Combined HEPA (High Efficiency Particulate Air) filter element convenient to mount quickly

Abstract

The utility model discloses a combined type HEPA filter element convenient to install quickly, and relates to the technical field of oxygen generator air filter elements, the combined type HEPA filter element comprises a filter, the filter comprises a filter element assembly, the filter element assembly comprises a plurality of inlets formed in the periphery of the top face of a shell, an outlet is formed in the top face of the shell, an accessory B is arranged on one side of an accessory A, and the accessory B is arranged on the other side of the accessory A; hEPA filter paper is arranged on the outer side of the accessory C. Compared with the traditional threaded connection, the bottom quick-release structure adopts the clamping groove and clamping block clamping design, so that the mounting time is shortened by more than 50%, a user can finish disassembly and assembly with one hand, and the use convenience is remarkably improved; a rigid supporting and elastic sealing structure is formed, it is ensured that air is only filtered through HEPA filter paper, bypass leakage of unfiltered air is avoided, the filtering precision can reach 0.3 micrometer, and the bacterium filtering efficiency is larger than or equal to 99.97%.

Description

Technical Field

[0001] This utility model relates to the field of oxygen concentrator air filter technology, specifically a modular HEPA filter that is easy to install quickly. Background Technology

[0002] HEPA air filters for oxygen concentrators help to block air impurities, extend the compressor's lifespan, and ensure cleaner air for users.

[0003] The applicant discovered through a search that a Chinese patent discloses "A modular HEPA filter element that is easy to install quickly," with publication number "CN 214972186 U." This patent mainly uses a double-ended threaded tube and threaded hole to facilitate disassembly and assembly, which is beneficial for the combined installation and replacement of filter elements and avoids the problem of poor filtration effect caused by not replacing the filter element for a long time. By setting filter element components, it is convenient to filter in multiple ways and improve the filtration effect. However, this structure achieves disassembly and assembly through a threaded structure, which is relatively cumbersome. There is still room for improvement in assembly efficiency when combining multiple components. Therefore, we propose a modular HEPA filter element that is easy to install quickly. Utility Model Content

[0004] The purpose of this invention is to provide a modular HEPA filter element that is easy to install quickly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular HEPA filter element for easy and quick installation, comprising a filter, the filter comprising a filter element assembly, the filter element assembly comprising a housing, accessory A, accessory C, and a secondary filter element cover, the housing having multiple inlets around its top surface and an outlet on its top surface, accessory B on one side of accessory A, HEPA filter paper on the outer side of accessory C, accessory D between the HEPA filter paper and the secondary filter element cover, accessory D fitting onto the secondary filter element cover, and through holes in the middle of accessories A, B, C, HEPA filter paper, D, and the secondary filter element cover, the bottom of the housing having a quick-release structure, the quick-release structure comprising a connecting ring, the connecting ring being located at the bottom of the housing, a locking block on the inner side of the connecting ring, and a locking groove on the outer side of the secondary filter element cover, the locking groove and the locking block engaging with each other.

[0006] As a further embodiment of this utility model: a screw is provided between accessory A and accessory B, and all three screws adopt metric M threads.

[0007] As a further embodiment of this utility model: a second screw is provided between accessory B and accessory C, and the second screw adopts a metric M thread.

[0008] As a further embodiment of this utility model: accessory A, accessory C, accessory D and the secondary filter cover are all made of hard plastic, and accessory B is made of silicone.

[0009] As a further embodiment of this utility model: the connecting ring is engaged with the secondary filter cover by a slot and a block.

[0010] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0011] 1. This utility model adopts a slot and block snap-fit ​​design with a quick-release structure at the bottom, which reduces the installation time by more than 50% compared with the traditional threaded connection, making it easier for users to disassemble and assemble, and significantly improving the convenience of use;

[0012] 2. This utility model, by setting up a silicone accessory B in conjunction with a hard plastic component, forms a "rigid support and elastic seal" structure, ensuring that air is filtered only through HEPA filter paper, avoiding bypass leakage of unfiltered air, with a filtration accuracy of up to 0.3 microns and a bacterial filtration efficiency of ≥99.97%;

[0013] 3. This utility model supports modular disassembly by connecting the components with standardized screws one and two, allowing users to replace damaged components (such as HEPA filter paper) individually, reducing maintenance costs and ultimately extending the overall service life of the filter element.

[0014] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0015] Figure 1 This is a first perspective view of an embodiment of the present utility model;

[0016] Figure 2 This is a first perspective view of the filter element assembly in an embodiment of the present utility model;

[0017] Figure 3 This is a second perspective view of the filter element assembly in an embodiment of the present utility model;

[0018] Figure 4 This is a third perspective view of the filter element assembly in an embodiment of the present utility model;

[0019] Figure 5 This is an exploded view of the filter element assembly in an embodiment of the present invention;

[0020] Figure 6 This is a first perspective view of the quick-release structure in an embodiment of the present utility model;

[0021] Figure 7 This is a second perspective view of the quick-release structure in an embodiment of the present utility model;

[0022] Figure 8 This is a third perspective view of the quick-release structure in an embodiment of this utility model.

[0023] In the diagram: 1. Filter; 2. Filter cartridge assembly; 21. Housing; 22. Inlet; 23. Outlet; 24. Accessory A; 25. Accessory B; 26. Accessory C; 27. HEPA filter paper; 28. Accessory D; 29. ​​Secondary filter cartridge cover; 3. Quick-release structure; 32. Slot; 33. Connecting ring; 34. Locking block. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0025] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Existing filter cartridges face numerous challenges in oxygen concentrator applications: traditional threaded or complex snap-fit ​​installation methods require tools, are time-consuming to install a single set, are inconvenient for users, and are prone to misalignment leading to seal failure; components often use single rigid plastic connections, lacking flexible sealing structures, and are susceptible to leakage due to aging, water pressure, and other factors over long-term use, resulting in decreased filtration accuracy and even secondary water pollution; furthermore, the integrated design means that the entire filter cartridge must be replaced when a single component fails, leading to high maintenance costs and insufficient flexibility. Therefore, please refer to the appendix... Figure 1 - Appendix Figure 8 This utility model discloses a modular HEPA filter element that is easy to install quickly. It includes a filter 1, a filter element assembly 2, and a filter element assembly 2 including a housing 21, accessory A24, accessory C26, and a secondary filter element cover 29. The top surface of the housing 21 has multiple (fresh air) inlets 22 around its perimeter, and a (filtered fresh air) outlet 23 on its top surface, forming a filtration path of "air intake around the perimeter and air outlet in the center". Accessory B25 is provided on one side of accessory A24, and HEPA filter paper 27 is provided on the outside of accessory C26. Accessory D28 is provided between the HEPA filter paper 27 and the secondary filter element cover 29 and is fitted onto the secondary filter element cover 29. Accessory A24, accessory B25, accessory C26, HEPA filter paper 27, accessory D28, and the secondary filter element cover 29 all have through holes in their middle sections, forming a main channel.

[0027] Example 1: A screw is installed between accessory A24 and accessory B25. Accessory A24 and accessory B25 are fastened by three screws. All three screws are metric M3 threads with a screw length of 6mm. Accessory A24 and accessory B25 are fastened by three screws. A screw is installed between accessory B25 and accessory C26. Screw 2 is metric M3 thread with a screw length of 7mm. Accessory B25 and accessory C26 are fastened by one screw. Accessories A24, accessory C26, accessory D28, and secondary filter cover 29 are all made of hard plastic, while accessory B25 is made of silicone.

[0028] Specifically, axial positioning is achieved by fastening the connection with screw one, radial sealing is ensured by fixing with screw two, and a sealed connection is formed by fitting accessory D28 onto the secondary filter element cover 29 through interference fit.

[0029] Specifically, by using hard plastic material for accessories A24, C26, D28 and secondary filter cover 29 to provide structural support, and using silicone material for accessory B25, the elastic structure of silicone is used to achieve sealing between the various components, thereby preventing leakage.

[0030] Example 2: A quick-release structure 3 is provided at the bottom of the outer shell 21. The quick-release structure 3 includes a connecting ring 33. The connecting ring 33 is located at the bottom of the outer shell 21. A locking block 34 is provided on the inner side of the connecting ring 33. A locking groove 32 is provided on the outer side of the secondary filter cover 29. The locking groove 32 and the locking block 34 are engaged with each other. The connecting ring 33 is engaged with the secondary filter cover 29 through the locking groove 32 and the locking block 34.

[0031] Specifically, the snap-fit ​​mechanism of the slot 32 and the snap-fit ​​block 34 enables quick assembly and disassembly of the housing 21 of the filter element assembly 2 and the filter 1, which can be completed without tools.

[0032] Specifically, by setting up a quick-release structure 3 at the bottom with a slot 32 and a locking block 34, the installation time is reduced by more than 50% compared to the traditional threaded connection, making it easier for users to disassemble and assemble, and significantly improving the ease of use.

[0033] Specifically, by setting up silicone accessory B25 to work with hard plastic components, a "rigid support and elastic seal" structure is formed, ensuring that air is filtered only through HEPA filter paper 27, avoiding bypass leakage of unfiltered air, with a filtration accuracy of up to 0.3 microns and a bacterial filtration efficiency of ≥99.97%.

[0034] Specifically, by connecting the components with standardized screws one and two, modular disassembly is supported. Users can replace damaged components (such as HEPA filter paper 27) individually, reducing maintenance costs and ultimately extending the overall service life of the filter element.

[0035] Working principle:

[0036] First, fix accessory B25 to accessory A24 with screw one to form a primary sealing structure. Then, connect accessory C26 to accessory B25 with screw two. Wrap the outside with HEPA filter paper 27. Fit accessory D28 onto the secondary filter cover 29, pass it through the inner through hole of HEPA filter paper 27, and connect it to the external pipeline through the top outlet 23 of housing 21. Align the bottom connecting ring 33 of housing 21 with the slot 32 of secondary filter cover 29 and insert it. Rotate clockwise until the slot 32 and the locking block 34 are fully engaged. After installation, the filtered air enters from the inlets 22 around the top surface of the housing 21, flows through the gap between accessories A24 and B25 into the outside of the HEPA filter paper 27, traps particulate pollutants through the filter paper, and is discharged from the outlet 23 through the through holes in accessories C26, D28 and the middle of the secondary filter cover 29. When the filter element assembly 2 needs to be replaced, rotate the housing 21 counterclockwise to separate the slot 32 and the locking block 34, and then remove the filter element assembly 2 as a whole for maintenance or replacement. This completes the entire workflow.

[0037] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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 limiting the scope of protection of this utility model.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0040] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A modular HEPA filter element that is easy to install quickly, comprising a filter (1), characterized in that: The filter (1) includes a filter element assembly (2), which includes a housing (21), accessory A (24), accessory C (26), and a secondary filter element cover (29). Multiple inlets (22) are provided around the top surface of the housing (21), and an outlet (23) is provided on the top surface of the housing (21). Accessory B (25) is provided on one side of accessory A (24). HEPA filter paper (27) is provided on the outside of accessory C (26). Accessory D (28) is provided between the HEPA filter paper (27) and the secondary filter element cover (29). Accessory D (28) is fitted onto the secondary filter element cover (29). On the primary filter cover (29), the accessories A (24), B (25), C (26), HEPA filter paper (27), D (28) and the secondary filter cover (29) are all provided with through holes that penetrate each other. The bottom of the outer shell (21) is provided with a quick-release structure (3). The quick-release structure (3) includes a connecting ring (33). The connecting ring (33) is located at the bottom of the outer shell (21). The inner side of the connecting ring (33) is provided with a locking block (34). The outer side of the secondary filter cover (29) is provided with a locking groove (32). The locking groove (32) and the locking block (34) are locked together.

2. The modular HEPA filter element for easy and quick installation according to claim 1, characterized in that: A screw is provided between accessory A (24) and accessory B (25), and all three screws are made of metric M3 thread.

3. A modular HEPA filter element for easy and quick installation according to claim 2, characterized in that: A second screw is provided between accessory B (25) and accessory C (26), and the second screw adopts a metric M3 thread.

4. A modular HEPA filter element for easy and quick installation according to claim 3, characterized in that: The accessories A (24), C (26), D (28) and the secondary filter cover (29) are all made of hard plastic, while accessory B (25) is made of silicone.

5. A modular HEPA filter element for easy and quick installation according to claim 1, characterized in that: The connecting ring (33) is engaged with the secondary filter cover (29) by the slot (32) and the block (34).

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