CN203347887U - Dissipative-reactive type muffler - Google Patents
Dissipative-reactive type muffler Download PDFInfo
- Publication number
- CN203347887U CN203347887U CN 201320364114 CN201320364114U CN203347887U CN 203347887 U CN203347887 U CN 203347887U CN 201320364114 CN201320364114 CN 201320364114 CN 201320364114 U CN201320364114 U CN 201320364114U CN 203347887 U CN203347887 U CN 203347887U
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- China
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- shell body
- dividing plate
- silencing apparatus
- lower shell
- outlet pipe
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Abstract
The utility model relates to the field of mufflers, and discloses a dissipative-reactive type muffler. The dissipative-reactive type muffler comprises at least one partition plate, at least one air inlet tube, at least one air outlet tube, a high temperature resistance sound absorption material, an upper shell body and a lower shell body. The partition plate and the lower shell body are connected together. The number of formed circular holes is the same as the number of the tubes, the air inlet tube and the air outlet tube penetrate through the circular holes of the partition plate respectively and are connected with the partition plate, and mutation interfaces are arranged on parts of the tube walls of the air inlet tube and the air outlet tube. According to the dissipative-reactive type muffler, through the structural arrangement, the noise elimination principle of a dissipative muffler and the noise elimination principle of a reactive muffler are combined, the noise elimination characteristics of the dissipative muffler and the noise elimination characteristics of the reactive muffler are achieved at the same time, and the purpose for effectively removing high-frequency, middle-frequency and low-frequency noise is achieved.
Description
Technical field
The utility model relates to the silencing apparatus field, particularly relates to a kind of impedance shape silencing apparatus.
Background technique
Silencing apparatus is the device that the permission air-flow for stoping sound transmission to be developed passes through, and is the important measures of eliminating air power noise.Dissipative muffler and reactive muffler are the two important class silencing apparatuss in silencing apparatus.Dissipative muffler is mainly that to utilize sound-absorbing porous material to fall low noise.Sound-absorbing material be fixed on the inwall of air-flow path or arrange in pipeline according to certain way, just having formed dissipative muffler.When sound wave enters dissipative muffler, a part of acoustic energy rubs and changes into thermal energy consumption and dissipates in the hole of porous material, makes to weaken by the sound wave of silencing apparatus.Dissipative muffler is good to the medium-high frequency soundproof effect, poor to the low frequency soundproof effect.Reactive muffler is to be combined by the pipe of abrupt interface and chamber, and each chamber with pipe has the natural frequency of oneself.When the sound wave that includes various frequency contents enters first short tube, only near the sound wave of some frequency first chamber natural frequency could by and arrive second short tube mouth, the sound wave of other frequency can not pass through.Can only in chamber, come back reflective, reactive muffler be applicable to eliminate in, low-frequency noise, and poor to the soundproof effect of high-frequency noise.
The model utility content
(1) technical problem that will solve
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, proposes a kind of silencing apparatus that can effectively eliminate high, medium and low audio-frequency noise.
(2) technological scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of impedance shape silencing apparatus, comprises at least one dividing plate, at least one suction tude, at least one steam outlet pipe, high-temperature resistant sound absorption material, upper shell and lower shell body; Described dividing plate and lower shell body link together, and are provided with the circular hole with the number of pipe, and described suction tude is connected with dividing plate through the circular hole of described dividing plate respectively with described steam outlet pipe, on the part tube wall of described suction tude and described steam outlet pipe, abrupt interface is arranged.
Wherein, described dividing plate is provided with microcellular structure.
Wherein, described dividing plate runs through lower shell body at the width direction of lower shell body.
Wherein, the abrupt interface on the part tube wall of described suction tude and described steam outlet pipe is microcellular structure.
Wherein, described high-temperature resistant sound absorption material is the glass needle felt, and described glass needle felt is wrapped in the outer wall of steam outlet pipe microcellular structure, and at glass needle felt outer wall coated metal wall.
Perhaps, described high-temperature resistant sound absorption material is glass fiber, and described glass fiber is inserted in the chamber of upper shell and lower shell body and dividing plate formation.
Wherein, described steam outlet pipe is provided with suction sleeve.
Wherein, described upper shell and lower shell body link together by the mode by its outward edge riveted joint.
Perhaps, described upper shell and lower shell body link together by the mode by its outward edge welding.
Wherein, described suction tude, steam outlet pipe, dividing plate, upper shell, lower shell body all adopt stainless steel.
(3) beneficial effect
A kind of impedance shape silencing apparatus that technique scheme provides, by textural association, by the noise-cancelling theory combination of dissipative muffler and reactive muffler, and then have both acoustic characteristics concurrently, realizes effectively eliminating the purpose of high, medium and low audio-frequency noise.
The accompanying drawing explanation
Fig. 1 is the structural representation of the utility model impedance shape silencing apparatus;
Fig. 2 is the structural representation of the first dividing plate;
Fig. 3 is the structural representation of second partition.
Wherein, 1, suction tude; 11, the microcellular structure of suction tude; 2, steam outlet pipe; 21, the microcellular structure of steam outlet pipe; 3, the first dividing plate; 31, the circular hole joined with steam outlet pipe; 32, the circular hole joined with suction tude; 33, the microcellular structure on the first dividing plate; 4, second partition; 41, the circular hole joined with steam outlet pipe; 42, the circular hole joined with suction tude; 43, the microcellular structure on second partition; 5, suction sleeve.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for the utility model is described, but are not used for limiting scope of the present utility model.
As Fig. 1, the structural representation that Fig. 1 is the utility model impedance shape silencing apparatus, comprise two dividing plates, the first dividing plate 3 and second partition 4, as Fig. 2 and Fig. 3, the first dividing plate 3 is provided with microcellular structure 33, also is provided with microcellular structure 43 on second partition 4, but the size and number in the hole of microcellular structure 33 and microcellular structure 43 has difference, this designs for different chamber can have different natural frequencys; Groove and lower shell body that dividing plate and lower shell body are provided with by lower shell body link together, the first dividing plate 3 and second partition 4 are separated into three chambers by impedance shape silencing apparatus, and dividing plate is provided with two circular holes, suction tude 1 is respectively through the circular hole 32 of the first dividing plate 3, circular hole 42 and two dividing plate welding of second partition 4, steam outlet pipe 2 is respectively through the circular hole 31 of the first dividing plate 3, circular hole 41 and two dividing plate welding of second partition 4, suction tude 1 wall portion of chamber on the right is arranged with microcellular structure 11, and steam outlet pipe 2 is arranged with microcellular structure 21 in the wall portion of intermediate cavity; Because silencing apparatus easily produces moisture in the course of the work, make the degradation of silencing apparatus, therefore, also be provided with suction sleeve 5 on steam outlet pipe 2, when steam outlet pipe 2 has air-flow to flow out, water is discharged to silencing apparatus by absorption tube 5; Upper shell and lower shell body link together by the mode by its outward edge riveted joint, perhaps, upper shell and lower shell body are linked together by the mode by its outward edge welding, and the first dividing plate 3 all adopts stainless steel with second partition 4, steam outlet pipe 2, suction tude 1, upper shell, lower shell body.
The high-temp waste gas of discharging due to motor car engine easily melts sound-absorbing material, so the utility model adopts high-temperature resistant sound absorption material glass pin felt, the glass needle felt is wrapped in steam outlet pipe 2 on the outer wall of the microcellular structure 21 of intermediate cavity, and at glass needle felt outer wall coated metal wall, play the effect with chamber isolation, prevent that the interior sound wave of sound wave in pipeline and chamber from interfering with each other.
The high-temperature resistant sound absorption material can also be selected glass fiber, and glass fiber is inserted in the chamber of upper shell and lower shell body and dividing plate formation.
The Placement of aforementioned barriers and suction tude 1 and steam outlet pipe 2 welding, can replace with other known pipeline and plate Placement, as expanded joint.
The mode that dividing plate is connected by the lower shell body groove with lower shell body, can replace with other known Placement, as welding.
The working principle of the utility model impedance shape silencing apparatus dissipative muffler performance: high-temperature resistant sound absorption material glass pin felt or glass fiber form the dissipative muffler part, when sound wave enters the glass needle felt of resistive part or glass fiber, a part acoustic energy rub and changes into thermal energy consumption and dissipate in the hole of porous material, makes by dissipative muffler sound wave partly weaken.
The working principle of the utility model impedance shape silencing apparatus reactive muffler performance, reactive muffler is partly to consist of the pipe of abrupt interface and chamber, concretely, by suction tude 1 and steam outlet pipe 2 with by the first dividing plate 3, the chamber that second partition 4 forms forms, each chamber with pipe has the natural frequency of oneself, when the sound wave that includes various frequency contents enters steam outlet pipe 2 left side port, only near the sound wave of some frequency natural frequency of the left chamber with pipe could arrive from the left side port of steam outlet pipe 2 the right port of steam outlet pipe 2, the sound wave of other frequency can not pass through, can only in the on the left side chamber, carry out back reflective, simultaneously, near the sound wave of some frequency natural frequency of the left chamber with pipe is by the microcellular structure 33 of the first dividing plate 3, arrive intermediate cavity from left chamber, the natural frequency that oneself is arranged with the intermediate cavity of pipe, only near the sound wave of some frequency natural frequency of the intermediate cavity with pipe could be from middle chamber by the microcellular structure 43 of second partition 4, arrive right chamber, the sound wave of other frequency can not pass through, can only in intermediate cavity, carry out back reflective, make the sound wave by the reactive muffler part weaken.
The utility model is by above two kinds of modes, i.e. the noise-cancelling theory of dissipative muffler part and reactive muffler reaches the effect of the high, medium and low audio-frequency noise of effective elimination.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (10)
1. impedance shape silencing apparatus, is characterized in that, comprises at least one dividing plate, at least one suction tude (1), at least one steam outlet pipe (2), high-temperature resistant sound absorption material, upper shell and lower shell body; Described dividing plate and lower shell body link together, and be provided with the circular hole with the number of pipe, described suction tude (1) is connected with dividing plate through the circular hole of described dividing plate respectively with described steam outlet pipe (2), on the part tube wall of described suction tude (1) and described steam outlet pipe (2), abrupt interface is arranged.
2. impedance shape silencing apparatus according to claim 1, is characterized in that, described dividing plate is provided with microcellular structure.
3. impedance shape silencing apparatus according to claim 1, is characterized in that, described dividing plate runs through lower shell body at the width direction of lower shell body.
4. impedance shape silencing apparatus according to claim 1, is characterized in that, the abrupt interface on the part tube wall of described suction tude (1) and described steam outlet pipe (2) is microcellular structure.
5. impedance shape silencing apparatus according to claim 1, is characterized in that, described high-temperature resistant sound absorption material is the glass needle felt, and described glass needle felt is wrapped in the outer wall of steam outlet pipe (2) microcellular structure, and at glass needle felt outer wall coated metal wall.
6. impedance shape silencing apparatus according to claim 1, is characterized in that, described high-temperature resistant sound absorption material is glass fiber, and described glass fiber is inserted in the chamber of upper shell and lower shell body and dividing plate formation.
7. impedance shape silencing apparatus according to claim 1, is characterized in that, described steam outlet pipe (2) is provided with suction sleeve (5).
8. impedance shape silencing apparatus according to claim 1, is characterized in that, described upper shell and lower shell body link together by the mode by its outward edge riveted joint.
9. impedance shape silencing apparatus according to claim 1, is characterized in that, described upper shell and lower shell body link together by the mode by its outward edge welding.
10. according to the described impedance shape of claim 1-9 any one silencing apparatus, it is characterized in that, described suction tude (1), steam outlet pipe (2), dividing plate, upper shell, lower shell body all adopt stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320364114 CN203347887U (en) | 2013-06-24 | 2013-06-24 | Dissipative-reactive type muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320364114 CN203347887U (en) | 2013-06-24 | 2013-06-24 | Dissipative-reactive type muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203347887U true CN203347887U (en) | 2013-12-18 |
Family
ID=49747797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320364114 Expired - Fee Related CN203347887U (en) | 2013-06-24 | 2013-06-24 | Dissipative-reactive type muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203347887U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370343A (en) * | 2014-08-18 | 2016-03-02 | 三浦工业株式会社 | Silencer |
-
2013
- 2013-06-24 CN CN 201320364114 patent/CN203347887U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370343A (en) * | 2014-08-18 | 2016-03-02 | 三浦工业株式会社 | Silencer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20170624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |