CN2561976Y - Fan silencer - Google Patents
Fan silencer Download PDFInfo
- Publication number
- CN2561976Y CN2561976Y CN 02247075 CN02247075U CN2561976Y CN 2561976 Y CN2561976 Y CN 2561976Y CN 02247075 CN02247075 CN 02247075 CN 02247075 U CN02247075 U CN 02247075U CN 2561976 Y CN2561976 Y CN 2561976Y
- Authority
- CN
- China
- Prior art keywords
- large cylinder
- cover
- cylinder body
- blower fan
- refecting
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
An air blower muffler relates to the technology field of air supply machinery, which is structured in that a large cylinder body is inwardly arranged with a small cylinder body, a plurality of silencing channels with polygonal cross sections distributed along the axial line direction of the large cylinder body between the large cylinder body and the small cylinder body, one end of the large cylinder body air inlet is arranged with a reflection cover protruding towards the large cylinder body direction, the bottom surface thereof is sealed, and the cover surface thereof is opened with a sound hole, the reflection cover surface is connected with a plurality of cylinder bodies with unequal sizes. The utility model is ordinarily arranged on the front end of the axial flow fan used for decreasing the air blower noise, which has the advantages of small volume and good noise reduction effect comparing with the prior art.
Description
Technical field
The utility model relates to the air-supply field of mechanical technique, and especially a kind of air inlet place that is contained in is used to reduce the machine of fan noise.
Background technique
Noise is all very big during its running of the blower fan that blower fan, especially volume are little, blast is high, air quantity is big, generally all has 90 decibels to 118 decibels.In the mine, metallurgy etc. needs the occasion of long distance air-supply, air draft, people generally are that the pipeline that one section inwall adheres to sound absorbing material is set at the air inlet place in order to fall back noise.Adopt this mode absorbing sound and lowering noise, its facility volume is big, insecure, and noise reduction is not really desirable.
Summary of the invention
It is little that subject matter to be solved in the utility model provides a kind of volume, the blower fan silencing apparatus of excellent noise reduction effect.
In order to address the above problem, the scheme that the utility model adopts is: it is provided with a little cylindrical shell in a large cylinder, being distributed with a plurality of cross sections along the axial direction of large cylinder between described large cylinder and described little cylindrical shell is polygonal silencers channel, intake grill one end of described large cylinder is equipped with that bottom surface sealing, cover have voice guide hole and to the refecting cover of large cylinder direction projection, the cover of this refecting cover is connected with a plurality of cylindrical shells that differ in size.
Sound absorbing material is preferably installed in above-mentioned large cylinder, little cylindrical shell and inboard, described refecting cover bottom surface; The cover of above-mentioned refecting cover can be a cone shape; Exhaust outlet one end of above-mentioned large cylinder also can in be provided with the fluid dividing cover that enlarges to described large cylinder exhaust outlet direction, this fluid dividing cover generally can be a cone shape.
Described sound absorbing material is meant that having porous crack, softness etc. reaches on it and the material that is attenuated when sound wave.
Owing to adopted such scheme, the utility model compared with prior art has following beneficial effect:
1, volume is little, only is about 30% of prior art.
2, excellent noise reduction effect, test with an axial-flow blower that is loaded on the exhaust duct front end, near the prior art that adopts sound absorbing material that large-area sound-absorbing face is installed the intake grill is replaced by blower fan silencing apparatus of the present utility model, can makes noise reduce to 95～100 decibels by 110 decibels.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the sectional view at A-A place among Fig. 1.
Fig. 3 is the sectional view at B-B place among Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing example structure of the present utility model is described in further detail:
Fig. 1, Fig. 2, in the example shown in Figure 3, this blower fan silencing apparatus has a large cylinder 11, be provided with a little cylindrical shell 6 that length is less in large cylinder 11 intake grills one end, be distributed with along the axial direction of large cylinder 6 between large cylinder 11 and little cylindrical shell 6 that a plurality of to constitute cross section by cylinder and accordion partition be leg-of-mutton silencers channel 5, intake grill one end of large cylinder is equipped with the refecting cover of bottom surface sealing by support 2, the cover 3 of refecting cover is a cone shape, have voice guide hole on the cover 3 and, also be connected with 6 cylindrical shells that differ in size 4 on the cover 3 to large cylinder 11 intake grill direction projectioies.Inner side surface at large cylinder 11 exhaust outlets one end is equipped with sound absorbing material 10, also be provided with the fluid dividing cover 8 of the cone shape that enlarges to the exhaust outlet direction in exhaust outlet one end of large cylinder 11, inner side surface at little cylindrical shell 6 is equipped with sound absorbing material 7, in inboard, refecting cover bottom surface sound absorbing material 1 is housed.Wherein sound absorbing material 1, sound absorbing material 7 and sound absorbing material 10 are sponge.
Claims (4)
1, a kind of blower fan silencing apparatus, it is characterized in that: it is provided with a little cylindrical shell in a large cylinder, being distributed with a plurality of cross sections along the axial direction of large cylinder between described large cylinder and described little cylindrical shell is polygonal silencers channel, intake grill one end of described large cylinder is equipped with that bottom surface sealing, cover have voice guide hole and to the refecting cover of large cylinder direction projection, the cover of this refecting cover is connected with a plurality of cylindrical shells that differ in size.
2, blower fan silencing apparatus according to claim 1 is characterized in that: sound absorbing material is equipped with in described large cylinder, little cylindrical shell and inboard, described refecting cover bottom surface.
3, blower fan silencing apparatus according to claim 1 and 2, it is characterized in that: the cover of described refecting cover is a cone shape; Be provided with the fluid dividing cover that enlarges to described large cylinder exhaust outlet direction in exhaust outlet one end of described large cylinder.
4, blower fan silencing apparatus according to claim 3, it is characterized in that: described fluid dividing cover is a cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02247075 CN2561976Y (en) | 2002-08-02 | 2002-08-02 | Fan silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02247075 CN2561976Y (en) | 2002-08-02 | 2002-08-02 | Fan silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2561976Y true CN2561976Y (en) | 2003-07-23 |
Family
ID=33718115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02247075 Expired - Fee Related CN2561976Y (en) | 2002-08-02 | 2002-08-02 | Fan silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2561976Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536917A (en) * | 2011-07-19 | 2012-07-04 | 平安电气股份有限公司 | Internal conical barrel muffler for mining fan |
| CN105402170A (en) * | 2015-11-25 | 2016-03-16 | 平安电气股份有限公司 | Air inlet silencer for local ventilator |
| CN105626560A (en) * | 2015-11-25 | 2016-06-01 | 平安电气股份有限公司 | All-plastic local ventilator |
| CN105864108A (en) * | 2015-01-22 | 2016-08-17 | 中国科学院声学研究所 | Silencer for draught fan air inlet |
| CN106015110A (en) * | 2016-05-10 | 2016-10-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Noise absorption and isolation device and silencing method thereof |
| CN107536562A (en) * | 2017-09-08 | 2018-01-05 | 苏州海歌电器科技有限公司 | Mute type dust catcher air discharge structure |
| CN107882774A (en) * | 2016-09-29 | 2018-04-06 | 山洋电气株式会社 | Fan |
| WO2018196236A1 (en) * | 2017-04-23 | 2018-11-01 | 阿润 | Noise-reduction bricks having bell mouth |
| CN109196232A (en) * | 2016-04-21 | 2019-01-11 | 史密斯医疗 Asd 公司 | Fire cannon |
-
2002
- 2002-08-02 CN CN 02247075 patent/CN2561976Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536917A (en) * | 2011-07-19 | 2012-07-04 | 平安电气股份有限公司 | Internal conical barrel muffler for mining fan |
| CN105864108A (en) * | 2015-01-22 | 2016-08-17 | 中国科学院声学研究所 | Silencer for draught fan air inlet |
| CN105864108B (en) * | 2015-01-22 | 2018-08-07 | 中国科学院声学研究所 | A kind of air inlet silencer |
| CN105402170A (en) * | 2015-11-25 | 2016-03-16 | 平安电气股份有限公司 | Air inlet silencer for local ventilator |
| CN105626560A (en) * | 2015-11-25 | 2016-06-01 | 平安电气股份有限公司 | All-plastic local ventilator |
| CN109196232A (en) * | 2016-04-21 | 2019-01-11 | 史密斯医疗 Asd 公司 | Fire cannon |
| CN106015110A (en) * | 2016-05-10 | 2016-10-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Noise absorption and isolation device and silencing method thereof |
| CN107882774A (en) * | 2016-09-29 | 2018-04-06 | 山洋电气株式会社 | Fan |
| WO2018196236A1 (en) * | 2017-04-23 | 2018-11-01 | 阿润 | Noise-reduction bricks having bell mouth |
| CN107536562A (en) * | 2017-09-08 | 2018-01-05 | 苏州海歌电器科技有限公司 | Mute type dust catcher air discharge structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |