CN201779073U - Impedance compound silencer - Google Patents
Impedance compound silencer Download PDFInfo
- Publication number
- CN201779073U CN201779073U CN2010201692308U CN201020169230U CN201779073U CN 201779073 U CN201779073 U CN 201779073U CN 2010201692308 U CN2010201692308 U CN 2010201692308U CN 201020169230 U CN201020169230 U CN 201020169230U CN 201779073 U CN201779073 U CN 201779073U
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- CN
- China
- Prior art keywords
- shell
- anechoic sheet
- frame
- air inlet
- air outlet
- Prior art date
- 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 - Fee Related
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Abstract
The utility model relates to an impedance compound silencer which comprises a shell and tightening flanges, wherein an air inlet is arranged at the front part of the shell, and an air outlet is arranged at the back part of the shell; the tightening flanges are arranged at the air inlet and the air outlet; a sound absorption component is arranged in the shell; the sound absorption component comprises a plurality of silencing sheets which are tightly arranged at equal intervals in the longitudinal direction and two layers of a plurality of silencing sheets which are arranged at equal intervals in the transverse direction above and below the air inlet and the air outlet; each silencing sheet comprises a supporting steel frame and a glass sound absorption sheet; each silencing sheet is transversely fixed with the shell of the silencer in a welding mode; the shell is in a cubic structure; the air inlet and the air outlet are in the same shape and are rectangular; and the longitudinal interval between two layers of silencing sheets which are arranged in the transverse direction above and below the air inlet and the air outlet is equal to the height of the air inlet and the air outlet.
Description
Technical field
The utility model relates to a kind of blower fan silencing equipment, relates in particular to a kind of adaptive impedance complex formula silencing apparatus of industrial blower fan that is.
Background technique
The blower fan silencing apparatus adopts centering, high-frequency wideband characteristic that the resistive absorbing sound and lowering noise principle of better effects is arranged, and the reactive muffling flat action principle of good result is arranged during to low, intermediate frequency and pulse characteristic.At present existing blower fan silencing apparatus is divided into dissipative muffler and reactive muffler.Dissipative muffler is a kind of absorption-type silencing apparatus, difference according to airflow channel structure, generally be divided into straighttube-type, chip, folded plate type, honeycomb, acoustic streaming formula, mazy type and bending head type etc., utilize sound wave when porous sound-absorbing material is propagated, rubbed and viscous resistance, acoustic energy is converted into thermal dissipation falls, thereby reach the purpose of noise elimination flat.It is a class silencing apparatus that is most widely used in all silencing apparatuss.It is different with dissipative muffler noise elimination noise reduction principle for reactive muffler, it can not directly absorb acoustic energy, but utilize the interface or the side that suddenly change on the pipeline to connect resonant cavity, make some frequency sound wave along pipe transmmision, in the reflecting at the interface of sudden change, phenomenon such as interference, thereby reach the purpose of noise elimination flat.More than two kinds of different structure principle type silencing apparatuss have the not enough problems that can not accomplish simultaneously the effect of eliminating the noise of low frequency, intermediate frequency and three kinds of spectrum values of high frequency.
The model utility content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, proposes a kind of novel impedance complex formula silencing apparatus that combines the characteristic of resistive type and resistance type blower fan acoustic wave filter structure and working principle.
The utility model achieves the goal by following measure:
Impedance complex formula silencing apparatus, comprise frame and clamp flange, the frame front portion is provided with intake grill, the rear portion is provided with exhaust outlet, intake grill and exhaust outlet all are provided with clamp flange, frame inside is provided with acoustic absorptive member, described acoustic absorptive member is by equidistantly arrange anechoic sheet closely and form jointly at the inlets and putlets of ventilation two-layer anechoic sheet that multi-disc equidistantly arranges of laterally arranging up and down of vertical multi-disc, anechoic sheet is made up of supporting steel frame and glass sound absorption plate, anechoic sheet and muffler shell body are with the welding manner crosswise fixed, described frame is a cube structure, described intake grill and exhaust outlet are identical shaped rectangle, and described two-layer anechoic sheet fore-and-aft distance of laterally arranging up and down equals the height of inlets and putlets of ventilation.
The beneficial effects of the utility model by: adopt steel frame construction the glass sound absorption plate and in the sudden change of tube section and the expansion structure between the inner and outer pipes constituted, the muffler shell body is cube structure, intermediate frequency and radio-frequency head there are bigger noise elimination effect, can be used for reducing the noise of all kinds of blower fans in air conditioning heating and refrigeration, the ventilation system.
Description of drawings
Fig. 1 is the utility model cross-sectional view;
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
Shown embodiment of the present utility model in the accompanying drawing.
Impedance complex formula silencing apparatus, comprise frame 1 and clamp flange 2, the frame front portion is provided with intake grill, the rear portion is provided with exhaust outlet, intake grill and exhaust outlet all are provided with clamp flange 2, frame inside is provided with acoustic absorptive member 3, described acoustic absorptive member is by equidistantly arrange anechoic sheet closely and form jointly at the inlets and putlets of ventilation two-layer anechoic sheet that multi-disc equidistantly arranges of laterally arranging up and down of vertical multi-disc, anechoic sheet is made up of supporting steel frame 4 and glass sound absorption plate 5, anechoic sheet and muffler shell body are with the welding manner crosswise fixed, described frame is a cube structure, described intake grill and exhaust outlet are identical shaped rectangle, and described two-layer anechoic sheet fore-and-aft distance of laterally arranging up and down equals the height of inlets and putlets of ventilation.
During the utility model work, the clamp flange on intake grill and the exhaust outlet is fixed in the utility model structure in the Fan pipeline, operates adaptive blower fan and can make the utility model work.
Claims (1)
1. impedance complex formula silencing apparatus, it is characterized in that comprising frame and clamp flange, the frame front portion is provided with intake grill, the rear portion is provided with exhaust outlet, intake grill and exhaust outlet all are provided with clamp flange, frame inside is provided with acoustic absorptive member, described acoustic absorptive member is by equidistantly arrange anechoic sheet closely and form jointly at the inlets and putlets of ventilation two-layer anechoic sheet that multi-disc equidistantly arranges of laterally arranging up and down of vertical multi-disc, anechoic sheet is made up of supporting steel frame and glass sound absorption plate, anechoic sheet and muffler shell body are with the welding manner crosswise fixed, described frame is a cube structure, described intake grill and exhaust outlet are identical shaped rectangle, and described two-layer anechoic sheet fore-and-aft distance of laterally arranging up and down equals the height of inlets and putlets of ventilation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201692308U CN201779073U (en) | 2010-04-26 | 2010-04-26 | Impedance compound silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201692308U CN201779073U (en) | 2010-04-26 | 2010-04-26 | Impedance compound silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779073U true CN201779073U (en) | 2011-03-30 |
Family
ID=43792285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201692308U Expired - Fee Related CN201779073U (en) | 2010-04-26 | 2010-04-26 | Impedance compound silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727073A (en) * | 2013-12-03 | 2014-04-16 | 山东金阳矿业集团有限公司 | Muffler system of main fan |
| CN104121232A (en) * | 2014-05-19 | 2014-10-29 | 安徽三星环保装备制造有限公司 | Large fan in-out air muffling tower |
-
2010
- 2010-04-26 CN CN2010201692308U patent/CN201779073U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727073A (en) * | 2013-12-03 | 2014-04-16 | 山东金阳矿业集团有限公司 | Muffler system of main fan |
| CN104121232A (en) * | 2014-05-19 | 2014-10-29 | 安徽三星环保装备制造有限公司 | Large fan in-out air muffling tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20120426 |