CN207993474U - A kind of resistive diversion muffler of chip - Google Patents
A kind of resistive diversion muffler of chip Download PDFInfo
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- CN207993474U CN207993474U CN201820125368.4U CN201820125368U CN207993474U CN 207993474 U CN207993474 U CN 207993474U CN 201820125368 U CN201820125368 U CN 201820125368U CN 207993474 U CN207993474 U CN 207993474U
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- damper element
- resistive
- housing component
- conducting element
- damper
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a kind of resistive diversion mufflers of chip, its key points of the technical solution are that including both ends open and hollow housing component, the damper element in housing component, the shape of damper element is adapted with the shape of housing component, damper element both ends open and it is hollow, be formed with gas channel along the length direction of damper element；Two open ends of damper element are both provided with cyclic annular fixinig plate, fixinig plate is set between housing component and damper element, housing component is fixedly connected with fixinig plate with the end of the open end of damper element, and closed resistance cavity is formed between housing component and damper element, sound-absorbing material is provided in resistance cavity；The side wall of the close gas channel of damper element is equipped with cricoid resistive conducting element, and resistive conducting element is set to one end of the close air stream outlet of damper element.The setting of resistive conducting element reduces the drag losses and reproduced air-flow noise when air passes through gas channel, improves its acoustic characteristics.
Description
Technical field
The utility model is related to a kind of silencer, more particularly to a kind of resistive diversion muffler of chip.
Background technology
Dissipative muffler is propagated in porous sound-absorbing material or sound absorption structure using sound wave, converts acoustic energy because rubbing
It is dissipated for thermal energy, so that the noise along pipe transmmision is decayed with distance, to reach the silencer of noise elimination purpose, chip disappears
Sound device is one kind of dissipative muffler.
Existing strip-type silencer the problem of there is larger reproduced air-flow noises, since high-speed flow passes through silencer
When, the friction of air-flow and noise elimination pipe surface causes it to generate very high aerodynamic noise, acoustical power and the air-flow stream of this noise like
Six powers of speed are directly proportional, thus, when air velocity is higher, it will generate very high air-flow and regenerate noise.
Utility model content
The purpose of this utility model is to provide a kind of resistive diversion muffler of chip, by the way that resistive lead is arranged in air stream outlet
Part is flowed, to further decrease the drag losses and reproduced air-flow noise of silencer.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of resistive water conservancy diversion of chip
Silencer, including both ends open and hollow housing component, the damper element in housing component, the shape of damper element and housing component
Shape is adapted, damper element both ends open and it is hollow, be formed with gas channel, the side of damper element along the length direction of damper element
Opening is air flow inlet, and another side opening is air stream outlet, and two open ends of damper element are both provided with cyclic annular fixinig plate, fixed
Piece is set between housing component and damper element, and housing component is fixedly connected with fixinig plate with the end of the open end of damper element, in shell
It is formed with closed resistance cavity between body part and damper element, sound-absorbing material is provided in resistance cavity；
The side wall of the close gas channel of damper element is equipped with cricoid resistive conducting element, and resistive conducting element is set to damper element
Close air stream outlet one end.
By using above-mentioned technical proposal, sound-absorbing material is set in the resistance cavity between housing component and damper element, is obtained
Obtained the characteristic of resistance noise reduction；By the resistive conducting element of end set of the close air stream outlet in damper element, gas channel
Cross-sectional area is gradually reduced along the flow direction of air, reduces drag losses when air passes through gas channel and air-flow again
Raw noise, improves its acoustic characteristics；Noise is stopped in the transmittance process along gas channel by resistive conducting element simultaneously, passes through
After crossing multiple reflections and reducing intensity, is passed from air stream outlet, further enhance the noise elimination effect of silencer.
Preferably, resistive conducting element is hollow and interior sets sound-absorbing material.
By using above-mentioned technical proposal, sound-absorbing material is set in resistive conducting element, during resistive conducting element can absorb
The noise of high frequency has certain resistance noise reduction characteristic.
Preferably, resistive conducting element is made with damper element of perforated plate.
By using above-mentioned technical proposal, the acoustic resistance and acoustic reactance having using perforated plate itself itself have preferable
Noise reduction capability.
Preferably, resistive conducting element is integrally formed with damper element.
By using above-mentioned technical proposal, integrally formed mode makes the combination of resistive conducting element and damper element more
Closely.
Preferably, resistive conducting element is set as split type with damper element, and resistive conducting element cross section is triangular in shape comprising two
One right-angle side of a right-angle side and a bevel edge, resistive conducting element is parallel with the side wall of close anechoic sheet of damper element and fixed
Connection, another right-angle side are located at fixinig plate in same perpendicular, side of the bevel edge with respect to the close anechoic sheet of damper element
Wall is obliquely installed and is formed with angle.
By using above-mentioned technical proposal, the cavity inside the resistive conducting element of integral type is interconnected with resistance cavity,
Sound-absorbing material in resistance cavity is influenced by its dead weight, is easy to sink in the cavity of resistive conducting element, causes resistance empty
The case where intracavitary sound-absorbing material is unevenly distributed occurs, and split type setting can avoid the appearance of such case.
Preferably, the bevel edge of resistive conducting element is arcuation side.
By using above-mentioned technical proposal, compared to straight line, arcuation side is more apparent to the reflecting effect of noise, drop
Effect of making an uproar is more preferable；Simultaneously arcuation side to air-flow have better guide functions so that air-flow along resistive conducting element flowing more
What is added is smooth.
Preferably, the length direction in damper element along housing component is provided with anechoic sheet, the arranged on left and right sides of anechoic sheet and noise elimination
The side wall of part is fixedly connected.
By using above-mentioned technical proposal, upper and lower two gas channels, air are formd between anechoic sheet and damper element
When flowing along gas channel, which forms two resonant spaces, has certain effect to the decrease of noise.
Preferably, multiple reinforced sheets are equipped in resistance cavity, the both ends of reinforced sheet are fixed with housing component and damper element respectively
Resistance cavity is divided into a plurality of cavities unit, sound-absorbing material is equipped in each cavity unit by connection, reinforced sheet.
By using above-mentioned technical proposal, a plurality of cavities unit makes the sound-absorbing material in resistance cavity be divided into mutually
Independent more parts of sound absorptions unit, the proportion of every part of sound absorption unit are smaller, it is not easy to because generating sinking the reason of dead weight.
In conclusion the utility model has the advantages that：
1. by the resistive conducting element of end set of the close air stream outlet in damper element, reduces air and pass through air-flow
Drag losses when channel and reproduced air-flow noise improve its acoustic characteristics；
2. noise is stopped in the transmittance process along gas channel by resistive conducting element, reduced by multiple reflections
It after intensity, is passed from air stream outlet, further enhances the noise elimination effect of silencer, protect environment.
Description of the drawings
Fig. 1 is the overall structure diagram of the silencer；
Fig. 2 is the sectional view for highlighting silencer internal structure；
Fig. 3 is the sectional view for highlighting resistive conducting element arcuation side；
Fig. 4 is the sectional view for highlighting the reinforced sheet in resistance cavity.
In figure, 1, housing component；11, air flow inlet；12, air stream outlet；2, damper element；3, anechoic sheet；4, fixinig plate；5, it inhales
Sound material；6, gas channel；7, resistive conducting element；71, right-angle side；72, bevel edge；8, reinforced sheet.
Specific implementation mode
The utility model is described in further detail below in conjunction with attached drawing.The identical attached drawing of wherein identical parts
Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper", "lower", " bottom
Face " and " top surface " refer to that the direction in attached drawing, word "inner" and "outside" are referred respectively to towards or away from particular elements geometry
The direction at center.
Embodiment 1
A kind of resistive diversion muffler of chip, as depicted in figs. 1 and 2, including both ends open and hollow rectangular-shape shell
Body part 1, the damper element 2 inside housing component 1 and the anechoic sheet 3 inside damper element 2.Damper element 2 is in hollow length
Cube shape shell is arranged concentrically with housing component 1, the both ends open of damper element 2 and two open ends are equipped with consolidating for rectangular ring
Stator 4, fixinig plate 4 are fixedly connected between housing component 1 and damper element 2, the both ends of housing component 1 and damper element 2 with fixinig plate 4
It is fixedly connected, to be formed with closed resistance cavity between housing component 1 and damper element 2, and is equipped with sound absorption in resistance cavity
Material 5, sound-absorbing material 5 are mineral wool.It is right to utilize the characteristic of resistance noise reduction by the way that sound-absorbing material 5 is arranged in resistance cavity
The noise of medium-high frequency has certain assimilation effect.
In conjunction with Fig. 1, damper element 2 is made of perforated plate, with the acoustic reactance and acoustic resistance having using perforated plate, increases silencer
Noise Reduction.Anechoic sheet 3 rectangular is arranged along the length direction of housing component 1 in the damper element 2, anechoic sheet 3 it is left and right
Both sides are fixedly connected with the side wall of damper element 2, and in conjunction with Fig. 2, two upper and lower gas are formed between anechoic sheet 3 and damper element 2
Circulation road 6, gas channel 6 allow air-flow to flow through（It is shown by arrow in air current flow direction figure）.One side opening of damper element 2
For air flow inlet 11, another side opening is air stream outlet 12.
In conjunction with Fig. 2, the side wall of the close anechoic sheet 3 of damper element 2 is equipped with cricoid resistive conducting element 7, resistive conducting element 7
Set on the end of the close air stream outlet 12 of damper element 2, resistive conducting element 7 is made of perforated plate, cross section it is triangular in shape and
It is hollow, sound-absorbing material 5 is equipped in resistive conducting element 7 to obtain the characteristic of resistance noise reduction.Resistive conducting element 7 includes two right angles
One right-angle side 71 of side 71 and a bevel edge 72, resistive conducting element 7 it is parallel with the side wall of close anechoic sheet 3 of damper element 2 and
It is fixedly connected, another right-angle side 71 is located at fixinig plate 4 in same perpendicular, and bevel edge 72 is close with respect to damper element 2
The sidewall slope of anechoic sheet 3 is arranged and shape forms an angle, ranging from 30-60 ° of the angle.
Pass through the resistive conducting element 7 of the end set of the close air stream outlet 12 in damper element 2, the cross section of gas channel 6
Product is gradually reduced along the flow direction of air, and the drag losses and air-flow regeneration when reducing air by gas channel 6 are made an uproar
Sound improves its acoustic characteristics.Noise is stopped in the transmittance process along gas channel 6 by resistive conducting element 7 simultaneously, passes through
It after multiple reflections reduce intensity, is passed from air stream outlet 12, further enhances the noise elimination effect of silencer, protect
Environment.
Resistive conducting element 7 and damper element 2 can be integrally formed, and combination that both integrally formed mode makes is more
Closely.But it is preferably split type, since the cavity inside the resistive conducting element 7 of integral type is interconnected with resistance cavity, resist
Property cavity in sound-absorbing material 5 influenced by its dead weight, be easy to sink in the cavity of resistive conducting element 7, cause resistance empty
Sound-absorbing material more than 5 of the intracavitary at resistive conducting element 7, and go out far from the few situation of the sound-absorbing material 5 at resistive conducting element 7
Existing, the non-uniform distribution in resistance cavity of sound-absorbing material 5 can reduce the assimilation effect to noise.
In conjunction with Fig. 3, as a preferred mode, the bevel edge 72 of resistive conducting element 7 is set as arcuation side, compared to straight line
Side, arcuation side are more apparent to the reflecting effect of noise, and noise reduction is more preferable；Arcuation side has air-flow and preferably leads simultaneously
Stream act on so that air-flow along resistive conducting element 7 flowing more smoothly.
Embodiment 2
Difference lies in the differences of resistance cavity inside structure with embodiment 1 for embodiment 2.
Since during silencer use, the sound-absorbing material 5 in resistance cavity is influenced by conducting oneself with dignity, it is easy anti-
Property cavity in sink so that the noise reduction of silencer reduces.
In conjunction with Fig. 4, be equipped with multiple reinforced sheets 8 in resistance cavity, the both ends of reinforced sheet 8 respectively with housing component 1 and damper element 2
Be fixedly connected, reinforced sheet 8 in the tilted setting of resistance cavity, adjacent two reinforced sheets 8 and housing component 1 or damper element 2 it
Between form the cavity unit of triangle, be equipped with sound-absorbing material 5 in each cavity unit.A plurality of cavities unit makes resistance cavity
Interior sound-absorbing material 5 is divided into mutually independent more parts of sound absorptions unit, and the proportion of every part of sound absorption unit is smaller, it is not easy to because
The reason of dead weight, generates sinking.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but
As long as all being protected by Patent Law in the right of the utility model.
Claims (8)
1. a kind of resistive diversion muffler of chip, including both ends open and hollow housing component（1）, be set to housing component（1）Interior
Damper element（2）, damper element（2）Shape and housing component（1）Shape be adapted, damper element（2）Both ends open and it is hollow, along disappearing
Sound part（2）Length direction be formed with gas channel（6）, damper element（2）A side opening be air flow inlet（11）, the other side is opened
Mouth is air stream outlet（12）, it is characterised in that：Damper element（2）Two open ends be both provided with cricoid fixinig plate（4）, fixed
Piece（4）Set on housing component（1）With damper element（2）Between, housing component（1）With damper element（2）Open end end with fixation
Piece（4）It is fixedly connected, in housing component（1）With damper element（2）Between be formed with closed resistance cavity, be provided in resistance cavity
Sound-absorbing material（5）；
Damper element（2）Close gas channel（6）Side wall be equipped with cricoid resistive conducting element（7）, resistive conducting element（7）If
In damper element（2）Close air stream outlet（12）One end.
2. the resistive diversion muffler of a kind of chip according to claim 1, it is characterised in that：Resistive conducting element（7）It is hollow
And interior set sound-absorbing material（5）.
3. the resistive diversion muffler of a kind of chip according to claim 2, it is characterised in that：Resistive conducting element（7）With disappear
Sound part（2）It is made of perforated plate.
4. the resistive diversion muffler of a kind of chip according to claim 3, it is characterised in that：Resistive conducting element（7）With disappear
Sound part（2）It is integrally formed.
5. the resistive diversion muffler of a kind of chip according to claim 3, it is characterised in that：Resistive conducting element（7）With disappear
Sound part（2）It is set as split type, resistive conducting element（7）Cross section is triangular in shape comprising two right-angle sides（71）With a bevel edge
（72）, resistive conducting element（7）A right-angle side（71）With damper element（2）Close anechoic sheet（3）Side wall it is parallel and fixed
Connection, another right-angle side（71）With fixinig plate（4）In same perpendicular, bevel edge（72）Opposite damper element（2）'s
Close to anechoic sheet（3）Sidewall slope setting and be formed with angle.
6. the resistive diversion muffler of a kind of chip according to claim 5, it is characterised in that：Resistive conducting element（7）It is oblique
Side（72）For arcuation side.
7. the resistive diversion muffler of a kind of chip according to claim 6, it is characterised in that：Damper element（2）It is interior along shell
Part（1）Length direction be provided with anechoic sheet（3）, anechoic sheet（3）Arranged on left and right sides and damper element（2）Side wall be fixedly connected.
8. the resistive diversion muffler of a kind of chip according to claim 1-7 any one, it is characterised in that：Resistance cavity
It is interior to be equipped with multiple reinforced sheets（8）, reinforced sheet（8）Both ends respectively with housing component（1）And damper element（2）It is fixedly connected, reinforced sheet
（8）Resistance cavity is divided into a plurality of cavities unit, sound-absorbing material is equipped in each cavity unit（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820125368.4U CN207993474U (en) | 2018-01-24 | 2018-01-24 | A kind of resistive diversion muffler of chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820125368.4U CN207993474U (en) | 2018-01-24 | 2018-01-24 | A kind of resistive diversion muffler of chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207993474U true CN207993474U (en) | 2018-10-19 |
Family
ID=63822048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820125368.4U Active CN207993474U (en) | 2018-01-24 | 2018-01-24 | A kind of resistive diversion muffler of chip |
Country Status (1)
| Country | Link |
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| CN (1) | CN207993474U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488833A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN110428800A (en) * | 2019-08-28 | 2019-11-08 | 宝钢空调（泰州）有限公司 | A kind of pre- insulation impedance composite muffler |
| CN111677697A (en) * | 2020-05-06 | 2020-09-18 | 徐州徐工环境技术有限公司 | Motor sweeper fan silencing device |
-
2018
- 2018-01-24 CN CN201820125368.4U patent/CN207993474U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488833A (en) * | 2018-12-12 | 2019-03-19 | 华电重工股份有限公司 | A kind of strip-type silencer |
| CN109488833B (en) * | 2018-12-12 | 2024-04-23 | 华电重工股份有限公司 | Sheet type muffler |
| CN110428800A (en) * | 2019-08-28 | 2019-11-08 | 宝钢空调（泰州）有限公司 | A kind of pre- insulation impedance composite muffler |
| CN111677697A (en) * | 2020-05-06 | 2020-09-18 | 徐州徐工环境技术有限公司 | Motor sweeper fan silencing device |
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