CN206282606U - Wave cancellation formula muffler - Google Patents
Wave cancellation formula muffler Download PDFInfo
- Publication number
- CN206282606U CN206282606U CN201621411285.9U CN201621411285U CN206282606U CN 206282606 U CN206282606 U CN 206282606U CN 201621411285 U CN201621411285 U CN 201621411285U CN 206282606 U CN206282606 U CN 206282606U
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- CN
- China
- Prior art keywords
- sound guide
- guide tube
- dividing plate
- hole
- outer tube
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- 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.)
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Abstract
The utility model is related to high velocity air vibration-type muffler, and in particular to a kind of wave cancellation formula muffler.It includes outer tube, upper sound guide tube, lower sound guide tube and is located at the overhead gage and lower baffle plate at outer tube two ends respectively, it is characterised in that be equipped with sound guide tube jack on the lower baffle plate and the overhead gage；The upper sound guide tube the latter half is extend into inside the outer tube through the sound guide tube jack of the overhead gage, and the lower sound guide tube top half is extend into inside the outer tube through the sound guide tube jack of the lower baffle plate；Noise reduction board component is provided with the outer tube；The lower sound guide tube upper end is touched with the acoustical panel attached components, and the upper sound guide tube lower end is touched with the acoustical panel attached components；This equipment can significantly carry out wave cancellation, and the destruction that sound is caused is reduced to the rank harmless to mankind structural cost low cost simultaneously, and simple structure stress defect is small.
Description
Technical field
The utility model is related to high velocity air vibration-type muffler, and in particular to a kind of wave cancellation formula muffler.
Background technology
High pressure gas emptying noise is different from the noise of general Fan Devices exhaust outlet.The noise source of blower fan is in it
Portion, is the rotational noise and eddy current crack of impeller and air interaction generation, then is outwards propagated from by exhaust outlet.And put
Null device inside does not have noise source, noise source just on exhaust pipe mouth, or more specifically outside Pai Kou sections.It is by
The gas shock sprayed in high speed and shearing surrounding static air, cause violent gas to disturb and produce.This noise claims
It is jet noise.
In Aero-Space, in the field such as automobile making and chemical industry metallurgical, either interim supercharging equipment or high-pressure air source
Pipeline all must after the work is completed carry out pressure release treatment, such as Liquid-fuel tank booster.Supersonic speed exhaust noise sound
Power stage is mostly in more than 120dB, it may be clearly seen that, supersonic speed exhaust noise is very big for the damage of human ear.So
This jet noise, is the major source of pollutant and potential safety hazard during various correlation tests, normal operation to testing equipment,
The health and test site internal and external environment of test and test personnel are all totally unfavorable.On the other hand, due to supersonic speed extraction flow
Greatly, the sound pressure level of noise is high, and the sound intensity, acoustical power are big, and the research of sound-attenuating system also must be considered that supersonic speed exhausting silencer
The architectural characteristic of the anti-high velocity air impact of device.
Utility model content
Big for supersonic speed extraction flow, the sound pressure level of noise is high, the sound intensity, acoustical power are big, and serious to people's injury of ear shows
As the utility model provides a kind of wave cancellation formula muffler, and its technical scheme is：
A kind of wave cancellation formula muffler, including outer tube, upper sound guide tube, lower sound guide tube and outer tube two is located at respectively
Sound guide tube jack is equipped with the overhead gage and lower baffle plate at end, the lower baffle plate and the overhead gage；The upper sound guide tube lower half
The sound guide tube jack for partially passing through the overhead gage is extend into inside the outer tube, and the lower sound guide tube top half passes through institute
The sound guide tube jack for stating lower baffle plate is extend into inside the outer tube；Noise reduction board component is provided with the outer tube；Led under described
Sound tube upper end is touched with the acoustical panel attached components, and the upper sound guide tube lower end is touched with the acoustical panel attached components；
The noise reduction board component, including some first dividing plates parallel with the outer tube sagittal plane and institute is located at vertically
The second partition between the first dividing plate is stated, be divided into for first dividing plate with the junction of the second partition by first dividing plate
Two regions, array sets through hole on one of region, and array offers through hole on the second partition；Adjacent described
The through hole on through hole on one dividing plate is set on the second partition heteropleural
Preferably, the first bulkhead through-hole area is the 25%-35% of the first dividing plate area.
Preferably, the first bulkhead through-hole hole wall and the first baffle shaft are in 15 ° of -30 ° of angles.
Preferably, array offers through hole, the lower sound guide tube top half on the upper sound guide tube the latter half tube wall
Array is provided with through hole on tube wall.
This equipment can significantly carry out wave cancellation, and it is same that the destruction that sound is caused is reduced to the rank harmless to the mankind
When structural cost low cost, simple structure stress defect is small.
Brief description of the drawings
Fig. 1 is the wave cancellation formula muffler dimensional structure diagram of embodiment 1；
Fig. 2 is the wave cancellation formula muffler internal structure schematic perspective view of embodiment 1；
Fig. 3 is the circular bulkheads dimensional structure diagram of embodiment 2；
Upper sound guide tube 1, sound wave guide pipe 1-1, lower sound guide tube 2, outer tube 3, overhead gage 4, lower baffle plate 5, noise reduction board component
6th, the first dividing plate 6-1, second partition 6-2.
Specific embodiment
Embodiment 1
As depicted in figs. 1 and 2, a kind of wave cancellation formula muffler, including outer tube 3, upper sound guide tube 1, the and of lower sound guide tube 2
The overhead gage 4 and lower baffle plate 5 at the two ends of outer tube 3 are located at respectively, and leading note is equipped with the lower baffle plate 5 and the overhead gage 4
Pipe jack；The latter half of upper sound guide tube 1 is extend into inside the outer tube 3 through the sound guide tube jack of the overhead gage 4,
The top half of lower sound guide tube 2 is extend into inside the outer tube 3 through the sound guide tube jack of the lower baffle plate 5；It is described outer
Noise reduction board component 6 is provided with sleeve pipe 3；The upper end of lower sound guide tube 2 is in contact with the noise reduction board component 6, the upper sound guide tube 1
Lower end is in contact with the noise reduction board component 6；
The noise reduction board component 6, including three first dividing plate 6-1s parallel with the sagittal plane of the outer tube 3 and vertically
The junction of second partition 6-2, the first dividing plate 6-1 and the second partition 6-2 between the first dividing plate 6-1
The first dividing plate 6-1 is divided into two regions, array sets through hole on one of region, the second partition 6-2 goes into battle
Row offer through hole；The through hole on through hole on adjacent the first dividing plate 6-1 is set on the second partition 6-2 heteropleurals
First dividing plate and outer tube are excessive dispensing, stress each other should greatly with the maximum of sound wave under institute use environment
The corresponding material vibrations coefficient of amplitude.
Sound wave is transmitted from bottom to top, first via lower sound guide tube spread, then by the first dividing plate of bottom, after pass through
Second partition is crossed, then is then the first dividing plate of the top followed by next second partition by middle central dividing plate,
Drawn via upper sound guide tube again.Sound wave is repeatedly inclined in communication process to carry out interference cancellation each other.Further after decay again
Betray and.It is enough to the destruction that sound is caused to be reduced to the rank harmless to mankind structural cost low cost simultaneously, structure letter
Single stress defect is small.
Embodiment 2
As shown in figure 3, on the basis of embodiment 1；The first dividing plate 6-1 via areas are the first dividing plate area
25%-35%；The first dividing plate 6-1 through holes hole wall is in 15 ° of -30 ° of angles with baffle shaft；The latter half of upper sound guide tube 1
Array offers through hole on tube wall, and array is provided with through hole on the top half tube wall of the lower sound guide tube 2.
The program equivalent to limited on semi-circular region in through-hole rate, i.e. semicircular area ensure more than 50 percent
Less than 70 percent through-hole rate.
Sound wave guide pipe can be set in exit, it is to avoid be directly directed to user, rounded tabs through hole hole wall and catch
Axially form an angle, form the hole of taper mesa-shaped, can preferably upset sound.It is allowed to propagate the general of cycle phase fluctuation counteracting
Rate increases.
Embodiment described above is only that the preferred embodiment of the present apparatus is described, not to the model of the present apparatus
Enclose and be defined, under the premise of present apparatus design spirit is not departed from, this area ordinary skill technical staff does to the technical program
The various modifications for going out and improvement, all should fall into the protection domain of claims determination of the present apparatus.
Claims (4)
1. a kind of wave cancellation formula muffler, including outer tube (3), upper sound guide tube (1), lower sound guide tube (2) and it is located at respectively
The overhead gage (4) and lower baffle plate (5) at outer tube (3) two ends, it is characterised in that on the lower baffle plate (5) and the overhead gage (4)
It is equipped with sound guide tube jack；Upper sound guide tube (1) the latter half extend into institute through the sound guide tube jack of the overhead gage (4)
Outer tube (3) inside is stated, lower sound guide tube (2) top half extend into institute through the sound guide tube jack of the lower baffle plate (5)
State outer tube (3) internal；Noise reduction board component (6) is provided with the outer tube (3)；Lower sound guide tube (2) upper end disappears with described
Soundboard component (6) is in contact, and upper sound guide tube (1) lower end is in contact with the noise reduction board component (6)；
The noise reduction board component (6), including some first dividing plates (6-1) parallel with the outer tube (3) sagittal plane and perpendicular
Directly it is located at the second partition (6-2) between first dividing plate (6-1), first dividing plate (6-1) and the second partition (6-
2) first dividing plate (6-1) is divided into two regions by junction, and array sets through hole, described second on one of region
Array offers through hole on dividing plate (6-2)；Through hole on adjacent first dividing plate (6-1) is on the second partition (6-
2) heteropleural is set.
2. a kind of wave cancellation formula muffler according to claim 1, it is characterised in that first dividing plate (6-1) is led to
Hole area is the 25%-35% of the first dividing plate area.
3. a kind of wave cancellation formula muffler according to claim 2, it is characterised in that first dividing plate (6-1) is led to
The axle of hole hole wall and the first dividing plate (6-1) is in 15 ° of -30 ° of angles.
4. a kind of wave cancellation formula muffler according to claim 1, it is characterised in that upper sound guide tube (1) lower half
Array offers through hole on section tubular wall, and array is provided with through hole on lower sound guide tube (2) the top half tube wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621411285.9U CN206282606U (en) | 2016-12-21 | 2016-12-21 | Wave cancellation formula muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621411285.9U CN206282606U (en) | 2016-12-21 | 2016-12-21 | Wave cancellation formula muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206282606U true CN206282606U (en) | 2017-06-27 |
Family
ID=59074132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621411285.9U Active CN206282606U (en) | 2016-12-21 | 2016-12-21 | Wave cancellation formula muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206282606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114157943A (en) * | 2021-12-08 | 2022-03-08 | 深圳市拙野创意有限公司 | Diversified stereo set mounting structure and stereo set based on this structure |
-
2016
- 2016-12-21 CN CN201621411285.9U patent/CN206282606U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114157943A (en) * | 2021-12-08 | 2022-03-08 | 深圳市拙野创意有限公司 | Diversified stereo set mounting structure and stereo set based on this structure |
| CN114157943B (en) * | 2021-12-08 | 2024-03-19 | 深圳市拙野创意有限公司 | Multidirectional sound installation structure and sound based on same |
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