CN203362639U - Draught fan inlet and outlet silencer - Google Patents
Draught fan inlet and outlet silencer Download PDFInfo
- Publication number
- CN203362639U CN203362639U CN 201320309128 CN201320309128U CN203362639U CN 203362639 U CN203362639 U CN 203362639U CN 201320309128 CN201320309128 CN 201320309128 CN 201320309128 U CN201320309128 U CN 201320309128U CN 203362639 U CN203362639 U CN 203362639U
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- CN
- China
- Prior art keywords
- sound
- draught fan
- shell
- fan inlet
- sound absorption
- 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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Abstract
The utility model relates to the field of noise processing, and provides a draught fan inlet and outlet silencer. The draught fan inlet and outlet silencer comprises a shell. The wall of the shell is internally provided with a built-in sound insulating gasket, a double-layer sound absorption micro-hole plate is arranged on the periphery of the interior of the shell, and a plurality of isolating rings are arranged between the outer layer sound absorption micro-hole plate and the shell to isolate cavities with different volumes, the size of the cavities gradually becomes smaller from an inlet to an outlet, and a conical sound absorption body is arranged in the middle of the shell and is composed of double-layer sound absorption micro-hole plates. According to the draught fan inlet and outlet silencer, the characters of sound are fully utilized, the silencing function is very stable, and the service life of the draught fan inlet and outlet silencer is long.
Description
Technical field
The utility model relates to the noise treatment field, is specifically related to a kind of blower fan and imports and exports silencing apparatus.
Background technique
Conventional muffler inside all adopts super glass wool or mineral wool etc. to make sound-absorbing material, in the situation that high temperature, high humidity, high pressure, high flue dust and medium, high frequency (audio frequency) are stronger, easily shatter and inaccessible sound-absorbing material, do not reach soundproof effect.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art part, provides a kind of blower fan to import and export silencing apparatus, takes full advantage of the characteristic of sound, and noise elimination function is very stable, long service life.
The purpose of this utility model is achieved by the following technical measures: a kind of blower fan is imported and exported silencing apparatus, comprise housing, be provided with built-in acoustic pad in described shell body wall, enclosure interior is arranged with the double-layer sound-absorption microwell plate outward, be provided with the cavity that is separated out different volumes between some isolating rings between outer sound absorption microwell plate and housing, successively decrease successively to the outlet end cavity size from entrance point, in the middle of described housing, be provided with the taper sound absorbent, the taper sound absorbent is comprised of the double-layer sound-absorption microwell plate.
In technique scheme, described entrance point and outlet end are provided with adpting flange.
In technique scheme, the aperture of described sound absorption microwell plate is 0.9-1.2mm.
The utility model is compared with traditional silencing apparatus, super glass wool or mineral wool have been cancelled, take full advantage of the characteristic of sound, reach the purpose abated the noise, possessed in the situation that high temperature, high pressure, the many dirt of high humidity can work, and noise elimination function is stable, anechoic frequency bandwidth, good damping effect, the characteristics such as the large function consumption of noise reduction is few.Acoustical absorptivity is more than 25 decibels.
The accompanying drawing explanation
Fig. 1 is the structural representation that the utility model blower fan is imported and exported silencing apparatus.
The plan view that Fig. 2 is Fig. 1.
Wherein: 1. housing, 2. built-in acoustic pad, 3. isolating ring, 4. internal layer sound absorption microwell plate, 5. outer sound absorption microwell plate, 6. adpting flange, 7. taper sound absorbent.
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
As shown in Figure 1, 2, the present embodiment provides a kind of blower fan to import and export silencing apparatus, comprise housing 1, be provided with built-in acoustic pad 2 in described housing 1 wall, housing 1 inner peripheral is provided with the double-layer sound-absorption microwell plate, is provided with 3 of 2 isolating rings between outer sound absorption microwell plate 5 and housing 1 and is separated out three not isometric cavitys, from entrance point, to the outlet end cavity size, successively decreases successively, be provided with taper sound absorbent 7 in the middle of described housing 1, taper sound absorbent 7 is comprised of the double-layer sound-absorption microwell plate.
In the above-described embodiments, described entrance point and outlet end are provided with adpting flange 6.
In the above-described embodiments, the aperture of described sound absorption microwell plate is 0.9-1.2mm.
When the present embodiment is used, import and export and be connected with blower fan by adpting flange 6, cavity in the present embodiment is 3 dilatation scattering of wave mirror fields that are separated out by 3 of isolating rings that differ in size, the sound wave of each primary and secondary frequency is cancelled each other or is absorbed in corresponding each section scattering (reflection) field, arrive the effect of eliminating the noise, remaining noise is absorbed by the taper sound absorbent.
Claims (3)
1. a blower fan is imported and exported silencing apparatus, comprise housing, it is characterized in that: be provided with built-in acoustic pad in described shell body wall, enclosure interior is arranged with the double-layer sound-absorption microwell plate outward, be provided with the cavity that is separated out different volumes between some isolating rings between outer sound absorption microwell plate and housing, successively decrease successively to the outlet end cavity size from entrance point, in the middle of described housing, be provided with the taper sound absorbent, the taper sound absorbent is comprised of the double-layer sound-absorption microwell plate.
2. blower fan according to claim 1 is imported and exported silencing apparatus, and it is characterized in that: described entrance point and outlet end are provided with adpting flange.
3. blower fan according to claim 1 is imported and exported silencing apparatus, and it is characterized in that: the aperture of described sound absorption microwell plate is 0.9-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320309128 CN203362639U (en) | 2013-05-31 | 2013-05-31 | Draught fan inlet and outlet silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320309128 CN203362639U (en) | 2013-05-31 | 2013-05-31 | Draught fan inlet and outlet silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362639U true CN203362639U (en) | 2013-12-25 |
Family
ID=49810413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320309128 Expired - Fee Related CN203362639U (en) | 2013-05-31 | 2013-05-31 | Draught fan inlet and outlet silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362639U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738336A (en) * | 2013-12-31 | 2014-04-23 | 芜湖伯特利汽车安全系统有限公司 | Electronic parking actuator for vehicle brake system |
| CN103850987A (en) * | 2014-02-19 | 2014-06-11 | 江苏常净环保科技有限公司 | Fan muffler for dust remover |
| CN109538538A (en) * | 2018-11-28 | 2019-03-29 | 努比亚技术有限公司 | A kind of processing method of fan noise, mobile terminal and storage medium |
-
2013
- 2013-05-31 CN CN 201320309128 patent/CN203362639U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738336A (en) * | 2013-12-31 | 2014-04-23 | 芜湖伯特利汽车安全系统有限公司 | Electronic parking actuator for vehicle brake system |
| CN103738336B (en) * | 2013-12-31 | 2016-07-06 | 芜湖伯特利汽车安全系统股份有限公司 | A kind of motor vehicle braking system electronic parking actuator |
| CN103850987A (en) * | 2014-02-19 | 2014-06-11 | 江苏常净环保科技有限公司 | Fan muffler for dust remover |
| CN103850987B (en) * | 2014-02-19 | 2016-03-02 | 江苏常净环保科技有限公司 | A kind of muffler for fan for deduster |
| CN109538538A (en) * | 2018-11-28 | 2019-03-29 | 努比亚技术有限公司 | A kind of processing method of fan noise, mobile terminal and storage medium |
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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: 20131225 Termination date: 20140531 |