CN217761440U - Low-wind-resistance high-thrust fan impeller - Google Patents
Low-wind-resistance high-thrust fan impeller Download PDFInfo
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- CN217761440U CN217761440U CN202222218438.XU CN202222218438U CN217761440U CN 217761440 U CN217761440 U CN 217761440U CN 202222218438 U CN202222218438 U CN 202222218438U CN 217761440 U CN217761440 U CN 217761440U
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- impeller
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- high thrust
- fan impeller
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Abstract
The utility model provides a low windage high thrust fan impeller, this impeller includes: the hub and evenly distributed a plurality of blades at the hub outer lane. The transverse width of the blade from the blade root to the blade tip becomes gradually larger. The front edge of the blade is positioned at the highest position of the blade and tilts upwards, and the front edge of the blade extends to the rear edge of the blade in a concave curved surface. The blade root angle is greater than the blade tip angle. This fan wheel adopts low windage curved surface design, can effectively reduce the windage that the impeller rotation brought, and then reduces vibration and noise. In addition, the impeller is provided with the rim for strengthening the structural strength of the blades, reducing the vibration amplitude of the blades when the impeller rotates and further effectively reducing noise. In addition, the rim and the sealing ring have certain pressurization effect, so that the effect of high-thrust blowing is realized, and the air supply efficiency is improved.
Description
Technical Field
The utility model relates to an impeller technical field specifically is low windage high thrust fan impeller.
Background
In real production life, the application of the fan is very wide. However, due to the structural design problem of the fan impeller, the thrust of the impeller is insufficient, and even if the high rotating speed is achieved, the air supply effect is still poor. On the other hand, when the impeller rotates, the wind resistance is too large, and high energy consumption and blade vibration are caused by high wind resistance correspondingly. High rotating speed and high wind resistance can also bring high noise, and the noise can influence the quality of production and living environment of people. The vibration of the blades can also cause certain damage to the structure, and the service life of the impeller is shortened. From this, it is understood that the shape of the blade and the structure of the impeller play an important role in the operation effect of the impeller and the air blowing efficiency.
Therefore, there is a need for an impeller with low wind resistance, low vibration, low noise and high blowing efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide low windage big thrust fan impeller to solve prior art fan impeller windage big, vibration strong, the noise just the problem of air supply inefficiency.
The utility model provides a low windage high thrust fan impeller, this impeller includes: the blade assembly comprises a hub and a plurality of blades uniformly distributed on an outer ring of the hub; the transverse cutting width of the blade from the blade root to the blade tip is gradually increased; the front edge of the blade is positioned at the highest position of the blade and tilts upwards, and the front edge of the blade extends to the rear edge of the blade in a concave curved surface manner; the blade root angle is greater than the blade tip angle.
Furthermore, the impeller is also provided with a rim, and the inner wall of the rim is fixedly connected with the blade tip and used for pressurizing the impeller and strengthening the structural strength of the blade.
Further, in an embodiment of the present invention, the rim has a vertical cross section along the axial direction.
In another embodiment, the cross section of the rim along the axial direction is a concave curved surface.
The utility model discloses an among the embodiment, the impeller still has the sealing ring, the sealing ring sets up the air outlet one end of wheel rim for form dynamic seal structure with the cooperation of fan casing.
Furthermore, the cross section of the sealing ring is L-shaped, and the sealing ring and the rim are integrally formed.
In an embodiment of the present invention, the blade root has an inclination angle of 50 ° to 75 °; the inclination angle of the blade tip is 25-40 degrees.
In one embodiment, the blade root is integrally formed with the hub for increasing the structural strength of the blade.
In another embodiment, the blade root is integrally formed with the hub for increasing the structural strength of the blade; the blade tip and the rim are integrally formed and used for improving the structural strength of the blade.
According to the above utility model, the utility model provides a low windage high thrust fan impeller has following benefit: compared with the fan impeller in the prior art, the fan impeller adopts the design of a low wind resistance curved surface, can effectively reduce the wind resistance caused by the rotation of the impeller, and further reduces the vibration and the noise. The design of the peripheral rim of the impeller can strengthen the structural strength of the blades on one hand, reduce the vibration amplitude of the blades when the impeller rotates, and further effectively reduce noise. In addition, the rim and the sealing ring have certain pressurization effect, so that the effect of blowing with high thrust is realized, and the air supply efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification of the invention, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a structural diagram of a first embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 2 is a top view of a single blade of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 3 is a front view of a single blade of the low wind resistance high thrust fan impeller provided by the present invention.
Fig. 4 is a cross-sectional view of a blade root of a low windage high thrust fan impeller provided by the present invention.
Fig. 5 is a cross-sectional view of the blade tip of the low windage high thrust fan impeller provided by the present invention.
Fig. 6 is a top view of a second embodiment of the low wind resistance high thrust fan impeller provided by the present invention.
Fig. 7 is a top view of a third embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 8 is a top view of a fourth embodiment of the fan impeller with low wind resistance and high thrust provided by the present invention.
Fig. 9 is a cross-sectional view of a fifth embodiment of a fan impeller with low wind resistance and high thrust provided by the present invention.
Fig. 10 is a cross-sectional view of a sixth embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 11 is a cross-sectional view of a seventh embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 12 is a cross-sectional view of an eighth embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 13 is a cross-sectional view of a ninth embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 14 is a cross-sectional view of an embodiment ten of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 15 is a cross-sectional view of an eleventh embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 16 is a cross-sectional view of a twelfth embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 17 is a cross-sectional view of a thirteenth embodiment of the low wind resistance high thrust fan impeller provided by the present invention.
Fig. 18 is a cross-sectional view of a fourteenth embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 19 is a cross-sectional view of a fifteenth embodiment of a low wind resistance high thrust fan impeller provided by the present invention.
Fig. 20 is a cross-sectional view of sixteen embodiments of the low wind resistance high thrust fan impeller provided by the present invention.
Description of reference numerals:
1-hub, 2-blade, 3-rim, 4-sealing ring;
21-blade root, 22-blade tip, 23-leading edge, 24-trailing edge.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, which should not be considered limiting of the invention, but rather should be understood to be a more detailed description of certain aspects, features and embodiments of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.
The utility model provides a low windage high thrust fan wheel, as shown in figure 1 for the structure chart of this fan wheel embodiment one. In a particular embodiment, the impeller comprises: a hub 1 and a plurality of blades 2 evenly distributed on the outer ring of the hub 1. The blade root of the blade 2 is fixedly connected with the outer ring of the hub 1. In particular, the blade root 21 in this embodiment is integrally formed with the hub 1 for improving the structural strength of the blade 2.
As shown in fig. 2, the blade 2 has a gradually increasing transverse width from the blade root 21 to the blade tip 22. As shown in fig. 3, the front edge 23 of the blade 2 is located at the highest position of the blade and is tilted upwards, and the front edge 23 of the blade 2 extends to the rear edge 24 of the blade 2 in a concave curved surface.
Further, as shown in fig. 4 and 5, the blade root 21 inclination angle is larger than the blade tip 22 inclination angle.
In the specific embodiment of the present invention, the inclination angle of the blade root 21 is 50 ° to 75 °. Preferably, the blade root 21 has an inclination of 70 °.
The angle of inclination of the blade tip 22 is 25-40 deg.. Preferably, the inclination of the blade tip 22 is 32 °.
In the specific embodiment of the present invention, as shown in the embodiment of fig. 6, the impeller further has a rim 3, and the inner wall of the rim 3 is fixedly connected to the blade tip 22 for pressurizing the impeller and strengthening the structural strength of the blade 2. On one hand, the rim 3 can limit the flowing direction of the airflow, prevent the airflow from diffusing to the periphery when flowing, and improve the efficiency of the impeller to convey the airflow. On the other hand, the rim 3 is fixedly connected with the blade tip 22 of the blade 2, so that the structural strength of the blade tip 22 can be enhanced, the vibration amplitude and frequency of the blade tip 22 during rotation of the impeller are reduced, and further the noise is reduced. In addition, when the impeller rotates, the rim 3 can reduce the deformation amount of the blades 2, and effectively improve the air supply efficiency of the impeller when the rotating speed is high.
In the embodiment shown in fig. 6-8, the section of the rim 3 in the axial direction is a vertical plane. In the three embodiments described above, as shown in fig. 6, the blade tip 22 is fixedly connected to the inner wall of the rim 3. The height of the upper edge of the rim 3 is equal to or greater than the height of the blades 2 in the vertical direction. In the embodiment shown in fig. 7, the blade tips 22 are fixedly connected to the inner wall of the rim 3. The height of the upper edge of the rim 3 is less than the height of the blades 2 and greater than the height of the blade tips 22 in the vertical direction. In the embodiment shown in fig. 8, the blade tips 22 are fixedly connected to the upper edge of the rim 3. The height of the upper edge of the rim 3 is equal to the height of the blade tip 22 in the vertical direction.
In the embodiment shown in fig. 9-11, the rim 3 has a concave curved surface in cross section in the axial direction. The opening diameter of 3 air inlet sides of wheel rim is greater than the opening diameter of 3 air outlet sides of wheel rim, and this kind of structure can improve the wind speed of air-out at compressed air when the impeller air supply.
In the three embodiments described above, as shown in fig. 9, the blade tips 22 are fixedly connected to the inner wall of the rim 3. The height of the upper edge of the rim 3 is equal to or greater than the height of the blades 2 in the vertical direction. In the embodiment shown in fig. 10, the blade tips 22 are fixedly connected to the inner wall of the rim 3. In the vertical direction, the height of the upper edge of the rim 3 is smaller than the height of the blades 2 and larger than the height of the blade tips 22. In the embodiment shown in fig. 11, the blade tip 22 is fixedly connected to the upper edge of the rim 3. The height of the upper edge of the rim 3 in the vertical direction is equal to the height of the blade tip 22.
In the specific embodiment of the present invention, as shown in fig. 12-17, the impeller further has a sealing ring 4, the sealing ring 4 is disposed at one end of the air outlet of the rim 3, that is, the sealing ring 4 is fixedly connected to the lower edge of the rim 3. Sealing ring 4 is used for forming dynamic seal structure with the cooperation of fan housing, when reducing the impeller rotation, the air current leaks out from between the gap of impeller and fan housing, leads to the fan pressure release, reduces air-out efficiency and air-out wind speed.
The embodiment shown in figure 12 differs from that shown in figure 6 in that the lower edge of the rim 3 is provided with a sealing ring 4.
The embodiment shown in figure 13 differs from that shown in figure 7 in that the lower edge of the rim 3 is provided with a sealing ring 4.
The embodiment of figure 14 differs from that of figure 8 in that the lower edge of the rim 3 is provided with a sealing ring 4.
The embodiment shown in figure 15 differs from that shown in figure 9 in that the lower edge of the rim 3 is provided with a sealing ring 4.
The embodiment of figure 16 differs from that of figure 10 in that the lower edge of the rim 3 is provided with a sealing ring 4.
The embodiment of figure 17 differs from that of figure 11 in that the lower edge of the rim 3 is provided with a sealing ring 4.
The utility model discloses an among the embodiment, sealing ring 4 cross section is L shape, and sealing ring 4 and wheel rim 3 integrated into one piece, can promote sealing ring 4's structural strength.
In the embodiment shown in fig. 6-20, the blade root 21 is formed integrally with the hub 1 for increasing the structural strength of the blade 2. The blade tips 22 are integrally formed with the rim 3 for improving the structural strength of the blades 2. The structural strength at the blade tip 22 is strengthened, and the amplitude and frequency of vibration of the blade tip 22 can be reduced when the impeller rotates, so that noise is reduced. In addition, after the structural strength of the blades 2 is improved, the deformation of the blades 2 is reduced when the impeller rotates, and the air supply efficiency of the impeller under the condition of high rotation speed can be effectively improved.
In addition, in the embodiment shown in fig. 18, the impeller is a 7-blade impeller.
In the embodiment shown in fig. 19, the impeller is a 5-bladed impeller.
In the embodiment shown in fig. 20, the impeller is a 3-blade impeller.
The foregoing is only an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention should fall within the protection scope of the present invention.
Claims (9)
1. Low windage high thrust fan impeller, its characterized in that, this impeller includes: the fan comprises a hub (1) and a plurality of blades (2) which are uniformly distributed on the outer ring of the hub (1);
the transverse cutting width of the blade (2) from a blade root (21) to a blade tip (22) is gradually increased;
the front edge (23) of the blade (2) is positioned at the highest position of the blade and tilts upwards, and the front edge (23) of the blade (2) extends to the rear edge (24) of the blade (2) in a concave curved surface manner;
the blade root (21) inclination angle is greater than the blade tip (22) inclination angle.
2. The low wind resistance high thrust fan impeller of claim 1, characterized in that said impeller further has a rim (3), the inner wall of said rim (3) is fixedly connected with said blade tip (22) for pressurizing the impeller and strengthening the structural strength of said blade (2).
3. The low wind resistance high thrust fan impeller according to claim 2, wherein the section of the rim (3) in the axial direction is a vertical plane.
4. The fan impeller with low wind resistance and high thrust as claimed in claim 2, wherein the cross section of the rim (3) in the axial direction is a concave curved surface.
5. The low wind resistance high thrust fan impeller of claim 2, characterized in that, the impeller further has a sealing ring (4), the sealing ring (4) is arranged at one end of the air outlet of the rim (3) for forming a dynamic sealing structure in cooperation with the fan housing.
6. The fan impeller with low wind resistance and high thrust as claimed in claim 5, wherein the cross section of the sealing ring (4) is L-shaped, and the sealing ring (4) is integrally formed with the rim (3).
7. The low windage high thrust fan impeller of claim 1, wherein the blade root (21) is angled at 50 ° to 75 °;
the inclination angle of the blade tip (22) is 25-40 degrees.
8. The low windage high thrust fan impeller of claim 1, wherein the blade root (21) is integrally formed with the hub (1) for increasing the structural strength of the blade (2).
9. The low windage high thrust fan impeller of claim 2, wherein the blade root (21) is integrally formed with the hub (1) for increasing the structural strength of the blade (2);
the blade tip (22) and the rim (3) are integrally formed and used for improving the structural strength of the blade (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222218438.XU CN217761440U (en) | 2022-08-23 | 2022-08-23 | Low-wind-resistance high-thrust fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222218438.XU CN217761440U (en) | 2022-08-23 | 2022-08-23 | Low-wind-resistance high-thrust fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217761440U true CN217761440U (en) | 2022-11-08 |
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ID=83880703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222218438.XU Active CN217761440U (en) | 2022-08-23 | 2022-08-23 | Low-wind-resistance high-thrust fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217761440U (en) |
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2022
- 2022-08-23 CN CN202222218438.XU patent/CN217761440U/en active Active
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