CN106015110A - Noise absorption and isolation device and silencing method thereof - Google Patents
Noise absorption and isolation device and silencing method thereof Download PDFInfo
- Publication number
- CN106015110A CN106015110A CN201610308050.5A CN201610308050A CN106015110A CN 106015110 A CN106015110 A CN 106015110A CN 201610308050 A CN201610308050 A CN 201610308050A CN 106015110 A CN106015110 A CN 106015110A
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- China
- Prior art keywords
- sound
- absorbing
- abatvoix
- noise
- reflecting plate
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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.)
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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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a noise absorption and isolation device and a silencing method thereof. The noise absorption and isolation device comprises a noise absorption and reflection plate and a first noise absorption plate of a hollow cylinder structure. The noise absorption and reflection plate is located on the front side of a pipe opening of a draught fan inlet pipe. The first noise absorption plate is located on the side, close to the draught fan inlet pipe, of the noise absorption and reflection plate. The first end of the first noise absorption plate is connected with the noise absorption and reflection plate. The second end of the first noise absorption plate is open and covers the draught fan inlet pipe. According to the noise absorption and isolation device and the silencing method thereof, front noise absorption and energy dissipation are conducted through the noise absorption and reflection plate, the first noise absorption plate is arranged in the possible noise reflection direction for further noise absorption and energy dissipation, noise can be reflected repeatedly to be absorbed, the noise absorption and isolation effects are good, and noise can be effectively lowered.
Description
Technical field
The present invention relates to environmental protection machinery field, particularly relate to a kind of sound-absorbing sound arrester and noise reduction method thereof.
Background technology
Blower fan operationally, the turbulent air flow in blade high speed rotating and airflow collision, volute of blower, all can
Producing sharp-pointed noise, noise can be along fans entrance and outlet conduit to atmospheric propagation.The noise base of blower fan
Originally it is based on medium, high frequency, working environment can cause noise pollution, infringement run the person of operator
Healthy.Therefore, from the various blower fans of air air draught typically will fans entrance, fan outlet pipeline set
Put deafener, cut down the noise propagated by air-flow by deafener.Traditional, the noise reduction of fans entrance
Device typically uses the structure of multiple unit channel, lays quieter material in each passage, and air-flow enters deafener
Being become multiply low discharge air-flow by each channel allocation afterwards, the when that air-flow flowing through passage, sound wave is with sound-absorbing material altogether
Shake and loss of energy reduces the purpose of noise.But, owing to sound-absorbing material and the air-flow of deafener are flat
Row is arranged, absorbability is limited, and actual motion effect is unsatisfactory.
Summary of the invention
Based on this, the invention reside in the defect overcoming prior art, it is provided that a kind of sound-absorbing soundproof effect is good, energy
Enough sound-absorbing sound arresters effectively reducing noise and noise reduction method thereof.
Its technical scheme is as follows:
A kind of sound-absorbing sound arrester, including sound-absorbing reflecting plate and the first abatvoix in hollow cylindrical configuration,
Described sound-absorbing reflecting plate is positioned on front side of the mouth of pipe of fans entrance pipe, and it is anti-that described first abatvoix is positioned at described sound-absorbing
Penetrating the plate side near fans entrance pipe, the first end of described first abatvoix is connected with described sound-absorbing reflecting plate,
Second end opening of described first abatvoix is also located at the outside of fans entrance pipe.
Wherein in an embodiment, described sound-absorbing reflecting plate includes reflecting plate body and the second abatvoix, institute
Stating reflecting plate body and be positioned at described second abatvoix side away from fans entrance pipe, described reflection plate body is with described
Second abatvoix connects.
Wherein in an embodiment, described sound-absorbing sound arrester also includes at least one deafener, described in disappear
Sound device is arranged between fans entrance pipe and fan connecting tube.
Wherein in an embodiment, described deafener is multiple, multiple deafener installed in series in orders.
Wherein in an embodiment, described second abatvoix includes the multiple layer sound suction plate being made up of sound-absorbing material
Body.
Wherein in an embodiment, described reflection plate body is aluminium alloy, carbon steel, rustless steel or color steel,
Described first abatvoix, the second abatvoix be polyester fibre acoustic panel, groove wood abatvoix, hole wood abatvoix or
Mineral wool.
Wherein in an embodiment, described sound-absorbing sound arrester also includes for supporting described sound-absorbing reflecting plate
Or first support connecting frame of abatvoix.
Wherein in an embodiment, described sound-absorbing reflecting plate is welded to connect with described first abatvoix.
The noise reduction method of a kind of sound-absorbing sound arrester, comprises the following steps:
It is positioned at the sound-absorbing reflecting plate on front side of the mouth of pipe of fans entrance pipe and carries out the first order to the noise of atmospheric propagation
Sound-absorbing energy dissipating, and the first suction that the partial noise absorbed will not had to reflex to be located at the outside of fans entrance pipe
On soundboard；
First abatvoix carries out second level sound-absorbing energy dissipating to noise.
Wherein in an embodiment, before carrying out first order sound-absorbing energy dissipating, further comprise the steps of:
The deafener being arranged between fans entrance pipe and fan connecting tube is at the beginning of to carrying out to the noise of atmospheric propagation
Level sound-absorbing energy dissipating.
The beneficial effects of the present invention is:
Above-mentioned sound-absorbing sound arrester, by arranging sound-absorbing reflecting plate and the first abatvoix, when noise passes through blower fan
The mouth of pipe of inlet tube is when atmospheric environment is propagated, and part acoustic energy can be absorbed by sound-absorbing reflecting plate, portion
Point do not have absorbed acoustic energy by sound-absorbing baffle reflection to the first abatvoix, and then can continue by first
Abatvoix carries out absorbing and weakens, and the noise finally traveled in atmospheric environment is significantly reduced.Institute
State sound-absorbing sound arrester, carry out front sound-absorbing energy dissipating by sound-absorbing reflecting plate, and in the possible reflection side of sound
Upwards arranging that the first abatvoix carries out further sound-absorbing energy dissipating, noise can be absorbed by multiple reflections, inhales
Sound soundproof effect is good, can effectively reduce noise.
The noise reduction method of described sound-absorbing sound arrester, by carrying out first order sound-absorbing energy dissipating and the second level to noise
Sound-absorbing energy dissipating, noise can be absorbed by multiple reflections, and sound-absorbing soundproof effect is good, can effectively reduce and make an uproar
Sound.
Accompanying drawing explanation
Fig. 1 is the structural representation of the sound-absorbing sound arrester described in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the noise reduction method of the sound-absorbing sound arrester described in the embodiment of the present invention.
Description of reference numerals:
10, sound-absorbing reflecting plate, 110, reflection plate body, the 120, second abatvoix, the 20, first abatvoix,
30, deafener, 100, fans entrance pipe, 200, fan connecting tube.
Detailed description of the invention
Below embodiments of the invention are described in detail:
As it is shown in figure 1, a kind of sound-absorbing sound arrester, including sound-absorbing reflecting plate 10 and in hollow cylindrical configuration
The first abatvoix 20, described sound-absorbing reflecting plate 10 is positioned on front side of the mouth of pipe of fans entrance pipe 100, described
One abatvoix 20 is positioned at described sound-absorbing reflecting plate 10 near the side of fans entrance pipe 100, and described first inhales
First end of soundboard 20 is connected with described sound-absorbing reflecting plate 10, the second end opening of described first abatvoix 20,
Second end shield of described first abatvoix 20 is located at the outside of fans entrance pipe 100.First abatvoix 20
Second end opening, will not hinder the air inlet effect of blower fan, shows the flow direction of air-flow in Fig. 1.This reality
Shi Zhong, described sound-absorbing reflecting plate 10 is attached by welding with described first abatvoix 20, connects reliable,
Noise will not be flowed out by the gap of junction, and soundproof effect is good.
By using said structure, when noise is propagated to atmospheric environment by the mouth of pipe of fans entrance pipe 100,
Part acoustic energy can be absorbed by sound-absorbing reflecting plate 10, and part does not has the absorbed acoustic energy can be by sound-absorbing
Reflecting plate 10 reflexes on the first abatvoix 20, and then continues to be carried out absorbing by the first abatvoix 20 to weaken,
The noise finally traveled in atmospheric environment is significantly reduced.Described sound-absorbing sound arrester, passes through
Sound-absorbing reflecting plate 10 carries out front sound-absorbing energy dissipating, and arranges the first suction on the offside reflection direction that sound is possible
Soundboard 20 carries out further sound-absorbing energy dissipating, and noise can be absorbed by multiple reflections, sound-absorbing soundproof effect is good,
Can effectively reduce noise.
In the present embodiment, described sound-absorbing reflecting plate 10 includes reflecting plate body 110 and the second abatvoix 120,
Described reflection plate body 110 is positioned at described second abatvoix 120 side away from fans entrance pipe 100, described
Reflection plate body 110 is connected with described second abatvoix 120.Using said structure, the second abatvoix 120 leans on
Nearly fans entrance pipe 100, it is possible to have to the noise of atmospheric propagation by the mouth of pipe of fans entrance pipe 100
Effect absorbs, do not have absorbed noise then through after the first abatvoix 120 under the effect of reflection plate body 110
Reflex on the first abatvoix 20, carry out sound-absorbing energy dissipating by the first abatvoix 20, reasonable in design,
Can effectively carry out absorbing sound and lowering noise.
Described sound-absorbing sound arrester also includes that at least one deafener 30, described deafener 30 are arranged on blower fan and enter
Between mouth pipe 100 and fan connecting tube 200.By arranging deafener 30, when noise is along fan connecting tube
200 when atmospheric propagation, and first noise can carry out the sound-absorbing of primary in deafener 30 and weaken, remaining
Acoustic energy is absorbed by sound-absorbing reflecting plate 10 and the first abatvoix 20 the most again, finally travels to atmospheric environment
In noise can significantly be reduced.Described sound-absorbing sound arrester is by comprehensive utilization deafener 30
Resonance erasure effect, the reflection erasure effect of sound-absorbing reflecting plate 10, noise can be by resonating and the most anti-
Injecting row absorption, sound-absorbing soundproof effect is good, can effectively reduce noise, and erasure effect is much better than only with biography
The effect of the deafener 30 of system, it is possible to the health of human body that run operator is effectively ensured.Described deafener 30
Can be one, two or more, in the present embodiment, described deafener 30 is multiple, multiple deafeners 30
Installed in series in order, improves erasure effect further.
Described second abatvoix 120 includes the multiple layer sound suction plate body being made up of sound-absorbing material, it is possible to enter noise
Row effectively absorbs and weakens.Described reflection plate body 110 can be aluminium alloy, carbon steel, rustless steel or color steel
Deng material, described first abatvoix the 20, second abatvoix 120 can be polyester fibre acoustic panel, the suction of groove wood
The materials such as soundboard, hole wood abatvoix or mineral wool.Described reflection plate body the 110, first abatvoix 20, second
Abatvoix 120 uses conventional reflecting material or sound-absorbing material, the simple in construction of described sound-absorbing sound arrester,
Highly versatile, manufacture convenient.
In the present embodiment, described sound-absorbing sound arrester also includes for supporting described sound-absorbing reflecting plate 10 or the first
The support connecting frame (not shown) of abatvoix 20.The actual peace of sound-absorbing sound arrester described in the present embodiment
When dress is arranged, can be directly erected at the front side of fans entrance pipe 100 by support connecting frame, it is also possible to logical
Crossing support connecting frame to be connected with the pipeline of blower fan, concrete can select according to practical situation, mounting means
Flexibly, convenient, highly versatile is moved.
As shown in Figure 1 and Figure 2, the noise reduction method of a kind of sound-absorbing sound arrester, comprise the following steps:
S100: the deafener 30 being arranged between fans entrance pipe 100 and fan connecting tube 200 is to air
The noise propagated carries out primary sound-absorbing energy dissipating, and then first absorbs weakened part noise；
S200: be positioned at the sound-absorbing reflecting plate 10 on front side of the mouth of pipe of fans entrance pipe 100 and make an uproar to atmospheric propagation
Sound carries out first order sound-absorbing energy dissipating, and the partial noise absorbed will not had to reflex to be located at fans entrance pipe 100
Outside the first abatvoix 20 on；
S300: the first abatvoix 20 carries out second level sound-absorbing energy dissipating to noise.
The noise reduction method of described sound-absorbing sound arrester, by noise carries out primary sound-absorbing energy dissipating, the first order is inhaled
Sound energy dissipating and second level sound-absorbing energy dissipating, comprehensively utilize the resonance erasure effect of deafener 30, sound-absorbing reflecting plate 10
Reflection erasure effect, noise can be resonated and multiple reflections absorbs, sound-absorbing soundproof effect is good,
Can effectively reduce noise.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right
The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills
There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change
Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be as the criterion.
Claims (10)
1. a sound-absorbing sound arrester, it is characterised in that include sound-absorbing reflecting plate and in hollow cylindrical configuration
The first abatvoix, described sound-absorbing reflecting plate is positioned on front side of the mouth of pipe of fans entrance pipe, described first abatvoix
Being positioned at described sound-absorbing reflecting plate near the side of fans entrance pipe, the first end of described first abatvoix is with described
Sound-absorbing reflecting plate connects, and the second end opening of described first abatvoix is also located at the outside of fans entrance pipe.
Sound-absorbing sound arrester the most according to claim 1, it is characterised in that described sound-absorbing reflecting plate bag
Including reflection plate body and the second abatvoix, described reflecting plate body is positioned at described second abatvoix away from fans entrance
The side of pipe, described reflection plate body is connected with described second abatvoix.
Sound-absorbing sound arrester the most according to claim 2, it is characterised in that also include that at least one disappears
Sound device, described deafener is arranged between fans entrance pipe and fan connecting tube.
Sound-absorbing sound arrester the most according to claim 3, it is characterised in that described deafener is multiple,
Multiple deafener installed in series in orders.
Sound-absorbing sound arrester the most according to claim 2, it is characterised in that described second abatvoix bag
Include the multiple layer sound suction plate body being made up of sound-absorbing material.
6. according to the sound-absorbing sound arrester described in any one of claim 2-5, it is characterised in that described reflection
Plate body is aluminium alloy, carbon steel, rustless steel or color steel, and described first abatvoix, the second abatvoix are polyester
Fiber abatvoix, groove wood abatvoix, hole wood abatvoix or mineral wool.
7. according to the sound-absorbing sound arrester described in any one of claim 1-5, it is characterised in that also include using
In supporting described sound-absorbing reflecting plate or the support connecting frame of the first abatvoix.
8. according to the sound-absorbing sound arrester described in any one of claim 1-5, it is characterised in that described sound-absorbing
Reflecting plate is welded to connect with described first abatvoix.
9. the noise reduction method of a sound-absorbing sound arrester, it is characterised in that comprise the following steps:
It is positioned at the sound-absorbing reflecting plate on front side of the mouth of pipe of fans entrance pipe and carries out the first order to the noise of atmospheric propagation
Sound-absorbing energy dissipating, and the first suction that the partial noise absorbed will not had to reflex to be located at the outside of fans entrance pipe
On soundboard；
First abatvoix carries out second level sound-absorbing energy dissipating to noise.
The noise reduction method of sound-absorbing sound arrester the most according to claim 9, it is characterised in that entering
Before row first order sound-absorbing energy dissipating, further comprise the steps of:
The deafener being arranged between fans entrance pipe and fan connecting tube is at the beginning of to carrying out to the noise of atmospheric propagation
Level sound-absorbing energy dissipating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308050.5A CN106015110B (en) | 2016-05-10 | 2016-05-10 | Sound-absorbing sound arrester and its noise reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610308050.5A CN106015110B (en) | 2016-05-10 | 2016-05-10 | Sound-absorbing sound arrester and its noise reduction method |
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| Publication Number | Publication Date |
|---|---|
| CN106015110A true CN106015110A (en) | 2016-10-12 |
| CN106015110B CN106015110B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610308050.5A Active CN106015110B (en) | 2016-05-10 | 2016-05-10 | Sound-absorbing sound arrester and its noise reduction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883712A (en) * | 2021-09-29 | 2022-01-04 | 宁波市鸿福风机有限公司 | High-efficient dysmorphism curved surface silencer that commonality is high |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1529946A (en) * | 1976-03-03 | 1978-10-25 | Fans & Blowers Ltd | Silencers for centrifugal blowers |
| CN2561976Y (en) * | 2002-08-02 | 2003-07-23 | 刘汉刚 | Fan silencer |
| CN202348788U (en) * | 2011-11-18 | 2012-07-25 | 河南中烟工业有限责任公司 | Noise reducing device of fan |
| JP2012207618A (en) * | 2011-03-30 | 2012-10-25 | Panasonic Corp | Outdoor blower with sound-absorbing box |
| CN204755412U (en) * | 2015-05-30 | 2015-11-11 | 四特酒有限责任公司 | Air -blower silencing device |
| CN105402170A (en) * | 2015-11-25 | 2016-03-16 | 平安电气股份有限公司 | Air inlet silencer for local ventilator |
| CN205654615U (en) * | 2016-05-10 | 2016-10-19 | 中国能源建设集团广东省电力设计研究院有限公司 | Inhale sound noise insulation |
-
2016
- 2016-05-10 CN CN201610308050.5A patent/CN106015110B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1529946A (en) * | 1976-03-03 | 1978-10-25 | Fans & Blowers Ltd | Silencers for centrifugal blowers |
| CN2561976Y (en) * | 2002-08-02 | 2003-07-23 | 刘汉刚 | Fan silencer |
| JP2012207618A (en) * | 2011-03-30 | 2012-10-25 | Panasonic Corp | Outdoor blower with sound-absorbing box |
| CN202348788U (en) * | 2011-11-18 | 2012-07-25 | 河南中烟工业有限责任公司 | Noise reducing device of fan |
| CN204755412U (en) * | 2015-05-30 | 2015-11-11 | 四特酒有限责任公司 | Air -blower silencing device |
| CN105402170A (en) * | 2015-11-25 | 2016-03-16 | 平安电气股份有限公司 | Air inlet silencer for local ventilator |
| CN205654615U (en) * | 2016-05-10 | 2016-10-19 | 中国能源建设集团广东省电力设计研究院有限公司 | Inhale sound noise insulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883712A (en) * | 2021-09-29 | 2022-01-04 | 宁波市鸿福风机有限公司 | High-efficient dysmorphism curved surface silencer that commonality is high |
| CN113883712B (en) * | 2021-09-29 | 2022-07-22 | 宁波市鸿福风机有限公司 | High-efficient dysmorphism curved surface silencer that commonality is high |
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| Publication number | Publication date |
|---|---|
| CN106015110B (en) | 2018-11-23 |
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