CN203719088U - Static pressure noise reduction box - Google Patents
Static pressure noise reduction box Download PDFInfo
- Publication number
- CN203719088U CN203719088U CN201420016443.5U CN201420016443U CN203719088U CN 203719088 U CN203719088 U CN 203719088U CN 201420016443 U CN201420016443 U CN 201420016443U CN 203719088 U CN203719088 U CN 203719088U
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- China
- Prior art keywords
- static pressure
- flow deflector
- row
- utility
- model
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- 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.)
- Expired - Lifetime
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- 230000003068 static effect Effects 0.000 title claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- CYJRNFFLTBEQSQ-UHFFFAOYSA-N 8-(3-methyl-1-benzothiophen-5-yl)-N-(4-methylsulfonylpyridin-3-yl)quinoxalin-6-amine Chemical compound CS(=O)(=O)C1=C(C=NC=C1)NC=1C=C2N=CC=NC2=C(C=1)C=1C=CC2=C(C(=CS2)C)C=1 CYJRNFFLTBEQSQ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Duct Arrangements (AREA)
Abstract
The utility model provides a static pressure noise reduction box which comprises a box body. The static pressure noise reduction box is characterized in that four corners of the box body are circular arc flow guide corners, and a plurality of rows of shuttle-shaped flow deflectors are further arranged in the box body. By the aid of the static pressure noise reduction box, airflow is smoother and pressure loss is lower while noise can be reduced.
Description
Technical field
The utility model relates to low frequency noise elimination technique field, relates in particular to a kind of static pressure Sound Attenuator.
Background technology
Plenum chamber is central air-conditioning for a pipe air intake in, blowing system, utilizes the hinge equipment of static pressure multitube air-supply, and air-flow, in fan action is pushed down into static pressure casing, then is pressed into multitube outlet from plenum chamber, blows to all directions.The many interfaces six of box-type that the plenum chamber using is now made for the single thin layer steel plate casing of facing the wall and meditating, because blower fan is in the time that air-supply moves, there is the noise of higher-strength, during by plenum chamber, amplified by resonance, then along air supply duct conduction, form air conditioner noises impact, indoor environment is produced to negative effect, fairly obvious to the near-end air outlet influence of noise near blower fan especially.
In view of this, how to design a kind of static pressure Sound Attenuator, to make in reducing noise, air-flow is more smooth and easy, the pressure loss is little, is the problem that insider needs solution badly.
Utility model content
In prior art, in static pressure Sound Attenuator, noise is larger, and the defect such as air-flow has some setbacks, the pressure loss is large, and the utility model provides a kind of static pressure Sound Attenuator.
According to the utility model, a kind of static pressure Sound Attenuator is provided, there is casing, wherein, four angles of described casing are set to circular arc channelization angle, are also provided with some row's shuttle type flow deflectors in described casing.
Preferably, described flow deflector is three rows.
Preferably, described first row flow deflector is two, and described second row flow deflector is two, and described the 3rd row's flow deflector is one.
Preferably, described first row flow deflector is corresponding to the position between described second row flow deflector, and described the 3rd row's flow deflector is corresponding to the position between described first row flow deflector.
Preferably, the number of degrees of described channelization angle are 60～150 °.
Preferably, the number of degrees of described channelization angle are 90～120 °.
Preferably, the number of degrees of described channelization angle are 110 °.
The utility model has the advantages that: the casing channelization angle of static pressure Sound Attenuator is arranged to circular arc, can reduces air-flow dynamic resistance, make air-flow more smooth and easy, avoided square can produce the problem of air stream turbulence.In addition, shuttle type flow deflector is set in casing, the positive face width of flow deflector, afterbody are narrow, do not produce eddy current when air-flow is passed through, and can in reducing noise, make that air-flow is more smooth and easy, the pressure loss is little.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 shows the front view according to static pressure Sound Attenuator of the present utility model.
Fig. 2 shows in Fig. 1 static pressure Sound Attenuator along the generalized section of AA line.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 shows the front view according to static pressure Sound Attenuator of the present utility model.Fig. 2 shows in Fig. 1 static pressure Sound Attenuator along the generalized section of AA line.In conjunction with Fig. 1, with reference to Fig. 2, static pressure Sound Attenuator 1 has casing 100, and four angle α of casing 100 are circular arc channelization angle, and the number of degrees of channelization angle α can be set to 60～150 °, concrete, can be set to 90～120 °, for example 110 °.Between upper plate in casing 100 and lower shoe, be fixed with some row's flow deflectors 110, flow deflector 110 is shuttle type.In the present embodiment, flow deflector 110 has three rows, wherein, first row flow deflector 110 is set to two, second row flow deflector 110 is set to two, and first row flow deflector 110 is corresponding to the position between second row flow deflector 110, and the 3rd row's flow deflector 110 is set to one, and the 3rd row's flow deflector 110 is corresponding to the position between first row flow deflector 110.The outer surface of flow deflector 110 is made up of acoustic board, acoustical cotton, sound absorption cloth, described acoustical cotton outer wrapping sound absorption cloth, and described sound absorption cloth outer wrapping abatvoix, described abatvoix surface is provided with multiple through holes.
The utility model has the advantages that: the casing channelization angle of static pressure Sound Attenuator is arranged to circular arc, can reduces air-flow dynamic resistance, make air-flow more smooth and easy, avoided square can produce the problem of air stream turbulence.In addition, shuttle type flow deflector is set in casing, the positive face width of flow deflector, afterbody are narrow, do not produce eddy current when air-flow is passed through, and can in reducing noise, make that air-flow is more smooth and easy, the pressure loss is little.
More than show and described general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a static pressure Sound Attenuator, has casing, it is characterized in that, four angles of described casing are set to circular arc channelization angle, is also provided with some row's shuttle type flow deflectors in described casing.
2. static pressure Sound Attenuator as claimed in claim 1, is characterized in that, described flow deflector is three rows.
3. static pressure Sound Attenuator as claimed in claim 2, is characterized in that, described first row flow deflector is two, and described second row flow deflector is two, and described the 3rd row's flow deflector is one.
4. static pressure Sound Attenuator as claimed in claim 3, is characterized in that, described first row flow deflector is corresponding to the position between described second row flow deflector, and described the 3rd row's flow deflector is corresponding to the position between described first row flow deflector.
5. static pressure Sound Attenuator as claimed in claim 1, is characterized in that, the number of degrees of described channelization angle are 60～150 °.
6. static pressure Sound Attenuator as claimed in claim 5, is characterized in that, the number of degrees of described channelization angle are 90～120 °.
7. static pressure Sound Attenuator as claimed in claim 6, is characterized in that, the number of degrees of described channelization angle are 110 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016443.5U CN203719088U (en) | 2014-01-11 | 2014-01-11 | Static pressure noise reduction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420016443.5U CN203719088U (en) | 2014-01-11 | 2014-01-11 | Static pressure noise reduction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719088U true CN203719088U (en) | 2014-07-16 |
Family
ID=51158234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420016443.5U Expired - Lifetime CN203719088U (en) | 2014-01-11 | 2014-01-11 | Static pressure noise reduction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203719088U (en) |
-
2014
- 2014-01-11 CN CN201420016443.5U patent/CN203719088U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |