CN107401527B - Fan silencing device - Google Patents
Fan silencing device Download PDFInfo
- Publication number
- CN107401527B CN107401527B CN201710728550.9A CN201710728550A CN107401527B CN 107401527 B CN107401527 B CN 107401527B CN 201710728550 A CN201710728550 A CN 201710728550A CN 107401527 B CN107401527 B CN 107401527B
- Authority
- CN
- China
- Prior art keywords
- silencer
- silencing
- fan
- channel
- silencing channel
- 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.)
- Active
Links
- 230000030279 gene silencing Effects 0.000 title claims abstract description 75
- 230000003584 silencer Effects 0.000 claims abstract description 62
- 229920000742 Cotton Polymers 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 12
- 238000012360 testing method Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan silencer which comprises a silencing channel (1), a front silencer (3), a rear silencer (4) and a lengthening silencer (6), wherein first silencing cotton (2) is arranged on the inner wall of the silencing channel (1). The front silencer (3) and the rear silencer (4) are connected with each other, the silencing channel (1) comprises a front silencing channel (1 a) arranged in the front silencer (3), a rear silencing channel (1 b) arranged in the rear silencer (4) and a lengthened silencing channel (1 c) arranged in the lengthened silencer (6), the front silencing channel (1 a) accommodates the front part of the fan, the rear silencing channel (1 b) accommodates the rear part of the fan, and the lengthened silencer (6) is arranged in the front silencer (1 a) and can move relative to the front silencer. The fan silencer enables noise generated by the fan to be reabsorbed through reasonable structural design, and noise pollution is greatly reduced.
Description
Technical Field
The invention relates to a fan silencing device.
Background
The fan is a machine for increasing the pressure of gas and discharging the gas by means of input mechanical energy, and is widely used in industry and life. Fans are required in many industrial processes and tests to provide ventilation or to provide wind simulation. However, when the fan works, relatively large noise is generated, and certain influence is caused on the test work of the fan.
Disclosure of Invention
The present invention has been made in view of the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a fan silencer capable of suppressing fan noise.
In order to achieve the aim of the invention, the invention adopts the following technical scheme: a fan silencing device, its characterized in that: the fan silencing device is provided with a silencing channel for accommodating the fan, and the inner wall of the silencing channel is provided with first silencing cotton.
In addition, the invention also provides the following auxiliary technical scheme:
the fan silencer comprises a front silencer and a rear silencer which are connected with each other.
The sound deadening passageway includes a front sound deadening passageway disposed within a front sound deadening device, the front sound deadening passageway being for accommodating the front of the blower.
The sound deadening passageway includes a rear sound deadening passageway disposed in the rear sound deadening device, the rear sound deadening passageway being for accommodating the rear of the blower.
The front and rear silencing channels are communicated with each other.
The front silencing channel and the rear silencing channel form an included angle of 90 degrees.
The rear muffler is provided with a plurality of muffler plates that divide the rear muffler passage into a plurality of cavities.
The fan silencer further comprises a lengthened silencer, the lengthened silencer is arranged in the front silencing channel, and the lengthened silencer and the front silencer can move relatively.
The lengthened silencer comprises a metal plate outer frame and second silencing cotton arranged on the inner portion and the outer portion of the metal plate outer frame, and the metal plate outer frame can accommodate the fan.
The metal plate outer frame forms a silencing channel.
Compared with the prior art, the invention has the advantages that: according to the invention, the silencing channel connected with the silencing cotton is arranged outside the fan, so that noise generated when the fan operates is effectively reduced, and the length of the silencing channel is adjustable, so that the noise of the fan is effectively reduced.
Drawings
FIG. 1 is a schematic view of a fan silencer according to the present invention.
Detailed Description
The technical scheme of the present invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings.
As shown in fig. 1, the fan silencer of the present invention includes a silencer duct 1, a front silencer 3 and a rear silencer 4 connected to each other, and an elongated silencer 6 movable relative to the front silencer 3, and the silencer duct 1 includes a front silencer duct 1a provided in the front silencer 3, a rear silencer duct 1b provided in the rear silencer 4, and an elongated silencer duct 1c provided in the elongated silencer 6. The front and rear silencing channels 1a, 1b are mutually communicated and form an included angle of 90 degrees. The front silencing channel 1a is used for accommodating the front part of the fan, the rear silencing channel 1b is used for accommodating the rear part of the fan, and the fan is integrally arranged in the silencing channel 1. The inner walls of the front silencing channel 1a and the rear silencing channel 1b are respectively provided with first silencing cotton 2, and the first silencing cotton 2 and the inner wall can be adhered by glue, and the thickness of the first silencing cotton 2 and the inner wall is preferably 50mm. The air outlet of the rear silencer 4 is provided with a plurality of parallel arranged silencing sheets 5, in this embodiment, 3 silencing sheets 5 divide the rear silencing channel 1b into 4 cavities, so that the silencing area can be increased to better eliminate noise. The lengthened silencer device 6 comprises a metal plate outer frame 7 which is approximately U-shaped and second silencing cotton 8 which is arranged on the inner portion and the outer portion of the metal plate outer frame 7, a lengthened silencing channel 1c is formed in the metal plate outer frame 7, and the lengthened silencer device 6 is arranged in the front silencing channel 1a and can accommodate a fan. When not in use, the lengthened silencing device 6 can be pushed into the front silencing channel 1a, so that occupied space is reduced; when the fan silencer is used, the required length can be pulled out according to the requirement, so that the silencing effect of the fan silencer is further improved.
After the fan is started, air flows through the lengthened silencing channel 1c and the front silencing channel 1a and is discharged from the rear silencing channel 1b, and generated noise is reabsorbed by the second silencing cotton 8 arranged inside and outside the sheet metal outer frame 7, the first silencing cotton 2 arranged on the inner walls of the front silencing channel 1a and the rear silencing channel 1b and the silencing sheet 5 arranged on the tail part of the rear silencing device 1b, so that the noise generated by the fan is greatly reduced; in addition, the air flow generated by the fan passes through a 90-degree bend after flowing into the rear silencing channel, so that the energy of the air flow is greatly absorbed, and the noise of the air flow is further reduced. Through testing, the fan silencer can meet the testing requirement of 25dB isolation volume.
According to the fan silencer disclosed by the invention, through reasonable structural design, noise is reabsorbed by the second silencing cotton 8, the first silencing cotton 2, the silencing sheet 5 and the like after the fan is started, so that the noise of the fan is greatly reduced, and the lengthened silencer 6 can be stored in the front silencing channel 1a when not used, so that the space occupation is reduced.
It should be noted that the foregoing description of the preferred embodiments is merely illustrative of the technical concept and features of the present invention, and is not intended to limit the scope of the invention, as long as the scope of the invention is defined by the claims and their equivalents. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (1)
1. A fan silencing device, its characterized in that: the fan silencer is provided with a silencer channel (1) for accommodating the fan, first silencing cotton (2) is arranged on the inner wall of the silencer channel (1), the silencer channel (1) comprises a silencer device (3), a front silencer channel (1 a) is arranged in the front silencer device (3), the front silencer channel (1 a) is used for accommodating the front part of the fan, the fan silencer device further comprises a lengthening silencer device (6), the lengthening silencer device (6) is arranged in the front silencer channel (1 a), and the lengthening silencer device (6) and the front silencer device (3) can move relatively;
the fan silencer comprises a front silencer (3) and a rear silencer (4) which are connected with each other;
the silencing channel (1) comprises a rear silencing channel (1 b) arranged in the rear silencing device (4), and the rear silencing channel (1 b) is used for accommodating the rear part of the fan;
the front and rear silencing channels (1 a, 1 b) are communicated with each other;
the front silencing channel (1 a) and the rear silencing channel (1 b) form an included angle of 90 degrees;
the rear silencing device (4) is provided with a plurality of silencing sheets (5), and the rear silencing channel (1 b) is divided into a plurality of cavities by the plurality of silencing sheets (5);
the lengthened silencing device (6) comprises a metal plate outer frame (7) and second silencing cotton (8) arranged on the inner part and the outer part of the metal plate outer frame (7), and the metal plate outer frame (7) can accommodate the fan;
the silencing channel (1) further comprises a silencing channel (1 c) formed by the sheet metal outer frame (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728550.9A CN107401527B (en) | 2017-08-23 | 2017-08-23 | Fan silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710728550.9A CN107401527B (en) | 2017-08-23 | 2017-08-23 | Fan silencing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107401527A CN107401527A (en) | 2017-11-28 |
| CN107401527B true CN107401527B (en) | 2023-12-26 |
Family
ID=60397520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710728550.9A Active CN107401527B (en) | 2017-08-23 | 2017-08-23 | Fan silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107401527B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988730A (en) * | 2009-08-03 | 2011-03-23 | 乐金电子(天津)电器有限公司 | Mobile air conditioner capable of lowering resistance and noise of exhaust pipe |
| CN102400958A (en) * | 2011-11-18 | 2012-04-04 | 南通大通宝富风机有限公司 | Multifunctional nuclear power fan |
| CN102705045A (en) * | 2012-05-24 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Fire extinguishing device for exhaust pipe of well drilling diesel engine |
| CN103485865A (en) * | 2013-08-26 | 2014-01-01 | 中国石油化工集团公司 | Exhaust pipe of diesel engine for well drilling |
| CN204175670U (en) * | 2014-07-10 | 2015-02-25 | 云南东道饲料有限公司 | A kind of blower fan silencing device that can be used for feed-processing plant |
| CN105736478A (en) * | 2016-03-30 | 2016-07-06 | 王刚 | Sound insulation and noise reduction device of draught fan |
-
2017
- 2017-08-23 CN CN201710728550.9A patent/CN107401527B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988730A (en) * | 2009-08-03 | 2011-03-23 | 乐金电子(天津)电器有限公司 | Mobile air conditioner capable of lowering resistance and noise of exhaust pipe |
| CN102400958A (en) * | 2011-11-18 | 2012-04-04 | 南通大通宝富风机有限公司 | Multifunctional nuclear power fan |
| CN102705045A (en) * | 2012-05-24 | 2012-10-03 | 中国石油集团西部钻探工程有限公司 | Fire extinguishing device for exhaust pipe of well drilling diesel engine |
| CN103485865A (en) * | 2013-08-26 | 2014-01-01 | 中国石油化工集团公司 | Exhaust pipe of diesel engine for well drilling |
| CN204175670U (en) * | 2014-07-10 | 2015-02-25 | 云南东道饲料有限公司 | A kind of blower fan silencing device that can be used for feed-processing plant |
| CN105736478A (en) * | 2016-03-30 | 2016-07-06 | 王刚 | Sound insulation and noise reduction device of draught fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107401527A (en) | 2017-11-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |