Air filter

Abstract

The utility model provides an air filter which comprises a barrel-shaped filter element, a sealing cover plate and a mounting seat, the sealing cover plate and the mounting seat are respectively arranged at two axial ends of the filter element, an air outlet is arranged on the sealing cover plate, an air inlet is arranged on the mounting seat, clamping grooves are arranged on the sealing cover plate and the mounting seat, the shape of each clamping groove is matched with the shape of the section of the filter element, and the sealing cover plate is provided with an air inlet. The sealing cover plate and the mounting seat are clamped at the two ends of the filter element through the corresponding clamping grooves respectively, and the two clamping grooves abut against the two axial ends of the filter element respectively, so that the two ends of the filter element are sealed. According to the air filter, the problem that part of air needing to be purified is directly exhausted outwards from the air outlet through the gap can be solved, and therefore the purification effect of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to an air filter. Background Art

[0002] For the air filter of an automobile engine, the condition of the air filter is related to the service life of the engine. If a too dirty air filter is used during the driving of the automobile, it will cause insufficient intake of air by the engine, incomplete combustion of fuel, resulting in unstable operation of the engine, power decline and increased fuel consumption.

[0003] At present, most air filters are provided with a filter element between the air inlet and the air outlet, so that the air to be purified can enter the filter from the air inlet, pass through the filter element for filtration, and then be discharged to the outside from the air outlet to complete the purification of the air.

[0004] However, in the prior art, there are certain gaps between the filter element and the installation groove, and between the filter element and the cover plate, resulting in part of the air to be purified passing through the gaps and being directly discharged to the outside from the air outlet, thus reducing the purification effect of the air filter. Summary of the Utility Model

[0005] In view of this, the utility model aims to provide an air filter to improve the purification effect of the device.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] An air filter includes a cylindrical filter element, a sealing cover plate and a mounting seat respectively arranged at both axial ends of the filter element, and an air outlet is arranged on the sealing cover plate, and an air inlet is arranged on the mounting seat;

[0008] Both the sealing cover plate and the mounting seat are provided with clamping grooves, the shapes of the clamping grooves match the cross-sectional shape of the filter element, and the sealing cover plate and the mounting seat are respectively clamped at both ends of the filter element through the corresponding clamping grooves; the two clamping grooves respectively abut against both axial ends of the filter element to form a seal for both ends of the filter element.

[0009] Further, a filter element support is arranged between the sealing cover plate and the mounting seat, and the filter element is sleeved on the filter element support.

[0010] Further, the filter element support includes a main frame extending along the axial direction of the filter element, and an annular bottom frame arranged at the bottom of the main frame, and the annular bottom frame is used for supporting the filter element.

[0011] Further, in the axial direction of the filter element, the cross-section of the main frame gradually increases from top to bottom, and a plurality of air inlet holes are arranged on the main frame.

[0012] Furthermore, the main frame includes half-cylinder parts arranged relatively along a first preset direction, and connecting parts arranged relatively along a second preset direction. The recesses of each half-cylinder part are arranged relatively, and one of the half-cylinder parts, one of the connecting parts, another half-cylinder part, and another connecting part are connected in sequence to form a ring; a reinforcing plate extending along its own axial direction is provided between the two connecting parts.

[0013] Furthermore, the mounting seat is provided with a clamping protrusion extending along the axial direction of the filter element, the clamping protrusion is used to clamp the top of the main frame, and the shape of the clamping protrusion matches the top of the main frame.

[0014] Furthermore, the filter element is provided with a filter screen extending along its own axial direction, and the filter screen is in contact with the outer peripheral wall of the filter element;

[0015] The top of the main frame, one end of the filter element close to the mounting seat, and one end of the filter screen close to the mounting seat are all connected to the slot on the mounting seat by bonding.

[0016] Furthermore, a connecting protrusion extending along its own circumference is provided on the side of the annular base frame away from the main frame, and a plurality of connecting holes arranged at intervals along the circumference of the annular base frame are provided on the connecting protrusion, and each of the connecting holes is used to fix the sealing cover plate.

[0017] Furthermore, in the first preset direction, a first clip is provided on one side of the mounting seat, and in the second preset direction, a plurality of second clips are provided on both sides of the mounting seat at intervals along the first preset direction, and the first clip and each second clip are used to limit the air filter.

[0018] Furthermore, the outer edge of the sealing cover plate is provided with a sealing protrusion protruding outward.

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

[0020] The air filter described in the utility model, through the arrangement of the sealing cover plate and the card slots on the mounting seat, makes the two card connectors be arranged at the two axial ends of the filter element to form a seal, so that the air to be purified can only enter the filter element through the air inlet, and after passing through the filter element, be discharged from the air outlet, thereby completing the purification of the air and thereby improving the purification effect of the device.

[0021] Secondly, through the setting of the filter element support, the filter element can be provided with installation support, thus ensuring the stability of the filter element. The filter element support is composed of a main frame and an annular bottom frame, which can support the inner peripheral wall of the filter element by using the main frame and support the bottom of the filter element by using the annular bottom frame. At the same time, the annular bottom frame can also axially position the filter element, and has a simple structure, which is convenient for design and implementation. The setting that the cross-section of the main frame gradually increases can make the filter element have an inclined outer surface, which is convenient for air to flow radially through the filter element while flowing axially along the filter element, thus facilitating the improvement of the filtering effect.

[0022] Furthermore, setting the main frame as annular can make the installation of the filter element more convenient without additional adjustment, thus facilitating the improvement of production efficiency. At the same time, the setting of the reinforcing plate can strengthen the structural strength of the main frame and prevent deformation under the extrusion of air. By setting the clamping protrusion, the top of the main frame can be clamped and fixed, ensuring the connection strength between the main frame and the mounting seat. At the same time, during installation, the rapid positioning of the main frame can be realized, improving production efficiency.

[0023] Moreover, through the setting of the filter screen, larger dust particles can be filtered out to prevent damage to the filter element and affect the purification effect. At the same time, the top of the main frame, the end of the filter element close to the mounting seat, and the end of the filter screen close to the mounting seat are all connected to the card slot on the mounting seat by bonding, which is convenient for operation and can further achieve the sealing effect. By setting the connecting protrusion on the annular bottom frame, the sealing cover plate can be supported, facilitating the installation of the sealing cover plate. At the same time, by setting the connecting hole, the connection strength between the sealing cover plate and the annular bottom frame can be strengthened. Through the setting of the first buckle and the second buckle, the positioning of the air filter during installation can be ensured to be stable and avoid shaking. By setting the sealing protrusion, the gap between the air filter and its installation position can be sealed to prevent some air from being discharged through the gap without passing through the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0025] Figure 1 is the overall structural schematic diagram of the air filter according to the embodiment of the present utility model;

[0026] Figure 2 is Figure 1 the exploded schematic diagram of the structure shown;

[0027] Figure 3 is the structural schematic diagram of the sealing cover plate according to the embodiment of the present utility model;

[0028] Figure 4 Schematic structural diagram of the mounting base described in the embodiment of the present utility model;

[0029] Figure 5 Schematic structural diagram of the filter element bracket described in the embodiment of the present utility model.

[0030] Explanation of reference numerals:

[0031] 1. Filter element; 11. Filter screen;

[0032] 2. Sealing cover plate; 21. Air outlet; 22. Sealing protrusion;

[0033] 3. Mounting base; 31. Air inlet; 311. Clamping protrusion; 32. First buckle; 33. Second buckle;

[0034] 4. Card slot;

[0035] 5. Filter element bracket; 51. Main frame; 511. Air intake hole; 512. Through hole; 513. Half-cylindrical part; 514. Connection part; 5141. Reinforcing plate; 52. Annular bottom frame; 521. Connection protrusion; 5211. Connection hole. Specific implementation manner

[0036] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0037] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] Taking the air filter described in the present utility model as an example, the orientation terms such as "upper, lower, left, right, front, back" used in the embodiment are based on Figure 1 the up-down direction (also known as the height direction, or the overall Z direction), the left-right direction (also known as the length direction, or the overall Y direction), and the front-back direction (also known as the width direction, or the overall X direction) in the state shown.

[0039] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "linkage", and "connector" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood in combination with specific circumstances.

[0040] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] Embodiment 1

[0042] This embodiment relates to an air filter, which can solve the problem that part of the air to be purified directly discharges outward from the air outlet through the gap, thereby facilitating the improvement of the purification effect of the device.

[0043] In terms of the overall structure, as Figures 1 to 5 shown in the figure, the air filter of this embodiment includes a cylindrical filter element 1, a sealing cover plate 2 and a mounting seat 3 respectively arranged at both axial ends of the filter element 1, and an air outlet 21 is provided on the sealing cover plate 2, and an air inlet 31 is provided on the mounting seat 3.

[0044] Among them, clamping grooves 4 are provided on both the sealing cover plate 2 and the mounting seat 3, and the shapes of the clamping grooves 4 match the cross-sectional shape of the filter element 1, and the sealing cover plate 2 and the mounting seat 3 are respectively clamped at both ends of the filter element 1 through the corresponding clamping grooves 4, and the two clamping grooves 4 respectively abut against both axial ends of the filter element 1 to form a seal for both ends of the filter element 1.

[0045] At this time, with the above settings, through the arrangement of the clamping grooves 4 on the sealing cover plate 2 and the mounting seat 3, the two are clamped at both axial ends of the filter element 1 to form a seal, so that the air to be purified can only enter the filter element 1 through the air inlet 31, pass through the filter element 1, and then be discharged from the air outlet 21 to complete the purification of the air, thereby improving the purification effect of the device.

[0046] During specific implementation, the air inlet is arranged on the outer peripheral wall of the mounting seat 3 and extends circumferentially along the mounting seat 3. Of course, the air inlet can also be set to be multiple, and the air inlets are arranged at intervals circumferentially along the mounting seat 3. The latter is adopted in this application.

[0047] At the same time, the sealing cover plate 2 and the mounting seat 3 are respectively abutted against both ends of the filter element 1 to form a seal, so that the air can only enter through the air inlet and then flow through the filter element 1 from the periphery to the middle (i.e., along the radial direction of the filter element 1), and after passing through the filter element 1, it is discharged from the air outlet 21.

[0048] Based on the above overall introduction, in this embodiment, as a preferred implementation form, as Figure 1 and Figure 2 shown, a filter element bracket 5 is provided between the sealing cover plate 2 and the mounting base 3, and the filter element 1 is sleeved on the filter element bracket 5. Here, through the setting of the filter element bracket 5, installation support can be provided for the filter element 1, thereby ensuring the stability of the filter element 1.

[0049] In the specific structure, the filter element 1 is formed by alternately peak-folding and valley-folding the filter paper (that is, alternately folding the filter paper in the positive direction and the reverse direction), and the creases of the filter paper generally extend along the axial direction of the filter element 1. This folding method belongs to the prior art, and this application will not elaborate on it any further.

[0050] Of course, the manufacturing material of the filter element 1 is not limited to filter paper, and other materials with filtering ability can also be used, such as non-woven fabric, etc. In addition, when manufacturing the filter element bracket 5 in this embodiment, a plastic material well-known to those skilled in the art can be used. Thus, it is beneficial to achieve weight reduction and cost reduction.

[0051] During specific implementation, the folded filter element 1 is sleeved on the filter element bracket 5, or the filter element 1 can also be folded around the filter element bracket 5, and after folding is completed, the head and tail of the filter element 1 are connected.

[0052] Specifically, in this embodiment, as a preferred implementation form, as Figure 5 shown, the filter element bracket 5 includes a main frame 51 extending along the axial direction of the filter element 1, and an annular bottom frame 52 provided at the bottom of the main frame 51. The annular bottom frame 52 is used to support the filter element 1.

[0053] It can be understood that the filter element bracket 5 is composed of the main frame 51 and the annular bottom frame 52, which can support the inner peripheral wall of the filter element 1 by using the main frame 51, support the bottom of the filter element 1 by using the annular bottom frame 52, and at the same time, the annular bottom frame 52 can also axially position the filter element 1, and the structure is simple and convenient for design and implementation.

[0054] Meanwhile, in this embodiment, as a preferred implementation form, still as Figure 5 shown, in the axial direction of the filter element 1, the cross-section of the main frame 51 gradually increases from top to bottom, and a plurality of air inlets 511 are provided on the main frame 51.

[0055] The advantage of such a setting is that the cross-section of the main frame 51 gradually increases, which can make the filter element 1 have an inclined outer surface, facilitating air to flow radially through the filter element 1 while flowing axially along the filter element 1, thereby being beneficial to improving the filtering effect.

[0056] In the specific structure, a plurality of air inlet hole groups are arranged on the main frame 51 at intervals along the axial direction of the filter element 1. Each air inlet hole group is composed of a plurality of air inlet holes 511 arranged at intervals along the circumferential direction of the filter element 1. The number of air inlet hole groups can be set to nine, and the number of air inlet holes 511 in each air inlet hole group can be set to sixteen. Of course, the number of air inlet hole groups and the number of air inlet holes 511 in each air inlet hole group can also be designed and adjusted accordingly according to the actual filtration requirements.

[0057] In addition, the air inlet holes 511 in this embodiment can be set to be rectangular. Of course, in addition to being set to rectangular, they can also be set to other common shapes, such as triangular, circular, etc.

[0058] During specific implementation, an annular through hole 512 is provided at the bottom of the main frame 51, and the air passing through the filter element 1 can enter the interior of the main frame 51 through each air inlet hole 511 and be discharged through the through hole 512 and the air outlet 21.

[0059] And, in this embodiment, as a preferred implementation form, continue to refer to Figure 5 As shown in, the main frame 51 includes semi-cylindrical portions 513 arranged opposite to each other in a first preset direction, and connecting portions 514 arranged opposite to each other in a second preset direction. The concave portions of each semi-cylindrical portion 513 are arranged opposite to each other, and one semi-cylindrical portion 513, one connecting portion 514, the other semi-cylindrical portion 513, and the other connecting portion 514 are connected in sequence to form a ring. Thus, setting the main frame 51 as a ring can make it more convenient to install the filter element 1 without additional adjustment, thereby facilitating the improvement of production efficiency.

[0060] It is worth mentioning that the first preset direction in this embodiment is Figure 1 the front-back direction shown in, and the second preset direction is Figure 1 the left-right direction shown in, and the axial direction of the filter element 1 is Figure 1 the up-down direction shown in.

[0061] At the same time, a reinforcing plate 5141 extending along its own axial direction is provided between the two connecting portions 514. Here, through the setting of the reinforcing plate 5141, the structural strength of the main frame 51 can be enhanced, and deformation can be avoided under the extrusion of air. And, in other ways, the reinforcing plate 5141 can also be provided between the two semi-cylindrical portions 513.

[0062] It should be noted that the reinforcing plate 5141 in this embodiment can be provided between the two connecting portions 514 by means of integral injection molding. Of course, the reinforcing plate 5141 can also be connected by other common connection methods, such as bonding, etc.

[0063] In addition, as a preferred implementation form, as shown in Figure 4As shown in , the mounting seat 3 of this embodiment is provided with a clamping protrusion 311 extending along the axial direction of the filter element 1. The clamping protrusion 311 is used to clamp the top of the main frame 51, and the shape of the clamping protrusion 311 matches the top of the main frame 51.

[0064] Thus, by providing the engaging protrusions 311, the top of the main frame 51 can be engaged and fixed, thereby ensuring the connection strength between the main frame 51 and the mounting base 3. At the same time, during installation, the main frame 51 can be quickly positioned, thereby improving production efficiency. In the specific structure, the main frame 51 is engaged with the engaging protrusions 311. At this time, the inner peripheral wall of the main frame 51 is arranged in abutment with the outer peripheral wall of the engaging protrusions 311.

[0065] At the same time, in this embodiment, as a preferred implementation form, Figure 1 and Figure 2 As shown in , the filter element 1 is provided with a filter screen 11 extending along its own axial direction, and the filter screen 11 is attached to the outer peripheral wall of the filter element 1. Here, by setting the filter screen 11, larger dust particles can be filtered out to prevent damage to the filter element 1 and affect the purification effect of the device.

[0066] Furthermore, the top of the main frame 51, the end of the filter element 1 close to the mounting seat 3, and the end of the filter screen 11 close to the mounting seat 3 are all bonded to the slot 4 on the mounting seat 3. This arrangement facilitates operation and further achieves a sealing effect.

[0067] It should be noted that a sealant well known to those skilled in the art can be used between the aforementioned components and the slots 4 on the mounting base 3. In a specific implementation, the filter element 1 is sleeved onto the filter element holder 5, and the filter screen 11 is sleeved onto the filter element 1. Sealant is applied to the slots 4 of the mounting base 3, and the filter element holder 5, filter element 1, and filter screen 11 are bonded to the slots 4 to enhance the sealing effect.

[0068] In addition, in this embodiment, as a preferred implementation form, Figure 5 As shown, a connecting protrusion 521 extending along its own circumference is provided on the side of the annular base frame 52 facing away from the main frame 51 , and a plurality of connecting holes 5211 arranged at intervals along the circumference of the annular base frame 52 are provided on the connecting protrusion 521 , each connecting hole 5211 is used to fix the sealing cover plate 2 .

[0069] Here, by providing the connection protrusion 521 on the annular base frame 52, the sealing cover plate 2 can be supported, which facilitates the installation of the sealing cover plate 2. At the same time, by providing the connection hole 5211, the connection strength between the sealing cover plate 2 and the annular base frame 52 can be strengthened.

[0070] During specific implementation, after fixing the filter element bracket 5, the filter element 1 and the filter net 11 in the card slot 4 on the mounting seat 3, the sealing cover plate 2 is attached between the filter element bracket 5 and the filter net 11 through an injection molding process. Moreover, the sealing cover plate 2 can be made of polyurethane in the prior art, and its good sealing performance can be utilized to prevent air leakage. In addition, in other embodiments, the sealing cover plate 2 and the filter element bracket 5 and the filter net 11 can also be detachably connected.

[0071] Furthermore, through the twenty connecting holes 5211 opened on the connecting protrusion 521, when the sealing cover plate 2 is injection molded, the material can pass through each connecting hole 5211 and fill each connecting hole 5211, thereby improving the connection strength between the sealing cover plate 2 and the connecting protrusion 521.

[0072] Moreover, considering the stability requirements of the device, in this embodiment, as a preferred implementation form, as Figure 4 shown in the figure, on one side of the mounting seat 3 in the first preset direction, there is a first buckle 32, and on both sides of the mounting seat 3 in the second preset direction, there are a plurality of second buckles 33 arranged at intervals along the first preset direction. The first buckle 32 and each second buckle 33 are both used to limit the air filter.

[0073] Here, through the settings of the first buckle 32 and the second buckles 33, the positioning of the air filter during installation can be ensured to be stable, avoiding shaking. In the specific structure, the first buckle 32 and each second buckle 33 are both arranged on the outer peripheral wall of the mounting seat 3.

[0074] In addition, in this embodiment, as a preferred implementation form, as Figure 3 shown in the figure, the outer edge of the sealing cover plate 2 is provided with a sealing protrusion 22 protruding outward. Thus, through the setting of the sealing protrusion 22, the gap between the air filter and its installation position can be sealed, preventing some air from being discharged through the gap without passing through the filter element 1.

[0075] When the air filter of this embodiment is in use, it can be tightened against both ends of the filter element 1 through the mounting seat 3 and the sealing cover plate 2, and sealant is applied in the card slot 4 of the mounting seat 3. Thereby, it can be ensured that the air flows axially along the filter element 1, radially passes through the filter element 1 and the air inlet holes 511, and is discharged through the air outlet 21, thereby effectively purifying the air and facilitating the improvement of the purification effect of the device.

[0076] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air filter, characterized in that: It includes a cylindrical filter element (1), a sealing cover plate (2) and a mounting seat (3) respectively arranged at both axial ends of the filter element (1), and an air outlet (21) is provided on the sealing cover plate (2), and an air inlet (31) is provided on the mounting seat (3); Clamping grooves (4) are provided on both the sealing cover plate (2) and the mounting seat (3), the shapes of the clamping grooves (4) are all matched with the cross-sectional shape of the filter element (1), and the sealing cover plate (2) and the mounting seat (3) are respectively clamped at both ends of the filter element (1) through the corresponding clamping grooves (4); The two clamping grooves (4) respectively abut against both axial ends of the filter element (1) to form a seal at both ends of the filter element (1); A filter element support (5) is provided between the sealing cover plate (2) and the mounting seat (3), and the filter element is sleeved on the filter element support (5); The filter element support (5) includes a main frame (51) extending along the axial direction of the filter element (1), and an annular bottom frame (52) provided at the bottom of the main frame (51), and the annular bottom frame (52) is used to support the filter element (1); In the axial direction of the filter element (1), the cross-section of the main frame (51) gradually increases from top to bottom, and a plurality of air inlet holes (511) are provided on the main frame (51).

2. The air filter according to claim 1, characterized in that: The main frame (51) includes semi-cylindrical parts (513) arranged opposite to each other in a first preset direction, and connecting parts (514) arranged opposite to each other in a second preset direction. The concave parts of the semi-cylindrical parts (513) are arranged opposite to each other, and one semi-cylindrical part (513), one connecting part (514), the other semi-cylindrical part (513), and the other connecting part (514) are connected in sequence to form a ring; A reinforcing plate (5141) extending along its own axial direction is provided between the two connecting parts (514).

3. The air filter according to claim 1, characterized in that: A clamping protrusion (311) extending along the axial direction of the filter element (1) is provided on the mounting seat (3), and the clamping protrusion (311) is used to clamp the top of the main frame (51), and the shape of the clamping protrusion (311) is matched with the top of the main frame (51).

4. The air filter according to claim 1, characterized in that: A filter net (11) extending along the circumferential direction of the filter element (1) is sleeved on the filter element (1), and the filter net (11) fits against the outer peripheral wall of the filter element (1); The top of the main frame (51), the end of the filter element (l) close to the mounting seat (3), and the end of the filter net (11) close to the mounting seat (3) are all connected by bonding to the clamping groove (4) on the mounting seat (3).

5. The air filter according to claim 1, characterized in that: On one side of the annular chassis (52) facing away from the main frame (51), there is a connecting protrusion (521) arranged along its circumferential direction. On the connecting protrusion (521), there are a plurality of connecting holes (5211) arranged at circumferential intervals along the annular chassis (52). Each of the connecting holes (5211) is used to fix the sealing cover plate (2).

6. The air filter according to claim 2, characterized in that: On one side of the mounting seat (3) in the first preset direction, there is a first buckle (32), and on both sides of the mounting seat (3) in the second preset direction, there are a plurality of second buckles (33) arranged at intervals along the first preset direction. The first buckle (32) and each of the second buckles (33) are both used to limit the air filter.

7. The air filter according to claim 1, characterized in that: The outer edge of the sealing cover plate (2) is provided with a sealing protrusion (22) protruding outwards in a ring shape.

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