CN202273730U - Automobile muffler - Google Patents
Automobile muffler Download PDFInfo
- Publication number
- CN202273730U CN202273730U CN2011203965569U CN201120396556U CN202273730U CN 202273730 U CN202273730 U CN 202273730U CN 2011203965569 U CN2011203965569 U CN 2011203965569U CN 201120396556 U CN201120396556 U CN 201120396556U CN 202273730 U CN202273730 U CN 202273730U
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- China
- Prior art keywords
- expansion chamber
- outlet pipe
- suction tude
- steam outlet
- chamber
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to the field of engine exhaust mufflers, and aims to provide an automobile muffler with excellent muffling effect in low frequency, medium frequency and high frequency. The automobile muffler includes a cylinder body, baffle plates, air inlet pipes and an air outlet pipe, wherein the baffle plates include a left baffle plate and a supporting baffle plate; air current through holes are formed on both the left baffle plate and the supporting baffle plate; the left baffle plate and the supporting baffle plate are fixedly connected with the cylinder body and divide the cylinder body into a left expansion chamber, a resonant chamber and a right expansion chamber from left to right; two air inlet pipes are adopted, one end of one air inlet pipe extends into the left expansion chamber, and one end of the other air inlet pipe extends into the right expansion chamber; and one end of the air outlet pipe is arranged in the resonant chamber, and the other end of the air outlet pipe penetrates the supporting plate and extends out of the cylinder body through the right expansion chamber. The automobile muffler has excellent muffling effect in low frequency, medium frequency and high frequency.
Description
Technical field
The utility model relates to the engine exhaust muffler field, and especially a kind of low frequency, intermediate frequency and high frequency all have the automotive muffler of better noise elimination effect.
Background technique
For eliminating the huge sound that produces when motor is discharged the high temperature and high pressure gas after burning, automobile need be provided with silencing apparatus at the exhaust duct place; Silencing apparatus can be divided into three types of reactive muffler, resistive automotive muffler and impedance composite mufflers by noise-cancelling theory; Dissipative muffler absorbs acoustic energy through filling sucting sound material in exhaust duct and reaches the noise elimination order; Reactive muffler is in silencing apparatus inside the sectional area of pipeline sharply to be strengthened or dwindles in a certain length part, makes sound wave when propagating, produce reflection and destructive interference reaches the noise elimination purpose; Reactive muffler is better in low frequency, intermediate frequency noise elimination effect; Improve high frequency noise elimination effect, can adopt the sectional area of pipeline to have reactive muffler or the impedance complex formula silencing apparatus that repeatedly sharply strengthens or dwindle variation; The model utility of Chinese patent notification number CN2668860Y discloses a kind of automotive muffler, is made up of outer tube and drop-leg, and the inlet end of outer tube and outlet side are respectively arranged with the air inlet end cap and give vent to anger end cap; Be provided with the air inlet ending cover hole in the air inlet end cap, be provided with the ending cover hole of giving vent to anger in the end cap of giving vent to anger, the outer tube set inside has dividing plate; The periphery of dividing plate is fixedly connected with the inwall of outer tube; Dividing plate is provided with drop-leg, and drop-leg and dividing plate are fixed, and the inlet end of drop-leg exports in the air inlet ending cover hole; The outlet side of drop-leg exports in the ending cover hole of giving vent to anger, and is provided with an outage in the bottom of give vent to anger end cap and dividing plate.This automotive muffler is a reactive muffler, has only an inlet end, and the sectional area of drop-leg and each chamber is with low uncertainty; This automotive muffler exists noise elimination effect, the particularly relatively poor deficiency of high frequency noise elimination effect; Therefore, design the automotive muffler that a kind of low frequency, intermediate frequency and high frequency all have better noise elimination effect, become problem demanding prompt solution.
Summary of the invention
The purpose of the utility model is to have noise elimination effect, the particularly relatively poor deficiency of high frequency noise elimination effect in order to overcome present automotive muffler, provides a kind of low frequency, intermediate frequency and high frequency that the automotive muffler of better noise elimination effect is all arranged.
The concrete technological scheme of the utility model is:
A kind of automotive muffler comprises cylindrical shell, dividing plate, suction tude and steam outlet pipe; Described dividing plate comprises left clapboard and supported diaphragm; Described left clapboard and supported diaphragm are equipped with the air-flow through hole; Left clapboard is fixedly connected with cylindrical shell with supported diaphragm and cylindrical shell is divided into left expansion chamber, resonant chamber and right expansion chamber from left to right; Described suction tude has two; One end of a suction tude stretches in the left expansion chamber, and an end of another suction tude stretches in the right expansion chamber; One end of steam outlet pipe is positioned at resonant chamber, and the other end of steam outlet pipe passes supported diaphragm and stretches out outside the cylindrical shell through right expansion chamber.High temperature and high pressure gas after the burning that motor is discharged is divided into two stocks and does not get into left expansion chamber and the right expansion chamber that sectional area sharply strengthens from two suction tude; The air communication orifice flow that left clapboard that sharply dwindles through sectional area and supported diaphragm are equipped with is gone into the resonant chamber that sectional area sharply strengthens, and the steam outlet pipe that sharply dwindles through sectional area is again discharged; So repeatedly sudden change makes sound wave repeatedly reflect the generation destructive interference, and acoustic energy significantly reduces and depletion reaches the noise elimination purpose; This automotive muffler all has better noise elimination effect to low frequency, intermediate frequency and high frequency.
As preferably, the volume of described left expansion chamber and right expansion chamber is unequal.Make the asynchronous mutual destructive interference of two strands of high temperature and high pressure gas, be beneficial to acoustic energy and further reduce and depletion through left expansion chamber and right expansion chamber entering resonant chamber.
As preferably, described air-flow through hole has several and circumferentially distributes along left clapboard or supported diaphragm.Meet the structural design needs.
As preferably, the end that described steam outlet pipe is positioned at resonant chamber is provided with side through hole, and side through hole has several and circumferentially in a row distributes along steam outlet pipe.Described side through hole shape can be arc or garden shape or polygonal etc.; Being beneficial to acoustic energy further reduces and depletion.
As preferably, the other end of described suction tude is provided with adpting flange.Be convenient to connect.
As preferably, described automotive muffler is provided with the suction tude fixing frame, and the suction tude fixing frame is fixedly connected with the outside of suction tude and the outside of cylindrical shell respectively.The suction tude fixing frame makes suction tude more firm.
As preferably, described steam outlet pipe is provided with link press span, and link press span is fixedly connected with the steam outlet pipe outside.Link press span is convenient to installing and fixing of automotive muffler.
As preferably, the bottom of described left expansion chamber, resonant chamber and right expansion chamber is equipped with weep hole.Discharge ponding and prevent corrosion, prolong automotive muffler working life.
As preferably, the inboard of described cylindrical shell is provided with acoustical liner.Impedance complex further improves the noise elimination effect.
Compared with prior art, the beneficial effect of the utility model is: one. this automotive muffler all has better noise elimination effect to low frequency, intermediate frequency and high frequency.Two. the volume of left expansion chamber and right expansion chamber is unequal, makes the asynchronous mutual destructive interference of two strands of high temperature and high pressure gas through left expansion chamber and right expansion chamber entering resonant chamber, is beneficial to acoustic energy and further reduces and depletion.Three. the air-flow through hole of left clapboard or supported diaphragm and the side through hole of steam outlet pipe meet the structural design needs, are beneficial to acoustic energy and further reduce and depletion.Four. the other end of suction tude is provided with adpting flange and is convenient to connect.Five. the suction tude fixing frame makes suction tude more firm.Six. link press span is convenient to installing and fixing of automotive muffler.Seven. the weep hole of the bottom of left expansion chamber, resonant chamber and right expansion chamber, discharge ponding and prevent corrosion, prolong automotive muffler working life.Eight. the inboard of cylindrical shell is provided with acoustical liner, and impedance complex further improves the noise elimination effect.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the right elevation of left clapboard among Fig. 1;
Fig. 4 is the right elevation of supported diaphragm among Fig. 1;
Fig. 5 is the utility model embodiment 2 a structural representation;
Fig. 6 is the enlarged view at A place among Fig. 5.
Among the figure: suction tude-1, adpting flange-11, steam outlet pipe-2, side through hole-21, cylindrical shell-3, weep hole-31, dividing plate-4, left clapboard-41, supported diaphragm-42, air-flow through hole-43, left expansion chamber-5, resonant chamber-6, right expansion chamber-7, suction tude fixing frame-8, link press span-9, acoustical liner-10.
Embodiment
Below in conjunction with shown in the accompanying drawing the utility model is described further.
Shown in accompanying drawing 1, accompanying drawing 2: a kind of automotive muffler comprises suction tude 1, steam outlet pipe 2, cylindrical shell 3, dividing plate 4, suction tude fixing frame 8 and link press span 9.
Described dividing plate 4 comprises left clapboard 41 and supported diaphragm 42; Referring to accompanying drawing 3, accompanying drawing 4: left clapboard 41 all has air-flow through hole 43 with supported diaphragm 42; Left clapboard 41 respectively has 14 air-flow through holes 43 with supported diaphragm 42 and circumferentially distributes along left clapboard 41 or supported diaphragm 42.
Described left clapboard 41 and supported diaphragm 42 and cylindrical shell 3 welding also are divided into left expansion chamber 5, resonant chamber 6 and right expansion chamber 7 with cylindrical shell 3 from left to right; The volume of left side expansion chamber 5 and right expansion chamber 7 is unequal, and the volume of present embodiment left side expansion chamber 5 is less than right expansion chamber 7.
Described suction tude 1 has two; One end of a suction tude 1 stretches in the left expansion chamber 5, and an end of another suction tude 1 stretches in the right expansion chamber 7; The other end of suction tude 1 has adpting flange 11; One end of steam outlet pipe 2 is positioned at resonant chamber 6; The end that steam outlet pipe 2 is positioned at resonant chamber 6 has side through hole 21; Side through hole 21 has 21 and circumferentially become four rows to distribute along steam outlet pipe 2, and side through hole 21 shapes can be arc or garden shape or polygonal etc., present embodiment side through hole 21 be shaped as arc; The other end of steam outlet pipe 2 passes supported diaphragm 4 and stretches out outside the cylindrical shell 3 through right expansion chamber 7.
Described suction tude fixing frame 8 is fixedly connected with the outside of suction tude 1 and the outside of cylindrical shell 3 respectively.
Described steam outlet pipe 2 fixing frames are fixedly connected with steam outlet pipe 2 outsides.
High temperature and high pressure gas after the burning that motor is discharged is divided into two stocks and does not get into left expansion chamber and the right expansion chamber that sectional area sharply strengthens from two suction tude; The air communication orifice flow that left clapboard that sharply dwindles through sectional area and supported diaphragm are equipped with is gone into the resonant chamber that sectional area sharply strengthens, and the steam outlet pipe that sharply dwindles through sectional area is again discharged; So repeatedly sudden change makes sound wave repeatedly reflect the generation destructive interference, and acoustic energy significantly reduces and depletion reaches the noise elimination purpose.
This automotive muffler all has better noise elimination effect to low frequency, intermediate frequency and high frequency.The volume of left side expansion chamber and right expansion chamber is unequal, makes the asynchronous mutual destructive interference of two strands of high temperature and high pressure gas through left expansion chamber and right expansion chamber entering resonant chamber, is beneficial to acoustic energy and further reduces and depletion.The air-flow through hole of left clapboard or supported diaphragm and the side through hole of steam outlet pipe meet the structural design needs, and the arc that is shaped as of side through hole is beneficial to further reduction and depleted of acoustic energy.The other end of suction tude is provided with adpting flange and is convenient to connect.The suction tude fixing frame makes suction tude more firm.Link press span is convenient to installing and fixing of automotive muffler.
Shown in accompanying drawing 5, accompanying drawing 6: embodiment 1 is further improved, and the bottom of described left expansion chamber 5, resonant chamber 6 and right expansion chamber 7 all has weep hole 31.The inboard of described cylindrical shell 3 has acoustical liner 10, and the material of acoustical liner 10 is that the glass fibre noise reduction is cotton, and is bonding between acoustical liner 10 and the cylindrical shell 3.
The bottom of left expansion chamber, resonant chamber and the right expansion chamber of this automotive muffler is equipped with weep hole, discharges ponding and prevents corrosion, prolongs automotive muffler working life.The inboard of cylindrical shell is provided with acoustical liner, and impedance complex further improves the noise elimination effect.
It is apparent to one skilled in the art that the utility model can be changed into multiple mode, and the scope that breaks away from the utility model is not thought in such change.The conspicuous modification of the technician to said field that all are such is within the scope that is included in this claim.
Claims (9)
1. an automotive muffler comprises cylindrical shell, dividing plate, suction tude and steam outlet pipe; It is characterized in that: described dividing plate comprises left clapboard and supported diaphragm; Described left clapboard and supported diaphragm are equipped with the air-flow through hole; Left clapboard is fixedly connected with cylindrical shell with supported diaphragm and cylindrical shell is divided into left expansion chamber, resonant chamber and right expansion chamber from left to right; Described suction tude has two; One end of a suction tude stretches in the left expansion chamber, and an end of another suction tude stretches in the right expansion chamber; One end of steam outlet pipe is positioned at resonant chamber, and the other end of steam outlet pipe passes supported diaphragm and stretches out outside the cylindrical shell through right expansion chamber.
2. automotive muffler according to claim 1 is characterized in that: the volume of described left expansion chamber and right expansion chamber is unequal.
3. automotive muffler according to claim 1 is characterized in that: described air-flow through hole has several and circumferentially distributes along left clapboard or supported diaphragm.
4. according to claim 1 or 2 or 3 described automotive mufflers, it is characterized in that: the end that described steam outlet pipe is positioned at resonant chamber is provided with side through hole, and side through hole has several and circumferentially in a row distributes along steam outlet pipe.
5. according to claim 1 or 2 or 3 described automotive mufflers, it is characterized in that: the other end of described suction tude is provided with adpting flange.
6. according to claim 1 or 2 or 3 described automotive mufflers, it is characterized in that: described automotive muffler is provided with the suction tude fixing frame, and the suction tude fixing frame is fixedly connected with the outside of suction tude and the outside of cylindrical shell respectively.
7. according to claim 1 or 2 or 3 described automotive mufflers, it is characterized in that: described steam outlet pipe is provided with link press span, and link press span is fixedly connected with the steam outlet pipe outside.
8. according to claim 1 or 2 or 3 described automotive mufflers, it is characterized in that: the bottom of described left expansion chamber, resonant chamber and right expansion chamber is equipped with weep hole.
9. according to claim 1 or 2 or 3 described automotive mufflers, it is characterized in that: the inboard of described cylindrical shell is provided with acoustical liner.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203965569U CN202273730U (en) | 2011-10-18 | 2011-10-18 | Automobile muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203965569U CN202273730U (en) | 2011-10-18 | 2011-10-18 | Automobile muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202273730U true CN202273730U (en) | 2012-06-13 |
Family
ID=46194094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203965569U Withdrawn - After Issue CN202273730U (en) | 2011-10-18 | 2011-10-18 | Automobile muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202273730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410063A (en) * | 2011-10-18 | 2012-04-11 | 宁波神丰汽车部件有限公司 | Automobile muffler |
| CN103939180A (en) * | 2014-04-28 | 2014-07-23 | 成都陵川特种工业有限责任公司 | Automobile silencer |
-
2011
- 2011-10-18 CN CN2011203965569U patent/CN202273730U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410063A (en) * | 2011-10-18 | 2012-04-11 | 宁波神丰汽车部件有限公司 | Automobile muffler |
| CN102410063B (en) * | 2011-10-18 | 2013-03-13 | 宁波神丰汽车部件有限公司 | Automobile muffler |
| CN103939180A (en) * | 2014-04-28 | 2014-07-23 | 成都陵川特种工业有限责任公司 | Automobile silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120613 Effective date of abandoning: 20130313 |
|
| RGAV | Abandon patent right to avoid regrant |