CN102011628B - Car silencer and barrel thereof - Google Patents
Car silencer and barrel thereof Download PDFInfo
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- CN102011628B CN102011628B CN201010615288A CN201010615288A CN102011628B CN 102011628 B CN102011628 B CN 102011628B CN 201010615288 A CN201010615288 A CN 201010615288A CN 201010615288 A CN201010615288 A CN 201010615288A CN 102011628 B CN102011628 B CN 102011628B
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- vibration isolation
- isolation element
- end cap
- cylindrical shell
- pipe
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Abstract
The invention discloses a barrel for a car silencer, comprising a shell (1) and a vibration isolation element (4), wherein the inner part of the shell (1) is provided with an inner tube (2), and the two ends of the shell (1) are respectively provided with an end cover (3) which is provided with an opening; at least one end of the inner tube (2) is installed on the corresponding opening of the end cover (3) through the vibration isolation element (4), and the relative position between the part of connecting the vibration isolation element (4) and the inner tube (2) and the end cover (3) is variable along the axial direction of the inner tube (2). Through the automatic adjustment of the inner tube length in the axial direction of the inner tube, thermal stress is released, and thermal stress action does not exist between the inner tube and the end cover, thereby avoiding fatigue failure of the inner tube and the end cover under the action of the thermal stress so that the barrel has long service life so as to prolong the service life of the car silencer. The invention also provides the car silencer comprising the barrel.
Description
Technical field
The present invention relates to automobile noise reduction technical field, particularly a kind of cylindrical shell that is used for automotive muffler.The invention still further relates to a kind of automotive muffler that comprises above-mentioned cylindrical shell.
Background technique
Automobile noise is mainly from the automobile exhaust noise.If do not add silencing apparatus, noise can reach more than 100 decibels, in vent systems, adds silencing apparatus, and the automobile exhaust noise is reduced to about 70 decibels, and therefore, silencing apparatus is the important component part of automobile exhaust system.
Automotive muffler is mainly the cartridge type silencing apparatus; Mostly the cartridge type silencing apparatus is resistance or impedance complex formula silencing apparatus; Cylindrical shell is the important component part of cartridge type silencing apparatus, and cylindrical shell comprises the shell that it is outside and the interior pipe of enclosure, the shell of cylindrical shell through welded and installed on the outlet pipe of automobile.In the diameter of pipe less than the diameter of shell, and offer some resonance hole on the interior pipe, the cavity between interior pipe and the shell forms expansion chamber; When the high-temp waste gas of engine producing with at a high speed when outlet pipe gets into cylindrical shell; Air-flow at first gets into interior pipe, then gets into the expansion chamber that is formed by interior pipe and shell through the resonance hole, makes air-flow through the resonance hole time, be compressed suddenly and forms some threads; Then in expansion chamber, be able to again expand; So repeatedly sudden change, acoustic energy is significantly decayed, thereby has played the effect that reduces noise.
For the auxiliary noise elimination cylindrical shell that only is used to reduce a certain frequency range noise, this cylindrical shell generally has a cavity configuration.Enclosure is provided with in one pipe, offers some resonance hole on the interior pipe, and the two ends of shell are welded with end cap, and interior pipe two ends are welded on the two end cap, with in the enclosure fixing of pipe in realizing.
But in the working procedure of cartridge type silencing apparatus, high temperature gas flow is passed through in the inside of cylindrical shell; Because of interior Guan Huixian contact and contact whole high temperature gas flows, and behind the shell contact and only contact pass the air-flow behind the resonance hole, therefore; In pipe inconsistent with the temperature rise of shell, the temperature of interior pipe is high more a lot of than the temperature rise amplitude of shell, manage in causing and expansion (contraction) rate of shell inconsistent; Thereby pipe and end cap receive the effect of bigger thermal stress in causing when expanding; The generation fatigue fracture under thermal stress and vibration of pipe or end cap was lost efficacy in making, had had a strong impact on the working life of cylindrical shell, and then had reduced the working life of automotive muffler.
Therefore, pipe and end cap produce fatigue failure in how avoiding under the effect of thermal stress, thereby prolong the working life of cylindrical shell and automotive muffler, just become the problem that those skilled in the art need solve.
Summary of the invention
The purpose of this invention is to provide a kind of cylindrical shell that is used for automotive muffler, fatigue failure can not take place in pipe and end cap in it under the effect of thermal stress, has long working life.Another object of the present invention provides a kind of automotive muffler that comprises above-mentioned cylindrical shell, and it has long working life.
For solving the problems of the technologies described above, the present invention provides a kind of cylindrical shell that is used for automotive muffler, comprises shell, and the set inside of said shell has interior pipe, and the two ends of said shell are provided with end cap, and said end cap is provided with opening; Also comprise vibration isolation element and adapter; At least one end of pipe is installed on the opening of corresponding said end cap through said vibration isolation element in said, said vibration isolation element with said in the part that is connected of pipe manage in said axial on variable with the relative position of said end cap; One end of said adapter is installed on the opening of said end cap, and its other end is equipped with said vibration isolation element, and is connected with said interior pipe through said vibration isolation element.
Preferably, said vibration isolation element is installed between the outer ring and said interior inner ring of managing of said adapter.
Preferably, said vibration isolation element comprises along the several layers steel wire of said interior tubular axis to layout having predetermined gap between the said steel wire of each layer.
Preferably, said vibration isolation element is along one week of extending circumferentially of said interior pipe.
Preferably, said vibration isolation element is the arcuate structure of fitting with the tube wall of said interior pipe.
Preferably, the number of said vibration isolation element is a plurality of, and each said vibration isolation element is along the circumferential setting of said interior pipe.
Preferably, each said vibration isolation element circumferentially evenly being provided with along said interior pipe.
Preferably, said vibration isolation element and said adapter welding.
The present invention also provides a kind of automotive muffler, comprises the cylindrical shell that is used to be connected in the connected element of automobile exhaust pipe and is installed on said connected element outer end, and said cylindrical shell is as above-mentioned each described cylindrical shell.
The cylindrical shell that is used for automotive muffler provided by the present invention comprises shell, and the set inside of said shell has interior pipe, and the two ends of said shell are provided with end cap, and said end cap is provided with opening; Also comprise along vibration isolation element, said at least one end of pipe be installed on the opening of corresponding said end cap through said vibration isolation element, said vibration isolation element with said in the part that is connected of pipe manage in said axial on variable with the relative position of said end cap; Like this, in the working procedure of automotive muffler, the temperature rise of the interior pipe temperature rise ratio shell of its cylindrical shell; The expansion of interior pipe is fast than shell, and owing to the variable-length that interior tubular axis makes progress on the edge of the vibration isolation element between end cap and the interior pipe, on vibration isolation element, slides behind the then interior tube swelling; Move on the length direction of interior pipe with respect to end cap, vibration isolation element, adapter; Thereby compensated the relative displacement between interior pipe and the end cap, the automatic adjusting through the length of interior Guan Zaiqi on has axially discharged thermal stress; There is not the effect of thermal stress between interior pipe and the end cap; Thereby avoided interior pipe and end cap can fatigue failure not take place under the effect of thermal stress, made cylindrical shell have long working life, and then prolonged the working life of automotive muffler.
A kind of preferred embodiment in; The cylindrical shell that is used for automotive muffler provided by the present invention also comprises adapter; One end of said adapter is installed on the opening of said end cap, and its other end is equipped with said vibration isolation element, and is connected with said interior pipe through said vibration isolation element; Like this; Through taking over interior pipe is connected with end cap, has improved connection reliability, and avoided interior pipe from the opening of end cap, to pass; That has avoided end cap and interior pipe directly is connected the interference that the end cap that causes and interior length of tube change, and has improved the reliability that interior length of tube is regulated.
In another preferred embodiment, vibration isolation element provided by the present invention comprises along the several layers steel wire of said interior tubular axis to layout having predetermined gap between the said steel wire of each layer; Like this, through the variation in the gap between each layer steel wire with space, the length adjustment of pipe in realizing, structure is comparatively simple, and cost of production is lower.
Description of drawings
Fig. 1 is the structural representation that is used for a kind of embodiment of cylindrical shell of automotive muffler provided by the present invention.
Embodiment
Core of the present invention provides a kind of cylindrical shell that is used for automotive muffler, and pipe and end cap can fatigue failure not take place under the effect of thermal stress in it, has long working life.Another core of the present invention provides a kind of automotive muffler that comprises above-mentioned cylindrical shell, and it has long working life.
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please refer to Fig. 1, Fig. 1 is the structural representation that is used for a kind of embodiment of cylindrical shell of automotive muffler provided by the present invention.
In a kind of embodiment, cylindrical shell provided by the present invention is used for automotive muffler, and especially for the single chamber silencing apparatus in the automotive muffler, single chamber silencing apparatus is meant that barrel do not have dividing plate and separate, and has only the silencing apparatus of a cavity.This cylindrical shell comprises shell 1, interior pipe 2 and end cap, and wherein shell 1 is a tubular structure, and interior pipe 2 is arranged on the inside of shell 1; The outer ring of pipe 2 in shell 1 is sleeved on; And shell 1 axially coincides with interior pipe 2, and the outer end of shell 1 is provided with end cap, and end cap is provided with opening; In pipe 2 diameter less than the diameter of shell 1, and offer some resonance hole 21 on the interior pipe 2, the cavity formation expansion chamber between interior pipe 2 and the shell 1; The high-temp waste gas that produces when transmitter is with at a high speed when outlet pipe gets into cylindrical shell; Pipe 2 in air-flow at first gets into then gets into by interior pipe 2 and the expansion chamber that shell 1 forms through resonance hole 21, makes air-flow through resonance hole 21 time, be compressed suddenly and forms some threads; Then in expansion chamber, be able to again expand; So repeatedly sudden change, acoustic energy is significantly decayed, thereby has played the effect that reduces noise; This cylindrical shell also comprises vibration isolation element 4, said in pipe 2 be installed on the opening of the end cap of outer end through vibration isolation element 4, the part that vibration isolation element 4 is connected with interior pipe 2 is variable with the relative position of end cap on the interior pipe 2 in edge axial.
Shell 1 not only is provided with end cap in its outer end; Its inner is provided with end cap too; Also offer opening on the right-hand member end cap, interior pipe 2 can only be connected through vibration isolation element 4 with end cap with its outer end, at this moment; The inner plug-in mounting of interior pipe 2 also is welded in the opening of right-hand member end cap, and the interior pipe 2 of realization is connected with the right-hand member end cap; Interior pipe 2 also is not limited to its outer end and is connected through vibration isolation element 4 with end cap, and it also can be connected through vibration isolation element 4 with corresponding end cap through the inner of interior pipe 2; Interior pipe 2 also can both can be connected through vibration isolation element 4 through its inner and corresponding end cap, passed through its outer end again and was connected through vibration isolation element 4 with corresponding end cap.
Corresponding end cap is meant, is meant inner end cap with the inner corresponding end cap of interior pipe 2, is meant the end cap of outer end with the corresponding end cap in the outer end of interior pipe 2.
Above-mentioned the inner is meant the end near automobile exhaust pipe, just in pipe 2 inlet end, correspondingly, the outer end is meant the end away from automobile exhaust pipe, just in the outlet side of pipe 2.
Like this, in the working procedure of automotive muffler, the temperature rise of the interior pipe 2 temperature rise ratio shells 1 of its cylindrical shell; In pipe 2 expansion fast than shell 1, and since the vibration isolation element 4 between end cap and the interior pipe 2 along the variable-length of interior pipe 2 on axially, then in pipe 2 on vibration isolation element, slide after expanding; Move on the length direction of interior pipe with respect to end cap, vibration isolation element, adapter; Thereby compensated the relative displacement between interior pipe 2 and the end cap, the automatic adjusting through the length of interior pipe 2 on it is axial has discharged thermal stress; There is not the effect of thermal stress between interior pipe 2 and the end cap; Thereby avoided interior pipe 2 can fatigue failure not take place under the effect of thermal stress, made cylindrical shell have long working life, and then prolonged the working life of automotive muffler with end cap.
Can also further improve the cylindrical shell that is used for automotive muffler provided by the present invention.
Cylindrical shell provided by the present invention can also comprise takes over 5, and an end of this adapter 5 is installed in the opening of said end cap, and its other end is equipped with said vibration isolation element 4, and is connected with interior pipe 2 through said vibration isolation element 4; Like this; Through taking over 5 interior pipe 2 is connected with end cap, improved connection reliability, and avoided interior pipe 2 from the opening of end cap, to pass; That has avoided end cap and interior pipe 2 directly is connected the end cap that causes and the interference of interior pipe 2 length change, has improved the reliability of interior pipe 2 length adjustment.
Taking over 5 one section external diameters near interior pipe 2 can also can make the external diameter everywhere of adapter 5 equate less than the external diameter of taking over 5 other positions.
Vibration isolation element 4 can be installed on said adapter 5 the outer ring and said between pipe 2 the inner ring, so that simplify the mounting process performance of vibration isolation element 4.Apparently, when taking over 5 internal diameter, in vibration isolation element 4 also can be installed between the inner ring of the outer ring of pipe 2 and adapter 5 greater than the external diameter of interior pipe 2.
In a kind of embodiment, vibration isolation element 4 provided by the present invention can comprise the several layers steel wire, and each layer steel wire is axial arranged along said interior pipe 2, has predetermined gap between the said steel wire of each layer; Like this, through the variation in the gap between each layer steel wire with space, the length adjustment of pipe 2 in realizing, structure is comparatively simple, and cost of production is lower.
Vibration isolation element 4 can be along one week of extending circumferentially of said interior pipe 2, so that improve its vibration isolating effect.
Vibration isolation element 4 also was not limited to along one week of extending circumferentially, and it also can be for the arcuate structure of fitting with the tube wall of interior pipe 2, so that simplify the structure of vibration isolation element 4.
The number of vibration isolation element 4 can be for a plurality of, and the circumferential setting of each said vibration isolation element 4 pipe 2 in said, so that guarantee the anti-vibration performance of vibration isolation element 4.
Each vibration isolation element 4 circumferentially evenly is provided with along said interior pipe 2, so that make the even vibration isolation of vibration isolation element 4 realizations, further improves the anti-vibration performance of vibration isolation element 4.
Can realize vibration isolation element 4 and adapter 5 fixedly connected by the mode of welding, this welding manner can be specially the mode of resistance spot welding.
The installation process of cylindrical shell provided by the present invention can for: at first will take over 5 and fix through resistance spot welding welding with the vibration isolation circle; To take over 5 then and manage 2 assemblies in being assembled into the weld assembly of vibration isolation circle and interior pipe 2; Then interior pipe 2 assemblies one end is inserted one of them end cap, the other end inserts another end cap after passing housing; At last two ends end cap and shell 1 are welded in one.Above-mentioned installation process is merely a kind of concrete mode of execution, as long as can realize the smooth installation of each component of cylindrical shell, its installation process is not done qualification.
Vibration isolation element 4 also is not limited to the form of above-mentioned multilayer steel wire; As long as its part that can realize that vibration isolation element 4 is connected with end cap is motionless, and the part that is connected with interior pipe 2 can move with respect to end cap on the length direction of interior pipe 2, thereby the automatic adjusting of pipe 2 length gets final product in realizing; The concrete form of vibration isolation element 4 should not receive the restriction of this specification embodiment; Particularly, this vibration isolation element 4 can also comprise slideway that is installed on the interior pipe 2 and the slide block that is installed in the adapter 5, and slide block matches with slideway; When the length of interior pipe 2 changes; Slide block moves in slideway, thereby has realized the variation of interior pipe 2 length, and pipe 2 and adapter 5 is connected in can guaranteeing simultaneously.
Except above-mentioned cylindrical shell, the present invention also provides a kind of automotive muffler that comprises above-mentioned cylindrical shell, and other each several part structures of this automotive muffler please refer to existing technology, repeat no more at this.
More than a kind of automotive muffler provided by the present invention and cylindrical shell thereof have been carried out detailed introduction.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. a cylindrical shell that is used for automotive muffler comprises shell (1), and the set inside of said shell (1) has interior pipe (2), and the two ends of said shell (1) are provided with end cap (3), and said end cap (3) is provided with opening; It is characterized in that; Also comprise vibration isolation element (4) and take over (5); At least one end of pipe (2) is installed on the opening of corresponding said end cap (3) through said vibration isolation element (4) in said, said vibration isolation element (4) with said in the part that is connected of pipe (2) variable at the relative position upward axial and said end cap (3) of managing (2) in said; One end of said adapter is installed on the opening of said end cap (3), and its other end is equipped with said vibration isolation element (4), and is connected with said interior pipe (2) through said vibration isolation element (4).
2. the cylindrical shell that is used for automotive muffler according to claim 1 is characterized in that, said vibration isolation element (4) be installed on said adapter the outer ring and said in the pipe (2) inner ring between.
3. according to claim 1 or 2 each described cylindrical shells that are used for automotive muffler, it is characterized in that said vibration isolation element (4) comprises in said manages (2) axial arranged several layers steel wire, has predetermined gap between the said steel wire of each layer.
4. the cylindrical shell that is used for automotive muffler according to claim 3 is characterized in that, said vibration isolation element (4) is along one week of extending circumferentially of said interior pipe (2).
5. the cylindrical shell that is used for automotive muffler according to claim 3 is characterized in that, said vibration isolation element (4) is the arcuate structure of fitting with the tube wall of said interior pipe (2).
6. the cylindrical shell that is used for automotive muffler according to claim 5 is characterized in that, the number of said vibration isolation element (4) is a plurality of, and each said vibration isolation element (4) is along the circumferential setting of said interior pipe (2).
7. the cylindrical shell that is used for automotive muffler according to claim 6 is characterized in that, each said vibration isolation element (4) is managed circumferentially evenly being provided with of (2) in said.
8. according to claim 1 or 2 each described cylindrical shells that are used for automotive muffler, it is characterized in that said vibration isolation element (4) and said adapter (5) welding.
9. an automotive muffler comprises the cylindrical shell that is used to be connected in the connected element of automobile exhaust pipe and is installed on said connected element outer end, it is characterized in that, said cylindrical shell is like each described cylindrical shell of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010615288A CN102011628B (en) | 2010-12-30 | 2010-12-30 | Car silencer and barrel thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010615288A CN102011628B (en) | 2010-12-30 | 2010-12-30 | Car silencer and barrel thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102011628A CN102011628A (en) | 2011-04-13 |
| CN102011628B true CN102011628B (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010615288A Active CN102011628B (en) | 2010-12-30 | 2010-12-30 | Car silencer and barrel thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN102011628B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291432B (en) * | 2012-12-24 | 2015-09-02 | 湖南吉利汽车部件有限公司 | A kind of exhaust pipe structure eliminating welding stress |
| CN104564241A (en) * | 2015-01-23 | 2015-04-29 | 安徽江淮汽车股份有限公司 | Exhaust muffler |
| CN105402005A (en) * | 2015-12-18 | 2016-03-16 | 力帆实业(集团)股份有限公司 | Gas exhausting system and pre-muffler thereof |
| CN110821602A (en) * | 2019-11-11 | 2020-02-21 | 西安航天动力研究所 | A tubular muffler |
| CN110985164B (en) * | 2019-11-19 | 2023-05-26 | 华侨大学 | A vibration-reducing and heat-insulating muffler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668862Y (en) * | 2003-09-10 | 2005-01-05 | 马恩强 | Corrugated pipe shock-avoiding impedance composite silencer |
| CN101033703A (en) * | 2006-03-08 | 2007-09-12 | J.埃贝斯佩歇合资公司 | Component of an exhaust system |
| CN201284682Y (en) * | 2008-10-17 | 2009-08-05 | 奇瑞汽车股份有限公司 | Silencer structure |
| CN201916030U (en) * | 2010-12-30 | 2011-08-03 | 柳州五菱汽车有限责任公司 | Automobile muffler and barrel body thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10337A (en) * | 1996-06-19 | 1998-01-06 | Nippon Steel Corp | Metal catalytic converter and method of manufacturing the same |
| JP2002266623A (en) * | 2001-03-09 | 2002-09-18 | Futaba Industrial Co Ltd | Muffler for internal combustion engine |
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2010
- 2010-12-30 CN CN201010615288A patent/CN102011628B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2668862Y (en) * | 2003-09-10 | 2005-01-05 | 马恩强 | Corrugated pipe shock-avoiding impedance composite silencer |
| CN101033703A (en) * | 2006-03-08 | 2007-09-12 | J.埃贝斯佩歇合资公司 | Component of an exhaust system |
| CN201284682Y (en) * | 2008-10-17 | 2009-08-05 | 奇瑞汽车股份有限公司 | Silencer structure |
| CN201916030U (en) * | 2010-12-30 | 2011-08-03 | 柳州五菱汽车有限责任公司 | Automobile muffler and barrel body thereof |
Non-Patent Citations (2)
| Title |
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| JP特开2002-266623A 2002.09.18 |
| JP特开平10-337A 1998.01.06 |
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| CN102011628A (en) | 2011-04-13 |
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Owner name: LIUZHOU WULING MOTORS INDUSTRY CO., LTD. Effective date: 20140928 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140928 Address after: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Patentee after: Liuzhou Wuling Motors Co., Ltd. Patentee after: Liuzhou Wuling Automobile Industry Co., Ltd. Address before: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Patentee before: Liuzhou Wuling Motors Co., Ltd. |
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| C56 | Change in the name or address of the patentee |
Owner name: GUANGXI PROVINCE AUTOMOBILE GROUP CO., LTD. Free format text: FORMER NAME: WULING AUTOMOBILE CO., LTD., LIUZHOU |
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| CP01 | Change in the name or title of a patent holder |
Address after: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Patentee after: Guangxi company limited of automobile group Patentee after: Liuzhou Wuling Automobile Industry Co., Ltd. Address before: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Patentee before: Liuzhou Wuling Motors Co., Ltd. Patentee before: Liuzhou Wuling Automobile Industry Co., Ltd. |