Air filter device, manufacturing method thereof, engine system and vehicle

Abstract

The embodiment of the invention provides an air filter device, a manufacturing method of the air filter device, an engine system and a vehicle. The air filter device comprises a spherical cavity and an air outlet pipe section communicating with the spherical cavity; the side wall of the spherical cavity comprises a spherical supporting layer, a spherical filtering layer and a spherical outer wall layer which are sequentially arranged, a plurality of air inlet holes are formed in the side wall of the spherical cavity and penetrate through the spherical supporting layer and the spherical outer wall layer, and after entering the spherical cavity through the air inlet holes, external air is filtered by the spherical filtering layer and then enters the spherical supporting layer; and the air is discharged out of the spherical cavity through the air outlet pipe section. According to the scheme in the embodiment, the air inlet efficiency of the air filter can be remarkably improved, meanwhile, the size of the device is reduced, arrangement and application of the device are facilitated, and the technical problem that arrangement is inconvenient due to the fact that an air filter device is large in size in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of air treatment device technology, and more specifically, to an air filter device and its manufacturing method, an engine system, and a vehicle. Background Technology

[0002] Currently, commonly used automotive air filters mainly consist of upper and lower housings and a filter element. To reduce after-sales costs, when the filter element becomes clogged and affects the air intake, the housing can be disassembled to replace the filter element. In order to obtain a larger air intake, they are generally quite large. When installed in the engine compartment of a vehicle, the large size of the automotive air filter is not conducive to the placement of the filter in the limited space of the engine compartment. Furthermore, traditional automotive air filters require an air intake pipe to introduce air into the air filter inlet, which further increases the overall size of the filter and makes it occupy more space.

[0003] There is currently no good solution to the above problems. Summary of the Invention

[0004] This application provides an air filter device and its manufacturing method, an engine system, and a vehicle, to at least solve the technical problem of inconvenient layout caused by the large size of the air filter device in the prior art.

[0005] According to one aspect of the embodiments of this application, an air filter device is provided, including a spherical cavity and an air outlet pipe section communicating with the spherical cavity. In the radial outward direction of the spherical cavity, the sidewall of the spherical cavity includes a spherical support layer, a spherical filter layer and a spherical outer wall layer arranged sequentially. The sidewall of the spherical cavity is provided with a plurality of air inlets, which are arranged through the spherical support layer and the spherical outer wall layer. In this way, external air enters the spherical cavity through the air inlets, is filtered by the spherical filter layer, and is then discharged to the outside of the spherical cavity through the air outlet pipe section.

[0006] Furthermore, multiple air inlets are evenly spaced along the circumference of the spherical cavity.

[0007] Furthermore, multiple air intakes may be configured with the same diameter, or at least two air intakes may be configured with different diameters.

[0008] Furthermore, multiple air inlets are arranged in an array on the sidewall of the spherical cavity.

[0009] Furthermore, the spherical cavity has multiple connecting ears protruding from its exterior. These connecting ears are evenly spaced along the circumference of the spherical cavity, and the connecting ears are located on the same plane as the center of the spherical cavity.

[0010] Furthermore, the air filter device includes: a housing, comprising a spherical housing section and a cylindrical housing section, the spherical housing section having multiple housing air inlets, and the spherical housing section forming a spherical outer wall layer; a filter support, the filter support being disposed inside the housing, the interior of the filter support being a cavity, the filter support including a spherical support section and a cylindrical support section, the spherical support section having multiple support air inlets on its spherical surface, wherein the support air inlets are correspondingly arranged with the housing air inlets to form air inlets, the spherical support section forming a spherical support layer, the cylindrical housing section correspondingly arranged with the cylindrical support section to form the sidewall of the air outlet section; and a waterproof filter, the waterproof filter being attached to the outer wall surface of the spherical support section, the waterproof filter being located between the housing and the filter support, and the waterproof filter forming a spherical filter layer.

[0011] Furthermore, a sealing structure is provided between the cylindrical outer shell section and the cylindrical support section.

[0012] According to another aspect of the embodiments of this application, a method for manufacturing an air filter device is also provided. The method is used to manufacture the above-mentioned air filter device and includes the following steps: welding two support units to obtain a filter support; pressing a waterproof filter onto the outer peripheral surface of the spherical support section of the filter support to obtain a filter element; pressing the filter element into two housing units respectively; and welding the two housing units after pressing to connect the two housing units into a spherical air filter device.

[0013] According to another aspect of the embodiments of this application, an engine system is also provided, including an air filter device, wherein the air filter device is the air filter device described above.

[0014] According to another aspect of the embodiments of this application, a vehicle is also provided, including an air filter device, wherein the air filter device is the air filter device described above.

[0015] In this embodiment, by opening multiple air inlets on the spherical cavity, 360-degree omnidirectional air intake can be achieved, ensuring a large air intake volume and improving air intake efficiency. At the same time, the spherical structure helps to reduce the volume of the air filter device, providing greater convenience for the arrangement of the air filter device. The solution in this embodiment can significantly improve the air intake efficiency of the air filter while reducing the device volume, which is conducive to the arrangement and application of the device. It solves the technical problem of inconvenient arrangement caused by the large volume of the air filter device in the prior art. Compared with traditional filters, the air filter device in this embodiment can effectively reduce the volume and save space while maintaining a large air intake volume. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an air filter device according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of an air filter device according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram showing the connection between an air filter device according to an embodiment of this application and the vehicle engine compartment;

[0020] Figure 4 This is a schematic diagram of the connection between the air filter device and the vehicle engine compartment in the prior art.

[0021] The above figures include the following reference numerals:

[0022] 1. Outer shell;

[0023] 11. Spherical shell section;

[0024] 110. Air inlet on the outer casing;

[0025] 111. Connecting ear;

[0026] 12. Cylindrical outer shell section;

[0027] 2. Sealed structure;

[0028] 3. Waterproof filter screen;

[0029] 4. Filter support;

[0030] 41. Spherical support section;

[0031] 410. Bracket air inlet;

[0032] 42. Columnar support section;

[0033] 5. Engine intake manifold;

[0034] 6. Traditional air filter;

[0035] 7. Airway. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0037] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Combination Figure 1 and Figure 2 As shown, according to a specific embodiment of this application, an air filter device is provided.

[0039] Specifically, the air filter device includes a spherical cavity and an air outlet pipe section connected to the spherical cavity. Along the radial outward direction of the spherical cavity, the sidewall of the spherical cavity includes a spherical support layer, a spherical filter layer and a spherical outer wall layer arranged in sequence. The sidewall of the spherical cavity is provided with multiple air inlets, which are arranged through the spherical support layer and the spherical outer wall layer. External air enters the spherical cavity through the air inlets, is filtered by the spherical filter layer, and is then discharged to the outside of the spherical cavity through the air outlet pipe section.

[0040] By applying the technical solution of this embodiment, multiple air inlets are opened on the spherical cavity, enabling 360-degree omnidirectional air intake, ensuring a large air intake volume, and improving air intake efficiency. At the same time, the spherical structure helps to reduce the volume of the air filter device, providing greater convenience for the arrangement of the air filter device. The solution in this embodiment can significantly improve the air intake efficiency of the air filter while reducing the device volume, which is conducive to the arrangement and application of the device. It solves the technical problem of inconvenient arrangement caused by the large volume of the air filter device in the prior art. Compared with traditional filters, the air filter device in this embodiment can effectively reduce the volume and save space while maintaining a large air intake volume.

[0041] Preferably, the spherical filter layer is a waterproof filter layer, meaning it allows only air to pass through while blocking water droplets outside the spherical cavity. During use, air passes through the spherical filter layer to remove water molecules and large particulate impurities before entering the spherical cavity and then entering the engine through the exhaust pipe to power the engine for combustion.

[0042] It should be understood that in humid and dusty environments, the spherical filter layer effectively prevents the adhesion of water and impurities. Even if a small amount adheres, it is difficult for it to form a stable accumulation on the surface of the sphere as the vehicle moves, thus achieving a self-cleaning effect for the air filter. When prolonged use causes the surface of the device to become dirty and affects air intake performance, it can be rinsed with appropriately pressurized clean water and then dried to restore its filtering performance. This reduces the maintenance cost of the air filter and extends its service life. Compared to existing air filters that are smaller but have non-replaceable filter elements, the air filter in this embodiment achieves timely cleaning through the combination of a waterproof filter and a spherical structure, reducing maintenance costs.

[0043] The air outlet section and the spherical cavity can be assembled by splicing, or the spherical cavity and the air outlet section can be set as a whole.

[0044] Preferably, multiple air inlets are evenly spaced along the circumference of the spherical cavity. By setting evenly spaced air inlets, air is ensured to enter the spherical cavity uniformly from all directions, avoiding excessive local air intake. This effectively prevents localized blockages caused by uneven air intake during use, extending the device's lifespan. Furthermore, the evenly spaced air inlets allow for more uniform air distribution on the spherical filter layer, thereby improving filtration efficiency.

[0045] Optionally, multiple air inlets can be configured with identical orifice diameters. Having identical orifice diameters ensures that the airflow velocity and volume are the same when entering the spherical cavity from all directions, thereby improving the overall airflow uniformity of the device. Furthermore, identical orifice diameters help reduce airflow turbulence and lower noise levels during airflow.

[0046] When the air outlet of the air filter in this embodiment is connected to the engine intake pipe, the filter with multiple intake holes of the same diameter can help maintain the stable operation of the engine. The uniform intake volume can ensure that the gasoline and air are mixed more thoroughly, improve combustion efficiency, reduce unburned emissions, and maintain the smooth operation of the engine.

[0047] Optionally, at least two air inlets may have different orifice diameters. Larger orifice diameters allow more air to pass through, while smaller orifice diameters effectively block larger particles. By rationally designing the distribution of different orifice diameters, the filtration effect can be improved while maintaining sufficient airflow. The air filtration device in this embodiment can adapt to varying environmental conditions, such as dusty or rainy environments, and can better balance the needs of airflow efficiency and impurity filtration.

[0048] In other embodiments, an adjustable-aperture air inlet can be used to automatically adjust the air intake and filtration efficiency under different operating conditions, thus solving the problem of optimizing air filter performance in dynamic environments. For example, the air inlet of the spherical outer wall layer can be configured with an adjustable opening, allowing the air inlet to have both closed and open states, with multiple opening degrees when open, thereby adjusting the air intake of the air filtration device.

[0049] In one exemplary embodiment of this application, a movable adjusting housing is disposed outside the spherical cavity. This adjusting housing can have a completely closed state (covering all air inlets) and a completely open state (opening all air inlets) to correspond to the non-operating mode and maximum operating mode of the air filtration device. The adjusting housing can also have an intermediate open state (partially opening air inlets and partially covering air inlets), with multiple intermediate open states to obtain different air intake volumes. The adjusting housing is configured as a spherical structure similar in shape to the spherical cavity to reduce the device size.

[0050] Optionally, multiple air inlets are arrayed on the sidewall of the spherical cavity. The arrayed air inlets ensure a more uniform distribution of air on the spherical filter layer, reducing the risk of localized blockage and improving the reliability of the air filter device.

[0051] Furthermore, the spherical cavity is provided with a plurality of connecting ears 111 protruding from the outside. The plurality of connecting ears 111 are evenly spaced along the circumference of the spherical cavity, and the plurality of connecting ears 111 are located on the same plane as the center of the spherical cavity.

[0052] In this embodiment, by providing connecting ears 111 on the outside of the spherical cavity, a stable connection between the air filter device and external structural components (such as vehicles or engine compartments) can be achieved. At the same time, the evenly spaced arrangement of multiple connecting ears 111 helps to maintain the balance of the device. The connecting ears 111 and the center of the sphere are located on the same plane, ensuring that the air filter device can maintain good positioning during installation and is not easy to shake after connection. This improves the installation stability and reliability of the air filter device and reduces performance problems caused by vibration or improper installation.

[0053] In other embodiments, the number and position of the connecting ears 111 can be changed to adapt to the installation requirements of different vehicle models and engines, thus solving the air filter device installation problem in different application scenarios.

[0054] Furthermore, the air filter device includes a housing 1, a filter support 4, and a waterproof filter 3. The housing 1 includes a spherical housing section 11 and a cylindrical housing section 12. The spherical housing section 11 has multiple housing air inlets 110, forming a spherical outer wall layer. The filter support 4 is disposed inside the housing 1, and the interior of the filter support 4 is a cavity. The filter support 4 includes a spherical support section 41 and a cylindrical support section 42. Multiple support air inlets 410 are formed on the spherical surface of the spherical support section 41. The support air inlets 410 are correspondingly arranged with the housing air inlets 110 to form air inlets. The spherical support section 41 forms a spherical support layer, and the cylindrical housing section 12 is correspondingly arranged with the cylindrical support section 42 to form the sidewall of the air outlet section. The waterproof filter 3 is attached to the outer wall of the spherical support section 41 and is located between the housing 1 and the filter support 4, forming a spherical filter layer.

[0055] In this embodiment, a complete air filter device is constructed by the cooperation of the outer shell 1 and the filter support 4, as well as the setting of the waterproof filter 3. The waterproof filter 3 can effectively block water molecules and large particulate impurities, allowing only air to pass through. The spherical structure of the outer shell 1 and the filter support 4 helps to improve the air intake efficiency and filtration uniformity. When the device needs to be cleaned, it can be directly rinsed with a water gun or other equipment to remove impurities, making the device cleaning more convenient.

[0056] Furthermore, a sealing structure 2 is provided between the cylindrical housing section 12 and the cylindrical support section 42. By providing the sealing structure 2 between the cylindrical housing section 12 and the cylindrical support section 42, the airtightness of the air filter device is ensured, effectively preventing air from bypassing the waterproof filter screen 3 and directly entering the air outlet section, thus ensuring the filtration effect of the air filter device and reducing performance problems caused by poor sealing.

[0057] Preferably, the sealing structure 2 is a sealing ring.

[0058] According to another specific embodiment of this application, a method for manufacturing an air filter device is also provided. The method is used to manufacture the above-mentioned air filter device and includes the following steps:

[0059] Step S1: Weld the two support units together to obtain the filter support 4;

[0060] In step S1, the welding process ensures the structural strength of the filter support 4, and the support unit can be integrally molded by injection molding.

[0061] Step S2: Press a waterproof filter screen 3 onto the outer circumferential surface of the spherical support section 41 of the filter screen support 4 to obtain a filter element;

[0062] In step S2, the crimping process ensures that the waterproof filter screen 3 and the filter screen support 4 fit tightly together, thereby improving the filtration performance of the device.

[0063] Step S3: Press the filter element into the two housing units respectively;

[0064] Step S4: Weld the two housing units after press-fitting to connect them into a spherical air filter device.

[0065] In step S4, the welding process ensures the structural strength of the outer shell 1, and the shell unit can be integrally formed by injection molding, die casting or other methods.

[0066] By applying the technical solution of this embodiment, the air filter device can be manufactured and assembled through welding and pressing processes, which effectively improves the manufacturing efficiency and assembly accuracy of the air filter device and reduces errors and costs in the manufacturing process.

[0067] In other embodiments, different manufacturing processes, such as injection molding and threaded connections, can be employed to adapt to the manufacturing requirements of air filter devices with different materials and structures, thereby solving the manufacturing problems of air filter devices under different manufacturing conditions.

[0068] This application also provides a preferred embodiment of an air filter device and a method for manufacturing the same.

[0069] The air filter unit consists of a housing 1, a waterproof filter 3, a sealing ring, and a filter support 4. The waterproof filter 3 and the filter support 4 are joined together by injection molding and then fixed to the housing 1 by the sealing ring. The housing 1 is welded into a non-removable whole by ultrasonic welding. Both the housing 1 and the filter support 4 are spherical and have multiple air inlets. The waterproof filter 3 is sandwiched between the two to form the entire air filter unit.

[0070] The air filter device in this embodiment can solve the following problems of traditional automotive filters:

[0071] 1) Problem of excessive size of traditional car filters: The air filter device in this embodiment has a spherical structure and a multi-hole air intake structure. It does not require the air intake pipe of the traditional filter and can take in air from 360 degrees. In the same arrangement space, the air intake efficiency is increased by at least 90%, and the size is minimized, providing more space for the engine compartment.

[0072] 2) The problem of traditional car filters requiring filter element or complete replacement: The waterproof filter 3 in this embodiment is made of waterproof material, making it difficult for water molecules and large particles to pass through, allowing only air to pass through; the waterproof filter 3 has a spherical structure, making it difficult for dirt to adhere to the spherical filter screen, and has self-cleaning ability. If the surface of the waterproof filter 3 becomes dirty and clogs the air intake due to long-term use, it is not necessary to replace the filter screen, but can be cleaned by rinsing with appropriately pressurized clean water.

[0073] 3) Cost issues of traditional automotive air filters: Traditional replaceable air filters require regular filter replacement; otherwise, they will mold or become clogged and unusable. Non-replaceable air filters, on the other hand, require complete replacement when fully clogged, resulting in high after-sales costs. The air filter device in this embodiment has a compact structure, requiring only connection to the engine intake pipe and eliminating the need for a bleed pipe. It does not require complete replacement when dirty; simply rinsing with water is sufficient. Its usage and maintenance costs are significantly lower than traditional automotive air filters.

[0074] The manufacturing process of the air filter device and its assembly with the vehicle in this embodiment are as follows:

[0075] The filter support 4 is divided into two hemispheres and is formed by injection molding and then fixed together by ultrasonic welding. The waterproof filter 3 is bonded to the filter support 4 by pressing, and then a sealing ring is put on and pressed into the outer shell 1. The outer shell 1 is fixed together with the upper and lower hemispheres by ultrasonic welding to form the air filter device in this embodiment.

[0076] When installing the air filter, first fix it to the vehicle body, engine or transmission through the three fixing holes on the air filter device (the fixing holes opened on the aforementioned connecting ear 111). Then connect one end of the engine intake pipe to the air outlet of the air filter device and the other end to the air inlet of the engine. The assembly is then complete.

[0077] During operation, air enters through the spherical opening of the air filter device, passes through the waterproof filter screen 3 and the filter screen bracket 4, enters the engine intake pipe through the outlet end of the air filter device, and then enters the engine through the engine intake pipe to be used for engine combustion and power generation.

[0078] Figure 3 This diagram illustrates the connection between the air filter device and the vehicle engine compartment in this embodiment. The air outlet section of the air filter device is directly connected to the engine intake pipe 5. Figure 4The diagram illustrates the connection between an air filter device and the vehicle engine compartment in the prior art. A conventional air filter 6 intakes air through an air intake pipe 7, and its outlet is connected to the engine intake pipe 5. In the prior art, the normal intake air volume range for most engines is 1000-1500 g / s, approximately 500-800 g / s at idle, and can reach 1500-2000 g / s at full speed. While meeting this intake air volume requirement, the air filter device in this embodiment has a relatively small volume. Figure 4 The volume of the traditional air filter shown is reduced by 50% to 70%, and the intake efficiency is increased by more than 60%.

[0079] When a vehicle is driving in an environment with excessive particulate matter and rain, the spherical air filter device can effectively prevent the adhesion of particulate matter and rain. Even if there is any adhered particulate matter and rain, it is difficult for them to adhere to the surface of the sphere as the vehicle moves. Therefore, it can maintain the cleanliness of the air intake to the maximum extent and achieve the purpose of self-cleaning.

[0080] When prolonged use leads to dirt affecting air intake performance, the air filter can be removed, cleaned with a pressure water gun, and dried to achieve reuse. The estimated replacement cycle can reach 3-5 years or longer, thus solving the after-sales cost problem of the air filter.

[0081] According to another specific embodiment of this application, an engine system is also provided, including an air filter device, which is the air filter device in the above embodiment.

[0082] In this embodiment, the air filter device described above is integrated into the engine system. The high-efficiency filtration and large air intake capacity of the air filter device can provide the engine with cleaner air, improve the engine intake efficiency, thereby improving the engine's combustion efficiency and power performance, improving the engine's reliability and service life, and solving the problem of engine performance degradation and maintenance costs caused by air filter failure.

[0083] In other embodiments, the air filter device can be integrated with other engine systems, such as the intake manifold and turbocharger, to further optimize the engine's intake system and solve the problem of air filter device integration under different engine configurations.

[0084] According to another specific embodiment of this application, a vehicle is also provided, including an air filter device, which is the air filter device in the above embodiment.

[0085] In this embodiment, by installing the aforementioned air filter device on the vehicle, the vehicle's intake efficiency and reliability are improved, which can significantly improve the overall performance and service life of the vehicle, reduce the vehicle performance degradation and maintenance costs caused by air filter failure, and at the same time, the spherical structure of the air filter device reduces the space occupied in the engine compartment, which is beneficial to the integration of vehicle components.

[0086] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0087] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0088] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0089] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0090] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0091] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air filter device, characterized in that, The device includes a spherical cavity and an air outlet pipe section communicating with the spherical cavity. Along the radial outward direction of the spherical cavity, the sidewall of the spherical cavity includes a spherical support layer, a spherical filter layer, and a spherical outer wall layer arranged sequentially. The sidewall of the spherical cavity has multiple air inlets, which are arranged to penetrate the spherical support layer and the spherical outer wall layer. External air enters the spherical cavity through the air inlets, is filtered by the spherical filter layer, and is then discharged to the outside of the spherical cavity through the air outlet pipe section.

2. The air filter device according to claim 1, characterized in that, The multiple air inlets are evenly spaced along the circumference of the spherical cavity.

3. The air filter device according to claim 1, characterized in that, The multiple air inlets are provided with the same diameter, or at least two of the air inlets are provided with different diameters.

4. The air filter device according to claim 1, characterized in that, Multiple air inlets are arranged in an array on the sidewall of the spherical cavity.

5. The air filter device according to claim 1, characterized in that, The spherical cavity is provided with a plurality of connecting ears (111) protruding from the outside. The plurality of connecting ears (111) are evenly spaced along the circumference of the spherical cavity, and the plurality of connecting ears (111) are located on the same plane as the center of the spherical cavity.

6. The air filter device according to any one of claims 1-5, characterized in that, The air filter device includes: The outer shell (1) includes a spherical outer shell section (11) and a cylindrical outer shell section (12). The spherical outer shell section (11) has multiple outer shell air inlets (110) and forms the spherical outer wall layer. A filter support (4) is disposed inside the outer shell (1). The interior of the filter support (4) is a cavity. The filter support (4) includes a spherical support section (41) and a cylindrical support section (42). Multiple support air inlets (410) are opened on the spherical surface of the spherical support section (41). The support air inlets (410) are correspondingly arranged with the outer shell air inlet (110) to form the air inlet hole. The spherical support section (41) forms the spherical support layer. The cylindrical outer shell section (12) is correspondingly arranged with the cylindrical support section (42) to form the side wall of the air outlet section. Waterproof filter (3) is attached to the outer wall of the spherical support section (41). The waterproof filter (3) is located between the outer shell (1) and the filter support (4). The waterproof filter (3) forms the spherical filter layer.

7. The air filter device according to claim 6, characterized in that, A sealing structure (2) is also provided between the cylindrical outer shell section (12) and the cylindrical support section (42).

8. A method for manufacturing an air filter device, characterized in that, The method is used to manufacture the air filter device according to any one of claims 1-7, and the method includes the following steps: Two support units are welded together to obtain a filter support (4). A waterproof filter screen (3) is pressed onto the outer circumferential surface of the spherical support section (41) of the filter screen support (4) to obtain a filter element; The filter elements are press-fitted into the two housing units respectively; The two housing units, after being press-fitted, are welded together to form a spherical air filter device.

9. An engine system, characterized in that, Includes an air filter device, wherein the air filter device is the air filter device according to any one of claims 1-7.

10. A vehicle, characterized in that, Includes an air filter device, wherein the air filter device is the air filter device according to any one of claims 1-7.

Images