CN2893170Y - Throttling depressed small hole injection compound sound silencer - Google Patents
Throttling depressed small hole injection compound sound silencer Download PDFInfo
- Publication number
- CN2893170Y CN2893170Y CN 200620031763 CN200620031763U CN2893170Y CN 2893170 Y CN2893170 Y CN 2893170Y CN 200620031763 CN200620031763 CN 200620031763 CN 200620031763 U CN200620031763 U CN 200620031763U CN 2893170 Y CN2893170 Y CN 2893170Y
- Authority
- CN
- China
- Prior art keywords
- throttling
- cylindrical shell
- sound
- sound absorption
- hole injection
- 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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- Exhaust Silencers (AREA)
Abstract
The decompression eyelet hole jetting composite silencer provided is a silencing device which overcomes the shortcomings of prior silencer, such as complicated structure, large volume, easy damage, and not so ideal noise-reducing effect. The utility model comprises an effective sound absorbent, a sound absorbing cylinder, a throttle pipe, a throttle disc, a connecting support, and a spreader plate that are connected with each other. The device may reach a fairly ideal silencing effect (25 - 35db) once being combined with a eyelet hole jetting.
Description
One, technical field: the utility model relates to a kind of silencer, especially throttling step-down micropore jet composite muffler.
Two, background technique: the exhaust of aerodynamic force equipment (as blower, air compressor) air-flow path often produces the strong jet noise more than 110 decibels.The sound pressure level of this noise is along with equipment pressure, and the raising of air displacement improves with logarithmic relationship.So it is very necessary to control this noise, the ring-current in past, throttling step-down injection are mixed the silencing apparatus that cold type, multistage step-down add various types such as acoustical tile, can obtain the sound deadening capacity of 20-25 decibel, still, its complex structure, bulky, consume that steel are many, the afterbody sound absorption structure is fragile etc.
Three, summary of the invention: the purpose of this utility model provides simple in structure, easy processing, volume is little, intensity is high, throttling step-down micropore jet composite muffler without sound-absorbing material, it has overcome existing acoustic wave filter structure complexity, bulky, fragile, the unfavorable shortcoming of noise reduction, the purpose of this utility model is to realize like this, it is to be formed by connecting by efficient sound absorbent, sound absorption cylindrical shell, throttle pipe, Rectifier plate, connection support, flow distribution plate, connect to support and to be connected with cylindrical shell, flow distribution plate be connected support and connection; Rectifier plate is connected with the sound absorption cylindrical shell, and throttle pipe is connected with Rectifier plate; Connecting support and Rectifier plate can expand the noise air-flow, to carry out micropore jet more uniformly; Efficient sound absorbent is suspended on the sound absorption cylindrical shell, and the gas behind micropore jet can carry out noise processed once more through sound absorbent.
The principle that has the shift frequency effect according to micropore jet, the more little reduction anti noise in spray aperture is good more, the structure of this throttling step-down micropore jet composite muffler changes original single major diameter jet exhaust into large size exactly, the aperture spout, change based on the micropore jet noise spectrum, promptly when the airspeed of passing through aperture is enough high, aperture can be shifted to high frequency with the frequency spectrum of exhaust sound, audible sound in the noise spectrum is partly reduced, utilize the effect of throttling step-down again, reducing preceding the staying of micropore jet presses, consume part acoustic energy in advance, combine with micropore jet and just can obtain more satisfactory noise elimination effect, can obtain the noise elimination effect of 25-35 decibel.
Four, description of drawings: Fig. 1 is the structure principle chart of throttling step-down micropore jet composite muffler, among the figure 1, efficient sound absorbent 2, sound absorption cylindrical shell 3, throttle pipe 4, Rectifier plate 5, connect support 6, flow distribution plate
Five, embodiment: in Fig. 1, connect to support 5 and be connected with sound absorption cylindrical shell 2, flow distribution plate 6 be connected support 5 connections; Rectifier plate 4 is connected with sound absorption cylindrical shell 2, and throttle pipe 3 is connected with Rectifier plate 4; Efficient sound absorbent 1 is suspended on the sound absorption cylindrical shell 2.
Claims (1)
1, throttling step-down micropore jet composite muffler, it is to be formed by connecting by efficient sound absorbent (1), sound absorption cylindrical shell (2), throttle pipe (3), Rectifier plate (4), connection support (5), flow distribution plate (6), it is characterized in that: connect to support (5) and be connected with sound absorption cylindrical shell (2), flow distribution plate (6) be connected support (5) connection; Rectifier plate (4) is connected with sound absorption cylindrical shell (2), and throttle pipe (3) is connected with Rectifier plate (4); Efficient sound absorbent (1) is suspended on the sound absorption cylindrical shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620031763 CN2893170Y (en) | 2006-04-27 | 2006-04-27 | Throttling depressed small hole injection compound sound silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620031763 CN2893170Y (en) | 2006-04-27 | 2006-04-27 | Throttling depressed small hole injection compound sound silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2893170Y true CN2893170Y (en) | 2007-04-25 |
Family
ID=38061335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620031763 Expired - Fee Related CN2893170Y (en) | 2006-04-27 | 2006-04-27 | Throttling depressed small hole injection compound sound silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2893170Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469782A (en) * | 2015-12-19 | 2016-04-06 | 江西泰豪军工集团有限公司 | Powder metallurgy pipe diffusion silencer |
| TWI612269B (en) * | 2017-01-09 | 2018-01-21 | 廣達電腦股份有限公司 | Anti-acoustics streamline apparatus and computing device including the same |
-
2006
- 2006-04-27 CN CN 200620031763 patent/CN2893170Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469782A (en) * | 2015-12-19 | 2016-04-06 | 江西泰豪军工集团有限公司 | Powder metallurgy pipe diffusion silencer |
| TWI612269B (en) * | 2017-01-09 | 2018-01-21 | 廣達電腦股份有限公司 | Anti-acoustics streamline apparatus and computing device including the same |
| CN108287600A (en) * | 2017-01-09 | 2018-07-17 | 广达电脑股份有限公司 | Streamlined anti-device and the arithmetic unit comprising it of making an uproar |
| US10453436B2 (en) | 2017-01-09 | 2019-10-22 | Quanta Computer Inc. | Anti-acoustics streamline apparatus |
| CN108287600B (en) * | 2017-01-09 | 2020-06-09 | 广达电脑股份有限公司 | Streamline anti-noise device and arithmetic device comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 Termination date: 20100427 |