CN203742713U - Double-layer ventilating and noise insulating cover - Google Patents
Double-layer ventilating and noise insulating cover Download PDFInfo
- Publication number
- CN203742713U CN203742713U CN201420196806.8U CN201420196806U CN203742713U CN 203742713 U CN203742713 U CN 203742713U CN 201420196806 U CN201420196806 U CN 201420196806U CN 203742713 U CN203742713 U CN 203742713U
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a double-layer ventilating and noise insulating cover and solves the problem that a noise insulating cover cannot meet air incoming requirements and is poor in noise eliminating effect and high in reverberant sound in the prior art. The double-layer ventilating and noise insulating cover comprises an inner cover arranged outside a sound source device and formed by a first noise insulating wall, an air incoming fan and an internally-opening noise insulating door are arranged at the bottom of the inner cover, an air exhausting fan is arranged at the top of the inner cover, an outer cover formed by a second noise insulating wall is arranged outside the inner cover, a gap is formed between the inner cover and the outer cover, an air incoming noise eliminator and an externally-opening noise insulating door are arranged at the bottom of the outer cover, an air exhausting noise eliminator is arranged at the top of the outer cover, the air exhausting fan and the air exhausting noise eliminator are connected through a pipeline, an impedance-type noise eliminator is arranged on the pipeline, and a noise absorbing plate is arranged on the inner wall of the inner cover. Certain space exists between the inner cover and the outer cover, and sound can be attenuated when transmitting in the space, so that noise value is lowered, and noise insulativity of the whole noise eliminating cover is improved.
Description
Technical field
The utility model relates to a kind of double-layer ventilation acoustic hood.
Background technique
Along with social development, the raising of people's living standard, serious increasingly gradually in modern development Chinese Home noise pollution, people's environmental consciousness strengthens gradually.Machine times brings a lot of facilities, also brings a lot of pollutions simultaneously, and wherein noise pollution becomes that society four is large one of to be polluted, and solving noise pollution need to be from source, and cost is lower comparatively speaking also can play good noise reduction.But acoustic hood cannot meet air intake requirement, thereby cause equipment normally not move, and workman's expiratory dyspnea of working therein; In addition, in acoustic hood, reverberation sound is large, affects noise reduction.
Model utility content
The purpose of this utility model is to provide a kind of double-layer ventilation acoustic hood, and the acoustic hood that solves prior art cannot meet air intake requirement, and soundproof effect is not good and the large problem of reverberation sound.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Double-layer ventilation acoustic hood, comprises and is arranged at the inner cover that sonic source device is outer and be made up of the first sound-proof wall; Described Inner cover bottom is provided with ventilating fan and Nei Kai soundproof door, and top is provided with air exhauster; The outside outer cover that has gap and formed by the second sound-proof wall between Inner cover that is also provided with of described Inner cover; The bottom of described outer cover is provided with intake silencer and external-open soundproof door, and top is provided with exhaust silencer; Between described air exhauster and exhaust silencer, be connected by pipeline, and be provided with impedance muffler on this pipeline; On described Inner cover inwall, be also provided with acoustic board; In addition, the first sound-proof wall is three-decker, and is made up of perforated acoustic board, sound absorption cotton, sound insulationg board successively from the inside to the outside.The second sound-proof wall is for to be made by sound insulationg board.
Further, described impedance muffler comprises housing, is arranged at respectively suction port and the relief opening of housing both sides, is arranged in housing and enclosure interior is divided into two-part perforated plate; In described housing, be provided with the air inlet being connected with suction port pipeline with holes, the exhaust pipeline with holes being connected with relief opening; In described housing, be also provided with the noise elimination guide plate between perforated plate and exhaust pipeline with holes, in addition, on the inwall of described housing, be also provided with the porous sound absorption plate between perforated plate and relief opening.
Again further, described noise elimination guide plate is multi-layer structure, is made up of the first perforated plate being connected successively, the first glass-fiber-fabric, glass wool, the second glass-fiber-fabric, the second perforated plate.
Preferred as one, described exhaust silencer comprises noise elimination shell, and is arranged at the detachable anechoic sheet in noise elimination shell.Be set to detachably by anechoic sheet, the dust in easy cleaning exhaust silencer, stops up the hole on anechoic sheet with dust protection, affects soundproof effect.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is provided with Inner cover and outer cover, and noise insulation factor is large; In addition, adopt ventilating fan and air exhauster, make to enter air draft in the utility model and reach equipment and staff's work requirements, reach again the object of noise reduction simultaneously, and operator can carry out work for a long time therein.
(2) the utility model utilizes the principle that hot blast is propagated upward, and when producing smog in the utility model, can discharge by the pipeline of complaining to the higher authorities about an injustice and request fair settlement, and makes the radiating condition in acoustic hood better, does not affect its interior equipment and staff's normal work.
(3) between Inner cover of the present utility model and outer cover, have certain space, sound is propagated therein and can be decayed, thereby reduces noise figure, has increased the noise insulation factor of whole acoustic hood.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic cross-section of A-A in Fig. 1.
Fig. 3 is the structural representation of the utility model middle impedance formula silencing apparatus.
Fig. 4 is the structural representation of the first sound-proof wall in the utility model.
Fig. 5 is the structural representation of porous sound absorption plate in the utility model.
Wherein, the component name that in accompanying drawing, mark is corresponding is called: 1-the first sound-proof wall, 2-ventilating fan, in 3-, open soundproof door, 4-air exhauster, 5-the second sound-proof wall, 6-the second perforated plate, 7-intake silencer, 8-external-open soundproof door, 9-exhaust silencer, 10-impedance muffler, 11-acoustic board, 12-perforated acoustic board, 13-absorbs sound cotton, 14-sound insulationg board, 15-housing, 16-suction port, 17-relief opening, 18-perforated plate, 19-air inlet pipeline with holes, 20-exhaust pipeline with holes, 21-noise elimination guide plate, 22-porous sound absorption plate, 23-the first perforated plate, 24-the first glass-fiber-fabric, 25-glass wool, 26-the second glass-fiber-fabric.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and mode of execution of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1, 2, double-layer ventilation acoustic hood, comprises and is arranged at the inner cover that sonic source device is outer and be made up of the first sound-proof wall 1; Described Inner cover bottom is provided with ventilating fan 2 and Nei Kai soundproof door 3, and top is provided with air exhauster 4; The outside outer cover that has gap and formed by the second sound-proof wall 5 between Inner cover that is also provided with of described Inner cover; The bottom of described outer cover is provided with intake silencer 7 and external-open soundproof door 8, and top is provided with exhaust silencer 9; Between described air exhauster and exhaust silencer, be connected by pipeline, and be provided with impedance muffler 10 on this pipeline; On described Inner cover inwall, be also provided with acoustic board 11; As shown in Figure 4, the first sound-proof wall is three-decker, and is made up of perforated acoustic board 12, sound absorption cotton 13, sound insulationg board 14 successively from the inside to the outside; And the second sound insulationg board is only made up of sound insulationg board.In actual use, ventilating fan ventilates in Inner cover, and by air exhauster, the air in Inner cover is outwards extracted, and makes in the utility model to meet air intake demand, thereby is convenient to the normal operation of staff's normal work and equipment in cover body.In addition, because the utility model adopts double casing, thereby improved defening effect.
As shown in Figure 3, described impedance muffler comprises housing 15, is arranged at respectively suction port 16 and the relief opening 17 of housing both sides, is arranged in housing and enclosure interior is divided into two-part perforated plate 18; In described housing, be provided with the air inlet being connected with suction port pipeline 19 with holes, the exhaust pipeline 20 with holes being connected with relief opening; In described housing, be also provided with the noise elimination guide plate 21 between perforated plate and exhaust pipeline with holes, in addition, on the inwall of described housing, be also provided with the porous sound absorption plate 22 between perforated plate and relief opening.In actual use, due to air inlet pipeline with holes and a resonator system of shell formation, near resonant frequency, acoustic impedance is very low, in the time that sound wave arrives herein along air inlet pipe transmmision with holes, because impedance mismatch makes most of acoustic energy reflect back to Sounnd source direction, some acoustic energy is absorbed because the frictional damping effect of resonator system is converted into heat energy, reaches the object of noise elimination.In the time that air-flow and sound continue to propagate forward, encounter noise elimination guide plate and porous sound absorption plate, noise is further reduced.When air-flow moves on, run into exhaust pipeline with holes, cross section changes, and makes sound wave that reflection occur herein and decays, thereby further pneumatic noise value being reduced.In addition, porous sound absorption plate is double-layer structure, and one deck close with housing is glass wool, and is stainless steel orifice plate away from a side of housing.
As shown in Figure 5, preferred as one, described noise elimination guide plate is multi-layer structure, is made up of the first perforated plate 23 being connected successively, the first glass-fiber-fabric 24, glass wool 25, the second glass-fiber-fabric 26, the second perforated plate 6.Due to the multi-layer structure of noise elimination guide plate, can effectively ensure the effect of sound absorption.
In order better to realize the utility model, acoustic board also can be set on the inwall of described outer cover, thereby improve defening effect of the present utility model.
In order to prevent that when the ventilating noise-elimination, heat causes damage to the utility model, so be equipped with high-temperature coating on the surface of housing, air inlet pipeline with holes, the pipeline with holes of giving vent to anger.It is mainly because sonic source device can attach heat in the time sending noise, in order to extend working life of the present utility model, so on corresponding parts, high-temperature coating is set, thus effectively peventing member is impaired, extend the life-span of the present utility model, and reduce maintenance cost.Certainly can, according to actual conditions, also can high-temperature coating be set on the surface of other parts, such as: acoustic board.
According to above-described embodiment, just can realize well the utility model.What deserves to be explained is; under prerequisite based on said structure design; for solving same technical problem; even if some that make on the utility model are without substantial change or polishing; the essence of the technological scheme adopting is still the same with the utility model, therefore it also should be in protection domain of the present utility model.
Claims (3)
1. double-layer ventilation acoustic hood, is characterized in that, comprises and is arranged at the inner cover that sonic source device is outer and be made up of the first sound-proof wall (1); Described Inner cover bottom be provided with ventilating fan (2) and in open soundproof door (3), top is provided with air exhauster (4); Described Inner cover outside is also provided with the outer cover that has gap and be made up of the second sound-proof wall (5) between Inner cover; The bottom of described outer cover is provided with intake silencer (7) and external-open soundproof door (8), and top is provided with exhaust silencer (9); Between described air exhauster and exhaust silencer, be connected by pipeline, and on this pipeline, be provided with impedance muffler (10); On described Inner cover inwall, be also provided with acoustic board (11); In addition, the first sound-proof wall is three-decker, and is made up of perforated acoustic board (12), sound absorption cotton (13), sound insulationg board (14) successively from the inside to the outside.
2. double-layer ventilation acoustic hood according to claim 1, it is characterized in that, described impedance muffler comprises housing (15), is arranged at respectively suction port (16) and the relief opening (17) of housing both sides, is arranged in housing and enclosure interior is divided into two-part perforated plate (18); In described housing, be provided with the air inlet being connected with suction port pipeline with holes (19), the exhaust pipeline with holes (20) being connected with relief opening; In described housing, be also provided with the noise elimination guide plate (21) between perforated plate and exhaust pipeline with holes, in addition, on the inwall of described housing, be also provided with the porous sound absorption plate (22) between perforated plate and relief opening.
3. double-layer ventilation acoustic hood according to claim 2, it is characterized in that, described noise elimination guide plate is multi-layer structure, is made up of the first perforated plate (23) being connected successively, the first glass-fiber-fabric (24), glass wool (25), the second glass-fiber-fabric (26), the second perforated plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196806.8U CN203742713U (en) | 2014-04-22 | 2014-04-22 | Double-layer ventilating and noise insulating cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196806.8U CN203742713U (en) | 2014-04-22 | 2014-04-22 | Double-layer ventilating and noise insulating cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742713U true CN203742713U (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420196806.8U Expired - Fee Related CN203742713U (en) | 2014-04-22 | 2014-04-22 | Double-layer ventilating and noise insulating cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742713U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452491A (en) * | 2016-05-31 | 2017-12-08 | 全球能源互联网研究院 | A kind of reactor noise reduction system |
| CN108109810A (en) * | 2017-11-29 | 2018-06-01 | 无锡澳蓝特环保科技有限公司 | Compound inlet box |
| CN108335882A (en) * | 2017-11-29 | 2018-07-27 | 无锡澳蓝特环保科技有限公司 | Substation's exhaust outlet static pressure mechanism |
| CN109386469A (en) * | 2017-08-11 | 2019-02-26 | 苏州旺特福机械设备有限公司 | Sound attenuator is used in a kind of test of pump noise |
| CN111102159A (en) * | 2020-01-16 | 2020-05-05 | 吴光明 | Sound absorption and insulation device of air compressor |
| CN112071293A (en) * | 2019-05-24 | 2020-12-11 | 无锡小天鹅电器有限公司 | Sound insulation assembly and clothes treatment device |
| CN113852240A (en) * | 2021-08-24 | 2021-12-28 | 江苏英思达科技有限公司 | Motor shaft end sound insulation cover with high sound absorption capacity |
-
2014
- 2014-04-22 CN CN201420196806.8U patent/CN203742713U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452491A (en) * | 2016-05-31 | 2017-12-08 | 全球能源互联网研究院 | A kind of reactor noise reduction system |
| CN107452491B (en) * | 2016-05-31 | 2024-04-16 | 全球能源互联网研究院 | Noise reduction system for reactor |
| CN109386469A (en) * | 2017-08-11 | 2019-02-26 | 苏州旺特福机械设备有限公司 | Sound attenuator is used in a kind of test of pump noise |
| CN108109810A (en) * | 2017-11-29 | 2018-06-01 | 无锡澳蓝特环保科技有限公司 | Compound inlet box |
| CN108335882A (en) * | 2017-11-29 | 2018-07-27 | 无锡澳蓝特环保科技有限公司 | Substation's exhaust outlet static pressure mechanism |
| CN108109810B (en) * | 2017-11-29 | 2024-04-16 | 无锡澳蓝特环保科技有限公司 | Composite air inlet box |
| CN112071293A (en) * | 2019-05-24 | 2020-12-11 | 无锡小天鹅电器有限公司 | Sound insulation assembly and clothes treatment device |
| CN111102159A (en) * | 2020-01-16 | 2020-05-05 | 吴光明 | Sound absorption and insulation device of air compressor |
| CN113852240A (en) * | 2021-08-24 | 2021-12-28 | 江苏英思达科技有限公司 | Motor shaft end sound insulation cover with high sound absorption capacity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 |