quality.

[0048] Example 2

[0049] To better explain this utility model, in one embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 4 As shown, the frame 1 is provided with a long strip-shaped main body 11, and a side plate 12 is provided on each of the two sides of the main body 11. The main body 11 and the side plate 12 are perpendicular to each other. A first groove 13 is provided at the connection between one side of the main body 11 and the side plate 12, and a second groove 14 is provided at the connection between the other side of the main body 11 and the side plate 12. A limit hole 15 is provided on the main body 11.

[0050] In this embodiment of the utility model, the structural design of the frame 1 makes its assembly process simpler and more stable. The vertical structure of the main body 11 and the side plate 12 increases the structural strength of the frame 1, enabling it to withstand greater external forces without easily deforming. The first slide groove 13 and the second slide groove 14 provide a convenient connection method for the installation of the corner bracket 2 and the filter cloth 3. Through the cooperation with the slide rail 21 on the corner bracket 2 and the edge of the support plate 31 of the filter cloth 3, the precise positioning and connection between the components are realized. The limiting hole 15 cooperates with the limiting block 23 on the corner bracket 2 to further ensure the stability of the frame 1 after it is connected to the corner bracket 2 and prevent the corner bracket 2 from shifting during use.

[0051] It should be noted that the length of the main body 11 can be determined according to the design dimensions of the air filter element. Its width and thickness should ensure sufficient strength to support the filter cloth 3 and withstand the pressure during the filtration process. The height of the side plate 12 can be adjusted as needed. For example, when it is necessary to increase the number of folded layers of the filter cloth 3, the height of the side plate 12 can be appropriately increased. The depth and width of the first slide groove 13 and the second slide groove 14 should match the slide rail 21 of the corner bracket 2 and the edge dimensions of the support plate 31 of the filter cloth 3 to ensure smooth sliding and tight connection. The diameter of the limiting hole 15 is slightly larger than the size of the limiting block 23 so that the limiting block 23 can be smoothly inserted and locked under the action of the elastic piece 22 during installation.

[0052] Example 3

[0053] To better explain this utility model, in one embodiment of this utility model, such as Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a slide rail 21 is provided at the side edge of the corner code 2, an elastic piece 22 is provided on the corner code 2, and a limiting block 23 is provided on the elastic piece 22. When the corner code 2 connects two adjacent frame 1, the slide rail 21 is locked in the first slide groove 13, and the elastic piece 22 pushes the limiting block 23 to be locked in the limiting hole 15.

[0054] In this embodiment of the utility model, the structural design of the corner bracket 2 enables a quick and stable connection with the frame 1. The cooperation between the slide rail 21 and the first slide groove 13 allows the corner bracket 2 to slide smoothly along the side of the frame 1 during installation and be accurately positioned at the corner. The design of the elastic sheet 22 and the limiting block 23 provides a reliable locking mechanism. After the corner bracket 2 is installed in place, the elastic force of the elastic sheet 22 pushes the limiting block 23 into the limiting hole 15 to prevent the corner bracket 2 from loosening or falling off due to external force. The setting of the reinforcing rib 24 and the reinforcing plate 25 further enhances the structural strength of the corner bracket 2, enabling it to withstand greater tension and pressure, and improving the stability of the entire air filter structure.

[0055] It should be noted that the length of the slide rail 21 should be adapted to the length of the side plate 12 of the frame 1 to ensure that it can be fully embedded in the first slide groove 13 during the connection process. The material of the elastic sheet 22 should have good elasticity and durability, such as stainless steel spring sheet. The shape of the limiting block 23 can be designed as hemispherical or square, etc., to facilitate smooth insertion into the limiting hole 15 and clamping during installation. The number and distribution of the reinforcing ribs 24 can be optimized according to the size of the corner bracket 2 and the stress condition. For example, the number or thickness of the reinforcing ribs 24 can be increased in the parts with greater stress. The reinforcing plate 25 can be set on the inside or outside of the bend of the corner bracket 2 to enhance the bending strength of the bend.

[0056] Example 4

[0057] To better explain this utility model, in one embodiment of this utility model, such as Figure 9 As shown, the filter cloth 3 is wavy and folded. A support plate 31 is provided on each of the two sides of the filter cloth 3. When the filter cloth 3 is set in the rectangular frame, the support plate 31 is set on an adjacent frame 1, and the edge of the support plate 31 is stuck in the second slide groove 14.

[0058] At least one of the two sides of the filter cloth 3 is provided with a metal mesh 32, and at least one of the two sides of the filter cloth 3 is provided with a limiting band 33. The two ends of the limiting band 33 are respectively connected to two support plates 31, and the main body of the limiting band 33 is connected to the folds of the filter cloth 3.

[0059] In this embodiment of the utility model, the wave-folded design of the filter cloth 3 greatly increases its filtration area and improves filtration efficiency. The support plate 31 provides support for the filter cloth 3, enabling it to maintain its wave shape during filtration and preventing deformation or collapse of the filter cloth 3 due to airflow impact, thereby ensuring a stable filtration effect. The metal mesh 32 enhances the strength of the filter cloth 3, preventing it from being torn or damaged during installation or use. It also helps to evenly distribute airflow and improve the filtration effect. The limiting band 33 further fixes the shape of the filter cloth 3, preventing it from wrinkling or shifting during use.

[0060] It should be noted that the folding method and number of folds of the filter cloth 3 can be adjusted according to actual needs. For example, in cases where high filtration accuracy is required, the number of folds can be increased to increase the filtration area. The material of the support plate 31 can be lightweight and high-strength plastic or aluminum alloy, etc. Its thickness and width should be determined according to the size and strength requirements of the filter cloth 3. The pore size of the metal mesh 32 should be selected according to the filtration object to ensure that it can enhance the strength without affecting the filtration effect. The material of the limiting band 33 can be rubber or fiber band with a certain elasticity, etc. Its width and thickness should be moderate so as to effectively fix the folds of the filter cloth 3 without causing excessive resistance to the airflow.

[0061] It should also be noted that for general air purification, ordinary non-woven fabric can be used, which is low in cost and can meet basic filtration needs. However, in places with extremely high air quality requirements, such as medical operating rooms and laboratories, filter cloth 3 made of nanofiber material can be used. It has higher filtration precision and can effectively filter out smaller particles, ensuring that the air quality reaches high standards and further improving the applicability of air filter in different scenarios.

[0062] In addition, the main body 11 and the two sides are integrally formed, the corner bracket 2 is provided with reinforcing ribs 24, the corner bracket 2 is provided with reinforcing plates 25 at the bends, and the filter cloth 3 and the support plate 31 are bonded together.

[0063] Finally, it should be noted that in the actual production process, firstly, according to the design requirements of the air filter element, the four frame pieces 1 must be precisely prepared to ensure the dimensional accuracy of the main body 11 and the side plate 12, as well as the processing quality of the first slide groove 13, the second slide groove 14, and the limiting hole 15. Next, the filter cloth 3, which is wavy and folded and has a support plate 31, is inserted into the second slide groove 14 with the edge of the support plate 31 to ensure that the metal mesh 32 and the limiting band 33 are installed correctly. Then, the slide rail 21 of the corner bracket 2 is aligned with the first slide groove 13 of the frame piece 1, slid in, and the limiting block 23 on the elastic sheet 22 is inserted into the limiting hole 15 to complete the assembly of the four frame pieces 1 and the four corner brackets 2, forming a stable rectangular frame. Finally, the air filter element is manufactured. The entire process requires strict quality control to ensure the excellent performance of the air filter element.

[0064] In summary, the air filter element disclosed in this utility model forms a closed rectangular frame by connecting four side frames 1 end to end, and reinforces the rectangular frame with four corner brackets 2 at the corners. Combined with the internal filter cloth 3, it enhances the stability and durability of the entire air filter element structure, allowing the filter cloth 3 to unfold better and maintain its shape, improving the filtration efficiency of the filter cloth 3. This not only extends the service life of the air filter element, but also facilitates maintenance and replacement, meeting the application needs of different occasions, especially those with high air quality requirements.

[0065] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0067] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0068] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An air filter element, characterized in that, include: Four borders, four corner brackets, and a filter cloth, among which, The four borders are connected end to end to form a closed rectangular frame. The four corner brackets are respectively set at the corners of the rectangular frame. Each corner bracket is used to connect two adjacent borders. The filter cloth is set inside the rectangular frame.

2. The air filter element according to claim 1, characterized in that, The frame has a long strip-shaped main body, and a side plate is provided on each of the two sides of the main body. The main body and the side plates are perpendicular. A first sliding groove is provided at the connection between one side of the main body and the side plate, and a second sliding groove is provided at the connection between the other side of the main body and the side plate. Limiting holes are provided on the main body.

3. The air filter element according to claim 2, characterized in that, A slide rail is provided at the side edge of the corner bracket, and an elastic sheet is provided on the corner bracket. A limit block is provided on the elastic sheet. When the corner bracket is connected to two adjacent frames, the slide rail is locked in the first slide groove, and the elastic sheet pushes the limit block to lock in the limit hole.

4. The air filter element according to claim 2, characterized in that, The filter cloth is wavy and folded, and a support plate is provided on each of the two sides of the filter cloth. When the filter cloth is placed in the rectangular frame, the support plate is placed on an adjacent frame, and the edge of the support plate is locked in the second groove.

5. The air filter element according to claim 2, characterized in that, The main body and the two sides are integrally formed.

6. The air filter element according to claim 3, characterized in that, The corner bracket is equipped with reinforcing ribs.

7. The air filter element according to claim 3, characterized in that, The corner bracket is reinforced with a reinforcing plate at the bend.

8. The air filter element according to claim 4, characterized in that, The filter cloth and the support plate are bonded together.

9. The air filter element according to claim 4, characterized in that, At least one of the two sides of the filter cloth is provided with a metal mesh.

10. The air filter element according to claim 4, characterized in that, A limiting band is provided on at least one of the two sides of the filter cloth. The two ends of the limiting band are respectively connected to the two support plates. The main body of the limiting band is connected to the folds of the filter cloth.

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