CN208950739U - A kind of compound broadband silencer of multilayered structure - Google Patents
A kind of compound broadband silencer of multilayered structure Download PDFInfo
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- CN208950739U CN208950739U CN201821403936.9U CN201821403936U CN208950739U CN 208950739 U CN208950739 U CN 208950739U CN 201821403936 U CN201821403936 U CN 201821403936U CN 208950739 U CN208950739 U CN 208950739U
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- central tube
- partition
- shell
- multilayered structure
- structure according
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 19
- 230000003584 silencer Effects 0.000 title claims description 16
- 238000005192 partition Methods 0.000 claims abstract description 34
- 230000030279 gene silencing Effects 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 6
- 229920000742 Cotton Polymers 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to a kind of compound broadband silencers of multilayered structure, including shell and with the central tube being located in shell, closed silencing cavity is formed between the central tube and shell, the partition that silencing cavity is divided into two or more separate spaces by one or more is equipped in the silencing cavity, the central tube is equipped with several bloops communicated with separate space, and the partition between the separate space communicated not over bloop with central tube and adjacent separate space is equipped with venthole.Compared with prior art, the utility model forms multi-layer combined multi-hole resonant cavity by the aperture on partition, and the composite resonant cavity of multiple cavities is constituted in structure.Cause the reflection of sound wave using the impedance of multilayer resonant structure and eliminate the noise, is made of from acoustic angle antipriming pipe resonant cavity and MULTILAYER COMPOSITE multi-hole resonant cavity, plays better sound deadening, the noise of more broadband can be eliminated.
Description
Technical field
The utility model relates to a kind of silencers, and in particular to a kind of compound broadband silencer of multilayered structure.
Background technique
Currently, the wideband muffler of automobile air inlet system mostly uses, impedance complex formula is designed or single porous noise elimination designs.
As Chinese patent CN205977488U discloses a kind of muffler and gas handling system and vehicle, muffler include: air inlet pipe, institute
It states and offers bloop in air inlet pipe；Shell, the shell are located in the air inlet pipe；Separating device, the separating device
It is arranged between the air inlet pipe and the shell and separates the space between the air inlet pipe and the shell more to be formed
The different silencing cavity of a volume, the silencing cavity are connected to the bloop.Single porous noise elimination design deadening frequency band is narrow, property
It can be single.Impedance composite muffler deadening frequency band is wide, but needs to use silencing cotton in inside.This impedance complex formula design
Need to increase inside muffler the strainer of barrier silencing cotton, strainer processing technology is complicated, price is high.There is oil gas inside pipeline
Into when, oil gas can screen surface formed oil film, barrier sound wave be added muffler, significantly attenuating sound deadening.
Utility model content
The compound broadband that the purpose of this utility model is exactly to solve the above-mentioned problems and provides a kind of multilayered structure is eliminated the noise
Device.
The purpose of this utility model is achieved through the following technical solutions:
A kind of compound broadband silencer of multilayered structure, including shell and with being located in central tube in shell, it is described in
Form closed silencing cavity between heart pipe and shell, be equipped in the silencing cavity it is one or more by silencing cavity be divided into two or
The partition of multiple separate spaces, the central tube are equipped with several bloops for communicating with separate space, not over bloop with
The partition between separate space and adjacent separate space that central tube communicates is equipped with venthole, and then is formed multi-layer combined more
Hole resonant cavity is eliminated the noise and being caused the reflection of sound wave using the impedance of multilayer resonant structure, is played better noise reduction and is made
With the noise of more broadband can be eliminated.
Further, the venthole is arranged on partition, and the size and number of venthole are unlimited, according to actual needs into
Row arrangement.
Further, the venthole includes circular hole and the U-shaped hole positioned at partition avris.
Further, the shape of the shell can be cylinder-shaped or special-shaped tubular construction, outer dia and central tube
The ratio of diameter is about (1.5~2): 1, spatially it can carry out reasonable Arrangement in position.
Further, the partition is circular ring shape or class circular ring shape, is vertical on central tube, and silencing cavity is divided into
Multiple separate spaces of different sizes.
Further, the bloop that the central tube is communicated with separate space is set as needed as different number and big
It is small.
Further, the central tube welds together with shell.
Further, the shell is stepped cylinder body or the class cylindrical body for having evacuation.
Further, the shell is that 3-5 saves ladder-like column structure.
Further, the partition is arranged at the merogenesis of stepped cylinder body case.
Compared with prior art, base of the compound broadband silencer of the utility model multilayered structure in Conventional porous resonant cavity
On plinth, by the aperture on partition, multi-layer combined multi-hole resonant cavity is formd, the compound humorous of multiple cavities is constituted in structure
Shake chamber.Cause the reflection of sound wave using the impedance of multilayer resonant structure and eliminate the noise, by antipriming pipe resonance from acoustic angle
Chamber and MULTILAYER COMPOSITE multi-hole resonant cavity are constituted, and are played better sound deadening, can be eliminated the noise of more broadband.In addition, keeping away
The use for exempting from micro-strainer, the situation larger suitable for oil-gas ratio.
Detailed description of the invention
Fig. 1 is the muffler longitudinal section of the utility model embodiment 1；
Fig. 2 is the muffler cross section of the utility model embodiment 1；
Fig. 3,4 are other open-cellular forms of the utility model venthole；
Fig. 5 is the muffler longitudinal section of utility model embodiment 2；
Fig. 6 is the muffler longitudinal section of utility model embodiment 3；
In figure: 1- shell, 2- central tube, 3,4- partition；5- bloop, 6- venthole, 7- separate space.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
A kind of compound broadband silencer of multilayered structure, as shown in Figure 1, including shell 1 and in being located in shell
Heart pipe 2 forms closed silencing cavity between central tube 2 and shell 1, set in silencing cavity there are two partition 3,4, central tube 2 is equipped with
The bloop 5 communicated with separate space.In the present embodiment, shell 1 is stepped cylinder body structure, and partition is arranged in ladder-like circle
At the merogenesis of column shaped case 1, the ratio of the diameter of the diameter and central tube of shell 1 is about 1.5:1, and partition is circular ring shape, is hung down
It is directly set on central tube, central tube welds together with shell.Silencing cavity is divided into three separate spaces 7 by partition 3,4.Its
In, the separate space 7 of left end is communicated by bloop 5 with central tube 2, and partition 4 is equipped with setting venthole 6, rightmost
It is directly connected between separate space 7 and central tube 2 not over bloop 5.Venthole 6 will be opened up on partition 3, in this way, most left
The separate space 7 on the side space 7 adjacent with the right is connected to by the venthole 6 on partition, can form 2 layer composites in this way
Multi-hole resonant cavity.It is the composite resonant cavity for constituting multiple cavities by 2 parts, plays better sound deadening, can eliminate more
The noise of broadband.In addition, the bloop that central tube is communicated with separate space is set as needed as different number and size, sheet
In embodiment, the aperture of intermediate bloop is bigger, and the bloop aperture of left end is smaller.
Venthole 6 is arranged on partition, and the size and number of venthole are unlimited, is arranged with specific reference to actual demand,
It can be used as shown in Fig. 2, be evenly arranged circular hole and the U-shaped hole positioned at partition avris on partition, or as shown in figure 3, only
It arranges circular hole, or as shown in figure 4, only opens up U-shaped hole.
Embodiment 2
Unlike the first embodiment, the present embodiment is only arranged a partition 3, and partition 3 is by shape between central tube 2 and shell 1
2 separate spaces are divided at closed silencing cavity, left side separate space is connected to by bloop 5 with central tube 2, is opened on partition 3
If venthole 6, by the connection of the separate space 7 on the right and the left side.
Embodiment 3
Unlike the first embodiment, three partitions are only arranged in the present embodiment, and partition will be formed between central tube 2 and shell 1
Closed silencing cavity is divided into 4 separate spaces, from left to right, first separate space and third separate space and central tube
2 are connected to by bloop 5, second and the 4th separate space and adjacent independence communicated not over bloop 5 with central tube 2
Partition 3 between space is equipped with venthole 6, and other partition not apertures, can form multi-layer combined multi-hole resonant cavity with this,
It is eliminated the noise and causing the reflection of sound wave using the impedance of multilayer resonant structure, plays better sound deadening, can disappear
Except the noise of more broadband.
It can understand the above description of the embodiments is intended to facilitate those skilled in the art and use practical
It is novel.Person skilled in the art obviously easily can make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiments without having to go through creative labor.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art's announcement according to the present utility model, do not depart from improvement that the utility model scope is made and
Modification should be all within the protection scope of the utility model.
Claims (10)
1. the compound broadband silencer of a kind of multilayered structure, including shell and with the central tube being located in shell, the center
Closed silencing cavity is formed between pipe and shell, is equipped with one or more in the silencing cavity and silencing cavity is divided into two or more
The partition of a separate space, which is characterized in that the central tube is equipped with several bloops communicated with separate space, not over
The partition between separate space and adjacent separate space that bloop is communicated with central tube is equipped with venthole.
2. a kind of compound broadband silencer of multilayered structure according to claim 1, which is characterized in that the venthole cloth
It sets on cavity partition.
3. a kind of compound broadband silencer of multilayered structure according to claim 2, which is characterized in that the venthole packet
Include circular hole and the U-shaped hole positioned at partition avris.
4. a kind of compound broadband silencer of multilayered structure according to claim 1, which is characterized in that the shape of the shell
Shape is cylinder-shaped or abnormity tubular construction, and the ratio of the diameter of outer dia and central tube is 1.5-2:1.
5. a kind of compound broadband silencer of multilayered structure according to claim 1, which is characterized in that the partition is circle
Annular or class circular ring shape, are vertical on central tube, and silencing cavity is divided into multiple separate spaces of different sizes.
6. a kind of compound broadband silencer of multilayered structure according to claim 5, which is characterized in that the central tube with
The bloop that separate space communicates is set as needed as different number and size.
7. a kind of compound broadband silencer of multilayered structure according to claim 1, which is characterized in that the central tube with
Shell welds together.
8. a kind of compound broadband silencer of multilayered structure according to claim 1, which is characterized in that the shell is rank
Scalariform cylindrical body or the class cylindrical body for having evacuation.
9. a kind of compound broadband silencer of multilayered structure according to claim 8, which is characterized in that the shell is 3-
The ladder-like column structure of 5 sections.
10. a kind of compound broadband silencer of multilayered structure according to claim 8, which is characterized in that the partition is set
It sets at the merogenesis of stepped cylinder body case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403936.9U CN208950739U (en) | 2018-08-29 | 2018-08-29 | A kind of compound broadband silencer of multilayered structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403936.9U CN208950739U (en) | 2018-08-29 | 2018-08-29 | A kind of compound broadband silencer of multilayered structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208950739U true CN208950739U (en) | 2019-06-07 |
Family
ID=66736259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821403936.9U Active CN208950739U (en) | 2018-08-29 | 2018-08-29 | A kind of compound broadband silencer of multilayered structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208950739U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873011A (en) * | 2018-08-29 | 2020-03-10 | 曼胡默尔滤清器（上海）有限公司 | Composite broadband silencer with multilayer structure |
| CN112081694A (en) * | 2019-06-14 | 2020-12-15 | 曼胡默尔滤清器（上海）有限公司 | Composite silencer of air inlet system |
-
2018
- 2018-08-29 CN CN201821403936.9U patent/CN208950739U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873011A (en) * | 2018-08-29 | 2020-03-10 | 曼胡默尔滤清器（上海）有限公司 | Composite broadband silencer with multilayer structure |
| CN112081694A (en) * | 2019-06-14 | 2020-12-15 | 曼胡默尔滤清器（上海）有限公司 | Composite silencer of air inlet system |
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