CN213235188U

CN213235188U - Modular main muffler and exhaust system

Info

Publication number: CN213235188U
Application number: CN202021664361.3U
Authority: CN
Inventors: 王国增; 朱锡庆; 赵金刚; 刘仲阳
Original assignee: Haima Motor Corp; Haima New Energy Vehicle Co Ltd
Current assignee: Haima Motor Corp; Haima New Energy Vehicle Co Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-05-18
Anticipated expiration: 2030-08-11

Abstract

The utility model relates to an auto-parts technical field, concretely relates to modularization main muffler and exhaust system. The modular main muffler comprises a cylinder body, an air inlet pipe, an air outlet pipe and two outer plates; the outer plates are respectively arranged at two ends of the length direction of the cylinder body to close the end openings so as to form a closed silencing main body; the air inlet pipe and the exhaust pipe are both arranged on the silencing main body and communicated with the interior of the cylinder; the cylinder body and the outer plate are made in a modularized way. The muffler can be efficiently and quickly combined to form mufflers suitable for different requirements.

Description

Modular main muffler and exhaust system

Technical Field

The utility model relates to an auto-parts technical field particularly, relates to a modularization main muffler and exhaust system.

Background

The automobile exhaust system mainly comprises an auxiliary silencer and a main silencer, wherein the main silencer is of a composite structure combined by impedance, the internal pipelines of the silencers are designed according to whether the air flow in the silencers is smooth or not and the difference of the medium-low frequency sound attenuation amount, and the structures of expansion cavities and resonant cavities with different lengths are matched so as to ensure the smoothness of the air flow and the width and the sound attenuation amount of a sound attenuation frequency band.

At present, the main silencer has a complex internal structure, a plurality of forms and poor universality and activity.

SUMMERY OF THE UTILITY MODEL

The objects of the present invention include, for example, providing a modular main muffler and exhaust system that can be efficiently and quickly combined to form mufflers that accommodate different requirements.

The embodiment of the utility model discloses a can realize like this:

in a first aspect, an embodiment of the present invention provides a modular main muffler, including:

the device comprises a cylinder body, an air inlet pipe, an exhaust pipe and two outer plates;

the outer plates are respectively arranged at two ends of the cylinder in the length direction to close the end openings so as to form a closed silencing main body; the air inlet pipe and the exhaust pipe are both arranged on the silencing main body and communicated with the interior of the cylinder;

the cylinder body and the outer plate are made in a modularized mode.

The modularization main silencer of this scheme overcomes the inside spare part of silencer that exists among the prior art and borrows the low problem of rate of utilization through the mode of carrying out the modularization manufacturing with barrel and planking, can realize the commonality of internals through the modularized design to realize the biggest universalization. Meanwhile, through the application of the modular main muffler, the development cost and the period are reduced, the product quality and the cost advantage are improved, and the requirements of consumers on individuation can be met.

In an alternative embodiment, the outer plates are identical in shape and size.

The outer plates with the same shape and size can be quickly processed and manufactured, and large-scale flow line production is facilitated; and the modularized outer plate increases the universality of the outer plate, is convenient for the assembly of the outer plate and the cylinder body and the maintenance of the silencer, and has remarkable economic benefit.

In an optional embodiment, the device further comprises at least one partition plate, wherein the partition plate is arranged on the inner wall of the cylinder body, and the edge of the partition plate is hermetically connected with the cylinder body;

the partition plate and the outer plate are made in a modularized mode.

The baffle and the planking have all realized the modularized mode of manufacture, can further improve the commonality of product for the assembly of modularization main muffler is more convenient, and maintains and maintain also more convenient, has also reduced the cost that baffle, planking were made respectively and are brought simultaneously.

In an alternative embodiment, the partition plate and the outer plate are the same in shape and size. The partition plate and the outer plate in the same shape and size enable the silencer to be more conveniently assembled, the assembling and maintaining cost is obviously reduced, and the economical efficiency of products is obviously improved.

In an alternative embodiment, the modular main muffler further comprises an acoustic baffle;

the sound insulation board is formed by arranging a plurality of preset through holes on the board surface of the partition board.

The sound insulation board manufactured by the partition board also realizes the same modular manufacture as the outer board and the partition board, the processing efficiency is obviously improved, and the production cost is also obviously reduced.

In an alternative embodiment, an expansion tube is further included;

one end of the expansion pipe can penetrate through the sound insulation board, and the outer wall of the expansion pipe is hermetically connected with the sound insulation board;

the other end of the expansion pipe can penetrate through the partition board adjacent to the sound insulation board, and the outer wall of the expansion pipe is hermetically connected with the partition board.

The sound flow can pass through the sound insulation board through the expansion pipe, and the sound insulation effect of the sound insulation board is guaranteed.

In an optional embodiment, a plurality of preset through holes are formed in the tube wall of the expansion tube.

The arrangement mode of the expansion pipe further enhances the silencing effect of the resonant cavity formed by the sound insulation board and the partition board, ensures that sound flow can be transmitted to the other side of the partition board, and ensures that sound is digested layer by layer.

In an alternative embodiment, the device further comprises at least one plug cover and at least one exhaust pipe;

the silencing main body is at least provided with two air outlet holes along the two ends of the length direction of the cylinder body;

at least one exhaust pipe penetrates through the air outlet hole, and the outer wall of the exhaust pipe is hermetically connected with the silencing main body; the blocking cover seals other air outlets so as to keep the silencing main body sealed.

The mode of setting up of blanking cover and blast pipe can be according to the molding needs can the independent assortment realize left and right single row, and right and left are double, and the multiple exhaust form of unilateral single row satisfies market differentiation demand.

In an alternative embodiment, the outer plate and the adjacent partition plate form an end chamber, one end of the exhaust pipe is communicated with the end chamber, and the other end of the exhaust pipe extends and penetrates through another outer plate far away from the outer plate.

The arrangement mode of the exhaust pipe can further improve the silencing effect, and the exhaust pipe is simple in structure, does not need to increase extra accessories, and only can adjust the positions of the inlet and the outlet of exhaust.

In a second aspect, embodiments of the present invention provide an exhaust system including a modular main muffler according to any one of the preceding embodiments.

The utility model discloses beneficial effect includes, for example:

the modularization main silencer of this scheme is through carrying out the modularization with barrel and planking and making, so through the application of the modularization main silencer of this scheme to development cost and cycle are two to be fallen, have promoted the quality and the cost advantage of product, can satisfy the demand of consumer to individuation simultaneously. In conclusion, the modularized main silencer solves the problem that borrowing rate of internal parts of the silencer is low in the prior art, achieves universality of internal parts through modularized design, and guarantees achievement of maximum universality.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the modular main muffler of the present embodiment of the present invention.

Icon: 1-a first exhaust pipe; 2-a cylinder body; 3, an air inlet pipe; 4-a reinforcing plate; 5-a first acoustic panel; 6-a first separator; 7-a first outer plate; 8-a first blanking cover; 9-a first air outlet; 10-a second exhaust pipe; 11-a first dilation tube; 12-a second acoustic panel; 13-a second dilation tube; 14-a second separator; 15-a second outer plate; 16-a second blanking cover; 17-a second outlet hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The automobile exhaust system mainly comprises an auxiliary silencer and a main silencer, wherein the main silencer is of a composite structure combined by impedance, the internal pipelines of the silencers are designed according to whether the air flow in the silencers is smooth or not and the difference of the medium-low frequency sound attenuation amount, and the structures of expansion cavities and resonant cavities with different lengths are matched so as to ensure the smoothness of the air flow and the width and the sound attenuation amount of a sound attenuation frequency band. At present, the main silencer has a complex internal structure, a plurality of forms and poor universality and activity.

However, the inside of a general main muffler is usually composed of more than ten parts in size, the universality of internal parts is not always considered in the matching difference of a power system, and meanwhile, the problems of free switching of different exhaust forms, such as changing from left exhaust to right exhaust, changing from single exhaust to double exhaust and the like, are not fully considered in the follow-up modeling requirements. Although the structural form of the silencer is rich and diverse enough to meet the market demand, the development period is prolonged due to low borrowing rate of internal parts and poor universality of different exhaust structural forms, the cost is increased, and potential design risks exist.

To overcome the above problems, the following embodiments provide a modular main muffler.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a modular main muffler, and it can be seen from the diagram that the present embodiment provides a modular main muffler, which includes a cylinder 2, an intake pipe 3, an exhaust pipe and two outer plates.

The outer plates are respectively arranged at two ends of the length direction of the cylinder body 2 to close the end openings so as to form a closed silencing main body; the air inlet pipe 3 and the exhaust pipe are both arranged on the silencing main body and communicated with the interior of the cylinder 2; the cylinder body 2 and the outer plate are made in a modularized way.

The modularization main silencer of this scheme overcomes the inside spare part of silencer that exists among the prior art and borrows the low problem of rate through the mode of carrying out the modularization manufacturing with barrel 2 and planking, can realize the commonality of internals through the modularized design to realize the biggest universalization. Meanwhile, through the application of the modular main muffler, the development cost and the period are reduced, the product quality and the cost advantage are improved, and the requirements of consumers on individuation can be met.

As can be seen from the figure, in the present embodiment, the outer plates are all oval plate members. The cylinder 2 and the outer plate form a silencing body of an elliptical cylinder. It is understood that, in other embodiments of the present invention, the silencing body may also be in the shape of a cylinder, a column, etc. as long as it can achieve silencing, which is only an example and is not limited herein.

Referring to fig. 1, in the present embodiment of the invention, the shape and the size of the outer plate are the same. The outer plates with the same shape and size can be quickly processed and manufactured, and large-scale flow line production is facilitated; and the modular planking makes the commonality of planking increase, is convenient for the assembly of planking and barrel 2, and the maintenance of silencer, consequently has apparent economic benefits.

It should be noted that, furthermore, the shape, structure, material, and processing of the outer panel may be identical, thus further providing a level of modularity of the outer panel. After the outer plates are formed and the sizes of the outer plates are determined, the barrel body 2 can be formed only by wrapping the plate-shaped parts around the edges of the two outer plates, and then the silencing main body is manufactured, so that the production efficiency and the universality of the product are remarkably improved.

As can also be seen from the figure, in the embodiment, the device further comprises at least one partition plate, the partition plate is arranged on the inner wall of the cylinder 2, and the edge of the partition plate is hermetically connected with the cylinder 2; the partition board and the outer board are made in a modularized mode.

Furthermore, the shape and the size of the partition plate and the outer plate are the same. The partition plate and the outer plate in the same shape and size enable the silencer to be more conveniently assembled, the assembling and maintaining cost is obviously reduced, and the economical efficiency of products is obviously improved.

It will be appreciated that the baffle and outer plate may be identical in shape, construction, material, and fabrication process, thus further providing a level of modularity to the modular main muffler.

In the present embodiment of the present invention, the modular main muffler further comprises a sound insulation board; the sound-proof board is formed by arranging a plurality of preset through holes on the board surface of the clapboard. The sound insulation board manufactured by the partition board also realizes the same modular manufacture as the outer board and the partition board, the processing efficiency is obviously improved, and the production cost is also obviously reduced.

Optionally, in this embodiment of the present invention, the expansion pipe is further included; one end of the expansion pipe can penetrate through the sound insulation board, and the outer wall of the expansion pipe is hermetically connected with the sound insulation board; the other end of the expansion pipe can penetrate through the partition board adjacent to the sound insulation board, and the outer wall of the expansion pipe is connected with the partition board in a sealing mode. So can realize that the acoustic current passes the acoustic celotex board through the expansion pipe, ensure the syllable-dividing effect of acoustic celotex board.

Further, in the present embodiment of the present invention, a plurality of through holes are provided on the wall of the expanding tube.

In the present embodiment of the present invention, the present invention further comprises at least one blocking cover and at least one exhaust pipe; the silencing main body is at least provided with two air outlet holes along the two ends of the length direction of the cylinder body 2; at least one exhaust pipe penetrates through the air hole, and the outer wall of the exhaust pipe is hermetically connected with the silencing main body; the blocking cover seals other air outlets so as to keep the silencing main body sealed.

The utility model discloses an in this embodiment, planking and adjacent baffle formation end cavity, the one end and the end cavity intercommunication of blast pipe, the other end of blast pipe extend and wear to establish another planking of keeping away from this planking. The arrangement mode of the exhaust pipe can further improve the silencing effect, and the exhaust pipe is simple in structure, does not need to increase extra accessories, and only can adjust the positions of the inlet and the outlet of exhaust.

With continued reference to fig. 1, it can be seen that the modular main muffler of the present embodiment includes two outer plates (first and second outer plates 7 and 15, respectively), two bulkheads (first and

second bulkheads

6 and 14, respectively), two baffle plates (first and

second baffle plates

5 and 12, respectively), and two exhaust pipes (first exhaust pipe 1, respectively).

Disposed in this order along the longitudinal direction of the cylindrical body 2 are a first outer plate 7, a first baffle plate 6, a first baffle plate 5, a second baffle plate 12, a second baffle plate 14, and a second outer plate 15. Wherein the first baffle-panel 5 and the second baffle-panel 12 enclose to form a first chamber; the first baffle 6 and the first baffle 5 enclose to form a second chamber which is a resonant cavity; the first outer plate 7 and the first partition plate 6 are enclosed to form a third cavity which is an expansion cavity; the second baffle plate 12 and the second partition plate 14 enclose to form a fourth chamber, which is a resonant cavity; the second partition 14 and the second outer plate 15 enclose a fifth chamber, which is an expansion chamber. The resonant chamber is mainly used for eliminating low-frequency noise, and the expansion chamber is mainly used for eliminating low-intermediate frequency noise.

Further, the modular main muffler further comprises two expansion pipes, namely a first expansion pipe 11 and a second expansion pipe 13. The first extension pipe 11 is inserted through the first baffle 6 and the first baffle 5, respectively, and the second extension pipe 13 is inserted through the second baffle 12 and the second baffle 14, respectively.

In the embodiment, two air outlets are provided on the first outer plate 7, and two air outlets are provided on the second outer plate 15. One end of the first exhaust pipe 1 is disposed on the first partition 6, and one side of the other end is sequentially provided with the first baffle 5, the second baffle 12, the second partition 14, and the second outer plate 15, so that the third chamber is communicated with the outside.

One end of the second exhaust pipe 10 is disposed on the second partition 14, and the other end thereof sequentially penetrates through the second baffle 12, the first baffle 5, the first partition 6 and the first outer plate 7, so that the fifth chamber is communicated with the outside.

The remaining first air outlet holes 9 on the first outer plate 7 and the remaining second air outlet holes 17 on the second outer plate 15 are respectively sealed by plugging covers. Wherein the first air outlet hole 9 of the first outer plate 7 is sealed by the first cap 8, and the second air outlet hole 17 of the second outer plate 15 is sealed by the second cap 16.

The modular main muffler of this embodiment further includes a reinforcing plate 4, the reinforcing plate 4 being disposed inside the first chamber, and both ends of the reinforcing plate 4 being disposed on the first baffle plate 5 and the second baffle plate 12, respectively. The end part of the air inlet pipe 3 sequentially penetrates through the cylinder body 2 and the reinforcing plate 4, and the outer wall of the air inlet pipe 3 is hermetically connected with the cylinder body 2.

When the silencer is used, airflow enters the middle part, namely the first cavity, of the barrel body 2 from the air inlet pipe 3, the airflow is divided towards two sides, a part of the airflow enters the second cavity and the fourth cavity through the first sound insulation plate 5 and the second sound insulation plate 12, a part of the airflow enters the third cavity and the fifth cavity through the first expansion pipe 11 and the second expansion pipe 13, meanwhile, the air is divided through the expansion pipes, and then the divided airflow impacts with each other, so that the airflow flow velocity is slowed down, sound waves are interfered and reflected during propagation, sound energy is reduced, and airflow noise is eliminated.

Along the cross section direction of barrel 2, the modularization main muffler of this embodiment is bilateral symmetry respectively, and such structural style can make the noise cancelling effect of modularization main muffler left and right sides can both be ensured, the noise cancelling effect when having ensured both sides and exhausting. Wherein first planking 7 and second planking 15 prepare two ventholes respectively, can the independent assortment realize left and right single row according to the molding needs, and right and left are double, the multiple exhaust form of unilateral single row satisfies market differentiation demand. The shape of the elliptic section of the cylinder body 2 on the cross section plane is kept unchanged, the length of the cylinder body 2 can be freely changed to meet the requirements of power assemblies with different discharge capacities, meanwhile, the waste of internal space is avoided, and therefore the utilization rate is improved by reducing the number of parts.

It is understood that such an arrangement is merely an example, and in other embodiments of the present invention, different sound insulation plates are installed according to the requirement of the noise elimination frequency, the noise elimination effect can be ensured by selecting or adjusting the structures of the expansion cavities and the resonant cavities with the first to fifth different volumes, or the noise elimination effect can be achieved by other arrangements not according to the partition plate according to the performance of the noise; similarly, the number, shape and arrangement position of the air outlet holes, the exhaust pipes and the blocking covers on the first outer plate 7 and the second outer plate 15 can be adjusted according to the actual silencing requirement.

Further, the exhaust system may further include a sub-muffler. The auxiliary muffler is arranged between the three-way catalytic converter and the modular main muffler and has the main function of supplementing the main muffler and eliminating the noise components which cannot be eliminated by the main muffler. The exhaust system is simple in structure and convenient to operate, can obviously reduce the production period, improves the universality of products, and has outstanding economic benefits.

To sum up, the embodiment of the utility model provides a modularization main muffler and exhaust system has following advantage at least:

(1) the structure is simple and easy to realize, the design is reasonable, the performance requirement and the noise reduction requirement are met, and the product quality is improved;

(2) the modular design is adopted, the structure is flexible, the oval shape of the cylinder body 2 is kept unchanged, the volume change can meet the requirements of power systems with different discharge capacities by freely adjusting the length of the cylinder body 2, and the waste of internal space is avoided; parts are universal, maximized and easy to popularize and apply in a large scale, the manufacturing cost is reduced, and the development period is shortened;

(3) according to the modeling requirement, various exhaust forms of a left single row, a right single row, a left double row, a right double row and a single edge single row can be realized, and the differentiation requirement is met.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A modular main muffler, comprising:

the two outer plates are respectively arranged at two ends of the length direction of the cylinder body to close the end openings so as to form a closed silencing main body; the air inlet pipe and the exhaust pipe are both arranged on the silencing main body and communicated with the interior of the cylinder;

the cylinder body and the outer plate are made in a modularized mode.

2. The modular main muffler of claim 1, wherein:

the two outer plates are identical in shape and size.

3. The modular main muffler of claim 1, wherein:

the modular main muffler also comprises at least one partition plate, the partition plate is arranged on the inner wall of the cylinder body, and the edge of the partition plate is hermetically connected with the cylinder body;

the partition plate and the outer plate are made in a modularized mode.

4. The modular main muffler of claim 3, wherein:

the partition plate and the outer plate are identical in shape and size.

5. The modular main muffler of claim 3, wherein:

the modular main muffler further includes an acoustic baffle;

6. The modular main muffler of claim 5, wherein:

the modular main muffler further comprises an expansion pipe;

7. The modular main muffler of claim 6, wherein:

and the pipe wall of the expansion pipe is provided with a plurality of preset through holes.

8. The modular main muffler of any one of claims 1 to 7, wherein:

the modular main muffler further comprises at least one blanking cap and at least one exhaust pipe;

9. The modular main muffler of claim 8, wherein:

the outer plate and the adjacent partition plate form an end cavity, one end of the exhaust pipe is communicated with the end cavity, and the other end of the exhaust pipe extends to penetrate through the other outer plate far away from the outer plate.

10. An exhaust system, characterized by:

the exhaust system includes the modular main muffler of any of claims 1-9.