CN103104559A - Blowing self-cleaning type micropore silencer - Google Patents
Blowing self-cleaning type micropore silencer Download PDFInfo
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- CN103104559A CN103104559A CN2011103702587A CN201110370258A CN103104559A CN 103104559 A CN103104559 A CN 103104559A CN 2011103702587 A CN2011103702587 A CN 2011103702587A CN 201110370258 A CN201110370258 A CN 201110370258A CN 103104559 A CN103104559 A CN 103104559A
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- silencer
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Abstract
The invention relates to the field of silencers, and discloses a blowing self-cleaning type micropore silencer for an air blower. The blowing self-cleaning type micropore silencer for the air blower is composed of multi-hole inserting pipes, an outer shell and a blowing pipe. The blowing self-cleaning type micropore silencer for the air blower is characterized in that the multi-hole inserting pipes are arranged at the right end of the outer shell in an inserting mode, lateral branch resonant cavity chambers are arranged outside the multi-hole inserting pipes. An expanding anechoic room is arranged at the left end of one multi-hole inserting pipe. Double-layer micropore resonance pieces formed by a manner that a microwell plate is connected on a framework in a welding mode are arranged on the left side of the expanding anechoic room. Due to the fact that the technical scheme is adopted, the problem of pneumatic noise is well solved when a special gas draught fan works. Compared with a traditional treatment method, investment cost is greatly reduced. At the same time, the silencer is compact in structure, light in weight and high in noise reduction quantity. The structure method has the advantages of being good in manufacturability, strong in generality and the like.
Description
Technical field
The present invention relates to the silencing apparatus field, is a kind of winding-up self-cleaning type tiny hole noise silencer for blower.
Background technique
At gas-blowing engine, SO
2In the blower fan using process of the one class special gas medium such as blower, often because having corrosivity and contain the oils dirt, gas medium make the working life of matched with blower silencing apparatus extremely short, just lost noise elimination function in common about two months, main cause is exactly that silencing apparatus inner sound absorption material corrosion or sound absorption orifice plate are stopped up by greasy dirt.Fan noise is wideband noise, only have resistive and impedance complex formula silencing apparatus can effectively eliminate wideband noise, but dissipative muffler is all to utilize the micropore sound absorption principle of sound-absorbing material to realize eliminating the noise, the incrustation that will condense when containing oily pollutant in the gas medium by silencing apparatus stops up the sound-absorbing material micropore, makes silencing apparatus lose acoustical absorptivity.For this reason, this type of blower fan does not solve noise problem always preferably, usually adopts pipeline to coat to add blower fan sound insulation or the method directly taking to regularly replace silencing apparatus solves problem of noise pollution, needs so the larger cost of input, causes unnecessary economic waste.
Summary of the invention
The objective of the invention is to provide a kind of new silencing apparatus for blower, adopt the microwell plate noise-cancelling theory and design a kind of can the self-cleaning corrosion-proof type composite muffler of winding-up.
Two key functions in this silencing apparatus eliminate the noise exactly and jet self-cleaning, simultaneously in design rational deployment structural type, make the performance index such as the gas-flow resistance loss of silencing apparatus and reproduced air-flow noise meet designing requirement.Noise-cancelling theory adopts the impedance complex formula to eliminate the noise, and the reactive muffling section is eliminated the noise mainly for low-frequency range, and the resistance noise reduction section is eliminated the noise mainly for high band.
1. eliminate the noise and design
(1) reactive muffling section: utilize tube-inserted type expansion chamber and the resonant cavity noise-cancelling theory of porous collateral branch, tube-inserted type expansion chamber structure is mainly for 500Hz frequency range Noise Design, and porous collateral branch resonance cavity structure of airtight is mainly for 250Hz frequency range Noise Design.Low frequency range noise is eliminated in two kinds of structural segmented comprehensive functions preferably, and they structurally can overlap design in addition, makes noise elimination structure very compact, and boundary dimension is rationally distributed.
(2) resistance noise reduction section: this one adopts the noise-cancelling theory of microperforated panel resonance sound-absorbing structure, utilizes the sound absorption characteristics of microwell plate self, and the resonance sound-absorbing structure that is made of different-thickness two-layer orifice plate is realized eliminating the noise for high-frequency noise.Change microporous sound absorbing structure into by the micropore sound-absorbing material, can realize preferably hydro-peening when guaranteeing acoustic attenuation performance.Usually the main resonant frequency of this structural design is set in the 1KHz-4KHz scope, to reduce the high band noise as main purpose, so both can give full play to the good feature of microwell plate high frequency acoustically effective, the resonant cavity thickness that double-deck orifice plate is formed is less, compact structure.
2. winding-up design
The winding-up design is to utilize high-pressure inert gas (usually adopting nitrogen) to carry out the pulsed winding-up to micropore in silencing apparatus.Nitrogen pressure is set in 5-6kg/cm
2, the tolerance of jetting needs according to concrete winding-up area definition, and what in principle assurance unit winding-up scope, all little hole areas were interior passes through airspeed in the scope of 30-40m/s.
3. the silencing apparatus anti-corrosion measure is mainly just to adopt stainless steel material, selects corresponding stainless steel material according to the corrosive characteristics of different medium gas.
Technological scheme of the present invention is: be comprised of porous intubate, shell, injection tube, the right-hand member that it is characterized in that shell is fitted with the porous intubate, the porous intubate has collateral branch's resonator chamber outward, the left end of porous intubate has the expansion anechoic room, the left side at the expansion anechoic room, by being welded to the double-deck micropore resonance plate that forms on framework by microwell plate, at the left end of shell, injection tube is installed.
Owing to having adopted technique scheme, pneumatic noise problem in the time of can solving preferably the work of special gas blower fan, reduced greatly cost of investment than traditional improvement method, this type acoustic wave filter structure is compact simultaneously, lightweight, sound deadening capacity is high, and has good manufacturability on mode of structure, the characteristics such as highly versatile.
Description of drawings
Fig. 1 is structural representation of the present invention.
In the drawings: 1, porous intubate; 2, collateral branch's resonator chamber; 3, expansion anechoic room; 4, double-deck microwell plate resonance plate; 5, shell; 6, injection tube.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
In Fig. 1, the right-hand member of shell 5 is fitted with porous intubate 1, collateral branch's resonator chamber 2 is arranged outside porous intubate 1, the left end of porous intubate 1 has expansion anechoic room 3, the left side at expansion anechoic room 3, by being welded to the double-deck micropore resonance plate 4 that forms on framework by microwell plate, at the left end of shell 5, injection tube 6 is installed.
Porous intubate 1 is namely also the entrant sound pipe of collateral branch's resonator chamber 2 as the intubate of expansion anechoic room 3 simultaneously, with each one and shell 5 welding, forms collateral branch's resonant cavity 2 and expansion anechoic room 3 by welding procedure; Microwell plate is welded to and forms double-deck micropore resonance plate 4 on framework, utilizes dunnage and shell 5 to be welded and fixed; After fan parking, nitrogen is accessed in 6 pairs of silencing apparatuss of injection tube the micropore cleaning of jetting; After air-flow entered silencing apparatus by porous intubate 1, noise entered collateral branch's resonator chamber 2 by aperture on intubate, decayed by resonance and implemented first step noise elimination; Air-flow enters the 3 generation expansion decelerations of expansion anechoic room by porous intubate 1 and realizes the second step noise elimination, air-flow after deceleration enters double-deck microwell plate resonance plate 4 subsequently, noise produces the resonance decay and realizes the noise elimination of the 3rd step in the double-deck microwell plate resonance plate 4 of multilayer different-thickness, final air-flow is discharged silencing apparatus by outlet.
Claims (1)
1. winding-up self-cleaning type tiny hole noise silencer, formed by porous intubate (1), shell (5), injection tube (6), the right-hand member that it is characterized in that shell (5) is fitted with porous intubate (1), collateral branch's resonator chamber (2) is arranged outside porous intubate (1), the left end of porous intubate (1) has expansion anechoic room (3), the left side at expansion anechoic room (3), by being welded to the double-deck micropore resonance plate (4) that forms on framework by microwell plate, at the left end of shell (5), injection tube (6) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103702587A CN103104559A (en) | 2011-11-14 | 2011-11-14 | Blowing self-cleaning type micropore silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103702587A CN103104559A (en) | 2011-11-14 | 2011-11-14 | Blowing self-cleaning type micropore silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103104559A true CN103104559A (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103702587A Pending CN103104559A (en) | 2011-11-14 | 2011-11-14 | Blowing self-cleaning type micropore silencer |
Country Status (1)
| Country | Link |
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| CN (1) | CN103104559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065336A (en) * | 2015-07-21 | 2015-11-18 | 山西巨龙风机有限公司 | Fan muffler capable of being cleaned |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2142158Y (en) * | 1992-11-24 | 1993-09-15 | 乐山市星火工业锅炉辅机厂 | Disk type intake muffler |
| CN2270838Y (en) * | 1995-04-15 | 1997-12-17 | 铁道部隧道工程局科学研究所 | Noise silencer of axial flow fan for tunnel |
| CN2436655Y (en) * | 2000-01-28 | 2001-06-27 | 王法源 | Wide-frequency multi-section silencer |
| CN202381409U (en) * | 2011-11-14 | 2012-08-15 | 湖北双剑鼓风机制造有限公司 | Jet self-cleaning type microporous muffler |
-
2011
- 2011-11-14 CN CN2011103702587A patent/CN103104559A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2142158Y (en) * | 1992-11-24 | 1993-09-15 | 乐山市星火工业锅炉辅机厂 | Disk type intake muffler |
| CN2270838Y (en) * | 1995-04-15 | 1997-12-17 | 铁道部隧道工程局科学研究所 | Noise silencer of axial flow fan for tunnel |
| CN2436655Y (en) * | 2000-01-28 | 2001-06-27 | 王法源 | Wide-frequency multi-section silencer |
| CN202381409U (en) * | 2011-11-14 | 2012-08-15 | 湖北双剑鼓风机制造有限公司 | Jet self-cleaning type microporous muffler |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065336A (en) * | 2015-07-21 | 2015-11-18 | 山西巨龙风机有限公司 | Fan muffler capable of being cleaned |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 432721 Hubei city of Guangshui Province Economic and Technological Development Zone (Hubei Shuangjian blower manufacturing Co. Ltd.) Applicant after: Hubei Shuangjian Blower Production Co., Ltd. Address before: 432721 Hubei city of Guangshui Province Economic and Technological Development Zone (Hubei Shuangjian blower manufacturing Co. Ltd.) Applicant before: Hubei Shuangjian Blower Production Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHUANGJIAN BLOWER MFG. CO., LTD., HUBEI TO: HUBEI SHUANGJIAN BLOWER PRODUCTION CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |