CN103743082B - A kind of vehicle air conditioning outlet denoising structure - Google Patents
A kind of vehicle air conditioning outlet denoising structure Download PDFInfo
- Publication number
- CN103743082B CN103743082B CN201310619579.5A CN201310619579A CN103743082B CN 103743082 B CN103743082 B CN 103743082B CN 201310619579 A CN201310619579 A CN 201310619579A CN 103743082 B CN103743082 B CN 103743082B
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- perforated plate
- fixing pipe
- pipelines
- cellular
- air conditioner
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Abstract
A kind of vehicle air conditioning outlet denoising structure, described structure is in being arranged on pipelines of automobile air conditioner at close air outlet, and this structure includes fixing pipe, sliding tube and cellular perforated plate, and described fixing pipe one end is provided with closed-loop, closed-loop is fixed with pipelines of automobile air conditioner inwall, fixing pipe outer sheath shock mount；Described sliding canister is contained in outside fixing pipe, sliding tube one end fixed cellular shape perforated plate, cellular perforated plate is annular plate, is air inlet in the middle part of it, the uniform honeycomb hole of annular section of cellular perforated plate, the periphery of cellular perforated plate is slidably matched with pipelines of automobile air conditioner inwall；The annular housing of variable-volume is constituted between cellular perforated plate, closed-loop, sliding tube, fixing pipe and pipelines of automobile air conditioner.Frequency of noise elimination of the present invention is automatically adjusted along with the change of wind speed, therefore reduction pipelines of automobile air conditioner and air outlet wideband radiated noise is had obvious effect.
Description
Technical field
The present invention relates to a kind of air conditioning for automobiles parts, particularly vehicle air conditioning outlet denoising structure.
Background technology
Along with the requirement of reduction Vehicle Interior Noise, raising riding comfort is improved by consumer day by day, reduce automobile and make an uproar
Sound becomes and improves the subject matter that car steering comfortableness needs to solve.The noise level of driver's cabin is to evaluate automobile ride comfort
The important indicator of property, wherein the noise of air conditioning system is the important component part of internal car noise.During air conditioning for automobiles work, often
Because the noise that compressor of air conditioner, aerator, pipeline eddy current or other noise sources produce is delivered in car along air-conditioner air outlet,
And the noise of air-conditioning duct can increase along with the raising of wind speed, particularly high frequency noise content is prominent substantially, passes through air-conditioning
Air outlet is radiated the noise of driver's cabin and can increase, and causes discomfort to passenger, and noise frequency is often along with the increasing of wind speed
Raising greatly, change frequency band is wider, brings certain difficulty to noise elimination noise reduction work.At present, the fall that automotive air-conditioning system uses
Means of making an uproar are transmitted to reduce noise generally by reducing the noise source such as compressor or aerator in car, but this conventional hands
The noise that section is difficult to suppress air-conditioning duct or miscellaneous part to produce is delivered in driver's cabin by air-conditioner air outlet, and still lacks
Effective technological means reduces air-conditioning duct and the broadband noise given off of air outlet.
Summary of the invention
Present invention aims to the drawback of prior art, it is provided that a kind of frequency of noise elimination can along with the change of wind speed certainly
Dynamic regulation, thus reduce pipelines of automobile air conditioner and the vehicle air conditioning outlet denoising structure of air outlet wideband radiated noise.
Problem of the present invention realizes with following technical proposals:
A kind of vehicle air conditioning outlet denoising structure, its special feature is, described structure is arranged in pipelines of automobile air conditioner
At air outlet, this structure includes fixing pipe, sliding tube and cellular perforated plate, and described fixing pipe one end is provided with closed-loop,
Closed-loop is fixed with pipelines of automobile air conditioner inwall, fixing pipe outer sheath shock mount；Described sliding canister is contained in outside fixing pipe, sliding
Dynamic pipe one end fixed cellular shape perforated plate, cellular perforated plate is annular plate, is air inlet in the middle part of it, the ring of cellular perforated plate
The uniform honeycomb hole in shape region, the periphery of cellular perforated plate is slidably matched with pipelines of automobile air conditioner inwall；Cellular perforated plate, envelope
The annular housing of variable-volume is constituted between closed loop, sliding tube, fixing pipe and pipelines of automobile air conditioner.
Above-mentioned vehicle air conditioning outlet denoising structure, one end of described fixing pipe is provided with evagination limiting stand, described sliding tube
One end be provided with convex limiting stand, evagination limiting stand and convex limiting stand and mutually fasten and form spacing to sliding tube.
Above-mentioned vehicle air conditioning outlet denoising structure, the thickness of slab of described cellular perforated plate is 2-5mm, the aperture of honeycomb hole
For 2-3mm, honeycomb hole punching rate on cellular perforated plate is less than or equal to 5%.
Above-mentioned vehicle air conditioning outlet denoising structure, the area of described pipelines of automobile air conditioner is S1, and the area of air inlet is
S2, S2=(0.5-0.6) S1.
Above-mentioned vehicle air conditioning outlet denoising structure, described closed-loop is 20-with spacing B of pipelines of automobile air conditioner air outlet
50 millimeters.
Above-mentioned vehicle air conditioning outlet denoising structure, described fixing pipe is additionally provided with slip ring, and slip ring is positioned at sliding tube and bullet
Between spring.
The present invention is directed to solve to reduce air conditioning for automobiles noise problem, at pipelines of automobile air conditioner air outlet, be provided with a kind of fall
Making an uproar structure, described structure is formed with the cavity that wind speed change by cellular perforated plate and connected, volume to be had necessarily
The resonator cavity of frequency.Resonator cavity natural frequency f=, wherein V is cavity volume, owing to cellular perforated plate can be according to wind
Speed size automatically moves, and changes cavity volume V, thus has reached the regulation of resonator cavity frequency f.When air-conditioning duct wind speed increases
Time can cause high frequency noise content highlight, and now V-value can because of wind speed become reduce greatly, the reduction of volume V will cause resonator cavity consolidate
There is frequency f to become big, thus effectively suppress to produce high frequency noise content because wind speed increases, become with wind speed in final reduction driver's cabin
The noise of the HFS changed and produce.Frequency of noise elimination of the present invention is automatically adjusted along with the change of wind speed, therefore to reducing automobile
Air-conditioning duct and air outlet wideband radiated noise have obvious effect.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is sliding tube and the structural representation of cellular perforated plate；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is fixing pipe and the structural representation of closed-loop；
Fig. 5 is the right view of Fig. 4.
In figure, each list of reference numerals is: 1, pipelines of automobile air conditioner, 2, cellular perforated plate, and 2-1, honeycomb hole, 2-2, air inlet,
3, sliding tube, 3-1, convex limiting stand, 4, slip ring, 5, spring, 6, fixing pipe, 6-1, evagination limiting stand, 7, closed-loop, 8, ring-type
Cavity.
Detailed description of the invention
Referring to Fig. 1, structure of the present invention is in being arranged on pipelines of automobile air conditioner 1 at close air outlet, and this structure includes solid
Fixed tube 6, sliding tube 3 and cellular perforated plate 2.Wherein fixing the outlet air end fixed closed ring 7 of pipe 6, closed-loop is ring-type, closes
The internal diameter of ring mates with the internal diameter of fixing pipe, and the periphery of closed-loop is closed admittedly with pipelines of automobile air conditioner inwall, and closed-loop is empty with automobile
Spacing B adjusting pipeline air outlet is 20-50 millimeter.Described sliding tube 3 is sleeved on outside fixing pipe, and sliding tube can be relatively fixed
Pipe moves, sliding tube air intake fixed cellular shape perforated plate 2, and cellular perforated plate is annular plate, is air inlet 2-2 in the middle part of it,
The annular section uniform honeycomb hole 2-1 of cellular perforated plate, slides with pipelines of automobile air conditioner inwall in the periphery of cellular perforated plate
Coordinate.The outer sheath shock mount 5 of fixing pipe, is provided with slip ring 4 between the right-hand member and spring 5 of sliding tube 3.Cellular perforated plate,
The ring-shaped cavity 8 of variable-volume is constituted between closed-loop, sliding tube, fixing pipe and pipelines of automobile air conditioner.
Referring to Fig. 2, Fig. 3, cellular perforated plate 2 is connected by screw with sliding tube, and the right-hand member at sliding tube 3 is provided with convex limit
Position platform 3-1；Referring to Fig. 4, Fig. 5, the left end of fixing pipe 6 is provided with evagination limiting stand 6-1；Evagination limiting stand and convex limiting stand are mutual
Fasten to be formed and sliding tube is moved to left the spacing of (when pulling open).From Figure 2 it can be seen that the internal diameter of air inlet 2-2 is less than the internal diameter of sliding tube,
This structure can be formed and sliding tube moves to right the spacing of (during recovery).
Referring to Fig. 1, Fig. 3, the thickness of slab of cellular perforated plate 2 is 2-5mm, and the aperture of honeycomb hole 2-1 is 2-3mm, honeycomb hole
Punching rate on cellular perforated plate is less than or equal to the gross area S3 in hole on 5%(i.e. honeycomb perforated plate, cellular perforated plate
The gross area is S4, S3/S4≤5%).The area of pipelines of automobile air conditioner 1 is S1, and the area of air inlet 2-2 is S2, S2=(0.5-
0.6) S1.Above-mentioned size both can guarantee that the effect playing honeycomb hole, does not interferes with again the circulation of air-conditioner wind.
Referring still to Fig. 1, when the present invention works the frequency of noise elimination of ring-shaped cavity 8 by cellular perforated plate, ring-shaped cavity volume,
The parameter determinations such as the perforated sections of cellular perforated plate is long-pending.Owing to cellular perforated plate 2 can be with the size of air conditioner wind speed along sky
Tune pipeline moves forward and backward, so ring-shaped cavity volume is variable.When air-conditioning duct wind speed is 0, cellular perforated plate 2 is positioned at
Initial position shown in Fig. 1, now the volume of ring-shaped cavity is maximum, along with the increase of wind speed, cellular perforated plate front area
The pressure increased can make cellular perforated plate move right along air-conditioning duct compression spring, and is finally reached a balance position
Put.The change of ring-shaped cavity 8 volume, frequency of noise elimination as well as change and realize be automatically adjusted.
Resonator cavity formula for natural frequency f=, wherein, f is resonator cavity natural frequency, and S is that cellular perforated plate cuts
Area, V is cavity volume, and L is cellular perforated plate thickness.In above-mentioned parameter of the present invention, ring-type cavity volume V is variable, honeycomb
Shape perforated plate can move change cavity volume V according to wind speed size, thus reaches the regulation of resonator cavity frequency f.Work as air velocity duct
When increase causes high frequency noise content to highlight, ring-shaped cavity volume V-value can reduce because wind speed becomes big, and volume V diminishes and makes resonance
Chamber natural frequency f becomes big, thus effectively suppresses to produce high frequency noise content because wind speed increases, and final reduction is with wind speed change
The driver's cabin noise of the HFS produced.
Claims (6)
1. a vehicle air conditioning outlet denoising structure, in being arranged on pipelines of automobile air conditioner (1) at close air outlet, its feature exists
In, described structure includes fixing pipe (6), sliding tube (3) and cellular perforated plate (2), and described fixing pipe one end is provided with closed-loop
(7), closed-loop is fixed with pipelines of automobile air conditioner inwall, fixing pipe outer sheath shock mount (5)；Described sliding canister is contained in fixing pipe
Outside, sliding tube one end fixed cellular shape perforated plate, cellular perforated plate is annular plate, is air inlet (2-2) in the middle part of it, honeycomb
The uniform honeycomb hole of the annular section (2-1) of shape perforated plate, slides with pipelines of automobile air conditioner inwall and joins in the periphery of cellular perforated plate
Close；The annular housing of variable-volume is constituted between cellular perforated plate, closed-loop, sliding tube, fixing pipe and pipelines of automobile air conditioner
(8).
Vehicle air conditioning outlet denoising structure the most according to claim 1, it is characterised in that the one of described fixing pipe (6)
End is provided with evagination limiting stand (6-1), and one end of described sliding tube (3) is provided with convex limiting stand (3-1), evagination limiting stand and convex
Limiting stand mutually fastens and forms spacing to sliding tube.
Vehicle air conditioning outlet denoising structure the most according to claim 2, it is characterised in that described cellular perforated plate
(2) thickness of slab is 2-5mm, and the aperture of honeycomb hole (2-1) is 2-3mm, and honeycomb hole punching rate on cellular perforated plate is less than
Equal to 5%.
Vehicle air conditioning outlet denoising structure the most according to claim 3, it is characterised in that described pipelines of automobile air conditioner
(1) area is S1, and the area of air inlet (2-2) is S2, S2=(0.5～0.6) S1.
Vehicle air conditioning outlet denoising structure the most according to claim 4, it is characterised in that described closed-loop is empty with automobile
Spacing B adjusting pipeline air outlet is 20～50 millimeters.
Vehicle air conditioning outlet denoising structure the most according to claim 5, it is characterised in that be additionally provided with on described fixing pipe
Slip ring (4), slip ring is positioned between sliding tube (3) and spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619579.5A CN103743082B (en) | 2013-11-29 | 2013-11-29 | A kind of vehicle air conditioning outlet denoising structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619579.5A CN103743082B (en) | 2013-11-29 | 2013-11-29 | A kind of vehicle air conditioning outlet denoising structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103743082A CN103743082A (en) | 2014-04-23 |
| CN103743082B true CN103743082B (en) | 2016-08-17 |
Family
ID=50500130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310619579.5A Expired - Fee Related CN103743082B (en) | 2013-11-29 | 2013-11-29 | A kind of vehicle air conditioning outlet denoising structure |
Country Status (1)
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| CN (1) | CN103743082B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105551477B (en) * | 2015-12-22 | 2019-03-01 | 杭叉集团股份有限公司 | Adjustable noise reduction box |
| US10532631B2 (en) | 2017-03-29 | 2020-01-14 | Ford Global Technologies, Llc | Acoustic air duct and air extraction system including a plurality of channels having an expansion chamber |
| CN110614901A (en) * | 2018-06-19 | 2019-12-27 | 保时捷股份公司 | Air conditioning system for a motor vehicle |
| CN110568015A (en) * | 2019-08-02 | 2019-12-13 | 安徽理工大学 | Gas explosion characteristic parameter testing device |
| CN110397572B (en) * | 2019-08-28 | 2023-02-28 | 珠海格力电器股份有限公司 | Silencer, compressor and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5326317A (en) * | 1991-10-18 | 1994-07-05 | Matsushita Seiko Co., Ltd. | Ventilator |
| CN201359356Y (en) * | 2009-03-02 | 2009-12-09 | 上海加冷松芝汽车空调股份有限公司 | Automobile air conditioning device |
| CN201909416U (en) * | 2010-12-07 | 2011-07-27 | 宁波永成双海汽车部件有限公司 | Toggle device of air outlet of automotive air conditioning |
| CN201914261U (en) * | 2010-12-21 | 2011-08-03 | 石家庄国祥运输设备有限公司 | Air-conditioning ventilation device for high-speed track vehicle |
| CN102853515A (en) * | 2012-09-03 | 2013-01-02 | 北京科奥克声学技术有限公司 | Broadband sound absorption air tube and air opening |
-
2013
- 2013-11-29 CN CN201310619579.5A patent/CN103743082B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5326317A (en) * | 1991-10-18 | 1994-07-05 | Matsushita Seiko Co., Ltd. | Ventilator |
| CN201359356Y (en) * | 2009-03-02 | 2009-12-09 | 上海加冷松芝汽车空调股份有限公司 | Automobile air conditioning device |
| CN201909416U (en) * | 2010-12-07 | 2011-07-27 | 宁波永成双海汽车部件有限公司 | Toggle device of air outlet of automotive air conditioning |
| CN201914261U (en) * | 2010-12-21 | 2011-08-03 | 石家庄国祥运输设备有限公司 | Air-conditioning ventilation device for high-speed track vehicle |
| CN102853515A (en) * | 2012-09-03 | 2013-01-02 | 北京科奥克声学技术有限公司 | Broadband sound absorption air tube and air opening |
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| CN103743082A (en) | 2014-04-23 |
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