CN202986750U - Noise-reduction air inlet device for automobile air-conditioner - Google Patents
Noise-reduction air inlet device for automobile air-conditioner Download PDFInfo
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- CN202986750U CN202986750U CN 201220641398 CN201220641398U CN202986750U CN 202986750 U CN202986750 U CN 202986750U CN 201220641398 CN201220641398 CN 201220641398 CN 201220641398 U CN201220641398 U CN 201220641398U CN 202986750 U CN202986750 U CN 202986750U
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- noise
- perforated plate
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- air inlet
- automobile
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Abstract
The utility model relates to a noise-reduction air inlet device for an automobile air-conditioner. The noise-reduction air inlet device comprises a case. An externally-arranged perforated plate is arranged on one side of the case. An internally-arranged perforated plate is arranged inside the case. A plurality of swinging vanes are evenly distributed between one side of the internally-arranged perforated plate and the externally-arranged perforated plate. A sound absorbing layer is arranged on the other side of the internally-arranged perforated plate and made of sound absorbing materials. One end of the top face and one corresponding end of the bottom face of the case are respectively provided with an installation clamping groove. The noise-reduction air inlet device has the advantages that an expanding noise eliminating structure is adopted for eliminating low-frequency noise and the sound absorbing materials are adopted for absorbing the high-frequency noise, external noise of an engine and the like is effectively separated, attenuated and prevented from being transmitted into the interior of an automobile from an air-conditioner external circulation air ventilation port, noise generated by air flow in an air inlet is lowered, and noise vibration and harshness (NVH) performance of the automobile is further improved. Due to the swinging vane structure, the air flow in the air inlet is guided, and the aerodynamic noise is lowered.
Description
Technical field
The utility model relates to the a/c system of manned vehicle, relates in particular to a kind of noise reduction air-intake device of auto air-con.
Background technology
Along with automobile research and development technology and people's living standard improve constantly, people require also more and more higher to the travelling comfort of automobile, noise is the key factor that affects traveling comfort, wherein motor noise is one of main noise source of car noise, and the vehicle air conditioning external circulation air inlet generally all is arranged near engine nacelle, and air-admitting surface is large and communicate with operator's compartment Inner.Above-mentioned prior art exists the existing technology of following shortcoming mainly to have following defective: 1, existing air-conditioning external circulation air inlet general direct with front wall panel beating opening as the a/c system external circulation air inlet, driving engine and community noise can import in car thus on the one hand, affect vehicle NVH level.2, on the other hand, due to a/c system external circulation air inlet place, air current flow is disorderly, easily produces gas shock, frictional noise.
The utility model content
The purpose of this utility model is to provide a kind of noise reduction air-intake device of auto air-con, adopt the expansion noise elimination structure to eliminate low-frequency noise and sound absorption materials absorbing high-frequency noise, effectively intercept the community noises such as driving engine and propagated in car, improved car load NVH level; Adopt swinging impeller structure to realize the ventilation inlet air-flow is carried out water conservancy diversion, reduced aerodynamics noise, and overcome present prior art above shortcomings.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of noise reduction air-intake device of auto air-con comprises housing, and a side of described housing is provided with external perforated plate, and enclosure interior is provided with built-in perforated plate, is evenly distributed with some pendulum leaves between a side of built-in perforated plate and external perforated plate.
Further, the opposite side of described built-in perforated plate is provided with sound absorbing layer, and sound absorbing layer is made by sound absorption materials.
Further, the corresponding end in an end of described housing end face and bottom surface is equipped with the installation draw-in groove.
Preferably, the percentage of perforation of described external perforated plate is 30%.
Preferably, the percentage of perforation of described built-in perforated plate is 25%.
The beneficial effects of the utility model are:
1, the utility model adopts the expansion noise elimination structure to eliminate low-frequency noise and sound absorption materials absorbing high-frequency noise, and the community noises such as the driving engine that effectively intercepts, decays are propagated the noise that can reduce again due to ventilation inlet place's Air Flow generation by air-conditioning outer circulation vent window in car.
2, the utility model is applicable to the various vehicles such as car, cross-country car, commercial vehicle/comm..vehicle, and range of use is wider, can further promote car load NVH performance.
3, the utility model adopts swinging impeller structure to realize the ventilation inlet air-flow is carried out water conservancy diversion, has reduced aerodynamics noise.
4, be convenient to Project Realization, can clamping direct with it under the condition that does not change existing vehicle air conditioning external circulation air inlet place structure.
5, this device have simple in structure, be not subjected to space constraint, be easy to the through engineering approaches batch manufacturing, the advantage such as cheap.
Description of drawings
The below is described in further detail the utility model with reference to the accompanying drawings.
Fig. 1 is the structural representation of the noise reduction air-intake device of the described auto air-con of the utility model embodiment;
Fig. 2 is the right elevation of the noise reduction air-intake device of the described auto air-con of the utility model embodiment;
Fig. 3 is the A-A sectional view of Fig. 1.
In figure:
1, external perforated plate; 2, pendulum leaf; 3, built-in perforated plate; 4, sound absorbing layer; 5, housing; 6, draw-in groove is installed.
The specific embodiment
As Figure 1-3, the noise reduction air-intake device of the described a kind of auto air-con of the utility model embodiment, comprise housing 5, one side of described housing 5 is provided with external perforated plate 1, the percentage of perforation of external perforated plate 1 is 30%, housing 5 inside are provided with built-in perforated plate 3, and the percentage of perforation of built-in perforated plate 3 is 25%, are evenly distributed with some pendulum leaves 2 between a side of built-in perforated plate 3 and external perforated plate 1.The opposite side of described built-in perforated plate 3 is provided with sound absorbing layer 4, and sound absorbing layer 4 is made by sound absorption materials.The corresponding end in one end of described housing 5 end faces and bottom surface is equipped with installs draw-in groove 6.
When the noise reduction air-intake device of the described auto air-con of the utility model embodiment was worked, external perforated plate 1 can intercept partial noise, and formed the expansion noise elimination structures with housing 5 internal cavities and built-in perforated plate 3, can eliminate the part low-frequency noise; Because built-in perforated plate 3 density of such perforation are smaller, can better again intercept the noise that enters cavity, pendulum leaf 2 has the impedance transition mechanism noise elimination structure and has the gas flow of change alleviates gas shock, sound absorbing layer 4 has sound absorption and the effect of filtered air impurity concurrently, effectively having intercepted the community noises such as driving engine propagates in car, improve car load NVH level, and be convenient to Project Realization, can be by draw-in groove 6 clamping direct with it be installed under the condition that does not change existing vehicle air conditioning external circulation air inlet place structure.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation on its shape or structure; every have identical with a application or akin technical scheme, within all dropping on protection domain of the present utility model.
Claims (5)
1. the noise reduction air-intake device of an auto air-con, comprise housing (5), it is characterized in that: a side of described housing (5) is provided with external perforated plate (1), housing (5) inside is provided with built-in perforated plate (3), is evenly distributed with some pendulum leaves (2) between a side of built-in perforated plate (3) and external perforated plate (1).
2. the noise reduction air-intake device of auto air-con according to claim 1, it is characterized in that: the opposite side of described built-in perforated plate (3) is provided with sound absorbing layer (4).
3. the noise reduction air-intake device of auto air-con according to claim 1 and 2 is characterized in that: the corresponding end of an end of described housing (5) end face and housing (5) bottom surface is equipped with installs draw-in groove (6).
4. the noise reduction air-intake device of auto air-con according to claim 3, it is characterized in that: the percentage of perforation of described external perforated plate (1) is 30%.
5. the noise reduction air-intake device of auto air-con according to claim 4, it is characterized in that: the percentage of perforation of described built-in perforated plate (3) is 25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641398 CN202986750U (en) | 2012-11-28 | 2012-11-28 | Noise-reduction air inlet device for automobile air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641398 CN202986750U (en) | 2012-11-28 | 2012-11-28 | Noise-reduction air inlet device for automobile air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202986750U true CN202986750U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220641398 Expired - Fee Related CN202986750U (en) | 2012-11-28 | 2012-11-28 | Noise-reduction air inlet device for automobile air-conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN202986750U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358856A (en) * | 2013-07-10 | 2013-10-23 | 奇瑞汽车股份有限公司 | Sound-absorption dust shield for passenger vehicle scavenge port |
| CN106057187A (en) * | 2016-06-29 | 2016-10-26 | 广州恒成智道信息科技有限公司 | Resistive and reactive combined assembly type muffler |
| CN107405978A (en) * | 2015-03-18 | 2017-11-28 | 三菱电机株式会社 | Vehicle air conditioner |
| CN108081908A (en) * | 2017-12-19 | 2018-05-29 | 东风汽车集团有限公司 | A kind of air-conditioning assembly resonant cavity denoising structure |
| CN110099810A (en) * | 2016-09-30 | 2019-08-06 | 尤姆弗泰克有限公司 | Ventilation device for making interior of motor vehicles divulge information |
-
2012
- 2012-11-28 CN CN 201220641398 patent/CN202986750U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358856A (en) * | 2013-07-10 | 2013-10-23 | 奇瑞汽车股份有限公司 | Sound-absorption dust shield for passenger vehicle scavenge port |
| CN107405978A (en) * | 2015-03-18 | 2017-11-28 | 三菱电机株式会社 | Vehicle air conditioner |
| CN107405978B (en) * | 2015-03-18 | 2019-11-26 | 三菱电机株式会社 | Vehicle air conditioner |
| CN106057187A (en) * | 2016-06-29 | 2016-10-26 | 广州恒成智道信息科技有限公司 | Resistive and reactive combined assembly type muffler |
| CN110099810A (en) * | 2016-09-30 | 2019-08-06 | 尤姆弗泰克有限公司 | Ventilation device for making interior of motor vehicles divulge information |
| CN108081908A (en) * | 2017-12-19 | 2018-05-29 | 东风汽车集团有限公司 | A kind of air-conditioning assembly resonant cavity denoising structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20201128 |