CN203702287U - Muffler - Google Patents
Muffler Download PDFInfo
- Publication number
- CN203702287U CN203702287U CN201320786863.7U CN201320786863U CN203702287U CN 203702287 U CN203702287 U CN 203702287U CN 201320786863 U CN201320786863 U CN 201320786863U CN 203702287 U CN203702287 U CN 203702287U
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- CN
- China
- Prior art keywords
- space
- cylindrical shell
- inlet end
- silencing apparatus
- barrel body
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a muffler which comprises a barrel body, wherein the barrel body is provided with a gas inlet end and a gas outlet end; two partition plates are arranged in the barrel body; the outer rims of the partition plates are connected with the inner wall of the barrel body in a sealed manner; a plurality of gas flow holes are formed in the partition plates in the circumferential direction; the inner space of the barrel body is divided into a first space, a second space and a third space which have different volumes through the partition plates; the gas inlet end and the gas outlet end are respectively connected with a gas inlet pipe and a gas outlet pipe; a gas exhaust hole is formed in the surface of the part, which extends into the barrel body, of the gas outlet pipe. The inner space of the barrel body of the muffler is divided into the three spaces with different volumes through the partition plates with the gas flow holes, so that gas flow can be dramatically enlarged or reduced and then is discharged through a gas exhaust pipe after being abruptly changed for multiple times; sound waves are reflected for multiple times to generate destructive interference, and sound energy is obviously reduced and attenuated, so that the aim of muffling is fulfilled; a better muffling effect is achieved. Moreover, the muffler is simple in structure and low in cost.
Description
Technical field
The utility model belongs to silencing apparatus technical field, is specifically related to a kind of silencing apparatus.
Background technique
For eliminating the huge sound producing when motor is discharged the high temperature and high pressure gas after burning, automobile need to arrange silencing apparatus at exhaust duct place; Silencing apparatus can be divided into reactive muffler, dissipative muffler and impedance composite muffler three classes by noise-cancelling theory; Dissipative muffler absorbs acoustic energy by filling sucting sound material in exhaust duct and reaches noise elimination order; Reactive muffler is in silencing apparatus inside, the sectional area of pipeline is sharply strengthened or dwindled in a certain length part, makes sound wave in the time propagating, produce reflection and the Feng interference that disappears and reaches noise elimination object; Reactive muffler is better at low frequency, intermediate frequency soundproof effect; Improve high frequency soundproof effect, can adopt the sectional area of pipeline to have the reactive muffler or the impedance complex formula silencing apparatus that repeatedly sharply strengthen or dwindle variation, the structure of current reactive muffler or impedance complex formula silencing apparatus is too complicated, is unfavorable for manufacturing.
Model utility content
The purpose of this utility model is to solve the problems of the technologies described above and a kind of silencing apparatus of simple in structure and good muffling effect is provided.
For achieving the above object, the utility model is by the following technical solutions:
A kind of silencing apparatus, comprises cylindrical shell, and described cylindrical shell has inlet end and outlet side; In described cylindrical shell, be provided with two dividing plates, the outer rim of described dividing plate is connected with the inner wall sealing of described cylindrical shell, on described dividing plate, circumferentially offer multiple airflow holes, the inner space of described cylindrical shell is separated into three the first space, second space and the 3rd spaces that volume is different by described dividing plate, described inlet end and outlet side are equipped with respectively suction tude and steam outlet pipe, and the surface that described steam outlet pipe stretches into the part of described inner barrel offers exhaust port.
Described the first space, second space and bottom, the 3rd space are respectively equipped with outage.
Described inlet end and outlet side are respectively equipped with air inlet end cap and the end cap of giving vent to anger, described air inlet end cap and outlet side cover and offer respectively air-flow inlet/outlet, and described suction tude and steam outlet pipe are connected on described inlet end and outlet side through described air-flow inlet/outlet respectively.
The inner wall surface of described cylindrical shell is provided with acoustical liner.
Described acoustical liner adopts glass fibre cotton.
The inner wall surface of described acoustical liner and described cylindrical shell is bonding.
The utility model by being provided with two dividing plates in cylindrical shell described in having inlet end and outlet side, the outer rim of described dividing plate is connected with the inner wall sealing of described cylindrical shell, on described dividing plate, offer multiple airflow holes, the inner space of described cylindrical shell is separated into three the first spaces that volume is different by described dividing plate, second space and the 3rd space, described inlet end and outlet side are equipped with respectively suction tude and steam outlet pipe, the surface that described steam outlet pipe stretches into the part of described inner barrel offers exhaust port, thereby can pass through this three spaces and airflow hole, air-flow is sharply strengthened or dwindle variation after through being discharged by outlet pipe, so repeatedly sudden change, make sound wave multiple reflections produce destructive interference, acoustic energy significantly reduces and exhaustion reaches noise elimination object, realize good erasure effect, and simple in structure, cost is low.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the silencing apparatus that the utility model embodiment provides.
Embodiment
Below, in conjunction with example, substantive distinguishing features of the present utility model and advantage are further described, but the utility model is not limited to listed embodiment.
Refer to Fig. 1, a kind of silencing apparatus, comprises cylindrical shell 1, and described cylindrical shell 1 has inlet end 11 and outlet side 12; In described cylindrical shell 1, be provided with two dividing plates 2,3, the outer rim of described dividing plate 2,3 is connected with the inner wall sealing of described cylindrical shell 1, on described dividing plate 2,3, offer multiple airflow holes 4 along circumferential and close outer rim place, the inner space of described cylindrical shell 1 is separated into three the first space 5, second space 6 and the 3rd spaces 7 that volume is different by described dividing plate 2,3, described inlet end 11 and outlet side 12 are equipped with respectively suction tude 13 and steam outlet pipe 14, and the surface that described steam outlet pipe 14 stretches into the part of described cylindrical shell 1 inside offers exhaust port 15.
Preferably, the volume in described the first space 5 is greater than the volume of described second space 6, and the volume in described the 3rd space 7 is greater than the volume of described second space 6.
Further, the volume in described the first space 5 is less than the volume in described the 3rd space 7.
Further, described the 1, second space 6 and 6 bottoms, the 3rd space are respectively equipped with outage (not shown), thereby can effectively the liquid producing be discharged, and prevent cylindrical shell to cause corrosion.
Further, described inlet end 11 and outlet side 12 are respectively equipped with air inlet end cap 8 and the end cap 9 of giving vent to anger, on described air inlet end cap 8 and the end cap 9 of giving vent to anger, offer respectively air-flow inlet/outlet (not shown), described suction tude 13 and steam outlet pipe divide 14 Chuan Guo not be connected on described inlet end 11 and outlet side 12 by described air-flow inlet/outlet.
Described airflow inlet is introduced in described cylindrical shell for the high temperature and high pressure gas that motor car engine is discharged, and behind described dividing plate and three spaces, is discharged by described flow outlet.
Further, inwall 10 surfaces of described cylindrical shell 1 are provided with acoustical liner (not shown).
Further, described acoustical liner adopts glass fibre cotton.
Further, the inner wall surface of described acoustical liner and described cylindrical shell 1 is bonding.
As another embodiment, described dividing plate also can three or four, so just described cylindrical shell can be divided into four or five spaces, equally also can play good soundproof effect.
The utility model by being provided with two dividing plates in cylindrical shell described in having inlet end and outlet side, the outer rim of described dividing plate is connected with the inner wall sealing of described cylindrical shell, on described dividing plate, offer multiple airflow holes, the inner space of described cylindrical shell is separated into three the first spaces that volume is different by described dividing plate, second space and the 3rd space, described inlet end and outlet side are equipped with respectively suction tude and steam outlet pipe, the surface that described steam outlet pipe stretches into the part of described inner barrel offers exhaust port, thereby can pass through this three spaces and airflow hole, air-flow is sharply strengthened or dwindle variation after through being discharged by outlet pipe, so repeatedly sudden change, make sound wave multiple reflections produce destructive interference, acoustic energy significantly reduces and exhaustion reaches noise elimination object, realize good erasure effect, and simple in structure, cost is low.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a silencing apparatus, is characterized in that, comprises cylindrical shell, and described cylindrical shell has inlet end and outlet side; In described cylindrical shell, be provided with two dividing plates, the outer rim of described dividing plate is connected with the inner wall sealing of described cylindrical shell, on described dividing plate, circumferentially offer multiple airflow holes, the inner space of described cylindrical shell is separated into three the first space, second space and the 3rd spaces that volume is different by described dividing plate, described inlet end and outlet side are equipped with respectively suction tude and steam outlet pipe, and the surface that described steam outlet pipe stretches into the part of described inner barrel offers exhaust port.
2. silencing apparatus according to claim 1, is characterized in that, described the first space, second space and bottom, the 3rd space are respectively equipped with outage.
3. silencing apparatus according to claim 2, it is characterized in that, described inlet end and outlet side are respectively equipped with air inlet end cap and the end cap of giving vent to anger, described air inlet end cap and outlet side cover and offer respectively air-flow inlet/outlet, and described suction tude and steam outlet pipe are connected on described inlet end and outlet side through described air-flow inlet/outlet respectively.
4. according to silencing apparatus described in claim 1 or 3, it is characterized in that, the inner wall surface of described cylindrical shell is provided with acoustical liner.
5. silencing apparatus according to claim 4, is characterized in that, described acoustical liner adopts glass fibre cotton.
6. silencing apparatus according to claim 4, is characterized in that, the inner wall surface of described acoustical liner and described cylindrical shell is bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320786863.7U CN203702287U (en) | 2013-12-02 | 2013-12-02 | Muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320786863.7U CN203702287U (en) | 2013-12-02 | 2013-12-02 | Muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702287U true CN203702287U (en) | 2014-07-09 |
Family
ID=51052742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320786863.7U Expired - Fee Related CN203702287U (en) | 2013-12-02 | 2013-12-02 | Muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702287U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725323A (en) * | 2017-09-26 | 2018-02-23 | 台州宝乾机电有限公司 | A kind of muffler and its noise reduction method |
| CN109519646A (en) * | 2018-12-05 | 2019-03-26 | 上海市安装工程集团有限公司 | Apply to the silencer and its manufacturing method of jet chimney gas purging |
| CN110500261A (en) * | 2019-07-26 | 2019-11-26 | 郑州精益达环保科技有限公司 | A kind of hydrogen fuel cell system exhaust silencer |
-
2013
- 2013-12-02 CN CN201320786863.7U patent/CN203702287U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725323A (en) * | 2017-09-26 | 2018-02-23 | 台州宝乾机电有限公司 | A kind of muffler and its noise reduction method |
| CN109519646A (en) * | 2018-12-05 | 2019-03-26 | 上海市安装工程集团有限公司 | Apply to the silencer and its manufacturing method of jet chimney gas purging |
| CN110500261A (en) * | 2019-07-26 | 2019-11-26 | 郑州精益达环保科技有限公司 | A kind of hydrogen fuel cell system exhaust silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |