An air filter device

Abstract

The utility model provides an air filter device, including base body shell and filter medium body, base body shell is composed of the cover body and lower cover plate of the type, the cover body contains upper cover plate and front side plate and rear side plate, the cover body forms the outflow side for the fluid output of waiting for filtering in left side and right side, filter medium body contains two air filter filter core with zigzag folding, is used for respectively installing in the left side and right side of the cover body and lower cover plate of the type, air filter filter core is intercepted in the outflow side along the transverse, makes base body shell be configured as the internal box body structure, upper cover plate corresponds and is equipped with the flange plate of forming a passageway mouth part, flange plate is used for separating the outside exhaust side and internal filter space, like this only allows the fluid along the passageway mouth part to input to the filter space to the fluid along the outflow side to the outside clean side after filtering processing through air filter filter core, thereby increases the effective filter area, promotes the dust capacity and the service life of filter core.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, to an air filter device. Background Technology

[0002] Currently, air filter elements used in engine intake systems can filter outside air to prevent dust, particulate matter, and impurities from entering the engine along with the airflow, thereby causing wear on components such as valves and cylinders and leading to a decline in engine performance.

[0003] Currently, most air filters employ a box-type housing and a single filter element structure. This often results in problems such as inconvenient connection and insufficient sealing at the junction of the housing and cover, significantly impacting filtration efficiency. Furthermore, due to the relatively simple filter element arrangement, the effective filtration area per unit volume is limited, frequently leading to uneven filtration speed, localized blockage, or excessive pressure drop during actual use. This shortens filter life and affects engine intake efficiency. Moreover, existing air filters generally have complex structures and require numerous disassembly and assembly steps during installation and maintenance, hindering quick filter element replacement.

[0004] In particular, the existing cover shape and flow channel cannot effectively isolate the air intake side from the clean side, resulting in short-circuit flow or backflow. Furthermore, the effective filtration area of ​​filter elements arranged in a single or linear configuration is limited. To reduce resistance, filtration efficiency or dust capacity is often sacrificed, and the filter element and housing do not form a good flow interception, causing excessive load and uneven filtration speed in some areas of the filter element, thereby greatly reducing service life and dust holding capacity. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an air filter device to solve the above problems.

[0006] The present invention adopts the following solution: This application provides an air filter device suitable for filtering air in an engine intake system. The air filter device includes a base housing and a filter media body disposed within the base housing. The base housing is composed of a U-shaped cover and a lower cover plate. The U-shaped cover includes an upper cover plate forming an inflow side, and front and rear side plates connected to the lower cover plate. The U-shaped cover forms outflow sides on its left and right sides for outputting the fluid to be filtered. The filter media body includes two air filter elements with serrated folds, respectively installed on the left and right sides of the U-shaped cover and the lower cover plate. The air filter elements are laterally intercepted on their respective outflow sides, causing the base housing to be constructed as an internal box structure. The upper cover plate is correspondingly provided with a flange plate forming a channel opening. The flange plate separates the external exhaust side from the internal filtration space, thereby allowing only the fluid to be filtered to enter the filtration space along the channel opening, and the filtered fluid is output to the external clean side along the outflow side through the air filter elements.

[0007] As a further improvement, the flange plate is used to connect to the exhaust system, and a reinforcing ring is installed on the inner wall of the channel opening.

[0008] As a further improvement, the flange plate is a hollow cylinder integrally formed on the upper cover plate, and the reinforcing ring is correspondingly and tightly embedded in the inner side of the upper end of the cylindrical plate, for firmly supporting it in the flange plate and sealingly connecting it to the exhaust system.

[0009] As a further improvement, the reinforcing ring is made of metal, its thickness is less than that of the hollow cylinder, and its outer diameter is comparable to that of the hollow cylinder's inner diameter.

[0010] As a further improvement, the front side plate and the rear side plate are integrally formed on both ends of the upper cover plate, and multiple supporting ribs integrally formed on the inner and outer sides of the respective side plates are connected at the joint between the side plates and the cover plate.

[0011] As a further improvement, the air filter element is correspondingly interference-fitted between the upper cover plate and the lower cover plate, and the air filter element is folded in a serrated manner so that its front end and rear end are tightly and elastically abutted against the front side plate and the rear side plate, respectively.

[0012] As a further improvement, the upper cover plate and the lower cover plate are provided with installation guide grooves on their inner surfaces that are adapted to the air filter element, for quick installation and positioning of the air filter element; and two rows of reinforcing ribs are provided on the outer surface of the upper cover plate that are aligned with the internal guide grooves.

[0013] As a further improvement, the upper cover plate is provided with a fan-shaped protrusion that connects with the flange plate. The fan-shaped protrusion and the flange plate are centrally located on the upper cover plate in the transverse direction and are arranged to avoid each other from the reinforcing ribs.

[0014] As a further improvement, the C-shaped cover is integrally injection molded, correspondingly forming the flange plate, fan-shaped protrusion, and reinforcing ribs.

[0015] As a further improvement, the fan-shaped protrusion is disposed adjacent to the flange plate and its inflow side to rapidly increase the input volume of the fluid to be filtered.

[0016] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. The air filter device of this application, by forming the base shell with an inverted cover and a lower cover plate, makes the upper cover plate of the inverted cover form the air inlet side, while the left and right sides serve as the filtered outflow sides, so that the base shell is formed as an internal box structure. The filter medium uses two air filter elements with serrated folds respectively set on the left and right sides, and intercepted laterally on their respective outflow sides, thereby increasing the effective filtration area and improving the dust holding capacity and service life of the filter elements.

[0017] 2. By setting a flange plate at the top cover to form the channel opening, the external exhaust side can be isolated from the internal filtration space, so that the air to be filtered can enter the filtration space according to the defined path and enter the outlet side through each air filter element. This effectively avoids bypass and short-path flow of air when entering or filtering, ensuring the stability and effectiveness of the filtration effect.

[0018] 3. By rationally arranging the U-shaped cover and channel opening, as well as the two serrated folded filter elements, the air filtration path is clear and evenly distributed, which can significantly reduce air bypass, reduce air intake resistance, improve filtration efficiency, and enhance the sealing performance and vibration resistance of the overall structure. The air filter device has a simple structure, which is conducive to simplifying the manufacturing process and improving assembly convenience. It has strong practical value and prospects for promotion and application. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the air filter device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the air filter device according to an embodiment of the present invention from other perspectives; Figure 3 This is a disassembly diagram of the air filter device according to an embodiment of the present invention; Figure 4 This is a cross-sectional view of an air filter device according to an embodiment of the present invention.

[0020] icon: 1-Base shell; 2-Filter media body; 3-Lower cover plate; 4-Upper cover plate; 5-Front side plate; 6-Rear side plate; 7-Air filter element; 8-Flange plate; 9-Reinforcing ring; 10-Supporting rib; 11-Reinforcing rib; 12-Fan-shaped protrusion; 13-Mounting guide groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0022] Example Combination Figures 1 to 4 This embodiment provides an air filter device suitable for air filtration of an engine intake system.

[0023] The air filter device includes a base housing 1 and a filter media body 2 disposed on the base housing 1. The base housing 1 is composed of a U-shaped cover and a lower cover plate 3. The U-shaped cover includes an upper cover plate 4 forming an inflow side, and a front side plate 5 and a rear side plate 6 connected to the lower cover plate 3. The U-shaped cover forms an outflow side on the left and right sides for the output of the fluid to be filtered. The filter media body 2 includes two air filter elements 7 with serrated folds, which are respectively installed on the left and right sides of the U-shaped cover and the lower cover plate 3. The air filter elements 7 are laterally intercepted on their respective outflow sides, so that the base housing 1 is constructed as an internal box structure. The upper cover plate 4 is correspondingly provided with a flange plate 8 forming a channel opening. The flange plate 8 is used to separate the external exhaust side from the internal filtration space, thereby allowing only the fluid to be filtered to enter into the filtration space along the channel opening, and the filtered fluid is output to the external clean side along the outflow side through the air filter elements 7.

[0024] The air filter device described above is constructed by using a U-shaped cover and a lower cover plate 3 to form the base shell 1. The upper cover plate 4 of the U-shaped cover forms the air inlet side, while the left and right sides serve as the outlet sides after filtration. This makes the base shell 1 an internal box structure. The filter medium consists of two air filter elements 7 with serrated folds, which are respectively arranged on the left and right sides and intercepted laterally on their respective outlet sides. This increases the effective filtration area and improves the dust holding capacity and service life of the filter elements.

[0025] A flange plate 8 is provided at the top cover plate 4 to form the channel opening, which can isolate the external exhaust side from the internal filtration space, so that the air to be filtered can enter the filtration space according to the defined path and enter the outlet side through each air filter element 7. This effectively avoids bypass and short-path flow of air when entering or filtering, ensuring the stability and effectiveness of the filtration effect.

[0026] The air filter device features a rationally arranged shaped cover and channel opening, as well as two serrated pleated filter elements, resulting in a clear and evenly distributed air filtration path. This significantly reduces air bypass, lowers intake resistance, improves filtration efficiency, and enhances the overall sealing performance and vibration resistance. The air filter device has a simple structure, which helps simplify the manufacturing process and improve assembly convenience, making it highly practical and promising for widespread application.

[0027] like Figure 3 and Figure 4 As shown, in this embodiment, the flange plate 8 is used to connect to the exhaust system, and a reinforcing ring 9 is correspondingly installed on the inner wall of the passage opening. This enhances the sealing and mechanical support performance of the inlet / outlet interface. The flange plate 8 can achieve a reliable connection with the external exhaust structure, preventing leakage at the interface. Furthermore, the reinforcing ring 9 strengthens the wall strength and deformation resistance of the passage opening, maintaining interface stability under the vibration and thermal expansion and contraction conditions during engine operation, thereby further reducing air bypass, improving sealing reliability, and extending the service life of the device. In addition, the reinforcing ring 9 further serves as a positioning support surface for the seal or connector, facilitating quick assembly and disassembly and standardized interfaces, improving manufacturing and maintenance convenience.

[0028] Furthermore, the flange plate 8 is a hollow cylinder integrally formed on the upper cover plate 4, and the reinforcing ring 9 is correspondingly and tightly fitted into the inner side of the upper end of the cylindrical plate, for firmly supporting it within the flange plate 8 and sealing it to the exhaust system. By setting the flange plate 8 of the upper cover plate 4 as a hollow cylinder integrally formed with the upper cover plate 4, and by tightly fitting the reinforcing ring 9 into the inner side of the upper end of the cylinder, the mechanical support and sealing reliability at the interface between the flange and the exhaust system are further improved.

[0029] Specifically, the hollow cylindrical flange plate 8, as the main component for force transmission and positioning, can maintain its geometric shape and provide a stable positioning surface under assembly and working loads. The reinforcing ring 9, embedded on the inner side of the upper end of the cylinder, supports and reinforces the upper wall of the flange plate 8, preventing the cylinder from undergoing local deformation or fatigue failure under assembly tightening, vibration, or thermal expansion and contraction.

[0030] Meanwhile, the reinforcing ring 9 can be configured as an annular support with a sealing groove to install rubber or silicone sealing rings, thereby achieving a reliable sealed connection with the external exhaust system. This not only withstands radial and axial loads at the interface and wear caused by repeated assembly and disassembly, but also ensures sealing and mechanical reliability during long-term operation, thereby further reducing air bypass and improving the processing efficiency of the filtration device.

[0031] Preferably, the reinforcing ring 9 is made of metal, with a thickness less than that of the hollow cylinder and an outer diameter roughly equal to the inner diameter of the hollow cylinder. This ensures that the reinforcing ring 9 maintains sufficient strength and rigidity to provide support without causing excessive local wall thickness in the hollow cylinder or assembly interference, thus facilitating the stability of the overall structural dimensions and control of manufacturing tolerances. Furthermore, the metal material further enhances its fatigue resistance, deformation resistance, and wear resistance, maintaining a stable shape and sealing condition even under long-term use under high-temperature and vibration conditions. This improves the support strength and sealing reliability of the flange plate 8 interface, reduces air leakage at the connection, and extends service life.

[0032] In this embodiment, the front side plate 5 and the rear side plate 6 are integrally formed on both ends of the upper cover plate 4. Multiple supporting ribs 10, integrally formed on the inner and outer sides of the respective side plates, are connected at the joint between the side plates and the cover plate. This significantly improves the overall strength and stability of the structure when the front side plate 5 and the rear side plate 6 bear the pressure of the exhaust system connector. Simultaneously, the supporting ribs 10 are arranged on the inner and outer sides of their respective side plates, which helps to enhance the deformation resistance of the connection area between the side plate and the cover plate, preventing structural twisting or loosening when the exhaust channel is heated or vibrated, thereby further improving the reliability of the connection between the cover assembly and the exhaust system.

[0033] In this embodiment, the air filter element 7 is interference-fitted between the upper cover plate 4 and the lower cover plate 3, and the air filter element 7 is folded in a serrated manner so that its front end and rear end are tightly and elastically abutted against the front side plate 5 and the rear side plate 6, respectively. Obviously, by interfering-fitting the air filter element 7 between the upper cover plate 4 and the lower cover plate 3 and adopting a serrated folding structure, the front end and rear end of the air filter element 7 are elastically abutted against the front side plate 5 and the rear side plate 6, respectively. This not only ensures that the air filter element 7 maintains a stable position within the housing and avoids displacement under airflow impact or vibration conditions, but also utilizes the elasticity of the folded part to form a reliable fit with the side plates, thereby improving the filtration sealing and preventing bypass airflow, further ensuring filtration efficiency and exhaust cleanliness.

[0034] In a preferred embodiment, the upper cover plate 4 and the lower cover plate 3 are respectively provided with mounting guide grooves 13 on their inner surfaces, which are adapted to the air filter element 7, for quick installation and positioning of the air filter element 7. By providing mounting guide grooves 13 adapted to the air filter element 7 on the inner surfaces of the upper cover plate 4 and the lower cover plate 3, the air filter element 7 can be directly guided to a predetermined position and fixed during installation, thereby simplifying the assembly operation and improving the accuracy and stability of the filter element assembly. Furthermore, two rows of reinforcing ribs 11 are provided on the outer surface of the upper cover plate 4, which are aligned with the internal guide grooves. These ribs strengthen the overall structure of the cover, allowing the cover to maintain minimal deformation under airflow impact, suction negative pressure, or structural stress, thereby further improving the strength and reliability of the entire device.

[0035] In this embodiment, the upper cover plate 4 is provided with a fan-shaped protrusion 12 that connects with the flange plate 8. The fan-shaped protrusion 12 and the flange plate 8 are centrally located in the upper cover plate 4 along the transverse direction and are arranged to avoid interference with the reinforcing rib 11. The fan-shaped protrusion 12 forms an integral transition structure between the flange plate 8 and the upper cover plate 4, thereby further improving the structural strength and supporting rigidity of the upper cover plate 4 and the flange plate 8. It can be understood that the reinforcing rib 11 provides support for the plate while avoiding interference with the fan-shaped protrusion 12, thereby ensuring that the flange plate 8 can maintain a stable and sealed connection when connected to the exhaust system.

[0036] Preferably, the C-shaped cover is integrally injection molded, correspondingly forming the flange plate 8, the fan-shaped protrusion 12, and the reinforcing rib 11. Clearly, integral injection molding avoids the risks of deformation, misalignment, and leakage associated with multi-component assembly, giving the filter device higher structural stability when subjected to engine intake air pulsation pressure, vibration, and temperature shocks. It also reduces assembly steps and the number of parts, which helps improve production efficiency, reduce manufacturing costs, and ensure the sealing and durability of the outer shell.

[0037] The fan-shaped protrusion 12 is adjacent to the flange plate 8 and its inflow side to rapidly increase the input volume of the fluid to be filtered. By arranging the fan-shaped protrusion 12 adjacent to the flange plate 8 and its inflow side, the fan-shaped protrusion 12 forms a corresponding air intake expansion area in its structure. This allows for a rapid increase in the input volume of the fluid to be filtered without changing the overall shell size, thereby effectively increasing the air intake channel area entering the filtration space.

[0038] This allows for more adequate air input when the engine intake volume changes or the instantaneous intake pressure increases, reducing the flow resistance at the front end of the filter element, further improving filtration efficiency and the stability of intake air volume, and preventing engine performance degradation due to insufficient intake.

[0039] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. An air filter device suitable for filtering air in an engine intake system; characterized in that, The air filter device includes a base housing and a filter media body disposed in the base housing; The base shell is composed of an inverted cover and a lower cover plate. The inverted cover includes an upper cover plate for forming an inflow side, and a front side plate and a rear side plate that are connected to the lower cover plate. The inverted cover has an outflow side for the output of the fluid to be filtered on the left and right sides. The filter media body includes two air filter elements with serrated folds, which are respectively installed on the left and right sides of the U-shaped cover and the lower cover plate; the air filter elements intercept the outflow side laterally, so that the base shell is constructed as an internal box structure. The upper cover plate is provided with a flange plate forming a channel opening. The flange plate is used to separate the external exhaust side from the internal filtration space, so that only the fluid to be filtered is allowed to enter the filtration space along the channel opening, and the filtered fluid is output to the external clean side along the outflow side through the air filter element.

2. The air filter device according to claim 1, characterized in that, The flange plate is used to connect to the exhaust system, and a reinforcing ring is installed on the inner wall of the channel opening.

3. The air filter device according to claim 2, characterized in that, The flange plate is a hollow cylinder integrally formed on the upper cover plate, and the reinforcing ring is correspondingly and tightly embedded in the inner side of the upper end of the cylindrical plate, which is used to firmly support it in the flange plate and seal it to the exhaust system.

4. The air filter device according to claim 3, characterized in that, The reinforcing ring is made of metal, and its thickness is less than that of the hollow cylinder, while its outer diameter is approximately equal to the inner diameter of the hollow cylinder.

5. The air filter device according to claim 3, characterized in that, The front and rear side plates are integrally formed on both ends of the upper cover plate, and multiple supporting ribs integrally formed on the inner and outer sides of the respective side plates are connected at the joint between the side plates and the cover plate.

6. The air filter device according to claim 1, characterized in that, The air filter element is correspondingly interference-fitted between the upper cover plate and the lower cover plate, and the air filter element is folded in a serrated manner so that its front end and rear end are tightly and elastically abutted against the front side plate and the rear side plate, respectively.

7. The air filter device according to claim 6, characterized in that, The upper and lower cover plates have corresponding installation guide grooves on their inner surfaces that are adapted to the air filter element for quick installation and positioning of the air filter element; the outer surface of the upper cover plate has two rows of reinforcing ribs that are aligned with the internal guide grooves.

8. The air filter device according to claim 7, characterized in that, The upper cover plate is provided with a fan-shaped protrusion that connects with the flange plate. The fan-shaped protrusion and the flange plate are centrally located on the upper cover plate in the transverse direction and are arranged to avoid each other with the reinforcing ribs.

9. The air filter device according to claim 8, characterized in that, The shaped cover is integrally injection molded, and the flange plate, fan-shaped protrusion and reinforcing rib are formed accordingly.

10. The air filter device according to claim 8, characterized in that, The fan-shaped protrusions are adjacent to the flange plate and its inflow side to rapidly increase the input volume of the fluid to be filtered.

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