An automobile engine air cleaner

Abstract

The utility model discloses an air cleaner of automobile engine, including the shell, its characterized in that, is provided with filter assembly in the shell, and the top of shell is equipped with the central pipe, filter assembly includes the upper end cover and lower end cover of interval arrangement, is equipped with the through -hole of central pipe crossing on the upper end cover, is equipped with the support net between the upper end cover and lower end cover, the inboard of support net is equipped with the first filter paper, and the first filter paper is transverse folding shape, the outboard of support net is equipped with the second filter paper, and the second filter paper is longitudinal folding shape, and the both ends of support net, first filter paper and second filter paper are fixedly connected with upper end cover and lower end cover respectively, the utility model discloses is equipped with the support net between the upper end cover and lower end cover, and the inboard of support net is equipped with the first filter paper, and the first filter paper is transverse folding shape, can effectively intercept most particulate impurities in air, and the outboard of support net is equipped with the second filter paper, and the second filter paper shows longitudinal folding shape, and the remaining impurities in air are filtered secondly, thereby improve the filter quality of filter.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine air filter, specifically an air filter for automobile engines. Background Technology

[0002] An engine filter is a device used to filter impurities and waste generated during engine operation. Depending on the object being filtered, engine filters can be divided into three types: air filters, oil filters, and fuel filters. An air filter is a type of filter primarily used in engineering vehicles, automobiles, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms. It removes dust, sand, and other impurities from the air, ensuring that sufficient clean air enters the cylinders, thereby protecting the normal operation of the engine.

[0003] However, existing air filter elements have a single-layer structure, which is insufficient to adsorb fine particulate matter in the air, resulting in the filtered air still containing fine particulate matter and failing to meet the engine's air supply requirements. Utility Model Content

[0004] The purpose of this invention is to provide an air filter for an automobile engine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An air filter for an automotive engine includes a housing, a filter assembly disposed inside the housing, and a central tube provided at the top of the housing;

[0007] The filter assembly includes an upper end cover and a lower end cover spaced apart. The upper end cover has a through hole through which a central tube passes. A support mesh is provided between the upper end cover and the lower end cover. A first filter paper is provided on the inner side of the support mesh. The first filter paper is folded laterally. A second filter paper is provided on the outer side of the support mesh. The second filter paper is folded longitudinally. The two ends of the support mesh, the first filter paper, and the second filter paper are fixedly connected to the upper end cover and the lower end cover, respectively.

[0008] Furthermore, the bottom of the upper cover is provided with a plurality of pillars, which are arranged in a circular array and distributed on the inner side of the first filter paper, and the outer walls of the plurality of pillars abut against the first filter paper.

[0009] Furthermore, the bottom of the lower end cover is provided with a placement groove, and a pre-tensioning spring is fixedly connected in the placement groove. The other end of the pre-tensioning spring abuts against the inner wall of the outer shell.

[0010] Furthermore, the central tube extends below the through hole, the inner wall of the through hole is provided with an annular groove, the annular groove is provided with a sealing ring, and the inner side of the sealing ring abuts against the outer wall of the central tube.

[0011] Furthermore, the bottom of the outer shell is provided with an upwardly extending limiting ring, and the center of the placement groove is provided with a limiting post into which the limiting ring is inserted, and the outer wall of the limiting post is in contact with the inner wall of the limiting ring.

[0012] The beneficial effects of this utility model are:

[0013] This invention features a support mesh between the upper and lower end covers. A first filter paper, laterally folded with its folds extending perpendicular to the outer shell axis, effectively intercepts most particulate impurities in the air. A second filter paper, longitudinally folded with its folds parallel to the outer shell axis, performs secondary filtration of any remaining impurities in the air. During operation, air enters the filter assembly through the central tube, passing sequentially through the first filter paper, the support mesh, and the second filter paper, ultimately delivering clean air to the engine. This enhances the impurity interception capability and effectively extends the engine's service life.

[0014] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0015] Figure 1 : Overall structural diagram of this utility model.

[0016] Figure 2 : A cross-sectional view of this utility model.

[0017] Figure 3 : Structural diagram of the filter assembly of this utility model.

[0018] Figure 4 : Exploded view of the filter component of this utility model.

[0019] Reference numerals: 1. Outer shell; 2. Filter assembly; 3. Central tube; 4. Preload spring; 11. Limiting ring; 21. Upper end cover; 22. Lower end cover; 23. Through hole; 24. Support mesh; 25. First filter paper; 26. Second filter paper; 27. Support column; 28. Placement groove; 29. ​​Limiting post; 211. Annular groove; 212. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please refer to Figure 1-4 ;

[0022] An automotive engine air filter includes a housing 1 with a accommodating space, a filter assembly 2 disposed within the housing 1, and a central tube 3 communicating with the filter assembly 2 at the top of the housing 1. The filter assembly 2 includes an upper end cover 21 and a lower end cover 22 spaced apart, wherein the upper end cover 21 has a through hole 23 through which the central tube 3 passes. A support mesh 24 is disposed between the upper end cover 21 and the lower end cover 22. A first filter paper 25 is disposed on the inner side of the support mesh 24. The first filter paper 25 is laterally folded, and its folds extend perpendicularly to the axis of the housing 1, effectively intercepting most particulate impurities in the air. A second filter paper 26 is disposed on the outer side of the support mesh 24. The second filter paper 26 is longitudinally folded, and its folds extend parallel to the axis of the housing 1, enabling secondary filtration of residual impurities in the air, thereby improving the filtration quality of the filter. The two ends of the support mesh 24, the first filter paper 25, and the second filter paper 26 are fixedly connected to the upper end cover 21 and the lower end cover 22, respectively. Preferably, the two ends of the support mesh 24, the first filter paper 25, and the second filter paper 26 are sealed and fixed to the upper end cover 21 and the lower end cover 22 by an adhesive bonding process, forming a structurally stable filter assembly 2. The first filter paper 25 is attached to the inner wall surface of the support mesh 24, and the second filter paper 26 is attached to the outer wall surface of the support mesh 24. The two together form a double-layer filtration structure that progresses step by step from the inside to the outside. During operation, air enters the filter assembly 2 through the central pipe 3. Inside the filter assembly 2, it first passes through the first filter paper 25, which traps most of the particulate impurities. Then, it passes through the support mesh 24 to the second filter paper 26. The second filter paper 26 performs a secondary filtration of any remaining impurities in the air after the first filtration. Finally, the filtered clean air is delivered to the engine to ensure efficient and clean combustion. By filtering out dust, particulate matter, and other impurities from the air entering the engine through the filter assembly 2, these impurities are prevented from entering the combustion chamber, thus protecting internal engine components from wear and carbon buildup, ensuring complete fuel combustion, improving engine efficiency, reducing harmful emissions, and helping to extend engine life, thereby enhancing vehicle performance. The dual-layer filtration structure of the first filter paper 25 and the second filter paper 26 enhances the air filter's ability to intercept impurities, effectively extending engine life.

[0023] Furthermore, both the first filter paper 25 and the second filter paper 26 are preferably made of high-performance synthetic fiber filter media, such as nonwoven fabrics formed from polyester (PET), polypropylene (PP), or glass fiber through wet or melt-blown processes. These materials possess characteristics such as uniform fiber distribution, high porosity, good mechanical strength, resistance to damp heat, and resistance to chemical corrosion, ensuring long-term stable operation in the harsh engine compartment environment. The first filter paper 25 and the second filter paper 26 are coated with a hydrophobic treatment agent, such as polytetrafluoroethylene (PTFE) dispersion or acrylic resin, which effectively repels moisture and oil mist, preventing premature clogging of the filter paper due to the absorption of moisture or oil, thereby maintaining a consistently stable impurity interception capacity.

[0024] In this embodiment, the bottom of the upper cover 21 is provided with a plurality of support pillars 27. The support pillars 27 are arranged in a circular array and distributed on the inner side of the first filter paper 25. The outer walls of the support pillars 27 all abut against the first filter paper 25. The support pillars 27 physically limit the other side of the first filter paper 25 to enhance the structural stability of the first filter paper 25 and prevent it from shifting under the impact of high-speed airflow. At the same time, the circular array layout of the support pillars 27 can achieve uniform force distribution and ensure the overall structural stability of the filter assembly 2.

[0025] In this embodiment, the bottom of the lower end cover 22 is provided with a placement groove 28, and a pre-tension spring 4 is fixedly connected in the placement groove 28. The other end of the pre-tension spring 4 abuts against the bottom of the outer shell 1. The pressure generated by the elastic deformation of the pre-tension spring 4 can continuously apply an upward supporting force to the filter assembly 2. When the filter is subjected to external vibration and impact, the pre-tension spring 4 can effectively buffer the impact energy and maintain the continuous support for the filter assembly 2, ensuring that the communication between the filter assembly 2 and the central tube 3 is not affected.

[0026] Furthermore, the outer casing 1 of this application consists of an upper casing and a lower casing, which are detachably installed by means of snap-fit ​​or screw connection and sealed by a sealing ring 212. When the filter assembly 2 needs to be replaced, the upper casing is removed first. After the upper casing is removed, the pre-tension spring 4 will push the filter assembly 2 upward until its top protrudes from the top of the lower casing, which facilitates the maintenance personnel to quickly remove the old filter assembly 2 and install the new filter assembly 2, improving replacement efficiency. It should be noted that since the pre-tension spring 4 is fixedly connected to the placement groove 28, when the filter assembly 2 is removed for replacement, the pre-tension spring 4 is also removed and replaced together, to avoid the pre-tension spring 4 from affecting the support effect on the filter assembly 2 due to fatigue deformation or decreased elasticity after long-term use.

[0027] In this embodiment, the central tube 3 extends below the through hole 23. The inner wall of the through hole 23 is provided with an annular groove 211, and a sealing ring 212 is provided on the annular groove 211. The inner side of the sealing ring 212 abuts against the outer wall of the central tube 3. By setting the sealing ring 212, the connection between the central tube 3 and the upper end cover 21 can be effectively sealed, preventing air from leaking directly from the gap between the central tube 3 and the through hole 23 when entering the filter assembly 2. This ensures that all air is filtered by the filter assembly 2 before entering the engine, thus ensuring the filtration effect of the air filter.

[0028] In this embodiment, the bottom of the outer shell 1 is provided with an upwardly extending limiting ring 11, and the center of the placement groove 28 is provided with a limiting post 29 for inserting the limiting ring 11. The outer wall of the limiting post 29 contacts the inner wall of the limiting ring 11. When subjected to external force and vibration, it can limit the relative displacement between the filter assembly 2 and the outer shell 1, prevent the filter assembly 2 from shifting or shaking, thereby ensuring the stability of the filter assembly 2 in use.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. An air filter for an automobile engine, comprising a housing (1), characterized in that, A filter assembly (2) is provided inside the outer shell (1), and a central tube (3) is provided at the top of the outer shell (1); The filter assembly (2) includes an upper end cover (21) and a lower end cover (22) spaced apart. The upper end cover (21) has a through hole (23) through which the central tube (3) passes. A support net (24) is provided between the upper end cover (21) and the lower end cover (22). A first filter paper (25) is provided on the inner side of the support net (24). The first filter paper (25) is folded laterally. A second filter paper (26) is provided on the outer side of the support net (24). The second filter paper (26) is folded longitudinally. The two ends of the support net (24), the first filter paper (25), and the second filter paper (26) are fixedly connected to the upper end cover (21) and the lower end cover (22), respectively.

2. The automotive engine air filter according to claim 1, characterized in that, The bottom of the upper cover (21) is provided with several pillars (27), which are arranged in a circular array and distributed on the inner side of the first filter paper (25). The outer walls of the several pillars (27) are all in contact with the first filter paper (25).

3. The automotive engine air filter according to claim 1, characterized in that, The bottom of the lower end cover (22) is provided with a placement groove (28), and a pre-tension spring (4) is fixedly connected in the placement groove (28). The other end of the pre-tension spring (4) abuts against the inner wall of the outer shell (1).

4. The automotive engine air filter according to claim 1, characterized in that, The central tube (3) extends below the through hole (23), and the inner wall of the through hole (23) is provided with an annular groove (211). A sealing ring (212) is provided on the annular groove (211), and the inner side of the sealing ring (212) abuts against the outer wall of the central tube (3).

5. An automotive engine air filter according to claim 3, characterized in that, The bottom of the outer shell (1) is provided with an upwardly extending limiting ring (11), and the center of the placement groove (28) is provided with a limiting post (29) for inserting the limiting ring (11), and the outer wall of the limiting post (29) is in contact with the inner wall of the limiting ring (11).

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