CN208935030U - Noise-decreasing device and noise abatement blower cabin with the noise-decreasing device - Google Patents
Noise-decreasing device and noise abatement blower cabin with the noise-decreasing device Download PDFInfo
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- CN208935030U CN208935030U CN201820886813.9U CN201820886813U CN208935030U CN 208935030 U CN208935030 U CN 208935030U CN 201820886813 U CN201820886813 U CN 201820886813U CN 208935030 U CN208935030 U CN 208935030U
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Abstract
The utility model provides a kind of noise-decreasing device and the noise abatement blower cabin with the noise-decreasing device.Noise-decreasing device includes the first sound insulation portion and the second sound insulation portion, and first sound insulation portion connects second sound insulation portion, and first sound insulation portion is semi-surrounding structure, and second sound insulation portion seals the one end in first sound insulation portion；The first opening and the second opening, it is described first opening face described in the first sound insulation portion, it is described second opening face described in the second sound insulation portion.Noise abatement blower cabin includes cabin ontology, and the cabin ontology includes inlet and outlet and sound transfer part, and noise-decreasing device is arranged in the cabin ontology, and the noise-decreasing device is installed on the inlet and outlet and between the inlet and outlet and the sound transfer part.Noise-decreasing device provided by the utility model and not only guaranteed that ventilation can reduce the noise in blower cabin again with its noise abatement blower cabin, cost is relatively low, assembly process simply, feasibility it is stronger.
Description
Technical field
The utility model relates to cabin noise reduction technique field, in particular to a kind of noise-decreasing device and with the noise-decreasing device
Noise abatement blower cabin.
Background technique
Higher and higher with requiring in industry for the limit value of ship noise, the noise level limit of ship partial region has dropped
Low 5 decibels, this brings huge challenge to existing extensive style Shipbuilding Mode, and ship noise it is exceeded will directly face fine,
Extension delivery, risk huge fund rectification, even abandoned ship.
In ship, engine-room fan is the main reason for generating noise.The reason of engine-room fan generation noise, can be divided into two
Part, i.e. mechanical noise and air power noise, noise pass through Ship Structure and air borne to ship interior compartment and ship
Upper open-air area will affect the routine work and rest of ship's staff when situation is serious, therefore, control fan noise is that extremely have
It is necessary.
In the prior art, some blowers have been changed to arrangement inside chimney from original open-air area arrangement,
To reduce fan noise influence, but effect is limited.Some blowers install silencer, but the installation of silencer at its inlet and outlet
Need enough installation spaces and expensive.It is arranged two pieces or more in its air-intake window with palisade in cabin where some blowers
Noise reduction version can produce part decrease of noise functions, but in order to guarantee that blower cabin reaches certain ventilation quantity, there are sufficient space use for meeting
Guarantee to divulge information, greatly reduces oise insulation factor in this way.
Utility model content
The technical problems to be solved in the utility model be in order to overcome in the prior art blower cabin can not be effectively reduced
The defect of noise provides a kind of noise-decreasing device and the noise abatement blower cabin with the noise-decreasing device.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of noise-decreasing device comprising have: the first sound insulation portion and the second sound insulation portion, first sound insulation portion connection described the
Two sound insulation portions, first sound insulation portion are semi-surrounding structure, and second sound insulation portion seals the one end in first sound insulation portion；The
One opening and second is open, the first sound insulation portion described in the first opening face, the second sound insulation described in the second opening face
Portion.
By above structure, enable the noise entered from the first opening and the second opening by the first sound insulation portion and second
Sound insulation portion stops, to reduce noise transmitting.
Preferably, first opening is connected with second opening in the noise-decreasing device of the utility model.
Using above-mentioned setting, so that the one end in the first sound insulation portion is with the second sound insulation portion in the case where connecting, the other end
With certain ductility, it can adapt to the structure and layout of different noise sources.
Preferably, setting is flat between first opening and second opening in the noise-decreasing device of the utility model
Weigh component, and the both ends of the equalizing feature are connected in first sound insulation portion.
Using above-mentioned setting, using equalizing feature the center of gravity of noise-decreasing device is balanced.
Preferably, in the noise-decreasing device of the utility model, first sound insulation portion is towards the inside of first opening
It is provided with absorbent treatment.
Using above-mentioned setting, can absorption of noise to a certain extent, reduce the reverberation sound generated due to reflection.
Preferably, in the noise-decreasing device of the utility model, second sound insulation portion is towards the inside of second opening
It is provided with sound insulating layer.
Using above-mentioned setting, sound can be stopped to the external communication in the second sound insulation portion.
A kind of noise abatement blower cabin, including cabin ontology, the cabin ontology include inlet and outlet and sound transfer part, institute
It states and is provided with noise-decreasing device as described above in the ontology of cabin, the noise-decreasing device is installed on the inlet and outlet and described
Between sound transfer part.
By above structure, so that in the horizontal direction can be by with the noise that is generated in vertical direction from inlet and outlet
Noise-decreasing device stops, to reduce the noisiness that sound transfer part is propagated to noise abatement blower cabin exterior, while can guarantee again
The ventilation quantity of inlet and outlet not will receive the influence of noise-decreasing device, can use the first opening and the second opening and is aerated, fills
Divide and meets blower ventilation for cabin room requirement.
Preferably, the sound transfer part includes the first transaudient portion, described in the noise abatement blower cabin of the utility model
First transaudient portion is located at the side of the inlet and outlet, and first sound insulation portion is arranged around the inlet and outlet and is located at described
Between inlet and outlet and the first transaudient portion.
The noise transmission generated from inlet and outlet is stopped using the semi-surrounding structure in the first sound insulation portion using above-mentioned setting
Extremely it is located at the first transaudient portion of the side of inlet and outlet and forms acoustic shadow between the first sound insulation portion and the first transaudient portion, stops
The side of noise is transmitted, and the function of noise reduction is played.
Preferably, in the noise abatement blower cabin of the utility model, the edge of the inlet and outlet and described first transaudient
The edge in portion is connected to form a solid space；The profile in first sound insulation portion at least covers locating for first sound insulation portion
The cross section profile that space and the solid space are crossed to form.
Using above-mentioned setting, enabling the first sound insulation portion to cover the noise largely generated on inlet and outlet may be passed
The path in transaudient portion is cast to, the lateral transmitting of noise caused by inlet and outlet is further reduced.
Preferably, the sound transfer part includes the second transaudient portion, described in the noise abatement blower cabin of the utility model
Inlet and outlet described in second transaudient portion's face, the setting of inlet and outlet described in second sound insulation portion face and is located at the air inlet/outlet
Between mouth and the second transaudient portion.
Using above-mentioned setting, the setting of one end of the semi-surrounding structure in the first sound insulation portion is sealed using the second sound insulation portion, is hindered
It keeps off from the noise transmission that inlet and outlet generates to the second transaudient portion on the opposite positioned at inlet and outlet, and in the second sound insulation portion and the
Acoustic shadow is formed between two transaudient portions, stops the vertical transmitting of noise, plays the function of noise reduction.
Preferably, in the noise abatement blower cabin of the utility model, the edge of the inlet and outlet and described second transaudient
The edge in portion is connected to form a three-dimensional space；The profile in second sound insulation portion at least covers locating for second sound insulation portion
The cross section profile that space and the three-dimensional space are crossed to form.
Using above-mentioned setting, enabling the second sound insulation portion to cover the noise largely generated on inlet and outlet may be passed
The path in the second transaudient portion is cast to, the vertical transmitting of noise caused by inlet and outlet is further reduced.
Preferably, in the noise abatement blower cabin of the utility model, setting sound absorption material on the medial surface of the cabin ontology
Material.
Using above-mentioned setting, the indoor noise grade in blower cabin can reduce, reduce the noise outwardly propagated, into
One step plays the function of noise reduction.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get the utility model respectively compared with
Good example.
The positive effect of the utility model is:
Noise-decreasing device provided by the utility model and noise abatement blower cabin with the noise-decreasing device, pass through noise-decreasing device
First sound insulation portion and the second sound insulation portion come the lateral transmitting and vertical transmitting of the noise for stopping inlet and outlet to generate, reduction noise by
First transaudient portion and the second transaudient outside borne noise in portion, by absorbent treatment reduce due to reflection caused by reverberation sound, by every
Sound layer stops sound to be propagated to cabin exterior, achievees the purpose that effectively to control noise.Compared to the prior art, the utility model
Cost is relatively low, assembly process is simple, feasibility is stronger, under the premise of guaranteeing sufficiently to meet blower ventilation for cabin room requirement, solves
The effect of measuring point noise excessive problem as caused by blower is clearly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the noise-decreasing device of the utility model embodiment 1.
Fig. 2 is the structural schematic diagram of the noise-decreasing device of the utility model embodiment 2.
Fig. 3 is the perspective diagram in the noise abatement blower cabin of the utility model embodiment 3.
Fig. 4 is the inside front schematic view in the noise abatement blower cabin of the utility model embodiment 3.
Fig. 5 is the internal simplified side view in the noise abatement blower cabin of the utility model embodiment 3.
Fig. 6 is the internal simplified top view in the noise abatement blower cabin of the utility model embodiment 3.
Fig. 7 is the sound pressure level value of the outer open-air area of shutter in blower cabin in the prior art.
Fig. 8 is the sound pressure level value of the outer open-air area of noise abatement blower cabin shutter of the utility model embodiment 3.
Description of symbols:
Noise-decreasing device 1
First sound insulation portion 11
Second sound insulation portion 12
First opening 13
Second opening 14
Equalizing feature 15
Noise abatement blower cabin 2
Cabin ontology 21
Inlet and outlet 211
First transaudient portion 212
Second transaudient portion 213
Specific embodiment
A preferred embodiment is named, and completely illustrates the utility model in conjunction with attached drawing to become apparent from.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Embodiment 1
As shown in Figure 1, the embodiments of the present invention 1 disclose a kind of noise-decreasing device 1 comprising have: the first sound insulation portion
11 and the second sound insulation portion 12.
Wherein, the first sound insulation portion 11 connects the second sound insulation portion 12, and the first sound insulation portion 11 is semi-surrounding structure, the second sound insulation portion
12 seal the one end in the first sound insulation portion 11；First opening 13 and the second opening 14, first 13 the first sound insulation of face portions 11 of opening, the
Two 14 the second sound insulation of face portions 12 of opening.
Specifically, in noise-decreasing device 1 disclosed in the present embodiment, the semi-surrounding structure in the first sound insulation portion 11 can be at it
Inside forms a semi-open cavity, and the second sound insulation portion 12 is blocked in the one end in the first sound insulation portion 11, makes this with regard to natural
Only there are two inlet and outlet, i.e., the first opening 13 and the second openings 14 for a semi-open cavity, and no matter sound is from the first opening 13
Into or from second opening 14 enter, can all be stopped by the first sound insulation portion 11 or the second sound insulation portion 12, and first every
Formed after part 11 or the second sound insulation portion 12 " acoustic shadow " of grade in a low voice, i.e., Acoustic Wave Propagation through the first sound insulation portion 11 or second every
Part 12 stops diffraction, sound source can be caused to the increase for the propagation distance a little that quiets down, and the direction of propagation can also change, and cause
Sound attenuating, to play the purpose of noise reduction.
In the noise-decreasing device 1 of the present embodiment, the first opening 13 is connect with the second opening 14.That is, first every
In the case where connecting with the second sound insulation portion 12, the other end has certain ductility for one end of part 11, can adapt to not
The structure and layout of same noise source.For example, the open width of the bottom in the first sound insulation portion 11 can be than sound source
Outer diameter is small, by pulling open and being stuck in the periphery of sound source for two open feet, with the sound for preferably stopping sound source to spread out of
Propagation path.
In the noise-decreasing device 1 of the present embodiment, the inside of the first sound insulation portion 11 towards the first opening 13 is provided with absorbent treatment.
For the first sound insulation portion 11, reflection can be generated after sound wave is stopped, and form reverberation sound.Therefore, in the first sound insulation portion 11
Absorbent treatment is laid in inside, can absorption of noise to a certain extent, reduce the reverberation sound generated due to reflection.The absorbent treatment is by inhaling
Sound material composition, for different Source Spectrums, selected sound-absorbing material be will be different, wherein sound-absorbing material can be selected such as
The film sound absorbing materials such as porous materials or plastic film, canvas, artificial leather such as mineral wool, mineral wool, felt, wood wool acoustic board.
In the noise-decreasing device 1 of the present embodiment, the inside of the second sound insulation portion 12 towards the second opening 14 is provided with sound insulating layer.Sound
Wave mainly enters from the second opening 14, lays sound insulating layer in the inside in the second sound insulation portion 12, sound can be stopped to the second sound insulation
The external communication in portion 12.Wherein, which is made of sound insulating material, sound insulating material can select such as solid slab, plasterboard,
Iron plate, sound-insulating felt, fiberboard etc..
Embodiment 2
As shown in Fig. 2, the embodiments of the present invention 2 disclose a kind of noise-decreasing device 1.The noise-decreasing device 1 of the present embodiment
It is largely identical as the structure of noise-decreasing device 1 disclosed in embodiment 1.
The noise-decreasing device 1 of the present embodiment difference from example 1 is that, between the first opening 13 and the second opening 14
Equalizing feature 15 is set, and the both ends of equalizing feature 15 are connected in the first sound insulation portion 11.
In actual use, the acoustic transmission path between sound source and sound receiving point is according to practical application
It depending on occasion, causes in the noise-decreasing device 1 having, the height in the first sound insulation portion 11 can be made high, and center of gravity also can be very
Height, since the first sound insulation portion 11 is semi-surrounding structure, center of gravity will necessarily deviate center.Therefore, in order to guarantee noise-decreasing device 1
Stablize, between the first opening 13 and the second opening 14, i.e. equalizing feature is arranged in the bottom opening maximum in the first sound insulation portion 11
15, using equalizing feature 15 center of gravity of noise-decreasing device 1 is balanced.
Embodiment 3
As shown in Figure 3 to Figure 4, present embodiment discloses a kind of noise abatement blower cabin 2, including cabin ontology 21, cabin sheets
Body 21 includes inlet and outlet 211 and sound transfer part, is arranged in cabin ontology 21 and is retouched just like embodiment hereof 1 and embodiment 2
The noise-decreasing device 1 stated, noise-decreasing device 1 are installed on inlet and outlet 211 and between inlet and outlet 211 and sound transfer parts.
Specifically, fan noise is one of Main Noise Sources on ship, by wind turbine layout in specified cabin, and is taken effectively
Acoustic treatment, can largely reduce fan noise work on ship and living area radiate.The noise abatement blower of the present embodiment
In cabin 2, a noise-decreasing device 1 is mounted at inlet and outlet 211, so that setting between inlet and outlet 211 and sound transfer part
Set one of barrier.Wherein, in noise abatement blower cabin 2, sound transfer part is mainly the top plate 213 of cabin ontology 21 and for leading to
The shutter 212 of wind, in actual use, top plate 213 and shutter 212 are easy to propagate transmission sound outward, cause on ship
Other positions noise is exceeded.Shutter 212 has the function of air circulation, can guarantee the air inlet/outlet of cabin ontology 21 well
Amount, but the sound insulation effect of shutter 212 is very poor, and the noise of cabin ontology 21 is largely to travel to ship by shutter 212
Upper other positions cause the phenomenon that noise is exceeded；And a big chunk noise can be also transmitted to by the top plate 213 of cabin ontology 21
Other spaces on ship, the phenomenon that equally noise can be caused exceeded.In the present embodiment, the first sound insulation portion 11 is in the form of acoustic screen
It being mounted near inlet and outlet 211, the second sound insulation portion 12 is mounted on the opposite of inlet and outlet 211 in the form of sound insulationg board, and first
Sound insulation portion 11 and the second sound insulation portion 12 are blocked in always between inlet and outlet 211 and sound transfer part, while being guaranteed again from disengaging
The wind that air port 211 is circulated can not only ensure that ventilation quantity, but also reduce noise by the first opening 13 and the second opening 14.For
Steel plate can be selected in consideration economy, the first sound insulation portion 11 and the second sound insulation portion 12.
The noise abatement blower cabin 2 of the present embodiment make from inlet and outlet 211 in the horizontal direction with generated in vertical direction
Noise can be stopped by noise-decreasing device 1, to reduce noise of the sound transfer part to 2 external communication of noise abatement blower cabin
Amount, while can guarantee that the ventilation quantity of inlet and outlet 211 not will receive the influence of noise-decreasing device 1, can use the first opening again
13 and second opening 14 be aerated, sufficiently meet blower ventilation for cabin room requirement.As shown in Figure 7 and Figure 8, compared with the prior art
In blower cabin, the noise reduction effect in the noise abatement blower cabin 2 of the present embodiment is significant, at least can reduce about 8dBA.
In the noise abatement blower cabin 2 of the present embodiment, sound transfer part includes the first transaudient portion and the second transaudient portion, and first
Transaudient portion is located at the side of inlet and outlet 211, and the first sound insulation portion 11 is arranged around inlet and outlet 211 and is located at inlet and outlet 211
And first between transaudient portion.Using the semi-surrounding structure in the first sound insulation portion 11, stop the noise transmission generated from inlet and outlet 211
Extremely it is located at the lateral sound insulation portion of inlet and outlet 211, and forms acoustic shadow between the first sound insulation portion 11 and the first transaudient portion, hinders
The lateral transmitting for keeping off noise, plays the function of noise reduction.
As shown in Figures 3 to 6, in the noise abatement blower cabin 2 of the present embodiment, the edge of inlet and outlet 211 and first is passed
The edge of part is connected to form a solid space；The profile in the first sound insulation portion 11 at least covers sky locating for the first sound insulation portion 11
Between the cross section profile that is crossed to form with solid space, enable the first sound insulation portion 11 to cover the major part on inlet and outlet 211
The noise of generation may propagate to the path in the first transaudient portion, further reduce the side of noise caused by inlet and outlet 211
To transmitting.In fig. 5 and fig., it is assumed that inlet and outlet 211 is point sound source, and the height and width in the first sound insulation portion 11 should be as far as possible
Guarantee the direct sound wave for stopping the transaudient portion of inlet and outlet 211 to the first, i.e. the height in the first sound insulation portion 11 should be greater than in Fig. 5 first every
The height H of part 11, the width in the first sound insulation portion 11 should be greater than the width B in the first sound insulation portion 11 in Fig. 6, as far as possible increase sound source
With the path difference to quiet down between a little.
In the noise abatement blower cabin 2 of the present embodiment, sound transfer part include the second transaudient portion, second transaudient portion's face into
Air outlet 211,12 face inlet and outlet 211 of the second sound insulation portion are arranged and between inlet and outlet 211 and the second transaudient portions.Benefit
The setting of one end of the semi-surrounding structure in the first sound insulation portion 11 is sealed with the second sound insulation portion 12, stops to generate from inlet and outlet 211
Noise transmission to the opposite for being located at inlet and outlet 211 the second transaudient portion, and the second sound insulation portion 12 and the second transaudient portion it
Between form acoustic shadow, stop the vertical transmitting of noise, play the function of noise reduction.
In the noise abatement blower cabin 2 of the present embodiment, the edge of inlet and outlet 211 is connected shape with the edge in the second transaudient portion
At a three-dimensional space；The profile in the second sound insulation portion 12 at least covers space locating for the second sound insulation portion 12 and intersects with three-dimensional space
The cross section profile of formation, enabling the second sound insulation portion 12 to cover the most noise on inlet and outlet 211 may propagate to
The path in the second transaudient portion further reduces the vertical transmitting of noise caused by inlet and outlet 211.
In the noise abatement blower cabin 2 of the present embodiment, sound-absorbing material is set on the medial surface of cabin ontology 21.Although noise abatement
Device 1 has absorbed and has reduced a part of noise, but the indoor noise etc. in order to further reduce blower cabin
Grade, further functions as the function of noise reduction, sound-absorbing material also can be set on the medial surface of cabin ontology 21, so that cabin ontology 21
Noise reduction effect it is more preferable.
By taking certain ship blower cabin as an example, cabin ontology 21 is 3.6m long, wide 3.3m, high 2.8m, and fan noise is as shown in the table.
| Octave frequency/Hz | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
| Acoustic power level/dB (A) | 73.2 | 80.3 | 95.8 | 96.2 | 97.4 | 95.6 | 93.4 | 81.3 |
Application software carries out acoustic analysis to blower cabin, establishes cabin ontology 21 and counts energy model.In unmodified wind
Before machine ship cabin arrangement, it is 90dB (A) that noise figure herein, which is calculated, in the open-air area outside blower cabin exterior, shutter 212,
Sound pressure level value is as shown in Figure 7.Increase vertical sound insulation steel plate and the top of a circle 10mm thickness around the inlet and outlet 211 in blower cabin
Steel plate insulate against sound as the first sound insulation portion 11 and the second sound insulation portion 12, wherein the height and the width in the first sound insulation portion 11 are all larger than in portion
The height and the width of H, B that text is mentioned, inside the first sound insulation portion 11 lay 50mm thickness rock wool, the medial surface of cabin ontology 21 with
50mm thickness rock wool is laid in the inside of the top plate 213 of cabin ontology 21, and the open-air area noise figure outside shutter 212 is calculated
For 74dB (A), 16dB (A) is reduced, sound pressure level value is as shown in Figure 8.It can be seen that the drop of the arrangement in this blower cabin
It makes an uproar significant effect.
Noise-decreasing device provided by the utility model and noise abatement blower cabin with it pass through the first sound insulation of noise-decreasing device
It is transaudient by first to reduce noise come the lateral transmitting and vertical transmitting of the noise for stopping inlet and outlet to generate for portion and the second sound insulation portion
Portion and the second transaudient portion propagate transmission sound outward, and reverberation sound caused by being reduced by absorbent treatment due to reflection is hindered by sound insulating layer
It keeps off sound to propagate to cabin exterior, achievees the purpose that effectively to control noise.Compared to the prior art, the cost of the utility model compared with
Low, assembly process is simple, feasibility is stronger, and under the premise of guaranteeing sufficiently to meet blower ventilation for cabin room requirement, solution is by blower
The effect of caused measuring point noise excessive problem is clearly.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the protection scope of the utility model.
Claims (11)
1. a kind of noise-decreasing device, which is characterized in that it includes:
First sound insulation portion and the second sound insulation portion, first sound insulation portion connect second sound insulation portion, and first sound insulation portion is
Semi-surrounding structure, second sound insulation portion seal the one end in first sound insulation portion；
The first opening and the second opening, the first sound insulation portion described in the first opening face, the described in the second opening face
Two sound insulation portions.
2. noise-decreasing device as described in claim 1, which is characterized in that first opening is connected with second opening.
3. noise-decreasing device as described in claim 1, which is characterized in that be arranged between first opening and second opening
Equalizing feature, the both ends of the equalizing feature are connected in first sound insulation portion.
4. noise-decreasing device as described in claim 1, which is characterized in that first sound insulation portion towards it is described first opening in
Side is provided with absorbent treatment.
5. noise-decreasing device as described in claim 1, which is characterized in that second sound insulation portion towards it is described second opening in
Side is provided with sound insulating layer.
6. a kind of noise abatement blower cabin, including cabin ontology, the cabin ontology includes inlet and outlet and sound transfer part, spy
Sign is:
It is arranged in the cabin ontology just like noise-decreasing device described in any one of claim 1 to 5, the noise-decreasing device is installed on
The inlet and outlet and between the inlet and outlet and the sound transfer part.
7. noise abatement blower as claimed in claim 6 cabin, which is characterized in that the sound transfer part includes the first transaudient portion,
The first transaudient portion is located at the side of the inlet and outlet, and first sound insulation portion is arranged and is located at around the inlet and outlet
Between the inlet and outlet and the first transaudient portion.
8. noise abatement blower as claimed in claim 7 cabin, it is characterised in that:
The edge of the inlet and outlet and the edge in the described first transaudient portion are connected to form a solid space；
The profile in first sound insulation portion at least covers space locating for first sound insulation portion and intersects shape with the solid space
At cross section profile.
9. noise abatement blower as claimed in claim 6 cabin, which is characterized in that the sound transfer part includes the second transaudient portion,
Inlet and outlet described in second transaudient portion's face, the setting of inlet and outlet described in second sound insulation portion face and be located at it is described into
Between air outlet and the second transaudient portion.
10. noise abatement blower as claimed in claim 9 cabin, it is characterised in that:
The edge of the inlet and outlet and the edge in the described second transaudient portion are connected to form a three-dimensional space；
The profile in second sound insulation portion at least covers space locating for second sound insulation portion and intersects shape with the three-dimensional space
At cross section profile.
11. noise abatement blower as claimed in claim 6 cabin, which is characterized in that be arranged on the medial surface of the cabin ontology and inhale
Sound material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820886813.9U CN208935030U (en) | 2018-06-06 | 2018-06-06 | Noise-decreasing device and noise abatement blower cabin with the noise-decreasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820886813.9U CN208935030U (en) | 2018-06-06 | 2018-06-06 | Noise-decreasing device and noise abatement blower cabin with the noise-decreasing device |
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| Publication Number | Publication Date |
|---|---|
| CN208935030U true CN208935030U (en) | 2019-06-04 |
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ID=66715003
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|---|---|---|---|
| CN201820886813.9U Active CN208935030U (en) | 2018-06-06 | 2018-06-06 | Noise-decreasing device and noise abatement blower cabin with the noise-decreasing device |
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| CN (1) | CN208935030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757583A (en) * | 2018-06-06 | 2018-11-06 | 上海外高桥造船有限公司 | Noise-decreasing device and noise abatement wind turbine cabin with the noise-decreasing device |
-
2018
- 2018-06-06 CN CN201820886813.9U patent/CN208935030U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757583A (en) * | 2018-06-06 | 2018-11-06 | 上海外高桥造船有限公司 | Noise-decreasing device and noise abatement wind turbine cabin with the noise-decreasing device |
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