Exhaust postprocessor and vehicle

Abstract

The utility model discloses an exhaust postprocessor and a vehicle, and relates to the technical field of engine exhaust, the exhaust postprocessor comprises an integrated shell, the integrated shell is provided with an air inlet connecting port and an air outlet, an exhaust processing cavity communicated between the air inlet connecting port and the air outlet is formed in the integrated shell, and the exhaust processing cavity is communicated with the air inlet connecting port and the air outlet. The integrated shell is provided with a disassembly and maintenance opening; the purification module is mounted in the exhaust treatment cavity, and the purification module is arranged on the inner side of the disassembly and maintenance opening and is suitable for being taken out from the disassembly and maintenance opening; and the cover plate is detachably connected to the integrated shell, so that the disassembly maintenance opening is selectively opened or closed. According to the exhaust postprocessor, the purification module can be independently disassembled and assembled relative to the integrated shell, local replacement and maintenance of the exhaust postprocessor can be achieved, the maintenance cost is effectively reduced, then the economic burden of a user is reduced, operation is convenient and fast, and the maintenance efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of engine exhaust technology, and in particular to an exhaust aftertreatment system and a vehicle having the exhaust aftertreatment system. Background Technology

[0002] With increasingly stringent global carbon emission regulations and rising energy efficiency requirements for new energy vehicles, integrated catalytic converters are becoming common in vehicles, combining the aftertreatment unit and muffler into a single assembly. This design achieves a compact layout through structural integration, effectively saving chassis space and reducing manufacturing costs, while simultaneously providing exhaust purification and noise reduction functions to meet stringent emission regulations. However, in actual use, because the aftertreatment module and muffler are integrated using a welding process, when core components such as the aftertreatment unit malfunction, targeted repairs or partial replacements are not possible; the entire assembly must be replaced. This results in poor maintenance convenience and an increase in after-sales maintenance costs of over 40% year-on-year, increasing the financial burden on users and impacting vehicle uptime, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an exhaust aftertreatment system that allows for the separate disassembly and assembly of the purification module, enabling partial replacement and repair of the exhaust aftertreatment system, effectively reducing maintenance costs and thus reducing the economic burden on users. Furthermore, it is convenient to operate and highly efficient in maintenance.

[0004] An exhaust aftertreatment system according to an embodiment of the present invention includes: an integrated housing having an air inlet and an air outlet, an exhaust treatment chamber communicating between the air inlet and the air outlet being formed within the integrated housing, and a disassembly and maintenance port being provided in the integrated housing; a purification module installed in the exhaust treatment chamber, the purification module being located inside the disassembly and maintenance port and adapted to be removed from the disassembly and maintenance port; and a cover plate detachably connected to the integrated housing to allow the disassembly and maintenance port to be selectively opened or closed.

[0005] According to the exhaust aftertreatment system of this utility model, a cover plate is detachably connected to the integrated housing, allowing the cover plate to selectively open or close the disassembly and maintenance port. In this way, if the purification module inside the disassembly and maintenance port malfunctions, the disassembly and maintenance port can be opened by removing the cover plate, enabling the quick removal and replacement of the purification module. Compared with a structure in which the purification module is integrated with the integrated housing, the exhaust aftertreatment system of this application can specifically repair the purification module, avoiding the need to replace the entire exhaust aftertreatment system, effectively reducing maintenance costs, thereby reducing the economic burden on users, improving the user experience, and the disassembly and assembly process is simple, convenient to operate, and highly efficient in maintenance.

[0006] According to some embodiments of the present invention, the exhaust aftertreatment chamber includes an air purification chamber and a silencer chamber. The air purification chamber and the silencer chamber are sequentially connected between the air inlet and the air outlet. The purification module is disposed in the air purification chamber. The disassembly and maintenance port is connected to the air purification chamber. The silencer chamber is provided with a silencer structure.

[0007] According to some embodiments of the present invention, the exhaust aftertreatment unit has an air purification chamber located above at least a portion of the silencer chamber, and the cover plate is detachably connected to the top of the air purification chamber.

[0008] According to some embodiments of the present invention, the exhaust aftertreatment system includes at least two purification modules, which are sequentially distributed between the air intake port and the muffler chamber along the airflow direction.

[0009] According to some embodiments of the present invention, the exhaust aftertreatment device has a disassembly and maintenance port structured as a notch with a semi-circular cross-section, and the shape of the cover plate is adapted to the shape of the disassembly and maintenance port, thereby making the air purification chamber structured as a cylindrical cavity.

[0010] According to some embodiments of the present invention, the exhaust aftertreatment unit is provided with an external mounting housing. One of the mounting housing and the cover plate is provided with at least one positioning part and the other is provided with at least one positioning mating part. At least one positioning part and at least one positioning mating part are positioned and mated in a one-to-one correspondence to restrict the movement of the purification module along the airflow direction.

[0011] According to some embodiments of the exhaust aftertreatment system of the present utility model, the positioning part is constructed as a positioning protrusion, the positioning mating part is constructed as a positioning groove, and the positioning protrusion and the positioning groove are inserted and positioned along the direction perpendicular to the airflow.

[0012] The positioning protrusion and / or the positioning mating part are configured to extend circumferentially along the mounting housing.

[0013] According to some embodiments of the present invention, an elastic seal is provided between the cover plate and the integrated housing, and the elastic seal is arranged around the disassembly and maintenance port.

[0014] According to some embodiments of the present invention, the exhaust aftertreatment unit is detachably connected to the integrated housing via a plurality of connectors.

[0015] This utility model also proposes a vehicle.

[0016] The vehicle according to the present invention includes an exhaust aftertreatment system according to any of the above embodiments.

[0017] The vehicle and the exhaust aftertreatment system described above have the same advantages over the prior art, which will not be repeated here.

[0018] Additional aspects and advantages of this invention will be set forth in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of the exhaust aftertreatment system according to an embodiment of the present utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the exhaust aftertreatment system according to an embodiment of the present utility model. Figure 2 ;

[0022] Figure 3 This is a cross-sectional view of the exhaust aftertreatment system according to an embodiment of the present utility model;

[0023] Figure 4 This is a partial cross-section of the exhaust aftertreatment system according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 5 This is a partial cross-section of the exhaust aftertreatment system according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 6 This is a partial cross-section of the exhaust aftertreatment system according to an embodiment of the present invention. Figure 3 .

[0026] Figure label:

[0027] Exhaust aftertreatment unit 100,

[0028] Integrated housing 1, air inlet connection 11, air inlet pipe 111, air outlet 12, air outlet pipe 121, exhaust treatment chamber 13, air purification chamber 131, silencer chamber 132, disassembly and maintenance port 14, connector 15, second connecting plate 16.

[0029] Purification module 2, mounting housing 21, positioning part 211, gasket 22,

[0030] Cover plate 3, positioning and mating part 31, first connecting plate 32, elastic sealing element 4, noise reduction structure 5, inner core tube 51, micro-perforation 511, inner partition 52. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0035] The following is for reference. Figures 1-6 The exhaust aftertreatment unit 100 according to an embodiment of the present utility model is described. The exhaust aftertreatment unit 100 can realize the separate disassembly and assembly of the purification module 2, and can realize partial replacement and repair of the exhaust aftertreatment unit 100, effectively reducing maintenance costs and thus reducing the economic burden on users. It is also convenient to operate and has high maintenance efficiency.

[0036] like Figures 1-6 As shown, an exhaust aftertreatment unit 100 according to an embodiment of the present invention includes: an integrated housing 1, a purification module 2, and a cover plate 3.

[0037] Specifically, the exhaust aftertreatment system 100 is connected to the exhaust side of the engine to purify the exhaust gas emitted by the engine, reduce the emission of harmful substances, thereby reducing environmental pollution. Furthermore, the exhaust aftertreatment system 100 can improve the vehicle's gas emission indicators and meet increasingly stringent environmental regulations.

[0038] The exhaust aftertreatment unit 100 includes an integrated housing 1, which is the external structure of the exhaust aftertreatment unit 100. The integrated housing 1 protects and accommodates the internal structure of the exhaust aftertreatment unit 100, facilitating the integrated installation of the internal structure and maintaining the neat appearance of the exhaust aftertreatment unit 100. Specifically, the integrated housing 1 has an intake connection port 11 and an exhaust port 12. The intake connection port 11 is located on the intake side of the integrated housing 1 and is used to connect to the exhaust side of the engine. For example, an intake pipe 111 can be connected to the intake connection port 11 to connect the integrated housing 1 to the exhaust side of the engine. The exhaust port 12 is located on the exhaust side of the integrated housing 1, through which gas can be discharged. The exhaust port 12 can also serve as an installation port for connecting an exhaust pipe 121, through which gas is discharged.

[0039] Furthermore, an exhaust treatment chamber 13 is formed within the integrated housing 1, which connects the air intake connection port 11 and the air outlet port 12. That is, the exhaust treatment chamber 13 is located between the air intake connection port 11 and the air outlet port 12. In this way, the exhaust gas generated by the engine combustion can enter the exhaust treatment chamber 13 from the air intake pipe 111 at the air intake connection port 11, flow to the air outlet port 12 after passing through the exhaust treatment chamber 13, and finally be discharged into the outside atmosphere from the air outlet port 12. The integrated housing 1 is provided with a disassembly and maintenance port 14, which allows the exhaust aftertreatment unit 100 to be maintained.

[0040] Furthermore, the exhaust aftertreatment unit 100 also includes a purification module 2, which has a gas purification function. The purification module 2 is installed in the exhaust treatment chamber 13, which means that the purification module 2 can be installed in the integrated housing 1. The purification module 2 is located inside the disassembly and maintenance port 14 and is suitable for being removed from the disassembly and maintenance port 14. That is, the purification module 2 can be removed through the disassembly and maintenance port 14 and can be installed in the exhaust treatment chamber 13 through the disassembly and maintenance port 14.

[0041] The purification module 2 is located inside the disassembly and maintenance port 14 and inside the exhaust treatment chamber 13. That is, the disassembly and maintenance port 14 can be configured to communicate with at least part of the structure of the exhaust treatment chamber 13. In this way, the purification module 2 can be installed and disassembled at the disassembly and maintenance port 14. In the actual design, the size of the disassembly and maintenance port 14 is larger than the size of the purification module 2, which facilitates the installation and disassembly of the purification module 2 and improves the replacement efficiency of the purification module 2.

[0042] In actual operation, the exhaust gas discharged from the engine enters the exhaust treatment chamber 13 through the intake connection port 11. After being purified by the purification module 2 in the exhaust treatment chamber 13, the treated harmless gas can be discharged from the outlet port 12, so as to achieve the purification of the exhaust gas before discharge.

[0043] Furthermore, the exhaust aftertreatment unit 100 also includes a cover plate 3, which serves to shield and close. The cover plate 3 is detachably connected to the integrated housing 1, allowing the disassembly and maintenance port 14 to be selectively opened or closed. Specifically, the cover plate 3 can be detachably connected to the disassembly and maintenance port 14; connecting the cover plate 3 to the integrated housing 1 closes the disassembly and maintenance port 14, and detaching the cover plate 3 from the integrated housing 1 opens the disassembly and maintenance port 14. Its structure is simple, its manufacturing process is easy, and its installation cost is reduced.

[0044] In practical use, the purification module 2 is installed inside the exhaust treatment chamber 13. After connecting the cover plate 3 to the integrated housing 1, the disassembly and maintenance port 14 is closed, thus sealing the purification module 2 through the cover plate 3 to maintain the integrity of the external structure of the integrated housing 1 and reduce the possibility of gas leakage from the disassembly and maintenance port 14. This, in turn, improves the overall sealing performance of the purification module 2 during operation. When the purification module 2 malfunctions, the cover plate 3 can be removed to open the disassembly and maintenance port 14, allowing the purification module 2 to be taken out and separated from the integrated housing 1. A new purification module 2 can then be installed in the exhaust treatment chamber 13, and the cover plate 3 can be reconnected to the integrated housing 1 to complete the replacement of the purification module 2. In this way, the maintenance and replacement of the individual purification module 2 can be achieved, avoiding damage and disassembly of other structures. Furthermore, the exhaust after-processor 100 is a modular product, enabling rapid troubleshooting and repair, and reducing the after-sales maintenance costs of the integrated structure.

[0045] It should be noted that the cover plate 3 can be connected to the integrated housing 1 by fasteners such as bolts, or the cover plate 3 can be connected to the integrated housing 1 by snap-fit, plug-in or other means, so that the cover plate 3 and the integrated housing 1 can be detachably connected. There are various connection methods, which can be flexibly selected.

[0046] According to the exhaust aftertreatment system 100 of this utility model embodiment, a cover plate 3 is detachably connected to the integrated housing 1, allowing the cover plate 3 to selectively open or close the disassembly and maintenance port 14. In this way, if the purification module 2 inside the disassembly and maintenance port 14 malfunctions, the disassembly and maintenance port 14 can be opened by removing the cover plate 3, enabling the quick removal and replacement of the purification module 2. Compared with the structure in which the purification module 2 is integrated with the integrated housing 1, the exhaust aftertreatment system 100 of this application can specifically repair the purification module 2 separately, avoiding the need to replace the entire exhaust aftertreatment system 100, effectively reducing maintenance costs and thus reducing the economic burden on users. Moreover, the replacement process is convenient and will not affect vehicle uptime efficiency, improving the user experience. Furthermore, the disassembly and assembly process is simple, convenient to operate, and has high maintenance efficiency.

[0047] In some embodiments, the exhaust treatment chamber 13 includes an air purification chamber 131 and a silencer chamber 132, which are sequentially connected between the air inlet 11 and the air outlet 12. The purification module 2 is disposed in the air purification chamber 131, and the disassembly and maintenance port 14 is connected to the air purification chamber 131. The silencer chamber 132 is provided with a silencer structure 5.

[0048] Specifically, the air purification chamber 131 is used to purify the gas, and the silencer chamber 132 is used to silence the gas. For example... Figure 3 As shown, the air purification chamber 131 and the silencer chamber 132 are connected, which allows the air to circulate within the air purification chamber 131 and the silencer chamber 132. The air purification chamber 131 and the silencer chamber 132 are sequentially connected between the air inlet 11 and the air outlet 12. That is, the air purification chamber 131 can be set close to the air inlet 11, and the silencer chamber 132 can be set close to the air outlet 12, so that the air can be discharged after passing through the air purification chamber 131 and the silencer chamber 132 in sequence.

[0049] Among them, such as Figure 3 As shown, the air purification chamber 131 is used to accommodate the purification module 2. That is, the gas in the air purification chamber 131 is purified by the purification module 2. The purification module 2 may include a catalyst and a particulate filter. The catalyst can realize the oxidation-reduction reaction to convert harmful gases into harmless gases, water, etc., and the particulate filter can capture and intercept particulate matter in the gas, thereby reducing the emission of harmless gases and particulate matter into the outside air.

[0050] Furthermore, the silencing cavity 132 is used to install the silencing structure 5, allowing the gas inside the silencing cavity 132 to be silenced by the silencing structure 5, thereby reducing the noise of the gas exhaust. The silencing structure 5 may include multiple inner baffles 52 and multiple inner core tubes 51, such as... Figure 3As shown, multiple inner baffles 52 are spaced apart, and multiple inner core tubes 51 are spaced apart. The multiple inner baffles 52 can fix the multiple inner core tubes 51. The spaced distribution of the multiple inner baffles 52 can make the silencing cavity 132 form multiple sub-silencing cavities. The multiple inner baffles 52 and / or the multiple inner core tubes 51 can each be provided with multiple micro-perforation structures 511 to facilitate the flow of air in the inner core tubes 51 and the sub-silencing cavities. Thus, low-frequency noise or high-frequency noise can be eliminated through the multiple sub-silencing cavities to improve the silencing effect of the exhaust gas.

[0051] In actual use, the exhaust gas from the engine enters the air purification chamber 131 through the air intake connection port 11, and is purified by the purification module 2. The purified gas enters the silencer chamber 132 and is silenced by the silencer structure 5, so that the silenced gas can be discharged from the exhaust port 12.

[0052] In the actual design, the air purification chamber 131 is located near the air inlet connection port 11, which allows the exhaust gas to quickly enter the air purification chamber 131 and be purified by the purification module 2. The silencer chamber 132 is located near the air outlet 12, which allows the silenced gas to be discharged, effectively reducing the noise of the exhaust process, and preventing unpurified gas from being discharged directly from the air outlet 12, thus reducing the possibility of harmful gas discharge.

[0053] Furthermore, the disassembly and maintenance port 14 is connected to the air purification chamber 131, meaning that the air purification chamber 131 can be connected to the outside of the integrated housing 1 through the disassembly and maintenance port 14. This facilitates the installation and removal of the purification module 2 inside the air purification chamber 131 through the disassembly and maintenance port 14. The cover plate 3 is detachably connected to the outside of the integrated housing 1 on the air purification chamber 131, allowing selective closing and opening of the disassembly and maintenance port 14. Through the combination of the cover plate 3 and the disassembly and maintenance port 14, the purification module 2 can be repaired and replaced, and the structure is simple and the replacement is convenient.

[0054] In some embodiments, the air purification chamber 131 is located above at least a portion of the silencing chamber 132.

[0055] Specifically, such as Figure 3 As shown, the air purification chamber 131 can be positioned above a portion of the silencing chamber 132, allowing the area above the portion of the silencing chamber 132 to be used for the installation and arrangement of the purification module 2. In other words, the air purification chamber 131 is positioned in the upper region of the exhaust treatment chamber 13, and a portion of the structure of the silencing chamber 132 is located below the air purification chamber 131. The purification module 2 is installed inside the air purification chamber 131, and the silencing structure 5 is installed inside the silencing chamber 132, thus enabling the arrangement of the purification module 2 and the silencing structure 5.

[0056] The air inlet 11 is connected to the air inlet of the air purification chamber 131, and the air outlet 12 is connected to the air outlet of the silencer chamber 132. In this way, the air inlet 11 can be set in the upper area of ​​the exhaust treatment chamber 13, and the air outlet 12 can be set in the lower area of ​​the exhaust treatment chamber 13, so as to realize upper air intake and lower exhaust. The distance between the gas inlet and outlet is long, which is conducive to the purification and silencer of the gas in a sufficient space.

[0057] Furthermore, the cover plate 3 is detachably connected to the top of the air purification chamber 131, that is, the cover plate 3 is connected to the integrated housing 1 at the top of the air purification chamber 131. The top of the air purification chamber 131 is used to arrange the cover plate 3 in a reasonable way. The disassembly and maintenance port 14 is connected to the top of the air purification chamber 131, that is, the cover plate 3 and the disassembly and maintenance port 14 are directly opposite each other. In this way, the purification module 2 can be installed in the air purification chamber 131 through the disassembly and maintenance port 14 at the top of the air purification chamber 131. And if the purification module 2 fails, it can be removed from the disassembly and maintenance port 14 at the top of the air purification chamber 131 to realize the repair and replacement of the purification module 2.

[0058] Therefore, by detachably connecting the cover plate 3 to the integrated housing 1, it is convenient for the purification module 2 to be installed in or removed from the air purification chamber 131, thus improving the convenience of the maintenance process.

[0059] Meanwhile, the cover plate 3 is far away from the lower silencing cavity 132 located in the air purification cavity 131, and the top space of the air purification cavity 131 is spacious and ample, which is conducive to the installation and disassembly of the cover plate 3 and the purification module 2.

[0060] In some embodiments, at least two purification modules 2 are provided, and at least two purification modules 2 are sequentially distributed between the air inlet 11 and the silencer 132 along the airflow direction.

[0061] Specifically, at least two purification modules 2 are sequentially distributed in the air purification chamber 131 along the airflow direction, and at least two purification modules 2 are sequentially distributed between the air inlet 11 and the silencer 132. The airflow direction can be from the air inlet 11, the air purification chamber 131 to the silencer 132, and the air inlet 11 is connected to the air purification chamber 131. The end of the air purification chamber 131 away from the air inlet 11 is connected to the silencer 132, so that the exhaust gas entering from the air inlet 11 first enters the air purification chamber 131, and is treated and purified by the at least two purification modules 2 in the air purification chamber 131. The treated harmless gas enters the silencer 132, and is silenced by the silencer structure 5 in the silencer 132, so that the harmless and low-noise gas can be discharged from the air outlet 12 to achieve gas purification and re-emission.

[0062] The purification module 2 can be configured as two, three, four, etc. In this embodiment, for example... Figure 3 As shown, purification module 2 is configured as two.

[0063] In some embodiments, the disassembly and maintenance port 14 is configured as a notch with a semi-circular cross-section, and the shape of the cover plate 3 is adapted to the shape of the disassembly and maintenance port 14, thereby making the air purification chamber 131 configured as a cylindrical chamber.

[0064] Specifically, the disassembly and maintenance port 14 is designed as a notch with a semi-circular cross-section, allowing the air purification chamber 131 to open at the disassembly and maintenance port 14 with a semi-circular cross-section notch. The notch has a relatively large size, facilitating the installation and removal of the purification module 2 at the disassembly and maintenance port 14. Furthermore, the cover plate 3 can be constructed as a semi-circular arc plate, allowing for a better match between the cover plate 3 and the shape of the disassembly and maintenance port 14, improving the sealing performance of the cover plate 3 over the disassembly and maintenance port 14. This design is also simple in structure, easy to manufacture, and has low installation costs. After the cover plate 3 is connected to the disassembly and maintenance port 14, the air purification chamber 131 becomes a cylindrical cavity. The cylindrical cavity and the structure of the purification module 2 are structurally matched, facilitating the installation of at least two purification modules 2 within the air purification chamber 131. The length direction of the air purification chamber 131 is the airflow direction.

[0065] And such as Figure 3 As shown, the extension length of the cover plate 3 is greater than the length of the disassembly and maintenance port 14, which facilitates the reliable covering of the cover plate 3 on the outside of the disassembly and maintenance port 14 and improves the sealing reliability of the cover plate 3 on the disassembly and maintenance port 14.

[0066] The shape of the cover plate 3 is matched with the shape of the disassembly and maintenance port 14, which makes the cover plate 3 and the disassembly and maintenance port 14 more compatible, improves the sealing reliability of the cover plate 3 to the disassembly and maintenance port 14, and saves on the installation size and cost of the cover plate 3. Moreover, the shape of the cover plate 3 and the disassembly and maintenance port 14 is not limited to a semi-circular cross-section; the cover plate 3 and the disassembly and maintenance port 14 can also be set to other types of arc cross-sections, etc.

[0067] In some embodiments, the purification module 2 is provided with an installation housing 21. One of the installation housing 21 and the cover plate 3 is provided with at least one positioning part 211 and the other is provided with at least one positioning mating part 31. The at least one positioning part 211 and the at least one positioning mating part 31 are positioned and mated in a one-to-one correspondence to restrict the movement of the purification module 2 along the airflow direction.

[0068] Specifically, such as Figures 3-5As shown, the mounting housing 21 is connected to the outside of the purification module 2 and is used to connect the purification module 2 to the integrated housing 1 and other structures. At least one positioning part 211 can be provided in the mounting housing 21, and at least one positioning mating part 31 can be provided in the cover plate 3. Alternatively, at least one positioning mating part 31 can be provided in the mounting housing 21, and at least one positioning part 211 can be provided in the cover plate 3. With these two configuration methods, the cover plate 3 can be connected to the mounting housing 21 through the positioning mating of the positioning part 211 and the positioning mating part 31. The configuration method is limited but can be flexibly selected.

[0069] The number of positioning parts 211 is set to be the same as the number of positioning mating parts 31, so that the positioning mating parts 31 can be positioned and mated in a one-to-one correspondence. The number of positioning parts 211 can be one, two, three, etc., and the number of positioning mating parts 31 can be one, two, three, etc. When there are multiple positioning parts 211 and multiple positioning mating parts 31, the connection reliability between the mounting housing 21 and the cover plate 3 can be improved, thereby improving the installation stability of at least two purification modules 2.

[0070] Furthermore, by positioning and engaging at least one positioning part 211 with at least one positioning and engaging part 31 in a one-to-one correspondence, the mounting housing 21 and the cover plate 3 can be fixed relative to each other in the airflow direction, thereby restricting the flow of the purification module 2 along the airflow direction, so as to keep the position of the purification module 2 relatively stable in the air purification chamber 131, and to ensure the stability of the air purification process.

[0071] It should also be noted that, such as Figure 3 As shown, there are two purification modules 2, and each of the two purification modules 2 is provided with a mounting housing 21. Both purification modules 2 are positioned and cooperated with the cover plate 3 through the mounting housing 21, which can ensure that at least two purification modules 2 are stably positioned in the air purification chamber 131.

[0072] Among them, such as Figure 5 As shown, at least one positioning part 211 or positioning mating part 31 can be provided on the inner wall of the air purification chamber 131. Correspondingly, at least one positioning mating part 31 or positioning part 211 can be provided on the part of the mounting housing 21 near the inner wall of the air purification chamber 131. In this way, the positioning part 211 and the positioning mating part 31 can be positioned and mated with the inner wall of the air purification chamber 131, which can restrict the movement of at least two purification modules 2 relative to the air purification chamber 131, so as to maintain the positional stability of at least two purification modules 2.

[0073] Therefore, by setting the positioning part 211 and the positioning mating part 31 for positioning and mating, the positioning during the installation process is accurate, thereby ensuring that the purification module 2 is in the set position each time it is installed, and improving the installation accuracy of the purification module 2.

[0074] In some embodiments, the positioning part 211 is configured as a positioning protrusion, and the positioning mating part 31 is configured as a positioning groove, with the positioning protrusion and the positioning groove being inserted and positioned perpendicular to the airflow direction.

[0075] In this way, by engaging the positioning protrusion and the positioning groove perpendicular to the airflow direction, the mounting housing 21 and the inner wall of the cover plate 3 and / or the air purification chamber 131 can be positioned perpendicular to the airflow direction, thus restricting the movement of the mounting housing 21 along the airflow direction, and consequently restricting the movement of the purification module 2 along the airflow direction. Furthermore, the positioning protrusion can be inserted into the positioning groove, improving the reliability of the engagement between the positioning protrusion and the positioning groove, thereby improving the positioning reliability of the mounting housing 21 and the inner wall of the cover plate 3 and / or the air purification chamber 131.

[0076] Specifically, a positioning protrusion is provided on the mounting housing 21. The positioning protrusion is configured to protrude outward from the surface of the mounting housing 21, and the protrusion direction of the positioning protrusion is perpendicular to the airflow direction. Figure 4 As shown, a positioning groove is provided on the cover plate 3. The positioning groove is recessed on the inner wall of the cover plate 3 in a direction away from the air purification chamber 131, and the recessed direction of the positioning groove is perpendicular to the airflow direction. The groove depth can be set to be greater than or equal to the protrusion height of the positioning protrusion, which facilitates reliable insertion between the positioning protrusion and the positioning groove. Figure 5 As shown, the positioning groove can also be provided in the air purification chamber 131. The positioning groove is recessed in the inner wall of the air purification chamber 131 in a radial direction away from the air purification chamber 131, so that the positioning protrusion on the mounting housing 21 can be inserted into the positioning groove of the air purification chamber 131 to achieve the positioning fit between the mounting housing 21 and the air purification chamber 131.

[0077] In this way, the mounting housing 21 and the cover plate 3 can be inserted and fitted in a direction perpendicular to the airflow direction, and the mounting housing 21 can be inserted and fitted in a direction perpendicular to the airflow direction to the inner wall of the air purification chamber 131. This can effectively restrict the flow of the purification module 2 in the airflow direction and improve the positional stability of the purification module 2.

[0078] The positioning protrusion and / or positioning mating part 31 are configured to extend circumferentially along the mounting housing 21. That is, the positioning protrusion can be configured to extend circumferentially along the mounting housing 21, and the positioning mating part 31 can be configured to extend circumferentially along the mounting housing 21. Alternatively, both the positioning protrusion and the positioning mating part 31 can be configured to extend circumferentially along the mounting housing 21. The configuration methods are diverse and can be flexibly selected.

[0079] Furthermore, both the positioning protrusion and the positioning mating part 31 can be constructed to be distributed along an arc, which can increase the mating length of the positioning protrusion and the positioning mating part 31 in the circumferential direction, thereby improving the positioning reliability of the mounting housing 21 and the cover plate 3 or the mounting housing 21 and the air purification chamber 131, so as to effectively limit the movement of the purification module 2 in the airflow direction.

[0080] The positioning and mating parts 31 at the air purification chamber 131 can be configured as multiple, and the positioning parts 211 can be configured as multiple. The multiple positioning and mating parts 31 are distributed circumferentially along the mounting housing 21, and the multiple positioning and mating parts 31 are distributed one-to-one with the multiple positioning parts 211. This facilitates the one-to-one insertion and positioning of the multiple positioning and mating parts 31 with the multiple positioning parts 211. In this way, the circumferential movement of the mounting housing 21 relative to the air purification chamber 131 can be restricted, thereby limiting the circumferential position of the purification module 2 and ensuring that the installation position of the purification module 2 is stable and reliable.

[0081] And such as Figure 4 and Figure 5 As shown, a gasket 22 is provided between the mounting housing 21 and the purification module 2. The gasket 22 can be configured to extend along the outer periphery of the purification module 2, so that the gasket 22 fills the space between the mounting housing 21 and the purification module 2. The gasket 22 can be made of materials such as rubber, which can buffer the mounting housing 21 and the purification module 2 and improve the tightness of the installation between the mounting housing 21 and the purification module 2.

[0082] In some embodiments, an elastic seal 4 is provided between the cover plate 3 and the integrated housing 1, and the elastic seal 4 is arranged around the disassembly and maintenance port 14.

[0083] Specifically, such as Figure 6 As shown, an elastic sealing element 4 is provided between the cover plate 3 and the integrated housing 1. The elastic sealing element 4 can fill the gap between the cover plate 3 and the integrated housing 1, thereby sealing the cover plate 3 and the integrated housing 1. The elastic sealing element 4 is located in the outer area of ​​the integrated housing 1 at the disassembly and maintenance port 14, so that the integrated housing 1 at the outer area of ​​the disassembly and maintenance port 14 is sealed to the cover plate 3 through the elastic sealing element 4. The elastic sealing element 4 is distributed around the disassembly and maintenance port 14, so that the cover plate 3 and the integrated housing 1 are sealed circumferentially outside the disassembly and maintenance port 14. This can improve the sealing performance of the cover plate 3 to the disassembly and maintenance port 14, prevent gas leakage inside the disassembly and maintenance port 14, and prevent gas or other impurities outside the disassembly and maintenance port 14 from entering the air purification chamber 131. This can maintain the reliability of the gas purification process in the air purification chamber 131, reduce the noise spread from the exhaust after-processor 100, and reduce the leakage of harmful gases.

[0084] Among them, the elastic seal 4 can be made of rubber or other materials. The elastic seal 4 has elastic compressibility. By placing the elastic seal 4 between the cover plate 3 and the integrated housing 1, the elastic seal 4 can elastically press against the cover plate 3 and the integrated housing 1 respectively, which can improve the sealing performance of the cover plate 3 and the integrated housing 1.

[0085] Furthermore, multiple elastic seals 4 can be provided, and multiple elastic seals 4 can be respectively provided at both ends of the disassembly and maintenance port 14 along its length, so as to seal both ends of the disassembly and maintenance port 14 along its length.

[0086] In some embodiments, the cover plate 3 and the integrated housing 1 are detachably connected by a plurality of connectors 15. That is, the connection strength and reliability between the cover plate 3 and the integrated housing 1 can be improved by the plurality of connectors 15, and the force distribution at the connection between the cover plate 3 and the integrated housing 1 can be uniform, thereby improving the tightness of the connection between the cover plate 3 and the integrated housing 1.

[0087] The connectors 15 can be two, three, four, five, six, etc. In this embodiment, there are four connectors 15, which are spaced apart so that the cover plate 3 and the integrated housing 1 are connected at four positions, improving the reliability and tightness of the connection. The connectors 15 can be configured as connecting bolts and connecting nuts, etc.

[0088] And in actual design, such as Figure 1 and Figure 2 As shown, the cover plate 3 can be constructed as an arc-shaped plate, with first connecting plates 32 respectively provided at both ends of the arc-shaped plate, and the two first connecting plates 32 extending outward along the radial direction of the cover plate 3. Correspondingly, the integrated housing 1 is provided with second connecting plates 16 at both ends of the disassembly and maintenance port 14, and the two second connecting plates 16 extend outward along the radial direction. The two first connecting plates 32 are distributed one-to-one with the two second connecting plates 16, and the two first connecting plates 32 are provided with two first connecting holes, and the two second connecting plates 16 are provided with two second connecting holes, which are distributed one-to-one with the two first connecting holes. There can be four connecting parts. In this way, the two first connecting plates 32 are fitted and connected to the two second connecting plates 16 respectively. Four connecting bolts are sequentially inserted into the corresponding first connecting holes and second connecting holes and then connected to the connecting nuts to detachably connect the two first connecting plates 32 and the two second connecting plates 16. The connection is firm and reliable.

[0089] Furthermore, when disassembly and maintenance are required, simply disassemble the multiple connectors 15 one by one to remove the cover plate 3 from the integrated housing 1, and then take out the purification module 2, which allows for the replacement and maintenance of the purification module 2. The entire maintenance process is simple and convenient, improving operational efficiency and reducing maintenance costs.

[0090] This utility model also proposes a vehicle.

[0091] The vehicle according to the embodiments of the present utility model includes the exhaust aftertreatment unit 100 of any of the above embodiments. The exhaust aftertreatment unit 100 is connected to the exhaust side of the engine and is used to purify and reduce noise of harmful gases generated by engine combustion. The exhaust aftertreatment unit 100 includes: an integrated housing 1, a purification module 2, and a cover plate 3. By setting the cover plate 3 to be detachably connected to the integrated housing 1, the cover plate 3 can selectively open or close the disassembly and maintenance port 14. In this way, after the purification module 2 fails, the disassembly and maintenance port 14 can be opened by removing the cover plate 3, so that the purification module 2 can be quickly removed and replaced. Compared with the structure in which the purification module 2 is integrated with the integrated housing 1, the exhaust aftertreatment unit 100 of this application can be repaired separately for the purification module 2, avoiding the need to replace the entire exhaust aftertreatment unit 100, effectively reducing maintenance costs, thereby reducing the economic burden on users, improving the user experience, and the disassembly and assembly process is simple, convenient to operate, and has high maintenance efficiency.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An exhaust gas aftertreatment device, characterized in that include: An integrated housing (1) is provided with an air inlet (11) and an air outlet (12). An exhaust treatment chamber (13) is formed inside the integrated housing (1) and communicates between the air inlet (11) and the air outlet (12). The integrated housing (1) is provided with a disassembly and maintenance port (14). Purification module (2), the purification module (2) is installed in the exhaust treatment chamber (13), the purification module (2) is located inside the disassembly and maintenance port (14), and is adapted to be removed from the disassembly and maintenance port (14); A cover plate (3) is detachably connected to the integrated housing (1) so that the disassembly and maintenance port (14) can be selectively opened or closed.

2. The exhaust aftertreatment device of claim 1, wherein, The exhaust treatment chamber (13) includes an air purification chamber (131) and a silencer chamber (132). The air purification chamber (131) and the silencer chamber (132) are connected sequentially between the air inlet (11) and the air outlet (12). The purification module (2) is located in the air purification chamber (131). The disassembly and maintenance port (14) is connected to the air purification chamber (131). The silencer chamber (132) is provided with a silencer structure (5).

3. The exhaust aftertreatment device of claim 2, wherein, The air purification chamber (131) is located above at least a portion of the silencing chamber (132), and the cover plate (3) is detachably connected to the top of the air purification chamber (131).

4. The exhaust aftertreatment device of claim 2, wherein, The purification module (2) is configured to be at least two, and the at least two purification modules (2) are sequentially distributed between the air inlet (11) and the silencer (132) along the airflow direction.

5. The exhaust aftertreatment device of claim 2, wherein, The disassembly and maintenance port (14) is constructed as a notch with a semi-circular cross-section, and the shape of the cover plate (3) is adapted to the shape of the disassembly and maintenance port (14) and the air purification chamber (131) is constructed as a cylindrical chamber.

6. The exhaust aftertreatment device of any one of claims 1-5, wherein, The purification module (2) is provided with an installation housing (21). One of the installation housing (21) and the cover plate (3) is provided with at least one positioning part (211) and the other is provided with at least one positioning mating part (31). At least one positioning part (211) and at least one positioning mating part (31) are positioned and mated in a one-to-one correspondence to restrict the movement of the purification module (2) along the airflow direction.

7. The exhaust aftertreatment device of claim 6, wherein, The positioning part (211) is constructed as a positioning protrusion, and the positioning mating part (31) is constructed as a positioning groove. The positioning protrusion and the positioning groove are inserted and positioned perpendicular to the airflow direction. The positioning protrusion and / or the positioning mating part (31) are configured to extend circumferentially along the mounting housing (21).

8. The exhaust aftertreatment device of any one of claims 1-5, wherein, An elastic seal (4) is provided between the cover plate (3) and the integrated housing (1), and the elastic seal (4) is arranged around the disassembly and maintenance port (14).

9. The exhaust aftertreatment device of any one of claims 1-5, wherein, The cover plate (3) and the integrated housing (1) are detachably connected by a plurality of connectors (15).

10. A vehicle characterized by comprising: The exhaust aftertreatment system includes any one of claims 1-9.

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