CN101413415B - Silencer - Google Patents
Silencer Download PDFInfo
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- CN101413415B CN101413415B CN2008101730788A CN200810173078A CN101413415B CN 101413415 B CN101413415 B CN 101413415B CN 2008101730788 A CN2008101730788 A CN 2008101730788A CN 200810173078 A CN200810173078 A CN 200810173078A CN 101413415 B CN101413415 B CN 101413415B
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- shell
- small shell
- respiratory tract
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- inlet
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Abstract
The invention discloses a muffler device. The muffler device comprises a shell, a small shell fixed inside the shell, a pressure reducing delivery pipe, wherein the shell comprises two end walls and a side wall. One end wall is provided with an intake pipe. The small shell comprises an inlet and an air passage extending from the inlet to toward the inside of the small shell. The inlet faces the other end wall of the shell. A first small chamber is formed between a shell wall of the small shell and the air passage. One end of the pressure reducing delivery pipe extends into the first small chamber, while the other end passes through the shell to communicate with the outside. In the muffler device, when sound waves enter an inner chamber of the shell in form of waste gas, gas flows separated by the small shell generate interference to reduce the sound wave. The muffler device can make full use of internal space of a muffler and reduces exhaust noises effectively.
Description
Technical field
The present invention relates to engine art, be specifically related to a kind of silencer of motor.
Background technique
The noise that produces for the motor that reduces various vehicles, in the outlet pipe of motor car engine, silencing apparatus is installed, silencing apparatus is used for the flowed energy that consumption of engine produces, and reduces the pressure surge speed of air-flow, can significantly reduce the noise that motor car engine produces.The main structure of silencing apparatus comprises expansion chamber, supplying tube and output tube, under prior art, and supplying tube and output tube biasing, so silencing apparatus total quality skewness, inconvenience when car load is arranged, the low frequency noise reduction is not obvious, causes the acoustic attenuation performance of silencing apparatus and aerodynamic quality relatively poor.Be subjected at the volume of silencing apparatus under the condition of strict restriction, how under the situation that does not increase muffler volume, improve the noise elimination effect, do not increase the main target that power loss becomes muffler design.
Chinese patent CN1230607C discloses a kind of muffler for motor, comprise a housing, a steam outlet pipe that is connected the suction tude on the flue gas leading of drawing on the motor and communicates with air is arranged in housing, this steam outlet pipe comprises three vertical pipeline sections, and each constitutes an exhaust inlet pipe section, waste gas respectively and turns to pipeline section and waste gas pipeline section of giving vent to anger; And two bending tube sections, one of them bending tube section is connected the exhaust inlet pipe section and waste gas turns between the pipeline section, another bending tube section is connected waste gas and turns to pipeline section and waste gas to give vent to anger between the pipeline section, thereby described two bending tube sections and described three straight lengths are connected in series with each other together, exhaust inlet pipe section wherein, waste gas turns to pipeline section and waste gas to give vent to anger pipeline section along the layout that is arranged parallel to each other on the axial direction of described housing, wherein the axis of three straight lengths is positioned respectively on the same leg-of-mutton respective vertices, and described exhaust inlet pipe section is arranged in the position near the bottom of advancing described housing.
In above-mentioned silencer, in order to improve the acoustic attenuation performance of silencing apparatus to the toxic emission noise, this invention repeatedly bends steam outlet pipe in order to prolong the steam outlet pipe length of silencing apparatus in expansion chamber.Wherein, have more performance in order to reach silencing apparatus, bending part connects with the fillet pipe.Though this device can effectively reduce the sympathetic response that the toxic emission noise causes, and can not be detained ponding in steam outlet pipe, this apparatus structure complexity, in the limited scope in silencing apparatus space, not only strengthened difficulty of processing, and be unfavorable for assembling, be unfavorable for using.
Therefore, need a kind ofly can make full use of the inner space of silencing apparatus, the silencer of reduction exhaust sound.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of can make full use of the inner space of silencing apparatus, the silencer of reduction exhaust sound.
In order to solve above technical problem, the invention provides a kind of silencer, comprising:
A shell, this shell comprise two end walls, and connect the sidewall of two end walls;
On an end wall of described shell, has a suction tude; And
Install small shell in the enclosure, this small shell comprises:
An inlet and the respiratory tract that extends in small shell from described inlet, described inlet be substantially towards another relative end wall of the end wall with the suction tude place of shell, forms first cell between the shell wall of small shell and respiratory tract;
Described silencer also comprises reduced pressure delivery tube, and an end of described reduced pressure delivery tube stretches into described first cell, and the other end passes shell and is communicated with ambient air.
Preferably, the airintake direction of the discharge directions of the opposite or described reduced pressure delivery tube of the airintake direction of the Way in of described small shell and suction tude and described suction tude is identical.Preferably, described small shell comprises two end faces, and described inlet is opened therein on the end face, and the length of described respiratory tract is equal to or less than the distance of two end faces, when the length of respiratory tract equal two end faces apart from the time, the end that respiratory tract extends in the small shell has a plurality of spiracles; When the length of respiratory tract less than two end faces apart from the time, respiratory tract extends to open-ended in the small shell.
Preferably, the part that stretches into first cell of described reduced pressure delivery tube has a plurality of oblate spiracles.
Preferably, described shell becomes coaxial with small shell and is symmetrical arranged.
The present invention also provides a kind of silencer, comprising:
A shell, this shell comprise two end walls, and connect the sidewall of two end walls;
Be connected with a next door on the sidewall of shell, described shell is divided into first chamber and second chamber, first chamber is connected with suction tude, and second chamber is connected with outlet pipe;
Be fixed with first small shell in described first chamber, described first small shell comprises:
First inlet and from described first first respiratory tract that extends in first small shell of inlet, described first inlet be substantially towards described next door, formation first cell between the shell wall of first small shell and first respiratory tract;
Be fixed with second small shell in described second chamber, described second small shell comprises:
Second inlet and from described second second respiratory tract that extends in second small shell of inlet, described second inlet be substantially towards described next door, formation second cell between the shell wall of second small shell and second respiratory tract;
Described silencer also comprises reduced pressure delivery tube, and an end of described reduced pressure delivery tube penetrates first cell, and the other end stretches into second cell after passing dividing plate.
Preferably, the Way in of described first small shell is identical with the airintake direction of suction tude Way in and airintake direction opposite or described second small shell.
Preferably, described first small shell comprises two end faces, described first inlet is opened therein on the end face, the length of described first respiratory tract is equal to or less than the distance of two end faces, when the length of first respiratory tract equal two end faces apart from the time, the end that first respiratory tract extends to another end face in the small shell has a plurality of spiracles; When the length of first respiratory tract less than between two end faces apart from the time, first respiratory tract extends to open-ended in first small shell.
Preferably, the part that stretches into first cell of described reduced pressure delivery tube has a plurality of oblate spiracles.
Preferably, the coaxial setting of described suction tude and outlet pipe.
The invention provides a kind of silencer, comprise shell and small shell in the enclosure, the reduced pressure delivery tube that is connected with small shell are set, on reduced pressure delivery tube air inlet end, a plurality of spiracles are set.When sound wave entered in the shell with the waste gas form, the shunting gas that forms under the shunting action of small shell can produce interference, reaches the effect of subduing sound wave.Silencer provided by the invention has not only made full use of the inner space of silencing apparatus, and effectively reduces exhaust sound.
Description of drawings
Fig. 1 is the schematic representation of first kind of embodiment of silencer provided by the invention;
Fig. 2 is the schematic representation of second kind of embodiment of silencer provided by the invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, schematic representation for first kind of embodiment of silencing apparatus provided by the invention, silencing apparatus comprises a shell 1, shell 1 comprises that a sectional shape is circular sidewall 1a and two end walls (1b, 1c) that are connected with sidewall 1a, sidewall 1a is that the right angle is connected with one of them end wall 1b, and sidewall 1a is that fillet is connected with another end wall 1c.Sidewall 1a and end wall 1b also can be for fillet be connected, and there is no particular restriction to this present invention.
The end 11a that one first suction tude, 11, the first suction tude 11 are installed on an end wall 1b of shell is connected with the exhaust end of motor, is used for waste gas is introduced shell, and the other end 11b of first suction tude 11 extends to enclosure.
A small shell 12 also is installed in the enclosure, the cross section of small shell is circular, and two end face 12a, 12b with arc, on the end face 12a of one of them arc of small shell 12, has an inlet, and be extended with the first respiratory tract 12c from described inlet to the inside of small shell, form first cell between the shell wall of the first respiratory tract 12c and small shell.
For the length of first respiratory tract, can also can equal two distances between end face 12a, the 12b less than the distance between two end face 12a, the 12b.When the length of first respiratory tract less than between two end face 12a, the 12b of small shell apart from the time, the end upper shed in extending to small shell.When the length of first respiratory tract equal between two end face 12a, the 12b apart from the time, first respiratory tract extends on the small shell the other end 12b, the end that first respiratory tract extends in the small shell has a plurality of spiracles, spiracle be shaped as oblateness, this is because oblate spiracle helps the smooth circulation of gas.After waste gas entered shell by first inlet tube, the inlet by small shell entered first respiratory tract again, enters small shell inside by the spiracle on first respiratory tract then.
The shape of cross section of first respiratory tract can be ellipse, also can be for circle wait other shape that has the smooth arc transition line, and it is smooth and easy that such shape helps the circulation of air-flow.
The sectional shape of small shell also can be ellipse, and perhaps other has the shape of rounding off face.Small shell is fixedly connected on the shell by supporting post 11c, for the quantity of supporting post, and without particular limitation, but few more good more.Small shell preferably to fix in the enclosure with the coaxial mode of shell, helps the symmetrical distribution of air-flow like this, helps sound generating and interferes, and obtains better erasure effect.For the Way in of small shell, can be another end face 1c of shell outward, preferred, the Way in of the Way in of small shell and first inlet tube 11 is opposite.When waste gas circulates in the enclosure, shunted when the small shell, walk around small shell after, the waste gas of being shunted produces interference mutually, can noise reduction, and then enter small shell.
In addition because the two ends of small shell have the end face of two arcs, waste gas through first inlet tube after, can reach better sound deadening.
On the curved end 12a at the inlet place of small shell, be connected with two reduced pressure delivery tube 13a, 13b, one end 131a of reduced pressure delivery tube extends in first cell of small shell inside, the other end 131b passes the other end 1c relative with first inlet tube on the end face 12a, shell of small shell successively, be in communication with the outside, become the air outlet of engine exhaust.For the quantity of reduced pressure delivery tube, the present invention is also without particular limitation, is at least one, is preferably two.
In the part that stretches into first cell of two reduced pressure delivery tube 13a, 13b, have a plurality of oblate pneumostomes, as previously mentioned, oblate spiracle helps the smooth and easy circulation of air-flow.
The following describes the working principle of the baffler that this embodiment provides.After the sound that motor produces enters shell with the form of waste gas from first inlet tube 11, the arc of circle wall that runs into small shell is shunted the back and is fed forward along the gap between small shell and the shell, after being stopped by the other end 1c of shell, along the circular arc end face of the other end 1c of shell to intermediary movements, the collision of meeting in the centre of sound wave after the shunting, produce and interfere, thereby subdue acoustic wave segment.After sound wave is partly subdued, carry along first respiratory tract of small shell again, enter first cell in the small shell through the oblate spiracle of the length of the first respiratory tract terminal, long oblate spiracle can reduce power loss.Enter first cell after the waste gas that carries sound wave is further subdued sound wave through first respiratory tract, pass two spiracles on reduced pressure delivery tube 13a, the 13b again outside respirating tube is expelled to silencing apparatus.
In first kind of embodiment, the present invention is by being provided with the small shell with axisymmetric in the enclosure, by the profile of small shell reasonably is set, make sound wave be shunted the back uniformly and produce interference, obtaining part subdues, and then, through after having long oblate respirating tube discharge, effectively reduced the exhaust sound of motor at last through having the absorption of long oblate spiracle in the small shell.
Can also above baffler be further improved.
See also the schematic representation of Fig. 2 for second kind of embodiment of baffler provided by the invention.Silencing apparatus comprises that a sectional shape is columnar shell 1, comprises on the shell 1 that a sectional shape is circular sidewall 1a and two end wall 1b, 1c being connected with sidewall 1a, and sidewall is that the right angle is connected with two end walls, certainly, also can connect for fillet.The end 11a that one first suction tude, 11, the first suction tude 11 are installed on an end wall 1b of shell is connected with the exhaust end of motor, is used for waste gas is introduced shell, and the other end 11b of first suction tude 11 extends to enclosure.
Also comprise a dividing plate 21 in the enclosure, described dividing plate is separated into first chamber 22 and second chamber 23 with the cavity in the shell, and described first suction tude 11 is connected with first chamber 22.For the direction of dividing plate, the present invention is preferably perpendicular to the axial direction of shell.According to the present invention, the volume ratio of first chamber and second chamber can be 3:2～8:2, and preferred, the volume ratio of first chamber and second chamber is 2:1.In the present embodiment, the volume ratio of first chamber and second chamber is 2:1.
In first chamber, be fixed with first small shell 12 by supporting post 11c, first small shell has identical structure with small shell in first kind of embodiment, have two curved end 12a, 12b, on the end face 12a of one of them arc of first small shell 12, has an inlet, and be extended with the first respiratory tract 12c from described inlet to the inside of first small shell, the cross section of first respiratory tract is oval, forms first cell between the shell wall of first respiratory tract and small shell.
For the length of first respiratory tract, can also can equal two distances between end face 12a, the 12b less than the distance between two end face 12a, the 12b.When the length of first respiratory tract less than between two end face 12a, the 12b of small shell apart from the time, the end upper shed in extending to small shell.When the length of first respiratory tract equal between two end face 12a, the 12b apart from the time, the first respiratory tract 12c extends on the first small shell the other end 12b, has a plurality of oblate spiracles extending on the end in the small shell of the first respiratory tract 12c.The Way in of first small shell is towards the next door, and preferred, in this embodiment, the Way in of first small shell is opposite with the Way in of first suction tude.First small shell and the coaxial setting of shell, waste gas can be shunted uniformly like this, helps producing interfering.
On the curved end 12a at the inlet place of first small shell, be connected with two reduced pressure delivery tube 13a, 13b, an end 131a of reduced pressure delivery tube extends in first cell of the first small shell inside, and the other end 131b passes dividing plate and extends to second chamber 23.
The Way in that by supporting post 11d second small shell, 14, the second small shells 14 is installed in second chamber is towards dividing plate, and preferred, in this embodiment, the Way in of second small shell is opposite with the Way in of first small shell.The structure of second small shell 14 can be identical with the structure of first small shell 12, and two ends are end faces of circular arc type.From the inlet of second small shell 14 second respiratory tract that extended internally, the length of second respiratory tract can be equal to or less than the distance between two end faces of second small shell, when the length of second respiratory tract equal between two end faces of second small shell apart from the time, second respiratory tract has a plurality of oblate spiracles on the terminal in it extends to second small shell from another end face of entrance extension to the second small shell; When the length of second respiratory tract less than between two end faces of second small shell apart from the time, second respiratory tract extends to the end openings in second small shell.
Form second cell between the shell wall of the second respiratory tract 14a and second small shell, the other end 131b of described reduced pressure delivery tube extends in second cell of second small shell, 14 inside after extending to second chamber 23 again.Second small shell and the coaxial setting of shell, the waste gas that comes out in second small shell can be carried from the slit between second small shell and second chamber uniformly like this, help producing interfering.
On the other end 1c of shell, outlet pipe 15 is installed, the first end 15a of outlet pipe 15 is in communication with the outside, its second end 15b is communicated with second chamber of shell, comprise a plurality of oblate spiracles on the second end 15b of outlet pipe 15, the suction tude 11 coaxial settings of described outlet pipe 15 and shell one end.
The working principle that regards to the silencer that present embodiment provides down is introduced.Sound wave enters first chamber of shell with the form of waste gas from first suction tude, because the coaxial end face that is arranged on enclosure and has an arc of first small shell, waste gas is shunted under the effect of the curved end of first small shell uniformly.Waste gas after the shunting inwardly run into along the space between first small shell and the shell dividing plate 21 stopping the back along dividing plate 21 walls to intermediary movements, the waste gas after the shunting is after collision is met in the centre, sound generating is interfered, thereby subdues acoustic wave segment.After sound wave is partly subdued, carry along first respiratory tract of first small shell again, enter in first cell in first small shell through the oblate spiracle of the length of the first respiratory tract terminal, long oblate spiracle helps the airflow smooth circulation, can reduce power loss.
Enter first cell after the waste gas that carries sound wave is further subdued sound wave through first respiratory tract, pass second cell that two spiracles on reduced pressure delivery tube 13a, the 13b enter second small shell, 14 inside in second chamber.In second small shell 14, has one second respiratory tract 14a, has the oblate spiracle of a plurality of length on the terminal of the second respiratory tract 14a, entering the second little chamber waste gas carries along the arcwall of second small shell, the long flat round hole that passes then on the second respiratory tract 14a enters second chamber from second respiratory tract, carry along the space between second small shell and second chamber more afterwards, discharge by outlet pipe 15 at last, sound wave is subdued.
In second kind of embodiment, to be shunted under the effect of first small shell of sound wave in first chamber, the gas after the shunting produces interferes, and helps subduing of sound wave; And then enter second small shell in second chamber by reduced pressure delivery tube, and reflection takes place and interferes in sound wave in second small shell, and the waste gas that comes out from second small shell interferes the back once more and discharges from outlet pipe in second chamber.Silencer provided by the invention is by being provided with small shell in the enclosure, sound wave is shunted and repeatedly reflection and interference is taken place, make sound wave obtain effectively subduing, and provide long oblate spiracle by end at respiratory tract, reduced pressure delivery tube, outlet pipe, help the smooth and easy circulation of gas, can reduce power loss.
According to the present invention, the shape of cross section of shell is not limited to circle, also can have the shape of arc transiting surface for other, and the two ends of shell also can be for being arc.Silencer provided by the invention can be used for the motor of various vehicles
More than silencer provided by the present invention is described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation 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 (10)
1. silencer comprises:
A shell, this shell comprise two end walls, and connect the sidewall of two end walls;
On an end wall of described shell, has a suction tude; And
Install small shell in the enclosure, this small shell comprises:
An inlet and the respiratory tract that extends in small shell from described inlet, described inlet be towards another relative end wall of the end wall with the suction tude place of shell, forms first cell between the shell wall of small shell and respiratory tract;
Described small shell also comprises two end faces, described inlet is opened therein on the end face, the length of described respiratory tract is equal to or less than the distance of two end faces, when the length of respiratory tract equal two end faces apart from the time, the end that extends in the small shell of respiratory tract has a plurality of spiracles; When the length of respiratory tract less than two end faces apart from the time, respiratory tract extends to open-ended in the small shell;
Described silencer also comprises reduced pressure delivery tube, and an end of described reduced pressure delivery tube stretches into described first cell, and the other end passes shell and is communicated with ambient air.
2. silencer according to claim 1 is characterized in that the Way in of described small shell is opposite with the airintake direction of suction tude.
3. silencer according to claim 1 is characterized in that the discharge directions of described reduced pressure delivery tube is identical with the airintake direction of described suction tude.
4. according to each described silencer of claim 1 to 3, it is characterized in that the part that stretches into first cell of described reduced pressure delivery tube has a plurality of oblate spiracles.
5. according to each described silencer of claim 1 to 3, it is characterized in that described shell becomes coaxial with small shell and is symmetrical arranged.
6. silencer comprises:
A shell, this shell comprise two end walls, and connect the sidewall of two end walls;
Be connected with a next door on the sidewall in the enclosure, described shell is divided into first chamber and second chamber, first chamber is connected with suction tude, and second chamber is connected with outlet pipe;
Be fixed with first small shell in described first chamber, described first small shell comprises:
First inlet and from described first first respiratory tract that extends in first small shell of inlet, described first inlet be towards described next door, formation first cell between the shell wall of first small shell and first respiratory tract;
Be fixed with second small shell in described second chamber, described second small shell comprises:
Second inlet and from described second second respiratory tract that extends in second small shell of inlet, described second inlet be towards described next door, formation second cell between the shell wall of second small shell and second respiratory tract;
Described first small shell also comprises two end faces, described first inlet is opened therein on the end face, the length of described first respiratory tract is equal to or less than the distance of two end faces, when the length of first respiratory tract equal two end faces apart from the time, the end that first respiratory tract extends to another end face in the small shell has a plurality of spiracles; When the length of first respiratory tract less than between two end faces apart from the time, first respiratory tract extends to open-ended in first small shell;
Described silencer also comprises reduced pressure delivery tube, and an end of described reduced pressure delivery tube penetrates first cell, and the other end stretches into second cell after passing dividing plate.
7. silencer according to claim 6 is characterized in that the Way in of described first small shell is opposite with the airintake direction of suction tude.
8. silencer according to claim 6 is characterized in that the Way in of described second small shell is identical with the airintake direction of suction tude.。
9. according to each described silencer of claim 6 to 8, it is characterized in that the part that stretches into first cell of described reduced pressure delivery tube has a plurality of oblate spiracles.
10. according to each described silencer of claim 6 to 8, it is characterized in that the coaxial setting of described suction tude and outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101730788A CN101413415B (en) | 2008-11-26 | 2008-11-26 | Silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101730788A CN101413415B (en) | 2008-11-26 | 2008-11-26 | Silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101413415A CN101413415A (en) | 2009-04-22 |
| CN101413415B true CN101413415B (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101730788A Expired - Fee Related CN101413415B (en) | 2008-11-26 | 2008-11-26 | Silencer |
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| Country | Link |
|---|---|
| CN (1) | CN101413415B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574028A (en) * | 2020-06-12 | 2020-08-25 | 彩虹（合肥）光伏有限公司 | Burner structure on oxy-fuel combustion glass kiln |
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2008
- 2008-11-26 CN CN2008101730788A patent/CN101413415B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101413415A (en) | 2009-04-22 |
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