Filter element structure

Abstract

The utility model discloses a filter element structure which comprises a filter screen and a connecting piece, the filter screen comprises a plurality of folded edges, and the plurality of folded edges are sequentially connected end to end along the circumferential direction of the filter screen; the connecting piece is arranged between the two adjacent folded edges, the connecting piece is arranged on the edge of one side, far away from the center of the filter screen, of the folded edge in the radial direction of the filter screen, and the connecting piece is directly connected with the two adjacent filter screens. Therefore, the design of the multiple folded edge structures is beneficial to increasing the effective filtering area of the filter screen, the connecting pieces are arranged on the edges of the sides, away from the center of the filter screen, of the folded edges, the occupied area of the surface of the filter screen can be reduced, the path of fluid passing through the filter screen cannot be disturbed, fluid resistance is reduced, and the filtering efficiency of the filter screen is improved. The arrangement position of the connecting piece enables the stress to be small when the filter screen is folded, so that the connecting piece is not easy to break, the stability and the structural strength of the whole filter element structure can be enhanced, the connecting piece is less in material consumption, and the production cost, the transportation cost and the packaging cost of the filter element structure can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter device technical field especially is involved in a filter core structure. BACKGROUND

[0002] In the prior art, as shown in the drawings, the conventional structure of the common cylindrical air filter core is filter material folding semi-finished product 1 and plastic end cover 3, and the air filter core adopts the mode of folding and gluing first, and is fixed through the plastic end cover 3. Figure 1 Such humidifying filter core at least has the following problems: from the process point of view, the glue line needs to be relatively high, so as to avoid the situation of glue opening during assembly and humidifier operation, and the relatively thin glue line is easy to cause the filter core to be damaged due to glue opening, and vice versa, the relatively thick glue line affects the appearance and filtering performance of the filter core; in addition, in the case of the air filter core for humidification, the glue line 2 is easy to block the water flow on the surface of the filter material, which is not conducive to the uniform and rapid penetration of the water flow to the filter material, thereby affecting the humidification amount of the humidifying filter core. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art is solved. Therefore, one purpose of the utility model is to provide a filter core structure, which can reduce the production, transportation and packaging cost of the filter core structure on the premise of improving the filtering effect of the filter core structure.

[0004] According to the filter core structure of the utility model embodiment, the plurality of edge folding structures are beneficial to increase the effective filtering area of the filter screen, the connecting piece is arranged at the side edge of the edge folding away from the center of the filter screen, the occupied area of the filter screen surface can be reduced, the path of the fluid through the filter screen is not disturbed, the fluid resistance is reduced, and the filtering efficiency of the filter screen is improved. The setting position of the connecting piece makes the connecting piece less stressed when the filter screen is folded, so that the connecting piece is not easy to break, which is beneficial to enhance the stability and structural strength of the whole filter core structure, and the connecting piece uses less material, which is beneficial to reduce the production cost, transportation cost and packaging cost of the filter core structure.

[0005] According to the filter core structure of the utility model embodiment, the plurality of edge folding structures are beneficial to increase the effective filtering area of the filter screen, the connecting piece is arranged at the side edge of the edge folding away from the center of the filter screen, the occupied area of the filter screen surface can be reduced, the path of the fluid through the filter screen is not disturbed, the fluid resistance is reduced, and the filtering efficiency of the filter screen is improved. The setting position of the connecting piece makes the connecting piece less stressed when the filter screen is folded, so that the connecting piece is not easy to break, which is beneficial to enhance the stability and structural strength of the whole filter core structure, and the connecting piece uses less material, which is beneficial to reduce the production cost, transportation cost and packaging cost of the filter core structure.

[0006] In some embodiments, the connecting piece at least partially protrudes from the side surface of the edge folding away from the center of the filter screen along the radial direction of the filter screen.

[0007] In some embodiments, the connecting member keeps the distance between two adjacent connected edges unchanged in the radial direction of the filter screen away from the center of the filter screen.

[0008] In some embodiments, the connecting member connects the edges end to end, forming a complete ring; and / or, the connecting member is arranged between each group of edges, forming a broken ring.

[0009] In some embodiments, the height of the connecting member in the radial direction of the filter screen is H, and the H satisfies: 2mm≤H≤7mm.

[0010] In some embodiments, the width of the connecting member in the axial direction of the filter screen is L, and the L satisfies: 2mm≤L≤6mm.

[0011] In some embodiments, along the circumferential direction of the filter screen, the length of the projection of the connecting member on the edge in the radial direction of the filter screen is L1, and the length of the edge in the radial direction of the filter screen is L2, and the L1, L2 satisfy: 0

[0012] In some embodiments, the connecting member is a plurality of, and the plurality of connecting members are respectively arranged between two adjacent edges along the circumferential direction of the filter screen, and the plurality of connecting members are flush along the circumferential direction of the filter screen away from the side surface of the center of the filter screen in the radial direction of the filter screen.

[0013] In some embodiments, the connecting member is a plurality of, and the plurality of connecting members are respectively arranged between two adjacent edges along the axial direction of the filter screen.

[0014] In some embodiments, the connecting member is hot melt adhesive, PET, a combination of PET and hot melt adhesive, wire, sponge material, and back adhesive material.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of an air filter cartridge of the prior art;

[0018] Figure 2 is a schematic diagram of a filter cartridge structure according to an embodiment of the present application;

[0019] Figure 3is a main view schematic diagram of a filter core structure according to an embodiment of the present application;

[0020] Figure 4 is Figure 3 is an enlarged schematic diagram of the P area in the middle;

[0021] Figure 5 is a side view schematic diagram of a filter core structure according to an embodiment of the present application.

[0022] Reference Signs:

[0023] 100, filter core structure;

[0024] 10, filter screen; 11, folded edge; 12, first end; 13, second end; 14, connecting piece. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the following refers to Figures 2-5 , the filter core structure 100 of the embodiment of the present application, comprising: a filter screen 10 and a connecting piece 14. In this embodiment, the filter core structure 100 is a component for air filtration, adjustment or treatment, and is usually provided in devices such as air purifiers, air humidifiers, air blowers, air exchange devices, etc., which are not limited herein.

[0026] Specifically, as Figures 2-3 shown, the filter screen 10 includes a plurality of folded edges 11, and the plurality of folded edges 11 are sequentially connected head to tail along the circumference of the filter screen 10; the connecting piece 14 is arranged between two adjacent folded edges 11, and the connecting piece 14 is arranged on the side edge of the folded edge 11 away from the center of the filter screen 10 in the radial direction of the filter screen 10, and the connecting piece 14 directly contacts at least part of the surface of the side surface of the two adjacent folded edges 11 away from the center of the filter screen 10 in the radial direction of the filter screen 10 to achieve direct connection.

[0027] In combination Figures 3-4 , the structure cross section formed by the connection of the two adjacent folded edges 11 is V-shaped, the folded edges 11 are arranged along the circumference of the filter screen 10, and each folded edge 11 is connected head to tail with the adjacent folded edge 11 to form a continuous annular structure. The connecting piece 14 is arranged on the outer side edge of the folded edge 11 away from the filter screen 10 in the radial direction, and the end of the folded edge 11 away from the center of the filter screen 10 in the radial direction of the filter screen 10 is the first end 12, the connecting piece 14 is connected with the first end 12 of the two adjacent folded edges 11, and the connecting piece 14 extends along the circumference of the filter screen 10.

[0028] According to the filter element structure 100 of this utility model embodiment, the design of multiple folded edges 11 is beneficial to increasing the effective filtration area of ​​the filter screen 10. The connector 14 is located on the edge of the folded edge 11 away from the center of the filter screen 10, which can reduce the area occupied on the surface of the filter screen 10, and will not interfere with the path of fluid passing through the filter screen 10, thereby reducing fluid resistance and improving the filtration efficiency of the filter screen 10. The position of the connector 14 makes it less stressed when the filter screen 10 is folded, making the connector 14 less prone to breakage, which is beneficial to enhancing the stability and structural strength of the entire filter element structure 100. Moreover, the connector 14 uses less material, which helps to reduce the production cost, transportation cost and packaging cost of the filter element structure 100.

[0029] According to some embodiments of this utility model, such as Figures 2-5 As shown, the connector 14 protrudes at least partially radially from the folded edge 11 on the side surface of the filter 10 away from the center of the filter 10. The connector 14 is connected to the first end 12 of the folded edge 11 radially from the filter 10, and at least a portion of the connector 14 protrudes radially from the first end 12 of the folded edge 11.

[0030] Therefore, the protruding part of the connector 14 helps to enhance the firmness of the connection between the connector 14 and the filter screen 10. The protruding connector 14 can provide additional support for the filter screen 10, which helps to maintain the structural strength of the filter screen 10, enhances the structural strength of the connector 14, prevents the connector 14 from breaking when the filter screen 10 is compressed or stretched, and thus enhances the overall structural strength of the filter element structure 100.

[0031] According to some embodiments of this utility model, such as Figures 2-5 As shown, the connector 14 keeps the distance between the ends of two adjacent folded edges 11 that are radially away from the center of the filter screen 10 constant.

[0032] The filter 10 has an unfolded state and a folded state. When the filter 10 changes between the unfolded and folded states, the distance between the ends of two adjacent folded edges 11 that are radially away from the center of the filter 10 remains unchanged. The end of the folded edge 11 that is radially adjacent to the center of the filter 10 is the second end 13. The second end 13 of the folded edge 11 is a free end and can undergo a certain displacement, thus realizing the conversion between the unfolded and folded states of the filter 10. When the filter 10 changes between the unfolded and folded states, the distance between the first ends 12 of adjacent folded edges 11 remains unchanged, while the distance between the second ends 13 of adjacent folded edges 11 increases or decreases. When the filter 10 is in the unfolded state, the distance between the second ends 13 of adjacent folded edges 11 is larger, which can provide a larger filtration area and is suitable for actual filtration operations. When the filter 10 is in the folded state, the distance between the second ends 13 of adjacent folded edges 11 is smaller, and the filter 10 is compressed or folded, which facilitates the transportation, storage, or replacement of the filter 10.

[0033] Thus, the distance between the two adjacent folds 11 along the radial direction of the filter screen 10 away from one end of the center of the filter screen 10 remains unchanged when the filter screen 10 is transformed between the unfolded state and the folded state, which ensures the stability and consistency of the structure of the filter screen 10, and the change of the distance between the two adjacent folds 11 along the radial direction of the filter screen 10 adjacent to one end of the center of the filter screen 10 facilitates the transportation, storage, replacement and installation of the filter screen 10, reduces the transportation cost of the filter screen 10, and improves the practicability of the filter screen 10.

[0034] According to some embodiments of the present application, as shown in Figures 2-5 The connecting piece 14 is connected to the folds 11 end to end to form a complete annular shape, that is, a plurality of connecting pieces 14 are connected to each other along the circumferential direction of the filter screen 10 to form an integral annular structure on the side surface of the filter screen 10 away from the center of the filter screen 10 in the radial direction; and / or, the connecting pieces 14 are arranged alternately between the groups of folds 11 to form a broken annular shape, at least part of the connecting pieces 14 are connected to each other along the circumferential direction of the filter screen 10 to form a plurality of groups of connecting pieces 14, each group of connecting pieces 14 is connected to the first end 12 of a plurality of folds 11, and the plurality of groups of connecting pieces 14 are arranged at intervals along the circumferential direction of the filter screen 10 to form an intermittent annular structure.

[0035] Thus, the connecting piece 14 is connected end to end to form a complete annular structure, which facilitates the stability of the structure of the filter screen 10, and facilitates the installation and use of the filter screen 10. The intermittent annular connecting piece 14 structure facilitates the folding or compression of the filter screen 10, and also facilitates the transportation, storage or replacement of the filter screen 10.

[0036] According to some embodiments of the present application, as shown in Figures 2-4 The height of the connecting piece 14 along the radial direction of the filter screen 10 is H, and H satisfies: 2mm≤H≤7mm.

[0037] The height of the connecting piece 14 in the radial direction of the filter screen 10 is at least 2mm, which can ensure that the connecting piece 14 can provide sufficient mechanical support and connection strength to prevent the connecting piece 14 from being delaminated or broken under normal working conditions. The height of the connecting piece 14 in the radial direction of the filter screen 10 is not more than 7mm, that is, the connecting piece 14 is not too high, which can avoid excessive use of the connecting piece 14, increase the production cost of the filter core structure 100, and the excessively high connecting piece 14 can cause the size of the filter core structure 100 to increase, affecting its applicability and installation convenience. For example, H=5mm.

[0038] Thus, by limiting the height of the connecting piece 14 in the radial direction of the filter screen 10, the amount of use can be saved under the premise of ensuring the structural strength of the connecting piece 14, the production cost of the filter core structure 100 is reduced, and the performance of the filter core structure 100 can be maintained stable during long-term operation.

[0039] According to some embodiments of the present application, as shown inFigures 2-5 As shown, the width of the connecting piece 14 along the axial direction of the filter screen 10 is L, and L satisfies: 2mm≤L≤6mm.

[0040] The minimum width of the connecting piece 14 along the axial direction of the filter screen 10 is 2mm, which can ensure that the connecting piece 14 can provide sufficient mechanical support and connection strength to prevent the connecting piece 14 from delamination or fracture under normal working conditions. The width of the connecting piece 14 along the axial direction of the filter screen 10 is not more than 6mm, that is, to avoid the connecting piece 14 being too wide, resulting in excessive use of the connecting piece 14, increasing the production cost of the filter core structure 100, and the excessively wide connecting piece 14 will cause the size of the filter core structure 100 to increase, affecting its applicability and installation convenience. For example, L=5mm.

[0041] Therefore, by limiting the width of the connecting piece 14 along the axial direction of the filter screen 10, the amount of use can be saved under the premise of ensuring the structural strength of the connecting piece 14, the production cost of the filter core structure 100 is reduced, and the performance of the filter core structure 100 is ensured to remain stable during long-term operation.

[0042] According to some embodiments of the present application, as shown in Figures 2-5 As shown, along the circumferential direction of the filter screen 10, the length of the projection of the connecting piece 14 on the folded edge 11 in the radial direction of the filter screen 10 is L1, and the length of the folded edge 11 in the radial direction of the filter screen 10 is L2, and L1, L2 satisfy: 0

[0043] That is, the projection length L1 of the connecting piece 14 on the folded edge 11 is within one fourth of the length L2 of the folded edge 11 along the radial direction of the filter screen 10, which ensures that the connecting piece 14 does not excessively occupy the space on the surface of the folded edge 11, thereby avoiding interference with the fluid flow path, while ensuring that the connecting piece 14 can provide sufficient mechanical support and connection strength to ensure firm connection between adjacent folded edges 11.

[0044] Therefore, by limiting the proportional relationship between the projection length L1 of the connecting piece 14 on the folded edge 11 and the length L2 of the folded edge 11 along the radial direction of the filter screen 10, the high-efficiency filtering performance of the filter core can be maintained under the premise of ensuring that the connecting piece 14 provides necessary support and connection strength.

[0045] According to some embodiments of the present application, as shown in Figures 2-5 As shown, the connecting piece 14 is a plurality of connecting pieces 14, and the plurality of connecting pieces 14 are respectively arranged between adjacent two folded edges 11 along the circumferential direction of the filter screen 10, and the plurality of connecting pieces 14 are flush along the circumferential direction of the filter screen 10 away from the side surface of the filter screen 10 center.

[0046] At least part of the connecting piece 14 is located between two adjacent folded edges 11 along the radial direction of the filter screen 10, and at least part of the connecting piece 14 protrudes from the first end 12 of the folded edge 11 in a direction away from the center of the filter screen 10 along the radial direction of the filter screen 10. The parts of the plurality of connecting pieces 14 protruding from the first end 12 of the folded edge 11 are connected to each other, and the side surface of the part of the plurality of connecting pieces 14 protruding from the first end 12 of the folded edge 11 away from the center of the filter screen 10 is flush along the circumferential direction of the filter screen 10. That is, when the plurality of connecting pieces 14 are connected to each other along the circumferential direction of the filter screen 10, the outer side surface of the plurality of connecting pieces 14 away from the center of the filter screen 10 is flush, the plurality of connecting pieces 14 are formed together by the dispensing process, the connecting piece 14 can be completed in one operation, which simplifies the manufacturing process and reduces the production cost. The dispensing process can accurately control the amount and position of the adhesive, ensure the consistency of the quality of each connecting piece 14, and improve the production efficiency.

[0047] Therefore, the plurality of connecting pieces 14 are connected to each other along the circumferential direction of the filter screen 10, which enhances the stability of the entire filter core structure 100, and the design of the plurality of connecting pieces 14 connected to each other can better disperse the force received by the connecting piece 14 when the filter screen 10 deforms, thereby improving the durability of the connecting piece 14 and avoiding the breakage of the connecting piece 14. The flush outer circumferential surface of the plurality of connecting pieces 14 is conducive to improving the surface aesthetics and cleanliness of the filter core structure 100.

[0048] According to some embodiments of the present application, as shown in Figures 2-5 The connecting piece 14 is a plurality of connecting pieces 14, and the plurality of connecting pieces 14 are respectively arranged between two adjacent folded edges 11 along the axial direction of the filter screen 10.

[0049] A plurality of connecting pieces 14 are arranged between two adjacent folded edges 11, and the plurality of connecting pieces 14 are arranged at intervals along the axial direction of the filter screen 10. The interval arrangement of the connecting pieces 14 can provide uniform mechanical support for the filter screen 10 in the axial direction, prevent local stress concentration, and ensure that the filter screen 10 will not deform or be damaged when subjected to pressure or tension.

[0050] Therefore, the design that the plurality of connecting pieces 14 are arranged at intervals between two adjacent folded edges 11 along the axial direction of the filter screen 10 can ensure the stability and functionality of the structure of the filter screen 10.

[0051] According to some embodiments of the present application, as shown in Figures 2-5 The connecting piece 14 is a combination of hot melt glue, PET, PET heated melt glue, a wire, a sponge material, or an adhesive-backed material.

[0052] The hot melt adhesive becomes liquid when heated, which is easy to apply. After cooling, it quickly solidifies to form a strong bond, which is beneficial to shorten the production cycle of the filter core structure 100 and improve the manufacturing efficiency of the filter core structure 100. The hot melt adhesive has high bonding strength after solidification, which can provide reliable mechanical support and ensure the firm connection between adjacent folded edges 11, preventing the filter screen 10 from deforming or being damaged. The hot melt adhesive usually has good resistance to various chemicals (such as acids, bases, solvents) and can remain stable under different temperature and humidity conditions, which is suitable for various working environments. The hot melt adhesive has good fluidity and plasticity in the heated state, which can fill irregular surfaces and ensure uniform distribution and tight fitting, especially suitable for complex filter screen 10 structures. PET is a common plastic material with good mechanical properties and chemical stability. The connecting piece 14 can also be a material that mixes or combines PET with hot melt adhesive, various types of adhesive line materials, sponge materials, or back adhesive materials with self-adhesive properties.

[0053] Therefore, the connecting piece 14 is convenient for the hot melt adhesive to be applied to the surface of the filter screen 10 by the dispensing process. The fluidity of the hot melt adhesive itself allows the hot melt adhesive to flow along the surface of the folded edge 11 to the adjacent folded edge 11 and quickly cool and solidify, which can effectively simplify the production process of the filter core structure 100 and improve the production efficiency of the filter core structure 100. The connecting piece 14 is hot melt adhesive, PET, a combination of PET and hot melt adhesive, a line, a sponge material, or a back adhesive material, which can effectively improve the reliability and durability of the filter core structure 100, reduce the production cost and maintenance cost of the filter core structure 100, and prolong the service life of the filter core structure 100.

[0054] In the description of the present application, 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0055] In the description of the utility model, "first feature", "second feature" can include one or more features. In the description of the utility model, "multiple" means two or more. In the description of the utility model, "above" or "below" of the first feature in the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. In the description of the utility model, "above", "above" and "above" of the first feature in the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.

[0056] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0057] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A filter cartridge construction characterized by, The application relates to a filter screen, comprising: a filter screen comprising a plurality of edges, the edges being connected in sequence along the circumferential direction of the filter screen; a connecting piece arranged between two adjacent edges, the connecting piece being arranged on the side edge of the edges away from the center of the filter screen in the radial direction of the filter screen, and the connecting piece being directly connected with the two adjacent edges.

2. The filter cartridge construction of claim 1 wherein, The connecting piece at least partially protrudes from the side surface of the edges away from the center of the filter screen in the radial direction of the filter screen.

3. The filter cartridge construction of claim 1 wherein, The connecting piece keeps the distance between the two edges connected by the connecting piece and the end of the edges away from the center of the filter screen in the radial direction of the filter screen unchanged.

4. The filter cartridge construction of claim 3 wherein, The connecting piece connects the edges in sequence, and forms a complete ring; and / or The connecting piece is arranged between each group of edges, and forms an incomplete ring.

5. The filter cartridge construction of claim 1 wherein, The height of the connecting piece in the radial direction of the filter screen is H, and the H satisfies 2mm<=H<=7mm.

6. The filter cartridge construction of claim 1 wherein, The width of the connecting piece in the axial direction of the filter screen is L, and the L satisfies 2mm<=L<=6mm.

7. The filter cartridge construction of claim 1 wherein, The projection of the connecting piece on the edges in the circumferential direction of the filter screen has a length L1 in the radial direction of the filter screen, and the length of the edges in the radial direction of the filter screen is L2, and the L1 and L2 satisfy 0 8. The filter cartridge construction of claim 1 wherein, There are a plurality of connecting pieces, and the connecting pieces are arranged between two adjacent edges in the circumferential direction of the filter screen.

9. The filter cartridge construction of claim 1 wherein, The connecting pieces are arranged between two adjacent edges in the axial direction of the filter screen.

10. The filter cartridge construction of any of claims 1-9, wherein, The connecting piece is hot melt glue, PET, a combination of PET and hot melt glue, a wire, a sponge material or a back adhesive material.

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