CN210317932U - Sheet type multi-frequency silencer for fan air duct - Google Patents
Sheet type multi-frequency silencer for fan air duct Download PDFInfo
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- CN210317932U CN210317932U CN201921094025.7U CN201921094025U CN210317932U CN 210317932 U CN210317932 U CN 210317932U CN 201921094025 U CN201921094025 U CN 201921094025U CN 210317932 U CN210317932 U CN 210317932U
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- silencer
- fan
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Abstract
The utility model discloses a sheet type multi-frequency silencer for a fan air duct, which comprises a first inner liner at the upper and lower sides and a second inner liner at the left and right sides; a silencing structure formed by vertically and horizontally embedding a plurality of first silencing pieces and a plurality of second silencing pieces is fixed between the first lining and the second lining, namely the first silencing pieces are provided with a plurality of first assembling grooves, the second silencing pieces are provided with a plurality of second assembling grooves, and the first assembling grooves and the second assembling grooves are installed in a matched mode. The utility model discloses the device has chip silencer simple to operate and the good advantage of honeycomb formula silencer noise elimination effect simultaneously.
Description
Technical Field
The utility model relates to a wind channel noise elimination technical field, concretely relates to fan is piece formula multifrequency silencer for wind channel still has the good function of making an uproar of falling when the fan changes because of the noise frequency spectrum that the load change caused.
Background
The fan is a general mechanical device with a large amount and a wide range, and is used in almost all industries. In the process of using the fan, the noise can greatly affect production, environment and the like, the fan design and manufacturing technology is continuously improved along with the improvement of the performance requirement of the fan in industrial development, and people schedule the noise reduction of the fan.
At present, a method for reducing the noise of a fan through improving the structure of the fan exists, but the noise of the fan cannot meet the environmental protection requirement through a single improved fan structure, and the noise can be reduced to the allowable range only by additionally arranging an air duct silencer at an air duct at an inlet or an outlet of the fan. The air duct sheet type silencer is generally arranged in a one-way mode, and although the air duct sheet type silencer is convenient to install, the sound absorption quantity does not reach the best effect because the cross section of a channel is a long and narrow rectangle. The honeycomb type silencer has good silencing effect, but is complex to manufacture and install.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a fan is piece formula multifrequency silencer for wind channel is provided, has piece formula silencer simple to operate and the good advantage of honeycomb formula silencer noise elimination effect simultaneously.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a sheet type multi-frequency silencer for a fan air duct comprises a first inner liner on the upper side and a second inner liner on the left side and the right side; a silencing structure formed by vertically and horizontally embedding a plurality of first silencing pieces and a plurality of second silencing pieces is fixed between the first lining and the second lining, namely the first silencing pieces are provided with a plurality of first assembling grooves, the second silencing pieces are provided with a plurality of second assembling grooves, and the first assembling grooves and the second assembling grooves are installed in a matched mode.
Furthermore, the thickness of the first lining is half of that of the first silencing sheet, and the thickness of the second lining is half of that of the second silencing sheet.
Furthermore, the two sides of the first silencing piece for air inlet and outlet are provided with first closed angles, and the two sides of the second silencing piece for air inlet and outlet are provided with second closed angles.
Further, the first lining and the second lining are both made of sound absorption materials.
Further, the first and second sound-deadening sheets have different thicknesses.
Further, the surface of the first sound-absorbing sheet is provided with a first perforated cover plate and a first sound-absorbing material layer, and the surface of the second sound-absorbing sheet is provided with a second perforated cover plate and a second sound-absorbing material layer.
Compared with the prior art, the beneficial effects of the utility model are that: 1) the thicknesses of the two noise elimination sheets and the arrangement number can be designed according to the specific noise condition of the fan. 2) The sound absorption effect of the plate type silencer is improved due to the fact that the sound absorption plates are transversely and longitudinally arranged. 3) Set up the assembly groove, make the utility model discloses structure convenient assembling, simple structure.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention;
fig. 2 is a front view of a first silencing sheet of the present invention;
fig. 3 is a side view of a first silencing sheet of the present invention;
fig. 4 is a front view of a second silencing sheet of the present invention;
fig. 5 is a side view of a second noise reduction sheet according to the present invention.
In the figure: 1-an air duct; 2-a first liner; 3-a second liner; 4-a first sound-deadening sheet; 5-a second sound-absorbing sheet; 41-a first perforated housing plate; 42-a first sound absorbing material layer; 43-a first cusp; 44-a first mounting groove; 51-a second perforated shroud; 52-a second layer of sound absorbing material; 53-second sharp corner; 54-second assembly groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a fan is piece formula multifrequency silencer for wind channel, its structure is: comprises a first inner liner 2 at the upper and lower sides and a second inner liner 3 at the left and right sides; a silencing structure formed by vertically and horizontally embedding a plurality of first silencing sheets 4 and a plurality of second silencing sheets 5 is fixed between the first inner liner 2 and the second inner liner 3, namely, the first silencing sheets 4 are provided with a plurality of first assembling grooves 44, the second silencing sheets 5 are provided with a plurality of second assembling grooves 54, and the first assembling grooves 44 and the second assembling grooves 54 are installed in a matching way.
The first inner lining 2 consists of a perforated cover panel and a sound absorption material layer protected by a facing fabric, and the thickness of the first inner lining is half of that of the first silencing sheet 4.
The second inner lining 3 is composed of a perforated cover panel and a sound absorption material layer protected by a facing fabric, and the thickness of the second inner lining is half of that of the second sound absorption sheet 5.
The detailed structure of the first muffling sheet 4 includes: a first perforated cover plate 41, a sound absorbing material (namely a first sound absorbing material layer 42) protected by a facing fabric, first sharp corners 43 at the front end and the rear end (having a flow guiding function and being capable of properly reducing the resistance generated by the silencer), and a first assembling groove 44 (the size of which is matched with that of the second silencing sheet 5 so as to be convenient for installation); the first silencing plate 4 is controlled in thickness and can correspond to a first resonant frequency.
The detailed structure of the second muffling sheet 5 includes: a second perforated cover plate 51, a sound-absorbing material (i.e., a second sound-absorbing material layer 52) protected by a facing fabric, second sharp corners 53 at the front and rear ends (having a flow-guiding function and capable of properly reducing the resistance generated by the muffler), and second assembling grooves 54 (the size of which is matched with that of the first muffling sheet 4 and is convenient to install); the second sound-absorbing sheet 5 is controlled in thickness to correspond to a first resonance frequency.
In the utility model, the first silencing sheet 4 and the second silencing sheet 5 adopt two thicknesses, the first resonant frequency is different, and the first resonant frequency can be determined according to the frequency spectrum characteristics of the noise generated by the fan under different loads; the first silencing sheet 4 and the second silencing sheet 5 are transversely and longitudinally arranged, so that the air duct is divided into small square channels, and a better sound absorption effect is achieved; meanwhile, the fitting grooves (the first fitting groove 44 and the second fitting groove 54) provided on the first muffling sheet 4 and the second muffling sheet 5 make the assembly more convenient.
Claims (6)
1. A sheet type multi-frequency silencer for a fan air duct is characterized by comprising a first inner liner (2) on the upper side and the lower side and a second inner liner (3) on the left side and the right side; a silencing structure formed by vertically and horizontally embedding a plurality of first silencing sheets (4) and a plurality of second silencing sheets (5) is fixed between the first lining (2) and the second lining (3), namely the first silencing sheets (4) are provided with a plurality of first assembling grooves (44), the second silencing sheets (5) are provided with a plurality of second assembling grooves (54), and the first assembling grooves (44) and the second assembling grooves (54) are installed in a matched mode.
2. The plate type multi-frequency silencer for the fan duct is characterized in that the thickness of the first lining (2) is half of that of the first silencing plate (4), and the thickness of the second lining (3) is half of that of the second silencing plate (5).
3. The plate type multi-frequency silencer for the fan air duct is characterized in that the first silencing plate (4) is provided with first sharp corners (43) at the air inlet and the air outlet, and the second silencing plate (5) is provided with second sharp corners (53) at the air inlet and the air outlet.
4. The plate-type multi-frequency silencer for the fan duct according to claim 1, wherein the first liner (2) and the second liner (3) are made of sound-absorbing material.
5. The plate type multi-frequency silencer for the fan duct is characterized in that the thicknesses of the first silencing plate (4) and the second silencing plate (5) are different.
6. The plate-type multi-frequency silencer for the fan duct according to claim 1, wherein the first silencing plate (4) is provided with a first perforated cover plate (41) and a first sound-absorbing material layer (42) on the surface, and the second silencing plate (5) is provided with a second perforated cover plate (51) and a second sound-absorbing material layer (52) on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921094025.7U CN210317932U (en) | 2019-07-13 | 2019-07-13 | Sheet type multi-frequency silencer for fan air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921094025.7U CN210317932U (en) | 2019-07-13 | 2019-07-13 | Sheet type multi-frequency silencer for fan air duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317932U true CN210317932U (en) | 2020-04-14 |
Family
ID=70150883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921094025.7U Active CN210317932U (en) | 2019-07-13 | 2019-07-13 | Sheet type multi-frequency silencer for fan air duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317932U (en) |
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2019
- 2019-07-13 CN CN201921094025.7U patent/CN210317932U/en active Active
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