CN105317755A - Efficient and multistage micropunch fan silencer - Google Patents
Efficient and multistage micropunch fan silencer Download PDFInfo
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- CN105317755A CN105317755A CN201410362416.8A CN201410362416A CN105317755A CN 105317755 A CN105317755 A CN 105317755A CN 201410362416 A CN201410362416 A CN 201410362416A CN 105317755 A CN105317755 A CN 105317755A
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- noise elimination
- elimination cavity
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- silencing
- silencer
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Abstract
The invention discloses an efficient and multistage micropunch fan silencer. The efficient and multistage micropunch fan silencer comprises a silencer protecting cover and an air inlet connector connected with the silencer protecting cover, wherein multistage silencing cavities are formed in the silencer protecting cover and are made of steel plates, and every two silencing cavities are fixed through fixing plates; the multistage silencing cavities comprise a silencing cavity A, a silencing cavity B, a silencing cavity C, a silencing cavity D, a silencing cavity E and a silencing cavity F which are sequentially communicated, the silencing cavity F is mounted in the silencer protecting cover, and the silencing cavity A, the silencing cavity B, the silencing cavity C, the silencing cavity D and the silencing cavity E are welded and fixed together through the fixing plates respectively. Regular micro-perforated holes are processed in the steel plates forming the silencing cavities, so that noise caused by airflow is transmitted to the micro-perforated holes in the multistage silencing cavities through air and causes resonance of the perforated plates outside the silencing cavities, the resonance and the silencing cavities work jointly, and the silencing effect is realized.
Description
Technical field
The invention belongs to fan noise elimination technical field, relate to a kind of high-efficiency multi-stage micropunch fans silencer, be specially adapted to fan pressure higher, require low noise, highly reliable, long-life occasion.
Background technique
As everyone knows, blower fan operationally all will produce noise, in order to avoid when blower fan works to external world environment cause noise pollution, at present various quieter manner is taken to blower fan and noise reduction is carried out to blower fan.As, existing explosion-proof type press in type disrotatory axial flow local ventilating fan for mine, normally inside and outside fan body, be filled with sound absorbing material between air duct, but due to the noise of motor itself, in addition due to the problem of ventilator structure itself, make distinguished and admirable flow velocity uneven, fan blade rotates and causes distinguished and admirable pulse, and relatively rotate the problems such as the eddy current of generation due to Counter rotating axial flow Fan front stage impeller, the noise produced is superimposed, only eliminate the noise by the sound absorbing material between this inside and outside air duct of ventilator, be difficult to the Noise measarement of ventilator at below 85dB, even if import and export at ventilator and add traditional drum type silencing apparatus, also 85dB is far longer than.
Really below 85dB is dropped to for making air-blower noise, publication number is that the Chinese patent of CN202937514U discloses a kind of ZKDG series resistance expansion multi-cavity resonance type ventilator silencer, a first noise elimination cavity urceolus is had at silencing apparatus outermost, there is the second flange at first noise elimination cavity urceolus two ends, and second flange at two ends is connected with the second noise elimination cavity urceolus; Have sound absorbing material, noise elimination cavity inner core in first noise elimination cavity urceolus, have the chamber dividing plate that shakes inside noise elimination cavity inner core, the chamber dividing plate that shakes is connected with guide shell, and the second noise elimination cavity urceolus, guide shell two ends are connected with the first flange.This silencing apparatus is the object being reached noise reducing by the sound absorbing material in noise elimination cavity urceolus and the chamber dividing plate that shakes, but owing to being employing ring packing structure, therefore good resonance can not be formed inside and outside noise elimination cavity, soundproof effect is bad, air loss is larger, the outside coated sound-absorbing material of silencing apparatus is easy to aging impaired, reduces working life and the noise reduction of silencing apparatus.
Again, above-mentioned ventilator silencer is only applicable to explosion-proof type press in type disrotatory axial flow local ventilating fan for mine, at manned space flight and aviation field, for the various blower fans be operated in people's environment, require that the running noises of blower fan is little as much as possible, and according to the aerodynamic performance requirements of blower fan, the noise reduction capability of blower fan itself can not meet, silencing apparatus need be increased in the import and export of blower fan and could reduce noise.Therefore how developing the noise of a kind of high reliability long life silencing apparatus to blower fan effectively to reduce, is current space flight and aviation technical field problem demanding prompt solution.
Summary of the invention
For solving the problem, the invention provides a kind of high-efficiency multi-stage micropunch fans silencer.
The present invention is achieved by following technical solution.
A kind of high-efficiency multi-stage micropunch fans silencer, the intake grill joint comprising silencer shield and be connected with silencer shield, be provided with multistage noise elimination cavity in described silencer shield, wherein multistage noise elimination cavity adopts steel plate to make, between noise elimination cavity and noise elimination cavity, adopt fixed plate to fix.
Described multistage noise elimination cavity comprises the noise elimination cavity A, noise elimination cavity B, noise elimination cavity C, noise elimination cavity D, noise elimination cavity E and the noise elimination cavity F that are communicated with successively, wherein noise elimination cavity F is arranged in silencer shield, and noise elimination cavity A, noise elimination cavity B, noise elimination cavity C, noise elimination cavity D and noise elimination cavity E are welded and fixed together respectively by fixed plate.
The cavity of described noise elimination cavity A, noise elimination cavity B, noise elimination cavity C, noise elimination cavity D, noise elimination cavity E and noise elimination cavity F all adopts corrosion resistant plate to make, and the position being positioned at the connection of noise elimination cavity is on stainless steel processed with micropunch.
Micropunch on described corrosion resistant plate is equidistant triangular arrangement.
Described fixed plate is corrosion resistant plate.
Described silencer shield and intake grill joint are bolted fixing.
The invention has the beneficial effects as follows:
Compared with prior art, the present invention is by arranging multi-stage silencer in silencer shield inside, by processing regular micropunch on the steel plate of composition silencing apparatus cavity, after making air-flow enter intake grill, its runner has carried out repeatedly bending, noise caused by air-flow is by after air borne to the micropunch on multistage noise elimination cavity, cause the resonance of the outer perforated plate of noise elimination cavity, this resonance and noise elimination cavity acting in conjunction, reach the effect of noise elimination, the air loss of silencing apparatus of the present invention is adopted to be only 1.6% (70Pa/4200Pa=0.016), high-frequency noise is eliminated comparatively obvious, be arranged on the air inlet of blower fan, noise can be reduced and be about 12dB (A).
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the micropunch close-up schematic view in the present invention on corrosion resistant plate;
Fig. 3 is that in the present invention, air-flow moves towards schematic diagram.
In figure: 1-intake grill joint, 2-silencer shield, 3-fixed plate, 4-noise elimination cavity A, 5-noise elimination cavity B, 6-noise elimination cavity C, 7-noise elimination cavity D, 8-noise elimination cavity E, 9-noise elimination cavity F.
Embodiment
Technological scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, a kind of high-efficiency multi-stage micropunch fans silencer of the present invention, the intake grill joint 1 comprising silencer shield 2 and be connected with silencer shield 2, multistage noise elimination cavity is provided with in described silencer shield 2, wherein multistage noise elimination cavity adopts steel plate to make, and adopts fixed plate 3 to fix between noise elimination cavity and noise elimination cavity.
Described multistage noise elimination cavity comprises the noise elimination cavity A4, noise elimination cavity B5, noise elimination cavity C6, noise elimination cavity D7, noise elimination cavity E8 and the noise elimination cavity F9 that are communicated with successively, wherein noise elimination cavity F9 is arranged in silencer shield 2, and noise elimination cavity A4, noise elimination cavity B5, noise elimination cavity C6, noise elimination cavity D7 and noise elimination cavity E8 are welded and fixed together respectively by fixed plate 3.
The cavity of described noise elimination cavity A4, noise elimination cavity B5, noise elimination cavity C6, noise elimination cavity D7, noise elimination cavity E8 and noise elimination cavity F9 all adopts corrosion resistant plate to make, the thickness of its corrosion resistant plate is determined according to the size of silencing apparatus and structure, in the technical program, the thickness of stainless-steel sheet is 0.5mm, and the position being positioned at the connection of noise elimination cavity is on stainless steel processed with micropunch.Noise elimination cavity adopts corrosion resistant plate processing, has higher intensity and resistance to environment capacity; The diameter of described micropunch need calculate according to noise elimination frequency spectrum, and in the technical program, pass through the diameter calculating micropunch is 0.5mm.
As shown in Figure 2, the micropunch on described corrosion resistant plate is equidistant triangular arrangement.
Described fixed plate 3 is corrosion resistant plate.
Described silencer shield 2 is bolted fixing with intake grill joint 1, is convenient to installation and removal.
As shown in Figure 1, working principle of the present invention is: the present invention is made up of multistage noise elimination cavity, and every grade of cavity all adopts thickness to be that the corrosion resistant plate of 0.5mm processes, and processes regular micropunch on corresponding corrosion resistant plate, as shown in Figure 2, micropunch regular layout triangular in shape; Adopt stainless steel fixed plate to weld together between noise elimination cavity and noise elimination cavity, noise elimination cavity outermost surface is arranged in silencer shield.As shown in Figure 3, after air-flow enters intake grill, its runner has carried out repeatedly bending, and the noise caused by air-flow, by after air borne to the perforated plate of multistage noise elimination cavity, causes the resonance of the outer perforated plate of noise elimination cavity, this resonance and noise elimination cavity acting in conjunction, reach the effect of noise elimination.
Increase silencing apparatus of the present invention at the intake grill end of blower fan or exhaust outlet, effectively reduce fan noise.Be described with the blower fan that my unit is certain systems engineering development, the flow of blower fan is little, general at about 350L/min, but fan outlet blast is higher, generally be about 4200Pa, the actual noise of fan outlet is about 70dB (A), and after the intake grill end of blower fan increases silencing apparatus of the present invention, the noise reduction of air inlet is to being about 58dB (A).
Claims (6)
1. a high-efficiency multi-stage micropunch fans silencer, the intake grill joint (1) comprising silencer shield (2) and be connected with silencer shield (2), it is characterized in that: in described silencer shield (2), be provided with multistage noise elimination cavity, wherein multistage noise elimination cavity adopts steel plate to make, and adopts fixed plate (3) to fix between noise elimination cavity and noise elimination cavity.
2. a kind of high-efficiency multi-stage micropunch fans silencer according to claim 1, it is characterized in that: described multistage noise elimination cavity comprises the noise elimination cavity A (4), noise elimination cavity B (5), noise elimination cavity C (6), noise elimination cavity D (7), noise elimination cavity E (8) and the noise elimination cavity F (9) that are communicated with successively, wherein noise elimination cavity F (9) is arranged in silencer shield (2), and noise elimination cavity A (4), noise elimination cavity B (5), noise elimination cavity C (6), noise elimination cavity D (7) and noise elimination cavity E (8) are welded and fixed together respectively by fixed plate (3).
3. a kind of high-efficiency multi-stage micropunch fans silencer according to claim 2, it is characterized in that: the cavity of described noise elimination cavity A (4), noise elimination cavity B (5), noise elimination cavity C (6), noise elimination cavity D (7), noise elimination cavity E (8) and noise elimination cavity F (9) all adopts corrosion resistant plate to make, and be positioned at the position that noise elimination cavity is communicated with on stainless steel and be processed with micropunch.
4. a kind of high-efficiency multi-stage micropunch fans silencer according to claim 3, is characterized in that: the micropunch on described corrosion resistant plate is equidistant triangular arrangement.
5. a kind of high-efficiency multi-stage micropunch fans silencer according to claim 1, is characterized in that: described fixed plate (3) is corrosion resistant plate.
6. a kind of high-efficiency multi-stage micropunch fans silencer according to claim 1, is characterized in that: described silencer shield (2) and intake grill joint (1) are bolted fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362416.8A CN105317755A (en) | 2014-07-28 | 2014-07-28 | Efficient and multistage micropunch fan silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410362416.8A CN105317755A (en) | 2014-07-28 | 2014-07-28 | Efficient and multistage micropunch fan silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105317755A true CN105317755A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410362416.8A Pending CN105317755A (en) | 2014-07-28 | 2014-07-28 | Efficient and multistage micropunch fan silencer |
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| Country | Link |
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| CN (1) | CN105317755A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610689A (en) * | 2016-07-12 | 2018-01-19 | 张焕祯 | Sound arrester |
| CN109505808A (en) * | 2018-12-25 | 2019-03-22 | 广东美的白色家电技术创新中心有限公司 | Fans silencer and fan noise elimination system |
| CN110136683A (en) * | 2019-04-23 | 2019-08-16 | 中国人民解放军战略支援部队航天工程大学 | A kind of space launching site tank is deflated and blow-line purging's noise silencer |
| CN114439774A (en) * | 2022-02-16 | 2022-05-06 | 浙江马尔风机有限公司 | Ultralow-noise energy-saving centrifugal fan |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1055796A (en) * | 1991-04-20 | 1991-10-30 | 高永祥 | Filter exhaust muffler |
| CN2143844Y (en) * | 1993-01-13 | 1993-10-13 | 中国石化洛阳石油化工工程公司 | Silencer for fillless motor |
| CN2170379Y (en) * | 1990-03-17 | 1994-06-29 | 内蒙古工学院 | Heat exchange silencer |
| CN2414201Y (en) * | 2000-03-23 | 2001-01-10 | 张根善 | Power boosting fuel-saving silencer for motor vehicle |
| US20090200105A1 (en) * | 2008-02-13 | 2009-08-13 | Geyer Iii Robert E | Silencer apparatus with disposable silencer cartridge unit |
| CN201614958U (en) * | 2009-10-21 | 2010-10-27 | 刘泗海 | Novel environmental-protection multi-stage silencer |
| CN202937514U (en) * | 2012-07-08 | 2013-05-15 | 刘凡岩 | ZKDG series resistance-enlarging multi-cavity resonance type ventilation fan silencer |
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2014
- 2014-07-28 CN CN201410362416.8A patent/CN105317755A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2170379Y (en) * | 1990-03-17 | 1994-06-29 | 内蒙古工学院 | Heat exchange silencer |
| CN1055796A (en) * | 1991-04-20 | 1991-10-30 | 高永祥 | Filter exhaust muffler |
| CN2143844Y (en) * | 1993-01-13 | 1993-10-13 | 中国石化洛阳石油化工工程公司 | Silencer for fillless motor |
| CN2414201Y (en) * | 2000-03-23 | 2001-01-10 | 张根善 | Power boosting fuel-saving silencer for motor vehicle |
| US20090200105A1 (en) * | 2008-02-13 | 2009-08-13 | Geyer Iii Robert E | Silencer apparatus with disposable silencer cartridge unit |
| CN201614958U (en) * | 2009-10-21 | 2010-10-27 | 刘泗海 | Novel environmental-protection multi-stage silencer |
| CN202937514U (en) * | 2012-07-08 | 2013-05-15 | 刘凡岩 | ZKDG series resistance-enlarging multi-cavity resonance type ventilation fan silencer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610689A (en) * | 2016-07-12 | 2018-01-19 | 张焕祯 | Sound arrester |
| CN109505808A (en) * | 2018-12-25 | 2019-03-22 | 广东美的白色家电技术创新中心有限公司 | Fans silencer and fan noise elimination system |
| CN109505808B (en) * | 2018-12-25 | 2024-02-20 | 广东美的白色家电技术创新中心有限公司 | Fan silencer and fan silencing system |
| CN110136683A (en) * | 2019-04-23 | 2019-08-16 | 中国人民解放军战略支援部队航天工程大学 | A kind of space launching site tank is deflated and blow-line purging's noise silencer |
| CN114439774A (en) * | 2022-02-16 | 2022-05-06 | 浙江马尔风机有限公司 | Ultralow-noise energy-saving centrifugal fan |
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| PB01 | Publication | ||
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Application publication date: 20160210 |