CN205477832U - Car exhaust muffler's resonance device - Google Patents
Car exhaust muffler's resonance device Download PDFInfo
- Publication number
- CN205477832U CN205477832U CN201620090560.5U CN201620090560U CN205477832U CN 205477832 U CN205477832 U CN 205477832U CN 201620090560 U CN201620090560 U CN 201620090560U CN 205477832 U CN205477832 U CN 205477832U
- Authority
- CN
- China
- Prior art keywords
- perforated pipe
- micropore
- section
- slope section
- resonantron
- 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
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a car exhaust muffler's resonance device belongs to the silencer field, including the perforated pipe, micropore and resonance tube, the cross section of perforated pipe is circular, the lateral surface of perforated pipe is provided with a plurality of rings of micropores equidistantly, every ring of micropore includes the circular micropore of a plurality of along perforated pipe circumference evenly distributed, the crisscross distribution between two rings of adjacent micropores, the resonance tube cover is established on the perforated pipe, resonance tube's length is less than the length of perforated pipe, resonance tube includes slope section and straight section of thick bamboo section, a plurality of ring above -mentioned micropore settings are encircleed to the slope section, and the one end of slope section links firmly with the perforated pipe surface, the other end of slope section is equipped with straight section of thick bamboo section, adopt this technical scheme to make the required volume of silencer resonant cavity little, moreover, the steam generator is simple in structure, wide silencing frequency band, and noise cancelling effect is showing, producing cost is low.
Description
Technical field
This utility model relates to acoustic filter field, more particularly, it relates to the resonance device of a kind of automobile exhaust muffler.
Background technology
Acoustic filter is the device allowing air-flow to pass through developed for stoping sound transmission, is the important measures eliminating air power noise.Dissipative muffler and reactive muffler are the two important class acoustic filters in acoustic filter.
Dissipative muffler reduces noise mainly by sound-absorbing porous material.By sound-absorbing material being fixed on the inwall of gas channel or arranging in the duct according to certain way, just constitute dissipative muffler.When sound wave enters dissipative muffler, a part of acoustic energy rubs in the hole of porous material and changes into thermal energy consumption and dissipate, makes the sound wave by acoustic filter weaken.Dissipative muffler is good to medium-high frequency soundproof effect, poor to low frequency soundproof effect.Reactive muffler is the pipe by abrupt interface and chamber combine, and the chamber of each band pipe has the natural frequency of oneself.When the sound wave including various frequency content enters first short tube, the only sound wave of some frequency near first chamber natural frequency could pass through and arrive second short tube mouth, and the sound wave of other frequency then can not pass through.Can only roundtrip in the chamber, reactive muffler is be applicable to eliminating, low-frequency noise, and poor to the soundproof effect of high-frequency noise.
Exhaust noise is one of car load Main Noise Sources, and along with the requirement of car load NVH performance is improved by people, the control to exhaust noise also becomes more and more important, and people are the major criterion positioning this car to the impression of the idle noise of vehicle.But idle noise medium and low frequency composition often accounts for mastery reaction, if there being a good low-frequency resonance acoustic filter, the idle noise in aerofluxus will have big reduction, and the location of car also has a qualitative leap.But the most general helmholtz resonance chamber has noise elimination necessary volume big, and noise elimination frequency band is narrow, and the shortcoming that near resonant frequency, sound deadening capacity is low.Simultaneously as space, chassis limits, the most also make helmholtz resonance chamber is designed with a lot of limitation.Additionally the appropriate design of the perforated pipe in acoustic filter can also improve the performance of acoustic filter, is effectively reduced wide band noise, improves acoustic filter sound deadening capacity.
Through retrieval, Chinese Patent Application No.: 2013203641145, the applying date: on June 24th, 2013, invention and created name is: a kind of impedance shape acoustic filter, and this application case discloses a kind of impedance shape acoustic filter, including at least one dividing plate, at least one air inlet pipe, at least one escape pipe, high-temperature resistant sound absorption material, upper shell and lower house；Dividing plate links together with lower house, and is provided with the circular hole of number with pipe, and the circular hole that air inlet pipe is each passed through described dividing plate with described escape pipe is connected with dividing plate, and air inlet pipe has abrupt interface on the section tubular wall of described escape pipe.This application case passes through structural grouping, the noise-cancelling theory of dissipative muffler and reactive muffler is combined, and then have both acoustic characteristicses concurrently, it is achieved effectively eliminate the purpose of high, medium and low frequency noise, but the acoustic wave filter structure of this application case is complicated, take up room big, manufacturing cost is high.
Utility model content
Utility model to solve the technical problem that
The purpose of this utility model is to overcome the deficiency of the problems such as the necessary volume of the resonant cavity of acoustic filter is big, noise elimination frequency band is narrow, soundproof effect is poor in prior art, the resonance device of a kind of automobile exhaust muffler is provided, the necessary volume of acoustic filter resonant cavity is little, simple in construction, anechoic frequency bandwidth to use the technical program to make, and erasure effect is notable, cost of manufacture is low.
Technical scheme
For reaching above-mentioned purpose, the technical scheme that this utility model provides is:
The resonance device of a kind of automobile exhaust muffler of the present utility model, including perforated pipe and micropore, also include resonantron, the cross section of described perforated pipe is circular, the lateral surface of described perforated pipe is provided with some circle micropores equally spacedly, often circle micropore includes that several, along the equally distributed circular micropore of perforated pipe circumference, are interspersed between two adjacent rings micropore.
Described resonantron is set on perforated pipe, the length of described resonantron is less than the length of perforated pipe, and described resonantron includes slope section and direct tube section, and described slope section is arranged around above-mentioned some circle micropores, and one end of slope section is connected with perforated pipe surface, the other end of slope section is provided with direct tube section.
Further improve as this utility model, a length of 115 ~ 125mm of described resonantron.
Further improving as this utility model, the lateral surface of described perforated pipe is provided with four circle micropores equally spacedly, and often circle micropore includes 15 along the equally distributed circular micropore of perforated pipe circumference.
Further improving as this utility model, a diameter of 3mm of described micropore, the distance between two adjacent rings micropore is 2.0 ~ 3.0mm.
Further improving as this utility model, often on circle micropore, distance between adjacent two micropores is 8.0 ~ 10.0mm.
Further improving as this utility model, described perforated pipe uses SUH409L steel to make.
Further improving as this utility model, the side of described slope section is 15 ° ~ 20 ° with the angle of perforated pipe axis.
Beneficial effect
The technical scheme using this utility model to provide, compared with prior art, has the advantages that
null(1) resonance device of a kind of automobile exhaust muffler of the present utility model，Wherein resonantron includes slope section and direct tube section，Owing to slope section is arranged around some circle micropores，First the noise dissipated by micropore is reflexed on the slope section of resonantron，Owing to the sound wave of different reflection angles constantly reflects in the resonant cavity that slope section inwall and perforated pipe side form，And then acoustic energy is converted into heat energy，Certain angle is had with perforated pipe axis again due to the side of slope section，The density that the sound wave of different reflection angle can be made to carry out reflecting in slope section inwall with the resonant cavity of perforated pipe side composition increases，And then more acoustic energy is converted into heat energy，Thus reach the effect more preferably eliminated the noise，When noise enters direct tube section，The resonant cavity formed along direct tube section inwall and perforated pipe side is constantly eliminated by it，The mutually coordinated Middle and low frequency noise eradicating efficacy made in automobile exhaust by slope section and direct tube section is more significantly，Wherein resonantron manufacture difficulty is low，And resonantron is connected with perforated pipe surface soldered，Processing technique is simple，Low cost.
(2) resonance device of a kind of automobile exhaust muffler of the present utility model, wherein the lateral surface of perforated pipe is provided with some circle micropores equally spacedly, often circle micropore includes that several are along the equally distributed circular micropore of perforated pipe circumference, it is interspersed between two adjacent rings micropore, owing to being interspersed between two adjacent rings micropore, on the one hand the layout density making micropore on perforated pipe is denser, and then make broad frequency band noise enter resonantron by micropore, noise is by constantly reflecting in the resonant cavity that the sidewall of perforated pipe side with resonantron forms, and then acoustic energy is converted into heat energy, finally play good erasure effect；On the other hand the micropore being interspersed is when it arranges dense, and between adjacent cells, processing and manufacturing is the most unaffected, reduces processing and manufacturing difficulty simultaneously, improves productivity ratio.
(3) resonance device of a kind of automobile exhaust muffler of the present utility model, reasonable in design, principle is simple, it is simple to promote the use of.
Accompanying drawing explanation
Fig. 1 is the resonance device sectional view along axis of a kind of automobile exhaust muffler of the present utility model；
Fig. 2 is the left view of the resonance device of a kind of automobile exhaust muffler of the present utility model；
Fig. 3 be in this utility model resonantron along the sectional view of axis；
Fig. 4 is the expanded view of this utility model middle punch pipe.
Label declaration in accompanying drawing:
1, perforated pipe；2, resonantron；21, slope section；22, direct tube section；3, micropore.
Detailed description of the invention
For further appreciating that content of the present utility model, in conjunction with drawings and Examples, this utility model is described in detail.
Embodiment
1
nullIn conjunction with Fig. 1、Fig. 2、Fig. 3 and Fig. 4，A kind of resonance device of the automobile exhaust muffler of the present embodiment，Including perforated pipe 1 and micropore 3，Also include resonantron 2，Perforated pipe 1 uses SUH409L steel to make，The cross section of perforated pipe 1 is circular，The lateral surface of perforated pipe 1 is provided with some circle micropores 3 equally spacedly，Often circle micropore 3 includes that several are along the equally distributed circular micropore 3 of perforated pipe 1 circumference，It is interspersed between two adjacent rings micropore 3，The lateral surface of the present embodiment middle punch pipe 1 is provided with four circle micropores 3 equally spacedly，Often circle micropore 3 includes 15 along the equally distributed circular micropore 3 of perforated pipe 1 circumference，The lateral surface of the present embodiment middle punch pipe 1 is provided with four circle micropores 3 equally spacedly，It is interspersed between two adjacent rings micropore 3，The most as shown in Figure 4，Perforated pipe 1 is launched along a certain bar bus of its side，Direction, axis along perforated pipe 1，The arrangement of four circle micropores 3 is divided into two groups，Wherein，First group of every 2 micropore 3 is linked to be and a row of perforated pipe 1 axis parallel，Second group is also that every 2 micropores 3 are linked to be and a row of perforated pipe 1 axis parallel，And the micropore 3 of second group all micropore with first group 3 is staggered is spaced.A diameter of 3mm of micropore 3, distance between two adjacent rings micropore 3 is 2.0 ~ 3.0mm, in the present embodiment, the distance between two adjacent rings micropore 3 is specially 2.5mm, often on circle micropore 3, distance between adjacent two micropores 3 is 8.0 ~ 10.0mm, and the distance often enclosed in the present embodiment on micropore 3 between adjacent two micropores 3 is specially 9.0mm.
Resonantron 2 is set on perforated pipe 1, a length of 115 ~ the 125mm of resonantron 2, in the present embodiment, the length of resonantron 2 is specially 120mm, the length of resonantron 2 is less than the length of perforated pipe 1, resonantron 2 includes slope section 21 and direct tube section 22, slope section 21 is arranged around some circle micropores 3, and one end of slope section 21 is connected with perforated pipe 1 surface, the other end of slope section 21 is provided with direct tube section 22, the side of slope section 21 is 15 ° ~ 20 ° with the angle of perforated pipe 1 axis, and in concrete the present embodiment, the side of slope section 21 is 18 ° with the angle of perforated pipe 1 axis.The lateral surface of the present embodiment middle punch pipe 1 is provided with four circle micropores 3 equally spacedly, it is interspersed between two adjacent rings micropore 3, distance between two adjacent rings micropore 3 is 2.5mm, often on circle micropore 3, distance between adjacent two micropores 3 is specially 9.0mm, the a length of 120mm of resonantron 2, the side of slope section 21 is 18 ° with the angle of perforated pipe 1 axis, by the set-up mode of micropore 3 on perforated pipe 1, the parameter of micropore 3 is arranged, the parameter of resonantron 2 is arranged and the fit system etc. of perforated pipe 1 and resonantron 2, each parametric interaction affects, the resonance device making automobile exhaust muffler eliminates the better of noise, elimination noise band is wider.
The resonance device of the automobile exhaust muffler of the present embodiment, including perforated pipe 1, micropore 3 and resonantron 2, resonantron 2 includes slope section 21 and direct tube section 22, use the resonantron 2 of circular cross-section and the resonant cavity coordinating the resonance device as automobile exhaust muffler of perforated pipe 1, overcome in prior art automobile exhaust muffler resonant cavity necessary volume big, affect automobile chassis space and series of problems is set etc..Wherein, compared with prior art, after using the resonance device of automobile exhaust muffler of the present embodiment, along with the volume of resonant cavity reduces, the material of resonantron 2 is also greatly reduced, thus production cost obtains a certain degree of reduction.
The lateral surface of the present embodiment middle punch pipe 1 is provided with some circle micropores 3 equally spacedly, often circle micropore 3 includes that several are along the equally distributed circular micropore 3 of perforated pipe 1 circumference, it is interspersed between two adjacent rings micropore 3, owing to being interspersed between two adjacent rings micropore 3, on the one hand the layout density making micropore 3 on perforated pipe 1 is denser, and then make broad frequency band noise enter resonantron 2 by micropore 3, noise is by constantly reflecting in the resonant cavity that the sidewall of perforated pipe 1 side with resonantron 2 forms, and then acoustic energy is converted into heat energy, finally play good erasure effect；On the other hand the micropore 3 being interspersed is when it arranges dense, and between adjacent cells 3, processing and manufacturing is the most unaffected, reduces processing and manufacturing difficulty simultaneously, improves productivity ratio.
nullIn the present embodiment, resonantron 2 includes slope section 21 and direct tube section 22，Owing to slope section 21 is arranged around some circle micropores 3，First the noise dissipated by micropore 3 is reflexed on the slope section 21 of resonantron 2，Owing to the sound wave of different reflection angles successively reflects in the resonant cavity that slope section 21 inwall and perforated pipe 1 side form，And then acoustic energy is converted into heat energy，Owing to the side of slope section 21 and the angle of perforated pipe 1 axis are 18 °，The density that the sound wave of different reflection angle can be made to carry out reflecting in slope section 21 inwall with the resonant cavity of perforated pipe 1 side composition increases，And then more acoustic energy is converted into heat energy，Thus reach the effect more preferably eliminated the noise，When noise enters direct tube section 22，The resonant cavity formed along direct tube section 22 inwall and perforated pipe 1 side is constantly eliminated by it，Noise cancellation effect by slope section 21 and the mutually coordinated medium and low frequency made in automobile exhaust of direct tube section 22 is more significantly，Wherein resonantron 2 manufacture difficulty is low，And resonantron 2 is connected with perforated pipe 1 surface soldered，Processing technique is simple，Low cost.
Embodiment
2
A kind of resonance device of the automobile exhaust muffler of the present embodiment, its basic structure is same as in Example 1, its difference is: in the present embodiment, the distance between two adjacent rings micropore 3 is 3.0mm, often on circle micropore 3, the spacing of adjacent two micropores 3 is 10.0mm, the length of resonantron 2 is specially 125mm, and the side of slope section 21 is 15 ° with the angle of perforated pipe 1 axis.
Embodiment
3
A kind of resonance device of the automobile exhaust muffler of the present embodiment, its basic structure is same as in Example 1, its difference is: in the present embodiment, the distance between two adjacent rings micropore 3 is 2.0mm, often on circle micropore 3, the spacing of adjacent two micropores 3 is 8.0mm, the length of resonantron 2 is specially 115mm, and the side of slope section 21 is 20 ° with the angle of perforated pipe 1 axis.
Schematically being described this utility model and embodiment thereof above, this description does not has restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited thereto.So, if those of ordinary skill in the art is enlightened by it, in the case of creating objective without departing from this utility model, design the frame mode similar to this technical scheme and embodiment without creative, protection domain of the present utility model all should be belonged to.
Claims (7)
1. the resonance device of an automobile exhaust muffler, including perforated pipe (1) and micropore (3), it is characterized in that, also include resonantron (2), the cross section of described perforated pipe (1) is circular, the lateral surface of described perforated pipe (1) is provided with some circle micropores (3) equally spacedly, often enclose micropore (3) include several along the equally distributed circular micropore (3) of perforated pipe (1) circumference, two adjacent rings micropore is interspersed between (3)；
Described resonantron (2) is set on perforated pipe (1), the length of described resonantron (2) is less than the length of perforated pipe (1), described resonantron (2) includes slope section (21) and direct tube section (22), described slope section (21) is arranged around above-mentioned some circle micropores (3), and one end of slope section (21) is connected with perforated pipe (1) surface, the other end of slope section (21) is provided with direct tube section (22).
The resonance device of a kind of automobile exhaust muffler the most according to claim 1, it is characterised in that: a length of 115 ~ 125mm of described resonantron (2).
The resonance device of a kind of automobile exhaust muffler the most according to claim 1, it is characterized in that: the lateral surface of described perforated pipe (1) is provided with four circle micropores (3) equally spacedly, often enclose micropore (3) and include 15 along the equally distributed circular micropore (3) of perforated pipe (1) circumference.
The resonance device of a kind of automobile exhaust muffler the most according to claim 3, it is characterised in that: a diameter of 3mm of described micropore (3), the distance between two adjacent rings micropore (3) is 2.0 ~ 3.0mm.
The resonance device of a kind of automobile exhaust muffler the most according to claim 3, it is characterised in that: the distance often enclosed between upper adjacent two micropores (3) of micropore (3) is 8.0 ~ 10.0mm.
The resonance device of a kind of automobile exhaust muffler the most according to claim 1, it is characterised in that: described perforated pipe (1) uses SUH409L steel to make.
7. according to the resonance device of a kind of automobile exhaust muffler described in claim 1 or 4, it is characterised in that: the side of described slope section (21) is 15 ° ~ 20 ° with the angle of perforated pipe (1) axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620090560.5U CN205477832U (en) | 2016-01-29 | 2016-01-29 | Car exhaust muffler's resonance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620090560.5U CN205477832U (en) | 2016-01-29 | 2016-01-29 | Car exhaust muffler's resonance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477832U true CN205477832U (en) | 2016-08-17 |
Family
ID=56620415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620090560.5U Active CN205477832U (en) | 2016-01-29 | 2016-01-29 | Car exhaust muffler's resonance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205477832U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625928A (en) * | 2018-06-14 | 2018-10-09 | 东风小康汽车有限公司重庆分公司 | A kind of muffler and automobile |
| CN110080855A (en) * | 2018-01-26 | 2019-08-02 | 双叶产业株式会社 | Muffler |
| CN112193013A (en) * | 2020-09-04 | 2021-01-08 | 恒大新能源汽车投资控股集团有限公司 | Air duct for vehicle air conditioner, vehicle air conditioner and motor vehicle |
-
2016
- 2016-01-29 CN CN201620090560.5U patent/CN205477832U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080855A (en) * | 2018-01-26 | 2019-08-02 | 双叶产业株式会社 | Muffler |
| CN110080855B (en) * | 2018-01-26 | 2021-10-01 | 双叶产业株式会社 | Silencer with improved structure |
| CN108625928A (en) * | 2018-06-14 | 2018-10-09 | 东风小康汽车有限公司重庆分公司 | A kind of muffler and automobile |
| CN112193013A (en) * | 2020-09-04 | 2021-01-08 | 恒大新能源汽车投资控股集团有限公司 | Air duct for vehicle air conditioner, vehicle air conditioner and motor vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201474756U (en) | Single-row gas pipe muffler for diesel generator | |
| CN202789016U (en) | Engine exhaust silencer | |
| CN205477832U (en) | Car exhaust muffler's resonance device | |
| CN201714459U (en) | Automobile exhaust silencer | |
| CN104948265A (en) | Impedance compound muffler | |
| CN106014545A (en) | Novel silencer for engine | |
| CN205559018U (en) | Vehicle vent -pipe muffler | |
| CN201218126Y (en) | Engine exhaust wide-band silencer | |
| CN204703984U (en) | Impedance composite muffler | |
| CN206249887U (en) | A kind of good muffler of erasure effect | |
| CN202047880U (en) | Novel impedance composite silencer | |
| CN203257752U (en) | Centrifugal noise elimination draught fan shell | |
| CN206487543U (en) | A kind of diesel-driven generator exhaust silencer system | |
| CN109555586A (en) | Exhaust silencer | |
| CN203867664U (en) | Carbon deposition prevention silencer | |
| CN203925669U (en) | A kind of exhaust silencer for urban small automobile | |
| CN206471117U (en) | A kind of vortex type silencer | |
| CN201461035U (en) | Impedance compound exhaust muffler used for tractor | |
| CN201521328U (en) | Dual-exhaust port silencer of diesel generator | |
| CN205260178U (en) | Porous wide band silencer of screw -tupe | |
| CN2549183Y (en) | Three chamber exhaust silencer of engine | |
| CN203835510U (en) | Perforated pipe for double-rowed air cylinder silencer | |
| CN202273729U (en) | Multidirectional resonance type silencer for internal combustion engines | |
| CN203847220U (en) | Exhaust silencer used for engineering truck | |
| CN203867662U (en) | Multi-tube silencer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190719 Address after: Room 808, 275-8 Guoding East Road, Yangpu District, Shanghai 200082-01 Patentee after: Shanghai Punbao Group Co., Ltd. Address before: No. 59 Fuqiang Road, Qiujiang Development Zone, Wuhu City, Anhui Province, 241000 Patentee before: Wuhu Hengyao Automobile Auto Spare Parts Co., Ltd. |