CN214170962U - Noise reduction box for high-pressure centrifugal fan and high-pressure centrifugal fan - Google Patents
Noise reduction box for high-pressure centrifugal fan and high-pressure centrifugal fan Download PDFInfo
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- CN214170962U CN214170962U CN202120273084.1U CN202120273084U CN214170962U CN 214170962 U CN214170962 U CN 214170962U CN 202120273084 U CN202120273084 U CN 202120273084U CN 214170962 U CN214170962 U CN 214170962U
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Abstract
The application relates to a noise reduction box for a high-pressure centrifugal fan and the high-pressure centrifugal fan, belonging to the field of fans, and comprising a shell, wherein the shell is provided with an air inlet and an air outlet; the air inlet end of the air pipe faces the air inlet, and the air outlet end of the air pipe faces the air outlet; the flow guide piece is correspondingly arranged at the air inlet; the direction of the wind entering from the air inlet is changed at the diversion part, the wind enters the air cavity along the flow direction of the conical surface of the conical diversion part and then flows into the plurality of air pipes, the air flow moves orderly in the air pipes, the phenomenon that the fluid moves disorderly due to overlarge space to cause larger pressure fluctuation is reduced, and the wind noise is reduced on the basis of not reducing the wind quantity because the wind speed of the air flow in the air pipes is not reduced.
Description
Technical Field
The utility model belongs to the technical field of the fan, especially, relate to a case and high-pressure centrifugal fan of making an uproar falls for high-pressure centrifugal fan.
Background
The centrifugal fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, and is a driven fluid machine, wherein gas axially enters a blade space from the fan and then rotates along with an impeller under the driving of the impeller; on the other hand, the energy is improved under the action of inertia, and the impeller leaves the impeller along the radial direction. The centrifugal high pressure is widely applied to the fields of ventilation and air induction of factories, power plants, steel plants, industrial furnaces and kilns, and the like, particularly to the field of hollow glass machine production. The high-pressure centrifugal fan belongs to a small-flow high-wind-pressure fan, so that large wind noise is generated in the work, and the noise emitted from the air inlet and the air outlet of the fan to the environment can reach 110 plus 130 decibels without adopting a noise elimination measure, so that the health and the interference environment of a user are greatly influenced.
SUMMERY OF THE UTILITY MODEL
This application is in order to solve current high-pressure centrifugal fan and produce great wind in normal course of the work and make an uproar, and make an uproar to utilize filter mesh or speed reduction orifice plate to realize in order to solve the great wind that produces through prior art, but this has reduced high-pressure centrifugal fan's amount of wind to a certain extent, the problem of making an uproar is fallen to the prerequisite that this application can solve not reducing the amount of wind and make an uproar, so, design a noise reduction box and high-pressure centrifugal fan for high-pressure centrifugal fan, its specifically adopted technical scheme is:
a noise reduction box for a high pressure centrifugal fan, comprising:
the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air inlet and an air outlet;
a splitter plate arranged in the shell, an air cavity arranged between the splitter plate and one side of the shell close to the air inlet,
the air pipes are uniformly arranged on the flow distribution plate at intervals along the air inlet direction, the air inlet ends of the air pipes face the air inlet, and the air outlet ends of the air pipes face the air outlet;
and the flow guide piece is correspondingly arranged at the air inlet and used for changing the wind direction.
Preferably, the flow guide part is a conical flow guide part, and the conical end of the flow guide part faces the air inlet.
Preferably, the flow distribution plate is provided with a mounting hole, a flange protruding towards one side is arranged on the flow distribution plate along the periphery of the mounting hole, and one end of the air pipe is detachably arranged on the flange.
Preferably, one end of the air duct is press-fitted into the flange.
Preferably, a sealing gasket is arranged between the end part of the air pipe and the flange.
Preferably, the gasket is a rubber gasket.
Preferably, the number of the air inlets is two, the number of the flow guide pieces is two, and the two flow guide pieces are correspondingly arranged at the air inlets.
Preferably, still be equipped with the baffler in the casing, the baffler sets up with the parallel interval of flow distribution plate, and the interval is equipped with a plurality of through-holes on the tuber pipe circumference lateral wall, and glass silk cloth has been laid to tuber pipe circumference lateral wall, and the cavity intussuseption that forms between baffler and the flow distribution plate and between tuber pipe and the tuber pipe is filled with and inhales the sound cotton.
This application still protects a high-pressure centrifugal fan, including above-mentioned noise reduction box, still include:
the fan shell is provided with an air suction opening and an air outlet, and the air suction opening of the fan shell is communicated with the air outlet of the shell of the noise reduction box.
Preferably, the fan shell and the shell of the noise reduction box are the same shell, and the air outlet end of the air pipe faces the air suction side of the centrifugal fan.
The utility model discloses a set up tuber pipe and water conservancy diversion spare, the wind that gets into from the air intake is in the diversion of water conservancy diversion spare department, the toper face flow direction of following toper water conservancy diversion spare enters the air cavity, in flowing into a plurality of tuber pipes again, the air current is orderly motion in the tuber pipe, it arouses great pressure fluctuation because of the too big fluid that leads to of space produces unordered motion to have reduced wind greatly and made an uproar, and can make an uproar to reduce the wind below 80 decibels, simultaneously because the air current is the wind speed in the tuber pipe does not reduce, consequently reduce wind on the basis that does not reduce the amount of wind and make an uproar.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a half-sectional view of FIG. 1, taken at an angle to direction A of FIG. 1;
fig. 3 is a plan view of the diverter plate and the air ducts thereon.
In the figure, the air conditioner comprises a shell 1, a shell 2, an air inlet 3, a fan shell 4, an air outlet 5, a flow guide piece 6, a flow distribution plate 7, an air pipe 8, a flange 9, a sealing gasket 10, a mounting hole 11, glass fiber cloth 12, an air cavity 13, an air suction opening 14, a centrifugal fan 15, a baffle plate 16, sound absorption cotton 17 and a through hole.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments with reference to the accompanying drawings.
In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Specifically, in this application, the direction a in fig. 1 is the left-right direction, the side of the casing 1 on which the air inlet 2 is disposed is the front side, the opposite rear side, and other directions are defined based on the above-mentioned defined direction, with the orientation of the human body toward the front side, the left-hand side is the left side, the right-hand side is the right side, the vertex direction is the upper end surface, and the sole direction is the lower end surface.
As shown in fig. 1-3, a noise reduction box for a high-pressure centrifugal fan and the high-pressure centrifugal fan comprise a housing 1, a flow distribution plate 6, an air pipe 7 and a flow guide piece 5.
Wherein, casing 1 is stainless steel casing 1, is equipped with air intake 2 at casing 1's leading flank, is equipped with the air outlet at the rear side of casing 1 of noise reduction box.
The flow distribution plate 6 is arranged in the housing 1, the flow distribution plate 6 can divide the noise reduction box into two parts, wherein an air cavity 12 is arranged between the flow distribution plate 6 and one side of the housing 1 close to the air inlet 2, and the air cavity 12 is used for providing a space for changing the air direction.
Above-mentioned tuber pipe 7 sets up a plurality ofly, and a plurality of tuber pipes 7 set up in flow distribution plate 6 (tuber pipe 7 sets up along the fore-and-aft direction of making an uproar case promptly along the even interval of air inlet direction), and the air inlet end of tuber pipe 7 is towards air intake 2, and the air-out end of tuber pipe 7 is towards the air outlet of making an uproar case.
The flow guide piece 5 is correspondingly arranged at the air inlet 2.
The case of making an uproar falls from air intake 2 air, wind through air intake 2 department turns to around the direction at water conservancy diversion spare 5, increase wind is in the distribution area in the air cavity 12 of flow distribution plate 6 and casing 1, then, wind after water conservancy diversion spare 5 cloth wind gets into evenly and gets into in a plurality of tuber pipes 7, the air current is orderly motion in tuber pipe 7, it produces out of order motion and arouses great pressure fluctuation because of the too big fluid that leads to in space, thereby greatly reduced wind and made an uproar, and because the wind speed of wind in tuber pipe 7 increases to a certain extent, so the amount of wind can not reduce.
Further, in order to change the wind direction, the wind direction is diffused from the original wind inlet direction to the surrounding direction, the flow guide piece 5 is a conical flow guide piece 5, the conical end of the flow guide piece 5 faces the wind inlet 2, so that when wind enters from the wind inlet 2, the wind blows towards the wind cavity 12 between the shell 1 and the splitter plate 6 along the direction of the conical surface of the conical flow guide piece 5, then the wind basically and uniformly enters each wind pipe 7, the wind pipe 7 close to the wind inlet 2 is prevented from entering a large amount of wind, and the wind entering from the wind pipe 7 far away from the wind inlet 2 is less.
Further, to being connected between flow distribution plate 6 and tuber pipe 7, it is concrete, have mounting hole 10 at flow distribution plate 6, be equipped with the protruding flange 8 of one side along mounting hole 10 week on flow distribution plate 6, the one end of tuber pipe 7 can be dismantled and set up in flange 8. Through setting up 8 installation that can be convenient for tuber pipe 7 of flange, the follow-up maintenance and the change of tuber pipe 7 of being convenient for on the second hand.
Further, in some embodiments, the detachable connection between the air duct 7 and the flange 8 is implemented, specifically, one end of the air duct 7 is press-fit onto the flange 8, one end of the air duct 7 is fixed on the flange 8 by crimping the flange 8, and since the aperture of the mounting hole 10 is slightly larger than the outer diameter of the air duct 7, the whole flow distribution plate 6 supports the air duct 7 to a certain extent, and the air duct 7 can be fixed by connecting one end.
Further, a gasket 9 is provided between the end of the duct 7 and the flange 8 in order to prevent air in the duct 7 from flowing between the duct 7 and the inner wall of the mounting hole 10.
Furthermore, in some embodiments, the sealing gasket 9 is a rubber gasket, and the sealing gasket 9 improves the pressing force between the sealing gasket and the flange 8 and between the sealing gasket and the air pipe 7 through self deformation, so that the wind can mostly flow through the air pipe 7.
Further, in order to meet the requirement of the high-pressure centrifugal fan 14 on large air volume, the air inlets 2 are arranged in two, meanwhile, the corresponding guide pieces 5 are also arranged in two, the two guide pieces 5 are correspondingly arranged at the air inlets 2, the air inlets 2 are arranged in two, the areas of the air inlets 2 of the two air inlets 2 can be increased, alignment with the air pipes 7 is further achieved, air distribution uniformity is further improved, and air can uniformly enter the air pipes 7.
Further, in order to protect the air duct 7, improve the service life of the air duct 7, and improve the noise reduction effect, a blocking plate 15 is further arranged in the casing 1, the blocking plate 15 and the splitter plate 6 are arranged in parallel at intervals, in this embodiment, the blocking plate 15 is a steel plate, a plurality of through holes 17 are arranged on the circumferential side wall of the air duct 7 at intervals, glass fiber cloth 11 is laid on the circumferential side wall of the air duct 7, the glass fiber cloth 11 can be arranged on the inner wall of the air duct 7 or attached to the outer wall of the air duct 7, and sound-absorbing cotton 16 is filled in cavities formed between the blocking plate 15 and the splitter plate 6 and between the air duct 7 and the air duct 7, in this embodiment, the sound-absorbing cotton 16 is glass fiber cotton, and can absorb the generated wind noise, and the glass fiber cloth 11 can prevent part of the glass fiber cotton from being sucked into the centrifugal fan 14, so as to ensure the cleanness of the wind sucked by the centrifugal fan 14; meanwhile, the air pipe 7 can be protected to reduce weathering of the air pipe 7, and even friction of high air pressure to the air pipe 7 can be reduced.
The application also protects a centrifugal fan, which is equipped with the noise reduction box, wherein the centrifugal fan 14 adopts the existing high-pressure fan, the centrifugal fan 14 also has a fan shell 3, the fan shell 3 also has an air suction opening 13 and an air outlet 4, and the air suction opening 13 of the centrifugal fan 14 is communicated with the air outlet 4 of the noise reduction box. Specifically, the inlet scoop 13 of centrifugal fan 14 is with the air-out end intercommunication of tuber pipe 7, and the wind that flows out from a plurality of tuber pipes 7 directly gets into the inlet scoop 13 of centrifugal fan 14, because the power drive that whole distinguished and admirable is that centrifugal fan 14 provided, consequently, the noise reduction box is exactly the device that the wind was made an uproar and is handled to the wind on one side of centrifugal fan 14 inlet scoop 13 in essence, and wind gets into centrifugal fan 14 through the noise reduction box, greatly reduced whole centrifugal fan 14's wind noise.
In this embodiment, in order to improve the structural compactness between the whole centrifugal fan 14 and the noise reduction box, the noise reduction box and the centrifugal fan 14 are effectively integrated, the fan housing 3 and the housing 1 of the noise reduction box are the same housing 1, and the air outlet end of the air pipe 7 faces the air suction side of the centrifugal fan 14.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. A noise reduction box for a high-pressure centrifugal fan, comprising:
a housing having an air inlet and an air outlet;
the flow distribution plate is arranged in the shell, an air cavity is arranged between the flow distribution plate and one side of the shell close to the air inlet,
the air pipes are uniformly arranged on the flow distribution plate at intervals along the air inlet direction, the air inlet ends of the air pipes face the air inlet, and the air outlet ends of the air pipes face the air outlet;
and the flow guide piece is correspondingly arranged at the air inlet and is used for changing the wind direction.
2. The noise reduction box for the high-pressure centrifugal fan according to claim 1, wherein the flow guide member is a conical flow guide member, and a conical end of the flow guide member faces the air inlet.
3. The noise reduction box for the high-pressure centrifugal fan according to claim 1, wherein the flow distribution plate is provided with a mounting hole, a flange protruding to one side is arranged on the flow distribution plate along the circumferential direction of the mounting hole, and one end of the air pipe is detachably arranged on the flange.
4. The noise reduction box for a high-pressure centrifugal fan according to claim 3, wherein one end of the air pipe is press-fitted into the flange.
5. The noise reduction box for the high-pressure centrifugal fan according to claim 3 or 4, wherein a sealing gasket is arranged between the end of the air pipe and the flange.
6. The noise reduction box for the high-pressure centrifugal fan as claimed in claim 5, wherein the sealing gasket is a rubber gasket.
7. The noise reduction box for the high-pressure centrifugal fan according to claim 1, wherein the number of the air inlets is two, the number of the flow guide members is two, and the two flow guide members are correspondingly arranged at the air inlets.
8. The noise reduction box for the high-pressure centrifugal fan according to claim 1, wherein a blocking plate is further arranged in the shell, the blocking plate and the splitter plate are arranged at intervals in parallel, a plurality of through holes are formed in the circumferential side wall of the air pipe at intervals, glass fiber cloth is laid on the circumferential side wall of the air pipe, and sound absorption cotton is filled in cavities formed between the blocking plate and the splitter plate and between the air pipe and the air pipe.
9. A high-pressure centrifugal fan comprising the noise reduction box according to any one of claims 1 to 8, characterized by further comprising:
the fan shell is provided with an air suction opening and an air outlet, and the air suction opening of the fan shell is communicated with the air outlet of the shell of the noise reduction box.
10. The centrifugal fan as claimed in claim 9, wherein the fan housing and the housing of the noise reduction box are the same housing, and the air outlet end of the air duct faces the air suction side of the centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120273084.1U CN214170962U (en) | 2021-01-28 | 2021-01-28 | Noise reduction box for high-pressure centrifugal fan and high-pressure centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120273084.1U CN214170962U (en) | 2021-01-28 | 2021-01-28 | Noise reduction box for high-pressure centrifugal fan and high-pressure centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214170962U true CN214170962U (en) | 2021-09-10 |
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ID=77594410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120273084.1U Active CN214170962U (en) | 2021-01-28 | 2021-01-28 | Noise reduction box for high-pressure centrifugal fan and high-pressure centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214170962U (en) |
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2021
- 2021-01-28 CN CN202120273084.1U patent/CN214170962U/en active Active
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