CN206236422U - A kind of silencing means for reducing boundary space requirement - Google Patents
A kind of silencing means for reducing boundary space requirement Download PDFInfo
- Publication number
- CN206236422U CN206236422U CN201621271738.2U CN201621271738U CN206236422U CN 206236422 U CN206236422 U CN 206236422U CN 201621271738 U CN201621271738 U CN 201621271738U CN 206236422 U CN206236422 U CN 206236422U
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- CN
- China
- Prior art keywords
- helmholtz resonator
- connecting tube
- helmholtz
- cavity
- space requirement
- Prior art date
- 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.)
- Expired - Fee Related
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model is related to a kind of silencing means for reducing boundary space requirement, including main line, the helmholtz resonator connecting tube being connected with main line and the helmholtz resonance unit being connected with helmholtz resonator connecting tube, the cavity connecting tube that the helmholtz resonance unit includes helmholtz resonator body to be connected with helmholtz resonator body phase and laid around the external edge of helmholtz resonator, described helmholtz resonator connecting tube is Multi-section retractable spiral connecting tube, under in working order, helmholtz resonance unit is set to eliminate the noise of different frequency by the length for adjusting helmholtz resonator connecting tube.Compared with prior art, the utility model light structure, boundary space requirement is small, it is easy to meet acoustical demands, and noise elimination scope is wide, economical and practical, with good application prospect.
Description
Technical field
The utility model belongs to auto-parts technical field, is related to a kind of silencing means, is used for more particularly, to one kind
Reduce the silencing means of boundary space requirement.
Background technology
Automobile plays very important effect in the development in city, and with the development of the city, the quantity of automobile is increasingly
Many, noise problem is also very serious；The good muffler of automobile installation quality, can not only reduce the noise dirt come to urban belt
Dye, and the comfort level of vapour passenger inside the vehicle can be improved, bring good driving experience.Therefore, the problem on automobile noise,
Increasingly paid attention to by main engine plants and industry.Wherein, low-frequency noise is very big to the health effect of environment and people.For low frequency
Noise is usually taken arrangement collateral branch muffler, and such as helmholtz resonator measure is solved.Helmholtz resonator is by one
The chamber composition of the constant volume arranged in connecting tube and connection tube head.Diameter, the length of cavity volume size and connecting tube are all
Affect centre frequency.However, the cavity volume of usually used helmholtz resonator is often very big, and connecting tube is straight
Pipe and more long, this space requirement to cabin border is very high, and it is simultaneously unfavorable for the arrangement of helmholtz resonator.
The content of the invention
The purpose of this utility model be exactly provided for the defect for overcoming above-mentioned prior art to exist it is a kind of it is easy for installation,
Light structure, scale error are small, space hold small volume, and the noise reduction for reducing boundary space requirement of good muffling effect is filled
Put.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of silencing means for reducing boundary space requirement, including the Hai Muhuo that main line is connected with main line
Hereby resonator connecting tube and the helmholtz resonance unit being connected with helmholtz resonator connecting tube, the Helmholtz are humorous
The unit that shakes is connected and around helmholtz resonator body including helmholtz resonator body with helmholtz resonator body phase
The cavity connecting tube that outer rim is laid, described helmholtz resonator connecting tube is Multi-section retractable spiral connecting tube, in work
Under state, helmholtz resonance unit is set to eliminate making an uproar for different frequency by the length for adjusting helmholtz resonator connecting tube
Sound.
Described helmholtz resonator body is in cube cavity, cylinder cavity, round platform cavity or ball-type cavity
One kind.
Described helmholtz resonator body is positive Cubic cavity.
Described cavity connecting tube one end connects with helmholtz resonator body phase, and the other end is along positive Cubic cavity
Lateral surface is laid in around helmholtz resonator body in coil-shape and is connected with helmholtz resonator connecting tube.
Described cavity connecting tube uses arc transition with the junction of helmholtz resonator connecting tube.
Described cavity connecting tube when the lateral surface around helmholtz resonator body is laid, adopt by the position of right angle bending
Use arc transition.
It is solid using integrated injection forming or by welding between described helmholtz resonator connecting tube and main line
It is scheduled on together.
The volumetric values of described helmholtz resonator body and helmholtz resonator connecting tube and cavity connecting tube it is total
Length value is identical.
When actually used, by the size, diameter and the helmholtz resonance that adjust helmholtz resonator connecting tube
The volume of cavity can carry out noise reduction treatment for purpose centre frequency.Helmholtz resonator connecting tube uses helical structure,
Required according to noise reduction, length can significantly extend so that noise reduction frequency can be easily controlled in below 200Hz；While nurse is suddenly
Hereby the volume of resonant cavity can be adjusted, it is ensured that the acoustical absorptivity of purpose centre frequency.
Compared with prior art, the utility model has the characteristics that：
1) boundary space requirement is small：Helmholtz resonator connecting tube uses Multi-section retractable helical structure, limited
In space, the length of helmholtz resonator connecting tube can significantly extend, and border space requirement is greatly reduced；
2) be content with very little acoustical demands：The convenient adjustment control of the length of helmholtz resonator connecting tube, Helmholtz is humorous
The volume of cavity of shaking convenient is adjusted, it is easy to meet acoustical demands；
3) noise elimination scope is wide：Connecting tube required for helmholtz resonator noise reduction frequency is lower is more long, and cavity volume is got over
Greatly, helmholtz resonator connection length of tube can significantly extend in the utility model, and volume is convenient to be adjusted, and noise reduction frequency can be with
It is lower；When the volumetric values of helmholtz resonator body are identical with the length value of helmholtz resonator connecting tube, now noise reduction dress
Change is put as 1/4 wavelength tube, noise reduction frequency is higher, and muffler noise elimination scope is wide；
4) technical maturity is simple：Can be according to particular condition in use, by helmholtz resonator connecting tube and main line from mould
The interior injection moulding integrated molding of tool first passes through blow molding, then is welded as a whole with main line.
Brief description of the drawings
Fig. 1 is the utility model structural representation；
Description of symbols in figure：
1-main line, 2-helmholtz resonator connecting tube, 3-helmholtz resonator body, 4-cavity connecting tube,
5-arc transition.
Specific embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in figure 1, a kind of silencing means for reducing boundary space requirement, including main line 1 and the phase of main line 1
The helmholtz resonator connecting tube 2 of connection and the helmholtz resonance list being connected with helmholtz resonator connecting tube 2
Unit, the helmholtz resonance unit include helmholtz resonator body 3 be connected with helmholtz resonator body 3 and around
The cavity connecting tube 4 that the outer rim of helmholtz resonator body 3 is laid, helmholtz resonator connecting tube 2 is Multi-section retractable spiral
Connecting tube, in working order under, by the length for adjusting helmholtz resonator connecting tube 2 make helmholtz resonance unit eliminate
The noise of different frequency.
In the present embodiment, helmholtz resonator body 3 is positive Cubic cavity.The one end of cavity connecting tube 4 and Helmholtz
Resonant cavity 3 is connected, and the other end is laid in helmholtz resonance along the lateral surface of helmholtz resonator body 3 in coil-shape
It is connected around cavity 3 and with helmholtz resonator connecting tube 2.Cavity connecting tube 4 and helmholtz resonator connecting tube 2
Junction uses arc transition 5.When the lateral surface around helmholtz resonator body 3 is laid, right angle bends cavity connecting tube 4
Position use arc transition 5.
Integrated injection forming is used between helmholtz resonator connecting tube 2 and main line 1.Helmholtz resonator body
3 volumetric values are identical with the overall length angle value of helmholtz resonator connecting tube 2 and cavity connecting tube 4.
When actually used, by the size, diameter and the helmholtz resonance that adjust helmholtz resonator connecting tube 2
The volume of cavity 3 can carry out noise reduction treatment for purpose centre frequency.Helmholtz resonator connecting tube 2 uses spiral knot
Structure, requires, length can significantly extend so that noise reduction frequency can be easily controlled in below 200Hz according to noise reduction；While nurse
Hereby the volume of resonant cavity 3 can be adjusted suddenly, it is ensured that the acoustical absorptivity of purpose centre frequency.
Embodiment 2：
In the present embodiment, helmholtz resonator body 3 is cylinder cavity.Remaining is with embodiment 1.
Embodiment 3：
In the present embodiment, helmholtz resonator body 3 is round platform cavity.Remaining is with embodiment 1.
Embodiment 4：
In the present embodiment, helmholtz resonator body 3 is ball-type cavity.Remaining is with embodiment 1.
The above-mentioned description to embodiment is to be understood that and use practicality for ease of those skilled in the art
It is new.Person skilled in the art obviously can easily make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within protection domain of the present utility model.
Claims (7)
1. a kind of silencing means for reducing boundary space requirement, it is characterised in that be connected with main line including main line
Helmholtz resonator connecting tube and the helmholtz resonance unit that is connected with helmholtz resonator connecting tube, the last of the twelve Earthly Branches
Mu Huozi resonant elements are connected and around Helmholtz including helmholtz resonator body with helmholtz resonator body phase
The cavity connecting tube that resonant cavity outer rim is laid, described helmholtz resonator connecting tube is the connection of Multi-section retractable spiral
Pipe, in working order under, eliminate helmholtz resonance unit by the length for adjusting helmholtz resonator connecting tube different
The noise of frequency.
2. a kind of silencing means for reducing boundary space requirement according to claim 1, it is characterised in that described
Helmholtz resonator body is the one kind in a cube cavity, cylinder cavity, round platform cavity or ball-type cavity.
3. a kind of silencing means for reducing boundary space requirement according to claim 2, it is characterised in that described
Helmholtz resonator body is positive Cubic cavity.
4. a kind of silencing means for reducing boundary space requirement according to claim 3, it is characterised in that described
Cavity connecting tube one end connects with helmholtz resonator body phase, and the other end is in disk along the lateral surface of helmholtz resonator body
It is laid in around helmholtz resonator body around shape and is connected with helmholtz resonator connecting tube.
5. a kind of silencing means for reducing boundary space requirement according to claim 4, it is characterised in that described
Cavity connecting tube uses arc transition with the junction of helmholtz resonator connecting tube.
6. a kind of silencing means for reducing boundary space requirement according to claim 4, it is characterised in that described
When the lateral surface around helmholtz resonator body is laid, the position of right angle bending uses arc transition to cavity connecting tube.
7. a kind of silencing means for reducing boundary space requirement according to any one of claim 1 to 6, its feature exists
In using integrated injection forming or being fixed by welding in one between described helmholtz resonator connecting tube and main line
Rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271738.2U CN206236422U (en) | 2016-11-25 | 2016-11-25 | A kind of silencing means for reducing boundary space requirement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271738.2U CN206236422U (en) | 2016-11-25 | 2016-11-25 | A kind of silencing means for reducing boundary space requirement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206236422U true CN206236422U (en) | 2017-06-09 |
Family
ID=58980934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621271738.2U Expired - Fee Related CN206236422U (en) | 2016-11-25 | 2016-11-25 | A kind of silencing means for reducing boundary space requirement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206236422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114550685A (en) * | 2022-01-25 | 2022-05-27 | 哈尔滨理工大学 | Ventilating duct silencer based on folding type rough neck pipe Helmholtz resonant cavity |
| CN115780227A (en) * | 2022-10-27 | 2023-03-14 | 西北核技术研究所 | Automatic frequency modulation acoustic effect cabin based on Helmholtz resonant cavity and frequency modulation method |
-
2016
- 2016-11-25 CN CN201621271738.2U patent/CN206236422U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114550685A (en) * | 2022-01-25 | 2022-05-27 | 哈尔滨理工大学 | Ventilating duct silencer based on folding type rough neck pipe Helmholtz resonant cavity |
| CN114550685B (en) * | 2022-01-25 | 2022-09-02 | 哈尔滨理工大学 | Ventilating duct silencer based on folding type rough neck pipe Helmholtz resonant cavity |
| CN115780227A (en) * | 2022-10-27 | 2023-03-14 | 西北核技术研究所 | Automatic frequency modulation acoustic effect cabin based on Helmholtz resonant cavity and frequency modulation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20201125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |