Air inlet assembly and aftertreatment device

Abstract

According to the air inlet assembly and the post-processing device, the transverse hole plate is arranged opposite to the air inlet, air flow is exhausted from the air inlet pipe and then enters the turbulent flow cavity formed by the side, away from the air inlet, of the transverse hole plate, the perforated plate and the air inlet shell through the holes in the transverse hole plate, and therefore the flow speed of part of the air flow exhausted from the air inlet pipe can be reduced; the vortex phenomenon is improved, and then the flow velocity distribution is improved through the holes in the perforated plate, so that the flow velocity uniformity of the air inlet end of the DOC carrier is improved, and the overall performance of the DOC carrier is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of post-treatment, and particularly to an intake assembly and a post-treatment device. Background Art

[0002] Diesel engines emit a large amount of hydrocarbons in the exhaust gas. Although for the vast majority of hydrocarbons, when their content in the atmosphere is not high, it will not cause direct harm to human health, there are still a small number of hydrocarbons (such as 3,4-benzopyrene generated by incomplete combustion of fuel, etc.) that can cause cancer in humans even when their content in the atmosphere is low and the concentration is low. And some other hydrocarbons (such as benzene, toluene, xylene, etc.) are prone to induce human abnormalities and cancers and cause serious harm to the human body when their concentration in the atmosphere is high. Some hydrocarbons will also be converted into secondary pollutants and cause harmful photochemical smog under certain conditions (such as when mixed with nitrogen oxides, ozone, etc. in the atmosphere and irradiated by sunlight).

[0003] Currently, reducing hydrocarbon emissions through oxidation-reduction technology (Diesel Oxidation Catalyst, DOC) has become the first choice of major domestic vehicle manufacturers. The uniformity of the air flow at the end face of the DOC carrier has an important impact on the overall performance and durability of the system.

[0004] However, in the current post-treatment device, the intake air flow is not uniform enough, resulting in phenomena such as too low conversion efficiency of hydrocarbons in some areas and uneven aging of the catalyst, thus affecting the overall performance of the DOC carrier. Utility Model Content

[0005] The purpose of the present application is to provide an intake assembly and a post-treatment device to improve the flow velocity uniformity at the intake end of the DOC carrier, thereby ensuring the overall performance of the DOC carrier.

[0006] The embodiments of the present application can be implemented as follows:

[0007] In a first aspect, the present utility model provides an intake assembly, including an intake housing, an intake pipe, and a spoiler;

[0008] The intake housing is provided with an intake port, and the intake pipe is connected to the intake port;

[0009] The spoiler is located between the intake housings. The spoiler includes a perforated plate and a transverse hole plate connected to the perforated plate at an angle. The transverse hole plate is connected to the intake end cover of the intake housing and is opposite to the intake port. The outer peripheral shape of the perforated plate is adapted to the inner wall shape of the cylindrical part of the intake housing, and the outer peripheral edge of the perforated plate is connected to the inner wall of the cylindrical part of the intake housing.

[0010] In an alternative embodiment, a gap is left between each end of the transverse hole plate and the cylindrical body portion;

[0011] and / or,

[0012] On the side of the transverse hole plate away from the porous plate, feet are formed, and the feet are connected to the air inlet end cover, so that a second gap is left between the side of the transverse hole plate away from the porous plate and the air inlet end cover.

[0013] In an alternative embodiment, the part of the outer peripheral edge of the porous plate closest to the air inlet is connected to the cylindrical body portion at a position on the side of the air inlet away from the air inlet end cover.

[0014] In an alternative embodiment, the porous plate includes a main hole plate and a bent hole plate connected at an angle. The main hole plate is perpendicular to the axis of the air inlet housing. The boundary line between the main hole plate and the bent hole plate faces the air inlet, and the distances from both ends of the connection between the main hole plate and the bent hole plate to the center of the air inlet are equal;

[0015] The bent hole plate is inclined away from the air inlet end cover, and the part of the bent hole plate away from the main hole plate is connected to the cylindrical body portion at a position on the side of the air inlet away from the air inlet end cover;

[0016] The transverse hole plate is connected to the main hole plate at an angle.

[0017] In an alternative embodiment, the transverse hole plate is closer to the connection between the main hole plate and the bent hole plate at the part of the transverse hole plate away from the bent hole plate relative to the main hole plate.

[0018] In an alternative embodiment, the main hole plate includes a first hole and a second hole. The aperture of the first hole is larger than that of the second hole. Multiple rows of the first holes and multiple rows of the second holes are both arranged in a direction perpendicular to the boundary line between the main hole plate and the bent hole plate, and each row of the first holes and each row of the second holes are both arranged in the direction of the boundary line between the main hole plate and the bent hole plate;

[0019] Among them, in the area of the main hole plate on the side away from the air inlet at the connection of the transverse hole plate, multiple rows of the first holes are closer to the air inlet than multiple rows of the second holes.

[0020] In an alternative embodiment, at least two of the first holes in the row of the first holes on the main hole plate closest to the air inlet are provided. In this row of first holes, the area between two adjacent first holes is connected to the transverse hole plate;

[0021] and / or,

[0022] In the area of the main orifice plate near the air inlet side at the connection of the transverse orifice plate, there is a row of the second orifices;

[0023] and / or,

[0024] The aperture of the openings provided on the bent orifice plate is the same as that of the second orifices.

[0025] In an alternative embodiment, the angle of the obtuse angle formed between the bent orifice plate and the main orifice plate is 140 - 150°;

[0026] and / or,

[0027] The arrangement direction of each row of openings provided on the bent orifice plate is the same as that of each row of openings on the main orifice plate;

[0028] and / or,

[0029] The transverse orifice plate is perpendicular to the main orifice plate.

[0030] In an alternative embodiment, the aperture of the openings provided on the transverse orifice plate is the same as that of at least part of the openings provided on the porous plate;

[0031] and / or,

[0032] The arrangement direction of each row of openings provided on the transverse orifice plate is the same as that of each row of openings on the porous plate;

[0033] and / or,

[0034] The transverse orifice plate is perpendicular to the porous plate.

[0035] In a second aspect, the present utility model provides a post-treatment device, including the air inlet assembly according to any one of the foregoing embodiments.

[0036] Compared with the prior art, the beneficial effects of the embodiments of the present application include, for example:

[0037] By arranging the transverse orifice plate opposite to the air inlet, after the air flow is discharged from the air inlet pipe, part of it enters the turbulence chamber formed by the porous plate and the air inlet housing on the side of the transverse orifice plate away from the air inlet through the openings on the transverse orifice plate, so that the flow rate of part of the air flow discharged from the air inlet pipe can be reduced, the vortex phenomenon can be improved, and then the flow rate distribution can be improved through the openings on the porous plate to improve the flow rate uniformity at the air inlet end of the DOC carrier, thereby ensuring the overall performance of the DOC carrier. Description of the Drawings

[0038] To more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is the intake air simulation velocity streamline diagram of the post-treatment product in the prior art;

[0040] Figure 2 It is the intake air simulation flow direction velocity contour map of the post-treatment product in the prior art;

[0041] Figure 3 It is the schematic diagram of the post-treatment device in the embodiment of the present application;

[0042] Figure 4 It is Figure 3 the exploded view of;

[0043] Figure 5 It is Figure 3 the sectional view of;

[0044] Figure 6 It is Figure 5 the schematic diagram of the spoiler in;

[0045] Figure 7 It is the intake air simulation velocity streamline diagram of the intake air component in the embodiment of the present application;

[0046] Figure 8 It is the intake air simulation flow direction velocity contour map of the intake air component in the embodiment of the present application.

[0047] Icon: 1 - intake pipe; 2 - intake housing; 3 - carrier assembly; 12 - intake end cover; 13 - transverse hole plate; 13.1 - fourth hole; 13.2 - support leg; 13.3 - spoiler side; 14 - perforated plate; 14.1 - third hole; 14.2 - bent perforated plate; 14.3 - first hole; 14.4 - main perforated plate; 14.5 - second hole; 15 - cylinder part; 16 - DOC carrier; 16.1 - intake end; 16.2 - outlet end; 17 - gasket; 18 - carrier housing. Specific Embodiments

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0049] Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0050] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. It is only for the convenience of describing the present application 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 thus cannot be construed as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0052] In addition, terms such as "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0053] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0054] It should also be noted that the "vertical" of the present application does not mean that it must be completely vertical at 90°, but can also have a slight deviation and be approximately vertical.

[0055] The following will describe in detail some embodiments of the present application in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0056] In the prior art, due to installation space limitations, after-treatment products often face the situation where the intake direction is perpendicular to the axial direction of the DOC. For such a side-inlet structure, since the intake air velocity is fast and concentrated on one side, through the research of the inventor, the current intake air streamline simulation diagram of this product is as follows Figure 1 shown. After the air flow enters the intake housing from the intake pipe 1, the flow velocity in the middle area is fast, while the flow velocity on the left and right wall surfaces is slow. Therefore, two vortices will be formed by rotating along the left and right wall surfaces. There are fewer streamlines and slower velocities at the centers of the vortices, resulting in low uniformity of the intake air velocity at the intake end of the DOC carrier 16 (refer to Figure 2 ), which affects the overall performance of the DOC carrier 16.

[0057] In view of this, the inventor has proposed a post-treatment device through research to improve this problem, which will be described in detail below.

[0058] Combined with Figure 3 and Figure 4 , an embodiment of the present application discloses a post-treatment device, which includes an intake assembly, a carrier assembly 3, and an outlet assembly (not shown). The intake assembly is mainly used for introducing exhaust gas. The intake assembly is connected to one end of the carrier assembly 3, and the other end of the carrier assembly 3 is connected to the outlet assembly.

[0059] The carrier assembly 3 includes a carrier housing 18, a DOC carrier 16 installed in the carrier housing 18, and a gasket 17 sleeved between the DOC carrier 16 and the carrier housing 18. Both ends of the carrier housing 18 are respectively connected to the intake assembly and the outlet assembly. The intake end of the DOC carrier 16 faces the intake assembly, and the outlet end of the DOC carrier 16 faces the outlet assembly.

[0060] In this way, the exhaust gas reaches the intake end of the DOC carrier 16 through the intake assembly, is catalytically treated by the DOC carrier 16, and then is discharged from the outlet end, and then is discharged to the outside through the outlet assembly.

[0061] Combined with Figure 5 and Figure 6 , the intake assembly includes an intake housing, an intake pipe 1, and a spoiler. The intake housing is provided with an intake port, and the intake pipe 1 is connected to the intake port. The spoiler is located inside the intake housing. The spoiler includes a perforated plate 14 and a transverse hole plate 13 connected to the perforated plate 14 at an angle. The transverse hole plate 13 is connected to the intake end cover 12 of the intake housing and is opposite to the intake port. In this way, the transverse hole plate 13 is located on the side of the perforated plate 14 close to the intake end cover 12. The outer peripheral shape of the perforated plate 14 is adapted to the inner wall shape of the cylindrical part 15 of the intake housing, and the outer peripheral edge of the perforated plate 14 is connected to the inner wall of the cylindrical part 15 of the intake housing.

[0062] The air outlet assembly includes an air outlet end cover, an air outlet cylinder body, and an air outlet pipe. One end of the air outlet cylinder body is connected to the carrier housing 18, the air outlet end cover is connected to the other end of the air outlet cylinder body, and the air outlet pipe passes through the air outlet end cover. In this way, the treated exhaust gas discharged from the air outlet end of the DOC carrier 16 can be discharged to the outside through the air outlet pipe.

[0063] In this way, by arranging the transverse hole plate 13 opposite to the air inlet, after the air flow is discharged from the air inlet pipe 1, it enters the side of the transverse hole plate 13 away from the air inlet (turbulence side 13.3) through the openings on the transverse hole plate 13 and into the turbulence chamber formed by the porous plate 14 and the air inlet housing together. This can reduce the flow velocity of part of the air flow after it is discharged from the air inlet pipe 1, improve the vortex phenomenon, and then improve the flow velocity distribution through the openings on the porous plate 14 to improve the flow velocity uniformity at the air inlet end of the DOC carrier 16, thereby ensuring the overall performance of the DOC carrier 16.

[0064] Specifically, the air inlet end cover 12 and the cylinder body part 15 are welded and fixed. The air inlet is jointly formed by the air inlet end cover 12 and the cylinder body part 15 of the air inlet housing. There are gaps left between the two ends of the transverse hole plate 13 and the cylinder body part 15 respectively. In this way, part of the air flow introduced into the air inlet housing from the air inlet pipe 1 can enter the turbulence chamber from the gaps on both sides of the transverse hole plate 13, so that the air flow entering the turbulence chamber directly through the openings on the transverse hole plate 13 and the air flow entering the turbulence chamber from the aforementioned gaps are mixed to ensure the flow velocity uniformity at the air inlet end of the DOC carrier 16 after passing through the porous plate 14.

[0065] Among them, the shapes and sizes of the gaps on both sides can be the same or different. If they are the same, first gaps are formed between the two ends of the transverse hole plate 13 and the cylinder body part respectively.

[0066] The transverse hole plate 13 and the air inlet can be completely corresponding or partially corresponding, and this application does not make specific restrictions as long as it can play a role in disturbing the flow.

[0067] On the side of the transverse hole plate 13 away from the porous plate 14, there are formed support legs 13.2. The support legs 13.2 are connected to the air inlet end cover 12. For example, they can be welded to have sufficient connection strength and reliability, increasing the structural stability. At the same time, welding the support legs 13.2 to the air inlet end cover 12 can also reduce the welding difficulty. In addition, due to the setting of the support legs 13.2, a second gap can be left between the side of the transverse hole plate 13 away from the porous plate 14 and the air inlet end cover 12. In this way, the air flow can also enter the turbulence chamber from the second gap, further ensuring the uniformity of air flow mixing.

[0068] Among them, the number of the support legs 13.2 can be one, two, or more than two, and this application does not limit this.

[0069] Of course, the supporting feet 13.2 can also adopt other connection methods with the air inlet end cover 12, such as screwing, clamping or riveting, etc., as long as the fixation between the two can be achieved.

[0070] In this embodiment, the part of the outer peripheral edge of the porous plate 14 closest to the air inlet is connected to the position on the cylindrical part 15 on the side of the air inlet away from the air inlet end cover 12. That is to say, the distance between the upper part of the outer peripheral edge of the porous plate 14 and the air inlet end cover 12 is greater than the diameter of the air inlet, and the outlet of the air inlet pipe 1 is integrally communicated with the space between the porous plate 14 and the air inlet housing; in other words, that is, the upper part of the outer peripheral edge of the porous plate 14 does not pass through the air inlet.

[0071] Of course, in some embodiments, according to actual requirements, the upper part of the outer peripheral edge of the porous plate 14 can also pass through the air inlet.

[0072] In this embodiment, the porous plate 14 includes a main hole plate 14.4 and a bent hole plate 14.2 connected at an angle. The main hole plate 14.4 is perpendicular to the axis of the air inlet housing. The dividing line between the main hole plate 14.4 and the bent hole plate 14.2 faces the air inlet, and the distances from both ends of the connection between the main hole plate 14.4 and the bent hole plate 14.2 to the center of the air inlet are equal. The bent hole plate 14.2 is inclined in the direction away from the air inlet end cover 12, and the part of the bent hole plate 14.2 away from the main hole plate 14.4 is connected to the position on the cylindrical part 15 on the side of the air inlet away from the air inlet end cover 12; the transverse hole plate 13 is connected to the main hole plate 14.4 at an angle.

[0073] In this way, by setting the main hole plate 14.4 perpendicular to the axis of the air inlet housing, and the bent hole plate 14.2 is connected to the main hole plate 14.4 at an angle and inclined in the direction away from the air inlet end cover 12, this can make the distance between the main hole plate 14.4 and the air inlet end cover 12 closer, which is also convenient for the welding and fixation between the entire spoiler and the air inlet housing. At the same time, it is convenient for the upper part of the porous plate 14 to fit with the cylindrical part 15 of the air inlet housing, and at the same time ensure that all the exhaust gas introduced into the air inlet will first pass through the space between the porous plate 14 and the air inlet housing to achieve overall flow disturbance. One part directly leads to the air inlet end of the DOC carrier 16 through the openings of the bent hole plate 14.2, and the other part enters the flow disturbance cavity through the openings on the transverse hole plate 13 and the first gap / second gap, and then leads to the air inlet end of the DOC carrier 16 through the openings on the main hole plate 14.4, improving the uniformity of the flow velocity distribution.

[0074] Specifically, the angle of the internal obtuse angle formed between the bent hole plate 14.2 and the main hole plate 14.4 is 140 - 150°, for example, it can be 150°, so as to facilitate the bent hole plate 14.2 to avoid the air inlet. Of course, the so-called internal obtuse angle is the concave inner angle side between the bent hole plate 14.2 and the main hole plate 14.4, and the corresponding external acute angle is the protruding outer angle side between the two.

[0075] The distance between the transverse hole plate 13 and the central axis of the intake housing can be 35 mm, so as to better eliminate the low-speed air flow vortices formed on both sides due to the relatively high middle flow velocity after the air flow enters from the intake pipe 1.

[0076] The distance between the main hole plate 14.4 and the intake end face of the DOC carrier 16 can be 50 mm, so that the air flow has enough distance to mix evenly after passing through the openings on the perforated plate 14, thereby making the flow velocity reaching the intake end face of the DOC carrier 16 more uniform.

[0077] The transverse hole plate 13 is perpendicular to the main hole plate 14.4 of the perforated plate 14. The transverse hole plate 13 is located at a position on the main hole plate 14.4 close to the connection between the main hole plate 14.4 and the bent hole plate 14.2, that is, the transverse hole plate 13 is closer to the connection between the main hole plate 14.4 and the bent hole plate 14.2 relative to the part of the main hole plate 14.4 far from the bent hole plate 14.2. In this way, the transverse hole plate 13 can be closer to the air inlet, better playing the role of disturbing the flow, and at the same time making the disturbing chamber large enough to facilitate the uniform mixing of multiple air flows entering the disturbing chamber from the openings of the transverse hole plate 13, the first gap and the second gap.

[0078] More specifically, the openings provided on the main hole plate 14.4 are divided into the first holes 14.3 and the second holes 14.5 according to the hole diameter. The hole diameter of the first holes 14.3 is larger than that of the second holes 14.5. Multiple rows of the first holes 14.3 and multiple rows of the second holes 14.5 are both arranged along the direction perpendicular to the boundary line between the main hole plate 14.4 and the bent hole plate 14.2, and each row of the first holes 14.3 and each row of the second holes 14.5 are both arranged along the direction of the boundary line between the main hole plate 14.4 and the bent hole plate 14.2; among them, in the area of the main hole plate 14.4 on the side far from the air inlet at the connection of the transverse hole plate 13, multiple rows of the first holes 14.3 are closer to the air inlet than multiple rows of the second holes 14.5.

[0079] In this way, by setting the first holes 14.3 with larger hole diameters above the second holes 14.5 with smaller hole diameters, it can better adapt to the air flow distribution in the disturbing chamber. The part with a larger flow velocity passes through the second holes 14.5 and leads to the rear, and the part with a smaller flow velocity passes through the first holes 14.3 and leads to the rear, so as to better make the air flow mix evenly behind the perforated plate 14.

[0080] Among them, there are at least two first holes 14.3 in the row on the main orifice plate 14.4 closest to the air inlet. In this row of first holes 14.3, the area between two adjacent first holes 14.3 is connected to the transverse orifice plate 13; at the same time, there is a row of second holes 14.5 in the area of the main orifice plate 14.4 on the side close to the air inlet at the connection of the transverse orifice plate 13; the arrangement direction of each row of openings provided on the bent orifice plate 14.2 is the same as the arrangement direction of each row of openings on the main orifice plate 14.4; the arrangement direction of each row of openings provided on the transverse orifice plate 13 is the same as the arrangement direction of each row of openings provided on the perforated plate 14.

[0081] Among them, 5 rows of first holes 14.3 can be provided on the main orifice plate 14.4. The aperture of the first holes 14.3 can be 11 mm, and the hole pitch of the first holes 14.3 in the same row can be 14 mm. 5 rows of second holes 14.5 can be provided on the main orifice plate 14.4. The aperture of the second holes 14.5 can be 8 mm, and the hole pitch of the second holes 14.5 in the same row can be 12 mm. The airflow becomes more uniform after passing through the small holes. At the same time, due to the relatively high through-hole rate, the overall exhaust back pressure is small. The aperture of the openings provided on the bent orifice plate 14.2 is the same as the aperture of the second holes 14.5. That is, for example, 3 rows of third holes 14.1 are provided on the bent orifice plate 14.2, and the aperture of the third holes 14.1 is the same as the aperture of the second holes 14.5, which is also 8 mm, and the hole pitch of the second holes 14.5 in the same row can also be 12 mm.

[0082] The aperture of the openings provided on the transverse orifice plate 13 is the same as the aperture of at least part of the openings provided on the perforated plate 14. Specifically, taking the openings provided on the transverse orifice plate 13 as the fourth holes 13.1, two rows of fourth holes 13.1 can be provided. The aperture of the fourth holes 13.1 can be 11 mm, and the hole pitch of the fourth holes 13.1 in the same row can be 14 mm. Therefore, it is the same as the aperture of the first holes 14.3 and the hole pitch of the first holes 14.3 in the same row respectively. Part of the airflow enters the turbulence chamber through the fourth holes 13.1, playing a role in disturbing the flow.

[0083] Thus, the combined effect Figure 7 and Figure 8 , for the intake assembly of this embodiment, the fresh high-temperature fluid is shunted through the transverse orifice plate 13 to reduce the flow rate of the extended part of the intake pipe 1 in the intake housing. With the assistance of the perforated plate 14, the aperture and hole pitch of the perforated plate 14 are analyzed and optimized, so that the airflow has better uniformity when reaching the intake end 16 after passing through the small holes, and at the same time the overall back pressure is small. In addition, the spoiler has a simple structure, strong manufacturability, and is mostly a flat plate with openings, which can effectively reduce the mold cost.

[0084] Of course, it should also be noted that the pore diameters of the openings on the porous plate 14 are not limited to the above two types, namely the first hole 14.3 and the second hole 14.5. In some embodiments, the pore diameters may also be arranged in a manner such that they gradually increase in the direction from the part of the porous plate 14 away from the air inlet to the part close to the air inlet, and so on.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An air intake assembly, characterized in that: It comprises an air intake housing, an air intake pipe (1) and a spoiler; The air intake housing is provided with an air intake port, and the air intake pipe (1) is connected to the air intake port; The spoiler is located inside the air intake housing, and comprises a porous plate (14) and a transverse hole plate (13) connected at an angle to the porous plate (14); the transverse hole plate (13) is connected to the air intake end cover (12) of the air intake housing and is opposite to the air intake port; the shape of the outer peripheral edge of the porous plate (14) is matched with the shape of the inner wall of the barrel portion (15) of the air intake housing; and the outer peripheral edge of the porous plate (14) is connected to the inner wall of the barrel portion (15) of the air intake housing.

2. The air intake assembly according to claim 1, characterized in that: Gaps are respectively left between the two ends of the transverse hole plate (13) and the cylindrical body (15); and / or, A support foot (13.2) is formed on a side of the transverse hole plate (13) away from the porous plate (14), and the support foot (13.2) is connected to the air intake end cover (12) so that a second gap is left between the side of the transverse hole plate (13) away from the porous plate (14) and the air intake end cover (12).

3. The air intake assembly according to claim 1 or 2, characterized in that: The portion of the outer peripheral edge of the porous plate (14) closest to the air inlet is connected to a position on the cylinder portion (15) located on a side of the air inlet away from the air inlet end cover (12).

4. The air intake assembly according to claim 3, characterized in that: The perforated plate (14) comprises a main perforated plate (14.4) and a bent perforated plate (14.2) connected at an angle, the main perforated plate (14.4) is perpendicular to the axial direction of the air inlet housing, a dividing line between the main perforated plate (14.4) and the bent perforated plate (14.2) is opposite to the air inlet, and the distances from both ends of the connection between the main perforated plate (14.4) and the bent perforated plate (14.2) to the center of the air inlet are equal; The bent orifice plate (14.2) is inclined in a direction away from the air inlet end cover (12), and a portion of the bent orifice plate (14.2) away from the main orifice plate (14.4) is connected to a position on the cylinder portion (15) located on a side of the air inlet away from the air inlet end cover (12); The transverse hole plate (13) is connected to the main hole plate (14.4) at an angle.

5. The air intake assembly according to claim 4, characterized in that: The transverse orifice plate (13) is closer to the connection between the main orifice plate (14.4) and the bent orifice plate (14.2) at a position farther away from the bent orifice plate (14.2) relative to the main orifice plate (14.4).

6. The air intake assembly according to claim 4 or 5, characterized in that: The main orifice plate (14.4) comprises a first hole (14.3) and a second hole (14.5); the diameter of the first hole (14.3) is larger than the diameter of the second hole (14.5); the plurality of rows of the first holes (14.3) and the plurality of rows of the second holes (14.5) are arranged along a direction perpendicular to a boundary line between the main orifice plate (14.4) and the bent orifice plate (14.2); each row of the first holes (14.3) and each row of the second holes (14.5) are arranged along a direction of a boundary line between the main orifice plate (14.4) and the bent orifice plate (14.2); Wherein, in an area on the main orifice plate (14.4) located at a side away from the air inlet at the connection with the transverse orifice plate (13), the plurality of rows of the first holes (14.3) are closer to the air inlet than the plurality of rows of the second holes (14.5).

7. The air intake assembly according to claim 6, characterized in that: The first holes (14.3) in a row closest to the air inlet on the main hole plate (14.4) are at least two, and in the first holes (14.3) in this row, the area between two adjacent first holes (14.3) is connected to the transverse hole plate (13); and / or, A row of the second holes (14.5) is provided on the main orifice plate (14.4) in an area located at a connection point with the transverse orifice plate (13) and close to the air inlet; and / or, The aperture of the opening provided on the bent orifice plate (14.2) is the same as the aperture of the second hole (14.5).

8. The air intake assembly according to claim 6, characterized in that: The inner angle formed between the bent orifice plate (14.2) and the main orifice plate (14.4) is 140-150°; and / or, The arrangement direction of each row of openings provided on the bent orifice plate (14.2) is the same as the arrangement direction of each row of openings on the main orifice plate (14.4); and / or, The transverse hole plate (13) is perpendicular to the main hole plate (14.4).

9. The air intake assembly according to claim 8, characterized in that: The aperture of the openings provided on the transverse hole plate (13) is the same as the aperture of at least part of the openings provided on the porous plate (14); and / or, The arrangement direction of each row of openings provided on the transverse perforated plate (13) is the same as the arrangement direction of each row of openings provided on the multi-perforated plate (14); and / or, The transverse hole plate (13) is perpendicular to the porous plate (14).

10. A post-processing device, characterized in that: Comprising the air intake assembly according to any one of claims 1 to 9.

Images