CN217522067U - Tail row silencing device and vehicle with same - Google Patents

Abstract

The utility model discloses a silencing device is arranged to tail and vehicle that has it, silencing device is arranged to the tail includes: the air pipeline is sleeved with a silencer; the dilution structure is provided with an air inlet, a hydrogen inlet and an exhaust port, the air inlet is communicated with the inlet end of the air pipeline, the hydrogen inlet is communicated with the anode side of the fuel cell system, the exhaust port is communicated with the outlet end of the air pipeline, the dilution structure is connected with the silencer, the dilution structure comprises a mixing chamber and a reaction chamber which are sequentially communicated along the gas flow direction, the air inlet and the hydrogen inlet are both arranged at the front end of the mixing chamber, the exhaust port is arranged at the rear end of the reaction chamber, the outlet of the mixing chamber is communicated with the inlet of the reaction chamber, and at least one of the mixing chamber and the reaction chamber is connected with the silencer. The utility model discloses a silencing device is arranged to tail can realize the tail and arrange weakening of noise, reduce the hydrogen concentration in the tail row, and is convenient for save the overall arrangement space, does benefit to the miniaturized design that realizes silencing device is arranged to the tail.

Description

Tail row silencing device and vehicle with same

Technical Field

The utility model belongs to the technical field of fuel cell tail row system technique and specifically relates to a silencing device is arranged to tail and vehicle that has it is related to.

Background

In the tail gas exhaust system of the fuel cell, the tail gas is mixed with hydrogen gas of which the anode is not completely reacted, and in the tail gas exhaust process, if the concentration of the hydrogen gas in the tail gas exhaust is not reduced, the concentration of the hydrogen gas in the tail gas exhaust is too high, and the requirement of the safe exhaust concentration of the tail gas exhaust cannot be met, so that a hydrogen diluting device needs to be arranged to reduce the concentration of the hydrogen gas in the tail gas exhaust.

For solving above-mentioned problem, in prior art's scheme, hydrogen diluting device adopts large-traffic air to dilute tail row's hydrogen more, but under the system idle speed or do not adopt hydrogen cyclic utilization's the condition, the hydrogen concentration of tail discharge port department is great, also can't guarantee hydrogen concentration in safe emission concentration range after diluting, and tail row's muffler arranges for alone with hydrogen diluting device, not only increased the overall arrangement space, lead to its overall dimension great, and the connection between the two is comparatively complicated, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a silencing device is arranged to tail, this silencing device is arranged to tail's dilution structure and the integrated setting of muffler to be convenient for save overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes silencing device is arranged to the tail.

According to the utility model discloses tail silencing device, include: the air pipeline is externally sleeved with a silencer; the dilution structure is provided with an air inlet, a hydrogen inlet and an exhaust port, the air inlet is communicated with the inlet end of the air pipeline, the hydrogen inlet is communicated with the anode side of the fuel cell system, the exhaust port is communicated with the outlet end of the air pipeline, the dilution structure is connected with the silencer, the dilution structure comprises a mixing chamber and a reaction chamber which are sequentially communicated along the gas flow direction, the air inlet and the hydrogen inlet are arranged at the front end of the mixing chamber, the exhaust port is arranged at the rear end of the reaction chamber, the outlet of the mixing chamber is communicated with the inlet of the reaction chamber, and at least one of the mixing chamber and the reaction chamber is connected with the silencer.

According to the utility model discloses tail silencing device is arranged, through set up the muffler on the air line, so that realize weakening of tail noise, and dilute the structure and can dilute the hydrogen in the tail, be convenient for reduce the hydrogen concentration in the tail, so that the hydrogen concentration in the tail accords with safe emission concentration scope, and simultaneously, dilute the structure and link to each other with the muffler, in order to dilute structure and the integrated setting of muffler, thereby be convenient for save layout space, make its structure compacter, do benefit to the miniaturized design that realizes tail silencing device.

According to the utility model discloses some embodiments's tail is arranged silencing device still includes: a connector for connecting the dilution arrangement with the muffler.

According to the utility model discloses tail silencing device of some embodiments, the connecting piece structure is the clamp and includes fixed first ring portion and the second ring portion that links to each other, first ring portion cover is located outside the diluting structure, second ring portion cover is located outside the muffler.

According to the utility model discloses some embodiments's tail is arranged silencing device, the connecting piece is a plurality of, and a plurality of the connecting piece is followed the length direction of muffler distributes in proper order.

According to the utility model discloses tail silencing device of some embodiments, the connecting piece is two and one the connecting piece be used for with the mixing chamber with the muffler links to each other, another the connecting piece be used for with the reaction chamber with the muffler links to each other.

According to the utility model discloses tail silencing device of some embodiments, air inlet with be equipped with the governing valve between the entry end of air pipeline.

According to the utility model discloses tail row silencing device of some embodiments, the periphery wall of mixing chamber with the periphery wall of reacting chamber respectively with the periphery wall of muffler is integrated as an organic whole.

According to some embodiments of the present invention, the mixing chamber and the reaction chamber are each independently configured as a cylinder.

According to the utility model discloses silencing device is arranged to tail, metal catalyst has in the reacting chamber, metal catalyst be suitable for with mixing chamber exhaust mist contacts and takes place catalytic reaction.

The utility model also provides a vehicle.

According to the utility model discloses a vehicle, including any one of the above-mentioned embodiment tail row silencing device.

The vehicle and the tail muffler device have the same advantages compared with the prior art, and are not described in detail herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a tail silencer according to an embodiment of the present invention.

Reference numerals:

the tail-end sound-deadening device 100,

an air line 10, an inlet end 11, an outlet end 12,

the muffler (20) is provided with a muffler,

a dilution arrangement 30, a hydrogen inlet 31, a mixing chamber 32, a reaction chamber 33,

a regulator valve 34, an air inlet 35, an exhaust 36,

a connecting piece 40, a first ring part 41 and a second ring part 42.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Additionally, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

A tail silencer 100 according to an embodiment of the present invention is described below with reference to fig. 1.

According to the utility model discloses tail row silencing device 100, include: an air line 10 and a dilution arrangement 30.

As shown in fig. 1, a muffler 20 is externally fitted to the air pipe 10, the dilution structure 30 has an air inlet 35, a hydrogen inlet 31, and an exhaust port, the air inlet 35 communicates with the inlet end 11 of the air pipe 10, the hydrogen inlet 31 communicates with the anode side of the fuel cell system, the exhaust port communicates with the outlet end 12 of the air pipe 10, and the dilution structure 30 is connected to the muffler 20.

Specifically, as shown in fig. 1, one end (left end in fig. 1) of the air pipeline 10 is an inlet end 11, and the other end (right end in fig. 1) of the air pipeline 10 is an outlet end 12, and external air is suitable to enter through the inlet end 11 and be discharged from the outlet end 12, wherein the dotted line in fig. 1 represents the gas flow direction.

Further, the hydrogen inlet 31 is communicated with the anode side of the fuel cell system, that is, the hydrogen inlet 31 is communicated with a nitrogen discharge and drainage valve at the anode side of the stack, so that the hydrogen generated at the anode side of the stack is discharged through the nitrogen discharge and drainage valve and then enters the dilution structure 30 along the hydrogen inlet 31, one end (left end in fig. 1) of the dilution structure 30 is provided with an air inlet 35, the air inlet 35 is communicated with the inlet end 11, and the other end (right end in fig. 1) of the dilution structure 30 is provided with an exhaust port 36, and the exhaust port is communicated with the outlet end 12.

In the actual exhaust process of the tail gas, the tail gas mixed with hydrogen enters the dilution structure 30 through the hydrogen inlet 31, and the tail gas is suitable for being consumed in the dilution structure 30 through reaction so as to reduce the hydrogen concentration in the tail gas, and then the reacted tail gas enters the outlet end 12 through the exhaust port so as to be mixed with the outside air again, so as to further reduce the hydrogen concentration in the tail gas, and then the tail gas is exhausted through the outlet end 12.

Therefore, the hydrogen in the tail row can be diluted for multiple times by arranging the diluting structure 30, so that the hydrogen concentration in the tail row is convenient to reduce, and the hydrogen concentration in the tail row conforms to the safe emission concentration range.

Meanwhile, the silencer 20 is sleeved outside the air pipeline 10, so that the noise can be weakened in the exhaust emission process.

The dilution structure 30 is connected to the muffler 20, in other words, the dilution structure 30 and the muffler 20 may be indirectly connected through a connection structure, or the dilution structure 30 and the muffler 20 may be directly connected, which is not limited herein.

From this, through linking to each other diluting structure 30 and muffler 20 to diluting structure 30 and the integrated setting of muffler 20, comparing the setting mode that tail row muffler 20 and hydrogen diluting device arranged alone among the prior art, do benefit to and save overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes tail row muffler device 100.

As shown in fig. 1, the dilution structure 30 includes a mixing chamber 32 and a reaction chamber 33 which are sequentially communicated with each other in a gas flow direction.

The air inlet 35 and the hydrogen inlet 31 are both provided at the front end of the mixing chamber 32, the exhaust port is provided at the rear end of the reaction chamber 33, the outlet of the mixing chamber 32 communicates with the inlet of the reaction chamber 33, and at least one of the mixing chamber 32 and the reaction chamber 33 is connected to the muffler 20.

Therefore, during the exhaust process of the exhaust gas, hydrogen generated at the anode side of the stack enters the mixing chamber 32 through the hydrogen inlet 31, an appropriate amount of external air enters the mixing chamber 32 through the inlet end 11 and the air inlet 35 in sequence to be mixed with the hydrogen, then the hydrogen mixed with the air enters the reaction chamber 33 through the outlet of the mixing chamber 32 and the inlet of the reaction chamber 33 in sequence, and undergoes a catalytic reaction in the reaction chamber 33 to consume the hydrogen so as to reduce the hydrogen concentration in the exhaust gas, and then the reacted exhaust gas enters the outlet end 12 through the exhaust port to be mixed with the air in the outlet end 12 of the air pipeline 10.

It should be noted that the flow rate of the air in the outlet end 12 of the air line 10 is large, so that the exhaust gas can be diluted again, and the diluted exhaust gas is discharged through the outlet end 12.

Thus, by providing the mixing chamber 32 and the reaction chamber 33, the hydrogen concentration at the tail gas outlet can still be reduced to make the hydrogen concentration in the tail gas outlet meet a safe emission concentration range when the system is idling or hydrogen recycling is not employed.

At least one of the mixing chamber 32 and the reaction chamber 33 is connected to the silencer 20, that is, the mixing chamber 32 is connected to the silencer 20, or the reaction chamber 33 is connected to the silencer 20, or both the mixing chamber 32 and the reaction chamber 33 are connected to the silencer 20, wherein the connection manner may be a direct welding connection, an adhesive connection, or a connection via a connecting member 40, which is not limited herein.

According to the utility model discloses tail silencing device 100 is arranged, through set up muffler 20 on air pipeline 10, so as to realize the weakening of tail noise, and dilute structure 30 and can dilute the hydrogen in the tail, be convenient for reduce the hydrogen concentration in the tail, so that the hydrogen concentration in the tail accords with safe emission concentration scope, and simultaneously, dilute structure 30 and muffler 20 and link to each other, so as to dilute structure 30 and muffler 20 integrated setting, so as to save the overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes tail silencing device 100.

In some embodiments, as shown in fig. 1, the tail silencer device 100 further includes: a connecting member 40.

The connector 40 is used to connect the dilution structure 30 to the muffler 20. From this, dilute structure 30 and be connected as overall structure through connecting piece 40 and muffler 20 to be convenient for realize diluting the integrated setting of structure 30 and muffler 20, do benefit to and save overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes tail exhaust silencing device 100.

Further, as shown in fig. 1, the connecting member 40 is configured as a clip and includes a first ring portion 41 and a second ring portion 42.

The first ring part 41 and the second ring part 42 are fixedly connected, and the first ring part 41 and the second ring part 42 are of an integrally formed structure. The first ring portion 41 is sleeved outside the dilution structure 30, and the second ring portion 42 is sleeved outside the muffler 20.

That is to say, the connecting element 40 is sleeved and connected with the diluting structure 30, and the connecting element 40 is sleeved and connected with the muffler 20, so as to simplify the connecting structure between the diluting structure 30 and the muffler 20, and reduce the difficulty of connecting the diluting structure 30 and the muffler 20, meanwhile, the first ring portion 41 is sleeved outside the diluting structure 30 so as to enhance the stability of connecting the connecting element 40 and the diluting structure 30, and the second ring portion 42 is sleeved outside the muffler 20 so as to enhance the stability of connecting the connecting element 40 and the muffler 20,

in some embodiments, the connecting member 40 is provided in a plurality, and the plurality of connecting members 40 are sequentially distributed along the length direction of the muffler 20.

For example, there are 2 connecting members 40, or there are 3 connecting members 40, or there are 4 connecting members 40, but of course, there may be other connecting members 40 according to the actual connecting requirement, and the number is not limited herein.

Preferably, in the present embodiment, the number of the connecting members 40 is 2, and 2 connecting members 40 are spaced apart from each other along the length direction of the muffler 20, so that the stability of the connection of the dilution structure 30 to the muffler 20 is enhanced by 2 connecting members 40.

Further, as shown in fig. 1, the connectors 40 are two and one connector 40 is used to connect the mixing chamber 32 with the muffler 20 and the other connector 40 is used to connect the reaction chamber 33 with the muffler 20.

Thereby, it is convenient to enhance the connection stability of the mixing chamber 32, the reaction chamber 33 and the muffler 20.

For example, as shown in fig. 1, the first ring portion 41 of one of the two connection members 40 is sleeved on the mixing chamber 32, the second ring portion 42 is sleeved on the muffler 20, and the first ring portion 41 of the other of the two connection members 40 is sleeved on the reaction chamber 33, and the second ring portion 42 is sleeved on the muffler 20.

Thereby, it is convenient to connect the mixing chamber 32 to the muffler 20 through one of the two connection pieces 40, and to connect the reaction chamber 33 to the muffler 20 through one of the two connection pieces 40, which is advantageous to enhance the connection stability thereof.

It will be appreciated that the mixing chamber 32 and the reaction chamber 33 may be in communication by a conduit, and that the mixing chamber 32 is located upstream of the reaction chamber 33 in the flow direction of the off-gas.

Therefore, tail gas firstly enters the mixing chamber 32 to be mixed with air, then the mixed tail gas enters the reaction chamber 33, the mixed tail gas consumes hydrogen through catalytic reaction in the reaction chamber 33 to reduce the hydrogen concentration in the tail row, then the reacted tail gas enters the outlet end 12 through the exhaust port to mix the reacted tail gas with external air, so that the hydrogen concentration in the tail row is reduced again, and then the tail gas is discharged from the outlet end 12.

Further, as shown in fig. 1, a regulating valve 34 is provided between the air inlet 35 and the inlet end 11 of the air line 10.

Preferably, the regulating valve 34 is disposed at the air inlet 35, and the regulating valve 34 is located between the inlet end 11 and the air inlet 35, so as to control the flow rate of the air entering the air inlet 35 from the inlet end 11 through the regulating valve 34, so that a proper amount of air can enter the mixing chamber 32, and the reaction effect of the hydrogen in the exhaust gas and the air in the reaction chamber 33 is prevented from being affected by the excessive entering air.

In some embodiments, the outer peripheral wall of the mixing chamber 32 and the outer peripheral wall of the reaction chamber 33 are respectively integrated with the outer peripheral wall of the muffler 20.

That is, the outer peripheral wall of the mixing chamber 32 is welded to the outer peripheral wall of the muffler 20, or the outer peripheral wall of the mixing chamber 32 is adhesively bonded to the outer peripheral wall of the muffler 20; the outer peripheral walls of the reaction chamber 33 are welded to the outer peripheral walls of the muffler 20, respectively, or the outer peripheral walls of the reaction chamber 33 are bonded to the outer peripheral walls of the muffler 20, respectively.

From this, on the one hand, do not need to set up connecting piece 40 alone and connect, be convenient for save connecting piece 40's setting, do benefit to reduction in production cost, on the other hand does benefit to and realizes diluting structure 30 and the integrated setting of muffler 20 to be convenient for save overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes tail silencer 100.

In other embodiments, the peripheral wall of the dilution structure 30 is integrated with the peripheral wall of the muffler 20. That is, the outer peripheral wall of the dilution structure 30 is welded or bonded to the outer peripheral wall of the muffler 20.

From this, need not set up connecting piece 40 alone and dilute being connected between structure 30 and the muffler 20, be convenient for save connecting piece 40's setting, do benefit to reduction in production cost, and do benefit to and realize diluting structure 30 and muffler 20 integrated setting to be convenient for save overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes tail muffler device 100.

It should be noted that the above welding connection or bonding connection is only used for illustration and does not represent a limitation thereto.

In some embodiments, the mixing chamber 32 and the reaction chamber 33 are each independently configured as a cylinder.

Thereby, it is convenient to reduce the difficulty of production of the mixing chamber 32 and the reaction chamber 33, and to enable smooth flow of gas in the mixing chamber 32 and the reaction chamber 33.

Further, the reaction chamber 33 has a metal catalyst therein, and the metal catalyst is adapted to contact with the mixed gas discharged from the mixing chamber 32 and perform a catalytic reaction.

The mixed gas is a mixture of hydrogen in the tail row and air in the mixing chamber 32, so that after the mixed gas enters the reaction chamber 33, the mixed gas contacts with the metal catalyst and undergoes a catalytic reaction to consume the hydrogen in the mixed gas, thereby further reducing the hydrogen concentration in the tail row.

The reaction condition of the metal catalyst and the mixed gas is normal temperature, the metal catalyst can be adsorbed on the surface of the carrier, the carrier is installed in the reaction chamber 33, and the carrier is an independent carrier, i.e. the carrier and the reaction chamber 33 are designed in a split mode.

For example: the metal catalyst may be pt, and pt may catalytically react with the mixed gas at normal temperature, wherein the carrier is configured as a honeycomb ceramic carrier, the honeycomb ceramic carrier is fixedly mounted on the inner wall of the reaction chamber 33 through a gasket, and pt is adsorbed on the surface of the honeycomb ceramic carrier.

From this, be convenient for strengthen honeycomb ceramic carrier's structural stability through setting up the liner, and pt adsorbs on honeycomb ceramic carrier's surface, is convenient for increase pt and mist's area of contact, and then improves catalytic reaction's reaction rate, does benefit to the hydrogen concentration in the rapid reduction mist.

The utility model also provides a vehicle.

According to the utility model discloses a vehicle, including any one above-mentioned embodiment tail-row silencing device 100.

The vehicle may be a fuel cell vehicle or the like, and further may be a hydrogen fuel cell vehicle, and the vehicle is provided with a tail exhaust system, wherein the tail exhaust system is provided with the tail exhaust silencer 100.

According to the utility model discloses vehicle, its tail is arranged silencing device 100 and is through setting up muffler 20 on air pipeline 10, so as to realize the weakening of tail row noise, and dilute structure 30 and can dilute the hydrogen in the tail row, be convenient for reduce the hydrogen concentration in the tail row, so that the hydrogen concentration in the tail row accords with safe emission concentration scope, and simultaneously, dilute structure 30 and muffler 20 and link to each other, in order to dilute structure 30 and muffler 20 integrated setting, so as to save the overall arrangement space, make its structure compacter, do benefit to the miniaturized design that realizes tail row silencing device 100.

In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A tail muffler assembly, comprising:

the air pipeline is sleeved with a silencer;

the dilution structure is provided with an air inlet, a hydrogen inlet and an exhaust port, the air inlet is communicated with the inlet end of the air pipeline, the hydrogen inlet is communicated with the anode side of the fuel cell system, the exhaust port is communicated with the outlet end of the air pipeline, the dilution structure is connected with the silencer, the dilution structure comprises a mixing chamber and a reaction chamber which are sequentially communicated along the gas flow direction, the air inlet and the hydrogen inlet are arranged at the front end of the mixing chamber, the exhaust port is arranged at the rear end of the reaction chamber, the outlet of the mixing chamber is communicated with the inlet of the reaction chamber, and at least one of the mixing chamber and the reaction chamber is connected with the silencer.

2. The exhaust silencer according to claim 1, further comprising: a connector for connecting the dilution structure with the muffler.

3. The exhaust muffler device according to claim 2, wherein the connecting member is configured as a clip and includes a first ring portion and a second ring portion fixedly connected to each other, the first ring portion being disposed outside the dilution structure, and the second ring portion being disposed outside the muffler.

4. The tail silencer assembly of claim 2, wherein the plurality of connectors are arranged in a row, and the plurality of connectors are sequentially arranged along the length of the silencer.

5. The exhaust silencer assembly of claim 4, wherein said connectors are two and one of said connectors is adapted to connect said mixing chamber to said silencer and the other of said connectors is adapted to connect said reaction chamber to said silencer.

6. The exhaust silencer assembly of claim 1, wherein a regulator valve is disposed between the air inlet and the inlet end of the air conduit.

7. The exhaust silencer device according to claim 1, wherein the outer peripheral wall of the mixing chamber and the outer peripheral wall of the reaction chamber are respectively integrated with the outer peripheral wall of the silencer.

8. The exhaust silencer assembly of claim 1, wherein the mixing chamber and the reaction chamber are each independently configured as a cylinder.

9. The exhaust silencer assembly of claim 8, wherein the reaction chamber has a metal catalyst therein, the metal catalyst adapted to contact and catalytically react with the mixed gas exiting the mixing chamber.

10. A vehicle characterized by comprising the tail silencer of any one of claims 1 to 9.

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