CN222731615U - Large-displacement double-channel muffler - Google Patents
Large-displacement double-channel muffler Download PDFInfo
- Publication number
- CN222731615U CN222731615U CN202421555540.1U CN202421555540U CN222731615U CN 222731615 U CN222731615 U CN 222731615U CN 202421555540 U CN202421555540 U CN 202421555540U CN 222731615 U CN222731615 U CN 222731615U
- Authority
- CN
- China
- Prior art keywords
- muffler
- chamber
- expansion tube
- pipe
- silencing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 18
- 230000030279 gene silencing Effects 0.000 claims description 86
- 238000005192 partition Methods 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
本实用新型公开了一种大排量双通道消声器，包括设置有外筒体的筒体组件，外筒体的腔室内设置有由进气管、膨胀管组件、多孔管组和排气管组组成的消音组件；排气管组包括第一排气管和第二排气管；膨胀管组件包括内膨胀管和外膨胀管，内膨胀管的两端与进气管和第一排气管连接，内膨胀管和外膨胀管之间形成第一消音层，外膨胀管与第一外筒体之间形成第一消音腔室，外筒体的腔室内设置有不与第一消音腔室连通的第二消音腔室；多孔管组的一端通过第二消音腔室与第二排气管连通，另一端与第一消音腔室连通。该实用新型通过采用分别与膨胀管组件和多孔管组连通的双排气通道结构设计，实现排气低阻力、高效和低噪音的同时，提高发动机的动力转化效率。
The utility model discloses a large-displacement dual-channel muffler, comprising a cylinder assembly provided with an outer cylinder, a muffler assembly consisting of an intake pipe, an expansion tube assembly, a porous tube group and an exhaust pipe group provided in the chamber of the outer cylinder; the exhaust pipe group includes a first exhaust pipe and a second exhaust pipe; the expansion tube assembly includes an inner expansion tube and an outer expansion tube, the two ends of the inner expansion tube are connected with the intake pipe and the first exhaust pipe, a first muffler layer is formed between the inner expansion tube and the outer expansion tube, a first muffler chamber is formed between the outer expansion tube and the first outer cylinder, a second muffler chamber not connected with the first muffler chamber is provided in the chamber of the outer cylinder; one end of the porous tube group is connected with the second exhaust pipe through the second muffler chamber, and the other end is connected with the first muffler chamber. The utility model adopts a dual exhaust channel structure design respectively connected with the expansion tube assembly and the porous tube group, so as to achieve low exhaust resistance, high efficiency and low noise, and improve the power conversion efficiency of the engine.
Description
Technical Field
The utility model relates to the technical field of motorcycle silencers, in particular to a large-displacement dual-channel silencer.
Background
The existing muffler for the large-displacement motorcycle has the following problems:
1. In order to improve the volume of sound elimination and reduce noise, a multistage silencing structure is arranged in the cylinder body, so that the exhaust resistance is increased, and the output power and torque of the motorcycle engine are seriously influenced;
2. in order to improve the exhaust efficiency, the silencing module in the cylinder body is reduced, so that the exhaust noise is large;
3. The single exhaust channel structure design is adopted, so that the exhaust air resistance is large and the power loss is large when the rotation speed of the motorcycle engine is high.
Therefore, in order to solve the above problems, it is necessary to develop a large-displacement dual-channel muffler to improve the power conversion efficiency of an engine while achieving low resistance, high efficiency and low noise of exhaust.
Disclosure of utility model
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
The large-displacement double-channel muffler comprises a cylinder assembly and is characterized in that the cylinder assembly comprises an outer cylinder body provided with an air inlet and an air outlet, a silencing assembly is arranged in a cavity of the outer cylinder body, and the silencing assembly comprises an air inlet pipe, an expansion pipe assembly, a porous pipe group and an exhaust pipe group which are sequentially arranged;
The exhaust pipe group comprises a first exhaust pipe and a second exhaust pipe which are mutually different and coaxially arranged at the exhaust port;
the expansion pipe assembly comprises an inner expansion pipe and an outer expansion pipe wrapped on the inner expansion pipe, wherein two ends of the inner expansion pipe are respectively connected with an air inlet pipe and a first exhaust pipe, the other end of the air inlet pipe is connected with an air inlet, a first silencing layer communicated with the inner expansion pipe is formed between the inner expansion pipe and the outer expansion pipe, a first silencing chamber communicated with the first silencing layer is formed between the outer expansion pipe and a first outer cylinder body, and a second silencing chamber which is not communicated with the first silencing chamber is arranged in the chamber of the outer cylinder body;
The porous tube group comprises porous tubes which are oppositely arranged by taking the axis of the outer cylinder body as the center, one end of each porous tube is communicated with the second exhaust tube through the second silencing chamber, and the other end of each porous tube is communicated with the first silencing chamber.
Preferably, the inner expansion pipe is provided with at least an expansion section provided with a first through hole, the outer expansion pipe is provided with at least an expansion section provided with a second through hole, the first through hole enables the inner cavity of the inner expansion pipe to be communicated with the first silencing layer, and the second through hole enables the first silencing layer to be communicated with the first silencing cavity.
Preferably, the first through holes are axially distributed by taking the axis of the inner expansion pipe as the center circumference, the second through holes are axially distributed by taking the axis of the outer expansion pipe as the center circumference, and the first through holes and the second through holes are distributed in a staggered manner.
Preferably, a third silencing chamber is arranged between the first silencing chamber and the second silencing chamber, the porous pipe is arranged in the third silencing chamber, and two ends of the porous pipe are respectively communicated with the first silencing chamber and the second silencing chamber.
Preferably, the first exhaust pipe is provided with a plurality of first silencing holes at the position of the second silencing chamber.
Preferably, an inner cylinder body is further arranged in the cavity of the outer cylinder body, the inner cylinder body extends from the first silencing cavity to the third silencing cavity, and a plurality of second silencing holes are formed in the inner cylinder body.
Preferably, a silencing material is arranged between the outer cylinder body and the inner cylinder body.
Preferably, a first partition plate is arranged between the first silencing chamber and the third silencing chamber, and a second partition plate is arranged between the second silencing chamber and the third silencing chamber;
The two ends of the porous pipe penetrate through the first partition board and the second partition board respectively and are communicated with the first silencing chamber and the third silencing chamber.
Preferably, the first separator and the second separator are foamed aluminum plates.
Preferably, two ends of the outer expansion pipe are connected with two ends of the inner expansion pipe or respectively connected with the outer side walls of the air inlet pipe and the first exhaust pipe.
Compared with the prior art, the utility model has the beneficial effects that:
Compared with the single exhaust channel and the multi-stage silencing structure in the prior art, the double exhaust channel structure design which is respectively communicated with the expansion pipe assembly and the porous pipe assembly is adopted, so that the power conversion efficiency of the engine is improved while the exhaust is low in resistance, high in efficiency and low in noise.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is an exploded view of the hidden outer cylinder of the present utility model;
wherein, the cylinder assembly 1, the air inlet pipe 2, the expansion pipe assembly 3, the porous pipe group 4, the air exhaust pipe group 5, the inner cylinder 6, the first baffle 7, the second baffle 8, the first silencing layer 10, the outer cylinder 11, the first silencing chamber 20, the second silencing chamber 30, the inner expansion pipe 31, the outer expansion pipe 32, the third silencing chamber 40, the porous pipe 41, the first air exhaust pipe 51, the second air exhaust pipe 52, the second silencing hole 6a, the first through hole 31a, the second through hole 32a and the first silencing hole 51a.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Preferred embodiments of the present utility model are shown in the drawings. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model will be further described with reference to the accompanying drawings and detailed description below:
As shown in fig. 1 and 2, the large-displacement dual-channel muffler comprises a cylinder assembly 1, wherein the cylinder assembly 1 comprises an outer cylinder 11 provided with an air inlet and an air outlet, a silencing assembly is arranged in a cavity of the outer cylinder 11, and the silencing assembly comprises an air inlet pipe 2, an expansion pipe assembly 3, a porous pipe group 4 and an exhaust pipe group 5 which are sequentially arranged;
The exhaust pipe group 5 includes a first exhaust pipe 51 and a second exhaust pipe 52 which are disposed at exhaust ports different from each other;
The expansion pipe assembly 3 comprises an inner expansion pipe 31 and an outer expansion pipe 32 wrapped on the inner expansion pipe 31, wherein two ends of the inner expansion pipe 31 are respectively connected with the air inlet pipe 2 and the first air outlet pipe 51, the other end of the air inlet pipe 2 is connected with an air inlet, a first silencing layer 10 communicated with the inner expansion pipe 31 is formed between the inner expansion pipe 31 and the outer expansion pipe 32, a first silencing chamber 20 communicated with the first silencing layer 10 is formed between the outer expansion pipe 32 and the first outer cylinder 11, and a second silencing chamber 30 which is not communicated with the first silencing chamber 20 is arranged in a chamber of the outer cylinder 11;
The porous tube group 4 includes a porous tube 41 disposed opposite to each other with the axis of the outer cylinder 11 as the center, and one end of the porous tube 41 communicates with the second exhaust pipe 52 through the second muffler chamber 30 and the other end communicates with the first muffler chamber 20.
In this embodiment, due to the abrupt increase of the sectional area of the expansion pipe assembly 3, the sound waves in the exhaust gas undergo internal and external expansion and reflection twice to be lost, noise is reduced, the first effect chamber and the second sound attenuation chamber 30 are communicated through the porous pipe 41, the acoustic impedance is changed by the change of the sectional area of the porous pipe 41, the acoustic transmission loss is improved, the noise passing frequency is eliminated, the sound attenuation frequency is widened, and the sound attenuation performance is improved.
In this embodiment, compared with the multi-stage silencing structure of the prior art, by adopting the design of the double exhaust passage structure which is respectively communicated with the expansion pipe assembly 3 and the porous pipe assembly 4, the exhaust gas is discharged from the first exhaust passage and the second exhaust passage after the inner expansion pipe 31 is expanded, and the exhaust gas entering the first exhaust passage sequentially enters the first silencing layer 10 and the first silencing chamber 20 to be subjected to progressive expansion to consume sound energy, then enters the second silencing chamber 30 through the porous pipe assembly 4 to be subjected to silencing treatment and is discharged from the second exhaust pipe 52, and the exhaust gas entering the second exhaust passage is discharged after being subjected to treatment directly through the first exhaust pipe 51 due to expansion loss in the inner expansion pipe 31 and interception of part of sound energy.
Further, as shown in fig. 1 and 2, in order to enable the exhaust gas to flow rapidly and effectively, the exhaust gas sequentially enters the first silencing layer 10 and the first silencing chamber 20 from the inner cavity of the inner expansion pipe 31, at least the expansion section of the inner expansion pipe 31 is provided with a first through hole 31a, at least the expansion section of the outer expansion pipe 32 is provided with a second through hole 32a, the first through hole 31a enables the inner cavity of the inner expansion pipe 31 to be communicated with the first silencing layer 10, and the second through hole 32a enables the first silencing layer 10 to be communicated with the first silencing chamber 20.
Further, as shown in fig. 1 and 2, in order to increase the amount of exhaust gas entering the first muffler layer 10 and the first muffler chamber 20, more sound waves and airflow entering are intercepted, the first through holes 31a are axially distributed with the axis of the inner expansion pipe 31 as the center circumference, and the second through holes 32a are axially distributed with the axis of the outer expansion pipe 32 as the center circumference;
in addition, in order to enhance the acoustic energy loss effect of the first silencing layer 10 entering the first silencing chamber 20, the first through holes 31a and the second through holes 32a are arranged in a staggered manner.
Further, as shown in fig. 1, a third silencing chamber 40 is disposed between the first silencing chamber 20 and the second silencing chamber 30 in the outer cylinder 11, and the porous pipe 41 is disposed in the third silencing chamber 40, and two ends of the porous pipe are respectively communicated with the first silencing chamber 20 and the second silencing chamber 30.
In this embodiment, the third silencing chamber 40 is provided to form a multi-silencing chamber and porous tube combination 4, and the acoustic impedance is changed by using the change of the cross-sectional area of the chamber, so that the acoustic transmission loss is effectively improved, and the silencing amount is further improved.
Further, as shown in fig. 1 and 2, in order to enhance the low-frequency silencing effect of the exhaust passage, a plurality of first silencing holes 51a are formed in the position of the first exhaust pipe 51 located in the second silencing chamber 30.
Further, as shown in fig. 1 and 2, in order to increase the acoustic energy loss of the exhaust gas entering the first silencing chamber 20 and the third silencing chamber 40, to increase the silencing amount, an inner cylinder 6 is further disposed in the chamber of the outer cylinder 11, the inner cylinder 6 extends from the first silencing chamber 20 to the third silencing chamber 40, and a plurality of second silencing holes 6a are disposed on the inner cylinder 6.
Furthermore, in order to enhance the loss of the sound energy of the exhaust gas and enhance the noise elimination effect, a noise elimination material (not shown in the figure) is arranged between the outer cylinder 11 and the inner cylinder 6, and the noise elimination material is glass fiber.
Further, as shown in fig. 1 and 2, in order to form a plurality of mutually independent silencing chambers in the outer cylinder 11 and improve the silencing effect, a first partition 7 is arranged between the first silencing chamber 20 and the third silencing chamber 40, and a second partition 8 is arranged between the second silencing chamber 30 and the third silencing chamber 40;
Both ends of the perforated pipe 41 penetrate the first and second separators 7 and 8, respectively, and communicate with the first and third sound-deadening chambers 20 and 40.
Further, the first separator 7 and the second separator 8 are foamed aluminum plates.
In this embodiment, compared with the partition plate made of steel plate in the prior art, the foam aluminum plate can enable the muffler to be light, and meanwhile, the foam aluminum is a good sound absorption material and plays a role in attenuating noise.
Further, as shown in FIG. 1, in order to enhance the connection stability between the outer expansion pipe 32 and the inner expansion pipe 31, both ends of the outer expansion pipe 32 are connected to both ends of the inner expansion pipe 31 or to the outer side walls of the intake pipe 2 and the first exhaust pipe 51, respectively.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421555540.1U CN222731615U (en) | 2024-07-03 | 2024-07-03 | Large-displacement double-channel muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421555540.1U CN222731615U (en) | 2024-07-03 | 2024-07-03 | Large-displacement double-channel muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222731615U true CN222731615U (en) | 2025-04-08 |
Family
ID=95226357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421555540.1U Active CN222731615U (en) | 2024-07-03 | 2024-07-03 | Large-displacement double-channel muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222731615U (en) |
-
2024
- 2024-07-03 CN CN202421555540.1U patent/CN222731615U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110030061B (en) | Exhaust silencer of racing car | |
| CN114233606A (en) | A muffler structure for a fuel cell | |
| CN209604120U (en) | An automobile air intake pipe noise reduction structure | |
| CN217421325U (en) | Large-displacement silencer | |
| CN201934169U (en) | Exhaust silencer of diesel engine | |
| CN212690151U (en) | Silencer with passive valve | |
| CN2921306Y (en) | Impedance compound muffler | |
| CN213510797U (en) | Multi-cavity resonance composite muffler | |
| CN211737261U (en) | A vehicle exhaust muffler and vehicle | |
| CN113586216B (en) | Automobile, exhaust silencer and control method thereof | |
| CN106801637B (en) | Box type silencer for motorcycle | |
| CN217206614U (en) | Novel conical silencer with pressure relief structure | |
| CN216112758U (en) | Silencer air inlet pipe | |
| CN110454258A (en) | A single-cylinder diesel engine exhaust muffler for vehicles | |
| CN209855880U (en) | Exhaust silencer for racing car | |
| CN1039550C (en) | silencer | |
| CN222596156U (en) | A new type of motorcycle muffler | |
| CN223270044U (en) | Broadband resistant muffler, engine exhaust system and general engine | |
| CN221002899U (en) | Serial exhaust muffler for hydrogen fuel cell | |
| CN111173589B (en) | Porous buffering resonance mute type silencer and generator set | |
| CN222527911U (en) | Muffler of refrigeration air conditioner | |
| CN217327462U (en) | Rear silencer and silencing system of vehicle | |
| CN222731622U (en) | Heat-insulating anti-vibration muffler | |
| CN223549330U (en) | Muffler and four-turbine double-exhaust diesel engine | |
| CN216077269U (en) | Folding repeated silencer structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |