CN2064874U - Ventilation air conditioning muffler - Google Patents
Ventilation air conditioning muffler Download PDFInfo
- Publication number
- CN2064874U CN2064874U CN 90212708 CN90212708U CN2064874U CN 2064874 U CN2064874 U CN 2064874U CN 90212708 CN90212708 CN 90212708 CN 90212708 U CN90212708 U CN 90212708U CN 2064874 U CN2064874 U CN 2064874U
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- CN
- China
- Prior art keywords
- absorber
- plate
- muffler
- resonance
- air conditioning
- 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.)
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Abstract
The utility model relates to a ventilation air conditioning muffler, belonging to the industry of environmental protection, and comprising a plurality of silencing units composed of sound absorption sheets and flow deflectors. Organization optimization is carried out on the basis of an existing slab composite muffler, and the structures of silencing wedge and continuously changing resonating-cavity are adopted; so the silencing quantity is improved further, and the resistance coefficient of the muffler is reduced. The utility model has the advantages of stable performance and beautiful configuration, and the ventilation air conditioning muffler is widely suitable for the ventilating engineering of civil construction, medicine, chemical industry and electric power system.
Description
The utility model relates to a kind of air conditioner silencer, belongs to the environment protection equipment field, is mainly used in ventilation and air conditioning system, eliminates aerodynamic noise.
At present, the state-of-the-art silencer that uses all is to adopt slice structure both at home and abroad, strip-type silencer possesses many advantages, result of use is also relatively good, but still the part that comes with some shortcomings, at noise frequency is to form a noise elimination low ebb about 500HZ, and 500HZ is for eliminating an important frequency of noise, so strip-type silencer centering, that low-frequency noise is eliminated effect is undesirable.The curve of eliminating the noise is in addition owed smoothly, and the root mean square of sound deadening capacity is lower, thereby neither be best for eliminating noise effects.
Because there is above-mentioned deficiency in strip-type silencer, the purpose of this utility model is to provide a kind of anechoic frequency bandwidth, strip-type silencer that sound deadening capacity is big.
The utility model is to realize like this.A kind of air conditioner silencer, it is that 5. and therein some resonance absorbers by two symmetries insert the noise elimination unit that 3. a monolithic sound absorber form and constitute, resonance absorber 5. by acoustical plate 3., two symmetries with acoustical plate 3. the flow deflector that links to each other of two ends 1. 4. form with 3 dividing plates that 3. intersect vertically with acoustical plate, wherein 4. 2 dividing plates are placed on 3. two ends of acoustical plate.4. another dividing plate is in acoustical plate and 3. goes up a certain position, that is to say, be in dividing plate that 3. acoustical plate go up a certain position 4. by acoustical plate 3., with acoustical plate 3. two dividing plates linking to each other of two ends 4. be divided into two with the single resonant cavity that wall constitutes, form 2 different resonant frequencies.As Fig. 1, the noise elimination unit of Here it is existing strip-type silencer, and this structure just designs resonance absorber resonant frequency 5. on two single resonant frequencies, thereby form a frequency low ebb.
Because the appearance of frequency low ebb, it is unsmooth that the noise elimination curve also is, and whole noise elimination effect is undesirable, the utility model resonance absorber 5. the flow deflector of windward side 1. change and constitute by sound-absorbing material, increase the sound absorption area, also just improved the noise elimination value of each frequency band of silencer.4. 3. acoustical plate form single resonant cavity with wall with the dividing plate at its two ends, middle no dividing plate 4., thereby the resonant frequency of this resonant cavity is defined as single resonant frequency 500HZ, strengthened the resonance sound-absorbing coefficient of 500HZ.Resonance absorber rear end flow deflector 5. 1. be a wedge absorber 6., along with volume constantly changes, frequency of noise elimination is a continuous spectrum, form the above continuous frequency conversion resonant cavity of a 500HZ, the resonant frequency coverage rate is increased, increased noise elimination stack amount, owing to above-mentioned two kinds of reasons, thereby having remedied the noise elimination low ebb, curve also is smoothly, referring to Fig. 2 and noise elimination curve map 2.
The monolithic sound absorber 3. afterbody be placed upside down one resonance sound absorber 5., its center line and monolithic sound absorber central lines 3., because this fairshaped body structure, see Fig. 2, when sound wave during by the noise elimination unit through repeatedly reflection, given full play to the effect of sound absorption unit in the silencer, in fact be equivalent to increase the length of silencer, increased the effective sound path of sound by silencer, thereby the following frequency of noise elimination of 500HZ also increases, because the required requirement of sound deadening capacity of low frequency part own is not too high, thereby this strip-type silencer is fine in low frequency muffling part effect.This in addition out-of-date, unblocked when air communication near fairshaped passage, reduced the air-flow flow resistance, see Fig. 2.
The utility model is owing to adopt novel slice structure, makes strip-type silencer have anechoic frequency bandwidth, sound deadening capacity is big, the silencer resistance coefficient is low excellent properties.
Below in conjunction with accompanying drawing the utility model is further specified,
Fig. 1 is the noise elimination cell schematics of former strip-type silencer.
Fig. 2 is the noise elimination cell schematics of existing strip-type silencer.
1---flow deflector 3---acoustical plate 4---dividing plate
5---resonance absorber 6---wedge absorber
Embodiment: the utility model has carried out optimal design to sheet spacing and length of a film, design two a kinds of pitch of fins (pitch of fins 400,500), with the cross dimensions (400 and 500 multiples) that adapts to standard air chute, every kind of pitch of fins has three kinds of length ［ 1500,2500,3500(mm) ］ adapting to the needs of different sound deadening capacities, every kind of pitch of fins and length are the best design parameter point.This silencer can be installed in the civil engineering air channel at the scene by two kinds of pitch of fins and three kind of length production standard spare, and does not need muffler shell; Also can make steel casing, silencer integral body enters the scene of using.The noise elimination unit is installed firmly civil engineering air channel planted agent, and should install rubber or froth bed additional in noise elimination unit and junction, civil engineering air channel, reduces the noise elimination effect in order to avoid cause the vibration of noise elimination unit.
Claims (1)
- A kind of air conditioner silencer, it is that 5. and therein some resonance absorbers by two symmetries insert the noise elimination unit that 3. a monolithic sound absorber form and constitute, by acoustical plate 3. 5. resonance absorber be, two symmetries with acoustical plate 3. the flow deflector that links to each other of two ends 1. 4. form with 3 dividing plates that 3. intersect vertically with acoustical plate, wherein 4. 2 dividing plates are placed on 3. two ends of acoustical plate, 4. another dividing plate is in acoustical plate and 3. goes up a certain position, it is characterized in that: 1. the resonance absorber 5. flow deflector of windward side is made of sound-absorbing material, the rear end flow deflector 1. be a wedge absorber 6., 4. 3. acoustical plate form a single resonant cavity with wall with the dividing plate at its two ends, middle no dividing plate 4., the monolithic sound absorber 3. afterbody be placed upside down one resonance sound absorber 5., its center line and monolithic sound absorber central lines 3..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212708 CN2064874U (en) | 1990-05-31 | 1990-05-31 | Ventilation air conditioning muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212708 CN2064874U (en) | 1990-05-31 | 1990-05-31 | Ventilation air conditioning muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2064874U true CN2064874U (en) | 1990-10-31 |
Family
ID=4892244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212708 Withdrawn CN2064874U (en) | 1990-05-31 | 1990-05-31 | Ventilation air conditioning muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2064874U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949568A (en) * | 2010-10-19 | 2011-01-19 | 东南大学 | Maze type broadband sound-proof ventilator |
| CN102912759A (en) * | 2012-11-09 | 2013-02-06 | 昆明中铁大型养路机械集团有限公司 | Shunting interference muffling air exhaust and noise reduction device and railway track bed blowing and sucking sweeping work device |
| CN104952440A (en) * | 2015-06-30 | 2015-09-30 | 成都普创通信技术股份有限公司 | Array muffler |
| CN104949313A (en) * | 2015-06-30 | 2015-09-30 | 成都普创通信技术股份有限公司 | Noise eliminating column structure for noise eliminator |
| CN105023567A (en) * | 2015-07-06 | 2015-11-04 | 珠海格力电器股份有限公司 | Resonant silencer |
| CN105575379A (en) * | 2015-12-18 | 2016-05-11 | 北汽福田汽车股份有限公司 | Muffler chamber and muffler used therefor |
| CN111059752A (en) * | 2019-07-05 | 2020-04-24 | 青岛海信日立空调系统有限公司 | Air duct machine |
-
1990
- 1990-05-31 CN CN 90212708 patent/CN2064874U/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949568A (en) * | 2010-10-19 | 2011-01-19 | 东南大学 | Maze type broadband sound-proof ventilator |
| CN102912759A (en) * | 2012-11-09 | 2013-02-06 | 昆明中铁大型养路机械集团有限公司 | Shunting interference muffling air exhaust and noise reduction device and railway track bed blowing and sucking sweeping work device |
| CN102912759B (en) * | 2012-11-09 | 2014-05-07 | 昆明中铁大型养路机械集团有限公司 | Shunting interference muffling air exhaust and noise reduction device and railway track bed blowing and sucking sweeping work device |
| CN104952440A (en) * | 2015-06-30 | 2015-09-30 | 成都普创通信技术股份有限公司 | Array muffler |
| CN104949313A (en) * | 2015-06-30 | 2015-09-30 | 成都普创通信技术股份有限公司 | Noise eliminating column structure for noise eliminator |
| CN104952440B (en) * | 2015-06-30 | 2019-01-11 | 成都普创通信技术股份有限公司 | Array type silencer |
| CN105023567A (en) * | 2015-07-06 | 2015-11-04 | 珠海格力电器股份有限公司 | Resonant silencer |
| CN105575379A (en) * | 2015-12-18 | 2016-05-11 | 北汽福田汽车股份有限公司 | Muffler chamber and muffler used therefor |
| CN105575379B (en) * | 2015-12-18 | 2019-09-20 | 北汽福田汽车股份有限公司 | Anechoic room and silencer for it |
| CN111059752A (en) * | 2019-07-05 | 2020-04-24 | 青岛海信日立空调系统有限公司 | Air duct machine |
| CN111059753A (en) * | 2019-07-05 | 2020-04-24 | 青岛海信日立空调系统有限公司 | Air duct machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |