CN212195846U - Marine air distributor of low-current noise - Google Patents
Marine air distributor of low-current noise Download PDFInfo
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- CN212195846U CN212195846U CN201922494850.2U CN201922494850U CN212195846U CN 212195846 U CN212195846 U CN 212195846U CN 201922494850 U CN201922494850 U CN 201922494850U CN 212195846 U CN212195846 U CN 212195846U
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Abstract
The utility model provides a marine air distributor of low-flow noise, it includes box, porous water conservancy diversion amortization baffle, air intake and air outlet. The box body is respectively connected with the air inlet and the air outlet, and the airflow flows into the box body from the air inlet and then flows out of the box body from the air outlet. The porous flow guide and silencing partition plate is arranged in the box body, the space in the box body is divided into an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air inlet, the air outlet cavity is communicated with the air outlet, the porous flow guide and silencing partition plate is made of sound absorption materials and is provided with a plurality of through holes, and air flow flows into the air outlet cavity from the air inlet cavity through the through holes.
Description
Technical Field
The present disclosure relates to an air distributor, and more particularly, to an air distributor for a low flow noise ship.
Background
The air distributor is an important device at the tail end of the air conditioning and ventilating system of the ship, plays a role in adjusting the air environment of the cabin of the ship, and is also one of the main noise sources of the cabin of the ship. As the demand for comfort in the living environment for crew and passengers has further increased, the noise environment has become one of the evaluation criteria for evaluating ships, and therefore, it is necessary to design a noise reduction device as one of the main noise sources.
The marine noise elimination air distributor in the prior art has several obvious problems in design: the pressure stabilizing effect is poor, the pressure loss is large, the air flow at the air outlet is uneven, and extra air flow noise is generated. For example, in some marine single-temperature air-conditioning air distributors, the airflow needs to go through 2 right-angle turns in the flow direction after entering the air distributor, and only 1 180-degree turn can be discharged from the air outlet. Every quarter turn of the air flow means a pressure loss related to the velocity squared, while at higher air flow velocities the turn of the air flow creates turbulence generating additional aerodynamic noise, and even resonating with the structure of the air distributor generating additional vibrational noise. The marine air distributor needs to turn twice by 180 degrees and turn twice by 90 degrees, although the static sound absorption effect is good due to the long silencing path, the pressure stabilizing effect of the air distributor is poor due to the large-amplitude turning for many times, the pressure loss is obviously increased, meanwhile, the obvious turbulence noise can be generated, and the turbulence noise is more obvious at higher speed.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above technical problems, the present disclosure provides a low-flow-noise wind distributor for a ship, which includes a box body, a porous flow-guiding and noise-reducing partition plate, a wind inlet, and a wind outlet. The box body is respectively connected with the air inlet and the air outlet, and the airflow flows into the box body from the air inlet and then flows out of the box body from the air outlet. The porous flow guide and silencing partition plate is arranged in the box body, the space in the box body is divided into an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air inlet, the air outlet cavity is communicated with the air outlet, the porous flow guide and silencing partition plate is made of sound absorption materials and is provided with a plurality of through holes, and air flow flows into the air outlet cavity from the air inlet cavity through the through holes.
According to at least one embodiment of the present disclosure, the porous flow-guiding sound-deadening barrier has a layered structure.
According to at least one embodiment of the present disclosure, the porous diversion and noise reduction partition plate has a three-layer structure, the middle layer is the basf sound absorption cotton, and the two outer layers are the micro-perforated plates.
According to at least one embodiment of the present disclosure, the through holes are arranged such that the resonance frequency of the porous flow-guiding sound-deadening barrier is the same as or close to the frequency of the noise generated by the air flow.
According to at least one embodiment of the present disclosure, the porous flow-guiding and noise-reducing partition is obliquely arranged in the box body.
According to at least one embodiment of the present disclosure, a porous flow-guiding and sound-deadening partition is disposed on a diagonal surface of the tank body.
According to at least one embodiment of this disclosure, the cloth wind ware still includes the sealed cushion of fire prevention, sets up in air outlet department for adjust the size of air outlet department amount of wind and close the cloth wind ware.
According to at least one embodiment of this disclosure, the cloth wind ware still includes air regulator, and it links to each other with the sealed cushion of fire prevention through ball screw, rotates air regulator, drives the sealed cushion of fire prevention and removes to adjust the size of air outlet department amount of wind and close the cloth wind ware.
According to at least one embodiment of the present disclosure, the air distributor further includes a dispersion plate connected to the air volume regulator.
According to at least one embodiment of the present disclosure, the diffuser plate is a streamlined diffuser plate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a two-dimensional block diagram of a low flow noise marine air distributor according to at least one embodiment of the present disclosure.
Fig. 2 is a three-dimensional structural view of a low flow noise marine air distributor according to at least one embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The purpose of the disclosure is to overcome the defects of large pressure loss and turbulent noise generation of the marine noise elimination air distributor in the prior art. In at least one embodiment of the present disclosure, as shown in fig. 1, the present disclosure provides a low flow noise marine air distributor, which includes a box body 1, a porous flow-guiding noise-reducing partition plate 2, an air inlet 3, and an air outlet. The box body 1 is respectively connected with the air inlet 3 and the air outlet, and the airflow flows into the box body 1 from the air inlet 3 and flows out of the box body 1 from the air outlet. Porous water conservancy diversion amortization baffle 2 sets up in box 1, separates the space in the box 1 for the chamber of admitting air and giving vent to anger the chamber, and the chamber of admitting air communicates with air intake 3, and the chamber of giving vent to anger communicates with the air outlet, and porous water conservancy diversion amortization baffle 2 is prepared by sound absorbing material, is provided with a plurality of through-holes, and the air current flows into the chamber of giving vent to anger from the chamber of admitting air via the through-hole.
The number of the air inlets 3 can be one or more, for example, double air inlets 3 are arranged to meet the requirement that some marine air distributors have double-channel air inlets. The shape of the air inlet 3 can be round or square and other shapes.
According to at least one embodiment of the present disclosure, the porous flow-guiding sound-deadening barrier 2 has a layered structure. Preferably, the porous flow-guiding silencing partition plate 2 is of a three-layer structure, the middle layer is the basf sound-absorbing cotton, and the two outer layers are made of perforated micro-perforated plates in a punching mode. The micro-perforated plate achieves the purpose of sound absorption by means of the effect of attenuating sound waves through a plurality of fine open pore passages from the surface to the inside, and the micro-perforated plate mainly absorbs medium-high frequency sound waves.
The perforated plate is also a sound absorbing material, which is made by perforating various plate-like materials or metal plates, and mainly absorbs medium-frequency sound waves. In order to enhance the sound absorption effect, the through holes of the porous flow-guiding noise-reducing partition plate 2 are arranged so that the resonance frequency of the porous flow-guiding noise-reducing partition plate 2 is the same as or close to the frequency of the noise generated by the airflow. Thus, the porous flow guide silencing partition plate 2 plays the roles of flow guide and sound absorption at the same time, and not only is the passage of the airflow from the air inlet chamber to the air outlet chamber, but also the noise generated by airflow flowing can be reduced.
In order to increase the area of the sound absorption material, a porous flow-guiding sound-absorbing partition plate 2 is obliquely arranged in the box body 1. Preferably, the perforated baffle 2 is disposed on the diagonal surface of the tank 1, as shown in fig. 1 and 2. The front end wall of the porous flow-guiding silencing partition plate 2 can be welded with the lower wall of the box body 1, and the rear end wall of the porous flow-guiding silencing partition plate 2 is welded with the upper wall of the box body 1.
According to at least one embodiment of this disclosure, the cloth wind ware still includes fire prevention sealed cushion 4, sets up in air outlet department for adjust the size of air outlet department amount of wind and close the cloth wind ware.
The air distributor also comprises an air volume regulator 5 which is connected with the fireproof sealing cushion 4 through a ball screw 6, and the air volume regulator 5 is rotated to drive the fireproof sealing cushion 4 to move so as to regulate the air volume at the air outlet and close the air distributor.
The air distributor also comprises a dispersion plate 7, and the dispersion plate 7 is connected with the air volume regulator 5. Preferably, the dispersion plate 7 may be easily detached by being bolted to the air volume adjuster 5. The dispersion plate 7 is a streamline dispersion plate.
The utility model provides a marine air distributor of low current noise adopts sound absorption cotton and porous water conservancy diversion amortization baffle that the perforated plate is constituteed to replace structure such as U template, labyrinth in the noise elimination air distributor, when air distributor box inside has certain sound absorption effect, and it is smooth and easy that the flow is in the air distributor, and the velocity of flow is even, and loss of pressure is little, and turbulence noise is little, has solved current marine noise elimination air distributor loss of pressure greatly, and turbulence noise is obvious problem. Meanwhile, the air volume adjusting device is designed at the outlet of the air distributor, the sealing performance is good, and the larger the incoming flow pressure of the air distributor is, the better the sealing performance is. It should be understood that the air distributor provided by the present disclosure is not limited to use on a ship, and can also be used in other scenes, and the purpose of reducing the pressure loss and turbulent noise of the air distributor can be achieved.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A low-flow noise marine air distributor is characterized by comprising a box body, a porous flow guide and noise reduction partition plate, an air inlet and an air outlet;
the box body is respectively connected with the air inlet and the air outlet, and airflow flows into the box body from the air inlet and then flows out of the box body from the air outlet;
the porous flow-guiding silencing partition is arranged in the box body and divides the space in the box body into an air inlet cavity and an air outlet cavity, the air inlet cavity is communicated with the air inlet, the air outlet cavity is communicated with the air outlet, the porous flow-guiding silencing partition is made of sound-absorbing materials and is provided with a plurality of through holes, and the air flow flows into the air outlet cavity from the air inlet cavity through the through holes.
2. The air distributor of claim 1, wherein the porous flow-guiding sound-deadening barrier is a layered structure.
3. The air distributor according to claim 2, wherein the porous flow-guiding and noise-reducing partition plate is of a three-layer structure, the middle layer is made of basf sound-absorbing cotton, and the two outer layers are made of micro-perforated plates.
4. The air distributor of claim 3, wherein the through holes are arranged such that the resonant frequency of the porous flow-directing noise-attenuating barrier is the same as the frequency of the noise generated by the air flow.
5. The air distributor of claim 4, wherein the porous flow-guiding and sound-attenuating partition is obliquely arranged in the box body.
6. The air distributor of claim 5, wherein the porous flow-guiding sound-deadening barrier is disposed on a diagonal surface of the box body.
7. The air distributor according to claim 1, further comprising a fireproof sealing cushion arranged at the air outlet for adjusting the amount of air at the air outlet and closing the air distributor.
8. The air distributor of claim 7, further comprising an air volume regulator, wherein the air volume regulator is connected to the fire-proof sealing cushion through a ball screw, and the air volume regulator is rotated to drive the fire-proof sealing cushion to move so as to regulate the amount of air at the air outlet and close the air distributor.
9. The air distributor of claim 8, further comprising a diffuser plate, wherein the diffuser plate is connected to the air volume regulator.
10. The air distributor of claim 9, wherein the diffuser plate is a streamlined diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922494850.2U CN212195846U (en) | 2019-12-31 | 2019-12-31 | Marine air distributor of low-current noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922494850.2U CN212195846U (en) | 2019-12-31 | 2019-12-31 | Marine air distributor of low-current noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212195846U true CN212195846U (en) | 2020-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922494850.2U Active CN212195846U (en) | 2019-12-31 | 2019-12-31 | Marine air distributor of low-current noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212195846U (en) |
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2019
- 2019-12-31 CN CN201922494850.2U patent/CN212195846U/en active Active
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