CN219974898U - Centrifugal fan impeller - Google Patents
Centrifugal fan impeller Download PDFInfo
- Publication number
- CN219974898U CN219974898U CN202321446100.8U CN202321446100U CN219974898U CN 219974898 U CN219974898 U CN 219974898U CN 202321446100 U CN202321446100 U CN 202321446100U CN 219974898 U CN219974898 U CN 219974898U
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- China
- Prior art keywords
- impeller
- fan
- disc
- centrifugal
- centrifugal fan
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- 238000009434 installation Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the field of centrifugal fans, and particularly discloses a centrifugal fan impeller which comprises a front fan disk and a rear fan disk, wherein a second impeller is arranged between the front fan disk and the rear fan disk in an array manner, a first impeller is arranged between the front fan disk and the rear fan disk in an array manner at the interval of the second impeller, an impeller notch is formed in one side, close to the center of the front fan disk, of the first impeller, and the length of the first impeller is smaller than that of the second impeller. The length of the first impeller is smaller than that of the second impeller, so that the size of the impeller in the whole centrifugal fan can be distributed, vibration generated when air contacts the first impeller and the second impeller is reduced, the purpose of noise reduction is achieved, the impeller notch can change the blocking coefficient of air flow, superposition of noise in the middle of each blade on the same frequency is reduced, and the purpose of noise reduction can be achieved again.
Description
Technical Field
The utility model relates to the field of centrifugal fans, in particular to a centrifugal fan impeller.
Background
The centrifugal wind wheel is a wind wheel which utilizes centrifugal force (depending on rotating speed and outer diameter) to apply work to improve air pressure, and the centrifugal fan wind wheel can be divided into a forward tilting wind wheel, a radial wind wheel and a backward tilting wind wheel according to the blade angle of the impeller, and can divide the centrifugal impeller into three types of forward tilting wind wheels, radial wind wheels and backward tilting wind wheels according to the blade angle of the impeller, and can divide the impeller into a multi-wing impeller and a split impeller according to the impeller structure, and can be divided into an outer rotor impeller and an inner rotor impeller according to the installation requirement of a motor.
However, the impellers of the inner protecting part of the conventional centrifugal fan have the same size, and the vibration superposition can occur when the vibration frequencies of the noise on the same impellers are consistent, so that the noise is larger when the centrifugal fan is used.
Disclosure of Invention
In view of the shortcomings of the prior art, the present utility model provides a centrifugal fan impeller that addresses the problems noted in the background above.
The utility model provides the following technical scheme: the utility model provides a centrifugal fan impeller, includes fan front disc and fan back disc, the fan front disc reaches array installation has the second impeller between the fan back disc, the interval department of second impeller is located the fan front disc reaches array installation has first impeller between the fan back disc, first impeller is close to fan front disc's centre of a circle one side has seted up the impeller incision, the length dimension of first impeller is less than the length dimension of second impeller.
As still further aspects of the utility model: the upper surface of fan back dish is installed the mount pad, the mounting hole has been seted up to the inside array of mount pad.
As still further aspects of the utility model: the connection part of the first impeller, the second impeller and the fan rear disc is provided with a blade root fillet, and an air duct is arranged between the first impeller and the second impeller.
As still further aspects of the utility model: the first impeller and the second impeller are fixedly connected with the fan rear disc.
As still further aspects of the utility model: the mounting seat and the impeller cover are internally provided with through holes.
As still further aspects of the utility model: the impeller cover is fixedly connected with the front fan disc.
As still further aspects of the utility model: the internal array of mount pad installs threaded connection hole.
As still further aspects of the utility model: the front fan disc is fixedly connected with the rear fan disc.
Compared with the prior art, the utility model has the beneficial effects that:
1. the length of the first impeller is smaller than that of the second impeller, so that resistance of air entering the air duct can be changed, vibration generated when the air contacts the first impeller and the second impeller is reduced, and the purpose of noise reduction is achieved.
2. The impeller notch formed at the end part of the first impeller can change the blocking coefficient of the air flow, so that the superposition of the noise in the middle of each blade on the same frequency is reduced, and the purpose of noise reduction can be achieved again.
Drawings
FIG. 1 is a schematic view of a centrifugal fan impeller;
FIG. 2 is a side view of a fan wheel of a centrifugal fan wheel;
fig. 3 is a partial cross-sectional view of a fan wheel of a centrifugal fan wheel.
In the figure: 1. a fan front plate; 2. a fan rear tray; 3. a mounting base; 4. a first impeller; 5. impeller notch; 6. a second impeller; 7. an air duct; 8. a mounting hole; 401. and blade root fillets.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-3, this embodiment provides a centrifugal fan impeller, including fan front disc 1 and fan back disc 2, fan front disc 1 and fan back disc 2 fixed connection, array installation has second impeller 6 between fan front disc 1 and the fan back disc 2, the interval department of second impeller 6 is located array installation has first impeller 4 between fan front disc 1 and the fan back disc 2, impeller incision 5 has been seted up to the centre of a circle one side that is close to fan front disc 1 of first impeller 4, the length dimension of first impeller 4 is less than the length dimension of second impeller 6, first impeller 4 and second impeller 6 all with fan back disc 2 fixed connection.
As shown in fig. 2-3, in the present embodiment, the upper surface of the fan rear disc 2 is provided with a mounting seat 3, the inner array of the mounting seat 3 is provided with mounting holes 8, the connection parts of the first impeller 4 and the second impeller 6 and the fan rear disc 2 are provided with blade root fillets 401, and an air duct 7 is arranged between the first impeller 4 and the second impeller 6.
The working principle of the utility model is as follows: the length dimension of the first impeller 4 is smaller than the length dimension of the second impeller 6, and meanwhile, impeller notches 5 are formed in the positions, close to the fan front disc 1, of the side, close to the fan front disc 1, of the circle centers of the fan front disc 1 and the fan rear disc 2, so that resistance of air entering the air duct 7 can be changed, vibration generated when the air contacts the first impeller 4 and the second impeller 6 is reduced, noise reduction is achieved, meanwhile, the blocking coefficient of air flow can be changed due to the impeller notches 5 formed in the end portions of the first impeller 4, superposition of noise in the middle of each blade on the same frequency is reduced, and noise can be reduced again.
It is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, and further, that the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a centrifugal fan impeller, includes fan front disc (1) and fan back disc (2), its characterized in that, fan front disc (1) reaches array installation has second impeller (6) between fan back disc (2), the interval department of second impeller (6) is located fan front disc (1) reaches array installation has first impeller (4) between fan back disc (2), impeller incision (5) have been seted up to first impeller (4) be close to centre of a circle one side of fan front disc (1), the length dimension of first impeller (4) is less than the length dimension of second impeller (6).
2. A centrifugal fan impeller according to claim 1, wherein the upper surface of the fan rear disc (2) is provided with a mounting seat (3).
3. Centrifugal fan impeller according to claim 1, characterized in that the connection of the first impeller (4) and the second impeller (6) with the fan rear disc (2) is provided with a blade root fillet (401), and an air duct (7) is arranged between the first impeller (4) and the second impeller (6).
4. Centrifugal fan impeller according to claim 1, wherein the first impeller (4) and the second impeller (6) are both fixedly connected to the fan rear disc (2).
5. A centrifugal fan impeller according to claim 2, wherein the inner array of mounting seats (3) is provided with mounting holes (8).
6. A centrifugal fan impeller according to claim 5, wherein the inner array of mounting holes (8) is provided with threaded connection holes.
7. Centrifugal fan impeller according to claim 1, wherein the fan front disc (1) is fixedly connected to the fan rear disc (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321446100.8U CN219974898U (en) | 2023-06-08 | 2023-06-08 | Centrifugal fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321446100.8U CN219974898U (en) | 2023-06-08 | 2023-06-08 | Centrifugal fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974898U true CN219974898U (en) | 2023-11-07 |
Family
ID=88594474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321446100.8U Active CN219974898U (en) | 2023-06-08 | 2023-06-08 | Centrifugal fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974898U (en) |
-
2023
- 2023-06-08 CN CN202321446100.8U patent/CN219974898U/en active Active
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