CN206471117U - A kind of vortex type silencer - Google Patents
A kind of vortex type silencer Download PDFInfo
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- CN206471117U CN206471117U CN201621364012.3U CN201621364012U CN206471117U CN 206471117 U CN206471117 U CN 206471117U CN 201621364012 U CN201621364012 U CN 201621364012U CN 206471117 U CN206471117 U CN 206471117U
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- eddy current
- volute body
- inlet pipe
- plate
- air flue
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Abstract
A kind of vortex type silencer, is related to the silencing apparatus of pneumatic noise.Including volute body (1) and air inlet pipe (2), there is the eddy current type air flue (3) from inside to outside in gradual-enlargement type in volute body, there is air stream outlet eddy current type air flue outer end, air inlet pipe (2) the inner is communicated with eddy current type air flue (3) the inner in volute body, and the internal face of the volute body is provided with the first sound absorption structure layer (4)；The internal face of the air inlet pipe (2) is provided with the second sound absorption structure layer (2a).With gas-flow resistance it is small, can reduce energy consumption and improve soundproof effect the features such as.
Description
Technical field
The utility model is related to the silencing apparatus of pneumatic noise, and specifically a kind of eddy current type for being used to reduce pneumatic noise disappears
Sound device.
Background technology
Notification number CN1629457A documents disclose a kind of " vortex type silencer ", and the silencer has cylindrical tube, cylinder
The axis direction of intracoelomic cavity is set up in parallel some " bowl-shape " arc-shaped partitions, after noise air-flow enters in cylinder, successively with each arc
Dividing plate carries out percussion, and is vortexed and sound energy consumption along the formation of " bowl-shape " arcwall circumference.Its deficiency is, during one is operation, noise
Successively with each " bowl-shape " arc-shaped partition percussion occurs for air-flow, and gas-flow resistance is larger, and airflow pressure losses are big, and energy consumption is larger；
Two be that cylinder is cylindrical tube, the axis direction of gas channel is uiform section product, when air velocity is larger, and silencer goes out
Mouth easily produces larger regenerated noise, and for part high-frequency noise, because wavelength is shorter, exists and be directed through silencer
May, influence soundproof effect.
The content of the invention
In view of the shortcomings of the prior art, the utility model proposes a kind of vortex for reducing gas-flow resistance and improving soundproof effect
Formula silencer.
There is the whirlpool from inside to outside in gradual-enlargement type in technical solutions of the utility model, including volute body and air inlet pipe, volute body
There are air stream outlet, the inner eddy current type air flue the inner phase with volute body of the air inlet pipe in streaming air flue, eddy current type air flue outer end
Logical, the internal face of the volute body is provided with the first sound absorption structure layer.The vortex that noise air-flow is entered in volute body by air inlet pipe
After formula air flue is inner, air stream outlet is flowed to along eddy current type air flue, noise air-flow is in eddy current type air flue in flow process, in air-flow
Noise sound wave by sound absorption structure layer absorb and effectively reduce pneumatic noise, improve soundproof effect.
Compared with the prior art, the utility model has the characteristics that and technique effect：
1st, because housing of the present utility model is volute body structure, gas channel is from inside to outside in the eddy current type of gradual-enlargement type
Air flue, the sectional area of eddy current type air flue gradually increases from inside to outside, therefore gas-flow resistance is small, and airflow pressure losses are small, can reduce
Energy consumption.
2nd, because the sectional area of eddy current type air flue gradually increases from inside to outside, air-flow of the noise air-flow in eddy current type air flue
Speed is gradually reduced accordingly, and air-flow is gradually reduced therewith by reproduced air-flow noise during eddy current type air flue, is conducive to raising to disappear
Sound effective value.
3rd, due to the eddy current type air flue that gas channel is gradual-enlargement type, flow direction of the noise air-flow in whole eddy current type air flue is in
Turbulent state, therefore being directed through for part high-frequency noise can be avoided, the high-frequency noise in air-flow is advantageously reduced, improves and eliminates the noise
The overall soundproof effect of device.
4th, due to gas channel be gradual-enlargement type eddy current type air flue, noise air-flow with eddy current type air flue swirl direction gradually
Change flow direction, the gradually change of noise air flow direction so that the noise sound wave in air-flow is in eddy current type air flue relative to sound absorption
Structure sheaf produces multiple reflections and repeatedly absorbed by sound absorption structure layer, can effectively improve soundproof effect.
5th, because housing of the present utility model is that the gas channel in scroll casing shape, volute body is eddy current type air flue, in level
Direction takes up space small.
Other features of the present utility model will be further illustrated with technique effect with reference to embodiment.
Brief description of the drawings
Fig. 1 is the utility model scenario-frame schematic diagram, illustrates a kind of implementation structure；
Fig. 2 is Fig. 1 A-A schematic enlarged-scale views；
Fig. 3 is a kind of modification structures schematic diagram of the utility model scheme；
Fig. 4 is Fig. 3 left view；
Fig. 5 is the further structural representation on the basis of the utility model scheme；
Fig. 6 is the B-B schematic enlarged-scale views in Fig. 5；
Fig. 7 is another implementation structural representation of the present utility model；
Fig. 8 is I portions schematic enlarged-scale view in Fig. 1, Fig. 3, Fig. 5, Fig. 7, is that a kind of of sound absorption structure layer implements structure；
Fig. 9 is another implementation structural representation of sound absorption structure layer.
Embodiment
Implement structure 1, referring to Fig. 1, Fig. 2.Including volute body 1 and air inlet pipe 2, it is in flaring from inside to outside to have in volute body 1
The eddy current type air flue 3 of formula, i.e., the sectional area of described eddy current type air flue 3 gradually increases from inside to outside, and there is gas eddy current type air flue outer end
Flow export 3a, described the inner of air inlet pipe 2 is communicated with the inner of eddy current type air flue 3 in volute body, on the internal face of the volute body 1
Provided with the first sound absorption structure layer 4.Second sound absorption structure layer 2a is set on the internal face of the air inlet pipe 2.The volute body 1 is by snail
Shell-like structure 1a and positioned at two ends end plate 1b constitute, referring to Fig. 2, it is illustrated that in two ends end plate 1b be monoblock construction, implement
In, the end plate 1b at two ends structure is not unique；Described the inner of air inlet pipe 2 is on the end plate 1b of one end in volute body 1
Hole 1c enter the inner of eddy current type air flue 3, and communicated with the inner of the eddy current type air flue 3；In specific implementation, the air inlet
It can be set the diversion short tube 2b being oriented to for air-flow on the inner of pipe 2, diversion short tube 2b outlet is towards the side of noise air current flow
To being conducive to reducing gas-flow resistance, simultaneously as reflexs of the diversion short tube 2b to sound wave in air-flow, noise elimination effect can be improved
Really, moreover, the section of diversion short tube 2b outlets is less than the inner sectional area of eddy current type air flue 3, noise air-flow is inner by air inlet pipe 2
Diversion short tube 2b outlets enter behind the inner of eddy current type air flue 3, because section is expanded suddenly, cause sound wave to reflect and interfere, produce
Reactive muffling is acted on, and is conducive to improving soundproof effect.In implementation, described scroll casing shape component 1a and two pieces are made respectively first
End plate 1b, and air inlet pipe 2, and the sound absorption structure layer is accordingly made and connects, then assembled and connected, the spiral case
Shape component 1a is spliced to form by more than one piece.
Implement structure 2, referring to Fig. 3, Fig. 4.Including volute body 1 and air inlet pipe 2, it is in flaring from inside to outside to have in volute body 1
The eddy current type air flue 3 of formula, i.e., the sectional area of described eddy current type air flue 3 gradually increases from inside to outside, i.e., described eddy current type air flue 3
Sectional area gradually increases from inside to outside, and eddy current type air flue outer end has in air stream outlet 3a, described the inner of air inlet pipe 2 and volute body
The inner of eddy current type air flue 3 is communicated, and the internal face of the volute body 1 is provided with the first sound absorption structure layer 4.The air inlet pipe 2 it is interior
Second sound absorption structure layer 2a is set on wall；End plate 1b of the volute body 1 by scroll casing shape component 1a and positioned at two ends is constituted, ginseng
See Fig. 4, it is illustrated that in two ends end plate 1b be monoblock construction；The air inlet pipe 2 is inner logical on the scroll casing shape component 1a
Hole 1d, which enters, to be connected and communicates with the inner end wall of the eddy current type air flue 3 in volute body, and the outlet of the inner of air inlet pipe 2 is towards noise
The direction of air current flow, is conducive to reducing gas-flow resistance and improves soundproof effect, moreover, the section of the inner outlet of air inlet pipe 2 is small
In the inner sectional area of eddy current type air flue 3, noise air-flow is entered behind the inner of eddy current type air flue 3 by the inner outlet of air inlet pipe 2, because
Section is expanded suddenly, causes sound wave to reflect and interfere, and produces reactive muffling effect, is conducive to improving soundproof effect；In implementation, point
Not Zhi Zuo scroll casing shape component 1a and two end plates 1b, and air inlet pipe 2 includes the making and connection of corresponding sound absorption structure layer, then
Assembled and connected, the scroll casing shape component 1a is spliced to form by more than one piece, in splicing and consider be easy to air inlet pipe 2 to enter
Enter the connection inner in eddy current type air flue 3 and with eddy current type air flue 3.
Implement structure 3.It is the further implementation structure of the utility model scheme, when larger to throughput referring to Fig. 5, Fig. 6
Pneumatic noise when being eliminated the noise, needing larger gas channel section, in the air stream outlet 3a of the outer end of eddy current type air flue 3
Sound absorption plate 3b is set；The sound absorption plate 3b includes plate 3c, the end plate 1b of plate 3c two ends respectively with volute body two ends
Connection, plate 3c plate face is provided with absorbent treatment, referring to Fig. 6, and the structure pneumatic noise larger to throughput is eliminated the noise, needed
It when wanting larger gas channel section, can prevent high frequency from failing, be conducive to improving soundproof effect.
Fig. 7 show another implementation structure of the utility model scheme, relative to shown in Fig. 1, Fig. 3, Fig. 5, in Fig. 7
The length of eddy current type air flue 3 is big, that is, shows, in embodiment of the present utility model, the length of eddy current type air flue 3 is not
Uniquely, the length of eddy current type air flue 3 can be determined according to spectral characteristic, sound deadening capacity of requirement of noise air-flow etc..
The first sound absorption structure layer 4 in the utility model has a variety of implementation structures.Fig. 8 illustrates the first sound absorption structure layer 4
It is a kind of implement structure, as illustrated, first sound absorption structure layer 4 includes perforated plate 4a, perforated plate 4a passes through skeleton and institute
The connection of the inwall of volute body 1 is stated, has between perforated plate 4a and the internal face of volute body 1 and sound-absorbing material 4c is provided with cavity 4b, cavity 4b.
In operation, noise air-flow along eddy current type air flue during flowing, and noise air-flow enters sound absorption material via the hole on perforated plate 4a
In the hole of material, tiny sound-absorbing material (such as filament) is caused to produce vibration, due to friction and viscosity resistance effect, air-flow is made an uproar
The acoustic energy of sound is converted to heat energy, is absorbed and dissipated, so as to reduce noise.In implementation, the thickness of the first sound absorption structure layer 4
Degree, is determined according to the spectral characteristic of pneumatic noise and selected sound-absorbing material type and density etc..
Fig. 9 illustrates another implementation structure of the first sound absorption structure layer 4, and the first sound absorption structure layer 4 includes
Microwell plate 4d, microwell plate 4d are connected by skeleton with the inwall of volute body 1, microwell plate 4d and the internal face of volute body 1 it
Between have space 4e, resonance sound-absorbing structure is constituted by microwell plate and described space 4e, according to capillary sound sucking theory, reduce air-flow
Noise.In implementation, microwell plate typically uses 0.2~1.0mm metallic plate, and 0.2~1.0mm of aperture, punching rate is 1~5%, institute
Space 4e size is stated, is determined according to the spectral characteristic of pneumatic noise and desired sound deadening capacity etc..Using the sound absorption structure
Silencer, available for high temperature, high humidity or the place for thering is air-flow cleaning to require.
The implementation structure and first sound absorption structure layer 4 of the second sound absorption structure layer 2a on the internal face of air inlet pipe 2
Implementation structure it is similar.
Implementation structure described in this specification embodiment not includes the institute that the utility model scheme is covered
There is embodiment, in addition to the various implementation structures described in embodiment, other on the basis of the utility model scheme
Any deformation implementation structure belongs to scope of the present utility model.
Claims (9)
1. a kind of vortex type silencer, it is characterized in that：Including volute body and air inlet pipe, it is in gradual-enlargement type from inside to outside to have in volute body
Eddy current type air flue, there is an air stream outlet eddy current type air flue outer end, in the inner eddy current type air flue with volute body of the air inlet pipe
End is communicated, and the internal face of the volute body is provided with the first sound absorption structure layer.
2. according to a kind of vortex type silencer described in claim 1, it is characterized in that：Set on the internal face of the air inlet pipe (2)
There is the second sound absorption structure layer (2a).
3. according to a kind of vortex type silencer described in claim 1, it is characterized in that：Air inlet pipe (2) the inner is by the volute body
(1) hole (1c) on the end plate (1b) of one end enters the inner inner phase with the eddy current type air flue of the eddy current type air flue
It is logical.
4. according to a kind of vortex type silencer described in claim 3, it is characterized in that：Described air inlet pipe (2) the inner is provided with use
The diversion short tube (2b) being oriented in air-flow, the outlet of diversion short tube (2b) is towards the direction of noise air current flow, diversion short tube
The section of (2b) outlet is less than the inner sectional area of eddy current type air flue (3).
5. according to a kind of vortex type silencer described in claim 1, it is characterized in that：Described air inlet pipe (2) the inner is by the snail
Through hole (1d) on the scroll casing shape component (1a) of housing enters to be connected and phase in volute body with the inner end wall of the eddy current type air flue
Logical, the inner outlet of air inlet pipe (2) is less than towards the direction of noise air current flow, the section of described air inlet pipe (2) the inner outlet
The inner sectional area of eddy current type air flue (3).
6. according to a kind of vortex type silencer described in claim 1, it is characterized in that：Enter when to the larger pneumatic noise of throughput
When row is eliminated the noise, needs larger gas channel section, sound absorption is set in the air stream outlet (3a) of eddy current type air flue (3) outer end
Plate (3b).
7. according to a kind of vortex type silencer described in claim 6, it is characterized in that：The sound absorption plate (3b) includes plate
(3c), the two ends of plate (3c) are connected with the end plate (1b) at volute body two ends respectively, and the plate face of plate (3c) is provided with absorbent treatment.
8. according to a kind of vortex type silencer described in claim any one of 1-7, it is characterized in that：First sound absorption structure layer (4)
Including perforated plate (4a), perforated plate (4a) is connected with volute body (1), the sky between perforated plate (4a) and volute body (1) internal face
Sound-absorbing material (4c) is provided with chamber (4b).
9. according to a kind of vortex type silencer described in claim any one of 1-7, it is characterized in that：First sound absorption structure layer (4)
Including microwell plate (4d), microwell plate (4d) is connected with volute body (1), is had time between microwell plate (4d) and volute body (1) internal face
Gap (4e).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364012.3U CN206471117U (en) | 2016-12-13 | 2016-12-13 | A kind of vortex type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621364012.3U CN206471117U (en) | 2016-12-13 | 2016-12-13 | A kind of vortex type silencer |
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| Publication Number | Publication Date |
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| CN206471117U true CN206471117U (en) | 2017-09-05 |
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ID=59710872
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| CN201621364012.3U Active CN206471117U (en) | 2016-12-13 | 2016-12-13 | A kind of vortex type silencer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486108A (en) * | 2016-12-13 | 2017-03-08 | 长沙奥邦环保实业有限公司 | Vortex type silencer |
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2016
- 2016-12-13 CN CN201621364012.3U patent/CN206471117U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106486108A (en) * | 2016-12-13 | 2017-03-08 | 长沙奥邦环保实业有限公司 | Vortex type silencer |
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