CN104405259A - Streamline ventilating and silencing window - Google Patents
Streamline ventilating and silencing window Download PDFInfo
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- CN104405259A CN104405259A CN201410487106.9A CN201410487106A CN104405259A CN 104405259 A CN104405259 A CN 104405259A CN 201410487106 A CN201410487106 A CN 201410487106A CN 104405259 A CN104405259 A CN 104405259A
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Abstract
The invention relates to a streamline ventilating and silencing window. The streamline ventilating and silencing window consists of an upper side window body (1) and a lower side window body (2), wherein the upper side window body (1) is of a dual-layer hollow inwards-convex structure, the lower side window body (2) is of a single-layer casement structure, an air inlet outer window (3) which can be opened and closed is arranged on the upper side window body (1) and is used as a ventilating duct inlet, a silencing unit (4) is arranged in the upper side window body (1), a vertical air outlet (5) is formed in the connecting surface of the upper side window body (1) and the lower side window body (2) and is used as a ventilating duct outlet, air enters the upper side window body (1) through the air inlet outer window (3), and after being silenced by the silencing unit (4), the air enters indoors from the vertical air outlet (5). Compared with the prior art, the streamline ventilating and silencing window has the advantages that not only can the inlet and outlet resistance of air flow be reduced, but also the noise reduction spectrum of the ventilating and silencing window is widened and the noise reduction amount is improved.
Description
Technical field
The present invention controls and the field of improvement in building external noise, especially relates to a kind of streamlined ventilating noise-elimination window, is applicable to the ventilation of next-door neighbour road both sides building, daylighting and sound insulation.
Background technology
In recent years, urban traffic develops rapidly, and the traffic noise pollution brought thus is also day by day serious.Meanwhile, good room ventilation is the required requirement of daily life.For this reason, ventilating noise-elimination window setting technique becomes the indoor noise reduction measure that noise pollution district building generally adopts.Usually, ventilating noise-elimination window can be divided into mechanical ventilation and natural ventilation two kinds by its ventilation characteristic.The such as patent No. is the mechanical ventilation soundproof window of the double layer glass of 200820171334.5, utilize window frame body both sides as the vent passages of blower fan, although there is sound insulation simultaneously, ventilate, the feature of daylighting, but energy consumption, later period maintenance maintenance costs are higher and easy generation quadratic noise is this type of mechanical ventilation soundproof window later stage institute's problems faced.Therefore the natural ventilation realizing wind drive on sound insulation basis becomes the developing direction of this current technology.Natural ventilation system is relied on to carry out the technology of ventilation, substantially be all allow air-flow by the silencing channel of the special sound absorption material of indoor design or sound absorption construction, make outdoor noise significantly decaying by during silencing channel, but now silencing channel generally all have larger resistance coefficient (pressure loss) to air-flow.
Summary of the invention
Object of the present invention is exactly provide a kind of turnover resistance of low-flow to overcome defect that above-mentioned prior art exists, has widened the noise reduction frequency spectrum of ventilating noise-elimination window, has improved the streamlined ventilating noise-elimination window of noise reduction.
Object of the present invention can be achieved through the following technical solutions:
A kind of streamlined ventilating noise-elimination window, be made up of upside forms and downside forms two parts, described upside forms are male structure in double layer hollow, and described downside forms are single flat open architecture,
Upside forms are provided with air intake exterior window able to turn on or off as ventilation stack import, muffling unit is provided with in the forms of upside, upside forms are provided with vertical air outlet with the joint face of downside forms and export as ventilation stack, air enters in the forms of upside through air intake exterior window, after muffling unit is eliminated the noise, enter into indoor by vertical air outlet.
Described muffling unit is the dark reciprocating vibration energy-dissipation structure in change chamber that perforated plate or microperforated panel composition sound insulation front and rear panel are combined to form with the sound absorbing layer arranged therebetween, the space of structural bending surface institute envelope is formed and becomes deep space chamber, chamber, and cavity depth is 50-100mm.
Described muffling unit is ellipse, fusiformis or streamlined, is provided with several, is embedded in the space formed in upside forms inside.
The aperture of perforate on perforated plate is 1-3mm, and the aperture of perforate on microperforated panel is 0.8-1mm.
Described muffling unit material is acrylic, organic glass or polyurethane transparent material.
The sound absorption unit improving noise reduction is also set in the stile of described upside forms.
Described sound absorption unit is glass wool, polyurethane foam or polyester form.
Compared with prior art, the present invention arranges streamlined muffling unit in the forms of upside, can not only reduce the turnover resistance of air-flow, and has widened the noise reduction frequency spectrum of ventilating noise-elimination window, improves noise reduction.
The present invention realizes the effective attenuation of acoustic energy under the condition of natural ventilation, sound wave is propagated often with air-flow in vent passages, and air velocity size and direction is different, causes air-flow also different to the influence degree of anti-acoustic capability, usual flow velocity is higher, and the impact of air-flow on anti-acoustic capability is larger.
When ventilating noise-elimination window of the present invention air-out from inside to outside, airflow direction is contrary with acoustic propagation direction, and according to vector superposed principle, sound velocity of wave propagation is inhibited; Again because the restriction of window structure reduces actual internal area, induction air flow ratio significantly improves, and causes the attenuation factor in propagation process of sound wave to increase.
When ventilating noise-elimination window of the present invention from outside to inside air intake time, airflow direction is identical with acoustic propagation direction, but it is uneven due to air-flow flowing velocity in the channel, on same cross section, passage central authorities flow velocity is the highest, leave center flow velocity far away lower, be approximately zero near wall place flow velocity.According to refraction principle, sound wave will bend to tube wall, causes sound wave and muffling unit touch opportunity to increase.
In addition, the more important thing is that the muffling unit that the present invention adopts is change chamber deep structure, the gradual change chamber becoming chamber deep structure makes the resonance frequency range of micropunch/perforated plate resistance structure mutually cover deeply, thus has widened the noise reduction frequency range of muffling unit; The curved surface simultaneously becoming chamber deep structure decreases the flow resistance of air in silencing channel, and the present invention can be used as the noise abatement measure of downtown roads next-door neighbour building.Show after tested, in exterior window complete shut-down situation, sound deadening capacity is 33dB; When exterior window is opened, ventilation reaches 67m
3/ h, sound deadening capacity is 28dB, and wherein the noise reduction of centering, low-frequency sound wave is remarkable, and in the band limits of 100-500Hz, noise reduction can reach 18.1 ~ 25.8dB.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is main TV structure schematic diagram of the present invention.
In figure, 1 be upside forms, 2 be downside forms, 3 be air intake exterior window, 4 be muffling unit, 5 for vertical air outlet.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of streamlined ventilating noise-elimination window, its structure as shown in Figure 1-2, is made up of upside forms 1 and downside forms 2 two parts, and wherein upside forms are male structure in double layer hollow, and downside forms 2 are single flat open architecture.Upside forms 1 are provided with air intake exterior window 3 able to turn on or off as ventilation stack import, are provided with muffling unit 4 in upside forms 1, upside forms 1 and the joint face of downside forms 2 are provided with vertical air outlet 5 and export as ventilation stack.
Air enters in the forms 1 of upside through air intake exterior window 3, after muffling unit 4 is eliminated the noise, enters into indoor by vertical air outlet 5.The muffling unit 4 used is the dark reciprocating vibration energy-dissipation structure in change chamber that perforated plate or microperforated panel textural association are formed, can be ellipse, fusiformis or streamlined, the muffling unit 4 used in the present embodiment is the perforated plate of four ellipsoidal structures, is embedded in the space formed in upside forms 1 inside.The material of muffling unit 4 is acrylic, organic glass or polyurethane transparent material.In addition, in order to reach better erasure effect, the sound absorption unit improving noise reduction can also be set in the stile of upside forms 1.
The present invention realizes the effective attenuation of acoustic energy under the condition of natural ventilation, sound wave is propagated often with air-flow in vent passages, and air velocity size and direction is different, causes air-flow also different to the influence degree of anti-acoustic capability, usual flow velocity is higher, and the impact of air-flow on anti-acoustic capability is larger.
When ventilating noise-elimination window of the present invention air-out from inside to outside, airflow direction is contrary with acoustic propagation direction, and according to vector superposed principle, sound velocity of wave propagation is inhibited; Again because the restriction of window structure reduces actual internal area, induction air flow ratio significantly improves, and causes the attenuation factor in propagation process of sound wave to increase.
When ventilating noise-elimination window of the present invention from outside to inside air intake time, airflow direction is identical with acoustic propagation direction, but it is uneven due to air-flow flowing velocity in the channel, on same cross section, passage central authorities flow velocity is the highest, leave center flow velocity far away lower, be approximately zero near wall place flow velocity.According to refraction principle, sound wave will bend to tube wall, causes sound wave and muffling unit touch opportunity to increase.
After tested, insertion loss when closing window reaches 33dB to ventilating noise-elimination window of the present invention; Window ventilate time, ventilation reaches 67m
3/ h, insertion loss reaches 28dB, and noise reduction is remarkable, the visible table 1 of concrete data.
Table 1
Claims (8)
1. a streamlined ventilating noise-elimination window, is made up of upside forms (1) and downside forms (2) two parts, and described upside forms (1) are male structure in double layer hollow,
Described downside forms (2) are single flat open architecture,
It is characterized in that, described upside forms (1) are provided with air intake exterior window (3) able to turn on or off as ventilation stack import, muffling unit (4) is provided with in upside forms (1), upside forms (1) is provided with vertical air outlet (5) with the joint face of downside forms (2) and exports as ventilation stack, air enters in upside forms (1) through air intake exterior window (3), after muffling unit (4) is eliminated the noise, enter into indoor by vertical air outlet (5).
2. the streamlined ventilating noise-elimination window of one according to claim 1, it is characterized in that, the dark reciprocating vibration energy-dissipation structure in change chamber that described muffling unit (4) is combined to form with the sound absorbing layer arranged therebetween for perforated plate or microperforated panel composition sound insulation front and rear panel, the space of structural bending surface institute envelope is formed and becomes deep space chamber, chamber, and cavity depth is 50-100mm.
3. the streamlined ventilating noise-elimination window of one according to claim 2, is characterized in that, described muffling unit (4) is ellipse, fusiformis or streamlined, is provided with several, is embedded in the space formed in upside forms (1) inside.
4. the streamlined ventilating noise-elimination window of one according to claim 2, is characterized in that, the aperture of perforate on described perforated plate is 1-3mm.
5. the streamlined ventilating noise-elimination window of one according to claim 2, is characterized in that, the aperture of perforate on described microperforated panel is 0.8-1mm.
6. the streamlined ventilating noise-elimination window of the one according to any one of claim 1-5, is characterized in that, described muffling unit (4) material is acrylic, organic glass or polyurethane transparent material.
7. the streamlined ventilating noise-elimination window of one according to claim 1, is characterized in that, also arranges the sound absorption unit improving noise reduction in the stile of described upside forms (1).
8. the streamlined ventilating noise-elimination window of one according to claim 7, is characterized in that, described sound absorption unit is glass wool, polyurethane foam or polyester form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487106.9A CN104405259B (en) | 2014-09-22 | 2014-09-22 | A kind of streamlined ventilating noise-elimination window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487106.9A CN104405259B (en) | 2014-09-22 | 2014-09-22 | A kind of streamlined ventilating noise-elimination window |
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| Publication Number | Publication Date |
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| CN104405259A true CN104405259A (en) | 2015-03-11 |
| CN104405259B CN104405259B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410487106.9A Active CN104405259B (en) | 2014-09-22 | 2014-09-22 | A kind of streamlined ventilating noise-elimination window |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569532A (en) * | 2016-02-25 | 2016-05-11 | 江苏远兴环保集团有限公司 | Ventilation sound proof window |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19751959A1 (en) * | 1997-11-24 | 1999-06-02 | Christian Hirschfelder | Acoustic insulation for window of building |
| CN2667125Y (en) * | 2003-12-26 | 2004-12-29 | 苏克堡 | Natural ventilating sound silencing window |
| CN2923957Y (en) * | 2006-04-20 | 2007-07-18 | 朱国樑 | Strong-convection silencing dust-proof window |
| CN103216187A (en) * | 2013-04-06 | 2013-07-24 | 上海伊新环保科技发展有限公司 | Novel solar plate ventilating and lighting sound-proof window |
| CN203796129U (en) * | 2014-04-16 | 2014-08-27 | 上海然贝声学环保工程有限公司 | Ventilation sound-proof window |
-
2014
- 2014-09-22 CN CN201410487106.9A patent/CN104405259B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19751959A1 (en) * | 1997-11-24 | 1999-06-02 | Christian Hirschfelder | Acoustic insulation for window of building |
| CN2667125Y (en) * | 2003-12-26 | 2004-12-29 | 苏克堡 | Natural ventilating sound silencing window |
| CN2923957Y (en) * | 2006-04-20 | 2007-07-18 | 朱国樑 | Strong-convection silencing dust-proof window |
| CN103216187A (en) * | 2013-04-06 | 2013-07-24 | 上海伊新环保科技发展有限公司 | Novel solar plate ventilating and lighting sound-proof window |
| CN203796129U (en) * | 2014-04-16 | 2014-08-27 | 上海然贝声学环保工程有限公司 | Ventilation sound-proof window |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569532A (en) * | 2016-02-25 | 2016-05-11 | 江苏远兴环保集团有限公司 | Ventilation sound proof window |
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| Publication number | Publication date |
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| CN104405259B (en) | 2016-07-06 |
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