CN204458553U - A kind of Multifunctional pneumatic power reclaiming type ventilation silencer - Google Patents
A kind of Multifunctional pneumatic power reclaiming type ventilation silencer Download PDFInfo
- Publication number
- CN204458553U CN204458553U CN201520016235.XU CN201520016235U CN204458553U CN 204458553 U CN204458553 U CN 204458553U CN 201520016235 U CN201520016235 U CN 201520016235U CN 204458553 U CN204458553 U CN 204458553U
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- CN
- China
- Prior art keywords
- sound absorption
- pneumatic power
- cylindrical shell
- type ventilation
- reclaiming type
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- 238000009423 ventilation Methods 0.000 title claims abstract description 20
- 230000003584 silencer Effects 0.000 title claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims description 5
- 230000030279 gene silencing Effects 0.000 abstract description 26
- 230000008030 elimination Effects 0.000 abstract description 4
- 238000003379 elimination reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
A kind of Multifunctional pneumatic power reclaiming type ventilation silencer, relates to the noise control technique field of machine room forced draft fan, during for solving existing machine room forced ventilation, and the problem that noise is still larger.A kind of Multifunctional pneumatic power reclaiming type ventilation silencer that the utility model provides, multiple silencing channel is set, port number ensure that the ratio of the noise elimination girth of each passage and the characteristic size of silencing channel is larger more, thus silencing apparatus upper limit failure frequency is improved.Each silencing channel is helical duct, and the length that makes effectively to eliminate the noise is increased, and improves unit sound deadening capacity.The design of conical centre's sound absorption cone, silencing apparatus is increased gradually along the area of passage of airflow direction, and gas flow rate is more and more less, reduces dynamic loss of energy, arranges guide plate at the air flow inlet place of silencing apparatus simultaneously, is conducive to ventilating, and then reduces noise.
Description
Technical field
The utility model relates to the noise control technique field of machine room forced draft fan, specifically a kind of Multifunctional pneumatic power reclaiming type ventilation silencer.
Background technique
Current equipment room ventilation has two kinds of modes, and the first is natural ventilation, and the second is forced ventilation.Forced ventilation utilizes ventilator to implement forced draft, to realize the ventilation of machine room.Ventilator produces larger noise in the running, has a strong impact on the environment outside machine room.Although fix a silencer on ventilator at present, and reduce certain noise.But still have the following disadvantages:
1, silencing apparatus mostly is the flow sections such as straight-tube, and muffler outlet flow velocity is large, and kinetic energy rejection is serious;
2, silencing apparatus mostly is single overcurrent and cuts passage, and equivalent size is large, silencing apparatus upper limit failure frequency is reduced, reduces silencing apparatus high frequency acoustic attenuation performance;
3, silencing apparatus effectively noise elimination length is restricted, and unit sound deadening capacity is lower;
4, silencing apparatus entrance does not meet blower fan and goes out to flow field requirements, makes silencing apparatus aerodynamic quality poor.
Model utility content
The purpose of this utility model is to provide a kind of Multifunctional pneumatic power reclaiming type ventilation silencer, during for solving existing machine room forced ventilation, and the problem that noise is still larger.
The technical scheme in the invention for solving the technical problem is: a kind of Multifunctional pneumatic power reclaiming type ventilation silencer, it is characterized in that, comprise sound absorption cylindrical shell, center sound absorption cone, fixed plate, screw piece and guide plate, the axis of described sound absorption cylindrical shell is provided with the center sound absorption cone of a taper, described center sound absorption cone is fixedly connected with by fixed plate with between sound absorption cylindrical shell, at least two screw pieces arranged along tubular axis direction are provided with between described center sound absorption cone and cylindrical shell, the two ends of screw piece described in each are separately fixed on the outer wall of cylinder inboard wall and center sound absorption cone, the guide plate that some radial directions are arranged is provided with in the cylindrical shell one end at described center sound absorption cone large end place.
Further, the quantity of described screw piece is four.
Further, the two ends of fixed plate described in each are separately fixed at the center large end of sound absorption cone with in body end surface.
Further, some described guide plates are evenly arranged on the end face of cylindrical shell, and described guide plate is tinsel.
Further, described screw piece is reversed by rectangular metal plate and obtains.
The beneficial effects of the utility model are: a kind of Multifunctional pneumatic power reclaiming type ventilation silencer that the utility model provides, multiple silencing channel is set, port number ensure that the ratio of the noise elimination girth of each passage and the equivalent diameter of silencing channel is larger more, thus silencing apparatus upper limit failure frequency is improved.Each silencing channel is helical duct, and the length that makes effectively to eliminate the noise is increased, and improves unit sound deadening capacity.The design of conical centre's sound absorption cone, silencing apparatus is increased gradually along the area of passage of airflow direction, and gas flow rate is more and more less, reduces dynamic loss of energy, is conducive to ventilating, and then reduces noise.
Accompanying drawing explanation
Fig. 1 is graphics of the present utility model;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the rear view of Fig. 1;
Fig. 4 is the graphics of screw piece;
Fig. 5 is the scheme of installation of a screw piece on center sound absorption cone;
Fig. 6 is the scheme of installations of four screw pieces on center sound absorption cone;
In figure: 1 sound absorption cylindrical shell, 2 screw pieces, 3 center sound absorption cones, 31 hold greatly, 32 small ends, 4 fixed plates, 5 guide plates.
Embodiment
As shown in Figures 1 to 6, the utility model comprises sound absorption cylindrical shell 1, screw piece 2, center sound absorption cone 3, fixed plate 4 and guide plate 5, is described the utility model below in conjunction with accompanying drawing.
As shown in Figure 5, center sound absorption cone 3 is conical metalwork, and the outer wall of center sound absorption cone is provided with sound-absorbing hole, is filled with sound-absorbing material, and has certain axial length in the inner chamber of described center sound absorption cone.As shown in Figure 6, sound absorption cone in center is fixed with four pieces of screw pieces 2, centrally the absorb sound outer wall of cone of four pieces of screw pieces is evenly arranged, screw piece is that the sheet metal reversed (can clamp the two ends of a square metal plate, then rotate square metal plate in the opposite direction and obtain), the mounting edge of the screw piece element of a cone direction that centrally absorbs sound is arranged.As shown in Figure 1 to Figure 3, be provided with a cylindrical shell 1 in the outside of center sound absorption cone, cylindrical shell is columnar metalwork, and the inwall of cylindrical shell contacts with the free end of screw piece and coordinates, and the axial length of center sound absorption cone is identical with the axial dimension of cylindrical shell.The end face of the cylindrical shell of the large end 31 of centering sound absorption cone is evenly provided with four fixed plates 4, each fixed plate is fixedly connected with corresponding screw piece side, four fixed plates surround " ten " font, one end of each fixed plate is fixed on cylinder inboard wall, the other end of each fixed plate is fixed on the large end 31 of center sound absorption cone, and each fixed plate is arranged along the radial direction of cylindrical shell.Between two often adjacent fixed plates, be provided with two guide plate 5, two guide plates be uniformly distributed between two fixed plates, the two ends of each guide plate absorb sound with center respectively and bore the outer wall held greatly and be fixedly connected with cylinder inboard wall.The air-flow acting as the disorder made through blower fan outflow of guide plate, flows into spiral silencing channel with minimum drag, improves the air pertormance of silencing apparatus.
Cylindrical shell is cylindrical shape, the axis of cylindrical shell arranges center sound absorption cone, between center sound absorption cone and cylindrical shell, four screw pieces are set, the two ends of each screw piece cone that absorbs sound with cylinder inboard wall and center is respectively fixedly connected with and good seal, like this, the inner chamber of cylindrical shell is divided into four separate spaces by four screw pieces, constitute four silencing channels, port number ensure that the ratio of the noise elimination girth of each silencing channel and the equivalent diameter of silencing channel is larger more, thus silencing apparatus upper limit failure frequency is improved.Screw piece is the curved surface template with twisting characteristic, and the design of the curved face type of screw piece makes silencing channel spirality, and then the length that makes effectively to eliminate the noise is increased, and improves unit length sound deadening capacity.Sound absorption cone in center is taper, the annulus area making center absorb sound between cone outer wall and cylinder inboard wall like this increases gradually along airflow direction, and namely silencing apparatus increases gradually along the area of passage of airflow direction, and gas flow rate is more and more less, dynamic loss of energy is reduced, decreases the waste of resource.
Claims (5)
1. a Multifunctional pneumatic power reclaiming type ventilation silencer, it is characterized in that, comprise sound absorption cylindrical shell, center sound absorption cone, fixed plate, screw piece and guide plate, the axis of described sound absorption cylindrical shell is provided with the center sound absorption cone of a taper, described center sound absorption cone is fixedly connected with by fixed plate with between sound absorption cylindrical shell, at least two screw pieces arranged along tubular axis direction are provided with between described center sound absorption cone and cylindrical shell, the two ends of screw piece described in each are separately fixed on the outer wall of cylinder inboard wall and center sound absorption cone, the guide plate that some radial directions are arranged is provided with in the cylindrical shell one end at described center sound absorption cone large end place.
2. a kind of Multifunctional pneumatic power reclaiming type ventilation silencer according to claim 1, is characterized in that, the quantity of described screw piece is four.
3. a kind of Multifunctional pneumatic power reclaiming type ventilation silencer according to claim 1, is characterized in that, the two ends of fixed plate described in each are separately fixed at the center large end of sound absorption cone with in body end surface.
4. a kind of Multifunctional pneumatic power reclaiming type ventilation silencer according to claim 1, it is characterized in that, some described guide plates are evenly arranged on the end face of cylindrical shell, and described guide plate is tinsel.
5. a kind of Multifunctional pneumatic power reclaiming type ventilation silencer according to claim 1, is characterized in that, described screw piece is reversed by rectangular metal plate and obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016235.XU CN204458553U (en) | 2015-01-09 | 2015-01-09 | A kind of Multifunctional pneumatic power reclaiming type ventilation silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520016235.XU CN204458553U (en) | 2015-01-09 | 2015-01-09 | A kind of Multifunctional pneumatic power reclaiming type ventilation silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204458553U true CN204458553U (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520016235.XU Active CN204458553U (en) | 2015-01-09 | 2015-01-09 | A kind of Multifunctional pneumatic power reclaiming type ventilation silencer |
Country Status (1)
| Country | Link |
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| CN (1) | CN204458553U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435664A (en) * | 2016-05-27 | 2017-12-05 | 中国科学院声学研究所 | A kind of axial cooling fan silencer |
| CN109410905A (en) * | 2018-12-21 | 2019-03-01 | 广东闽江水族实业有限公司 | A kind of muffler and the discharge structure with its muffler |
| CN111365215A (en) * | 2020-03-24 | 2020-07-03 | 西安交通大学 | Pneumatic silencer |
| CN114484530A (en) * | 2020-11-13 | 2022-05-13 | 广东美的白色家电技术创新中心有限公司 | Noise reduction element, noise reduction assembly and range hood |
| CN115111176A (en) * | 2022-06-30 | 2022-09-27 | 青岛雷霆重工股份有限公司 | Low-pitch noise reduction fan |
-
2015
- 2015-01-09 CN CN201520016235.XU patent/CN204458553U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435664A (en) * | 2016-05-27 | 2017-12-05 | 中国科学院声学研究所 | A kind of axial cooling fan silencer |
| CN109410905A (en) * | 2018-12-21 | 2019-03-01 | 广东闽江水族实业有限公司 | A kind of muffler and the discharge structure with its muffler |
| CN111365215A (en) * | 2020-03-24 | 2020-07-03 | 西安交通大学 | Pneumatic silencer |
| CN111365215B (en) * | 2020-03-24 | 2021-06-22 | 西安交通大学 | Pneumatic silencer |
| CN114484530A (en) * | 2020-11-13 | 2022-05-13 | 广东美的白色家电技术创新中心有限公司 | Noise reduction element, noise reduction assembly and range hood |
| CN115111176A (en) * | 2022-06-30 | 2022-09-27 | 青岛雷霆重工股份有限公司 | Low-pitch noise reduction fan |
| CN115111176B (en) * | 2022-06-30 | 2024-01-02 | 青岛雷霆重工股份有限公司 | Bass noise reduction fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |