CN212985634U - Silencer of centrifugal fan - Google Patents
Silencer of centrifugal fan Download PDFInfo
- Publication number
- CN212985634U CN212985634U CN202021812260.6U CN202021812260U CN212985634U CN 212985634 U CN212985634 U CN 212985634U CN 202021812260 U CN202021812260 U CN 202021812260U CN 212985634 U CN212985634 U CN 212985634U
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- Prior art keywords
- silencing
- barrel
- centrifugal fan
- noise
- fixed
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- 230000003584 silencer Effects 0.000 title claims description 10
- 238000013016 damping Methods 0.000 claims abstract description 16
- 239000002023 wood Substances 0.000 claims abstract description 12
- 210000002268 wool Anatomy 0.000 claims abstract description 11
- 230000030279 gene silencing Effects 0.000 claims description 46
- 239000006260 foam Substances 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 230000008030 elimination Effects 0.000 abstract description 4
- 238000003379 elimination reaction Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a centrifugal fan muffler, including ring cover and centrifugal fan body, the fixed cover of ring cover connects on the casing of centrifugal fan body, the casing intercommunication has the barrel, the inner wall of barrel is fixed with the damping acoustical panel. The utility model discloses well noise is absorbed many times in the barrel, the effect of making an uproar is fallen is greatly improved, side through at the barrel sets up noise reduction mechanism, can fall the noise once more, be the cross align to grid in the noise reduction section of thick bamboo through the wood wool abatvoix, can make the noise dwell time increase in the noise reduction section of thick bamboo, the wood wool abatvoix has been increased the absorption time to the noise, make its noise reduction effect greatly increased, the air current after the processing of making an uproar is discharged through the horn mouth, the horn mouth increases air flow discharge port, reduce its frictional force, make its noise elimination as far as possible when discharging.
Description
Technical Field
The utility model relates to a muffler technical field especially relates to centrifugal fan muffler.
Background
The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of the input mechanical energy, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.
However, when the centrifugal fan is operated, noise is generated greatly, which distracts surrounding workers and affects hearing, and therefore, in order to solve such problems, a silencer for the centrifugal fan is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the centrifugal fan during operation among the prior art, it produces the noise very big, makes staff's attention dispersion on every side, influences the shortcoming of its hearing, and the centrifugal fan muffler that provides.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
centrifugal fan muffler, including ring cover and centrifugal fan body, the fixed cup joint of ring cover is on the casing of centrifugal fan body, the casing intercommunication has the barrel, the inner wall of barrel is fixed with the damping acoustical panel, the side of damping acoustical panel is fixed with the dead lever, the end fixing of dead lever has the aluminium abatvoix, the inner wall of barrel is fixed with curved wave board, first through-hole has been seted up on the wave board, the tip intercommunication of barrel has the horn mouth, the outer wall of barrel is provided with noise cancelling mechanism.
Preferably, the silencing mechanism comprises a first silencing pipe, the first silencing pipe penetrates through the cylinder body, the first silencing pipe is communicated with a silencing barrel, wood wool sound-absorbing plates are fixed to the inner wall of the silencing barrel and are uniformly arranged in a crossed mode, and one end, far away from the first silencing pipe, of the silencing barrel is communicated with the cylinder body.
Preferably, the corners of the silencing tube are provided with arc-shaped corners, and one end of the silencing tube, which is far away from the first silencing tube, is communicated with the barrel body through the second silencing tube.
Preferably, the first silencing pipe is located between the wave plate and the damping silencing plate, and the damping silencing plate is arranged in a conical shape.
Preferably, the cylinder body is fixedly sleeved with a fixing ring, a sealing ring is fixed on the side face of the fixing ring, and the fixing ring is fixedly connected with the ring sleeve through a bolt.
Preferably, a foam board is fixed on the inner wall of the cylinder body, and a second through hole is formed in the foam board.
Compared with the prior art, the beneficial effects of the utility model are that:
1: the utility model discloses in eliminate the noise through damping acoustical panel, the air current that aluminium acoustical panel and dead lever used messenger centrifugal fan to produce is divided into the twice when the barrel flows, and when the air current was through first through-hole, the wave board was fallen and is made an uproar to it, falls again and makes an uproar to it through the cystosepiment again, and the noise is absorbed many times in the barrel, has improved the effect of making an uproar greatly.
2: the utility model discloses in set up amortization mechanism through the side at the barrel, can fall the noise once more, be the cross align to grid through the wood wool abatvoix in a noise elimination section of thick bamboo, can make the noise dwell time increase in a noise elimination section of thick bamboo, the wood wool abatvoix has been increased the absorption time to the noise, make its noise reduction effect greatly increased, the air current after the processing of making an uproar is fallen is discharged through the horn mouth, the horn mouth increases air flow discharge port, reduce its frictional force, make its noise elimination as far as possible when discharging.
Drawings
Fig. 1 is a cross-sectional view of a silencer for a centrifugal fan according to the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
fig. 3 is a partially enlarged view of a portion B in fig. 1.
In the figure: the acoustic damper comprises a ring sleeve 1, a sealing ring 2, a damping acoustic panel 3, a first acoustic pipe 4, an aluminum acoustic panel 5, a fixing rod 6, a corrugated plate 7, a first through hole 8, an arc-shaped corner 9, an acoustic barrel 10, a wood wool acoustic panel 11, a cylinder 12, a second through hole 13, a foam plate 14, a horn mouth 15, a centrifugal ventilator body 16, a second acoustic pipe 17, a fixing ring 18 and a bolt 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the silencer of the centrifugal fan comprises a ring sleeve 1 and a centrifugal fan body 16, wherein the ring sleeve 1 is fixedly sleeved on a casing of the centrifugal fan body 16, the casing is communicated with a cylinder 12, a damping silencing plate 3 is fixed on the inner wall of the cylinder 12, a fixing rod 6 is fixed on the side face of the damping silencing plate 3, an aluminum silencing plate 5 is fixed at the end of the fixing rod 6, an arc-shaped wave plate 7 is fixed on the inner wall of the cylinder 12, a first through hole 8 is formed in the wave plate 7, a horn mouth 15 is communicated with the end of the cylinder 12, and a silencing mechanism is arranged on the outer wall of the cylinder 12.
The silencing mechanism comprises a first silencing pipe 4, the first silencing pipe 4 penetrates through a cylinder body 12, the first silencing pipe 4 is communicated with a silencing barrel 10, a wood wool sound-absorbing plate 11 is fixed on the inner wall of the silencing barrel 10, the wood wool sound-absorbing plate 11 is in crossed uniform arrangement, one end, far away from the first silencing pipe 4, of the silencing barrel 10 is communicated with the cylinder body 12, the corners of the silencing barrel 10 are provided with arc-shaped corners 9, one end, far away from the first silencing pipe 4, of the silencing barrel 10 is communicated with the cylinder body 12 through a second silencing pipe 17, the first silencing pipe 4 is located between a corrugated plate 7 and a damping sound-absorbing plate 3, and the damping sound-absorbing plate 3 is in conical arrangement.
The cylinder 12 is fixedly sleeved with a fixing ring 18, the side surface of the fixing ring 18 is fixed with a sealing ring 2, the fixing ring 18 is fixedly connected with the ring sleeve 1 through a bolt 19, the inner wall of the cylinder 12 is fixed with a foam plate 14, and the foam plate 14 is provided with a second through hole 13.
The working principle is as follows: when in use, the cylinder body 12 is communicated with the air outlet of the centrifugal fan body 1 through the bolt 19, air flow enters the cylinder body 12 through the air outlet, the noise is eliminated through the damping sound-absorbing plate 3, the air flow generated by the centrifugal fan is divided into two paths when flowing in the cylinder body 12 due to the matching use of the aluminum sound-absorbing plate 5 and the fixed rod 6, when the air flow passes through the first through hole 8, the wave plate 7 reduces the noise, the redundant air flow which does not pass through the first through hole 8 enters the sound-absorbing cylinder 10 through the first sound-absorbing pipe 4, the air flow passing through the first through hole 8 is reduced again through the foam plate 14, the noise is absorbed for a plurality of times in the cylinder body 12, the noise reduction effect is greatly improved, the air flow in the sound-absorbing cylinder 10 is reduced through the noise reduction mechanism, the wood wire sound-absorbing plates 11 are uniformly arranged in the sound-absorbing cylinder 10 in a crossed manner, so that the staying time of the noise in the sound, the time for absorbing noise by the wood wool sound-absorbing board 11 is prolonged, the noise reduction effect is greatly increased, air subjected to noise reduction treatment flows through the bell mouth 15 to be discharged, the air flow discharge port is enlarged by the bell mouth 15, the friction force is reduced, and the noise is eliminated as far as possible when the air flow discharge port is discharged.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. Centrifugal fan muffler, including ring cover (1) and centrifugal fan body (16), its characterized in that, ring cover (1) is fixed cup joints on the casing of centrifugal fan body (16), the casing intercommunication has barrel (12), the inner wall of barrel (12) is fixed with damping acoustical panel (3), the side of damping acoustical panel (3) is fixed with dead lever (6), the end fixing of dead lever (6) has aluminium acoustical panel (5), the inner wall of barrel (12) is fixed with curved wave board (7), first through-hole (8) have been seted up on wave board (7), the tip intercommunication of barrel (12) has horn mouth (15), the outer wall of barrel (12) is provided with noise cancelling mechanism.
2. The silencer of the centrifugal fan according to claim 1, wherein the silencing mechanism comprises a first silencing pipe (4), the first silencing pipe (4) penetrates through the cylinder body (12), the first silencing pipe (4) is communicated with a silencing barrel (10), wood wool sound-absorbing plates (11) are fixed on the inner wall of the silencing barrel (10), the wood wool sound-absorbing plates (11) are uniformly arranged in a crossed mode, and one end, far away from the first silencing pipe (4), of the silencing barrel (10) is communicated with the cylinder body (12).
3. The silencer of the centrifugal fan as claimed in claim 2, wherein the corners of the silencing tubes (10) are provided with arc-shaped corners (9), and one end of the silencing tube (10) far away from the first silencing tube (4) is communicated with the cylinder body (12) through a second silencing tube (17).
4. The silencer of the centrifugal fan according to claim 2, characterized in that the first silencing duct (4) is located between the corrugated plate (7) and the damping silencing plate (3), the damping plate (3) being conically arranged.
5. The silencer of the centrifugal fan according to claim 1, wherein a fixing ring (18) is fixedly sleeved on the cylinder (12), a sealing ring (2) is fixed on the side surface of the fixing ring (18), and the fixing ring (18) is fixedly connected with the ring sleeve (1) through a bolt (19).
6. The silencer of the centrifugal fan according to claim 1, wherein a foam plate (14) is fixed on the inner wall of the cylinder (12), and the foam plate (14) is provided with a second through hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021812260.6U CN212985634U (en) | 2020-08-26 | 2020-08-26 | Silencer of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021812260.6U CN212985634U (en) | 2020-08-26 | 2020-08-26 | Silencer of centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212985634U true CN212985634U (en) | 2021-04-16 |
Family
ID=75435305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021812260.6U Active CN212985634U (en) | 2020-08-26 | 2020-08-26 | Silencer of centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212985634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027825A (en) * | 2021-04-19 | 2021-06-25 | 深圳市贵庭机电设备有限公司 | Fire control smoke exhaust fan export noise eliminator |
| CN115788972A (en) * | 2022-12-13 | 2023-03-14 | 浙江省海洋水产研究所 | Noise reduction device for fishing boat pipeline type axial flow fan |
-
2020
- 2020-08-26 CN CN202021812260.6U patent/CN212985634U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027825A (en) * | 2021-04-19 | 2021-06-25 | 深圳市贵庭机电设备有限公司 | Fire control smoke exhaust fan export noise eliminator |
| CN115788972A (en) * | 2022-12-13 | 2023-03-14 | 浙江省海洋水产研究所 | Noise reduction device for fishing boat pipeline type axial flow fan |
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