CN214945301U - Noise eliminator for tunnel fan - Google Patents
Noise eliminator for tunnel fan Download PDFInfo
- Publication number
- CN214945301U CN214945301U CN202120579842.2U CN202120579842U CN214945301U CN 214945301 U CN214945301 U CN 214945301U CN 202120579842 U CN202120579842 U CN 202120579842U CN 214945301 U CN214945301 U CN 214945301U
- Authority
- CN
- China
- Prior art keywords
- noise
- silencing
- noise elimination
- elimination portion
- 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.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a noise eliminator for tunnel fan relates to tunnel fan technical field, be provided with shell and installed part including noise eliminator body surface, noise eliminator body both sides set up first noise elimination portion and second noise elimination portion respectively, and first noise elimination portion is kept away from second noise elimination portion one end and is provided with the air intake, and first noise elimination portion one end is kept away from to second noise elimination portion is provided with the air outlet, first noise elimination portion and second noise elimination portion inside are fixed with the guide plate, the guide plate extends to the air outlet direction, first noise elimination portion and second noise elimination portion all include first microperforated panel and second microperforated panel, form first cavity between first microperforated panel and the second microperforated panel, form the second cavity between second microperforated panel and the shell, the utility model discloses eliminate noise effectual, easy to assemble.
Description
Technical Field
The utility model relates to a tunnel fan technical field especially relates to a noise eliminator for tunnel fan.
Background
In modern production and life, noise pollution is considered to be the third largest pollution next to atmospheric pollution and water pollution. The noise seriously affects the work and life of people, harms the organism of people, causes fatigue, generates negative emotion and even causes diseases. Because in tunnel construction or use, all need use the fan and be used for improving gas pressure and discharge gas, can produce the noise in the fan use, the frequency range of its noise is wide. At present, the noise control of the tunnel mainly has the defects that the low-frequency noise elimination effect is poor, and the good noise elimination effect cannot be achieved; in order to achieve a good silencing effect, the silencer is large in size, can occupy a large effective ventilation section of a tunnel, generates large resistance, causes pressure loss, and causes reduction of effective power of a fan, and the silencer for the tunnel fan is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome exist among the prior art not enough, provide a noise eliminator for tunnel fan.
The utility model discloses a realize through following technical scheme:
the utility model provides a silencing device for tunnel fan, silencing device body surface is provided with shell and installed part, and silencing device body both sides set up first noise elimination portion and second noise elimination portion respectively, and second noise elimination portion one end is kept away from to first noise elimination portion is provided with the air intake, and first noise elimination portion one end is kept away from to second noise elimination portion is provided with the air outlet, first noise elimination portion and second noise elimination portion internal fixation have the guide plate, the guide plate extends to the air outlet direction, first noise elimination portion and second noise elimination portion all include first microperforated panel and second microperforated panel, form first cavity between first microperforated panel and the second microperforated panel, form the second cavity between second microperforated panel and the shell.
The utility model discloses technical scheme's further improvement lies in: the guide plates are arranged in a staggered mode and comprise two parallel rigid plates, and silencing cotton is clamped between the rigid plates.
The utility model discloses technical scheme's further improvement lies in: one end of the first silencing part, which is far away from the air inlet, is provided with a fairing.
The utility model discloses technical scheme's further improvement lies in: the second silencing part is provided with a resonant cavity close to the air outlet, and the air outlet is provided with a silencing net.
The utility model has the advantages that: the installation part is arranged on the shell on the outer surface of the silencing device body, so that the installation is convenient, the first silencing part and the second silencing part are arranged, the length of an airflow path is prolonged, the silencing effect is improved, the first micro-perforated plate and the second micro-perforated plate are adopted to realize noise silencing, and the first cavity and the second cavity further absorb noise through refraction and reflection noise; the guide plates are arranged in a staggered manner, so that the movement direction of the air flow is guided, the noise energy is absorbed, the noise is eliminated, the air flow speed is reduced by the staggered guide plates, the noise reduction effect is improved, and the noise elimination cotton between the rigid plates plays a role in further absorbing noise; the fairing is arranged to reduce the wind resistance of the airflow, avoid the formation of vortex and reduce the operation noise of the fan; the second noise elimination portion is provided with the resonant cavity, the energy of noise is consumed through air resonance friction in the resonant cavity, the noise reduction effect is achieved, and the noise elimination net is arranged to further reduce noise.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. a muffler body; 2. a housing; 3. a mounting member; 4. a first muffling portion; 5. a second muffling section; 6. an air inlet; 7. an air outlet; 8. a first microperforated panel; 9. a second microperforated panel; 10. a baffle; 11. a cowling; 12. a resonant cavity; 13. a sound-deadening net.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in the figure, the utility model provides a noise eliminator for tunnel fan, 1 surface of noise eliminator body is provided with shell 2 and installed part 3, and 1 both sides of noise eliminator body set up first noise elimination portion 4 and second noise elimination portion 5 respectively, and first noise elimination portion 4 is kept away from 5 one ends of second noise elimination portion and is provided with air intake 6, and second noise elimination portion 5 is kept away from 4 one ends of first noise elimination portion and is provided with air outlet 7, first noise elimination portion 4 and 5 inside guide plates 10 that are fixed with of second noise elimination portion, guide plates 10 extend to air outlet 7 direction, first noise elimination portion 4 and second noise elimination portion 5 all include first microperforated panel 8 and second microperforated panel 9, form first cavity between first microperforated panel 8 and the second microperforated panel 9, form the second cavity between second microperforated panel 9 and the shell 2. The mounting part 3 further comprises lifting lugs arranged at two ends of the shell 2, and the guide plate 10 comprises three parts.
In a further embodiment, the baffles 10 are staggered, and the baffles 10 comprise two parallel rigid plates, and the silencing cotton is sandwiched between the rigid plates.
In a further embodiment, the first sound-deadening portion 4 is provided with a cowling 11 at an end thereof remote from the air inlet 6. The fairing becomes the cone shape, has reduced air current ventilation resistance and has avoided the vortex to form, is favorable to reducing the operation noise of fan.
In a further embodiment, a resonant cavity 12 is disposed at the second sound-deadening portion 5 near the air outlet 7, and a sound-deadening net 13 is disposed at the air outlet 7.
The utility model discloses a theory of operation is: the mounting piece 3 is arranged on the shell 2 on the outer surface of the silencing device body 1, so that the mounting is convenient, the first silencing part 4 and the second silencing part 5 are arranged, the length of an airflow path is prolonged, the silencing effect is improved, the noise is silenced by adopting the first micro-perforated plate 8 and the second micro-perforated plate 9, and the noise is further absorbed by refracting and reflecting the noise in the first cavity and the second cavity; the guide plates 10 are arranged in a staggered mode, so that the moving direction of air flow can be guided, noise energy can be absorbed, noise can be eliminated, the guide plates 10 are staggered, the air flow speed is reduced, the noise reduction effect is improved, and the noise elimination cotton between the rigid plates can further absorb noise; the fairing 11 is arranged to reduce the wind resistance of the airflow, avoid the formation of vortex and reduce the running noise of the fan; the second muffling portion 5 is provided with a resonant cavity 12, so that the energy of noise is consumed through air resonance friction in the resonant cavity 12, and the noise reduction effect is achieved, and the muffling net 13 is arranged to further reduce noise.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The utility model provides a noise eliminator for tunnel fan which characterized in that: the outer surface of the silencing device body is provided with an outer shell and a mounting part, the two sides of the silencing device body are respectively provided with a first silencing part and a second silencing part, one end of the first silencing part, which is far away from the second silencing part, is provided with an air inlet, one end of the second silencing part, which is far away from the first silencing part, is provided with an air outlet, a guide plate is fixed inside the first silencing part and the second silencing part, extends towards the air outlet, the first silencing part and the second silencing part respectively comprise a first micro-perforated plate and a second micro-perforated plate, a first cavity is formed between the first micro-perforated plate and the second micro-perforated plate, and a second cavity is formed between the second micro-perforated plate and the outer shell.
2. The muffler device for a tunnel blower according to claim 1, wherein: the guide plates are arranged in a staggered mode and comprise two parallel rigid plates, and silencing cotton is clamped between the rigid plates.
3. The muffler device for a tunnel blower according to claim 1, wherein: one end of the first silencing part, which is far away from the air inlet, is provided with a fairing.
4. The muffler device for a tunnel blower according to claim 1, wherein: the second silencing part is provided with a resonant cavity close to the air outlet, and the air outlet is provided with a silencing net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579842.2U CN214945301U (en) | 2021-03-22 | 2021-03-22 | Noise eliminator for tunnel fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579842.2U CN214945301U (en) | 2021-03-22 | 2021-03-22 | Noise eliminator for tunnel fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214945301U true CN214945301U (en) | 2021-11-30 |
Family
ID=79041757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120579842.2U Active CN214945301U (en) | 2021-03-22 | 2021-03-22 | Noise eliminator for tunnel fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214945301U (en) |
-
2021
- 2021-03-22 CN CN202120579842.2U patent/CN214945301U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214945301U (en) | Noise eliminator for tunnel fan | |
| CN111503410A (en) | Helmholtz type silencer | |
| CN201650427U (en) | Gasoline generating set silencing device | |
| CN215595959U (en) | Silencer of axial flow fan | |
| CN213519239U (en) | Damping silencer and gas water heater thereof | |
| CN211819571U (en) | Amortization structure and gas machine | |
| CN212508702U (en) | High-temperature-resistant silencer | |
| CN202181974U (en) | Impedance composite type admission air silencer for diesel fork lift truck | |
| CN213118001U (en) | Nitrogen discharging silencer for oxygenerator | |
| CN113153825A (en) | A silencing device and fan for fan | |
| CN210830985U (en) | Rectangular array silencer for ventilation pipeline | |
| CN205330766U (en) | Aperture high frequency silencer | |
| RU157128U1 (en) | COMBINED SILENCER OF AERODYNAMIC NOISE | |
| CN209802129U (en) | Cooling tower with silencer | |
| CN208106527U (en) | A kind of gasoline engine exhaust silencer being made of antipriming pipe | |
| CN219453255U (en) | Pipeline silencing tool | |
| CN112576338A (en) | Spark extinguishing silencer for marine diesel engine | |
| CN217210438U (en) | Bottom blowing type noise elimination cooling tower | |
| CN221054016U (en) | Low-noise high-pressure centrifugal fan | |
| CN210687445U (en) | Double-square-shaped silencer for ventilating duct | |
| CN214403724U (en) | Post-treatment silencing structure | |
| CN217814175U (en) | Fan volute capable of reducing noise | |
| CN208564692U (en) | Chain saw muffler | |
| CN219081676U (en) | Engine silencer | |
| CN220168186U (en) | Noise elimination low noise formula mixed flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |