An air cleaner intake device and vehicle

Abstract

The application relates to an air filter air inlet device and a vehicle, relates to the technical field of automobiles, and can improve the combustion efficiency of an engine. The air filter air inlet device comprises a mounting frame, a first air inlet pipe and an extension pipe. The mounting frame extends along a first direction and is provided with a connecting hole extending along a second direction, the second direction being perpendicular to the first direction. The first air inlet pipe is arranged on one side of the mounting frame in the second direction and is provided with a first air inlet and a first air outlet. The first air inlet is connected with the connecting hole, and the first air outlet is located on one side of the mounting frame in a third direction, the third direction being perpendicular to the first direction and the second direction. The extension pipe is arranged on the side of the mounting frame away from the first air inlet pipe and is provided with a second air inlet and a second air outlet. The second air outlet is connected with the end of the connecting hole away from the first air inlet pipe, and the second air inlet is located on the side of the mounting frame in the third direction close to the first air outlet. The air filter air inlet device in the application is used for conveying air to an air filter.

Description

Technical Field

[0001] This application relates to the field of automotive technology, specifically to an air filter intake device and a vehicle. Background Technology

[0002] With the development of society and the economy, people's living standards have greatly improved, and their consumption levels have also gradually increased. Automobiles, as a major means of transportation, are becoming increasingly common in people's lives. The automobile engine is the heart of automotive engineering machinery, while the intake system is the artery of the engine. Its main function is to deliver clean, dry, sufficient, and stable air to the engine to meet its needs and prevent impurities and large particles of dust in the air from entering the engine combustion chamber and causing abnormal engine wear.

[0003] In related technologies, the intake system includes an air filter and an air filter intake device connected to the inlet of the air filter. However, the intake air temperature of the aforementioned air filter is relatively high, resulting in lower combustion efficiency of the car engine. Summary of the Invention

[0004] The purpose of this application is to provide an air filter intake device and vehicle that can improve engine combustion efficiency.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] On one hand, this application provides an air filter intake device, which includes a mounting bracket, a first intake pipe, and an extension pipe. The mounting bracket extends along a first direction and has a connection hole extending along a second direction, wherein the second direction is perpendicular to the first direction. The first intake pipe is disposed on one side of the mounting bracket in the second direction and has a first intake port and a first outlet port. The first intake port is connected to one end of the connection hole, and the first outlet port is located on the third-direction side of the mounting bracket and is used to connect to the inlet of the air filter. The third-direction is perpendicular to both the first and second directions. The extension pipe is disposed on the side of the mounting bracket away from the first intake pipe and has a second intake port and a second outlet port. The second outlet port is connected to the end of the connection hole away from the first intake pipe, and the second intake port is located on the third-direction side of the mounting bracket near the first outlet port.

[0007] According to the aforementioned technical means, the extension pipe extends the first air inlet of the first intake pipe to the side of the mounting bracket near the first air outlet of the first intake pipe, allowing air from the side of the mounting bracket near the first air outlet of the first intake pipe to enter the air filter through the extension pipe. It should be noted that the mounting bracket is typically located in the engine compartment, on the side of the air filter inlet furthest from the ground, to provide support for the first intake pipe. It is understood that a large amount of less dense, hot air typically accumulates in the upper part of the engine compartment, while the air temperature in the lower part is relatively lower. Therefore, the extension pipe reduces the amount of hot air from the upper part of the engine compartment entering the air filter, allowing more cool air from the lower part of the engine compartment to enter the air filter. This lowers the temperature of the air entering the engine, thereby increasing the oxygen content of the intake air, improving engine combustion efficiency, and reducing carbon emissions.

[0008] In one possible implementation, the extension pipe includes a guide pipe section and an intake pipe section. A second outlet is disposed in the guide pipe section, and the angle between the extension direction of the guide pipe section and a reference plane is an acute angle. The reference plane is perpendicular to a third direction. The intake pipe section is connected to the end of the guide pipe section away from the second outlet and extends along a third direction. A second intake port is disposed at the end of the intake pipe section away from the guide pipe section.

[0009] Based on the aforementioned technical means, on the one hand, the guide pipe section can guide the airflow, allowing air to enter the air filter more smoothly. This increases the oxygen content of the engine intake air, thereby improving engine combustion efficiency. On the other hand, the inclined guide pipe section can increase the length of the extension pipe, reducing the risk of water entering the engine through the extension pipe. This reduces the risk of engine malfunction.

[0010] In one possible implementation, the intake pipe section includes a side plate and a baffle plate. The side plate is connected to the end of the guide pipe section away from the second air outlet; the baffle plate is disposed at the end of the side plate away from the guide pipe section and is connected to the side plate. The side plate is disposed around the edge of the baffle plate. In a second direction, a second air inlet is disposed on the surface of the side plate on the side away from the first intake pipe, and the second air inlet is located at the end of the side plate near the baffle plate.

[0011] Based on the aforementioned technical means, the water deflector can block water when a car is wading through water, thereby reducing the risk of water entering the engine and thus reducing the risk of engine failure.

[0012] In one possible implementation, a first drain hole is provided on the side plate. The first drain hole is located at the end of the side plate near the baffle plate and is positioned opposite to the second air inlet.

[0013] Based on the above-mentioned technical means, the first drain hole can discharge the water that overflows the baffle plate and enters the extension pipe through the second air inlet, thereby further reducing the risk of water entering the engine and thus reducing the risk of engine failure.

[0014] In one possible implementation, a second drain hole is provided on the guide pipe section. In a second direction, the second drain hole is located on the surface of the guide pipe section on the side away from the first air intake pipe.

[0015] Based on the aforementioned technical means, on the one hand, the second drain hole can keep the first air intake pipe connected to the outside air when the water flow passes over the second air intake, so as to balance the atmospheric pressure and the air pressure in the first air intake pipe, reducing the risk of water entering the engine under the combined action of the engine intake negative pressure and atmospheric pressure. On the other hand, when the water flow energy is large, the second drain hole can discharge the higher flow of water that has rushed into the extension pipe, thereby further reducing the risk of water entering the engine.

[0016] In one possible implementation, there are multiple second drain holes, which are spaced apart along a first direction.

[0017] Based on the aforementioned technical means, multiple secondary drainage holes can improve drainage efficiency and reduce the risk of water entering the engine.

[0018] In one possible implementation, the guide pipe section includes a first sub-pipe section and a second sub-pipe section, and a second air outlet is disposed on the first sub-pipe section. The second sub-pipe section is connected to the first sub-pipe section and the intake pipe section, and the angle between the extension direction of the second sub-pipe section and the reference plane is greater than the angle between the extension direction of the first sub-pipe section and the reference plane.

[0019] Based on the aforementioned technical methods, setting up a first sub-pipe section and a second sub-pipe section can increase the length of the guide pipe section, thereby increasing the length of the extension pipe. This reduces the risk of water flowing into the engine through the extension pipe, thus lowering the risk of engine malfunction.

[0020] In one possible implementation, a second drain hole is provided in the second sub-pipe segment. In the third direction, the distance L between the second drain hole and the baffle plate satisfies the following formula:

[0021] L=(2+ν / 6)×h×sinθ-H

[0022] Where ν is the vehicle speed during the wading test, h is the water depth during the wading test, θ is the angle between the extension direction of the second sub-pipe section and the reference plane, and H is the installation height of the baffle.

[0023] Based on the above technical means, a better opening position for the second drain hole can be calculated, which is beneficial to improving the drainage effect of the second drain hole and reducing the risk of water entering the engine.

[0024] In one possible implementation, the mounting bracket has a threaded hole on the side near the extension tube, and the extension tube has a connecting plate at the end near the mounting bracket, with a clearance hole on the connecting plate. The air filter intake device also includes fasteners that pass through the threaded hole and the clearance hole and are threadedly connected to the threaded hole.

[0025] The above-mentioned technical methods can reduce the installation difficulty of extension pipes, improve the installation efficiency of extension pipes, and ensure high reliability of connections.

[0026] On the other hand, this application provides a vehicle that includes the air filter intake device described in any of the above embodiments.

[0027] Based on the above-mentioned technical means, the beneficial effects of the vehicle provided in this application are the same as the beneficial effects of the air filter intake device provided in the above-mentioned technical solution, and will not be repeated here.

[0028] Therefore, the above-mentioned technical features of this application have the following beneficial effects:

[0029] (1) The extension pipe can reduce the temperature of the air entering the engine, thereby increasing the oxygen content of the engine intake air, which in turn improves the combustion efficiency of the engine and reduces carbon emissions.

[0030] (2) The guide pipe section can, on the one hand, increase the oxygen content of the engine intake air, thereby improving the engine combustion efficiency; on the other hand, it can reduce the risk of water flowing into the engine through the extension pipe, thereby reducing the risk of engine failure.

[0031] (3) The water baffle can reduce the risk of water entering the engine, thereby reducing the risk of engine failure.

[0032] (4) The first drain hole can drain the water in the extension pipe to reduce the risk of water entering the engine.

[0033] (5) The second drain hole can reduce the risk of water entering the engine.

[0034] (6) Multiple secondary drain holes can improve the drainage effect, thereby further reducing the risk of water entering the engine.

[0035] (7) The first and second sub-pipe sections can increase the length of the extension pipe to reduce the risk of water flowing into the engine through the extension pipe.

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0037] Figure 1A structural diagram of an air filter, an air filter intake device, and a second intake pipe provided in this application;

[0038] Figure 2 A structural diagram of an extension tube provided in this application;

[0039] Figure 3 A structural diagram of an extension tube provided in this application;

[0040] Figure 4 This application provides a structural diagram of a mounting bracket and an extension tube.

[0041] Figure label:

[0042] 100-Air filter; 200-Air filter intake device; 1-Mounting bracket; 11-Threaded hole; 2-First intake pipe; 3-Extension pipe; 31-Second intake port; 32-Second outlet port; 33-Guide pipe section; 331-Second drain hole; 332-First sub-pipe section; 333-Second sub-pipe section; 34-Intake pipe section; 341-Side plate; 3411-First drain hole; 342-Water baffle; 35-Connecting plate; 351-Allowing hole; 4-Fastener; 5-Second intake pipe. Detailed Implementation

[0043] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0044] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0045] With the development of technology, the automotive industry is gradually transforming into a low-carbon emission industry. Currently, new energy vehicles, represented by electric vehicles, have become the major direction for the future development of the automotive industry. However, in the early stages of this transformation, gasoline-powered vehicles and hybrid vehicles still occupy a large market share. Therefore, technologies that reduce engine fuel consumption, improve engine combustion efficiency, and reduce carbon emissions have become highly sought after by major manufacturers.

[0046] In related technologies, methods such as reducing the size of the grille opening and moving the grille opening downwards are commonly used to reduce wind resistance in automobiles, thereby reducing fuel consumption. However, this leads to a decrease in the flow of cold air, causing the air filter intake temperature to rise, resulting in a decrease in the oxygen content of the engine intake air, which in turn reduces engine combustion efficiency and increases carbon emissions.

[0047] Based on this, this application proposes a vehicle that can improve engine combustion efficiency and reduce carbon emissions. For example... Figure 1 As shown, Figure 1 This application provides a structural diagram of an air filter, an air filter intake device, and a second intake pipe. The vehicle includes an engine and an air filter 100. The air filter 100 is mainly used to provide clean air to the engine to prevent the engine from increasing the probability of abrasion and damage due to the intake of air containing impurity particles during operation.

[0048] For example, the air filter 100 includes a filter element and a housing, with a mounting cavity inside the housing, and the filter element disposed within the mounting cavity. The filter element performs the function of filtering the gas, while the housing provides protection for the filter element.

[0049] It is understood that the air filter 100 is typically equipped with an inlet for air intake, and the inlet of the air filter 100 is usually located on the housing. The air filter 100 may have only one inlet or multiple inlets, depending on the specific circumstances; this disclosure does not impose any specific limitations. For example, the air filter 100 may have two inlets.

[0050] In addition, the vehicle also includes an air filter intake device 200, which includes a mounting bracket 1, a first intake pipe 2, and an extension pipe 3.

[0051] The mounting bracket 1 extends along a first direction X and has a connecting hole extending along a second direction Y, which is perpendicular to the first direction Z. A first air inlet pipe 2 is located on one side of the mounting bracket 1 in the second direction Y and has a first air inlet and a first air outlet. The first air inlet is connected to one end of the connecting hole, and the first air outlet is located on one side of the mounting bracket 1 in the third direction Z, and is used to connect to the inlet of the air filter 100, which is perpendicular to both the first direction X and the second direction Y.

[0052] In other words, one end of the first intake pipe 2 is connected to the connection hole on the mounting bracket 1, and the other end is connected to the inlet of the air filter. In this way, air can enter the first intake pipe 2 through the connection hole and flow into the air filter through the first intake pipe 2. The mounting bracket 1 provides support for the first intake pipe 2, making its installation more secure.

[0053] Based on this, see Figure 2 , Figure 2 This application provides a structural diagram of an extension tube. The extension tube 3 is disposed on the side of the mounting bracket 1 away from the first air inlet pipe 2, and has a second air inlet 31 and a second air outlet 32. The second air outlet 32 ​​is connected to the end of the connecting hole away from the first air inlet pipe 2, and the second air inlet 31 is located on the side of the mounting bracket 1 in the third direction Z, closer to the first air outlet.

[0054] In this configuration, the extension tube 3 extends the first air inlet of the first air inlet pipe 2 to the side of the mounting bracket 1 near the first air outlet of the first air inlet pipe 2, so that the air on the side of the mounting bracket 1 near the first air outlet of the first air inlet pipe 2 can enter the air filter 100 through the extension tube 3.

[0055] Understandably, the mounting bracket 1 is typically located inside the engine compartment, on the side of the air filter 100 that is furthest from the ground from the inlet. A large amount of hot, less dense air usually accumulates in the upper part of the engine compartment, while the air temperature in the lower part is relatively lower. Therefore, the extension pipe 3 reduces the amount of hot air from the upper part of the engine compartment entering the air filter 100, allowing more cool air from the lower part of the engine compartment to enter the air filter 100. This lowers the temperature of the air entering the engine, thereby increasing the oxygen content of the engine intake air, improving engine combustion efficiency, and reducing carbon emissions.

[0056] In some embodiments, such as Figure 2 As shown, the extension pipe 3 includes a guide pipe section 33 and an intake pipe section 34. A second outlet 32 ​​is located on the guide pipe section 33, and the angle between the extension direction of the guide pipe section 33 and the reference plane is acute. The reference plane is perpendicular to the third direction. The intake pipe section 34 is connected to the end of the guide pipe section 33 away from the second outlet 32 ​​and extends along the third direction Z. A second intake port 31 is located on the end of the intake pipe section 34 away from the guide pipe section 33.

[0057] In this configuration, the guide pipe section 33 can be inclined relative to the intake pipe section 34, meaning that the extension direction of the extension pipe 3 is bent. This serves two purposes: firstly, the guide pipe section 33 can guide the airflow, allowing air to enter the air filter 100 more smoothly, thereby increasing the oxygen content of the engine intake air and thus improving engine combustion efficiency. Secondly, it also increases the length of the extension pipe 3, reducing the risk of water entering the engine through the extension pipe 3, thereby reducing the risk of engine malfunction.

[0058] It is understood that the guide pipe section 33 and the intake pipe section 34 can be integrally formed, or they can be two independent components connected into a whole by welding or other methods. The specific choice can be made according to the actual situation, and this disclosure does not impose any specific limitations on this.

[0059] For example, such as Figure 2 As shown, the guide pipe section 33 and the air intake pipe section 34 are integrally formed. This helps to improve the structural strength of the extension pipe 3, improve the airtightness of the extension pipe 3, and reduce the risk of air leakage in the extension pipe 3.

[0060] Among them, such as Figure 3 As shown, Figure 3 This application provides a structural diagram of an extension pipe. The air inlet section 34 may include a side plate 341 and a baffle plate 342. The side plate 341 is connected to the end of the guide pipe section 33 away from the second air outlet 32; the baffle plate 342 is disposed at the end of the side plate 341 away from the guide pipe section 33 and is connected to the side plate 341. The side plate 341 is disposed around the edge of the baffle plate 342.

[0061] For example, the side plate 341 and the baffle plate 342 are integrally formed, which helps to improve the structural strength of the extension pipe 3, reduce the risk of deformation or damage to the extension pipe 3, and thus extend the service life of the extension pipe 3.

[0062] Based on this, see Figure 1 In the second direction Y, the second air inlet 31 is disposed on the surface of the side plate 341 away from the first air inlet pipe 2, and the second air inlet 31 is located at the end of the side plate 341 near the water baffle 342.

[0063] With this configuration, when the vehicle is wading through water, the water deflector 342 can block the water, reducing the risk of water flowing into the extension pipe 3, thereby reducing the risk of water entering the engine through the extension pipe 3, and thus reducing the risk of engine failure.

[0064] Among them, such as Figure 3 As shown, a first drain hole 3411 can also be provided on the side plate 341. The first drain hole 3411 is located at one end of the side plate 341 near the baffle plate 342 and is opposite to the second air intake 31. That is, the first drain hole 3411 and the second air intake 31 are respectively located on opposite sides of the side plate 341. In this way, when the vehicle is wading through deep water, and water overflows the baffle plate 342 and flows into the extension pipe 3 through the second air intake 31, the first drain hole 3411 can drain the water flowing into the extension pipe 3, thereby reducing the risk of water entering the engine and reducing the risk of engine failure.

[0065] It is understood that the number of first drainage holes 3411 can be one or more, and the specific number can be selected according to the actual situation. This disclosure does not make any specific limitation on this.

[0066] It should be noted that, as Figure 3As shown, a second drain hole 331 can also be provided on the guide pipe section 33. In the second direction Y, the second drain hole 331 is located on the guide pipe section 33 away from the first air inlet pipe 2 (e.g., Figure 1 On the surface of one side of the extension pipe 3 (as shown). That is, the second drain hole 331 and the second air inlet 31 are located on the same side of the extension pipe 3.

[0067] In this way, when the vehicle is wading through deep water and the water flow exceeds the second air intake 31, the second drain hole 331 can keep the first air intake pipe 2 connected to the outside air, so as to balance the atmospheric pressure and the air pressure in the first air intake pipe 2, and reduce the risk of water entering the engine under the dual action of the engine intake negative pressure and atmospheric pressure.

[0068] In addition, the second drain hole 331 can also discharge a higher flow of water into the extension pipe 3 when the water flow energy is large, thereby further reducing the risk of water entering the engine and reducing the risk of engine failure.

[0069] The number of second drainage holes 331 can be multiple or one, depending on the actual situation. This disclosure does not impose any specific restrictions on this.

[0070] For example, such as Figure 3 As shown, there are multiple second drain holes 331, and these multiple second drain holes 331 are spaced apart along the first direction X. This helps to improve the drainage effect, thereby further reducing the risk of water entering the engine. For example, there are two second drain holes 331.

[0071] It should be noted that the guide pipe section 33 may include a first sub-pipe section 332 and a second sub-pipe section 333, and the second air outlet 32 ​​is disposed in the first sub-pipe section 332. The second sub-pipe section 333 is connected to the first sub-pipe section 332 and the air intake pipe section 34. That is to say, the guide pipe section 33 includes a first sub-pipe section 332 and a second sub-pipe section 333 that are connected to each other, and the second sub-pipe section 333 is connected between the first sub-pipe section 332 and the air intake pipe section 34.

[0072] Among them, such as Figure 2 As shown, the angle θ between the extension direction of the second sub-pipe segment 333 and the reference plane is greater than the angle α between the extension direction of the first sub-pipe segment 332 and the reference plane.

[0073] In this configuration, the first sub-pipe segment 332 can be tilted relative to the second sub-pipe segment 333. At this point, the extension pipe 3 has bends at the junction of the intake pipe and the second sub-pipe segment 333, and also at the junction of the second sub-pipe segment 333 and the second sub-pipe segment 333. This further increases the length of the extension pipe 3, reducing the risk of water entering the engine through the extension pipe 3, thereby reducing the risk of engine malfunction. Simultaneously, it allows for a smoother transition in the extension pipe 3, enabling smoother airflow within it.

[0074] In this case, the second drain hole 331 can be located in the second sub-pipe segment 333. Then, in the third direction Z, the distance L between the second drain hole 331 and the baffle plate 342 satisfies the following formula:

[0075] L=(2+ν / 6)×h×sinθ-H

[0076] Where ν is the vehicle speed during the wading test, h is the water depth during the wading test, θ is the angle between the extension direction of the second sub-pipe section 333 and the reference plane, and H is the installation height of the baffle plate 342.

[0077] It should be noted that the installation height of the water deflector 342 refers to the distance between the water deflector 342 and the ground after the air filter intake device 200 is installed on the vehicle.

[0078] The above formula can be used to calculate a better opening position for the second drain hole 331, which is beneficial to improving the drainage effect of the second drain hole 331 and reducing the risk of water entering the engine.

[0079] In some embodiments, such as Figure 4 As shown, Figure 4 This application provides a structural diagram of a mounting bracket and an extension tube. The mounting bracket 1 has a threaded hole 11 on the side near the extension tube 3. See also... Figure 3 The extension tube 3 has a connecting plate 35 at one end near the mounting bracket 1, and the connecting plate 35 has a clearance hole 351. The air filter intake device 200 also includes fasteners 4 (such as... Figure 2 As shown, the fastener 4 passes through the threaded hole 11 and the clearance hole 351, and is threadedly connected to the threaded hole 11. The fastener 4 can be a bolt or a screw.

[0080] This design is simple in structure and easy to implement, which helps to reduce the installation difficulty of the extension tube 3, thereby improving the installation efficiency of the extension tube 3. Furthermore, it can improve the reliability of the connection and reduce the risk of the extension tube 3 falling off.

[0081] For example, such as Figure 4As shown, the mounting bracket 1 has two threaded holes 11 on the side near the extension tube 3, with the two threaded holes 11 respectively located on opposite sides of the connecting hole. The extension tube 3 has two connecting plates 35 (e.g., ...) on the end near the mounting bracket 1. Figure 3 As shown, two connecting plates 35 are respectively disposed on opposite sides of the extension tube 3, and each connecting plate 35 corresponds to a threaded hole 11. In this case, the air filter intake device 200 includes two fasteners 4, each fastener 4 corresponding to a threaded hole 11, and is threadedly connected to the corresponding threaded hole 11.

[0082] A sealing ring can also be installed at the connection between the extension tube 3 and the mounting bracket 1 to reduce the risk of air leakage at the connection between the extension tube 3 and the mounting bracket 1.

[0083] It is understood that the connection method between the first air intake pipe 2 and the mounting bracket 1 can refer to the connection method between the extension pipe 3 and the mounting bracket 1, and will not be described in detail here.

[0084] It should be noted that, as Figure 1 As shown, the vehicle may also include a second air intake pipe 5, in which case the air filter 100 includes multiple inlets, and the second air intake pipe 5 and the first air intake pipe 2 are respectively connected to different inlets of the air filter 100.

[0085] The above embodiments are merely preferred embodiments provided to fully illustrate this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.

Claims

1. An air filter intake device (200), characterized in that, include: Mounting bracket (1) extends along a first direction; the mounting bracket (1) is provided with a connecting hole, the connecting hole extends along a second direction, the second direction being perpendicular to the first direction; A first air inlet pipe (2) is disposed on one side of the mounting bracket (1) in the second direction and has a first air inlet and a first air outlet; the first air inlet is connected to one end of the connecting hole, the first air outlet is located on one side of the mounting bracket (1) in the third direction, and the first air outlet is used to connect to the inlet of the air filter (100); the third direction is perpendicular to the first direction and the second direction; An extension tube (3) is disposed on the side of the mounting bracket (1) away from the first air inlet pipe (2) and has a second air inlet (31) and a second air outlet (32); the second air outlet (32) is connected to the end of the connecting hole away from the first air inlet pipe (2); the second air inlet (31) is located on the side of the mounting bracket (1) away from the first air outlet in the third direction; The extension tube (3) includes: A guide pipe section (33) is provided, and the second air outlet (32) is provided on the guide pipe section (33); the angle between the extension direction of the guide pipe section (33) and the reference plane is an acute angle, and the reference plane is perpendicular to the third direction; An intake pipe section (34) is connected to the end of the guide pipe section (33) away from the second air outlet (32) and extends along the third direction; the second air inlet (31) is located at the end of the intake pipe section (34) away from the guide pipe section (33); The guide pipe section (33) includes: The first sub-pipe section (332) and the second air outlet (32) are located in the first sub-pipe section (332); The second sub-pipe section (333) is connected to the first sub-pipe section (332) and the intake pipe section (34); the angle between the extension direction of the second sub-pipe section (333) and the reference surface is greater than the angle between the extension direction of the first sub-pipe section (332) and the reference surface.

2. The air filter intake device (200) according to claim 1, characterized in that, The intake pipe section (34) includes: The side plate (341) is connected to the end of the guide pipe section (33) away from the second air outlet (32); A baffle plate (342) is disposed at one end of the side plate (341) away from the guide pipe section (33) and is connected to the side plate (341); the side plate (341) is disposed around the edge of the baffle plate (342); In the second direction, the second air inlet (31) is disposed on the surface of the side plate (341) away from the first air inlet pipe (2), and the second air inlet (31) is located at the end of the side plate (341) near the water baffle (342).

3. The air filter intake device (200) according to claim 2, characterized in that, The side plate (341) is provided with a first drain hole (3411); the first drain hole (3411) is located at one end of the side plate (341) near the water baffle (342) and is opposite to the second air inlet (31).

4. The air filter intake device (200) according to claim 2 or 3, characterized in that, The guide pipe section (33) is provided with a second drain hole (331); in the second direction, the second drain hole (331) is disposed on the surface of the guide pipe section (33) away from the first air inlet pipe (2).

5. The air filter intake device (200) according to claim 4, characterized in that, The number of the second drain holes (331) is multiple, and the multiple second drain holes (331) are spaced apart along the first direction.

6. The air filter intake device (200) according to claim 4, characterized in that, The second drain hole (331) is provided in the second sub-pipe section (333). In the third direction, the distance L between the second drain hole (331) and the baffle plate (342) satisfies the following formula: L = (2 + ν / 6) × h × sinθ - H Where ν is the vehicle speed during the wading test, h is the water depth during the wading test, θ is the angle between the extension direction of the second sub-pipe section (333) and the reference surface, and H is the installation height of the baffle plate (342).

7. The air filter intake device (200) according to claim 1, characterized in that, The mounting bracket (1) has a threaded hole (11) on the side near the extension tube (3), and a connecting plate (35) is provided at one end of the extension tube (3) near the mounting bracket (1). The connecting plate (35) has a clearance hole (351). The air filter intake device (200) also includes: Fastener (4) is inserted into the threaded hole (11) and the clearance hole (351) and is threadedly connected to the threaded hole (11).

8. A vehicle, characterized in that, The air filter intake device (200) includes any one of claims 1 to 7.

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