CN208149004U - A kind of compound vehicle air-conditioning duct muffler - Google Patents
A kind of compound vehicle air-conditioning duct muffler Download PDFInfo
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- CN208149004U CN208149004U CN201820535472.0U CN201820535472U CN208149004U CN 208149004 U CN208149004 U CN 208149004U CN 201820535472 U CN201820535472 U CN 201820535472U CN 208149004 U CN208149004 U CN 208149004U
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- muffler
- pipeline
- muffler shell
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Abstract
The utility model discloses a kind of compound vehicle air-conditioning duct mufflers, belong to automobile air conditioning technology field.It includes muffler shell, pipeline is fixed on the muffler shell, it protrudes on the pipeline side wall of the muffler shell and offers multiple holes, the aperture in multiple hole is 5-7mm, spacing between two holes is 10-15mm, and the outer diameter of the muffler shell is 35-45mm, and the outer ring of the muffler shell is coated with sound-proof material, the sound-proof material successively includes adhesive layer, layer of polyester fiber, expanded polyester puigging and nonwoven layer, is equipped with multiple sound-absorption holes in the layer of polyester fiber.Muffler disclosed by the utility model is small in size, light-weight, structure is simple, easy for installation on pipeline, easily operated.
Description
Technical field
The utility model relates to automobile air conditioning technology fields, more specifically, being related to a kind of compound vehicle air-conditioning duct
Muffler.
Background technique
Pipelines of automobile air conditioner refrigerant flowing can generate biggish noise, usually on air-conditioning duct install muffler with
Reduce noise, Chinese Patent Application No.：2016210757972, the applying date：On 09 23rd, 2016, utility model created title
For：A kind of built-in bumper combinatorial structures of vehicle air conditioner, this application discloses a kind of built-in mufflers, belong to automobile
Air-conditioning technical field.This application includes installing to be built-in with a muffler in the hose close to noise source, the built-in noise reduction
Device is the first muffler or the second muffler, and the various combination using muffler built in two kinds, the Shen can be needed according to noise
Please case by the way that muffler combination built in two kinds is arranged close in the hose of noise source, by the energy of its absorption of noise wave,
So as to reduce and eliminate mechanical vibration noise caused by air-conditioning system and pneumatic noise.But the shortcoming of this application
It is：Since built-in muffler is mounted in inside hose, when use, needing to combine in muffler built in two kinds makes
With on the one hand installation is complicated, and the requirement to pipeline is relatively high, and not easy to operate, on the other hand, the erasure effect of built-in muffler is simultaneously
It is undesirable.
Utility model content
Utility model technical problems to be solved
The purpose of the utility model is to overcome in the prior art due to the noise reduction of muffler built-in in pipelines of automobile air conditioner
Effect is poor, and installation is complicated, provides a kind of compound vehicle air-conditioning duct muffler.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model is：A kind of compound vehicle air-conditioning duct noise reduction
Device, including muffler shell are fixed with pipeline on the muffler shell, protrude on the pipeline side wall of the muffler shell and open
Equipped with multiple holes, the aperture in multiple hole is 5-7mm, and the spacing between two holes is 10-15mm, the outer diameter of the muffler shell
For 35-45mm, the outer ring of the muffler shell is coated with sound-proof material, and the sound-proof material successively includes adhesive layer, polyester fiber
Layer, expanded polyester puigging and nonwoven layer are equipped with multiple sound-absorption holes in the layer of polyester fiber.
It is further improved as the utility model, the pipeline runs through the muffler shell.
It is further improved as the utility model, connecting portion one end of the muffler shell and pipeline is equipped with logical
Hole, the other end are equipped with flange flange.
It is further improved as the utility model, the muffler shell is overlapped with the axis of pipeline.
It is further improved as the utility model, the aperture is 5mm, and two pitchs of holes are 10mm, the muffler
The outer diameter of shell is 35mm.
As the further improvement of the utility model, glass fibre is filled in the sound-absorption hole.
Beneficial effect
Using technical solution provided by the utility model, compared with prior art, have the advantages that：
（1）A kind of compound vehicle air-conditioning duct muffler of the utility model, compared with built-in muffler, Novel noise-reduction
The small in size, light-weight of device, structure are simple, and easy for installation on pipeline, easily operated, fluid is propagated in pipeline, pass through pipe
Hole on road flows into and out, and severe friction occurs for fluid and hole wall, so that a part of sound of fluid is converted into interior energy consumption, to reach
To the effect of noise elimination.
（2）Polyester fiber and glass fibre belong to sound-absorbing material, cooperate expanded polyester puigging, have to noise good
Assimilation effect.
Detailed description of the invention
Fig. 1 is a kind of compound vehicle air-conditioning duct muffler structure schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of pipeline；
Fig. 3 is the structural schematic diagram of muffler shell；
Fig. 4 is the structural schematic diagram of silencing cotton；
Fig. 5 is the erasure effect comparison diagram of built-in muffler and Novel muffler（Air-conditioning open state）；
Fig. 6 is the erasure effect comparison diagram of built-in muffler and Novel muffler（Air-conditioning off-mode）；
Fig. 7 be model be respectively 5*10*35,5*10*45,7*10*35 muffler erasure effect comparison diagram（Air-conditioning closes
Machine state）；
Fig. 8 be model be respectively 5*10*45,7*15*45,7*15*35 muffler erasure effect comparison diagram（Air-conditioning closes
Machine state）；
Fig. 9 be model be respectively 5*10*45,5*15*45 muffler erasure effect comparison diagram（Air-conditioning off-mode）；
Figure 10 be model be respectively 7*10*35,7*15*35 muffler erasure effect comparison diagram（Air-conditioning shutdown shape
State）.
Label declaration in schematic diagram：
1, muffler shell；10, through-hole；11, flange flange；2 pipelines；20, hole；3, adhesive layer；4, layer of polyester fiber；5,
Expanded polyester puigging；6, nonwoven layer；40, sound-absorption hole.
Specific embodiment
For the content for further appreciating that the utility model, the utility model is made below in conjunction with the drawings and specific embodiments
The utility model is made improved muffler below and is referred to as Novel muffler by detailed description for the ease of narration.
In order to improve the defect that built-in muffler installation is complicated and erasure effect is undesirable, the utility model proposes one kind
Compound vehicle air-conditioning duct muffler, such as Fig. 1-3 comprising muffler shell 1 is fixed with pipe on the muffler shell 1
Road 2, and the pipeline 2 runs through the muffler shell 1, described disappear is protruded into the axis coincidence of the pipeline 2 and muffler shell 1
Multiple holes 20 are offered on 2 side wall of pipeline of sound device shell 1, connecting portion one end of the muffler shell 1 and pipeline 2 is equipped with
Through-hole 10, the other end are equipped with flange flange 11.In order to compare built-in muffler and muffler provided by the utility model（It is i.e. novel
Muffler）Erasure effect, inventor tests, and referring to Fig. 4-5, chart abscissa is frequency（Hz）, ordinate is decibel
（dB）, since interior noise is mainly low frequency noise, frequency range is between 200Hz-600Hz, especially 250Hz-600Hz
Between, therefore mainly consider the erasure effect in the frequency range of 250Hz-600Hz, from the point of view of the result of comparison, it is switched in air-conditioning
In the state of（Referring to Fig. 5）, the erasure effect of Novel muffler is substantially better than built-in muffler；In the state of air-conditioning shutdown
（Referring to Fig. 6）, frequency is within the scope of 250Hz-400Hz, and the erasure effect of Novel muffler is better than built-in muffler, in 500Hz-
In the frequency range of 600Hz, the erasure effect of Novel muffler is better than built-in muffler, and built-in muffler is only in frequency
Erasure effect in the small-scale space of 400Hz-500Hz is better than Novel muffler, to sum up, on the whole, novel
The erasure effect of muffler is also an advantage over built-in muffler.Compared with built-in muffler, small in size, the weight of Novel muffler
Gently, structure is simple, and easy for installation on pipeline, easily operated, fluid is propagated in pipeline, flows into stream by the hole on pipeline
Out, severe friction occurs for fluid and hole wall, so that a part of sound of fluid is converted into interior energy consumption, to achieve the effect that noise elimination.
Further, the outer diameter equidimension factor in the aperture of aperture, the spacing in two holes and muffler shell can on pipeline
The erasure effect of Novel muffler can be had an impact, in order to advanced optimize the erasure effect of Novel muffler, inventor
Experimental study is done to the different sizes of Novel muffler respectively, by the study found that two pitchs of holes exist when aperture is in 5-7mm
The outer diameter of 10-15mm, muffler shell are in the range of 35-45mm, and erasure effect is relatively good.
Inventor is respectively to the new of model 5*10*35,5*10*45,5*15*45,7*10*35,7*15*35,7*15*45
Type muffler has done comparative experiments, to find out the best preferred embodiment of erasure effect within the scope of above-mentioned model.Due to car
Noise be mainly low frequency noise, frequency range is between 200Hz-600Hz, between especially 250Hz-600Hz, therefore following right
The analysis of different model erasure effect only considers the frequency range of 250Hz-600Hz in each chart.
In order to more intuitively be observed, applicant is split the data of same chart, is divided into four charts
It has been shown that, can refer to Fig. 7-10, such as Fig. 7, it is shown that model is respectively the noise reduction effect of 5*10*35,5*10*45 and 7*10*35
The comparison diagram of fruit, rough analysis, the erasure effect of model 5*10*35 are better than the erasure effect of model 5*10*45, model 5*
The erasure effect of 10*45 is better than the erasure effect of model 7*10*35 again.
Such as Fig. 8, it is shown that model is respectively the comparison diagram of the erasure effect of 5*10*45,7*15*35 and 7*15*45,
Rough analysis, the erasure effect of model 7*15*45 are slightly better than the erasure effect of 5*10*45, the erasure effect of model 5*10*45
It is better than the erasure effect of 7*15*35 again.
In conjunction with Fig. 7-8, it can be deduced that preliminary conclusion, erasure effect between each model using ">" or "=" expression, i.e.,
5*10*35>7*15*45>5*10*45>7*10*35。
Referring to Fig. 9, it is shown that model is respectively the comparison diagram of the erasure effect of 5*10*45,5*15*45, rough point
Analysis, the erasure effect of model 5*10*45 are essentially identical to the muffler of model 5*15*45.
Referring to Fig.1 0, it is shown that model is respectively the comparison diagram of the erasure effect of 7*10*35,7*15*35, rough point
Analysis, the erasure effect of model 7*10*35 are essentially identical to the muffler of model 7*15*35.
Complex chart 7-10 does a comparison to the erasure effect of each model muffler, as a result as follows：5*10*35>7*15*45>
5*10*45>7*10*35, wherein model 5*10*45=5*15*45,7*10*35=7*15*35.
So selecting aperture for 5mm, pitch of holes 10mm, the outer diameter of muffler is the noise reduction effect of the Novel muffler of 35mm
Fruit is best.
Under the premise of comprising above content, in order to further enhance the erasure effect of Novel muffler, in muffler shell
The outer ring of body is coated with sound-proof material, referring to Fig. 4, the sound-proof material successively include adhesive layer 3, layer of polyester fiber 4, expanded polyester every
Sound-absorbing layer 5 and nonwoven layer 6 are equipped with multiple sound-absorption holes 40 in the layer of polyester fiber 4, are filled with glass fibers in the sound-absorption hole 40
Dimension, the adhesive layer 3 are pasted onto 1 outer ring of muffler shell, and polyester fiber and glass fibre belong to sound-absorbing material, cooperation foaming
Polyester puigging 5 has good assimilation effect to noise.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing
Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field
Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design
Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (6)
1. a kind of compound vehicle air-conditioning duct muffler, including muffler shell（1）, it is characterised in that：The muffler shell
Body（1）On be fixed with pipeline（2）, protrude into the muffler shell（1）Pipeline side wall on offer multiple holes（20）；
Multiple hole（20）Aperture be 5-7mm, the spacing between two holes is 10-15mm, the muffler shell（1）Outer diameter
For 35-45mm；The muffler shell（1）Outer ring be coated with sound-proof material, the sound-proof material successively includes adhesive layer（3）, it is poly-
Ester fiber layer（4）, expanded polyester puigging（5）And nonwoven layer（6）, the layer of polyester fiber（4）In be equipped with multiple sound-absorbings
Hole（40）.
2. a kind of compound vehicle air-conditioning duct muffler according to claim 1, it is characterised in that：The pipeline（2）
Through the muffler shell（1）.
3. a kind of compound vehicle air-conditioning duct muffler according to claim 2, it is characterised in that：The muffler shell
Body（1）With pipeline（2）Connecting portion one end be equipped with through-hole（10）, the other end is equipped with flange flange（11）.
4. a kind of compound vehicle air-conditioning duct muffler according to claim 1-3, it is characterised in that：It is described
Muffler shell（1）With pipeline（2）Axis be overlapped.
5. a kind of compound vehicle air-conditioning duct muffler according to claim 1-3, it is characterised in that：It is described
Aperture is 5mm, and two pitchs of holes are 10mm, the muffler shell（1）Outer diameter be 35mm.
6. a kind of compound vehicle air-conditioning duct muffler according to claim 1, it is characterised in that：The sound-absorption hole
（40）In be filled with glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820535472.0U CN208149004U (en) | 2018-04-16 | 2018-04-16 | A kind of compound vehicle air-conditioning duct muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820535472.0U CN208149004U (en) | 2018-04-16 | 2018-04-16 | A kind of compound vehicle air-conditioning duct muffler |
Publications (1)
| Publication Number | Publication Date |
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| CN208149004U true CN208149004U (en) | 2018-11-27 |
Family
ID=64379250
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820535472.0U Active CN208149004U (en) | 2018-04-16 | 2018-04-16 | A kind of compound vehicle air-conditioning duct muffler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678117A (en) * | 2019-01-17 | 2019-04-26 | 佛山市美客医疗科技有限公司 | A kind of mute oxygenerator |
-
2018
- 2018-04-16 CN CN201820535472.0U patent/CN208149004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109678117A (en) * | 2019-01-17 | 2019-04-26 | 佛山市美客医疗科技有限公司 | A kind of mute oxygenerator |
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