CN214998464U - Novel high-performance low-noise radiating fan frame - Google Patents
Novel high-performance low-noise radiating fan frame Download PDFInfo
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- CN214998464U CN214998464U CN202120323393.5U CN202120323393U CN214998464U CN 214998464 U CN214998464 U CN 214998464U CN 202120323393 U CN202120323393 U CN 202120323393U CN 214998464 U CN214998464 U CN 214998464U
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Abstract
The utility model relates to a novel high performance low noise radiator fan frame is not good enough to the air inlet department structural design who solves fan frame in the current like product, and the comb flow effect that leads to the air current is relatively poor, and the noise is great, the relatively poor technical problem of radiating effect and design. The fan frame of the cooling fan is internally provided with an impeller, an air inlet orifice on one side surface of the fan frame is provided with a flow-rectifying grid, and the structural design key point is that the middle of the flow-rectifying grid is provided with a flow-rectifying hole, the inner diameter of the flow-rectifying hole is aligned with the bottom of a hub of the impeller in the fan frame, and an annular ring surface between the inner diameter and the outer diameter of the flow-rectifying grid is provided with spiral uniformly distributed flow-rectifying holes; the fan frame is square, the end corners of one side of the rectifying grating of the fan frame are respectively provided with a rectifying groove, the rectifying grooves are arc-shaped flow guide grooves which are uniformly distributed, and the two sides of each rectifying groove are respectively provided with a fan frame round corner. Therefore, the airflow near the air inlet of the cooling fan is combed through the rectifying grid, and the effects of reducing the aerodynamic noise of the fan and improving the efficiency of the cooling fan are achieved.
Description
Technical Field
The utility model relates to a radiator fan is a novel high performance low noise radiator fan frame.
Background
The heat dissipation fan generally refers to a fan used for heat dissipation of main board devices such as a CPU and a graphics card, and some of the heat dissipation fans are further provided with heat dissipation fins, which mainly aim to conduct heat and blow the heat to nearby air, so as to achieve a cooling effect. Meanwhile, as the application field of electronic products is more and more extensive, the equipment installed on the electronic products is more and more precise, and the cooling fan is gradually and widely applied to metal cabinets of equipment such as servers. The present dual-impeller axial flow fan, as disclosed in chinese patent application No. 201811642505.2, application publication No. 2020.07.07, entitled "fan assembly and communication device"; some heat dissipation fans with a flow straightening grid, such as application No. 201210279579.0 disclosed in chinese patent document, application publication No. 2018.03.13, entitled "fan module and server device". However, the conventional heat dissipation fan used in the electronic heat dissipation industry has a certain bottleneck due to the requirement of high air volume and low noise. In order to improve the aerodynamic performance of the fan, the fan cannot meet the requirements of the existing industry only by optimizing the fan in the aspect of wing profile optimization, so that a fan frame structure capable of improving the working air quantity and improving the noise is needed.
Disclosure of Invention
In order to overcome the defects, the utility model aims to provide a novel high performance low noise radiator fan frame to this field, make its air inlet department structural design who solves fan frame in the current like product not good enough, lead to the comb of air current to flow the effect relatively poor, the noise is great, the relatively poor technical problem of radiating effect. The purpose is realized by the following technical scheme.
The utility model provides a novel high performance low noise radiator fan frame, is equipped with the impeller in this radiator fan frame's the fan frame, and the air inlet drill way of fan frame side is equipped with the rectification bars, and its structural design main points are the centre of rectification bars is equipped with rectification hole, and the internal diameter of rectification hole aligns with the wheel hub bottom of impeller in the fan frame, and the annular circle face between rectification bars internal diameter and the external diameter is equipped with spiral evenly distributed's comb discharge orifice. Therefore, the airflow near the air inlet of the cooling fan is combed through the rectifying grid, and the effects of reducing the aerodynamic noise of the fan and improving the efficiency of the cooling fan are achieved.
The fan frame is square, the end angle of one side of the rectifying grid of the fan frame is respectively provided with a rectifying groove, the rectifying grooves are arc-shaped flow guide grooves which are uniformly distributed, and fan frame round corners are respectively arranged on two sides of each rectifying groove. The air inlet circular bead is provided with the circular bead and the combing groove, the relative area of the air inlet can be increased, the average flow speed of air flow at the air inlet is reduced, and the purpose of reducing noise is achieved.
The impeller comprises a main impeller and an auxiliary impeller, the main impeller is positioned on one side of the rectifying grid of the fan frame, the auxiliary impeller is positioned in an air outlet hole on one symmetrical side surface of the fan frame, and the heights of blades and a hub of the auxiliary impeller are lower than those of the main impeller. The above is an embodiment of a dual-impeller axial-flow heat dissipation fan structure.
The utility model has reasonable structural design, good heat dissipation effect, particularly good airflow combing effect near the air inlet, small noise and large flow; it is suitable for being used as a cooling fan frame and further improving similar products.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a rear structural view of fig. 1.
Fig. 3 is a schematic sectional structure view of fig. 1.
Figure number and name: 1. the device comprises a fan frame 101, a rectifying groove 102, a fan frame fillet 2, a rectifying grid 3, a main impeller 4 and an auxiliary impeller.
Detailed Description
The structure and use of the present invention will now be further described with reference to the accompanying drawings. As shown in fig. 1-3, the fan frame of the heat dissipation fan comprises a flow guiding grid 2, a fan frame 1 and an impeller, wherein a fillet is designed on one side of an air inlet of the fan frame, a flow guiding groove is arranged on the fillet, the flow guiding grid is arranged in the direction of the air inlet of the impeller, and the flow guiding grid is composed of a plurality of concentric rings and radial guide vanes. The concrete structure is as follows: the impeller is arranged in a fan frame of the cooling fan frame, a rectifying grid is arranged at an air inlet orifice on one side surface of the fan frame, a rectifying hole is arranged in the middle of the rectifying grid, the inner diameter of the rectifying hole is aligned with the bottom of a hub of the impeller in the fan frame, and a spiral uniformly-distributed combing hole is arranged on an annular ring surface between the inner diameter and the outer diameter of the rectifying grid. The fan frame is square, the end corners of one side of the rectifying grating of the fan frame are respectively provided with a rectifying groove 101, the rectifying grooves are arc-shaped flow guide grooves which are uniformly distributed, and the two sides of each rectifying groove are respectively provided with a fan frame round corner 102. The impeller comprises a main impeller 3 and an auxiliary impeller 4, the main impeller is positioned on one side of a rectifying grid of the fan frame, the auxiliary impeller is positioned at an air outlet hole on one symmetrical side surface of the fan frame, and the heights of blades and a hub of the auxiliary impeller are lower than those of the main impeller.
According to the structural characteristics, the fillet radius of the fan-frame rectifying groove is made as large as possible on the basis of structure and process allowance, the width of a single rectifying groove arranged on the fillet is larger than 2mm, the depth is not smaller than 1mm, and the distance between the rectifying grooves is not larger than 3 mm; the number and the spacing of the concentric rings are set according to the working conditions of different fans, and the wall surface shapes of the concentric rings are designed according to airflow streamlines near the impeller of the air inlet surface; the grid curved surface molded lines of the rectifying grids are similar to the front edges of the blades but opposite in direction, and the spacing and the number of the grids are determined according to whether the design target is met. The low pressure of the lifting surface of the fan blade of the radiating fan frame is obviously reduced, which shows that the air speed of the lifting surface of the fan is increased, and the fan can pass through the fan more smoothly; the power of the cooling fan is obviously reduced at the rated rotating speed under different working conditions; the strength of the surface eddy current of the cooling fan is obviously reduced, and the pneumatic noise improvement effect of the cooling fan is obvious.
Claims (3)
1. The utility model provides a novel high performance low noise radiator fan frame, is equipped with the impeller in this radiator fan frame's fan frame (1), and the air inlet drill way of fan frame side is equipped with rectification bars (2), its characterized in that the centre of rectification bars (2) is equipped with rectification hole, and the internal diameter of rectification hole aligns with the wheel hub bottom of impeller in fan frame (1), and the annular circle face between rectification bars internal diameter and the external diameter is equipped with spiral evenly distributed's comb flow hole.
2. The new high performance low noise heat dissipation fan frame as claimed in claim 1, wherein the fan frame (1) is square, the rectifying slots (101) are respectively disposed at the end corners of one side of the rectifying grid (2) of the fan frame, the rectifying slots are evenly distributed arc-shaped guiding slots, and the fan frame fillets (102) are respectively disposed at the two sides of the rectifying slots.
3. The new high performance low noise heat dissipation fan frame as claimed in claim 1, wherein the impeller comprises a main impeller (3) and a sub-impeller (4), the main impeller is located at one side of the rectifying grid (2) of the fan frame (1), the sub-impeller is located at the air outlet hole at the symmetrical side of the fan frame, and the height of the blade and the hub of the sub-impeller is lower than that of the blade and the hub of the main impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120323393.5U CN214998464U (en) | 2021-02-04 | 2021-02-04 | Novel high-performance low-noise radiating fan frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120323393.5U CN214998464U (en) | 2021-02-04 | 2021-02-04 | Novel high-performance low-noise radiating fan frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214998464U true CN214998464U (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120323393.5U Active CN214998464U (en) | 2021-02-04 | 2021-02-04 | Novel high-performance low-noise radiating fan frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214998464U (en) |
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2021
- 2021-02-04 CN CN202120323393.5U patent/CN214998464U/en active Active
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