CN101372841B - Multifunctional noise-abatement equipment for rooms - Google Patents
Multifunctional noise-abatement equipment for rooms Download PDFInfo
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- CN101372841B CN101372841B CN2008101433298A CN200810143329A CN101372841B CN 101372841 B CN101372841 B CN 101372841B CN 2008101433298 A CN2008101433298 A CN 2008101433298A CN 200810143329 A CN200810143329 A CN 200810143329A CN 101372841 B CN101372841 B CN 101372841B
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- abatement equipment
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Abstract
The invention discloses a multifunctional muffler device for rooms, which is characterized in that the device comprises a slablike case composed of a bracket and muffling material covered on the bracket, the case is internally provided with a longitudinal partition board and a transverse partition board, the longitudinal partition board divides the interior space of the case into a front and a rear passage mutually communicated, the transverse partition board delaminates the front and the rear passage, the front and rear walls of the case are respectively provided with an air inlet and an air outlet in the form of strips, the air inlet and the air outlet are respectively communicated with the front and the rear passage of the case. As the multifunctional muffler device of the invention adopts the muffling material and ventilation structure, the device can not only have the effects of noise insulation and noise elimination but also have the effect of natural ventilation when the device is installed on a window and other glass windows are closed, thereby solving the problem of no meeting noise insulation, noise elimination and natural ventilation in the prior art simultaneously.
Description
Technical field
The invention belongs to the noise elimination noise reduction device, be specifically related to a kind of multifunctional noise-abatement equipment that is used for the room.
Background technology
In modern city and road (highway and railway) both sides noise become today of public hazards already, raising along with people's living standard, people also have higher requirement to indoor live and work environment, and the problem of wherein sound insulation, noise elimination, noise reduction more and more comes into one's own.Aspect room sound insulation, noise elimination, mainly be sound insulation, the noise elimination of window.At present, carry out sound insulation,, also window can be made laminated glass in order further to strengthen soundproof effect but the measure that the window sound insulation is taked is a characteristic of utilizing window glass itself to have reflective sound wave.Employing is a pair of contradiction with sound insulation function and its ventilation function of window, promptly wants sound insulation and just must sacrifice ventilation, and vice versa.Shutter also is used to carry out sound insulation and natural ventilation, still, can not eliminate the noise.In addition, also to have in order eliminating the noise and felt to be sewed up and to construct out cavity or pleated one-tenth wedge shape,, be used for natural ventilation window for noise elimination (referring to Chinese patent 200720008049.7,200620023630.1,200420015779.6) to strengthen its permeability.The thickness of felt is thick more, and extinction coefficient is big more, but its permeability is just poor more.Therefore, develop and a kind ofly can satisfy sound insulation, noise elimination, the room multifunctional noise-abatement equipment that can satisfy natural ventilation has again become current important topic.
Summary of the invention
The object of the present invention is to provide a kind of multifunctional noise-abatement equipment that is used for the room, this device has sound insulation, noise elimination and natural ventilation function simultaneously.
The technical scheme that realizes the object of the invention is:
The multifunctional noise-abatement equipment that is used for the room, comprise a flat casing, casing is made of support and topped deadener on support, be provided with longitudinal baffle and lateral partitions in the casing, longitudinal baffle makes the space in the casing be divided into two cavities that front and back are interconnected, lateral partitions makes described former and later two cavities isolate layerings, and front and rear wall has strip air intake and air outlet on casing, and air intake and air outlet communicate with forward and backward cavity in the casing respectively.
Further technical scheme is:
Described air intake and air outlet are located at and gas are entered be divided into behind the casing two path differences of road direction both sides when forward and backward cavity flows to air outlet to equal the noise waves wavelength X that will eliminate the noise
Position doubly, k is an odd number;
Described casing one side is shaped as the outwards outstanding wedge in middle part;
Air intake and air outlet on the described casing are provided with gauze;
Can glue multiple deadener on the described longitudinal baffle;
Described deadener adopts plants batt material, and the one side of hairiness is in the inside of casing.
Multifunctional noise-abatement equipment of the present invention can be installed in the part position of window, and other parts still adopt glass window.When noise waves passes to the multifunctional noise-abatement equipment tank surface, can form, thereby it can sound insulation than strong reflection.Strip air intake on the casing is used for air intake, it is except can natural ventilation, can also eliminate the noise, because cavity before and after longitudinal baffle is separated into the cavity in the casing, lateral partitions is isolated layering to guarantee that wind can lateral flow in cavity with the front and back cavity, prevents that channelling influences frequency of noise elimination up and down; After wind enters in the casing by air intake, to turn the back cavity from both sides along preceding cavity, enter in the room from air outlet again, after noise enters casing from air intake with the wind, in the process distance of forward and backward cavity, deadener will absorb and attenuate acoustic noise wave energy (noise elimination), plant the noise elimination better effects if of batt material; Equal the noise waves wavelength X that to eliminate the noise owing to set the path difference of two strands of air-flows that form in the casing
Doubly (k is an odd number, and k is set at 1 in order to economize on resources), this makes two strands of entrained noise waves of air-flow mutually offset (noises elimination) when air outlet converges to fall, further improved the effect of noise elimination; Casing one side shape adopts the outwards outstanding wedge in middle part to help more eliminating the noise.Gauze topped on the inlet and outlet can prevent mosquitos and flies.
Multifunctional noise-abatement equipment of the present invention is owing to adopt deadener and ventilating structure, be installed on the window when other glass window cuts out, both can play the effect of sound insulation, noise elimination, also can play simultaneously the effect of natural ventilation, solve the problem that can not satisfy sound insulation, noise elimination and natural ventilation simultaneously that prior art exists.
The invention will be further described below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that A-A of the present invention is to sectional drawing.
Fig. 3 is that B-B of the present invention is to sectional drawing.
Fig. 4 is a different structure schematic diagram of the present invention.
Fig. 5 is an another kind of structural representation of the present invention.
Fig. 6, Fig. 7 are respectively the schematic diagrames of different application of the present invention.
The specific embodiment
The multifunctional noise-abatement equipment that is used for the room as shown in Figure 1 to Figure 3, comprise a flat rectangular box 1, casing 1 comprises support 5 and topped deadener 2 on support 5, deadener 2 can adopt plants batt material, comprise artificial fiber, animal hair, string etc., the one side of hairiness is in the inside of casing 1, the centre of casing 1 is provided with a longitudinal baffle 6a, this dividing plate 6a makes the space in the casing be divided into two cavities 8 that front and back are interconnected, 9, also be provided with some lateral partitions 6b, make former and later two cavities isolate layering, on the front and rear wall of casing 1, have strip air intake 7 and air outlet 3, air intake 7 and air outlet 3 respectively with casing in before, back cavity 8,9 communicate, air intake 7 and air outlet 3 be located at gas is entered be divided into behind the casing two road direction both sides through before, back cavity 8,9 path differences when flowing to air outlet 3 equal the noise waves wavelength X that will eliminate the noise
Position doubly, k is an odd number, air intake 7 and air outlet 3 are provided with gauze 4a, 4b.
Casing of the present invention also can adopt the box support 5 of board making, pastes deadener 2 in support 5, referring to Fig. 4.
Another kind of structure of the present invention as shown in Figure 5, casing right side 10 be shaped as the outwards outstanding wedge in middle part, this shape helps eliminating the noise more.
Learn from physics: THE VELOCITY OF SOUND IN AIR V=331 meter per second, the acoustic vibration frequency spectrum of people's ear sensitivity is 20Hz to 20KHz, their wavelength X is 16.5 meters to 0.0165 meter.The λ of low frequency 500Hz=0.662 meter, the high-end noise on human body harm of the noise ratio frequency spectrum of this frequency is bigger.
Show from the interference experiment of sound wave: two propagated sound channels about same sound source was branched off into, and converged in same outlet, and the sound that the exit is converged when the path difference on both sides equals the even-multiple of half wavelength λ strengthens; Sound repeal by implication (noise elimination) when for the odd-multiple of half wavelength λ.For saving resource, the frequency spectrum low side of noise elimination is set at 500Hz,
Rice; From Fig. 3 as seen, the middle part that is positioned at center line the right makes L equal 0.331 meter than the wide L in the left side, and is same, and the right L correspondingly extends to the high-end expansion of frequency spectrum less than 0.331 meter frequency of noise elimination, thereby has strengthened noise elimination function greatly, has widened the width of noise elimination frequency band.The present invention designs according to interference experiment principle on the physics.
Concrete size of the present invention can be according to the window size design, the thick about 18mm of casing for example, long 1200mm, wide 1000mm, the wide 30mm of inlet and outlet bar is applicable to that the window opening is long 1000mm, the window decorations of wide 920～950mm, or be made into natural ventilation sound insulation, noise elimination curtain, natural ventilation sound insulation, eliminate the noise that it is honest and clean to hang, perhaps be used for the broadcasting station, noise pollution is administered material etc.
Natural ventilation sound insulation noise elimination curtain is fixed casing 1 of the present invention as shown in Figure 6 on curtain 11, with casing 1 window opening 12 is sealed.
Natural ventilation sound insulation noise elimination is hung as shown in Figure 7 honest and clean, fixes casing 1 of the present invention on extension honest and clean 13, with casing 1 window opening 12 is sealed.
Claims (5)
1. multifunctional noise-abatement equipment that is used for the room, comprise a flat casing, it is characterized in that casing is made of support and the deadener that covers on the support, be provided with longitudinal baffle and lateral partitions in the casing, longitudinal baffle makes the space in the casing be divided into two cavities that front and back are interconnected, lateral partitions makes described former and later two cavities isolate layerings, and front and rear wall has strip air intake and air outlet on casing, and air intake and air outlet communicate with forward and backward cavity in the casing respectively; Described air intake and air outlet are located at and gas are entered be divided into behind the casing two path differences of road direction both sides when forward and backward cavity flows to air outlet to equal the noise waves wavelength X that will eliminate the noise
Position doubly, k is an odd number.
2. the multifunctional noise-abatement equipment that is used for the room according to claim 1 is characterized in that described casing one side is shaped as the outwards outstanding wedge in middle part.
3. the multifunctional noise-abatement equipment that is used for the room according to claim 2 is characterized in that air intake and the air outlet on the described casing is provided with gauze.
4. the multifunctional noise-abatement equipment that is used for the room according to claim 3 is characterized in that being stained with deadener on the described longitudinal baffle.
5. the multifunctional noise-abatement equipment that is used for the room according to claim 4 is characterized in that described deadener adopts and plants batt material that the one side of hairiness is in the inside of casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101433298A CN101372841B (en) | 2008-10-15 | 2008-10-15 | Multifunctional noise-abatement equipment for rooms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101433298A CN101372841B (en) | 2008-10-15 | 2008-10-15 | Multifunctional noise-abatement equipment for rooms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101372841A CN101372841A (en) | 2009-02-25 |
| CN101372841B true CN101372841B (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101433298A Expired - Fee Related CN101372841B (en) | 2008-10-15 | 2008-10-15 | Multifunctional noise-abatement equipment for rooms |
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| Country | Link |
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| CN (1) | CN101372841B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042061A (en) * | 1975-07-12 | 1977-08-16 | Showa Koji K. K. | Cell-box-type noise barrier having large magnitude of transmission loss and noise insulating method |
| CN2328723Y (en) * | 1998-02-21 | 1999-07-14 | 王毅民 | Wall type ventilation silencer |
| CN2466759Y (en) * | 2001-02-22 | 2001-12-19 | 陈鸿烈 | Silencing board |
| CN200976264Y (en) * | 2006-11-09 | 2007-11-14 | 北京绿创环保集团北京绿创声学工程股份有限公司 | Impedance composite noise-abatement equipment |
| CN201040885Y (en) * | 2007-04-29 | 2008-03-26 | 西安工程大学 | Building sound absorption construction |
-
2008
- 2008-10-15 CN CN2008101433298A patent/CN101372841B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042061A (en) * | 1975-07-12 | 1977-08-16 | Showa Koji K. K. | Cell-box-type noise barrier having large magnitude of transmission loss and noise insulating method |
| CN2328723Y (en) * | 1998-02-21 | 1999-07-14 | 王毅民 | Wall type ventilation silencer |
| CN2466759Y (en) * | 2001-02-22 | 2001-12-19 | 陈鸿烈 | Silencing board |
| CN200976264Y (en) * | 2006-11-09 | 2007-11-14 | 北京绿创环保集团北京绿创声学工程股份有限公司 | Impedance composite noise-abatement equipment |
| CN201040885Y (en) * | 2007-04-29 | 2008-03-26 | 西安工程大学 | Building sound absorption construction |
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| Publication number | Publication date |
|---|---|
| CN101372841A (en) | 2009-02-25 |
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