A spin-type air filter device

Abstract

The present invention relates to a spin-on air filter device, including an upper end cover assembly, a swirl plate, a main filter element assembly, a safety filter element assembly, and a lower end cover assembly; the upper end cover assembly and the lower end cover assembly are snap-connected to form a shell, and the lower end cover assembly is provided with an air inlet and an air outlet; the main filter element assembly is installed inside the shell, and its upper end cover is installed in a rotating ring groove inside the upper end cover assembly, and its lower end cover is installed in a rotating ring groove inside the lower end cover assembly; the filter element upper end cover of the safety filter element assembly is installed in the rotating ring groove on the upper part of the main filter element assembly, and the lower end is fixedly connected to the air outlet; the swirl plate is detachably mounted on the outside of the main filter element assembly. Compared with the prior art, the present invention adds a swirl plate, so that the main filter element assembly can rotate under the drive of the air at the air inlet, and achieves the effect of dust removal and ash removal through its own centrifugal force, and has the advantages of long service life and easy disassembly and assembly.

Description

Technical Field

[0001] The invention relates to a cleaning device for air required by an internal combustion engine, in particular to a spin-type air filter device. Background Art

[0002] At present, many air filter assemblies have the problem of repeated disassembly and assembly within the maintenance mileage, mainly to remove the dust adhering to the surface of the filter element, resulting in the need to stop the vehicle at any time for manual cleaning during operation;

[0003] Another problem is that if the filter assembly does not contain a fixed swirl vane or an air inlet baffle, a part of the filter element of the filter assembly will be damaged by air flow impact for a long time, which will seriously shorten the life of the entire filter element.

[0004] Today's air filter assemblies all use a filter element to fix the filter, and the design of multiple dust removal during the manual maintenance cycle makes the entire maintenance process difficult. The installation location of the air filter assembly on the vehicle is also restricted. If the location is too high or too hidden, maintenance or replacement of end-of-life filter elements can only be carried out at 4S stores.

[0005] The spin-on air filter assembly has strong self-cleaning properties during operation. It uses the centrifugal force generated by rotation to constantly clean the dust adhering to the surface of the filter element. It only requires a one-time maintenance and replacement at a 4S shop when the filter element reaches the end of its life. The filter element is impacted by the air intake in the circumferential direction, which increases the service life of the filter element and saves the cost of use. The installation position can be more arbitrary, and there is no need to consider that the filter assembly needs to be installed in any suitable position. Summary of the invention

[0006] The purpose of the present invention is to provide a spin-on air filter device in order to overcome the defects of the prior art.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A spin-on air filter device comprises a shell and a filter component, the shell is provided with an air inlet and an air outlet; the filter component is installed inside the shell to form a filter cavity with the shell, the air inlet is communicated with the filter cavity, the upper end of the filter component is matched with the upper part of the shell, and the bottom of the filter component is matched with the air outlet. It is characterized in that the spin-on air filter device also includes a swirl plate, which can be detachably mounted on the outside of the filter component for repeated use; when working, the filter element component rotates relative to the shell.

[0009] The swirl sheet comprises a body and a spiral blade structure. The body is a frame structure, and its shape is the same as that of the filter component. The spiral blade structure is arranged along the circumference of the body and is fixedly connected to the outside of the frame of the body.

[0010] The spiral blade structure has a rotation angle of 10-20°, and the baffle and air intake have an angle of 95-115°. Different angles may be adjusted in different products according to different requirements.

[0011] Preferably, the spiral blade structure has a rotation angle of 15°, and the included angle between the baffle and the air intake is 105°.

[0012] When the engine is working, the airflow enters and pushes the spiral blades and baffles, thereby driving the entire filter element to rotate inside. On the one hand, it is difficult for the rotating filter element to adhere to impurity particles in the air. On the other hand, the centrifugal force generated by the rotation drives the filter element to throw the particles off the surface to achieve a cleaning effect. The baffle and spiral blades (i.e., swirl blades) drive the airflow to rotate inside the shell through the guiding effect. The spiral airflow will throw the particles mixed in the air onto the inner wall of the shell and accumulate and settle to the bottom. Due to the inconsistent structural requirements of different products, the centrifugal force F = ps = w can basically be used as a reference. 2 .rm is greater than or equal to about 50N, which can throw away the particles to achieve the effect of secondary cleaning, where F is centrifugal force, w is angular velocity, r is filter element radius, m is filter element deadweight, p is pressure, and s is unit area.

[0013] The swirl sheet is integrally injection molded.

[0014] The spiral blade structure extends from one end of the baffle to the other end.

[0015] The shell comprises an upper end cover assembly and a lower end cover assembly, which are matched and connected to form an internal cavity; the upper end of the filter component is connected to the upper end cover assembly, and the lower end of the filter component is connected to the lower end cover assembly.

[0016] The filtering component includes a main filter element assembly and a safety filter element assembly, the main filter element assembly includes a first upper end cover, a first filter paper, a first center tube, and a first lower end cover, and the safety filter element assembly includes a second upper end cover, a second filter paper, a second center tube, and an O-ring; the first upper end cover of the main filter element assembly is matched with the rotating ring groove inside the upper end cover assembly, and the first lower end cover of the main filter element assembly is matched with the rotating ring groove inside the lower end cover assembly; the second upper end cover of the safety filter element assembly is matched with the rotating ring groove inside the main filter element assembly, and the lower part of the second center tube of the safety filter element assembly is fixedly connected to the air outlet, and the main filter element assembly rotates relative to the shell during operation; preferably, the lower part of the second center tube of the safety filter element assembly is fixedly connected to the air outlet by threads and sealed by an O-ring.

[0017] The upper end cover assembly includes a cover and a check valve; the lower end cover assembly includes a bushing, a buckle, a second lower end cover, an air inlet and an air outlet; the cover of the upper end cover assembly is buckled to the second lower end cover of the lower end cover assembly.

[0018] The air filter assembly of the present invention sucks in air through the air inlet of the lower end cover assembly, and the air acts on the swirl plate to drive the main filter element assembly to rotate, and the safety filter element assembly is fixed at the air outlet of the lower end cover assembly with threads; the present invention adds a swirl plate, so that the main filter element assembly can rotate under the drive of the air at the air inlet, and achieves the effect of dust removal and ash removal through its own centrifugal force; the present invention utilizes the main filter element assembly and the safety filter element assembly to purify the air entering the internal combustion engine, removes the impurity particles contained in the air, so that the exhaust particulate matter of the internal combustion engine can meet the requirements of the National VI emission regulations; the main filter element assembly is a maintenance part and is replaced after a specific mileage, and the safety filter element assembly does not need to be replaced during the life of the vehicle.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. Long service life: When the internal combustion engine is working, the inhaled air flow acts on the swirl plate, pushing the main filter element assembly to rotate by itself. The centrifugal force generated by the rotation will initially filter the impurity particles that enter with the air and deposit them at the bottom of the filter assembly shell. There is no need to follow the existing air filter assembly maintenance method, disassemble and assemble many times during the service life, and manually remove dust. It is more likely that non-professionals will damage the main filter element assembly during the manual dust removal process, which greatly reduces the service life. Compared with the conventional air filter assembly, the rotating main filter element assembly avoids a single part from being subjected to the air impact from the air inlet, so that the local life ends before the overall life. The self-spinning main filter element assembly can withstand impacts from all directions and extend the service life.

[0021] 2. Reduce the limitations of vehicle installation: Since the main filter assembly needs manual maintenance during its life cycle, the vehicle designer should consider the installation position of the air filter assembly to facilitate disassembly and assembly by personnel. For the spin-on air filter assembly, the entire main filter assembly does not need to be disassembled and maintained many times during its life cycle, and only needs one-time maintenance at the end of its life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the decomposition of the present invention;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the swirl sheet in the present invention;

[0024] Figure 3 It is a schematic diagram of the top view of the swirl sheet in the present invention;

[0025] Figure 4 This is a schematic diagram of the main structure of the swirl blade in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the upper end cover assembly in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the main filter element assembly in the present invention;

[0028] Figure 7 It is a structural schematic diagram of the safety filter element assembly in the present invention;

[0029] Figure 8 It is a structural schematic diagram of the lower end cover assembly in the present invention.

[0030] In the figure, 1 is an upper end cover assembly, 2 is a swirl plate, 3 is a main filter element assembly, 4 is a safety filter element assembly, 5 is a lower end cover assembly, 11 is a cover, 12 is a check valve, 21 is a swirl plate structure, 22 is a baffle, 31 is a first upper end cover, 32 is a first filter paper, 33 is a first center tube, 34 is a first lower end cover, 41 is a second upper end cover, 42 is a second filter paper, 43 is a second center tube, 44 is an O-ring, 51 is a bushing, 52 is a buckle, 53 is a second lower end cover, 54 is an air inlet, and 55 is an air outlet. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0032] Example 1

[0033] A spin-type air filter device, the structure of which is as follows Figure 1 As shown, it includes an upper end cover assembly 1, a swirl plate 2, a main filter element assembly 3, a safety filter element assembly 4, and a lower end cover assembly 5.

[0034] Figure 2 , Figure 3 and Figure 4 All of them are structural schematic diagrams of swirl plates. The swirl plate 2 is integrally injection molded and can be detachably mounted on the outside of the main filter element assembly 3 for easy reuse. The swirl plate 2 includes a spiral blade structure 21 and a baffle plate 22, wherein the baffle plate 22 is a cylindrical distributed frame structure; the spiral blade structure 21 is arranged along the circumference of the baffle plate and is fixedly connected to the outside of the frame of the baffle plate 22; the spiral blade structure has a spiral angle of 15°; the baffle plate and the air intake have an angle of 105°; the spiral blade structure 21 extends from one end of the baffle plate 22 to the other end.

[0035] Figure 5 The upper end cover assembly 1 includes a cover 11 and a check valve 12. Figure 8 It is a structural schematic diagram of the lower end cover assembly, which includes a bushing 51, a buckle 52, a second lower end cover 53, an air inlet 54 and an air outlet 55. The upper end cover assembly 1 and the lower end cover assembly 5 are buckled together to form a shell; the filter component is installed inside the shell to form a filter cavity; the second lower end cover 53 of the lower end cover assembly 5 is provided with an air inlet 54, and the air inlet 54 is connected to the filter cavity, and the second lower end cover 53 of the lower end cover assembly 5 is provided with an air outlet 55, and the air outlet 55 is connected to the filter component.

[0036] The main filter element assembly 3 and the safety filter element assembly 4 form a filter component. Figure 6 This is a schematic diagram of the structure of the main filter assembly. Figure 7 It is a structural schematic diagram of the safety filter element assembly, wherein the main filter element assembly 3 and the safety filter element assembly 4 are both cylindrical structures; the main filter element assembly 3 includes a first upper end cover 31, a first filter paper 31, a first center tube 33, and a first lower end cover 34; the safety filter element assembly 4 includes a second upper end cover 41, a second filter paper 42, a second center tube 43, and an O-ring 44, and the safety filter element assembly 4 is mounted inside the main filter element assembly 3.

[0037] The first upper end cover 31 of the main filter element assembly 3 is installed in the rotating ring groove inside the cover 11, the lower end cover 34 of the main filter element assembly is installed in the rotating ring groove inside the second lower end cover 53, the second upper end cover 41 of the safety filter element assembly 4 is installed in the rotating ring groove of the main filter element assembly 3, and the lower part of the second center tube 43 of the safety filter element assembly 4 is fixedly connected to the air outlet 55 of the lower end cover assembly 5 by threads and sealed by an O-ring 44.

[0038] When the engine is working, the airflow enters and pushes the spiral blades and baffles, thereby driving the entire filter element to rotate inside. On the one hand, it is difficult for the rotating filter element to adhere to impurity particles in the air, and on the other hand, the centrifugal force generated by the rotation will throw the particles on the filter element off the surface to achieve a cleaning effect. The baffles and spiral blades (i.e., swirl blades) drive the airflow to rotate inside the shell through the guiding effect. The spiral airflow will throw the particles mixed in the air onto the inner wall of the shell and accumulate and settle to the bottom.

[0039] During operation, the air filter assembly inhales air through the air inlet 54 of the lower end cover assembly 5, the air acts on the swirl plate 2, pushing the main filter element assembly 3 to rotate, and the safety filter element assembly 4 is fixed to the air outlet 55 of the lower end cover assembly 5 with threads. The main filter element assembly 3 rotates under the drive of the air from the air inlet, and achieves the effect of dust removal and ash removal through its own centrifugal force; at the same time, the filter component of the present invention can filter and purify the air entering the internal combustion engine, and remove foreign particles in the air; the rotating main filter element assembly in the present invention avoids a single part of the filter element assembly from being subjected to the air impact from the air inlet, prevents the local life from terminating before the overall life, and can extend the service life.

[0040] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

[0041] Example 2

[0042] A spin-type air filter device, the structure of which is as follows Figure 1 As shown, it includes an upper end cover assembly 1, a swirl plate 2, a main filter element assembly 3, a safety filter element assembly 4, and a lower end cover assembly 5.

[0043] The structures of the upper end cover assembly 1, the main filter element assembly 3, the safety filter element assembly 4, and the lower end cover assembly 5 of the spin-on air filter device are the same as those in Example 1, except that the structural parameters of the swirl plate in Example 2 are different from the structural parameters of the swirl plate in Example 1.

[0044] In Example 2, the swirl plate is integrally injection molded and can be detachably mounted on the outside of the main filter assembly for easy reuse. The swirl plate includes a spiral blade structure and a baffle plate, wherein the baffle plate is a cylindrical distributed frame structure; the spiral blade structure is arranged along the circumference of the baffle plate and is fixedly connected to the outside of the frame of the baffle plate; the spiral blade structure has a spiral angle of 10°; the baffle plate has an angle of 95° with the air intake; and the spiral blade structure extends from one end of the baffle plate to the other end.

[0045] Example 3

[0046] A spin-type air filter device, the structure of which is as follows Figure 1 As shown, it includes an upper end cover assembly 1, a swirl plate 2, a main filter element assembly 3, a safety filter element assembly 4, and a lower end cover assembly 5.

[0047] The structures of the upper end cover assembly 1, the main filter element assembly 3, the safety filter element assembly 4, and the lower end cover assembly 5 of the spin-on air filter device are the same as those in Example 1, except that the structural parameters of the swirl plate in Example 3 are different from the structural parameters of the swirl plate in Example 1.

[0048] In Example 3, the swirl plate is integrally injection molded and can be detachably mounted on the outside of the main filter assembly for easy reuse. The swirl plate includes a spiral blade structure and a baffle plate, wherein the baffle plate is a cylindrical distributed frame structure; the spiral blade structure is arranged along the circumference of the baffle plate and is fixedly connected to the outside of the frame of the baffle plate; the spiral blade structure has a swirl angle of 20°; the baffle plate has an angle of 115° with the air intake; and the spiral blade structure extends from one end of the baffle plate to the other end.

[0049] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A spin-on air filter device, comprising a housing and a filter element, wherein the housing is provided with an air inlet (54) and an air outlet (55), characterized in that: The housing comprises an upper end cover assembly (1) and a lower end cover assembly (5), which are matched and connected to form an internal cavity; The filter component is installed inside the housing to form a filter cavity with the housing, and the air inlet (54) is connected to the filter cavity; the filter component comprises a main filter element assembly (3) and a safety filter element assembly (4) sleeved inside the main filter element assembly (3); the upper end of the main filter element assembly (3) is mounted in a matching manner with the rotating ring groove inside the upper end cover assembly (1), and the lower end is mounted in a matching manner with the rotating ring groove inside the lower end cover assembly (5); the upper end of the safety filter element assembly (4) is mounted in the rotating ring groove of the main filter element assembly (3), and the lower end is fixedly connected to the air outlet (55); The spin-on air filter device further comprises a swirl plate (2), wherein the swirl plate (2) is detachably mounted on the outside of the filter component, and when air acts on the swirl plate (2), the main filter element assembly (3) is pushed to rotate relative to the housing, thereby removing dust and ash through its own centrifugal force; The swirl plate (2) comprises a baffle plate and a spiral blade structure, wherein the baffle plate is a frame structure; the spiral blade structure is arranged along the circumference of the baffle plate and is fixedly connected to the outside of the frame of the baffle plate; the spiral angle of the spiral blade structure is 10-20°, and the angle between the baffle plate and the air intake is 95-115°.

2. A spin-on air filter device according to claim 1, characterized in that: The spiral blade structure has a rotation angle of 15°, and the baffle and air intake have an angle of 105°.

3. A spin-on air filter device according to claim 1, characterized in that: The swirl sheet (2) is integrally injection molded.

4. A spin-on air filter device according to claim 1, characterized in that: The spiral blade structure extends from one end of the baffle to the other end.

5. A spin-on air filter device according to claim 1, characterized in that: The air inlet (54) is arranged on the side of the lower end cover assembly (5), and the air outlet (55) is arranged on the bottom of the lower end cover assembly (5).

6. A spin-on air filter device according to claim 1, characterized in that: The main filter element assembly (3) comprises a first upper end cover (31), a first filter paper (32), a first central tube (33), and a first lower end cover (34); the safety filter element assembly (4) comprises a second upper end cover (41), a second filter paper (42), a second central tube (43), and an O-ring (44); The first upper end cover (31) of the main filter element assembly (3) is mounted in a matching manner with the rotating annular groove inside the upper end cover assembly (1), and the first lower end cover (34) of the main filter element assembly (3) is mounted in a matching manner with the rotating annular groove inside the lower end cover assembly (5); The second upper end cover (41) of the safety filter element assembly (4) is installed in the rotating ring groove of the main filter element assembly (3), and the lower end of the second center tube (43) of the safety filter element assembly (4) is fixedly connected to the air outlet (55).

7. A spin-on air filter device according to claim 6, characterized in that: The lower portion of the second central tube (43) of the safety filter element assembly (4) is fixedly connected to the air outlet (55) via threads and is sealed via an O-ring (44).

8. A spin-on air filter device according to claim 1, characterized in that: The upper end cover assembly (1) comprises a cover (11) and a check valve (12); the lower end cover assembly (5) comprises a bushing (51), a buckle (52), a second lower end cover (53), an air inlet (54) and an air outlet (55); the upper end cover assembly (1) and the lower end cover assembly (5) are buckled and connected.

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