CN202254168U - Silencing blind - Google Patents
Silencing blind Download PDFInfo
- Publication number
- CN202254168U CN202254168U CN201120348768XU CN201120348768U CN202254168U CN 202254168 U CN202254168 U CN 202254168U CN 201120348768X U CN201120348768X U CN 201120348768XU CN 201120348768 U CN201120348768 U CN 201120348768U CN 202254168 U CN202254168 U CN 202254168U
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- China
- Prior art keywords
- noise
- page
- noise elimination
- leaf sheet
- eliminating
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- 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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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model relates to a silencing blind. Silencing blades in the silencing blind are divided into two kinds of silencing blades: inner silencing blades and outer silencing blades, and right-angle staggered discontinuous arrangement is formed between the inner silencing blades and the outer silencing blades. High silencing capacity is realized, the high-frequency failure can be avoided, the low-frequency silencing effect can be improved, and the air pressure loss of an air flow passage is small.
Description
Affiliated technical field
The utility model relates to a kind of noise elimination louver, and especially higher sound deadening capacity can be stopped high frequency and lose efficacy, and improves the noise elimination effect of low frequency, the noise elimination louver that the air loss of gas channel is little.
Background technology
The noise elimination louver be applicable to ventilation, air-conditioning system do not have return air duct machine room return air inlet or pipe end send the air port back to, not enough with the sound deadening capacity that remedies system.Also can be used for the adjacent sound insulation effect that plays when perforate, air-conditioning requirement being arranged with the room.And other sound source devices (machine room) such as refrigeration machine, cooling tower, Diesel engine group etc., the requirement of satisfy its ventilation and heat, daylighting, going along with sb. to guard him simultaneously, the control noise is to external radiation.At present; Noise elimination louver structure is to be spaced noise elimination by the resistance noise reduction sheet with inclination; And the spacing of eliminating the noise between the page or leaf sheet can make the high frequency sound wave of part straightline propagation vertically in the interval of eliminating the noise between the page or leaf sheet, form " acoustic beam "; Lessly contact with the noise elimination page or leaf sheet sound absorption structure of conduit wall, sound deadening capacity reduces greatly, and this phenomenon is referred to as to call high frequency and lost efficacy.This structure is relatively poor to the noise elimination effect of low frequency, increases sound deadening capacity like the spacing by the louver page or leaf sheet that reduces to eliminate the noise, and can reduce the available ventilation area, increases the pressure loss through the page or leaf sheet air-flow of eliminating the noise.
Summary of the invention
Little in order to overcome existing noise elimination louver sound deadening capacity; Possibly produce high frequency lost efficacy; The relatively poor deficiency of noise elimination effect of low frequency, the utility model provides a kind of noise elimination louver, the sound deadening capacity that this noise elimination louver is not only higher; Can stop high frequency and lose efficacy, the noise elimination effect of low frequency has the noise elimination louver of efficient full-frequency sound absorption structure preferably.
The utility model solves the technical scheme that its technical problem adopted: a kind of noise elimination louver; Be staggered by the page or leaf sheet of eliminating the noise and process; Noise elimination page or leaf sheet in the noise elimination louver is divided into inside and outside two kinds of page or leaf sheets of eliminating the noise, forms the right angle stagger arrangement each other and be interrupted arrangement, can eliminate the straight-through spacing of eliminating the noise and existing between the page or leaf sheet; The passage of straightline propagation sound wave vertically of intercept eliminating the noise in the page or leaf sheet, the high frequency that can stop traditional noise elimination louver lost efficacy.
The inside and outside spacing between the page or leaf sheet of eliminating the noise be between the parallel noise elimination page or leaf sheet spacing 1/2; Reduce the pressure loss through the page or leaf sheet air-flow of eliminating the noise, the increase noise contacts with the page or leaf sheet sound absorption structure of eliminating the noise, and the incoherence of the page or leaf sheet of eliminating the noise can form new sound field media; The continuous turnover sound field media of sound wave; Sound wave can produce refraction once more, helps increasing the attenuation of the middle and high frequency range of noise, and the noise elimination property of noise elimination louver is further improved.
The sound-absorbing material of eliminating the noise in the page or leaf sheet uses rainproof sound absorption cloth parcel, and what eliminate the noise the page or leaf sheet except the armour layer is that metallic plate is perforated metal outward by outdoor section, can prevent the invasion and attack of rainwater, the noise elimination effect of assurance noise elimination louver.Special-shaped sound absorption structure is used in the upper and lower part of noise elimination louver.
The beneficial effect of the utility model is, not only has higher sound deadening capacity, can stop high frequency and lose efficacy, and improves the noise elimination effect of low frequency, and the air loss of gas channel is little.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 be the utility model front view.
Fig. 2 is the side sectional structural map of the utility model embodiment;
Fig. 3 is the partial side sectional structural map of the utility model embodiment;
1. noise elimination louvers among the figure, the 2. outer page or leaf sheet of eliminating the noise, the page or leaf sheet of eliminating the noise in 3., 4. gas channel, 5. perforated metal, 6. metallic plate, 7. sound-absorbing material, 8. rainproof sound absorption cloth, 9. load-bearing frame structure, 10. special-shaped sound absorption structure.
The specific embodiment
In Fig. 1, noise elimination louver (1) comprises load-bearing frame structure (9), and the outer page or leaf sheet (2) of eliminating the noise is installed in load-bearing frame structure (9) outside, and special-shaped sound absorption structure (10) is used in the upper and lower part.
Fig. 2, embodiment illustrated in fig. 3 in; Fill out sound-absorbing material (7) in the interior page or leaf sheet (3) of eliminating the noise, the outer page sheet (2) of eliminating the noise; Wrapping up rainproof sound absorption cloth (8) outer is perforated metal (5) armour layer, interior noise elimination page or leaf sheet (3), outer page or leaf sheet (2) right angle each other of eliminating the noise, and stagger arrangement is interrupted arrangement; The standard of gas channel (4) is arranged; For preventing the invasion and attack of rainwater, the outer outer part of protection slab of eliminating the noise page or leaf sheet (2) is metallic plate (a 6) armour layer, and interior noise elimination page or leaf sheet (3), the outer page or leaf sheet (2) of eliminating the noise are installed in the load-bearing frame structure (9).
Claims (4)
1. noise elimination louver is staggered by the page or leaf sheet of eliminating the noise and processes, and it is characterized in that: the noise elimination page or leaf sheet of noise elimination louver is divided into inside and outside two kinds of page or leaf sheets of eliminating the noise, forms the right angle stagger arrangement each other and be interrupted arrangement.
2. noise elimination louver according to claim 1 is characterized in that: the inside and outside spacing between the page or leaf sheet of eliminating the noise be between the parallel noise elimination page or leaf sheet spacing 1/2.
3. based on the described noise elimination louver of claim 1, it is characterized in that: the sound-absorbing material in the page or leaf sheet of eliminating the noise uses rainproof sound absorption cloth parcel, and what eliminate the noise the page or leaf sheet except the armour layer is that metallic plate is perforated metal outward by outdoor section.
4. noise elimination louver according to claim 1 is characterized in that: special-shaped sound absorption structure is used in the upper and lower part of noise elimination louver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120348768XU CN202254168U (en) | 2011-09-19 | 2011-09-19 | Silencing blind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120348768XU CN202254168U (en) | 2011-09-19 | 2011-09-19 | Silencing blind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254168U true CN202254168U (en) | 2012-05-30 |
Family
ID=46115401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120348768XU Expired - Fee Related CN202254168U (en) | 2011-09-19 | 2011-09-19 | Silencing blind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202254168U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671280A (en) * | 2013-08-15 | 2014-03-26 | 厦门嘉达声学技术有限公司 | Composite chimney silencer |
| CN103743259A (en) * | 2013-12-17 | 2014-04-23 | 抚顺博宇噪声控制技术开发有限公司 | Tilting plate-honeycomb-type silencer |
| CN103884086A (en) * | 2014-03-05 | 2014-06-25 | 广东美的制冷设备有限公司 | Wind-sound-preventive device and air conditioner indoor unit |
| US10635878B2 (en) | 2015-10-23 | 2020-04-28 | Shenzhen GOODIX Technology Co., Ltd. | Optical fingerprint sensor with force sensing capability |
-
2011
- 2011-09-19 CN CN201120348768XU patent/CN202254168U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671280A (en) * | 2013-08-15 | 2014-03-26 | 厦门嘉达声学技术有限公司 | Composite chimney silencer |
| CN103671280B (en) * | 2013-08-15 | 2016-06-08 | 厦门嘉达声学技术有限公司 | Composite chimney silencer |
| CN103743259A (en) * | 2013-12-17 | 2014-04-23 | 抚顺博宇噪声控制技术开发有限公司 | Tilting plate-honeycomb-type silencer |
| CN103884086A (en) * | 2014-03-05 | 2014-06-25 | 广东美的制冷设备有限公司 | Wind-sound-preventive device and air conditioner indoor unit |
| US10635878B2 (en) | 2015-10-23 | 2020-04-28 | Shenzhen GOODIX Technology Co., Ltd. | Optical fingerprint sensor with force sensing capability |
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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 |
Granted publication date: 20120530 Termination date: 20150919 |
|
| EXPY | Termination of patent right or utility model |