Water-gas separation device, silencer assembly and vehicle

Abstract

The utility model discloses a water-gas separation device, muffler assembly and vehicle, water-gas separation device includes intake passage, exhaust passage, drainage passage, the outlet of intake passage is communicated with the inlet of exhaust passage and the inlet of drainage passage, exhaust passage and intake passage form first included angle, the exhaust passage is communicated with the outlet of drainage passage, exhaust passage and intake passage form first included angle, and the exhaust passage is communicated with the outlet of drainage passage. A second included angle is formed between the drainage channel and the air inlet channel, the first included angle is smaller than the second included angle, and the outlet sectional area of the drainage channel is smaller than the outlet sectional area of the exhaust channel. According to the water-gas separation device, separation between liquid water and gas is achieved, high separation efficiency is achieved, the separated liquid water can be subjected to other treatment or directly discharged out of a vehicle, and therefore the icing problem is avoided, and particularly continuous and normal operation of a fuel cell vehicle type can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and in particular to a water-gas separation device, a muffler assembly and a vehicle. Background Art

[0002] As the requirements for automobile emission pollutants become increasingly stringent, fuel cell vehicles have gradually become the focus of development in the industry due to their "zero emission" characteristics. One difference between fuel cells and traditional fuel vehicles is that the exhaust temperature of traditional fuel vehicles is above 300 degrees Celsius, and the water in the combustion products is mostly discharged in gaseous form. However, the exhaust temperature of fuel cell vehicles is usually below 100 degrees Celsius, and the combustion products are mainly a mixture of liquid water and gases such as hydrogen. In some cold areas, if the liquid water cannot be discharged from the vehicle in time, it will cause the corresponding pipelines to freeze and clog, affecting the normal operation of the vehicle. Therefore, how to separate the liquid water in the mixture and discharge it outside the vehicle has become one of the main problems in the design of fuel cell vehicles. Utility Model Content

[0003] In view of this, the utility model aims to provide a water-gas separation device, a muffler assembly and a vehicle to solve at least one of the technical problems in the prior art that liquid water in the combustion products of fuel cell vehicles is difficult to separate and discharge, easily causes freezing problems, and affects the normal operation of the vehicle.

[0004] The utility model provides a water-gas separation device, comprising an air intake channel, an exhaust channel, and a drainage channel, wherein the outlet of the air intake channel is connected to the inlet of the exhaust channel and the inlet of the drainage channel, the exhaust channel and the air intake channel form a first angle, the drainage channel and the air intake channel form a second angle, the first angle is smaller than the second angle, and the outlet cross-sectional area of ​​the drainage channel is smaller than the outlet cross-sectional area of ​​the exhaust channel.

[0005] Further, the air intake channel extends along a first straight line, and the air exhaust channel and the drainage channel are located on the same side of the first straight line.

[0006] Furthermore, a first drainage hole is opened on the bottom wall of the drainage channel to form an outlet of the drainage channel.

[0007] Furthermore, a first exhaust hole is provided at the end of the exhaust channel to form an outlet of the exhaust channel.

[0008] Furthermore, the ratio of the outlet cross-sectional area of ​​the drainage channel to the outlet cross-sectional area of ​​the exhaust channel is 1:800-1200.

[0009] Furthermore, the first angle is an acute angle, and the second angle is an obtuse angle.

[0010] The utility model also provides a muffler assembly, comprising a muffler device and the water-gas separation device, wherein the outlet of the exhaust passage is communicated with the muffler device.

[0011] Furthermore, the silencer device includes: a first silencer chamber, the inlet of the first silencer chamber is connected to the outlet of the exhaust channel, and the cross-sectional area of ​​the first silencer chamber is larger than the outlet of the exhaust channel to form an expansion chamber structure; a second silencer chamber, an inner core tube is provided through the second silencer chamber, and the openings at both ends of the inner core tube form the inlet and outlet of the second silencer chamber, and the outlet of the first silencer chamber is connected to the inlet of the second silencer chamber.

[0012] Furthermore, it also includes a storage chamber, which is connected to the outlet of the drainage channel, a second drainage hole is opened on the bottom wall of the storage chamber, a third drainage hole is opened on the bottom wall of the second muffler chamber, a first through hole is provided between the storage chamber and the first muffler chamber, and a second through hole is provided between the first muffler chamber and the second muffler chamber.

[0013] The utility model also provides a vehicle, comprising the muffler assembly.

[0014] In the water-gas separation device of the utility model, a mixture of liquid water and gases such as hydrogen enters from the intake channel. Since the outlet cross-sectional area of ​​the drainage channel is smaller than the outlet cross-sectional area of ​​the exhaust channel, the pressure in the drainage channel is greater than the pressure in the exhaust channel, and the resulting pressure difference will act on the mixture. The liquid water in the mixture is heavier than the gas, and is less affected by the pressure difference, and its movement direction will change slightly. The gas is more affected by the pressure difference, and its movement direction will change significantly. Because the first angle between the intake channel and the exhaust channel is smaller than the second angle between the intake channel and the drainage channel, most of the gas whose movement direction has changed significantly will enter the exhaust channel, and most of the liquid water whose movement direction has changed slightly will enter the drainage channel, thereby realizing the separation between liquid water and gas, and having a high separation efficiency. The separated liquid water can be subjected to other treatments or directly discharged outside the vehicle, thereby avoiding the problem of icing, and in particular ensuring the continuous normal operation of fuel cell vehicles.

[0015] The muffler assembly and vehicle of the present invention have all the beneficial effects of the above-mentioned water-gas separation device, which will not be described in detail here.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is one of the schematic diagrams of the muffler assembly provided by the utility model;

[0019] Figure 2 This is the second schematic diagram of the muffler assembly provided by the utility model;

[0020] Figure 3 yes Figure 2 A schematic cross-sectional view of the muffler assembly along plane Ⅰ;

[0021] Figure 4 yes Figure 2 Schematic diagram of the cross section of the muffler assembly along plane II.

[0022] The above drawings include the following reference numerals:

[0023] 1. Intake channel; 2. Exhaust channel; 21. Exhaust hole; 3. Drainage channel; 31. Drainage hole; 4. First muffler chamber; 5. Second muffler chamber; 51. Inner core tube; 52. Third drain hole; 6. Storage chamber; 61. Second drain hole; 7. First through hole; 8. Second through hole. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0025] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the utility model will occur to those skilled in the art.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] The utility model provides a water-gas separation device, comprising an air intake channel 1, an exhaust channel 2, and a drainage channel 3, wherein the outlet of the air intake channel 1 is connected to the inlet of the exhaust channel 2 and the inlet of the drainage channel 3, the exhaust channel 2 and the air intake channel 1 form a first angle, the drainage channel 3 and the air intake channel 1 form a second angle, the first angle is smaller than the second angle, and the outlet cross-sectional area of ​​the drainage channel 3 is smaller than the outlet cross-sectional area of ​​the exhaust channel 2.

[0028] Combination Figures 1 to 3 As shown, a plurality of outer plates may be provided on the periphery of the water-gas separation device, and the plurality of outer plates are connected to form a cavity structure to accommodate and protect the water-gas separation device, wherein the inlet of the air intake channel 1 passes through the outer plate and extends outside the cavity structure to facilitate connection with the corresponding structure, thereby introducing a mixture containing liquid water and hydrogen, etc., and the mixture may enter the exhaust channel 2 and the drainage channel 3. However, since the outlet cross-sectional area of ​​the drainage channel 3 is smaller than the outlet cross-sectional area of ​​the exhaust channel 2, the pressure of the drainage channel 3 is greater than the pressure of the exhaust channel 2. At the same time, since the first angle between the exhaust channel 2 and the air intake channel 1 is smaller than the second angle between the drainage channel 3 and the air intake channel 1, most of the gas in the mixture changes its movement direction to a large extent under the action of the pressure difference and enters the exhaust channel 2. However, since the liquid water in the mixture is heavier than the gas due to its own weight, it is difficult to change its movement direction due to the pressure difference. Therefore, most of the liquid water will move almost along the original movement direction or change its movement direction slightly and enter the drainage channel 3.

[0029] Combination Figure 3As shown, the intake channel 1 extends along the straight line AA in the figure (i.e., the first straight line described later), the exhaust channel 2 near the inlet extends along the straight line BB in the figure, and the drainage channel 3 extends along the straight line CC in the figure. The angle between the straight line AA and the straight line BB is the first angle α between the intake channel 1 and the exhaust channel 2, and the angle between the straight line AA and the straight line CC is the second angle β between the intake channel 1 and the drainage channel 3, and from Figure 3 It can be seen from the figure that the air intake channel 1 extends along a first straight line (ie, straight line AA), and the exhaust channel 2 and the drainage channel 3 are located on the same side of the first straight line (ie, straight line AA).

[0030] It is understandable that the exhaust channel 2 and the drainage channel 3 can also be located on both sides of the first straight line (i.e., straight line AA) along the intake channel 1, but obviously when the exhaust channel 2 and the drainage channel 3 are located on the same side of the first straight line, the occupied space of the water-gas separation device can be minimized. In actual applications, the exhaust channel 2 and the drainage channel 3 are located on the same side or on both sides of the first straight line. These two implementation schemes can be selected as needed.

[0031] Specifically, combined Figure 3 and Figure 4 As shown, a first drainage hole 31 is opened on the bottom wall of the drainage channel 3 to form an outlet of the drainage channel 3, wherein the first drainage hole 31 is exemplified as a circular through-hole structure, so that liquid water condenses and falls in the drainage channel 3, and flows out from the first drainage hole 31 under the action of gravity, which is conducive to discharging the condensed liquid water out of the vehicle.

[0032] In addition, combined Figure 1 and Figure 3 As shown, a first exhaust hole 21 is provided at the end of the exhaust channel 2 to form an outlet of the exhaust channel 2, wherein the first exhaust hole 21 is exemplified as a square through-hole structure, and the exhaust channel 2 extends from the outlet of the intake channel 1 around the first drain hole 31 to form an arc-shaped path, so that the first exhaust hole 21 can finally be connected to the silencer.

[0033] Generally speaking, the specific path of the exhaust channel 2 can prevent the exhaust channel 2 from occupying too much space. However, it is understandable that the specific extension path of the exhaust channel 2 can be designed according to actual conditions, as long as it does not affect other components. For example, the exhaust channel 2 can be bent multiple times from the outlet of the intake channel 1 (the bending angle can be designed according to actual conditions), and finally the first exhaust hole 21 is extended to communicate with the muffler; or, the exhaust channel 2 extends from the outlet of the intake channel 1 along a spatial curve or a plane curve of any path, so that the first exhaust hole 21 is connected with the muffler.

[0034] Furthermore, the ratio of the outlet cross-sectional area of ​​the drainage channel 3 to the outlet cross-sectional area of ​​the exhaust channel 2 is 1:800-1200.

[0035] Combination Figure 1 and Figure 3 As shown, the cross-sectional area of ​​the first drainage hole 31 of the circular through-hole structure is much smaller than the cross-sectional area of ​​the first exhaust hole 21 of the square through-hole structure. In practical applications, in order to ensure that most of the gas separated from the liquid water can smoothly enter the exhaust channel 2, the ratio (i.e., the ratio of the cross-sectional area of ​​the first drainage hole 31 to the cross-sectional area of ​​the first exhaust hole 21 in this embodiment) is preferably in the range of 1:800 to 1200. Within this ratio range, the pressure difference can more effectively act on most of the gas after the liquid water is separated, causing it to change its direction of movement and enter the exhaust channel 2, thereby improving the efficiency of water-gas separation.

[0036] Furthermore, the first angle is an acute angle, and the second angle is an obtuse angle.

[0037] Combination Figure 3 As shown, a first angle α is formed between the air intake channel 1 and the exhaust channel 2, and α=30 degrees is exemplified, and a second angle β is formed between the air intake channel 1 and the drainage channel 3, and β=120 degrees is exemplified. In this way, the first angle α is smaller than the second angle β. At the same time, it can be ensured as much as possible that liquid water can smoothly enter the drainage channel 3, and the gas after separation of the liquid water can smoothly deflect the direction of movement and enter the exhaust channel 2, thereby improving the efficiency of water-gas separation.

[0038] In the water-gas separation device of the utility model, a mixture of liquid water and gases such as hydrogen enters from the intake channel 1. Since the outlet cross-sectional area of ​​the drainage channel 3 is smaller than the outlet cross-sectional area of ​​the exhaust channel 2, the pressure in the drainage channel 3 is greater than the pressure in the exhaust channel 2, and the resulting pressure difference will act on the mixture. The liquid water in the mixture is heavier than the gas, and the liquid water is less affected by the pressure difference, and its movement direction will change slightly. The gas is more affected by the pressure difference, and its movement direction will change significantly. Because the first angle between the intake channel 1 and the exhaust channel 2 is smaller than the second angle between the intake channel 1 and the drainage channel 3, most of the gas whose movement direction changes significantly will enter the exhaust channel 2, and most of the liquid water whose movement direction changes slightly will enter the drainage channel 3, thereby realizing the separation between liquid water and gas, and having a high separation efficiency. The separated liquid water can be processed in other ways or directly discharged outside the vehicle, thereby avoiding the problem of icing, and in particular, ensuring the continuous normal operation of the fuel cell vehicle model.

[0039] The utility model also provides a muffler assembly, combined with Figures 1 to 4As shown, it includes a silencer device and the water-gas separation device, and the outlet of the exhaust passage 2 is connected to the silencer device.

[0040] The silencer in this embodiment can refer to the silencers in other vehicle models to reduce the noise during the vehicle exhaust process.

[0041] Specifically, the silencer device includes: a first silencer chamber 4, the inlet of the first silencer chamber 4 is connected to the outlet of the exhaust channel 2, and the cross-sectional area of ​​the first silencer chamber 4 is larger than the outlet of the exhaust channel 2 to form an expansion chamber structure; a second silencer chamber 5, an inner core tube 51 is penetrated by the second silencer chamber 5, and the openings at both ends of the inner core tube 51 form the inlet and outlet of the second silencer chamber 5, and the outlet of the first silencer chamber 4 is connected to the inlet of the second silencer chamber 5.

[0042] Combination Figure 1 and Figure 3 As shown, the outlet of the exhaust channel 2 is the exhaust hole 21, and the first muffler chamber 4 is a cavity structure formed by connecting a plurality of outer plates. A mounting port matching the exhaust hole 21 is opened in one of the outer plates as the entrance of the first muffler chamber 4, so that the gas after most of the liquid water is separated enters the first muffler chamber 4. The cross-sectional area of ​​the first muffler chamber 4 is larger than the cross-sectional area of ​​the exhaust hole 21, so that when the gas enters the first muffler chamber 4 from the exhaust channel 2, the cross-sectional area suddenly increases, forming an expansion cavity structure of the muffler device, which plays a certain muffler role; combined with Figure 1 , Figure 3 and Figure 4 As shown, the inner core tube 51 is provided with a through hole for gas to pass through, and the second muffler chamber 5 is usually also provided with some muffler materials to improve the muffler effect. The gas enters the inner core tube 51 and the second muffler chamber 5 from one end opening of the inner core tube 51, and then is discharged from the other end opening of the inner core tube 51, and is discharged outside the vehicle through subsequent pipelines.

[0043] Combination Figure 4 As shown, it also includes a storage chamber 6, which is connected to the outlet of the drainage channel 3, a second drainage hole 61 is opened on the bottom wall of the storage chamber 6, a third drainage hole 52 is opened on the bottom wall of the second muffler chamber 5, a first through hole 7 is provided between the storage chamber 6 and the first muffler chamber 4, and a second through hole 8 is provided between the first muffler chamber 4 and the second muffler chamber 5.

[0044] Liquid water will condense and fall in both the water-gas separation device and the silencer device. In the water-gas separation device, the condensed liquid water enters the storage chamber 6 through the first drain hole 31. Under normal circumstances, the liquid water in the storage chamber 6 can be discharged to the outside of the vehicle through the second drain hole 61; similarly, under normal circumstances, the condensed liquid water in the second silencer chamber 5 can be directly discharged to the outside of the vehicle through the third drain hole 52 on the bottom wall; the liquid water condensed in the first silencer chamber 4 can flow to the storage chamber 6 and the second silencer chamber 5 through the first through hole 7 and the second through hole 8, and then be discharged to the outside of the vehicle through the second drain hole 61 and the third drain hole 52; in particular, when the vehicle accelerates or decelerates or travels on a slope, the condensed liquid water in the storage chamber 6, the first silencer chamber 4 and the second silencer chamber 5 can all flow through the first through hole 7 and the second through hole 8, and then be discharged to the outside of the vehicle through the second drain hole 61 and / or the third drain hole 52, thereby ensuring that the liquid water can be discharged to the outside of the vehicle as soon as possible to avoid ice problems.

[0045] In the muffler assembly of the utility model, a mixture of liquid water and gases such as hydrogen enters from the intake channel 1. Since the outlet cross-sectional area of ​​the drainage channel 3 is smaller than the outlet cross-sectional area of ​​the exhaust channel 2, the pressure in the drainage channel 3 is greater than the pressure in the exhaust channel 2. The resulting pressure difference will act on the mixture. The liquid water in the mixture is heavier than the gas, and the liquid water is less affected by the pressure difference, and its movement direction will change slightly. The gas is more affected by the pressure difference, and its movement direction will change significantly. In addition, because the first angle between the intake channel 1 and the exhaust channel 2 is smaller than the second angle between the intake channel 1 and the drainage channel 3, most of the gas whose movement direction changes significantly will enter the exhaust channel 2, and most of the liquid water whose movement direction changes slightly will enter the drainage channel 3, thereby achieving separation between liquid water and gas, and having a higher separation efficiency. The separated gas is subjected to the silencing treatment of the silencing device to reduce the exhaust noise. The separated liquid water can be treated in other ways or directly discharged outside the vehicle, thereby avoiding the problem of icing, and in particular, ensuring the continuous normal operation of the fuel cell vehicle model.

[0046] The utility model also provides a vehicle, comprising the muffler assembly.

[0047] The vehicle in the utility model adopts a muffler assembly including a muffler device and a water-gas separation device. A mixture of liquid water and gases such as hydrogen enters from the intake passage 1. Since the outlet cross-sectional area of ​​the drainage passage 3 is smaller than the outlet cross-sectional area of ​​the exhaust passage 2, the pressure in the drainage passage 3 is greater than the pressure in the exhaust passage 2. The resulting pressure difference will act on the mixture. The liquid water in the mixture is heavier than the gas. The liquid water is less affected by the pressure difference, and its movement direction will change slightly. The gas is more affected by the pressure difference, and its movement direction will change significantly. In addition, because the intake The first angle between channel 1 and exhaust channel 2 is smaller than the second angle between intake channel 1 and drainage channel 3, that is, most of the gas whose movement direction changes significantly will enter exhaust channel 2, and most of the liquid water whose movement direction changes slightly will enter drainage channel 3, thereby realizing the separation between liquid water and gas with high separation efficiency. The separated gas is subjected to silencing treatment by the silencing device to reduce exhaust noise, and the separated liquid water can be subjected to other treatments or directly discharged out of the vehicle, thereby avoiding the problem of icing, especially ensuring the continuous normal operation of fuel cell vehicles.

[0048] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0050] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0051] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0052] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water-gas separation device, characterized in that: It includes an intake channel, an exhaust channel, and a drainage channel. The outlet of the intake channel is connected to the inlet of the exhaust channel and the inlet of the drainage channel. There is a first angle between the exhaust channel and the intake channel, and there is a second angle between the drainage channel and the intake channel. The first angle is smaller than the second angle, and the outlet cross-sectional area of ​​the drainage channel is smaller than the outlet cross-sectional area of ​​the exhaust channel.

2. The water-gas separation device according to claim 1, characterized in that: The intake passage extends along a first straight line, and the exhaust passage and the drain passage are located on the same side of the first straight line.

3. The water-gas separation device according to claim 2, characterized in that: A first drainage hole is provided on the bottom wall of the drainage channel to form an outlet of the drainage channel.

4. The water-gas separation device according to claim 2, characterized in that: A first exhaust hole is disposed at the end of the exhaust passage to form an outlet of the exhaust passage.

5. The water-gas separation device according to claim 1, characterized in that: The ratio of the outlet cross-sectional area of ​​the drainage channel to the outlet cross-sectional area of ​​the exhaust channel is 1:800-1200.

6. The water-gas separation device according to claim 1, characterized in that: The first angle is an acute angle, and the second angle is an obtuse angle.

7. A muffler assembly, characterized in that: It comprises a silencer and the water-gas separation device according to any one of claims 1 to 6, wherein the outlet of the exhaust passage is connected to the silencer.

8. The muffler assembly according to claim 7, characterized in that: The muffler device comprises: a first muffler chamber, wherein an inlet of the first muffler chamber is connected to an outlet of the exhaust passage, and a cross-sectional area of ​​the first muffler chamber is larger than that of the outlet of the exhaust passage, so as to form an expansion chamber structure; The second muffler chamber has an inner core tube running through it, and openings at both ends of the inner core tube form an inlet and an outlet of the second muffler chamber, and the outlet of the first muffler chamber is connected to the inlet of the second muffler chamber.

9. The muffler assembly according to claim 8, characterized in that: It also includes a storage chamber, which is connected to the outlet of the drainage channel, a second drainage hole is opened on the bottom wall of the storage chamber, a third drainage hole is opened on the bottom wall of the second muffler chamber, a first through hole is provided between the storage chamber and the first muffler chamber, and a second through hole is provided between the first muffler chamber and the second muffler chamber.

10. A vehicle, characterized in that: A muffler assembly comprising any one of claims 7 to 9.

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