CN212130875U - High-pressure centrifugal fan impeller - Google Patents
High-pressure centrifugal fan impeller Download PDFInfo
- Publication number
- CN212130875U CN212130875U CN202020587260.4U CN202020587260U CN212130875U CN 212130875 U CN212130875 U CN 212130875U CN 202020587260 U CN202020587260 U CN 202020587260U CN 212130875 U CN212130875 U CN 212130875U
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- impeller
- head
- blade
- centrifugal fan
- pressure centrifugal
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Abstract
The utility model relates to a high-pressure centrifugal fan impeller, including the impeller head that is used for impeller head and the symmetric distribution that the transmission shaft passed to coil both sides in the impeller, all be equipped with a plurality of blades that are circumference evenly distributed between impeller head and the impeller head, the width of blade is coiled to the impeller head and is increased gradually by the impeller. The utility model discloses a high-pressure centrifugal fan impeller structural design is reasonable, has designed the blade that blade width increases gradually from the impeller head to the impeller head, makes the impeller descend gradually to the head work ability along the head, and impeller export air current velocity distribution tends to all like this, reduces the secondary flow loss, has improved the efficiency of fan, has reduced the noise, has improved the bulk strength of impeller simultaneously.
Description
Technical Field
The utility model relates to a high-pressure centrifugal fan impeller.
Background
The existing kitchen oil fume exhaust impeller mainly uses the structure of straight blades with equal chord length, namely, the inlet end and the outlet end of each blade are parallel to the axis of the impeller, and the cross sections of the blades have the same size and shape. And the strength of the blade is low, and the blade is easy to break. Because the airflow speeds at the inlet of the blades are different, the capacities of acting work along the blades are different, so that the axial flow distribution of the outlet speed of the impeller is uneven, the outlet speed at the side of the impeller disc is lower, the speed at the side of the wheel cover is higher, after the airflow leaves the impeller, secondary flow is formed on the cross section of the volute, a pair of vortex symmetrical with the disc is formed during double air inlet, and a vortex is formed during single air inlet. This secondary flow vortex is gradually intensified in the volute, causing flow losses and aerodynamic noise, reducing the efficiency of the fan. Through experiments, the air flow has great difference in the flow of the front disk and the middle and rear disks of the blade, the air flow mainly flows axially in the front disk of the impeller, the air flow mainly flows radially in the middle and rear disks, and most of the air flow is conveyed to the volute casing through the middle and rear disks of the impeller. Wherein, the impeller front disc mainly plays the effect of air supply to well back dish, and the effective air outlet channel of impeller is at well back dish. Therefore, through the reasonable design of the axial shape of the blades, the air supply quantity of the blades can be improved, the effective channel width can be increased, and the efficiency of the fan is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a high-pressure centrifugal fan impeller.
The utility model discloses a high-pressure centrifugal fan impeller, including the impeller head that is used for impeller head and symmetric distribution that the transmission shaft passed to coil both sides in the impeller, all be equipped with a plurality of blades that are circumference evenly distributed between impeller head and the impeller head, the width of blade is coiled to the impeller head and is increased gradually by the impeller.
The utility model discloses a high-pressure centrifugal fan impeller, the long limit that is close to the transmission shaft on the blade is the slope form, and the contained angle between the axis of long limit and transmission shaft is 6 degrees.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a high-pressure centrifugal fan impeller structural design is reasonable, has designed the blade that blade width increases gradually from the impeller head to the impeller head, makes the impeller descend gradually to the head work ability along the head, and impeller export air current velocity distribution tends to all like this, reduces the secondary flow loss, has improved the efficiency of fan, has reduced the noise, has improved the bulk strength of impeller simultaneously.
Drawings
Fig. 1 is one of schematic structural diagrams of a high-pressure centrifugal fan impeller according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of the high-pressure centrifugal fan impeller according to the embodiment of the present invention.
In the figure:
1. a drive shaft; 2. an impeller middle disc; 3. an impeller front disc; 4. a blade; 5. and a long side.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-2, a high-pressure centrifugal fan impeller comprises an impeller center disk 2 through which a transmission shaft 1 passes and impeller front disks 3 symmetrically distributed on both sides of the impeller center disk 2, wherein a plurality of blades 4 uniformly distributed circumferentially are arranged between the impeller front disks 3 and the impeller center disk 2, and the width of each blade 4 is gradually increased from the impeller front disks 3 to the impeller center disk 2.
The utility model discloses a high-pressure centrifugal fan impeller, the long limit 5 that is close to transmission shaft 1 on blade 4 is the slope form, and the contained angle between the axis of long limit 5 and transmission shaft 1 is 6 degrees.
The utility model discloses a high-pressure centrifugal fan impeller structural design is reasonable, has designed the blade that blade width increases gradually from the impeller head to the impeller head, makes the impeller descend gradually to the head work ability along the head, and impeller export air current velocity distribution tends to all like this, reduces the secondary flow loss, has improved the efficiency of fan, has reduced the noise, has improved the bulk strength of impeller simultaneously.
The utility model discloses a high pressure centrifugal fan impeller reduces runner flow loss and boundary flow separation in order to solve the inhomogeneous problem of current fan impeller exit velocity distribution, and is more to the air current acting, increases the fan static pressure, improves fan efficiency, noise reduction.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The utility model provides a high-pressure centrifugal fan impeller which characterized in that: the novel impeller is characterized by comprising an impeller middle disc (2) used for a transmission shaft (1) to penetrate and impeller front discs (3) symmetrically distributed on two sides of the impeller middle disc (2), wherein a plurality of blades (4) which are uniformly distributed circumferentially are arranged between the impeller front discs (3) and the impeller middle disc (2), and the width of each blade (4) is gradually increased from the impeller front disc (3) to the impeller middle disc (2).
2. The high-pressure centrifugal fan impeller of claim 1, wherein: long limit (5) that are close to transmission shaft (1) on blade (4) are the slope form, and the contained angle between the axis of long limit (5) and transmission shaft (1) is 6 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020587260.4U CN212130875U (en) | 2020-04-17 | 2020-04-17 | High-pressure centrifugal fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020587260.4U CN212130875U (en) | 2020-04-17 | 2020-04-17 | High-pressure centrifugal fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212130875U true CN212130875U (en) | 2020-12-11 |
Family
ID=73689210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020587260.4U Expired - Fee Related CN212130875U (en) | 2020-04-17 | 2020-04-17 | High-pressure centrifugal fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212130875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107898A (en) * | 2021-04-30 | 2021-07-13 | 广东美的厨房电器制造有限公司 | Blade for centrifugal fan, impeller, centrifugal fan and household appliance |
-
2020
- 2020-04-17 CN CN202020587260.4U patent/CN212130875U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113107898A (en) * | 2021-04-30 | 2021-07-13 | 广东美的厨房电器制造有限公司 | Blade for centrifugal fan, impeller, centrifugal fan and household appliance |
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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: 20201211 |