Air outlet end cover, air filter element and air filter

Abstract

The utility model provides an air outlet end cover, an air filter element and an air filter, and the air outlet end cover comprises a connecting part which is used for being connected with the end part of a first filtering module; the air outlet component is surrounded by the connecting component, the air outlet component is provided with a plurality of air outlet parts and a plurality of extending parts, the air outlet parts are provided with first air outlet holes, the first air outlet holes are used for being communicated with an air outlet flow channel of the air filter element, the extending parts are located between the connecting component and the air outlet parts, the first ends of the extending parts are connected with the air outlet parts, and the second ends of the extending parts are connected with the air outlet parts. The second ends of the extending parts are connected with the connecting parts, a second air outlet hole is defined by every two adjacent extending parts, the air outlet part located between every two adjacent connecting parts and the connecting parts, the second air outlet holes are used for being communicated with an air outlet flow channel of the air filter element, and the cross section of at least part of the extending parts in the multiple extending parts is in an arc shape. Wind resistance can be reduced, and therefore airflow vibration noise can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air filtration, in particular to an air outlet end cover, an air filter element and an air filter. BACKGROUND

[0002] The air filter element realizes air purification through physical filtration and chemical adsorption, and mainly comprises a limiting end cover, a composite filter module, an activated carbon filter module and an air outlet end cover. The composite filter module is vertically clamped between the limiting end cover and the air outlet end cover. The side wall of the composite filter module has an air inlet flow channel, and the outer end of the air inlet flow channel is connected with external air. The inner peripheral wall of the composite filter module forms an air outlet flow channel, and the air outlet flow channel is connected with the inner end of the air inlet flow channel. The activated carbon filter module is arranged in the air outlet flow channel. The air outlet end cover has a plurality of air outlet holes, and the plurality of air outlet holes are connected with the air outlet flow channel to output purified air.

[0003] However, in actual application, due to the structure of the air outlet holes of the air outlet end cover, the air filter element has a large air outlet resistance, thereby causing excessive noise. CONTENT OF THE INVENTION

[0004] The air outlet end cover, the air filter element and the air filter provided by the embodiments of the present application solve the problem of excessive noise in the related art, and the technical solutions are as follows.

[0005] In a first aspect, the embodiments of the present application provide an air outlet end cover, which is arranged on the end of a first filter module of an air filter element, and comprises:

[0006] a connecting part, which is used to connect with the end of the first filter module; and

[0007] an air outlet part, which is surrounded by the connecting part, and is provided with a plurality of air outlet parts and a plurality of extension parts. Each of the plurality of air outlet parts has a first air outlet hole, which is used to communicate with an air outlet flow channel of the air filter element. The extension part is located between the connecting part and the air outlet part. The first end of the extension part is connected with the air outlet part, and the second end of the extension part is connected with the connecting part. The second air outlet hole is surrounded by the air outlet part between the adjacent two connecting parts, the air outlet part and the connecting part. The second air outlet hole is used to communicate with the air outlet flow channel of the air filter element. In the plurality of extension parts, at least part of the extension parts has an arc-shaped cross section, that is, the extension part is inclined relative to the connecting part, and the extension part has an arc shape.

[0008] In an embodiment, the plurality of extension parts are inclined downward toward the direction close to the air outlet part.

[0009] In an embodiment, the first air outlet hole and the second air outlet hole are both polygonal in cross section.

[0010] In an embodiment, the bottom wall of the connecting component is provided with a connecting groove, which is arranged around the air outlet component and used to cooperate with the end of the first filter module.

[0011] In an embodiment, the side wall of the connecting groove is provided with a mounting guide inclined surface, which is arranged outwardly and inclined away from the bottom wall of the connecting groove.

[0012] In a second aspect, the embodiments of the present application provide an air filter element, which comprises the air outlet end cover described above.

[0013] In an embodiment, the air filter element further comprises:

[0014] a limiting end cover, which is arranged apart from the air outlet end cover along the vertical direction of the air filter element;

[0015] a first filter module, which is vertically sandwiched between the air outlet end cover and the limiting end cover, and whose inner periphery forms an air outlet flow channel, which is communicated with the first filter module, the first air outlet hole and the second air outlet hole, and which is used to intercept particulate pollutants in the airflow;

[0016] a second filter module, which is arranged in the air outlet flow channel and communicated with the air outlet flow channel, and which is used to filter volatile organic pollutants, odors, tobacco tar and particulate pollutants in the airflow output by the first filter module.

[0017] In an embodiment, the second filter module comprises:

[0018] a plurality of filter material carrying supports, which are arranged apart from each other along the vertical direction of the air outlet flow channel, and between which adjacent two filter material carrying supports form an airflow flow channel, which is communicated with the first filter module and the air outlet flow channel, and which is used to carry filter material.

[0019] In an embodiment, the filter material carrying support comprises:

[0020] a support body, which is provided with the airflow hole.

[0021] A plurality of carrier plates, first ends of the plurality of carrier plates are connected to the outer periphery of the support body, the plurality of carrier plates are arranged at intervals around the support body, the plurality of carrier plates are located between two adjacent filter material carrying supports, the filter material carrying supports are located between two adjacent carrier plates, and the filter material carrying supports form the airflow passage.

[0022] A supporting component connected to second ends of the plurality of carrier plates, the supporting component is arranged around the vertical center line of the support body, and the supporting component is used for carrying filter material.

[0023] In a third aspect, the embodiments of the present application provide an air filter, which comprises the air outlet end cover.

[0024] The advantages or beneficial effects of the above technical solutions at least include:

[0025] The air outlet end cover has the following advantages: the first air outlet hole is retained in the air outlet part, so that the basic cross-sectional area of the hole is ensured; at least part of the extension parts is arranged in an arc shape, so that the airflow can be smoothly diverted, the turbulence caused by the right-angle mutation is avoided, the airflow distribution is optimized, the airflow separation is effectively reduced, the vortex is reduced, the air resistance is reduced, the airflow vibration noise is reduced, the cross-sectional area of the second air outlet hole is effectively increased, the total air outlet cross-sectional area is significantly increased (the first air outlet hole + the second air outlet hole), the flow rate of the airflow passing through the second air outlet hole is reduced, the pressure loss is reduced, the air resistance is reduced, and the airflow vibration noise is further reduced.

[0026] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0027] In the drawings, like reference numerals refer to same or similar functionalities throughout the several views. The drawings are not necessarily to scale. It is to be understood that the drawings only depict several embodiments of the disclosure and are not to be considered as limiting its scope.

[0028] Figure 1 FIG. 1 is a perspective view of an air outlet end cover according to an embodiment of the present application;

[0029] Figure 2 FIG. 2 is a sectional view of the air outlet end cover according to the embodiment of the present application;

[0030] Figure 3 It is the three-dimensional structure schematic view of the air filter element of the utility model;

[0031] Figure 4 It is the exploded view of the air filter element of the utility model;

[0032] Figure 5 It is the three-dimensional structure schematic view of the filter material bearing support of the first embodiment in the utility model;

[0033] Figure 6 It is the three-dimensional structure schematic view of the filter material bearing support of the second embodiment in the utility model under the first visual angle;

[0034] Figure 7 It is the three-dimensional structure schematic view of the filter material bearing support shown in the second visual angle; Figure 6

[0035] Figure 8 It is the three-dimensional structure schematic view of the filter material bearing assembly of the second embodiment in the utility model.

[0036] Reference signs

[0037] 1, air outlet end cover; 11, connecting part; 111, connecting groove; 112, installation guide inclined surface; 12, air outlet part; 121, air outlet; 1211, first air outlet hole; 122, extension part; 13, second air outlet hole; 2, limiting end cover; 3, first filter module; 31, air outlet flow channel; 4, second filter module; 41, filter material bearing support; 411, support main body; 4111, air passing hole; 4112, first connecting part; 41121, plug-in part; 4113, second connecting part; 41131, connecting hole; 412, material carrying plate; 413, supporting part; 42, air passing flow channel; 5, primary efficiency filter screen. DETAILED DESCRIPTION

[0038] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0039] Referring to Figures 1-2 , the first aspect, the utility model a preferable implementation mode provides a kind of air outlet end cover 1, air outlet end cover 1 is used to configure in the end of the first filter module 3 of air filter element, including:

[0040] Connecting part 11, connecting part 11 is used to connect with the end of first filter module 3, to configure air outlet end cover 1 on first filter module 3;And​

[0041] The air outlet part 12 is surrounded by the connecting part 11, that is, the connecting part 11 is arranged around the air outlet part 12, the air outlet part 12 is provided with a plurality of air outlet parts 121 and a plurality of extension parts 122, each of the plurality of air outlet parts 121 has a first air outlet hole 1211 for communicating with the air outlet flow channel 31 of the air filter element to output the purified airflow, the extension part 122 is located between the connecting part 11 and the plurality of air outlet parts 121, the first end of the extension part 122 is connected to the air outlet part 121, and the second end of the extension part 122 is connected to the connecting part 11, the second air outlet hole 13 is surrounded by the adjacent two extension parts 122, the air outlet part 12 between the adjacent two connecting parts, and the connecting part 11, of the plurality of extension parts 122, at least part of the cross section of the extension part 122 is arc-shaped, that is, the extension part 122 is inclined to the connecting part 11, and the extension part 122 is arc-shaped.

[0042] The air outlet end cover 1 of the utility model, through the air outlet part 121, the traditional first air outlet hole 1211 is reserved, the basic hole cross-sectional area is guaranteed, at the same time, the cross section of at least part of the extension part 122 in the plurality of extension parts 122 is arranged as arc-shaped, the airflow can be guided to turn smoothly by using the extension part 122, the turbulence caused by the right angle mutation is avoided, at the same time, the effect of optimizing airflow distribution can be achieved, airflow separation can be effectively reduced, vortex generation is reduced, wind resistance can be reduced, at the same time, airflow vibration noise can be reduced, in addition, since the cross section of the extension part 122 is arc-shaped, the design can convert the air outlet surface from a plane to a curved surface, the cross-sectional area of the second air outlet hole 13 can be effectively increased, the total air outlet cross-sectional area (first air outlet hole 1211 + second air outlet hole 13) is significantly increased, the flow velocity of the airflow concentrated through the second air outlet hole 13 is reduced, the pressure loss is reduced, the wind resistance can be reduced, thereby the airflow vibration noise can be further reduced.

[0043] Referring to Figure 2 In an embodiment, the plurality of extension parts 122 are inclined downward toward the direction close to the air outlet part 121 to form a flow guide structure, so that the air outlet is smoother, which is beneficial to further reduce the wind resistance, at the same time, the extension part 122 becomes a cantilever beam structure, which can improve the deformation resistance of the extension part 122, thereby prolonging the service life of the air outlet end cover 1.

[0044] Referring to Figure 1In an embodiment, the first air outlet hole 1211 and the second air outlet hole 13 are both polygonal in cross section, so as to increase the cross sections of the first air outlet hole 1211 and the second air outlet hole 13, reduce the flow rate of the airflow when the airflow is concentrated through the first air outlet hole 1211 and the second air outlet hole 13, reduce the pressure loss, reduce the air resistance, and further reduce the airflow vibration noise.

[0045] Referring to Figure 2 In an embodiment, the bottom wall of the connecting part 11 is provided with a connecting groove 111, the connecting groove 111 is arranged around the air outlet part 12, and the connecting groove 111 is used to cooperate with the end of the first filter module 3, that is, the end of the first filter module 3 is inserted into the connecting groove 111, so as to facilitate quick installation of the air outlet end cover 1 on the first filter module 3.

[0046] Referring to Figure 2 In an embodiment, the sidewall of the connecting groove 111 is provided with an installation guide inclined surface 112, the installation guide inclined surface 112 is arranged outwardly inclined away from the bottom wall of the connecting groove 111, so as to form a guide structure, and the installation guide inclined surface 112 facilitates quick and correct insertion of the end of the first filter module 3 into the connecting groove 111.

[0047] Referring to Figures 3-8 In a preferred embodiment of the second aspect, the utility model provides an air filter element, which comprises the air outlet end cover 1.

[0048] The air filter element has the air outlet end cover 1, the first air outlet hole 1211 is reserved through the air outlet part 121, the basic cross section of the hole is ensured, the cross sections of at least some of the plurality of extension parts 122 are arranged in an arc shape, the airflow can be guided to change direction smoothly, the turbulence caused by the right-angle mutation is avoided, the airflow distribution is optimized, the airflow separation is effectively reduced, the vortex is reduced, the air resistance is reduced, the airflow vibration noise is further reduced, the cross section of the air outlet surface is changed from a plane to a curved surface, the cross section of the second air outlet hole 13 is effectively increased, the total air outlet cross section (the first air outlet hole 1211 + the second air outlet hole 13) is significantly increased, the flow rate of the airflow when the airflow is concentrated through the second air outlet hole 13 is reduced, the pressure loss is reduced, the air resistance is reduced, and the airflow vibration noise is further reduced.

[0049] Referring to Figures 3-4 In an embodiment, the air filter element further comprises:

[0050] The limiting end cover 2 and the air outlet end cover 1 are arranged vertically apart along the air filter element;

[0051] A first filter module 3 is vertically clamped between the air outlet end cover 1 and the limiting end cover 2. An inner periphery of the first filter module 3 forms an air outlet flow channel 31. The air outlet flow channel 31 is communicated with the first filter module 3, the first air outlet hole 1211 and the second air outlet hole 13. The first filter module 3 is used to intercept particulate pollutants in the airflow, that is, the first filter module 3 mainly bears the particulate matter load, thereby reducing the burden of the second filter module 4.

[0052] A second filter module 4 is arranged in the air outlet flow channel 31. The second filter module 4 is communicated with the air outlet flow channel 31. The second filter module 4 is used to filter volatile organic pollutants, odors, tobacco tar and particulate pollutants in the airflow output by the first filter module 3, thereby avoiding large particulate matter pollution.

[0053] Referring to Figures 3-4 In an embodiment, the air filter element further comprises:

[0054] A primary efficiency filter screen 5 is clamped between the air outlet end cover 1 and the limiting end cover 2. The primary efficiency filter screen 5 is sleeved on the outer peripheral wall of the first filter module 3. The primary efficiency filter screen 5 is used to intercept large particulate pollutants in the airflow, thereby reducing the burden of the first filter module 3.

[0055] Referring to Figures 4-8 In an embodiment, the second filter module 4 comprises:

[0056] A plurality of filter material carrying supports 41 are arranged along the vertical direction of the air outlet flow channel 31, and the air flow channels 42 are formed between two adjacent filter material carrying supports 41. The air flow channels 42 are connected to the first filter module 3 and the air outlet flow channel 31. The filter material carrying support 41 has a plurality of air flow holes 4111, and each air flow hole 4111 is connected to the air flow channel 42 and the air outlet flow channel 31. The filter material carrying support 41 is used to carry the filter material. By arranging a plurality of filter material carrying supports 41 along the vertical direction of the air outlet flow channel 31 of the air filter element, a longitudinal layered structure is formed. Each filter material carrying support 41 independently carries the filter material, forming a multi-layer three-dimensional filter material structure, i.e., the filter material is stacked in three dimensions, changing the traditional planar distribution of the filter material to a three-dimensional distribution. The filter material filling amount in a unit volume is significantly increased, thereby improving the adsorption capacity of the filter material. The purification performance of the air filter element is improved, and the service life of the air filter element is prolonged. In addition, since the plurality of filter material carrying supports 41 are arranged along the vertical direction of the air outlet flow channel 31 of the air filter element, the filter material carrying support 41 has a plurality of air flow holes 4111, and each air flow hole 4111 is connected to the air flow channel 42 and the air outlet flow channel 31. The space utilization of the air outlet flow channel is improved, and the airflow can penetrate the multi-layer filter material layer in XYZ three directions, thereby efficiently filtering the airflow using the filter material. At the same time, the reasonable pressure loss is maintained to ensure the airflow efficiency, thereby ensuring the air purification efficiency. In summary, the air filter element breaks through the two-dimensional filter material filling limitation of the traditional air filter element. The filter material filling amount and the airflow efficiency are synergistically improved under the premise of maintaining a reasonable pressure loss. The air purification efficiency is improved, and the service life of the air filter element is prolonged.

[0057] It should be understood that the filter material can be activated carbon, porous ceramic, zeolite, photocatalyst, electrocatalyst, transition metal and its oxide, etc., which are mainly used to filter volatile organic pollutants (such as formaldehyde, benzene, toluene, xylene, ethanol, acetone, etc.), odors, oil fumes, and particulate pollutants. The filter material is bonded to the filter material carrying support 41 by glue.

[0058] In an embodiment, the hole wall of the air flow hole 4111 is used to carry the filter material, i.e., the hole wall of the air flow hole 4111 can carry the filter material, thereby improving the space utilization of the hole wall of the air flow hole 4111, avoiding waste of space, and further increasing the filter material filling amount.

[0059] Referring to Figures 6-8 In an embodiment, the filter material carrying support 41 includes:

[0060] The support body 411 has an air flow hole 4111.

[0061] a plurality of load plates 412, the first ends of the plurality of load plates 412 are connected to the outer periphery of the support body 411, the plurality of load plates 412 are arranged at intervals around the support body 411, the plurality of load plates 412 are located between the adjacent two filter material carrying supports 41, the adjacent two load plates 412 form an air flow channel 42 therebetween, and the load plates 412 are used to carry filter material; and

[0062] a supporting component 413 connected to the second ends of the plurality of load plates 412 to form a structurally stable frame structure, which is beneficial to improve the wind resistance performance of the filter material carrying support 41 and make the filter material less likely to be displaced or collapsed, the supporting component 413 is arranged around the vertical center line of the support body 411, and the supporting component 413 is used to carry filter material, that is, the wall surface of the supporting component 413 can carry filter material to further increase the filter material filling amount and thus further improve the purification performance of the air filter element.

[0063] Referring to Figures 6-7 In an embodiment, the load plates 412 are arranged obliquely, that is, the load plates 412 are at an angle to the tangential direction of the outer periphery of the support body 411, so that the air flow channel 42 is configured to be parallel to the air inlet flow channel of the air filter element, which can reduce the wind resistance and thus reduce the noise during operation of the air filter element.

[0064] Referring to Figure 7 In an embodiment, the vertical projection area of the support body 411 is within the vertical projection area of the supporting component 413, that is, the outer diameter of the supporting component 413 is greater than the outer diameter of the support body 411, so that, since the supporting component 413 serves as the main load-bearing frame of the filter material carrying support 41, it can stably support the support body 411, the load plates 412 and the filter material, and at the same time, it can further improve the wind resistance performance of the filter material carrying support 41 and make the filter material less likely to be displaced or collapsed.

[0065] Referring to Figures 5-8 In an embodiment, the bottom of the filter material carrying support 41 is provided with a first connecting portion 4112, and the top of the filter material carrying support 41 is provided with a second connecting portion 4113.

[0066] The second connecting portion 4113 of the lower one of the adjacent two filter material carrying supports 41 and the first connecting portion 4112 of the upper one are connected to connect the adjacent two filter material carrying supports 41 together. In this way, the vertical stable superposition of the plurality of filter material carrying supports 41 is realized through the cooperation of the first connecting portion 4112 (bottom) and the second connecting portion 4113 (top).

[0067] In an embodiment, the second connecting part 4113 has a connecting hole 41131, the connecting hole 41131 and the corresponding first connecting part 4112 are insertedly matched, that is, the first connecting part 4112 and the second connecting part 4113 are inserted to facilitate the quick assembly of the two adjacent filter material carrying supports 41 without tools, while ensuring that the two adjacent filter material carrying supports 41 are reliably connected together, and in addition, the non-destructive disassembly of the two adjacent filter material carrying supports 41 can be achieved.

[0068] Of course, in other embodiments, the first connecting part 4112 and the second connecting part 4113 can also be connected by clamping or by screwing.

[0069] In an embodiment, the first connecting part 4112 is provided with an insertion part 41121 at one end away from the filter material carrying support 41, the insertion part 41121 and the connecting hole 41131 are insertedly matched, and the cross section of the insertion part 41121 gradually decreases in the direction away from the filter material carrying support 41 to form a self-guiding structure in the shape of a cone or a pyramid, thereby automatically correcting positional deviation when inserted into the connecting hole 41131, improving assembly efficiency, while realizing "insertion locking", and enabling the first connecting part 4112 and the second connecting part 4113 to be reliably connected together.

[0070] In an embodiment, the cross section of the air passing hole 4111 is polygonal, so as to increase the hole wall area of the air passing hole 4111, further increase the filter material filling amount, while also increasing the cross section area of the air passing hole 4111, which is beneficial to reduce the air resistance, thereby further reducing the noise during operation of the air filter element.

[0071] In an embodiment, the cross section of the air passing hole 4111 is hexagonal, so that the support body 411 is formed in a honeycomb structure, which can reduce pressure loss to improve airflow efficiency, thereby improving air purification efficiency.

[0072] Of course, in other embodiments, the cross section of the air passing hole 4111 can be circular, triangular or other special-shaped.

[0073] In a third aspect, the utility model provides an air filter, comprising the above-mentioned air outlet end cover 1.

[0074] The air filter of the utility model, since the above-mentioned air outlet end cover 1 is adopted, the traditional first air outlet hole 1211 is reserved through the air outlet part 121, the basic hole cross section area is ensured, meanwhile, the cross section of at least part of the extension part 122 in the plurality of extension parts 122 is arranged as an arc shape, the extension part 122 can guide the airflow to turn smoothly, turbulence caused by the right angle mutation is avoided, meanwhile, the effect of optimizing the airflow distribution can be achieved, airflow separation can be effectively reduced, vortex generation is reduced, the air resistance can be reduced, meanwhile, the airflow vibration noise can be reduced, in addition, since the cross section of the extension part 122 is arc-shaped, the design can convert the air outlet surface from a plane to a curved surface, the cross section area of the second air outlet hole 13 can be effectively increased, the total air outlet cross section area (the first air outlet hole 1211 + the second air outlet hole 13) is significantly increased, the flow velocity of the airflow concentrated through the second air outlet hole 13 is reduced, the pressure loss is reduced, the air resistance can be reduced, so that the airflow vibration noise can be further reduced.

[0075] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0076] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included at least one feature. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0077] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air outlet end cap for being configured on an end of a first filtration module of an air filter cartridge, the air outlet end cap comprising: The air filter cartridge comprises: a connecting component for connecting with an end of a first filter module; and an air outlet component surrounded by the connecting component, the air outlet component being provided with a plurality of air outlet portions each having a first air outlet hole for communicating with an air outlet flow channel of an air filter element, and a plurality of extension portions between the connecting component and the air outlet portions, a first end of each extension portion being connected to an air outlet portion, a second end of each extension portion being connected to the connecting component, a second air outlet hole being formed by two adjacent extension portions, the air outlet component between the two adjacent connecting components, and the connecting component, the second air outlet hole being for communicating with the air outlet flow channel of the air filter element, wherein at least some of the extension portions have an arc-shaped cross section.

2. The air outlet end cover of claim 1, wherein, Each of the extension portions extends obliquely downward towards the air outlet portion.

3. The air outlet end cover of claim 1, wherein, The first air outlet hole and the second air outlet hole each have a polygonal cross section.

4. The air outlet end cover of claim 1, wherein, The bottom wall of the connecting component is provided with a connecting groove surrounding the air outlet component, the connecting groove being for cooperating with the end of the first filter module.

5. The air outlet end cover of claim 4, wherein, The side wall of the connecting groove is provided with a mounting guide inclined surface inclined outwardly away from the bottom wall of the connecting groove.

6. An air filter element characterized by, The air filter cartridge comprises the air outlet end cover according to any one of claims 1-5.

7. The air filter cartridge of claim 6 wherein, The air filter cartridge further comprises: a limiting end cover and the air outlet end cover being arranged apart along the vertical direction of the air filter cartridge; a first filter module vertically sandwiched between the air outlet end cover and the limiting end cover, an inner periphery of the first filter module forming an air outlet flow channel, the air outlet flow channel communicating with the first filter module, the first air outlet hole, and the second air outlet hole, the first filter module being for intercepting particulate pollutants in the airflow; and 8. The air filter cartridge of claim 7 wherein, a second filter module arranged in the air outlet flow channel, the second filter module communicating with the air outlet flow channel, the second filter module being for filtering volatile organic pollutants, odors, tobacco tar, and particulate pollutants in the airflow output by the first filter module. The second filter module comprises:

9. The air filter cartridge of claim 8 wherein, a plurality of filter material carrying supports arranged apart along the vertical direction of the air outlet flow channel, an air flow channel being formed between two adjacent filter material carrying supports, the air flow channel communicating with the first filter module and the air outlet flow channel, each filter material carrying support having a plurality of air flow holes each communicating with the air flow channel and the air outlet flow channel, the filter material carrying support being for carrying filter material. The filter material carrying support comprises: a support body having the air flow holes; a plurality of material carrying plates, a first end of each material carrying plate being connected to the outer periphery of the support body, the material carrying plates being arranged apart around the support body, the material carrying plates being between two adjacent filter material carrying supports, an air flow channel being formed between two adjacent material carrying plates, the material carrying plate being for carrying filter material; and A support member connecting second ends of the plurality of the carrier plates, the support member being disposed about a vertical center line of the support body, the support member being configured to support the filter medium.

10. An air filter, characterized by The air outlet end cover of any one of claims 1-5.

Images