CN202796039U - Intermittent staggered plate silencer - Google Patents
Intermittent staggered plate silencer Download PDFInfo
- Publication number
- CN202796039U CN202796039U CN 201220461942 CN201220461942U CN202796039U CN 202796039 U CN202796039 U CN 202796039U CN 201220461942 CN201220461942 CN 201220461942 CN 201220461942 U CN201220461942 U CN 201220461942U CN 202796039 U CN202796039 U CN 202796039U
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- sound absorber
- row
- chip
- sheet type
- sound
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Abstract
Disclosed is an intermittent staggered plate silencer. Two rows or more plate sound absorbers are arranged in a silencer shell, the axes of each row of plate sound absorbers are parallelly arranged at intervals along the airflow direction, and the two rows of plate sound absorbers are intermittently arranged and parallelly staggered. Each plate sound absorber is formed by covering glass wool cloth and surface protecting perforated plates on two surfaces of an inner sound absorbing material, the surface protecting perforated plates at two ends of each plate sound absorber are arc-shaped, the plate sound absorbers are mounted in the silencer shell by a positioner, and the sound absorbing materials covered with the glass wool cloth and the surface protecting perforated plates are arranged in the silencer shell. By the aid of the silencer with the plate sound absorbers of the same number and with the same spacing, the through width of an airflow channel can be effectively decreased, high-frequency failure is eliminated, silencing effects are fine, and the structure is simple.
Description
Technical field
This novel practical relates to a kind of dissipative muffler, particularly about a kind of have be interrupted the sound suppressor that stagger arrangement arranges anechoic sheet.
Background technology
Ventilation silencer is called for short sound suppressor, is to stop sound transmission and a kind of acoustic equipment of allowing air-flow to pass through.Keep low ground unrest at need, intercept the place of outside noise impact, and the strong noise place is to prevent noise to the impact of surrounding environment, simultaneously, need again ventilation, all sound suppressor need be set.Sound suppressor is used very extensive at architectural acoustics, noise control engineering.The kind of sound suppressor is a lot, its noise elimination mechanism, resistance noise reduction, reactive muffling, the noise elimination of impedance complex formula etc.Common sound suppressor adopts resistive plate silencer, and this kind sound suppressor has characteristics simple in structure, still, exists the soundproof effect of low-frequency noise undesirablely, and the existence of the spacing of chip can produce high frequency and lose efficacy.
According to Huygens' principle; Ripple is in communication process, and its direction of propagation changes when running into barrier, and the edge of cut-through thing continues the phenomenon of propagation.The interruption setting of noise elimination inserted sheet is equivalent to artificially in silencing channel, forms new sound field medium, and the diffracted wave of ripple reaches discontinuities, sews on each point and all can regard Source of Wavelets as, makes the wavelet envelope, obtains new wave front.In the edge that is interrupted, direction of wave travel changes.Dwindle when close with wavelength when the spacing of inserted sheet, diffracting effect is remarkable.When ripple propagates into the interphase of two media, the trend of sound wave just can be because of size and the incident acoustic wave wavelength scaling relation between the two of hole on barrier size, the barrier, change the rectilinear propagation direction of sound wave sound ray under certain condition, thereby produce reflection, diffraction (diffraction) and scattering.Arranging of noise elimination inserted sheet interval is the utilization of rule in engineering design of this acoustic propagation.
The utility model content
Undesirable for the soundproof effect that overcomes the low-frequency noise that has dissipative muffler now, the spacing of chip sound absorber produces high frequency than conference and lost efficacy, and it is little that the less meeting of spacing produces effective aisle spare, and wind speed is fast, the deficiency that air loss is large.This novel practical provides a kind of interruption stagger arrangement strip-type silencer, reduces gas channel and connects width, stops high frequency and loses efficacy, and improves soundproof effect, and is simple in structure.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of interruption stagger arrangement strip-type silencer, two row and above chip sound absorbers are set in the suppressor case, the axis of every row sheet type sound absorber is arranged along the airflow direction parallel interval, be interrupted arranging between the two row sheet type sound absorbers, and parallel staggered arrangement.At the chip sound absorber of same quantity and spacing, can effectively reduce gas channel and connect width, stop high frequency and lost efficacy.Because dissipative muffler is by the sound-absorbing porous material sound absorption, according to the theory of sound field medium to soundproof effect, in continuous silencing channel, sound deadening capacity is determined.Equal length arranges as being interrupted, and the incoherence of chip acoustic absorbant can form new sound field medium in silencing channel, and the sound field medium that the continuous turnover of sound wave is new, sound wave can produce again refraction, and the noise elimination of sound suppressor is further improved.The chip sound absorber is comprised of interior acoustic absorbant two sides cover glass silk cloth and mask perforated plate, and the mask perforated plate shape in the arc-shaped at chip sound absorber two ends, chip sound absorber use steady arm to be installed in the suppressor case.The mask perforated plate shape in the arc-shaped at chip sound absorber two ends, circular shape faces airflow direction, helps the improvement of aerodynamic quality.Acoustic absorbant cover glass silk cloth and mask perforated plate are set in the suppressor case.The row of the spacing between the every row sheet type sound absorber that arranges in the suppressor case, the length of every row sheet type sound absorber, chip sound absorber can require to adjust according to wind speed, air loss, sound deadening capacity.
Four row sheet type sound absorbers are set in the suppressor case, be interrupted between the 3rd row sheet type sound absorber and the second row chip sound absorber and arrange, and the level crossing arrangement, the 4th row sheet type sound absorber is consistent with aligning method and the aligning method between first row chip sound absorber and the second row chip sound absorber between the 3rd row sheet type sound absorber.
The beneficial effect of this novel practical is: at the sound suppressor with same quantity and spacing chip sound absorber, can effectively reduce gas channel and connect width, stop high frequency and lost efficacy, improve soundproof effect, and simple in structure.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 be interrupted first embodiment of stagger arrangement strip-type silencer the longitudinal profile structural map.
Fig. 2 is the side-looking sectional structural map of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 be interrupted second embodiment of stagger arrangement strip-type silencer the longitudinal profile structural map.
Fig. 5 is that the A-A of Fig. 4 is to sectional structural map.
1. suppressor cases among the figure, 2. chip sound absorber, 3. acoustic absorbant, 4. glass wool cloth, 5. mask perforated plate, 6. circular shape, 7. steady arm.
Embodiment
In first embodiment shown in Fig. 1,2,3, a kind of interruption stagger arrangement strip-type silencer, two row and above chip sound absorbers (2) are set in the suppressor case (1), the axis of every row sheet type sound absorber (2) is arranged along the airflow direction parallel interval, be interrupted arranging between the two row sheet type sound absorbers (2), and parallel staggered arrangement.Chip sound absorber (2) is comprised of acoustic absorbant (3) two sides cover glass silk cloth (4) and mask perforated plate (5), mask perforated plate (5) shape in the arc-shaped (6) at chip sound absorber (2) two ends, chip sound absorber (2) use steady arm (7) to be installed in the suppressor case (1).Acoustic absorbant (3) cover glass silk cloth (4) and mask perforated plate (5) are set in the suppressor case (1).The row of the spacing between the every row sheet type sound absorber (2) that arranges in the suppressor case (1), the length of every row sheet type sound absorber (2), chip sound absorber (2) can require to adjust according to wind speed, air loss, sound deadening capacity.
In second embodiment shown in Fig. 4,5, four row sheet type sound absorbers (2) are set in the suppressor case (1), be interrupted between the 3rd row sheet type sound absorber (2) and the second row chip sound absorber (2) and arrange, and the level crossing arrangement, the 4th row sheet type sound absorber (2) is consistent with aligning method and the aligning method between first row chip sound absorber (2) and the second row chip sound absorber (2) between the 3rd row sheet type sound absorber (2).
Should be appreciated that in the scope that does not break away from this novel practical, can make multiple combination and change to above-described embodiment.All at this novel practical spirit and principle within do any modification, be equal to and replace and improvement etc., all should be included within the protection domain of this novel practical.
Claims (5)
1. one kind is interrupted the stagger arrangement strip-type silencer, and two row and above chip sound absorbers are set in the suppressor case, and it is characterized in that: the axis of every row sheet type sound absorber is arranged along the airflow direction parallel interval, is interrupted arranging between the two row sheet type sound absorbers, and parallel staggered arrangement.
2. interruption stagger arrangement strip-type silencer according to claim 1, it is characterized in that: the chip sound absorber is comprised of interior acoustic absorbant two sides cover glass silk cloth and mask perforated plate, the mask perforated plate shape in the arc-shaped at chip sound absorber two ends, chip sound absorber use steady arm to be installed in the suppressor case.
3. interruption stagger arrangement strip-type silencer according to claim 1 is characterized in that: acoustic absorbant cover glass silk cloth and mask perforated plate are set in the suppressor case.
4. interruption stagger arrangement strip-type silencer according to claim 1 is characterized in that: the row of the spacing between the every row sheet type sound absorber that arranges in the suppressor case, the length of every row sheet type sound absorber, chip sound absorber can require adjust according to wind speed, air loss, sound deadening capacity.
5. interruption stagger arrangement strip-type silencer according to claim 1, it is characterized in that: four row sheet type sound absorbers are set in the suppressor case, be interrupted between the 3rd row sheet type sound absorber and the second row chip sound absorber and arrange, and the level crossing arrangement, the 4th row sheet type sound absorber is consistent with aligning method and the aligning method between first row chip sound absorber and the second row chip sound absorber between the 3rd row sheet type sound absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220461942 CN202796039U (en) | 2012-09-12 | 2012-09-12 | Intermittent staggered plate silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220461942 CN202796039U (en) | 2012-09-12 | 2012-09-12 | Intermittent staggered plate silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796039U true CN202796039U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220461942 Expired - Fee Related CN202796039U (en) | 2012-09-12 | 2012-09-12 | Intermittent staggered plate silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796039U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471226A (en) * | 2013-09-10 | 2013-12-25 | 西安建筑科技大学 | Piece type heat exchange silencer |
-
2012
- 2012-09-12 CN CN 201220461942 patent/CN202796039U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471226A (en) * | 2013-09-10 | 2013-12-25 | 西安建筑科技大学 | Piece type heat exchange silencer |
| CN103471226B (en) * | 2013-09-10 | 2016-01-27 | 西安建筑科技大学 | A kind of piece type heat exchange silencer |
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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: 20130313 Termination date: 20130912 |