Filter element fixing device applied to air purifier
By combining the support components and the limiting frame, the problems of filter movement and inconvenient installation and disassembly are solved, achieving stable positioning and easy disassembly of the filter, thus improving the performance and maintenance efficiency of the air purifier.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING HENGJIANLUN TECH COMMERCIAL CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-14
AI Technical Summary
Existing air purifier filters are prone to shaking during use and are inconvenient to install and remove, affecting performance and maintenance costs.
The design employs a support component and a limiting frame, and through the combination of connecting blocks, connecting screws, and positioning screws, it achieves stable positioning and convenient disassembly of the filter element.
This improves the stability of filter cartridge use and ease of disassembly, ensuring stable air purification performance and simple maintenance.
Smart Images

Figure CN224121391U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purifier technology, and in particular to a filter element fixing device used in air purifiers. Background Technology
[0002] Air purifiers play a vital role in improving indoor air quality. As a core component of air purifiers, the stability of the filter and the ease of replacement directly affect the performance and maintenance costs of the air purifier. Existing filters used in air purifiers have at least the following drawbacks: 1. Existing filters are not securely positioned, making them prone to shaking during use; 2. Existing filters are cumbersome to install and remove. Therefore, we are introducing a new filter fixing device for air purifiers. Utility Model Content
[0003] The main purpose of this invention is to provide a filter element fixing device for air purifiers, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A filter element fixing device for an air purifier includes a support assembly. Two positioning blocks are fixedly connected to the lower left and lower right ends of the support assembly. Limiting frames are sleeved on the upper left and upper right ends of the support assembly. A filter element assembly is inserted through the middle of the upper end of the support assembly, and the filter element assembly is inserted through the two limiting frames. Connecting blocks are fixedly connected to the lower front and lower rear sides of the outer surface of the filter element assembly. Connecting screw holes are opened at the upper ends of the two connecting blocks. Two connecting screws are inserted through the upper ends of the two limiting frames.
[0006] The support assembly includes a support plate with a circular groove in the middle of the upper part of the support plate. A connecting groove is formed in the lower wall of the circular groove. Support rods are fixedly connected to the four corners of the upper part of the support plate. Each of the four support rods has a screw groove at its upper end. Positioning screws are inserted and connected to the left and right sides of the upper part of the support plate. The support plate is sleeved with the filter element assembly.
[0007] Preferably, the support plate has connecting grooves at both the front and rear of its upper end, and movable grooves are provided on the left and right sides of the inner wall of the circular groove, with the two movable grooves respectively communicating with the two connecting grooves.
[0008] Preferably, the filter element assembly includes a filter element body, an upper fixing ring is fixedly connected to the upper part of the outer surface of the filter element body, a lower fixing ring is fixedly connected to the lower part of the outer surface of the filter element body, a filter structure is inserted and connected to the upper end of the filter element body, and the lower fixing ring is inserted and connected to a support plate.
[0009] Preferably, the filter structure includes a frame, a connecting pipe is fixedly connected to the lower end of the frame, a support rod is fixedly connected to the left and right sides of the lower inner frame wall, three filter screens are sleeved on the outer surfaces of the two support rods, and a second positioning block is fixedly connected to the upper left and upper right sides of the outer surface of the frame, and the frame is interlocked with the filter element body.
[0010] Preferably, the two connecting blocks are respectively interlocked with the two connecting slots.
[0011] Preferably, both positioning screws pass through the support plate and are interlocked with the two connecting blocks.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. By setting up a support assembly and a filter element assembly, two connecting blocks are set on the filter element assembly, and two connecting slots and two movable slots are set on the support assembly. By rotating the angle of the filter element assembly, the two connecting blocks are respectively inserted into the two movable slots, and two positioning screws are respectively inserted into the two connecting blocks through the support plate. The position of the filter element assembly can be positioned to prevent the filter element assembly from shaking during use.
[0014] 2. By setting two limiting frames, the two limiting frames are respectively connected to the two support rods on the left and the two support rods on the right. The two connecting screws on the left and the two connecting screws on the right pass through the two limiting frames and are threaded into the four screw grooves. The position of the two limiting frames can be positioned. The connection between the two limiting frames and the support components is easy to install and disassemble, which facilitates the disassembly and replacement of the filter element assembly and improves flexibility. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of a filter element fixing device applied to an air purifier according to the present invention;
[0016] Figure 2 This is a schematic diagram of the filter element assembly connection of a filter element fixing device applied to an air purifier according to the present invention;
[0017] Figure 3 This is a schematic diagram of the overall structure of a support assembly for a filter element fixing device applied to an air purifier according to the present invention;
[0018] Figure 4 This is a schematic diagram of the overall structure of a filter element fixing device for an air purifier according to the present invention.
[0019] In the diagram: 1. Support assembly; 2. Positioning block 1; 3. Limiting frame; 4. Connecting screw; 5. Filter element assembly; 6. Connecting block; 7. Connecting screw hole; 11. Support plate; 12. Circular groove; 13. Connecting groove; 14. Support rod; 15. Screw groove; 16. Connecting groove; 17. Movable groove; 18. Positioning screw; 51. Filter element body; 52. Lower fixing ring; 53. Filter structure; 54. Upper fixing ring; 531. Frame; 532. Connecting pipe; 533. Support rod; 534. Filter screen; 535. Positioning block 2. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Please see Figures 1-4 This utility model provides a technical solution:
[0024] A filter element fixing device for an air purifier includes a support assembly 1. Two positioning blocks 2 are fixedly connected to the lower left and lower right ends of the support assembly 1. Limiting frames 3 are sleeved on the upper left and upper right ends of the support assembly 1. A filter element assembly 5 is inserted through the middle of the upper end of the support assembly 1, and the filter element assembly 5 is inserted through the two limiting frames 3. Connecting blocks 6 are fixedly connected to the lower front side and the lower rear side of the outer surface of the filter element assembly 5. Connecting screw holes 7 are opened on the upper ends of the two connecting blocks 6. Two connecting screws 4 are inserted through the upper ends of the two limiting frames 3.
[0025] In this embodiment, the support assembly 1 includes a support plate 11. A circular groove 12 is formed in the middle of the upper end of the support plate 11. A connecting groove 13 is formed in the lower wall of the circular groove 12. Support rods 14 are fixedly connected to the four corners of the upper end of the support plate 11. Each of the four support rods 14 has a screw groove 15 at its upper end. Positioning screws 18 are inserted and connected to the left and right sides of the upper end of the support plate 11. The support plate 11 is sleeved with the filter element assembly 5. Connecting grooves 16 are formed in the front and rear of the upper end of the support plate 11. Movable grooves 17 are formed in the left and right sides of the inner wall of the circular groove 12. The two movable grooves 17 are respectively connected to the two connecting grooves 16. Two connecting blocks 6 are respectively inserted and connected to the two connecting grooves 16. The two positioning screws 18 are respectively inserted and connected to the two connecting blocks 6 through the support plate 11.
[0026] The above scheme involves supporting the filter element assembly 5 with the support component 1, connecting the two limiting frames 3 to the two support rods 14 on the left and the two support rods 14 on the right, and then connecting the two connecting screws 4 on the left and the two connecting screws 4 on the right through the two limiting frames 3 and threadedly connecting to the four screw grooves 15 to fix the connection between the two limiting frames 3 and the support component 1, thereby improving stability. The connection between the two limiting frames 3 and the support component 1 is easy to install and disassemble, facilitating the disassembly and maintenance of the filter element assembly 5. The circular groove 12 can support and limit the filter element assembly 5.
[0027] In this embodiment, the filter element assembly 5 includes a filter element body 51. An upper fixing ring 54 is fixedly connected to the upper part of the outer surface of the filter element body 51, and a lower fixing ring 52 is fixedly connected to the lower part of the outer surface of the filter element body 51. A filter structure 53 is inserted and connected to the upper end of the filter element body 51. The lower fixing ring 52 is inserted and connected to the support plate 11. The filter structure 53 includes a frame 531. A connecting pipe 532 is fixedly connected to the lower end of the frame 531. Support rods 533 are fixedly connected to the left and right parts of the lower inner frame wall of the frame 531. Three filter screens 534 are sleeved on the outer surfaces of the two support rods 533. A second positioning block 535 is fixedly connected to the upper left and upper right sides of the outer surface of the frame 531. The frame 531 is inserted and connected to the filter element body 51.
[0028] The above scheme involves connecting two connecting blocks 6 on the filter element assembly 5 to two connecting slots 16, respectively. By rotating the filter element assembly 5, the two connecting blocks 6 are connected to two movable slots 17, respectively. Two positioning screws 18 pass through the support plate 11 and are connected to the two connecting blocks 6, which can position the filter element assembly 5 and improve its stability during use. The two support rods 533 on the filter structure 53 can support the three filter screens 534, which can filter the air entering the filter element assembly 5. The connecting pipe 532 facilitates the connection between the filter structure 53 and the filter element body 51, improving stability.
[0029] It should be noted that this utility model is a filter element fixing device applied to an air purifier. During use, the two connecting blocks 6 on the filter element assembly 5 are inserted into the two connecting slots 16 respectively. Then, the filter element assembly 5 is rotated so that the two connecting blocks 6 are respectively inserted into the two movable slots 17. At this time, the position of the filter element assembly 5 is further defined. Then, two positioning screws 18 are used to pass through the support plate 11 and are inserted into the connecting blocks 6. After the positioning screws 18 are tightened, the resulting fastening force firmly fixes the connecting blocks 6 to the support plate 11, thereby effectively preventing the filter element assembly 5 from shaking during the operation of the air purifier, greatly improving its stability. The two second positioning blocks 535 are respectively inserted into the two limiting frames 3 and then fixed with screws. This connection method can accurately determine the position of the filter structure 53, ensuring that it will not shift during air filtration, thus guaranteeing filtration stability. The connecting pipe 532 is used to connect the filter structure 53 and the filter element body 51, providing a channel for airflow between the two, ensuring a smooth air purification process. The two support rods 533 on the filter structure 53... The three filter screens 534 are supported below to maintain their stable working state and enhance the stability of the entire filter structure 53. Two limiting frames 3 are respectively fitted onto the two support rods 14 on the left and right sides. Then, the two connecting screws 4 on the left and right sides pass through the two limiting frames 3 and are threaded into the four screw grooves 15. The threaded connection provides high tightness. After the connecting screws 4 are tightened, the limiting frames 3 are tightly connected to the support assembly 1, improving the stability of the entire device. Moreover, due to this detachable connection... In this way, when maintenance or replacement of the filter element assembly 5 or other components is required, the limiting frame 3 can be easily disassembled simply by unscrewing the connecting screw 4. The operation is simple and convenient. When air enters the filter element assembly 5, it first passes through three filter screens 534. The pore size design of the filter screens 534 can block large impurities in the air. These impurities are trapped on the surface of the filter screens 534, preventing them from entering the filter element body 51 and preventing the filter element body 51 from being blocked by the accumulation of impurities. This ensures the normal operation of the filter element body 51 and improves the purification effect and stability of the air purifier.
[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A filter element fixing device for use in an air purifier, comprising a support assembly (1), characterized in that: The lower left and lower right ends of the support assembly (1) are fixedly connected to two No. 1 positioning blocks (2). The upper left and upper right ends of the support assembly (1) are fitted with limit frames (3). The upper middle of the support assembly (1) is interwoven with a filter element assembly (5), and the filter element assembly (5) is interwoven with the two limit frames (3). The lower front and lower rear sides of the outer surface of the filter element assembly (5) are fixedly connected with connecting blocks (6). The upper ends of the two connecting blocks (6) are provided with connecting screw holes (7). The upper ends of the two limit frames (3) are interwoven with two connecting screws (4). The support assembly (1) includes a support plate (11), a circular groove (12) is provided in the middle of the upper end of the support plate (11), a connecting groove (13) is provided in the lower wall of the circular groove (12), support rods (14) are fixedly connected to the four corners of the upper end of the support plate (11), and screw grooves (15) are provided at the upper ends of the four support rods (14). Positioning screws (18) are inserted and connected to the left and right sides of the upper end of the support plate (11), and the support plate (11) is sleeved with the filter element assembly (5).
2. The filter element fixing device for an air purifier according to claim 1, characterized in that: The support plate (11) has connecting grooves (16) at the front and rear of its upper end. The circular groove (12) has movable grooves (17) on the left and right sides of its inner wall, and the two movable grooves (17) are respectively connected to the two connecting grooves (16).
3. The filter element fixing device for an air purifier according to claim 1, characterized in that: The filter element assembly (5) includes a filter element body (51), an upper fixing ring (54) is fixedly connected to the upper part of the outer surface of the filter element body (51), a lower fixing ring (52) is fixedly connected to the lower part of the outer surface of the filter element body (51), a filter structure (53) is inserted and connected to the upper end of the filter element body (51), and the lower fixing ring (52) is inserted and connected to the support plate (11).
4. A filter element fixing device for an air purifier according to claim 3, characterized in that: The filter structure (53) includes a frame (531), a connecting pipe (532) is fixedly connected to the lower end of the frame (531), and a support rod (533) is fixedly connected to the left and right sides of the inner lower frame wall of the frame (531). Three filter screens (534) are sleeved on the outer surfaces of the two support rods (533). A second positioning block (535) is fixedly connected to the upper left and upper right sides of the outer surface of the frame (531). The frame (531) is interlocked with the filter element body (51).
5. A filter element fixing device for an air purifier according to claim 1, characterized in that: The two connecting blocks (6) are respectively inserted into the two connecting slots (16).
6. A filter element fixing device for an air purifier according to claim 1, characterized in that: Both positioning screws (18) pass through the support plate (11) and are interlocked with the two connecting blocks (6).