An air cleaner element assembly

Abstract

The utility model discloses an air filter inner core subassembly relates to air filter element technical field. An air filter inner core subassembly includes: the outer layer metal support net, nanometer metal filter screen, inner layer metal support net that set up in proper order from outside to inside, the utility model has high strength, high breaking degree, high air permeability etc. advantage, second nanometer metal filter screen has good thermal stability, and it is more suitable for using under high temperature environment, and nanometer metal filter screen can take place elastic deformation under the airflow impact simultaneously, has good resilience, compares traditional paper filter core to avoid the fiber fracture problem of paper filter core, and nanometer metal filter screen compares paper filter core and will not because of humid etc. problem, and the problem of air permeability drop occurs, and the traditional paper filter core is in the case where air is humid, and moisture will cause paper filter core humid, causes dust and other foreign matters to adhere on paper filter core, and causes air permeability to drop, and then influence ventilation capacity.

Description

Technical Field

[0001] This utility model belongs to the field of air filter technology, specifically, it relates to an air filter inner core assembly. Background Technology

[0002] Filters are classified according to their different filtration functions as: oil filters, fuel filters, air filters, and cabin air filters.

[0003] Air filters are mainly used in pneumatic machinery, internal combustion machinery, and other fields. Their function is to provide clean air to these machines, preventing them from drawing in air containing impurities and increasing the likelihood of corrosion and damage. Air filtration is performed by the filter element within the air filter. The filter element has a dirty side surface facing the air to be filtered and a clean side surface facing the filtered air. The air to be filtered enters the filter element from the dirty side surface, is filtered by the filter material, and then flows out from the clean side surface.

[0004] Currently, the air filter elements used in vehicle internal combustion engines are mainly paper filter elements. A paper filter element consists of a cylindrical filter element body formed by connecting folded filter paper end to end, and upper and lower end caps set at both ends of the filter element body. However, paper filter element material does not have good moisture resistance. When it gets damp, it will reduce the filtration efficiency and increase the adhesion strength of dust, resulting in a reduction in the service life of the filter element. On the other hand, the air intake of paper filter elements is limited, and the strength is low. When faced with foreign objects passing through, it is easy to be damaged, which leads to an increase in the cost of use. To address this, we propose an air filter inner core assembly. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an air filter inner core assembly that can overcome the above problems or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: an air filter inner core assembly, comprising: an outer metal support mesh, a nano metal filter mesh, and an inner metal support mesh arranged sequentially from the outside to the inside; a lower base and an upper mounting base disposed at both ends of the outer metal support mesh, which together form a columnar cavity with the upper mounting base being axially open, and the upper mounting base having an external thread on its outer periphery; the nano metal filter mesh having a geometrically continuous surface cross-section.

[0007] Preferably, the geometrically continuous surface is a circular surface.

[0008] Preferably, the geometrically continuous surface is a continuous wavy surface, the outer wall of the continuous wavy surface is formed with an outwardly convex arc surface and an outwardly concave arc surface, and the inner wall of the continuous wavy surface is formed with an inwardly convex arc surface and an inwardly concave arc surface.

[0009] Preferably, the outer concave arc surface and the inner concave arc surface are flow guiding channels.

[0010] Furthermore, the extending directions of the convex, concave, convex, and concave arc surfaces are parallel to the axis of the nano-metal filter.

[0011] Furthermore, the convex outer arc surface, concave outer arc surface, convex inner arc surface, and concave inner arc surface are spiral in shape.

[0012] Furthermore, it also includes an inner inhibition ring and an outer inhibition ring located on the inner and outer wall surfaces of the nano-metal filter, respectively.

[0013] Preferably, the geometrically continuous surface is a continuous arcuate surface, the outer wall of the continuous arcuate surface is formed with an outwardly convex plane and an outwardly concave plane, and the inner wall of the continuous arcuate surface is formed with an inwardly convex plane and an inwardly concave plane.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0015] 1. The inner core component of this air filter can replace the traditional paper filter with a nano-metal filter. Compared with paper filters, it has advantages such as high strength, high burst resistance, and high air permeability. Secondly, the nano-metal filter has good thermal stability, making it more suitable for use in high-temperature environments. At the same time, the nano-metal filter can undergo elastic deformation under airflow impact, exhibiting good resilience and avoiding the fiber breakage problem of traditional paper filters. Furthermore, the nano-metal filter does not experience a decrease in air permeability due to moisture, unlike traditional paper filters, which become damp in humid air, causing dust and other foreign objects to adhere to the paper filter, resulting in reduced air permeability and thus affecting airflow.

[0016] Compared to traditional paper filters, nano-metal filters can be washed with water without affecting their filtration efficiency. They are also easier to clean, reducing replacement costs. Furthermore, when used in vehicles, they can reduce overall fuel consumption compared to traditional paper filters, thus lowering vehicle operating costs.

[0017] 2. The inner core component of this air filter features a continuously wavy cross-section for the nano-metal filter mesh, which further increases the contact area between the nano-metal filter mesh and the air (compared to nano-metal filters with a circular cross-section), improving the air dust filtration effect. The convex arc surface guides airborne particles towards the concave arc surface, allowing particles to accumulate on the concave arc surface during the initial air filtration process, thus preventing the convex arc surface from becoming clogged for a longer period. This effectively achieves a staged filtration effect, improving filtration performance and filtration time compared to nano-metal filters with a circular cross-section.

[0018] The circular cross-section nano-metal filter is positioned between the outer and inner metal support meshes. During use, the inner and outer walls of the nano-metal filter will come into contact with the outer and inner metal support meshes. Currently, most outer and inner metal support meshes are formed by stamping, winding, and welding, resulting in burrs on their surfaces. This causes the inner wall of the nano-metal filter to come into contact with the outer wall of the inner metal support mesh when air passes through it. Under the disturbance of the airflow, the inner wall of the nano-metal filter will come into contact with and rub against the inner metal support mesh. This can easily cause the nano-metal filter to snag, leading to an increase in the filter pore size and affecting the filtration effect.

[0019] The nano-metal filter with a continuous wavy cross-section and convex outer and inner arc surfaces reduces the area with the outer and inner metal support meshes, changing the traditional surface contact to line contact. The nano-metal filter with convex outer and inner arc surfaces can also provide a certain buffer when subjected to airflow impact, thereby reducing the risk of snagging and extending the service life of the nano-metal filter.

[0020] 3. The inner core component of this air filter has an outer convex arc surface, an outer concave arc surface, an inner convex arc surface, and an inner concave arc surface whose extension directions are parallel to the axis of the nano-metal filter mesh. The flow guiding channel of the outer concave arc surface can guide the airflow that is about to pass through the nano-metal filter mesh to both ends of the nano-metal filter mesh, reducing the local impact force on the nano-metal filter mesh and effectively avoiding the increase in the pore size of the nano-metal filter mesh due to stress concentration, which would affect the air filtration performance.

[0021] The spiral shape of the convex, concave, convex, and concave arc surfaces allows the airflow in the outer metal support mesh to create a circumferential flow path, further reducing the local stress and impact force of the airflow on the nano-metal filter mesh. Secondly, the spiral shape of the nano-metal filter mesh makes the guide channels formed by the concave and concave arc surfaces also spiral, which can guide the airflow and allow the airflow passing through the guide channels to carry away the particles on the outer wall of the nano-metal filter mesh, thereby playing a self-cleaning role.

[0022] Secondly, the airflow passing through the nano-metal filter is guided by the spiral concave arc surface, causing the airflow to flow along the concave arc surface of the spiral guide channel and towards the opening of the upper mounting base. This can effectively reduce the airflow collision that occurs when the airflow passes through the nano-metal filter and reaches the middle, thus affecting the exhaust effect of the filtered air.

[0023] It also includes inner and outer inhibition rings located on the inner and outer walls of the nano-metal filter, respectively. The inner and outer inhibition rings are interference-fitted with the nano-metal filter and connected to the outer and inner metal support meshes by welding or high-temperature adhesive. On the one hand, it inhibits and restricts the shape of the nano-metal filter to prevent deformation. On the other hand, it can block and isolate the inner wall of the nano-metal filter from the outer wall of the inner metal support mesh, reducing the contact between the nano-metal filter and the outer wall of the inner support mesh and reducing the problem of snagging. Secondly, the inner convex arc surface of the inner wall of the nano-metal filter with a continuous wavy cross-section has a small contact area with the inner metal support mesh, which further reduces the contact area and avoids the problem of snagging.

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0025] In the attached diagram:

[0026] Figure 1 This is a three-dimensional structural diagram of an air filter core assembly proposed in this utility model.

[0027] Figure 2 This is a front view of an air filter inner core assembly proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the outer metal support mesh and inner metal support mesh of an air filter core assembly proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the circular surface of an air filter inner core assembly proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of a nano-metal filter screen in the inner core component of an air filter according to the present invention.

[0031] Figure 6 This utility model provides a structural schematic diagram of the outer and inner suppression rings of an air filter inner core assembly. Figure 1 ;

[0032] Figure 7This utility model provides a structural schematic diagram of the outer and inner suppression rings of an air filter inner core assembly. Figure 2 ;

[0033] Figure 8 This utility model proposes an air filter inner core assembly. Figure 7 Schematic diagram of the structure at point A;

[0034] Figure 9 This is a top view of the outer metal support mesh and the inner metal support mesh of the air filter core assembly proposed in this utility model;

[0035] Figure 10 This utility model proposes an air filter inner core assembly. Figure 9 Top view at point B;

[0036] Figure 11 A three-dimensional view of a spiral-shaped nano-metal filter screen;

[0037] Figure 12 A front view of a spiral-shaped nano-metal filter screen;

[0038] Figure 13 This is a schematic diagram of the continuous arcuate surface of the inner core assembly of an air filter proposed in this utility model.

[0039] In the diagram: 1. Outer metal support mesh; 2. Inner metal support mesh; 3. Lower base; 4. Upper mounting base; 5. Nano-metal filter mesh; 50. Circular surface; 500. Continuous wavy surface; 5000. Continuous arc-shaped surface; 50001. Outer convex plane; 50002. Outer concave plane; 50003. Inner convex plane; 50004. Inner concave plane; 51. Outer suppression ring; 501. Outer convex arc surface; 502. Outer concave arc surface; 503. Inner convex arc surface; 504. Inner concave arc surface; 52. Inner suppression ring. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0041] Example 1: Refer to Figures 1-13An air filter core assembly includes: an outer metal support mesh 1, a nano-metal filter mesh 5, and an inner metal support mesh 2, sequentially arranged from the outside to the inside; a lower base 3 and an upper mounting base 4 are adhesively attached to both ends of the outer metal support mesh 1. The nano-metal filter mesh 5 and the inner metal support mesh 2 are also connected to the lower base 3 and the upper mounting base 4 via adhesive, forming a columnar cavity with the upper mounting base 4 having an axial opening. The columnar cavity is located inside the inner metal support mesh 2. The upper mounting base 4 has external threads on its outer periphery for quick sealing connection with the mounting location. To further improve the sealing effect between the upper mounting base 4 and the mounting location, a sealing ring can be fitted on the outer periphery of the upper mounting base 4. The nano-metal filter mesh 5 has a geometrically continuous cross-section.

[0042] The design of this inner core component transforms the traditional paper filter into a nano-metal filter 5, which offers advantages over paper filters such as high strength, high burst resistance, and high air permeability. Furthermore, the nano-metal filter 5 exhibits excellent thermal stability, making it more suitable for use in high-temperature environments. Simultaneously, the nano-metal filter 5 can undergo elastic deformation under airflow impact, demonstrating excellent resilience and avoiding the fiber breakage issues associated with traditional paper filters. Moreover, unlike paper filters, the nano-metal filter 5 does not experience a decrease in air permeability due to moisture, whereas traditional paper filters become damp in humid conditions, causing dust and other foreign matter to adhere to the filter, reducing air permeability and consequently affecting airflow.

[0043] Compared to traditional paper filter cartridges, the nano metal filter 5 can be rinsed with water, and rinsing with water will not affect the filtration effect of the nano metal filter 5. Compared with paper filter cartridges, it is easier to clean and reduces replacement costs.

[0044] Setting the nano-metal filter 5 as a geometrically continuous surface can improve the filtration effect on air.

[0045] Example 2: Refer to Figure 5 An air filter core assembly is basically the same as in Embodiment 1, but further: the geometrically continuous surface is a circular surface 50, which can bring lower airflow resistance. Secondly, under the condition of no turbulence interference, air particles are uniformly adsorbed along the normal direction, avoiding local blockage problems. Furthermore, the nano-metal filter 5 of the circular surface 50 is easy to produce and has low manufacturing cost.

[0046] The nano-metal filter 5, which has a circular cross-section 50, has, but is not limited to, one layer.

[0047] Example 3: Reference Figure 5 , Figure 6 , Figure 8 , Figure 10 ,Figure 11 , Figure 12 An air filter core assembly is basically the same as in Embodiment 1, but further: the geometric continuous surface is a continuous wave surface 500, the outer wall surface of the continuous wave surface 500 is formed with an outwardly convex arc surface 501 and an outwardly concave arc surface 502, and the inner wall surface of the continuous wave surface 500 is formed with an inwardly convex arc surface 503 and an inwardly concave arc surface 504.

[0048] Setting the cross-section of the nano-metal filter 5 to a continuous wavy surface 500 further increases the contact area between the nano-metal filter 5 and the air (compared to the nano-metal filter 5 with a circular cross-section 50), improving the air dust filtration effect. The convex arc surface 501 guides airborne particles to the concave arc surface 502, allowing particles to accumulate on the concave arc surface 502 during the initial air filtration process. This prevents the convex arc surface 501 from becoming clogged with particles for a longer period, effectively achieving a staged filtration effect. Compared to the nano-metal filter 5 with a circular cross-section 50, this improves filtration performance and filtration time.

[0049] The nano-metal filter 5 with a circular cross-section 50 is positioned between the outer metal support mesh 1 and the inner metal support mesh 2. During use, the inner and outer walls of the nano-metal filter 5 will come into contact with the outer metal support mesh 1 and the inner metal support mesh 2. Currently, most of the outer metal support mesh 1 and the inner metal support mesh 2 are formed by stamping, winding, and welding, and their surfaces will have burrs. This causes the inner wall of the nano-metal filter 5 to come into contact with the outer wall of the inner metal support mesh 2 when air passes through the nano-metal filter 5. Under the disturbance of the airflow, the inner wall of the nano-metal filter 5 will come into contact with and rub against the inner metal support mesh 2. This can easily cause the nano-metal filter 5 to snag, resulting in an increase in the filter pore size and affecting the filtration effect.

[0050] The nano-metal filter 5 has a continuous wavy surface 500 in cross section and forms an outward convex arc surface 501 and an inward convex arc surface 503, thereby reducing the area with the outer metal support mesh 1 and the inner metal support mesh 2, changing the traditional surface contact to line contact. The nano-metal filter 5 with outward convex arc surface 501 and inward convex arc surface 503 can also provide a certain buffer when subjected to airflow impact, thereby reducing the risk of snagging and extending the service life of the nano-metal filter 5.

[0051] The concave arc surface 502 and the concave arc surface 504 serve as flow guiding channels. The extension directions of the convex arc surface 501, the concave arc surface 502, the convex arc surface 503, and the concave arc surface 504 are parallel to the axis of the nano-metal filter screen 5. The flow guiding channel of the concave arc surface 502 can guide the airflow that is about to pass through the nano-metal filter screen 5 to both ends of the nano-metal filter screen 5, reduce the local impact force on the nano-metal filter screen 5, and effectively avoid the increase in the pore size of the nano-metal filter screen 5 due to stress concentration, which would affect the air filtration performance.

[0052] The convex arc surface 501, concave arc surface 502, convex arc surface 503, and concave arc surface 504 are spiral-shaped, which allows the airflow on the outer metal support mesh 1 to generate a circumferential flow path, further reducing the local stress and impact force of the airflow on the nano-metal filter mesh 5. Secondly, the spiral shape of the nano-metal filter mesh 5 will also make the guide channel formed by the concave arc surface 502 and the concave arc surface 504 spiral-shaped. While guiding the airflow, the airflow passing through the guide channel can carry away the particles on the outer wall surface of the nano-metal filter mesh 5, thereby playing a self-cleaning role.

[0053] Secondly, the airflow passing through the nano-metal filter 5 is guided by the spiral concave arc surface 504, causing the airflow to flow along the concave arc surface 504 of the spiral guide channel and towards the opening of the upper mounting base 4. This can effectively reduce the airflow collision that occurs when the airflow passes through the nano-metal filter 5 and reaches the middle, thus affecting the exhaust effect of the filtered air.

[0054] It also includes inner inhibition rings 52 and outer inhibition rings 51 located on the inner and outer walls of the nano-metal filter 5, respectively. The inner inhibition rings 52 and outer inhibition rings 51 are interference-fitted with the nano-metal filter 5. The inner inhibition rings 52 and outer inhibition rings 51 are connected to the outer metal support mesh 1 and inner metal support mesh 2 by welding or high-temperature adhesive. On the one hand, it inhibits and restricts the shape of the nano-metal filter 5 to prevent deformation and to shape the nano-metal filter 5. On the other hand, it can block and isolate the inner wall of the nano-metal filter 5 from the outer wall of the inner metal support mesh 2, reducing the contact between the nano-metal filter 5 and the outer wall of the inner metal support mesh 2 and reducing the problem of snagging. Secondly, the inner convex arc surface 503 of the inner wall of the nano-metal filter 5, which has a continuous wavy surface 500, has a small contact area with the inner metal support mesh 2, which further reduces the contact area and avoids the problem of snagging.

[0055] Example 4: Reference Figure 13An air filter core assembly is basically the same as in Embodiment 1, but further: the geometrically continuous surface is a continuous arcuate surface 5000, the outer wall surface of the continuous arcuate surface 5000 is formed with an outwardly convex plane 50001 and an outwardly concave plane 50002, and the inner wall surface of the continuous arcuate surface 5000 is formed with an inwardly convex plane 50003 and an inwardly concave plane 50004, which can further increase the contact area with air compared to the continuous wavy surface 500;

[0056] The continuous arc-shaped surface 5000 nano-metal filter 5 has better resistance to deformation;

[0057] The flow channel formed by the outer concave plane 50002 and the inner concave plane 50004 can form a straight flow channel, which can better gather airflow and is suitable for high air volume scenarios.

[0058] The right-angle bend of the convex plane 50001 can generate a boundary layer separation effect, which can better capture particles in the air and avoid damage caused by friction between particles and the nano-metal filter 5.

[0059] This invention, through the design of the inner core component, transforms a traditional paper filter into a nano-metal filter 5. Compared to paper filters, it offers advantages such as high strength, high burst resistance, and high air permeability. Furthermore, the nano-metal filter 5 exhibits excellent thermal stability, making it more suitable for use in high-temperature environments. Simultaneously, the nano-metal filter 5 can undergo elastic deformation under airflow impact, demonstrating excellent resilience and avoiding the fiber breakage issues common in traditional paper filters. Moreover, unlike paper filters, the nano-metal filter 5 does not experience a decrease in air permeability due to moisture. In contrast, with traditional paper filters, moisture causes dampness, leading to dust and other foreign matter adhering to the filter, thus reducing air permeability and affecting airflow.

[0060] Compared to traditional paper filter cartridges, the nano-metal filter 5 can be rinsed with water without affecting its filtration effect. It is also easier to clean than paper filter cartridges, reducing replacement costs.

[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An air filter inner core assembly, characterized in that, include: The outer metal support mesh (1), the nano metal filter mesh (5), and the inner metal support mesh (2) are sequentially arranged from the outside to the inside. The lower base (3) and upper mounting base (4) are set at both ends of the outer metal support mesh (1), and together they form a columnar cavity with the upper mounting base (4) being axially open. The upper mounting base (4) is provided with external threads on its outer periphery. The cross-section of the nano-metal filter (5) is a geometrically continuous surface.

2. The air filter inner core assembly according to claim 1, characterized in that, The geometrically continuous surface is a circular surface (50).

3. The air filter inner core assembly according to claim 1, characterized in that, The geometrically continuous surface is a continuous wave surface (500). The outer wall surface of the continuous wave surface (500) is formed with an outwardly convex arc surface (501) and an outwardly concave arc surface (502). The inner wall surface of the continuous wave surface (500) is formed with an inwardly convex arc surface (503) and an inwardly concave arc surface (504).

4. The air filter inner core assembly according to claim 3, characterized in that, The outer concave arc surface (502) and the inner concave arc surface (504) are flow guiding channels.

5. An air filter inner core assembly according to claim 3 or 4, characterized in that, The extension directions of the convex arc surface (501), concave arc surface (502), convex arc surface (503), and concave arc surface (504) are parallel to the axis of the nano-metal filter (5).

6. An air filter inner core assembly according to claim 3 or 4, characterized in that, The convex arc surface (501), concave arc surface (502), convex arc surface (503), and concave arc surface (504) are spiral-shaped.

7. An air filter inner core assembly according to claim 3 or 4, characterized in that, It also includes an inner inhibition ring (52) and an outer inhibition ring (51) located on the inner and outer walls of the nano-metal filter (5), respectively.

8. An air filter inner core assembly according to claim 1, characterized in that, The geometrically continuous surface is a continuous arcuate surface (5000). The outer wall of the continuous arcuate surface (5000) is formed with an outwardly convex plane (50001) and an outwardly concave plane (50002). The inner wall of the continuous arcuate surface (5000) is formed with an inwardly convex plane (50003) and an inwardly concave plane (50004).

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