CN219733488U - Exhaust muffler device and vehicle with same - Google Patents

Abstract

The utility model provides an exhaust muffler device and a vehicle with the same. The exhaust silencer device comprises a front silencer and a rear silencer, wherein the front silencer at least comprises a front shell, the front shell is provided with a front silencing cavity, a front air inlet and a front air outlet are formed in the cavity wall of the front silencing cavity, a plurality of front silencing pipes are arranged in the front shell and extend along the length direction of the front shell, one front silencing pipe is communicated with the front air inlet, and any one of the other front silencing pipes is communicated with the front air outlet; the rear muffler at least comprises a rear shell body, the rear shell body is provided with a rear silencing cavity, a rear air inlet and a rear air outlet are formed in the cavity wall of the rear silencing cavity, a main silencing pipe and at least one rear silencing pipe are arranged in the rear shell body, a first end of the main silencing pipe is communicated with the rear air inlet, a second end of the main silencing pipe is communicated with the rear air outlet, the rear silencing pipe is communicated with the main silencing pipe, and the rear air inlet is communicated with the front air outlet through a connecting pipe. The problem that noise reduction capacity of the muffler is insufficient has been solved to this scheme.

Description

Exhaust muffler device and vehicle with same

Technical Field

The utility model relates to the technical field of vehicle exhaust, in particular to an exhaust muffler device and a vehicle with the same.

Background

In the driving of motor vehicles, exhaust noise and exhaust pollution of the engine are very high, and in order to reduce noise and exhaust pollution, muffler devices are provided on motor vehicles. At present, automobile development is required to have dynamic performance, and meanwhile, light weight design is required, and requirements of consumers on acoustic quality are also increasing, so that noise reduction and light weight become key points of exhaust system design. The order noise is generated due to the periodicity of engine ignition, while the high-speed exhaust gas generates the airflow noise. Therefore, a muffler is required to eliminate exhaust noise.

With the increase of engine power and displacement, the requirements for sound quality are also increased, and a larger muffler volume is required to reduce noise. But on the other hand the muffler volume is limited by the layout space; on the other hand, as the muffler volume increases, the weight increases, resulting in increased fuel consumption. The existing exhaust silencing valve is high in technical cost and low in application feasibility of A, B-level vehicle models, so that noise is expected to be improved through structural optimization under the condition that the volume of the silencer is not increased.

Aiming at the technical problem that the noise reduction capability of the noise elimination device is insufficient, no effective solution is proposed at present.

Disclosure of Invention

The utility model mainly aims to provide an exhaust muffler device and a vehicle with the same, so as to solve the problem of insufficient noise reduction capability of the muffler device in the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an exhaust muffler device comprising: the front muffler at least comprises a front shell, the front shell is provided with a front silencing cavity, a front air inlet and a front air outlet are formed in the cavity wall of the front silencing cavity, a plurality of front silencing pipes are arranged in the front shell, the front silencing pipes extend along the length direction of the front shell, one front silencing pipe is communicated with the front air inlet, and any one of the other front silencing pipes is communicated with the front air outlet; the rear muffler at least comprises a rear shell body, the rear shell body is provided with a rear silencing cavity, a rear air inlet and a rear air outlet are formed in the cavity wall of the rear silencing cavity, a main silencing pipe and at least one rear silencing tuning pipe are arranged in the rear shell body, wherein the first end of the main silencing pipe is communicated with the rear air inlet, the second end of the main silencing pipe is communicated with the rear air outlet, the rear silencing tuning pipe is communicated with the main silencing pipe, and the rear air inlet is communicated with the front air outlet through a connecting pipe.

Further, be provided with a plurality of preceding baffles in the preceding casing, preceding baffle is connected with preceding casing, and a plurality of preceding baffles are along the length direction interval setting of preceding casing to separate preceding amortization chamber into a plurality of first amortization chamber, offered at least one through-hole on the preceding baffle for at least one preceding amortization pipe to pass, be provided with at least one bracing piece between two at least adjacent preceding baffles, the both ends of bracing piece are connected with adjacent preceding baffle respectively, and at least one first amortization intracavity is filled with the amortization material.

Further, a rear baffle is arranged in the rear shell and is connected with the rear shell, so that the rear silencing cavity is divided into two second silencing cavities, a main matching hole is formed in the rear baffle for the main silencing pipe to pass through, an auxiliary matching hole is formed in the rear baffle for the rear silencing pipe to pass through, the first end of the rear silencing pipe is communicated with the main silencing pipe, the first end of the rear silencing pipe is located in the second silencing cavity close to the rear air inlet, the second end of the rear silencing pipe is located in the other second silencing cavity, and silencing materials are filled in the second silencing cavity close to the rear air inlet.

Further, a plurality of auxiliary noise reduction holes are formed in the main noise reduction pipe, and the auxiliary noise reduction holes are arranged close to the rear air inlet.

Further, an auxiliary groove is formed in the outer peripheral surface of the main silencing tube, and the auxiliary groove is arranged close to the joint of the rear tuning tube and the main silencing tube.

Further, the main muffler pipe includes: a first housing; the second shell is connected with the first shell to form a first pipe section of the main silencing pipe, and the first end of the first pipe section is communicated with the rear air inlet; the rear exhaust core pipe is formed into a second pipe section of the main exhaust pipe, the first end of the rear exhaust core pipe is communicated with the second end of the first pipe section, the second end of the rear exhaust core pipe is communicated with the rear air outlet, part of the rear exhaust core pipe is positioned in the second exhaust cavity close to the rear air inlet, and the other part of the rear exhaust core pipe penetrates through the main matching hole and extends into the other second exhaust cavity; the first end of the rear tuning pipe is connected with the first shell and the second shell so that the rear tuning pipe is communicated with the first pipe section.

Further, the front baffle comprises a first front baffle, a second front baffle and a third front baffle, the first front baffle, the second front baffle and the third front baffle are sequentially arranged along the length direction of the front shell to form four first silencing cavities, a supporting rod is arranged in front of the second front baffle and the third front baffle, the front silencing tube comprises a short silencing tube, a long air inlet silencing tube and a long air outlet silencing tube, wherein the first end of the long air inlet silencing tube is communicated with the front air inlet, the second end of the long air inlet silencing tube is located between the second front baffle and the third front baffle, the first end of the short silencing tube is located between the first front baffle and the front air inlet, the second end of the short silencing tube is located between the second front baffle and the third front baffle, the first end of the long air outlet silencing tube is located between the first front baffle and the front air inlet, the second end of the long air outlet silencing tube is communicated with the front air outlet, and a plurality of silencing holes are formed in the tube wall of the front silencing tube.

Further, a blocking cover is arranged in the front shell and used for blocking the second end of the long air inlet sound-absorbing pipe.

Further, the front case includes: a cylinder; the air inlet end cover is connected with the first end of the cylinder body, and a front air inlet is formed in the air inlet end cover; the air outlet end cover is connected with the second end of the cylinder body, a front silencing cavity is formed among the air outlet end cover, the air inlet end cover and the cylinder body, and a front air outlet is formed in the air outlet end cover; the first end of the long air inlet silencing pipe penetrates through the front air inlet and extends out of the front silencing cavity, and the second end of the long air outlet silencing pipe penetrates through the front air outlet and extends out of the front silencing cavity.

According to another aspect of the present utility model, there is provided a vehicle having an exhaust muffler device as described above.

By applying the technical scheme of the utility model, the plurality of front silencing pipes in the front silencer can effectively eliminate order noise, the filled silencing material can eliminate airflow noise, the main silencing pipe and the rear silencing pipe are arranged in the rear silencer, the Homhz silencer can be formed, and the noise with specific frequency can be eliminated by changing the diameter of the rear silencing pipe and the size of the rear silencing cavity.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a pre-muffler according to the present utility model;

fig. 2 shows a schematic structural view of a second embodiment of a pre-muffler according to the present utility model;

FIG. 3 shows a schematic diagram of an embodiment of a pre-muffler according to the present utility model;

fig. 4 shows a schematic structural view of a first embodiment of a rear muffler according to the present utility model;

fig. 5 shows a schematic structural view of a second embodiment of a rear muffler according to the present utility model;

fig. 6 shows a schematic diagram of an embodiment of a rear muffler according to the present utility model.

Wherein the above figures include the following reference numerals:

1. an air inlet end cover; 2. an air outlet end cover; 3. a cylinder; 4. two-chamber silencing cotton; 5. four-cavity silencing cotton;

6. a first front eliminating baffle; 7. a second front-end baffle; 8. a third front eliminating baffle; 9. a short sound-absorbing tube; 10. a long air inlet silencing pipe; 11. a gas-out sound-eliminating pipe grows; 12. a first support bar; 13. a second support bar; 14. a blanking cover;

15. a lower housing; 16. an upper housing; 17. rear noise reduction cotton;

18. a first housing; 19. a second housing; 20. a post-tuning tube; 21. then the gas core pipe is eliminated; 22. a rear baffle; 23. an auxiliary noise reduction hole; 24. and an auxiliary groove.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present utility model will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

Referring to fig. 1 to 6, an exhaust muffler device is provided according to an embodiment of the present utility model.

The exhaust silencer device comprises a front silencer and a rear silencer, wherein the front silencer at least comprises a front shell, the front shell is provided with a front silencing cavity, a front air inlet and a front air outlet are formed in the cavity wall of the front silencing cavity, a plurality of front silencing pipes are arranged in the front shell and extend along the length direction of the front shell, one front silencing pipe is communicated with the front air inlet, and any one of the other front silencing pipes is communicated with the front air outlet; the back silencer at least comprises a back shell, wherein the back shell is provided with a back silencing cavity, a back air inlet and a back air outlet are formed in the cavity wall of the back silencing cavity, a main silencing pipe and at least one back silencing tuning pipe 20 are arranged in the back shell, a first end of the main silencing pipe is communicated with the back air inlet, a second end of the main silencing pipe is communicated with the back air outlet, the back silencing tuning pipe 20 is communicated with the main silencing pipe, and the back air inlet is communicated with the front air outlet through a connecting pipe.

By means of the technical scheme, the plurality of front silencing pipes in the front silencer can effectively eliminate order noise, the filling silencing material can eliminate airflow noise, the main silencing pipe and the rear silencing pipe 20 are arranged in the rear silencer, the Homholtz silencer can be formed, the noise with specific frequency can be eliminated by changing the diameter of the rear silencing pipe 20 and the size of the rear silencing cavity, the front silencer and the rear silencer are combined in the scheme, the noise reduction capacity of the silencing device is effectively improved, the problem that the noise reduction capacity of the silencing device is insufficient in the prior art is solved, the noise reduction effect is better, and user experience is improved.

Specifically, be provided with a plurality of preceding baffles in the preceding casing, preceding baffle is connected with preceding casing, and a plurality of preceding baffles are along the length direction interval setting of preceding casing to separate preceding amortization chamber into a plurality of first amortization chamber, offered at least one through-hole on the preceding baffle for at least one preceding amortization pipe to pass, be provided with at least one bracing piece between two at least adjacent preceding baffles, the both ends of bracing piece are connected with adjacent preceding baffle respectively, and at least one first amortization intracavity is filled with the amortization material. The supporting rod can strengthen the structural strength, and the silencing effect can be further improved by filling the silencing material.

Specifically, be provided with backplate 22 in the rear housing, backplate 22 is connected with the rear housing to separate into two second amortization chambeies with the amortization chamber of back, offered main mating hole on the backplate and passed for main amortization pipe, offered supplementary mating hole on the backplate and passed for back tuning pipe 20, back tuning pipe 20's first end and main amortization pipe intercommunication, and, back tuning pipe 20's first end is located the second amortization intracavity that is close to the back air inlet, and back tuning pipe 20's second end is located another second amortization intracavity, and second amortization intracavity that is close to the back air inlet is filled with the amortization material.

As shown in fig. 6, the rear baffle 22 divides the rear sound-deadening chamber into a second sound-deadening chamber I and a second sound-deadening chamber II (along the direction from the air inlet end to the air outlet end), the second sound-deadening chamber I is filled with rear sound-deadening cotton 17, and the rear tuning tube 20 extends into the second sound-deadening chamber II, so that after the air flow enters the main sound-deadening tube, part of the air flow enters the second sound-deadening chamber II through the rear tuning tube 20 and the rear tuning tube 20, and the rear tuning tube 20 and the second sound-deadening chamber II form a holtz silencer, and by changing the diameter of the rear tuning tube 20, the length of the rear tuning tube 20 extending into the second sound-deadening chamber II, and the volume of the second sound-deadening chamber II, low-frequency noise in a certain specific frequency band can be eliminated.

Wherein, offer a plurality of supplementary noise reduction holes 23 on the main noise reduction pipe, supplementary noise reduction hole 23 is close to the back air inlet setting. Through setting up supplementary hole of making an uproar 23 that falls, after the air current got into main noise reduction pipe, partial air current was through supplementary hole of making an uproar 23 entering into second amortization chamber I inside, owing to be provided with the amortization material in the second amortization chamber I, can eliminate partial high frequency noise.

Preferably, only one side of the main silencing tube is provided with an auxiliary noise reduction hole 23, so that turbulence is prevented from being generated on the other side of the circumference due to high airflow speed, and howling is prevented. Specifically, in the present embodiment, the auxiliary noise reduction hole 23 is opened on one side wall downward in the vertical direction.

Further, an auxiliary groove 24 is provided on the outer peripheral surface of the main muffler pipe, and the auxiliary groove 24 is provided near the junction of the rear tuning pipe 20 and the main muffler pipe. By providing the auxiliary groove 24, the post-tuning tube 20 is prevented from "squeaking" at the location where it mates with the first housing 18 due to the high airflow velocity.

Specifically, the main muffler pipe includes a first shell 18, a second shell 19, and a rear muffler outlet core pipe 21, the second shell 19 being connected to the first shell 18 to form a first pipe section of the main muffler pipe, the first end of the first pipe section being in communication with the rear inlet; the rear exhaust core pipe 21 forms a second pipe section of the main muffler pipe, a first end of the rear exhaust core pipe 21 is communicated with a second end of the first pipe section, a second end of the rear exhaust core pipe 21 is communicated with the rear air outlet, part of the rear exhaust core pipe 21 is positioned in a second muffler cavity close to the rear air inlet, and the other part of the rear exhaust core pipe 21 extends into the other second muffler cavity through the main matching hole; the first end of the tuning post 20 is connected to the first and second housings 18, 19 such that the tuning post 20 communicates with the first pipe segment.

As shown in fig. 4 to 6, in a preferred embodiment of the present utility model, the rear housing includes a lower housing 15 and an upper housing 16, a rear silencing cavity is enclosed between the lower housing 15 and the upper housing 16, a rear air inlet is formed on the upper housing 16, a rear air outlet is formed on the lower housing 15, a first housing 18, a second housing 19, a lower housing 15, an upper housing 16, a rear degassing core pipe 21 and a rear tuning pipe 20 are welded, air flow enters the rear silencer through a connecting pipe between the rear air inlet and the front air outlet, and a part of air flow is discharged out of the rear silencer through a main silencing pipe formed by the first housing 18, the second housing 19 and the rear degassing core pipe 21, so that a silencing effect is improved; a part of air flow enters the second silencing cavity I through auxiliary noise reduction holes 23 formed in the first shell 18 and the second shell 19, and part of high-frequency noise can be eliminated due to the silencing materials arranged in the second silencing cavity I; part of air flow enters the second silencing cavity II through the rear tuning pipe 20, the rear tuning pipe 20 and the second silencing cavity II form a Homhz silencer, and low-frequency noise in a certain specific frequency band can be eliminated by changing the diameter of the rear tuning pipe 20, the length of the rear tuning pipe 20 extending into the second silencing cavity II and the volume of the second silencing cavity II.

Specifically, preceding baffle includes first preceding baffle 6, preceding baffle 7 of second and preceding baffle 8 of third, the baffle 6 of first preceding baffle 6, preceding baffle 7 of second and preceding baffle 8 of third set gradually in order to form four first amortization chambeies before preceding baffle 7 of second and preceding baffle 8 of third, preceding baffle 7 of second is provided with the bracing piece before the baffle 8 of third, preceding silencer includes short silencer 9, long inlet silencer 10, long outlet silencer 11, wherein, long inlet silencer 10's first end and preceding air inlet intercommunication, long inlet silencer 10's second end is located between baffle 7 before the second and the preceding baffle 8 of third, short silencer 9's first end is located between baffle 6 before first and the preceding air inlet of first, short silencer 9's second end is located between baffle 7 before the preceding baffle 8 of second and the third, long outlet silencer 11's first end is located between baffle 6 before first and the preceding air inlet of first, long outlet silencer 11's second end and the preceding silencer's of gas outlet intercommunication, a plurality of sound-absorbing holes have been seted up on the preceding silencer's the pipe wall.

As shown in fig. 1 to 3, in this embodiment, the front silencing chamber is divided into a first silencing chamber I, a first silencing chamber II, a first silencing chamber III and a first silencing chamber iv (along the direction from the air inlet end to the air outlet end) by a first front silencing baffle 6, a second front silencing baffle 7 and a third front silencing baffle 8, two-chamber silencing cotton 4 is filled in the first silencing chamber II, four-chamber silencing cotton 5 is filled in the first silencing chamber iv, the silencing cotton can be replaced by the rest silencing materials with silencing functions, in this embodiment, the first front silencing baffle 6, the second front silencing baffle 7, a short silencing tube 9, a long air inlet silencing tube 10 and a long air outlet silencing tube 11 form a three-tube labyrinth silencing chamber (namely, the first silencing chamber II shown in fig. 3), and the first silencing chamber II is filled with silencing cotton to form an impedance composite type silencing chamber, so that medium-high-frequency noise can be eliminated, and part of airflow can be led out and dispersed airflow can be reduced.

Further, a blocking cover 14 is arranged in the front shell, and the blocking cover 14 is used for blocking the second end of the long air inlet sound-absorbing pipe 10. By arranging the blocking cover 14, part of the air flow can form sound wave reflux under the action of the blocking cover 14 to collide with the reverse air flow, so that the purpose of eliminating noise is achieved.

Specifically, the front shell comprises a cylinder body 3, an air inlet end cover 1 and an air outlet end cover 2, wherein the air inlet end cover 1 is connected with a first end of the cylinder body 3, and a front air inlet is formed in the air inlet end cover 1; the air outlet end cover 2 is connected with the second end of the cylinder body 3, a front silencing cavity is formed among the air outlet end cover 2, the air inlet end cover 1 and the cylinder body 3, and a front air outlet is formed on the air outlet end cover 2; wherein, the first end of the long air intake silencing tube 10 passes through the front air inlet and extends out of the front silencing cavity, and the second end of the long air outlet silencing tube 11 passes through the front air outlet and extends out of the front silencing cavity.

In a preferred embodiment of the utility model, the long intake silencing tube 10 is welded with the intake end cover 1, the first front silencing baffle 6 and the second front silencing baffle 7, and at the same time, the long intake silencing tube 10 extends to the outside of the intake end cover 1; the long-out gas silencing pipe 11 is welded with the gas outlet end cover 2, the first front silencing baffle 6, the second front silencing baffle 7 and the third front silencing baffle 8, and meanwhile the long-out gas silencing pipe 11 extends to the outer side of the gas outlet end cover 2; the first support rod 12 and the second support rod 13 are welded between the second front elimination baffle 7 and the third front elimination baffle 8 so as to improve the body strength of the front muffler and prevent radiation noise caused by insufficient strength; the airflow sound wave enters the first silencing cavity II from the long air inlet silencing pipe 10, and the middle and high frequency noise is eliminated through the part of the short silencing pipe 9, the long air inlet silencing pipe 10, the long air outlet silencing pipe 11 and silencing cotton in the first silencing cavity II; part of air flow enters the first silencing cavity III through the silencing holes in the pipe wall of the front silencing pipe, part of air flow can form sound wave backflow due to the effect of the blocking cover 14 to collide with reverse air flow so as to achieve the purpose of eliminating noise, and the other part of air flow enters the first silencing cavity I through the short silencing pipe 9 after entering the first silencing cavity III and then enters the first silencing cavity IV through the long-out air silencing pipe 11. In this embodiment, the pre-muffler is an expansion muffler, and the expansion cavity has a strong capacity of eliminating noise due to a large volume and a large sectional area, so that most of low-frequency noise can be filtered.

The pre-muffler in this embodiment has the following advantages: 1. a three-pipe labyrinth silencing cavity is formed in the first silencing cavity II, and the purpose of eliminating intermediate frequency noise is achieved by adjusting the diameter of a pipeline, the number of openings and the aperture size; 2. the long air inlet silencing pipe 10 forms acoustic wave reflux in the blocking cover 14 designed in the first silencing cavity III so as to eliminate partial noise; 3. the first silencing cavity III consists of the second front silencing baffle 7, the third front silencing baffle 8, the first support rod 12 and the second support rod 13, so that the strength of the silencer body can be effectively improved, and radiation noise can be reduced.

Specifically, the exhaust muffler device in the above embodiment can achieve the following technical effects: 1) The front muffler divides the front silencing cavity into four first silencing cavities through the front baffle plate, so that order noise is reduced; the first silencing cavity is filled with silencing cotton to eliminate airflow noise; 2) The independent short silencing pipe 9 and the long air outlet silencing pipe 11 are used in a combined mode, the flowing direction of air flow is changed, the length of the silencing pipe is increased, and order noise is effectively eliminated; 3) The first front noise elimination baffle 6, the second front noise elimination baffle 7, the short noise elimination pipe 9, the long air inlet noise elimination pipe 10 and the long air outlet noise elimination pipe 11 form a three-pipe labyrinth noise elimination cavity, and noise elimination cotton is filled in the cavity to form an impedance composite type muffler, so that middle and high frequency noise can be effectively eliminated; 4) In the first silencing cavity IV, silencing cotton is sleeved outside the long-out silencing pipe 11 to form a resistive silencer for eliminating airflow noise; 5) The rear muffler is a resistive muffler and is matched with the Homhz muffler to eliminate air flow noise and low-frequency noise in a specific frequency band.

In summary, the exhaust muffler device in this embodiment includes a front muffler and a rear muffler, where the front muffler is an expansion muffler, and the expansion muffler is used for low-frequency noise elimination, and the frequency acting range is generally 40Hz-200Hz; the three-pipe labyrinth muffler formed in the front muffler is used for medium-frequency noise, and the frequency action range is generally 100Hz-500Hz; the first silencing cavity II, the first silencing cavity IV and the second silencing cavity I are resistive silencers and are used for high-frequency noise, and the frequency range is more than 500Hz; the holtz silencer formed in the rear silencer is used for low frequency noise in a certain frequency band. The exhaust silencer device in the embodiment can eliminate broadband noise, namely, the order noise and the fluid noise can be eliminated at the same time, and the acoustic requirements are met.

According to another embodiment of the present utility model, there is provided a vehicle having an exhaust muffler device, which is the exhaust muffler device in the above embodiment. The exhaust muffler device in the embodiment is applied to a vehicle, and can eliminate airflow noise and order noise under the condition of limited muffler volume, so that the cost and weight are reduced.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., indicate that the particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the utility model, as generally described. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the utility model.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An exhaust muffler device, characterized by comprising:

the front silencer at least comprises a front shell, wherein the front shell is provided with a front silencing cavity, a front air inlet and a front air outlet are formed in the cavity wall of the front silencing cavity, a plurality of front silencing pipes are arranged in the front shell, the front silencing pipes extend along the length direction of the front shell, one front silencing pipe is communicated with the front air inlet, and any one of the other front silencing pipes is communicated with the front air outlet;

the rear muffler at least comprises a rear shell, the rear shell is provided with a rear silencing cavity, a rear air inlet and a rear air outlet are formed in the cavity wall of the rear silencing cavity, a main silencing pipe and at least one rear tuning pipe (20) are arranged in the rear shell, wherein a first end of the main silencing pipe is communicated with the rear air inlet, a second end of the main silencing pipe is communicated with the rear air outlet, the rear tuning pipe (20) is communicated with the main silencing pipe,

the rear air inlet is communicated with the front air outlet through a connecting pipe.

2. The exhaust silencer device according to claim 1, wherein a plurality of front baffles are arranged in the front shell, the front baffles are connected with the front shell, the front baffles are arranged at intervals along the length direction of the front shell so as to divide the front silencing cavity into a plurality of first silencing cavities, at least one through hole is formed in the front baffles for at least one front silencing pipe to pass through, at least one supporting rod is arranged between at least two adjacent front baffles, two ends of each supporting rod are connected with the adjacent front baffles respectively, and silencing materials are filled in at least one first silencing cavity.

3. The exhaust muffler device according to claim 1, characterized in that a back baffle (22) is provided in the back housing, the back baffle (22) is connected with the back housing to divide the back muffler chamber into two second muffler chambers, a main matching hole is provided on the back baffle for the main muffler pipe to pass through, an auxiliary matching hole is provided on the back baffle for the back tuning pipe (20) to pass through, a first end of the back tuning pipe (20) is communicated with the main muffler pipe, and a first end of the back tuning pipe (20) is located in the second muffler chamber near the back air inlet, a second end of the back tuning pipe (20) is located in the other second muffler chamber, and the second muffler chamber near the back air inlet is filled with a muffler material.

4. An exhaust muffler device according to claim 3, characterized in that the main muffler pipe is provided with a plurality of auxiliary noise reduction holes (23), the auxiliary noise reduction holes (23) being provided close to the rear air inlet.

5. An exhaust muffler device according to claim 3, characterized in that an auxiliary groove (24) is provided on the outer peripheral surface of the main muffler pipe, the auxiliary groove (24) being provided near the junction of the rear muffler pipe (20) and the main muffler pipe.

6. The exhaust muffler device as claimed in claim 3, wherein the main muffler pipe includes:

a first housing (18);

-a second housing (19), said second housing (19) being connected to said first housing (18) to form a first tube section of said primary muffler tube, a first end of said first tube section being in communication with said rear air inlet;

a rear exhaust gas core pipe (21), the rear exhaust gas core pipe (21) forming a second pipe section of the main exhaust gas pipe, a first end of the rear exhaust gas core pipe (21) being communicated with a second end of the first pipe section, a second end of the rear exhaust gas core pipe (21) being communicated with the rear gas outlet, a portion of the rear exhaust gas core pipe (21) being located in the second muffler chamber adjacent to the rear gas inlet, another portion of the rear exhaust gas core pipe (21) extending into the other second muffler chamber through the main mating hole;

the first end of the rear tuning pipe (20) is connected with the first shell (18) and the second shell (19) so that the rear tuning pipe (20) is communicated with the first pipe section.

7. The exhaust silencer device according to claim 2, wherein the front baffle comprises a first front baffle (6), a second front baffle (7) and a third front baffle (8), the first front baffle (6), the second front baffle (7) and the third front baffle (8) are sequentially arranged along the length direction of the front shell to form four first silencing cavities, the front baffle (7) and the third front baffle (8) are provided with the support rods, the front silencer comprises a short silencer tube (9), a long inlet silencer tube (10) and a long outlet silencer tube (11), the first end of the long inlet silencer tube (10) is communicated with the front air inlet, the second end of the long inlet silencer tube (10) is positioned between the second front baffle (7) and the third front baffle (8), the first end of the short silencer tube (9) is positioned between the first front silencer tube (6) and the first air inlet (7), the second end of the long inlet tube (11) is positioned between the first silencer tube and the first air inlet (7), and the second end of the long inlet tube (11) is positioned between the long inlet tube (11) and the first end of the long inlet silencer tube (7).

8. The exhaust muffler device according to claim 7, characterized in that a blocking cover (14) is provided in the front housing, the blocking cover (14) being adapted to block the second end of the long inlet muffler pipe (10).

9. The exhaust muffler device as defined in claim 7, wherein the front housing includes:

a cylinder (3);

the air inlet end cover (1), the air inlet end cover (1) is connected with the first end of the cylinder body (3), and the front air inlet is formed in the air inlet end cover (1);

the air outlet end cover (2) is connected with the second end of the cylinder body (3), the front silencing cavity is formed among the air outlet end cover (2), the air inlet end cover (1) and the cylinder body (3), and the front air outlet is formed in the air outlet end cover (2);

the first end of the long air inlet silencing pipe (10) penetrates through the front air inlet and extends out of the front silencing cavity, and the second end of the long air outlet silencing pipe (11) penetrates through the front air outlet and extends out of the front silencing cavity.

10. A vehicle having an exhaust muffler device, characterized in that the exhaust muffler device is the exhaust muffler device according to any one of claims 1 to 9.