CN212003666U - Ultralow noise centrifugal fan with multistage noise reduction structure - Google Patents
Ultralow noise centrifugal fan with multistage noise reduction structure Download PDFInfo
- Publication number
- CN212003666U CN212003666U CN202020555691.2U CN202020555691U CN212003666U CN 212003666 U CN212003666 U CN 212003666U CN 202020555691 U CN202020555691 U CN 202020555691U CN 212003666 U CN212003666 U CN 212003666U
- Authority
- CN
- China
- Prior art keywords
- centrifugal fan
- fan main
- wall
- main body
- main part
- 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 discloses an ultralow noise centrifugal fan with multistage structure of making an uproar of falling, including centrifugal fan main part, motor and centrifugal impeller, the motor is installed on the top of centrifugal fan main part, and the output of motor is connected with centrifugal impeller, the inner wall of centrifugal fan main part is inconsistent with the surface in amortization storehouse, and the inside veneer in amortization storehouse has soundproof cotton. The utility model discloses be provided with soundproof cotton and micropore board, set up some through-holes through the micropore board surface and can absorb the noise that centrifugal impeller produced to can make both cooperate in order to reach the effect of further noise reduction through soundproof cotton, through being provided with the shutter, can prevent through the shutter that the foreign matter from when the centrifugal fan main part uses, get into the inside of centrifugal fan main part, can prevent simultaneously that the dust from getting into inside when the centrifugal fan main part does not use, thereby can effectual improvement centrifugal fan main part's life.
Description
Technical Field
The utility model relates to a centrifugal fan technical field specifically is an ultralow noise centrifugal fan with multistage structure of making an uproar of falling.
Background
The fan is a universal machine widely used in each department of national economy, and is a driven fluid machine which relies on input mechanical energy to raise gas pressure and discharge gas.
When the centrifugal fan is used, air flow flows in the air chamber and generates friction with the air chamber, which causes high noise, and the noise of the fan has great influence on the surrounding environment and the work and life of people, so that an ultra-low noise centrifugal fan with a multi-stage noise reduction structure is needed to solve the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ultralow noise centrifugal fan with multistage structure of making an uproar of falling to the noise of the fan that proposes in solving above-mentioned background art has very big influence problem to environment and people's work and life on every side.
In order to achieve the above object, the utility model provides a following technical scheme: an ultra-low noise centrifugal fan with a multistage noise reduction structure comprises a centrifugal fan main body, a motor and a centrifugal impeller, wherein the motor is installed at the top end of the centrifugal fan main body, the output end of the motor is connected with the centrifugal impeller, the inner wall of the centrifugal fan main body is abutted to the surface of a silencing bin, soundproof cotton is glued inside the silencing bin, a microporous plate is glued at one end, away from the inner wall of the centrifugal fan main body, of the silencing bin, fixed frames are fixedly connected to two sides of the top end of the centrifugal fan main body, a first rotating rod is installed inside the fixed frames through a bearing, the surface of the first rotating rod is abutted to the inner wall of a limiting rod, a sliding block is fixedly connected to the surface of the limiting rod, the surface, away from the limiting rod, of the first rotating rod is abutted to the surface of a limiting pin, a fixed rotating shaft is installed inside the centrifugal fan main body through a bearing, and a, the surface of the rotating wheel is abutted to the inner wall of the transmission belt, the surface of the transmission belt is abutted to the surface of the second rotating rod, the fixed rotating shaft is far away from one end of the rotating wheel and is fixedly connected with a shutter, and the top end surface of the centrifugal fan main body is abutted to the bottom end surface of the connecting flange.
Preferably, a sliding groove is formed in the centrifugal fan main body, and the sliding groove formed in the centrifugal fan main body and the sliding block form a sliding structure.
Preferably, the inner wall of the limiting rod is provided with an internal thread, the surface of the first rotating rod is provided with an external thread, and the internal thread arranged on the inner wall of the limiting rod is matched with the external thread arranged on the surface of the first rotating rod for use.
Preferably, a through hole is formed in the fixing frame, an inner wall of the through hole is provided with an internal thread, an external thread is arranged on the surface of the limiting pin, and the internal thread arranged on the inner wall of the through hole is matched with the external thread arranged on the surface of the limiting pin for use.
Preferably, the inner wall of the transmission belt is provided with teeth, and the teeth arranged on the surface of the rotating wheel are meshed with the teeth arranged on the inner wall of the transmission belt.
Preferably, the surface of the second rotating rod is provided with an external thread, the surface of the transmission belt is provided with teeth, and the teeth arranged on the surface of the transmission belt are meshed with the external thread arranged on the surface of the second rotating rod
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a be provided with soundproof cotton and micropore board, set up some through-holes through the micropore board surface and can absorb the noise that centrifugal impeller produced, and can make both cooperate in order to reach the effect of further noise reduction through soundproof cotton, through being provided with the shutter, can prevent through the shutter that the foreign matter from when the centrifugal fan main part uses, get into the inside of centrifugal fan main part, can prevent simultaneously that the dust from getting into inside when the centrifugal fan main part does not use, thereby can effectual improvement centrifugal fan main part's life.
1. The device is provided with soundproof cotton and micropore board, when centrifugal impeller produced the noise when rotating, set up some micropores through the micropore board surface and can absorb the noise to soundproof cotton can weaken the noise, thereby through the cooperation of soundproof cotton with the micropore board, can reach the effect of further noise reduction, and can reduce the holistic vibration of plenum when centrifugal fan main part moves through flange.
2. The device is provided with the shutter, can drive the drive belt through rotating the second bull stick and rotate to can drive through the drive belt and rotate the wheel rotation, thereby can make the shutter rotate, prevent that the centrifugal fan main part from when using, the foreign matter gets into the inside of centrifugal fan main part, can prevent simultaneously that the dust from piling up in the inside of centrifugal fan main part when the centrifugal fan main part does not use, thereby can effectual improvement centrifugal fan main part's life.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic sectional view of the front view of the structure of the present invention;
FIG. 2 is a schematic front sectional view of the structure of the soundproof cotton and the microporous plate of the present invention;
FIG. 3 is a schematic top sectional view of the structure of the present invention;
FIG. 4 is a schematic side view of the structure of the rotating wheel and the driving belt according to the present invention;
fig. 5 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention;
fig. 6 is a schematic top view of the structure of the present invention.
In the figure: 1. a centrifugal fan main body; 2. a motor; 3. a centrifugal impeller; 4. a silencing bin; 5. sound insulation cotton; 6. a microporous plate; 7. a limiting rod; 8. a slider; 9. a first rotating lever; 10. a fixing frame; 11. a spacing pin; 12. fixing the rotating shaft; 13. a rotating wheel; 14. a transmission belt; 15. a second rotating rod; 16. a blind window; 17. and connecting the flanges.
The specific implementation mode is as follows:
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. 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.
Referring to fig. 1-6, the present invention provides an embodiment: an ultra-low noise centrifugal fan with a multistage noise reduction structure comprises a centrifugal fan main body 1, a motor 2 and a centrifugal impeller 3, wherein the motor 2 is installed at the top end of the centrifugal fan main body 1, the output end of the motor 2 is connected with the centrifugal impeller 3, the inner wall of the centrifugal fan main body 1 is abutted to the surface of a silencing bin 4, soundproof cotton 5 is glued inside the silencing bin 4, a microporous plate 6 is glued at one end, away from the inner wall of the centrifugal fan main body 1, of the silencing bin 4, the microporous plate 6 penetrates through a microporous plate with the diameter smaller than or equal to one millimeter on a thin plate with the thickness smaller than one millimeter, the perforation rate is one percent to five percent, a certain thickness air layer is reserved at the rear part, the layer is not filled with any sound absorption material, thus, a microperforated panel is formed, fixed frames 10 are fixedly connected to two sides of the top end of the centrifugal fan main body 1, and, the surface of first bull stick 9 is inconsistent with the inner wall of gag lever post 7, the internal thread has been seted up to the inner wall of gag lever post 7, the external screw thread that the surface of first bull stick 9 set up, the internal thread that the inner wall of gag lever post 7 set up and the external screw thread that first bull stick 9 surface set up cooperate and use, the internal thread that sets up through the inner wall of gag lever post 7, can be when first bull stick 9 rotates, make gag lever post 7 remove at its surface, and the fixed surface of gag lever post 7 is connected with slider 8, the spout has been seted up to centrifugal fan main part 1's inside, and the inside spout of seting up of centrifugal fan main part 1 constitutes the slidingtype structure with slider 8, slide in centrifugal fan main part 1 inside through slider 8, can play spacing.
The surface of one end of the first rotating rod 9, which is far away from the limiting rod 7, is abutted against the surface of the limiting pin 11, a through hole is formed in the fixing frame 10, an inner wall of the through hole is provided with an internal thread, an external thread is arranged on the surface of the limiting pin 11, the internal thread arranged on the inner wall of the through hole is matched with the external thread arranged on the surface of the limiting pin 11 for use, through the external thread arranged on the surface of the limiting pin 11, the limiting pin 11 can move in the fixing frame 10 when the limiting pin 11 is rotated, so that the effect of limiting the first rotating rod 9 can be achieved, a fixed rotating shaft 12 is arranged in the centrifugal fan main body 1 through a bearing, a rotating wheel 13 is sleeved on the surface of the fixed rotating shaft 12, the surface of the rotating wheel 13 is abutted against the inner wall of the driving belt 14, teeth are arranged on the inner wall of the driving belt 14, the teeth arranged on the surface of the, when the transmission belt 14 rotates, the transmission belt 14 drives the plurality of groups of rotating wheels 13 to rotate simultaneously, the surface of the transmission belt 14 is abutted against the surface of the second rotating rod 15, the surface of the second rotating rod 15 is provided with external threads, the surface of the transmission belt 14 is provided with teeth, and the teeth arranged on the surface of the transmission belt 14 are engaged with the external threads arranged on the surface of the second rotating rod 15, and through the external threads arranged on the surface of the second rotating rod 15, when the second rotating rod 15 rotates, the driving belt 14 is driven to rotate, a blind 16 is fixedly connected to one end of the fixed rotating shaft 12 far away from the rotating wheel 13, the top end surface of the centrifugal fan main body 1 is abutted against the bottom end surface of the connecting flange 17, the connecting flange 17 adopts a flanging mode to increase the strength, and angle irons are welded on the periphery inside the connecting flange 17 to strengthen the overall structural strength, so that the overall vibration of the air chamber when the centrifugal fan main body 1 runs is reduced.
The working principle is as follows: when the silencer is used, when the centrifugal fan main body 1 generates noise in use, according to the attached drawings 1, 2, 3, 5 and 6, the noise can be absorbed through the micropores formed in the surface of the microporous plate 6, and the noise can be further eliminated through the soundproof cotton 5, when the silencer bin 4 needs to be replaced, the limiting pin 11 can be far away from the surface of the first rotating rod 9 by rotating the limiting pin 11, at the moment, the first rotating rod 9 is rotated, the limiting rod 7 can move on the surface of the limiting rod 7, when the limiting rod 7 is contracted into the inside of the centrifugal fan main body 1, the whole silencer bin 4 can be taken out from the inside of the centrifugal fan main body 1, when the silencer bin 4 needs to be installed, the silencer bin 4 is inserted into the inside of the centrifugal fan main body 1, the limiting rod 7 can be pushed to extend out of the inside of the centrifugal fan main body 1 by rotating the first rotating rod 9, and is abutted against the surface of the first rotating pin 11, can play the role of limiting the first rotating rod 9, thereby completing the installation of the silencing bin 4, when the centrifugal fan main body 1 needs to be used, referring to fig. 1, 3 and 4, the driving belt 14 is rotated by rotating the second rotating rod 15, the rotating wheel 13 is rotated by the rotation of the driving belt 14, so that the rotating wheel 13 can drive the fixed rotating shaft 12 to rotate, at this time, the opening and closing of the louver 16 can be controlled through the fixed rotating shaft 12, when the centrifugal fan main body 1 is in use, by unfolding the louver 16, it is possible to prevent foreign matters from entering the inside of the centrifugal fan main body 1, and when the centrifugal fan main body 1 is not in use, by closing the louver 16, it is possible to prevent dust from entering the inside of the centrifugal fan main body 1, thereby can improve the holistic life of centrifugal fan main part 1, do above the utility model discloses a whole theory of operation.
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.
Claims (6)
1. The utility model provides an ultra-low noise centrifugal fan with multistage structure of making an uproar that falls, includes centrifugal fan main part (1), motor (2) and centrifugal impeller (3), its characterized in that: the motor (2) is installed on the top end of the centrifugal fan main body (1), the output end of the motor (2) is connected with a centrifugal impeller (3), the inner wall of the centrifugal fan main body (1) is inconsistent with the surface of the silencing bin (4), the silencing bin (4) is glued with soundproof cotton (5), the silencing bin (4) is glued with a microporous plate (6) at one end far away from the inner wall of the centrifugal fan main body (1), fixed frames (10) are fixedly connected with the two sides of the top end of the centrifugal fan main body (1), a first rotating rod (9) is installed in the fixed frames (10) through a bearing, the surface of the first rotating rod (9) is inconsistent with the inner wall of the limiting rod (7), a sliding block (8) is fixedly connected with the surface of the limiting rod (7), the surface of one end far away from the limiting rod (7) of the first rotating rod (9) is inconsistent with the surface of the limiting pin (11), fixed rotating shaft (12) are installed through the bearing in the inside of centrifugal fan main part (1), and the surface of fixed rotating shaft (12) has cup jointed and has rotated wheel (13), the surface that rotates wheel (13) offsets with the inner wall of drive belt (14), and the surface of drive belt (14) offsets with the surface of second bull stick (15), the one end fixedly connected with shutter (16) of rotating wheel (13) are kept away from in fixed rotating shaft (12), the top surface of centrifugal fan main part (1) offsets with the bottom surface of flange (17).
2. The ultra-low noise centrifugal fan with the multi-stage noise reduction structure according to claim 1, wherein: the centrifugal fan is characterized in that a sliding groove is formed in the centrifugal fan main body (1), and the sliding groove formed in the centrifugal fan main body (1) and the sliding block (8) form a sliding type structure.
3. The ultra-low noise centrifugal fan with the multi-stage noise reduction structure according to claim 1, wherein: the inner wall of the limiting rod (7) is provided with an internal thread, the surface of the first rotating rod (9) is provided with an external thread, and the internal thread arranged on the inner wall of the limiting rod (7) is matched with the external thread arranged on the surface of the first rotating rod (9) for use.
4. The ultra-low noise centrifugal fan with the multi-stage noise reduction structure according to claim 1, wherein: the through-hole has been seted up to the inside of fixed frame (10), and the inner wall of through-hole is provided with the internal thread, the external screw thread that the surface of spacer pin (11) set up, the internal thread that the through-hole inner wall set up cooperatees with the external screw thread that spacer pin (11) surface set up and uses.
5. The ultra-low noise centrifugal fan with the multi-stage noise reduction structure according to claim 1, wherein: the inner wall of the transmission belt (14) is provided with teeth, and the teeth arranged on the surface of the rotating wheel (13) are meshed with the teeth arranged on the inner wall of the transmission belt (14).
6. The ultra-low noise centrifugal fan with the multi-stage noise reduction structure according to claim 1, wherein: the surface of the second rotating rod (15) is provided with external threads, the surface of the transmission belt (14) is provided with teeth, and the teeth arranged on the surface of the transmission belt (14) are meshed with the external threads arranged on the surface of the second rotating rod (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020555691.2U CN212003666U (en) | 2020-04-15 | 2020-04-15 | Ultralow noise centrifugal fan with multistage noise reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020555691.2U CN212003666U (en) | 2020-04-15 | 2020-04-15 | Ultralow noise centrifugal fan with multistage noise reduction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212003666U true CN212003666U (en) | 2020-11-24 |
Family
ID=73414329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020555691.2U Active CN212003666U (en) | 2020-04-15 | 2020-04-15 | Ultralow noise centrifugal fan with multistage noise reduction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212003666U (en) |
-
2020
- 2020-04-15 CN CN202020555691.2U patent/CN212003666U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210832414U (en) | Be used for building green energy-conserving ventilation unit | |
| CN104006519A (en) | Integrated air guiding mechanism, air port device and ducted type air conditioner | |
| CN212003666U (en) | Ultralow noise centrifugal fan with multistage noise reduction structure | |
| CN209354408U (en) | A kind of axis is wandered about as a refugee heart composite blower | |
| CN216554583U (en) | Centrifugal fan hub with noise reduction mechanism | |
| CN104896713A (en) | Noise reduction component of air conditioner and air conditioner | |
| CN218509759U (en) | Multi-wing centrifugal fan | |
| CN212838631U (en) | Axial fan that makes an uproar falls in damping | |
| CN203928332U (en) | A kind of monoblock type wind guiding mechanism, tuyere device and air-cooled ducted air conditioner | |
| CN209539660U (en) | A kind of low-noise pipeline fan casing | |
| CN107013486A (en) | A kind of tubular wine wheel of blade linkage | |
| CN205805967U (en) | A kind of belt shaft streaming low noise roof ventilator | |
| CN218542726U (en) | Energy-saving noise-reducing centrifugal fan convenient to disassemble | |
| CN220001643U (en) | Noise reduction and silence structure for dust collector | |
| CN109140655A (en) | A kind of new blower of low noise | |
| CN210565189U (en) | Low-noise axial flow fan | |
| CN220958759U (en) | Architectural design ventilation structure | |
| CN220648752U (en) | Air-out structure of freezer | |
| CN218563932U (en) | Low-noise axial flow fan with constant flow and wind speed | |
| CN218718692U (en) | Precise main reducer drive bevel gear of lightweight | |
| CN208546097U (en) | A kind of noise reduction burglary-resisting window for building | |
| CN216045222U (en) | Speed-increasing shaft gear for large centrifugal compressor with good noise reduction effect | |
| CN108979999A (en) | A kind of gas compressor | |
| CN219294118U (en) | Cutting device with noise reduction function for interior decoration | |
| CN209470325U (en) | A kind of new blower of low noise |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |