CN215566749U - High stationarity centrifugal fan - Google Patents
High stationarity centrifugal fan Download PDFInfo
- Publication number
- CN215566749U CN215566749U CN202120838298.9U CN202120838298U CN215566749U CN 215566749 U CN215566749 U CN 215566749U CN 202120838298 U CN202120838298 U CN 202120838298U CN 215566749 U CN215566749 U CN 215566749U
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- Prior art keywords
- volute
- bearing
- fan
- base
- roller bearing
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- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 29
- 238000009792 diffusion process Methods 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 11
- 241000883990 Flabellum Species 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a high-stability centrifugal fan which comprises a base assembly, a volute, fan blades and a fan motor, wherein an air inlet of the volute faces forwards, an air outlet of the volute faces towards the left side, the base assembly comprises a bottom plate, a damping plate and a base, a bearing support is arranged at the top of the base and provided with a bearing hole, a cylindrical roller bearing is arranged inside the front end of the bearing hole, a tapered roller bearing is arranged inside the rear end of the bearing hole, bearing sealing plates are arranged at the front end and the rear end of the bearing hole, the fan motor is arranged on the rear side of the base, a main shaft of the fan motor is provided with a transmission shaft, the front end of the transmission shaft is connected with the fan blades, and the damping plate right below the volute is in threaded connection with a supporting screw rod. According to the utility model, the bearing support is provided with the cylindrical roller bearing and the tapered roller bearing, so that the concentricity of the transmission shaft is higher during rotation, vibration is not easy to generate, the volute is respectively connected with the damping plate and the base, the vibration of the volute is effectively reduced, and the support of the volute is better realized by the support screw.
Description
Technical Field
The utility model relates to a centrifugal fan, in particular to a high-stability centrifugal fan.
Background
Centrifugal fan is the ventilation equipment who uses commonly with electric energy conversion for wind energy, its mainly general high-speed rotation through the flabellum throws away the air, realize the air flow, because the flabellum is rotatory at the during operation high speed, therefore the centrifugal force that the flabellum produced is great, can lead to the vibration aggravation under the effect of centrifugal force when the flabellum appears slightly vibrating, especially centrifugal fan vibration when the transmission shaft of flabellum is eccentric increases, simultaneously the air current in the spiral case very easily causes centrifugal fan's vibration when unusual disturbance appears, the air current is unstable.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a high-stability centrifugal fan.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a high-stability centrifugal fan comprises a base assembly, a volute arranged on the base assembly, fan blades arranged in the volute and a fan motor arranged on the base assembly, wherein an air inlet of the volute faces forwards, an air outlet of the volute faces towards the left side, the base assembly comprises a bottom plate, a damping plate arranged above the bottom plate and a base arranged at the top of the damping plate, a bearing support is arranged at the top of the base and provided with a bearing hole extending leftwards and rightwards, a cylindrical roller bearing is arranged inside the front end of the bearing hole, a tapered roller bearing is arranged inside the rear end of the bearing hole, bearing sealing plates are arranged at the front end and the rear end of the bearing hole, the length of the bearing hole is larger than the sum of the widths of the tapered roller bearing and the cylindrical roller bearing, namely a cavity is arranged between the cylindrical roller bearing and the tapered roller bearing, the fan motor is arranged on the rear side of the base, a transmission shaft is arranged on a main shaft of the fan motor, the transmission shaft penetrates through the bearing hole from front to back, the front end of the transmission shaft is connected with the fan blades, the volute is respectively connected with the damping plate and the base, a supporting screw rod with a vertical axis is connected to the damping plate through threads right below the volute, and the top of the supporting screw rod is connected with the bottom of the volute in a rotating mode.
Make the transmission shaft higher when rotating through set up cylindrical roller bearing and tapered roller bearing on bearing support in the above-mentioned design, be difficult for producing the vibration, the axial of transmission shaft and radial support are all better simultaneously, and the spiral case is connected with shock attenuation board and pedestal respectively, has effectively reduced the vibration of spiral case, the holding power to the spiral case can be adjusted to the supporting screw, and better realization is more steady to the support of spiral case, the whole operation of fan.
As a further improvement of the design, the center of the fan blade is provided with a flow guiding cone extending forwards. The drainage cone is convenient for airflow to stably enter the fan blade, reduces the turbulent flow and improves the running smoothness of the fan blade.
As a further improvement of the design, the top of the base is provided with a cooling oil tank, the top of the cavity is communicated with the top of the cooling oil tank, and the bottom of the cavity is communicated with the bottom of the cavity. The cooling oil tank can provide good lubrication for the bearing in the bearing support, reduces the temperature of lubricating oil, and then reduces the wearing and tearing of axis of rotation and bearing, promotes the axis of rotation ride comfort.
As a further improvement of the design, the bottom of the cooling oil tank is provided with radial cooling fins, and the bottom of the cooling oil tank is provided with a cooling fan. The cooling fan and the cooling fins are convenient for cooling the lubricating oil.
As a further improvement of the design, the circumferential surfaces of the fan blades and the cavity between the inner walls of the volute are diffusion channels, the diffusion channels and the bottom connection part of the volute air outlet are cambered surfaces, the inner walls of the cambered surfaces are provided with adjusting blocks, the adjusting blocks are attached to the cambered surfaces, locking bolts are connected to the adjusting blocks in a threaded mode, the volute is provided with an avoiding hole extending along the cambered surfaces, the locking bolts penetrate through the avoiding hole, and the cross section of each adjusting block is integrally triangular. The adjusting block with the adjustable inclination angle is convenient for adjusting the gap between the diffusion channel and the volute air outlet, effectively prevents air channeling, prevents fan blade vibration and improves the efficiency of the fan.
The utility model has the beneficial effects that: according to the utility model, the cylindrical roller bearing and the tapered roller bearing are arranged on the bearing support, so that the concentricity of the transmission shaft is higher during rotation, vibration is not easy to generate, the axial and radial support of the transmission shaft is better, the volute is respectively connected with the damping plate and the base, the vibration of the volute is effectively reduced, the support force of the support screw on the volute can be adjusted, the support on the volute is better realized, and the whole operation of the fan is more stable.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a schematic side view of the present invention.
In the figure, 1, a bottom plate, 2, a damping plate, 3, fan blades, 4, a diffusion channel, 5, a volute, 6, a fan motor, 7, a base, 8, a bearing support, 9, a transmission shaft, 10, a bearing hole, 11, a tapered roller bearing, 12, a cylindrical roller bearing, 13, a bearing sealing plate, 14, a supporting screw rod, 15, a flow guide cone, 16, a cooling oil tank, 17, a cooling fan, 18, a cooling fin, 19, an adjusting block, 20, a relief hole and 21 are provided with locking bolts.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
Example (b): a high-stability centrifugal fan comprises a base assembly, a volute 5 arranged on the base assembly, fan blades 3 arranged in the volute 5 and a fan motor 6 arranged on the base assembly, wherein an air inlet of the volute 5 faces forwards, an air outlet of the volute 5 faces towards the left side, the base assembly comprises a bottom plate 1, a damping plate 2 arranged above the bottom plate 1 and a base 7 arranged at the top of the damping plate 2, a bearing support 8 is arranged at the top of the base 7, the bearing support 8 is provided with a bearing hole 10 extending leftwards and rightwards, a cylindrical roller bearing 12 is arranged in the front end of the bearing hole 10, a tapered roller bearing 11 is arranged in the rear end of the bearing hole, bearing sealing plates 13 are arranged at the front end and the rear end of the bearing hole 10, the length of the bearing hole 10 is greater than the sum of the widths of the tapered roller bearing 11 and the cylindrical roller bearing 12, namely cylindrical roller bearing 12 with be equipped with the cavity between the tapered roller bearing 11, fan motor 6 set up in 7 rear sides of base, be equipped with transmission shaft 9 on fan motor 6's the main shaft, run through around transmission shaft 9 dead eye 10, the 9 front ends of transmission shaft are connected flabellum 3, spiral case 5 respectively with shock attenuation board 2 base 7 is connected, spiral case 5 is under the threaded connection has the vertical supporting screw 14 of axis on the shock attenuation board 2, supporting screw 14 top with spiral case 5 bottom is rotated and is connected.
Make transmission shaft 9 when rotating the concentricity higher through set up cylindrical roller bearing 12 and tapered roller bearing 11 on bearing support 8 in the above-mentioned design, be difficult for producing the vibration, transmission shaft 9's axial and radial support are all better simultaneously, and spiral case 5 is connected with damper plate 2 and base 7 respectively, has effectively reduced spiral case 5's vibration, support screw 14 can adjust the holding power to spiral case 5, and better realization is more steady to spiral case 5's support, the whole operation of fan.
As a further improvement of the design, the center of the fan blade 3 is provided with a drainage cone 15 extending forwards. The flow guiding cone 15 is convenient for air flow to stably enter the fan blade 3, so that turbulence is reduced, and the running smoothness of the fan blade 3 is improved.
As a further improvement of the design, the top of the base 7 is provided with a cooling oil tank 16, the top of the cavity is communicated with the top of the cooling oil tank 16, and the bottom of the cavity is communicated with the bottom of the cavity. The cooling oil tank 16 can provide good lubrication for the bearing in the bearing support 8, reduce the temperature of lubricating oil, further reduce the wearing and tearing of rotating shaft and bearing, and promote the running smoothness of the rotating shaft.
As a further improvement of the design, the bottom of the cooling oil tank 16 is provided with radial cooling fins 18, and the bottom of the cooling oil tank 16 is provided with a cooling fan 17. The cooling fan 17 and the cooling fins 18 facilitate cooling of the lubricating oil.
As a further improvement of this design, flabellum 3 global with cavity between the 5 inner walls of spiral case is diffusion passageway 4, diffusion passageway 4 with the bottom junction of 5 air outlets of spiral case is the cambered surface, the cambered surface inner wall is equipped with adjusting block 19, adjusting block 19 with the cambered surface laminating, threaded connection has locking bolt 21 on the adjusting block 19, be equipped with on the spiral case 5 and follow the hole 20 of dodging that the cambered surface extends, locking bolt 21 runs through hole 20 of dodging, adjusting block 19 cross section is whole for triangle-shaped. The adjusting block 19 with adjustable inclination angle is convenient for adjusting the gap between the diffusion channel 4 and the air outlet of the volute 5, effectively prevents air channeling, prevents the fan blades 3 from vibrating and improves the efficiency of the fan.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A high-stability centrifugal fan comprises a base assembly, a volute arranged on the base assembly, fan blades arranged in the volute and a fan motor arranged on the base assembly, and is characterized in that an air inlet of the volute faces forwards, an air outlet of the volute faces towards the left side, the base assembly comprises a bottom plate, a damping plate arranged above the bottom plate and a base arranged at the top of the damping plate, a bearing support is arranged at the top of the base and provided with a bearing hole extending leftwards and rightwards, a cylindrical roller bearing is arranged inside the front end of the bearing hole, a tapered roller bearing is arranged inside the rear end of the bearing hole, bearing sealing plates are arranged at the front end and the rear end of the bearing hole, the length of the bearing hole is larger than the sum of the widths of the tapered roller bearing and the cylindrical roller bearing, namely a cavity is arranged between the cylindrical roller bearing and the tapered roller bearing, the fan motor is arranged on the rear side of the base, a transmission shaft is arranged on a main shaft of the fan motor, the transmission shaft penetrates through the bearing hole from front to back, the front end of the transmission shaft is connected with the fan blades, the volute is respectively connected with the damping plate and the base, a supporting screw rod with a vertical axis is connected to the damping plate through threads right below the volute, and the top of the supporting screw rod is connected with the bottom of the volute in a rotating mode.
2. A highly stable centrifugal fan as claimed in claim 1, wherein said fan blades are provided with a forwardly extending flow guide cone at the center thereof.
3. A highly stable centrifugal fan as set forth in claim 1, wherein said base has a cooling oil tank at a top portion thereof, said cavity top portion being in communication with said cooling oil tank top portion, and said cavity bottom portion being in communication with said cavity bottom portion.
4. A highly stable centrifugal fan as set forth in claim 3, wherein said cooling oil tank is provided at the bottom thereof with radial cooling fins, and said cooling oil tank is provided at the bottom thereof with a cooling fan.
5. The high-stability centrifugal fan according to claim 1, wherein a cavity between the circumferential surface of the fan blade and the inner wall of the volute is a diffusion channel, a joint of the diffusion channel and the bottom of the volute air outlet is an arc surface, the inner wall of the arc surface is provided with an adjusting block, the adjusting block is attached to the arc surface, the adjusting block is in threaded connection with a locking bolt, the volute is provided with an avoiding hole extending along the arc surface, the locking bolt penetrates through the avoiding hole, and the cross section of the adjusting block is integrally triangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120838298.9U CN215566749U (en) | 2021-04-23 | 2021-04-23 | High stationarity centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120838298.9U CN215566749U (en) | 2021-04-23 | 2021-04-23 | High stationarity centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215566749U true CN215566749U (en) | 2022-01-18 |
Family
ID=79856983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120838298.9U Expired - Fee Related CN215566749U (en) | 2021-04-23 | 2021-04-23 | High stationarity centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215566749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759549A (en) * | 2023-12-29 | 2024-03-26 | 广东鑫风风机有限公司 | Noise reduction type centrifugal fan |
-
2021
- 2021-04-23 CN CN202120838298.9U patent/CN215566749U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117759549A (en) * | 2023-12-29 | 2024-03-26 | 广东鑫风风机有限公司 | Noise reduction type centrifugal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220118 |