Silencer cooling device, silencing device and vehicle

Abstract

The invention discloses a silencer cooling device, a silencing device and a vehicle. The silencer cooling device comprises an air inlet pipe, the air inlet pipe can be connected with a silencer, and the air inlet pipe is used for introducing air flow around a vehicle in the driving process of the vehicle and conveying the air flow to the silencer for cooling. According to the silencer, air flow around a vehicle in the vehicle running process can be introduced into the silencer, the silencer is cooled through the air flow, the flow speed of the air flow is high, and the tail gas cooling effect of the silencer is remarkably improved.

Description

Technical Field

[0001] This invention relates generally to the field of muffler technology, and more specifically to a muffler cooling device, a muffler device, and a vehicle. Background Technology

[0002] The engine is a crucial power component in a car, and the exhaust tailpipe, as part of the engine's exhaust system, is primarily used to discharge the high-temperature exhaust gases produced by the engine. The exhaust tailpipe is equipped with a muffler to eliminate noise during exhaust emissions. Because the exhaust gases are quite hot, the surface of the muffler remains at a high temperature, which can easily pose a risk of heat damage to surrounding components.

[0003] Therefore, there is a need to provide a muffler cooling device, a muffler device, and a vehicle to at least partially solve the above-mentioned problems. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above-mentioned problems, a first aspect of the present invention provides a muffler cooling device, comprising:

[0006] An air intake pipe is provided, which can be connected to a muffler. The air intake pipe is used to introduce airflow around the vehicle during vehicle operation and deliver it to the muffler for cooling.

[0007] Optionally, the air intake pipe is located on the vehicle's front hood to introduce airflow to the front of the vehicle during driving.

[0008] Optionally, the air intake pipe is disposed on the vehicle's air intake grille to introduce airflow at the front of the vehicle during vehicle operation.

[0009] Optionally, the air intake pipe includes:

[0010] The pipe opening faces forward of the vehicle;

[0011] A dustproof net is installed at the pipe opening to prevent debris from entering the pipe opening.

[0012] Optionally, the muffler cooling device further includes:

[0013] A first connecting pipe, the first end of which is connected to the air intake pipe, and the second end of which is connected to the muffler, for conveying airflow.

[0014] Optionally, the first connecting tube includes a flexible hose.

[0015] A second aspect of the present invention provides a silencing device, including a silencing cooling device according to any one of the above-described technical solutions;

[0016] A muffler connected to the air intake pipe.

[0017] Optionally, the muffler further includes:

[0018] An inner shell, wherein an inner cavity is provided in the inner shell, the inner cavity being used for the flow of exhaust gas;

[0019] An outer casing, which is disposed around the inner casing;

[0020] An airflow channel is provided between the outer shell and the inner shell, and the airflow channel is used to circulate airflow.

[0021] Optionally, the muffler further includes:

[0022] An air inlet is provided on the first or fourth side of the housing and connected to the air flow channel. The air inlet is used to deliver airflow to the air flow channel.

[0023] Optionally, the muffler further includes:

[0024] A filter screen is disposed at the air inlet to prevent debris from entering the airflow channel.

[0025] Optionally, the muffler further includes:

[0026] An exhaust gas inlet is provided on the second side of the inner shell and connected to the inner cavity, for delivering exhaust gas flow into the inner cavity;

[0027] An exhaust port is provided on the third side of the inner shell and connected to the inner cavity, for outputting exhaust gas flow from the inner cavity.

[0028] Optionally, the muffler further includes:

[0029] A mixed-gas exhaust port is provided on the third side of the housing and connected to the air flow channel. The exhaust gas exhaust port extends into the mixed-gas exhaust port and is used to mix the exhaust gas flow and the air flow and output them.

[0030] Optionally, the muffler further includes:

[0031] A guide vane is disposed in the airflow channel and connected to the inner shell. The guide vane extends from the air inlet to the mixed air outlet to guide the airflow and dissipate heat from the inner shell.

[0032] Optionally, the muffler further includes:

[0033] A heat insulation layer, wherein the heat insulation layer is disposed around the outer shell;

[0034] A heat insulation cover, which is disposed around the heat insulation layer.

[0035] A third aspect of the present invention provides a vehicle comprising a muffler cooling device or a muffler device as described in any of the above-described technical solutions.

[0036] Optionally, the vehicle also includes:

[0037] An engine, located in the front or rear compartment of the vehicle, wherein the exhaust pipe of the engine is connected to the muffler via a second connecting pipe.

[0038] Optionally, the muffler is located in the front or rear compartment of the vehicle and is connected to the air intake pipe of the muffler cooling device via a first connecting pipe.

[0039] According to a muffler cooling device, a muffler device, and a vehicle of the present invention, the muffler cooling device can introduce airflow from around the vehicle during vehicle operation into the muffler, and use the airflow to cool the muffler. The airflow has a relatively fast flow rate, which more effectively reduces the surface temperature of the muffler, significantly improves the cooling effect of the muffler on exhaust gas, and extends the service life of the muffler. Attached Figure Description

[0040] The following drawings, which illustrate embodiments of the present invention, are included as part of this invention for understanding its principles. The drawings depict embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0041] Figure 1 This is a schematic diagram of the structure of a noise reduction device according to a preferred embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of a noise reduction device according to a preferred embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of an air intake pipe according to a preferred embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of a flexible hose according to a preferred embodiment of the present invention;

[0045] Figure 5 This is a cross-sectional view of a muffler according to a preferred embodiment of the present invention;

[0046] Figure 6 This is a top view of a muffler according to a preferred embodiment of the present invention;

[0047] Figure 7 This is a front view of a muffler according to a preferred embodiment of the present invention;

[0048] Figure 8 for Figure 7 A cross-sectional view along the middle EE.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1: Vehicle hood 2: Air intake pipe

[0051] 201: Pipe opening; 202: Dustproof netting

[0052] 3: First connecting pipe 301: Flexible hose

[0053] 4: Engine 5: Muffler

[0054] 501: Air intake 502: Filter

[0055] 503: Heat insulation cover; 504: Heat insulation layer

[0056] 505: Outer casing; 506: Airflow channel

[0057] 507: Inner shell; 508: Mixed air exhaust port

[0058] 509: Exhaust port; 510: Exhaust intake port

[0059] 511: Inner cavity; 512: Flow guide plate

[0060] 6: Second connecting pipe; 7: Vehicle air intake grille Detailed Implementation

[0061] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0062] To fully understand the present invention, a detailed description will be set forth in the following description. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. Obviously, the implementation of embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below; however, in addition to these detailed descriptions, the present invention may have other embodiments.

[0063] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0064] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used in this invention are for illustrative purposes only and are not intended to be limiting.

[0065] This invention discloses a muffler cooling device, a muffler device, and a vehicle.

[0066] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0067] like Figure 1 , Figure 2 As shown, in a preferred embodiment, a muffler cooling device includes: an air intake pipe 2, which is adapted to transport airflow.

[0068] The air intake pipe 2 is located at the front or side of the vehicle. The air intake pipe 2 can be connected to the muffler 5. The air intake pipe 2 is used to introduce the airflow around the vehicle during vehicle operation and deliver it to the muffler 5 for cooling.

[0069] During vehicle operation, airflow will flow close to the front or side of the vehicle body. The higher the vehicle speed, the faster the airflow, and the higher the efficiency of cooling the muffler 5 when introduced by the air intake pipe 2.

[0070] The muffler cooling device in this embodiment can introduce airflow from around the vehicle during vehicle operation into the muffler, using this airflow to cool the muffler. The airflow is relatively fast, which more effectively reduces the surface temperature of the muffler, significantly improving the muffler's cooling effect on exhaust gases and extending the service life of the muffler.

[0071] In one implementation, such as Figure 1 , Figure 2As shown, the air intake pipe 2 is installed on the vehicle's front hood 1 to introduce airflow to the front of the vehicle during driving. The specific position of the air intake pipe 2 on the vehicle's front hood 1 is set according to actual needs. The vehicle's front hood 1 can be provided with an installation port corresponding to the air intake pipe 2. The air intake pipe 2 is installed and fixed in the installation port and extends upward from the vehicle's front hood 1 to a predetermined height to facilitate the introduction of airflow.

[0072] In one implementation, such as Figure 1 , Figure 2 As shown, the air intake pipe 2 is installed on the vehicle's air intake grille 7 to introduce airflow to the front of the vehicle during driving. The specific position of the air intake pipe 2 on the vehicle's air intake grille 7 is set according to actual needs. The vehicle's air intake grille 7 can be provided with an installation port corresponding to the air intake pipe 2. The air intake pipe 2 is installed and fixed in the installation port and extends forward from the vehicle's air intake grille 7 by a predetermined length to facilitate the introduction of airflow.

[0073] like Figure 1 , Figure 2 As shown, the vehicle can have air intake pipes 2 installed on both the vehicle hood 1 and the vehicle air intake grille 7. However, it is also possible to install air intake pipes 2 in only one of the locations, such as only on the vehicle hood 1 or only on the vehicle air intake grille 7.

[0074] In one implementation, such as Figure 3 As shown, the air intake pipe 2 includes:

[0075] Pipe 201 faces the front of the vehicle, which facilitates the introduction of airflow;

[0076] Dustproof net 202 is installed at pipe opening 201 to prevent debris from entering pipe opening 201. It can prevent dust, fluff, flying insects, leaves and other debris from entering pipe opening 201 and causing blockage, ensuring the unobstructed air intake pipe 2, and also preventing them from entering the silencer 5 and causing high temperature fire.

[0077] The opening 201 can be set to a suitable shape such as round, oval, or rectangular, and the shape of the dustproof net 202 is adapted to the opening 201.

[0078] In one implementation, such as Figure 1 , Figure 2 As shown, the muffler cooling device also includes:

[0079] The first connecting pipe 3 has its first end connected to the air intake pipe 2 and its second end connected to the air intake port 501 of the muffler 5 for conveying airflow.

[0080] The vehicle's engine 4 is usually located at the front, while the muffler 5 is usually located at the rear of the vehicle. The air intake pipe 2 and the muffler 5 are separated by a considerable distance. The air intake pipe 2 and the muffler 5 can be connected by a first connecting pipe 3 to form an airflow channel. At this time, the length of the first connecting pipe 3 is relatively long to adapt to the installation environment outside the vehicle.

[0081] Of course, there are also vehicles with the muffler 5 positioned at the front. In this case, the air intake pipe 2 and the muffler 5 are relatively close together. The first connecting pipe 3 can be used to connect the air intake pipe 2 and the muffler 5. In this case, the length of the first connecting pipe 3 is relatively short to adapt to the installation environment inside the vehicle.

[0082] In one implementation, such as Figure 4 As shown, the first connecting pipe 3 includes a flexible hose 301. The flexible hose 301 can be a high-temperature resistant rubber hose or a flexible metal corrugated pipe, which can be bent according to the installation environment inside the vehicle to facilitate connection between the air intake pipe 2 and the muffler 5.

[0083] like Figure 1 , Figure 2 As shown, an embodiment of the present invention also provides a muffler device, including a muffler cooling device and a muffler 5 as described in any of the above embodiments, wherein the muffler 5 is connected to an air intake pipe 2.

[0084] The muffler in this embodiment can use a muffler cooling device to introduce airflow from around the vehicle during vehicle operation into the muffler. This airflow is used to cool the muffler. The airflow is relatively fast, which more effectively reduces the surface temperature of the muffler, significantly improves the cooling effect of the muffler on exhaust gas, and extends the service life of the muffler.

[0085] In one implementation, such as Figure 5 As shown, the muffler 5 includes: an inner shell 507, an outer shell 505, and an airflow channel 506;

[0086] The inner shell 507 is located in the middle of the muffler 5. The inner shell 507 has an inner cavity 511, which is used to circulate exhaust gas airflow. The inner cavity 511 is the main structure for eliminating exhaust gas noise.

[0087] The outer shell 505 is arranged around the inner shell 507, and the outer shell 505 is larger than the inner shell 507;

[0088] An airflow channel 506 is disposed between the outer shell 505 and the inner shell 507, and the airflow channel 506 is used to circulate airflow.

[0089] The airflow exchanges heat with the inner shell 507 in the airflow channel 506, which can carry away the heat of the inner shell 507 and thus cool down the exhaust airflow in the inner shell 507. That is, the airflow and the exhaust airflow exchange heat. At the same time, the airflow reduces the overall temperature of the muffler 5, effectively avoiding the risk of heat damage to surrounding components from the muffler 5.

[0090] By introducing airflow generated around the vehicle during vehicle operation, such as front or side airflow, into the airflow channel 506, the muffler 5 is cooled by this airflow. The airflow is faster and more effectively reduces the surface temperature of the muffler 5, significantly improving the cooling effect of the muffler 5 on the exhaust gas and extending the service life of the muffler 5.

[0091] The inner cavity 511 can be equipped with components such as ducts and baffles. The exhaust gas flow is guided by the ducts and baffles, and the sound waves emitted are adjusted or reduced, thereby eliminating the noise of the exhaust gas flow.

[0092] Before entering the muffler 5, the exhaust gas typically needs to be purified in a three-way catalytic converter to render it harmless. For details, please refer to existing technologies. Alternatively, the muffler 5 can be configured to purify the exhaust gas simultaneously, for example, by incorporating a purifying agent within it to both purify the exhaust gas and reduce noise.

[0093] In one implementation, such as Figure 5 As shown, the muffler 5 also includes:

[0094] An air inlet 501 is located on the first or fourth side of the housing 505 and connected to the airflow channel 506. The air inlet 501 is used to supply airflow to the airflow channel 506. In the figure, the first side of the housing 505 is the top side, and the fourth side is the left side. The air inlet 501 can be set to a suitable shape such as circular, elliptical, or rectangular, and the cross-sectional area is designed according to the actual air intake requirements.

[0095] In one implementation, such as Figure 5 , Figure 6 As shown, the muffler 5 also includes:

[0096] The filter 502 is located at the air inlet 501 and is used to prevent debris from entering the airflow channel 506. Debris entering the muffler 5 may cause blockage, high temperature and fire risks.

[0097] Filter 502 is the second layer of filtration, while the dust filter 202 of the air intake pipe 2 is the first layer of filtration. Filter 502 can further improve the purity of the airflow and also plays a role in airflow circulation, which can evenly distribute the airflow to the airflow channel 506. The shape of filter 502 is adapted to the air intake 501.

[0098] In one implementation, such as Figure 5 , Figure 7 As shown, the muffler 5 also includes:

[0099] The exhaust gas inlet 510 is located on the second side of the inner shell 507 and connected to the inner cavity 511, and is used to deliver exhaust gas flow into the inner cavity 511; the second side of the inner shell 507 in the figure is the right side.

[0100] The exhaust port 509 is located on the third side of the inner shell 507 and connected to the inner cavity 511. It is used to output exhaust gas flow from the inner cavity 511. The third side of the inner shell 507 in the figure is the lower side.

[0101] The exhaust gas inlet 510 is connected to the engine 4 through the second connecting pipe 6. When the engine 4 is running, the exhaust gas flow is transported to the inner cavity 511 through the second connecting pipe 6. After cooling and noise reduction, the exhaust gas is discharged from the inner cavity 511 through the exhaust gas outlet 509.

[0102] In one implementation, such as Figure 1 , Figure 2 As shown, the silencing device also includes:

[0103] The second connecting pipe 6 has its first end connected to the exhaust gas inlet 510 of the muffler 5, and its second end connected to the exhaust pipe of the engine 4, typically the exhaust manifold of the engine 4. The second connecting pipe 6 can be made of metal to facilitate the transport of high-temperature exhaust gas.

[0104] In one implementation, such as Figure 5 , Figure 7 As shown, the muffler 5 also includes:

[0105] A mixed-gas exhaust port 508 is located on the third side of the housing 505 and connected to an airflow channel 506. An exhaust port 509 extends into the mixed-gas exhaust port 508. The mixed-gas exhaust port 508 is used to mix and output the exhaust gas flow and the airflow. In the figure, the third side of the housing 505 is the lower side.

[0106] The airflow and exhaust gas flow mix in the mixed exhaust port 508 and are then discharged into the atmosphere, which can reduce the concentration of the exhaust gas flow, reduce the pollution of the exhaust gas flow to the environment, and further reduce the temperature of the exhaust gas flow before it exits the muffler 5.

[0107] Regarding exhaust gas temperature: Since the exhaust gas emitted by the engine during operation is high-temperature gas, the specific temperature is related to the engine displacement and whether it has a turbocharger. When the engine with a displacement of 1.5L and above is running at full power, the exhaust temperature at the exhaust manifold outlet is generally greater than 700℃. After the conventional exhaust system dissipates heat, the airflow temperature at the exhaust outlet is still very high.

[0108] In one implementation, such as Figure 8 As shown, the muffler 5 also includes:

[0109] A guide vane 512 is disposed in the air flow channel 506 and connected to the inner shell 507. The guide vane 512 extends from the air inlet 501 to the mixed air outlet 508 to guide the air flow and dissipate heat for the inner shell 507.

[0110] Multiple guide vanes 512 are provided in the airflow channel 506. The guide vanes 512 also act as heat dissipation fins of the inner shell 507, increasing the heat dissipation area of ​​the inner shell 507 and accelerating the cooling speed of the inner shell 507 by the airflow.

[0111] In one implementation, such as Figure 5 , Figure 8 As shown, the muffler 5 also includes:

[0112] Thermal insulation layer 504 is disposed around the outer shell 505;

[0113] Heat insulation cover 503 is arranged around heat insulation layer 504.

[0114] The heat insulation layer 504 can be made of materials with different thermal conductivity according to actual needs, such as heat insulation cotton, glass fiber, aerogel, etc., to effectively isolate the heat of the muffler 5 from being conducted outward, and to prevent the muffler 5 from causing heat damage to other components.

[0115] The heat insulation cover 503 is made of metal and serves to protect the heat insulation layer 504, preventing damage to the heat insulation layer 504 and thus heat insulation failure. The heat insulation cover 503 must meet the corresponding strength requirements to avoid deformation that would reduce the heat insulation effect of the heat insulation layer 504.

[0116] The air inlet 501, the exhaust gas inlet 510, and the mixed gas exhaust outlet 508 all need to penetrate the heat insulation layer 504 and the heat insulation cover 503 to achieve internal and external communication.

[0117] Embodiments of the present invention also provide a vehicle including the muffler cooling device or the muffler device described in any of the above embodiments.

[0118] The vehicle includes an engine 4, which can be a gasoline engine or a diesel engine. The engine 4 provides power for the vehicle to move. The vehicle can be a fuel vehicle or a hybrid vehicle.

[0119] In one embodiment, the engine 4 is located in the front or rear compartment of the vehicle, and the exhaust pipe of the engine 4 is connected to the muffler 5 through the second connecting pipe 6. The exhaust gas generated when the engine 4 is working is delivered to the muffler 5 through the second connecting pipe 6.

[0120] In one embodiment, the muffler 5 is located in the front or rear compartment of the vehicle and is connected to the air intake pipe 2 of the muffler cooling device via a first connecting pipe 3.

[0121] The muffler 5 can be installed close to the engine 4 and integrated with the engine 4, which facilitates installation and layout in the vehicle, and the second connecting pipe 6 used is shorter.

[0122] Of course, a non-integrated solution can also be adopted, with the muffler 5 located away from the engine 4. For example, the engine 4 is located in the front compartment of the vehicle, and the muffler 5 is located near the rear of the vehicle.

[0123] The present invention provides a muffler cooling device, a muffler device, and a vehicle, which have the following characteristics:

[0124] (1) This invention can be applied to exhaust systems integrated in the front or rear compartment of a vehicle, or to exhaust systems that are not integrated.

[0125] (2) The present invention reduces the surface temperature of components such as exhaust system mufflers or exhaust system pipes more effectively. In particular, the cooling effect on exhaust system components is more obvious when the car is running at high power and high speed. Compared with the existing technical solutions, the present invention reduces the surface temperature of exhaust system mufflers or pipes more uniformly and has higher feasibility in exhaust systems.

[0126] (3) The present invention has high adaptability to the exhaust system layout and the air intake position is flexible and can be adjusted according to factors such as actual vehicle shape or layout space.

[0127] (4) This invention does not require the introduction of an independent air source, does not require an increase in vehicle power consumption, and effectively utilizes the relatively low temperature airflow during vehicle operation.

[0128] (5) The present invention can reduce the surface temperature of components such as exhaust system mufflers and extend the service life of exhaust system mufflers;

[0129] (6) Since the exhaust temperature is high when the vehicle is running at high speed, the higher the temperature of the existing exhaust system heat insulation layer, the greater the thermal conductivity, and the worse the heat insulation effect on the surface of components such as the exhaust system muffler. The present invention can continuously remove the high temperature of the surface of components such as the exhaust system muffler when the vehicle is running at high power, and fully exchange heat with the surface of the system such as the muffler, and initially cool down the exhaust temperature radiated to the heat insulation layer. This can ensure that the thermal conductivity of the heat insulation layer will not increase at high temperature, thereby causing the heat insulation performance of the heat insulation layer to decrease, and thus avoiding the risk of heat damage to other components from the exhaust system.

[0130] (7) The present invention can design a flow guide groove and add heat dissipation fins on the outer shell of the muffler to more effectively reduce the temperature of the exhaust surface;

[0131] (8) The present invention mixes the air flow with the exhaust gas flow in the exhaust muffler at the exhaust outlet, which can effectively and stably reduce the temperature of the exhaust gas flow before it is discharged from the exhaust pipe, and reduce the risk of thermal damage to other components from the exhaust gas flow.

[0132] (9) The present invention can reduce the temperature of the exhaust gas flow in advance and can disperse the exhaust gas flow before it is discharged into the air, which can effectively reduce the white fog phenomenon formed at the exhaust gas flow outlet in northern winter.

[0133] Regarding the white fog phenomenon at the exhaust outlet: Because the exhaust gas contains water vapor, and the outdoor ambient temperature is low in northern winters, the exhaust gas containing high-temperature water vapor will produce a white fog phenomenon (water vapor pre-cooling and liquefaction) when it is discharged from the exhaust outlet. This invention can effectively reduce the concentration of white fog in the exhaust gas by reducing the temperature of the exhaust gas in the air.

[0134] (10) This invention is applicable to various fuel vehicles such as gasoline and diesel, and is applicable to traditional fuel vehicles, hybrid vehicles, etc., with a wide range of applicable models.

[0135] The processes and steps described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order than those described above. The order of steps in the above process can also be added, combined, or deleted according to actual needs.

[0136] In understanding the scope of this invention, the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that specify the presence of the described features, elements, components, groups, integrals, and / or steps, but do not exclude the presence of other undescribed features, elements, components, groups, integrals, and / or steps. This concept also applies to words with similar meanings, such as the terms "comprising," "having," and their derivatives.

[0137] The term "attached" or "joined" as used herein includes: a construction in which one element is directly fixed to another element by fixing it directly to another element; a construction in which one element is indirectly fixed to another element by fixing it to an intermediate member, which in turn is fixed to another element; and a construction in which one element is integral with another element, that is, one element is substantially part of another element. This definition also applies to words with similar meanings, such as "connect," "joint," "couple," "install," "adhere," "fix," and their derivatives. Finally, degree terms such as "substantially," "approximately," and "approximately" as used herein indicate the amount of deviation from which modifications to the terminology do not significantly alter the final result.

[0138] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0139] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will understand that the present invention is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of the present invention, all of which fall within the scope of protection claimed by the present invention.

Claims

1. A muffler cooling device, characterized in that, include: An air intake pipe (2) is provided, which can be connected to a muffler (5). The air intake pipe (2) is used to introduce the airflow around the vehicle during vehicle operation and deliver it to the muffler (5) for cooling.

2. The muffler cooling device according to claim 1, characterized in that, The air intake pipe (2) is installed on the front hood (1) of the vehicle and is used to introduce airflow at the front of the vehicle during vehicle operation.

3. The muffler cooling device according to claim 1, characterized in that, The air intake pipe (2) is installed on the vehicle's air intake grille (7) and is used to introduce airflow at the front of the vehicle during vehicle operation.

4. The muffler cooling device according to claim 1, characterized in that, The air intake pipe (2) includes: The pipe opening (201) faces the front of the vehicle; A dustproof net (202) is provided at the pipe opening (201) to prevent debris from entering the pipe opening (201).

5. The muffler cooling device according to claim 1, characterized in that, Also includes: A first connecting pipe (3) is connected at its first end to the air intake pipe (2) and at its second end to the muffler (5) for conveying airflow.

6. The muffler cooling device according to claim 5, characterized in that, The first connecting tube (3) includes a flexible hose (301).

7. A noise reduction device, characterized in that, include: The muffler cooling device according to any one of claims 1-6; A muffler (5) is connected to the air intake pipe (2).

8. The silencing device according to claim 7, characterized in that, The silencer (5) includes: The inner shell (507) has an inner cavity (511) therein, and the inner cavity (511) is used to circulate exhaust gas flow. A housing (505) is disposed around the inner housing (507); An airflow channel (506) is provided between the outer shell (505) and the inner shell (507) for circulating airflow.

9. The silencing device according to claim 8, characterized in that, The silencer (5) also includes: An air inlet (501) is provided on the first or fourth side of the housing (505) and connected to the air flow channel (506). The air inlet (501) is used to deliver air flow to the air flow channel (506).

10. The silencing device according to claim 9, characterized in that, The silencer (5) also includes: A filter screen (502) is disposed at the air inlet (501) to prevent debris from entering the airflow channel (506).

11. The silencing device according to claim 9, characterized in that, The silencer (5) also includes: Exhaust gas inlet (510), the exhaust gas inlet (510) is disposed on the second side of the inner shell (507) and connected to the inner cavity (511), for conveying exhaust gas flow to the inner cavity (511); Exhaust port (509) is provided on the third side of the inner shell (507) and connected to the inner cavity (511) for outputting exhaust gas flow from the inner cavity (511).

12. The silencing device according to claim 11, characterized in that, The silencer (5) also includes: A mixed-gas exhaust port (508) is provided on the third side of the housing (505) and connected to the air flow channel (506). The exhaust port (509) extends into the mixed-gas exhaust port (508). The mixed-gas exhaust port (508) is used to mix and output the exhaust gas flow and the air flow.

13. The silencing device according to claim 12, characterized in that, The silencer (5) also includes: A guide vane (512) is disposed in the airflow channel (506) and connected to the inner shell (507). The guide vane (512) extends from the air inlet (501) to the mixed air outlet (508) to guide the airflow and dissipate heat for the inner shell (507).

14. The silencing device according to claim 8, characterized in that, The silencer (5) also includes: A heat insulation layer (504) is disposed around the outer shell (505); A heat shield (503) is disposed around the heat insulation layer (504).

15. A vehicle, characterized in that, Includes the muffler cooling device according to any one of claims 1-6 or the muffler device according to any one of claims 7-14.

16. The vehicle according to claim 15, characterized in that, Also includes: An engine (4) is located in the front or rear compartment of the vehicle, and the exhaust pipe of the engine (4) is connected to the muffler (5) via a second connecting pipe (6).

17. The vehicle according to claim 15, characterized in that, The muffler (5) is installed in the front or rear compartment of the vehicle and is connected to the air intake pipe (2) of the muffler cooling device via the first connecting pipe (3).

Images