CN220081793U - Wing type noise-reducing fan blade - Google Patents
Wing type noise-reducing fan blade Download PDFInfo
- Publication number
- CN220081793U CN220081793U CN202321559189.9U CN202321559189U CN220081793U CN 220081793 U CN220081793 U CN 220081793U CN 202321559189 U CN202321559189 U CN 202321559189U CN 220081793 U CN220081793 U CN 220081793U
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- wing
- fan blade
- blades
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 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
- 230000000191 radiation effect Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an airfoil noise reduction fan blade, which comprises a connecting disc, wherein a connecting ring is sleeved on the connecting disc, a plurality of blades are uniformly arranged on the outer ring of the connecting ring at intervals, and the distal ends of the plurality of blades are connected through a mute ring; the utility model provides an airfoil noise reduction fan blade, which solves the problem that when air flow enters a fan, strong pressure fields are formed between blades by the air flow, when the air flow is large enough, the pressure in a region far away from the fan blade is increased, the flow speed of the air flow is influenced, and meanwhile, larger noise is generated.
Description
Technical Field
The utility model relates to the field of noise reduction fan blades, in particular to an airfoil type noise reduction fan blade.
Background
The heat dissipation fan plays a vital role in some computer products, especially on notebook computers, the heat dissipation efficiency of the heat dissipation fan directly affects the operation efficiency and the service life of the processors such as the CPU of the notebook computer.
The patent with the application number of CN202120890303.0 discloses an impeller for a centrifugal fan, which comprises a hub, at least two first blade areas and at least two second blade areas, wherein the first blade areas and the second blade areas are staggered along the circumferential direction of the hub; the upper surface of one end, far away from the hub, of the first blade zone is higher than the upper surface of one end, far away from the hub, of the second blade zone, and the lower surface of one end, far away from the hub, of the first blade zone is lower than the lower surface of one end, far away from the hub, of the second blade zone; the annular rib is connected with the upper surface and/or the lower surface of one end, far away from the hub, of each of the first blade area and the second blade area. The utility model can ensure the stability of the heat radiation effect in the long-term use process, can further form a peak-valley structure and improve the mute effect.
When the air flow enters the fan, the air flow can form a strong pressure field between the blades, and when the air flow is large enough, the pressure in the area far away from the blades can be increased, so that the flow speed of the air flow can be influenced, and larger noise is generated.
Disclosure of Invention
The utility model overcomes the defects of the prior art, provides the wing-shaped noise-reducing fan blade, and solves the problems that when air flow enters a fan, strong pressure field is formed between blades by the air flow, when the air flow is large enough, the pressure in a region far away from the fan blade is increased, the flow speed of the air flow is influenced, and simultaneously, larger noise is generated.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the wing-shaped noise-reducing fan blade comprises a connecting disc, wherein a connecting ring is sleeved on the connecting disc, a plurality of blades are uniformly arranged on the outer ring of the connecting ring at intervals, and the distal ends of the plurality of blades are connected through a mute ring;
the noise reduction device is characterized in that wing-shaped noise reduction blocks with the same number as a plurality of blades are uniformly arranged on one side of the mute ring at intervals, and the wing-shaped noise reduction blocks are positioned at the middle positions of two adjacent blades.
In a preferred embodiment of the present utility model, the diameter of the aerofoil noise reduction block decreases from one end to the other end, and both ends of the aerofoil noise reduction block are respectively provided with an arc chamfer smoothly connected with the mute ring.
In a preferred embodiment of the present utility model, the mute rings are located on the same side of the plurality of blades and perpendicular to the different surfaces of the blades.
In a preferred embodiment of the present utility model, the mute ring is located at the middle of the distal ends of the plurality of blades and is perpendicular to the different surfaces of the blades.
In a preferred embodiment of the present utility model, the larger diameter end of the airfoil noise reduction block is directed toward the connecting ring.
In a preferred embodiment of the present utility model, the smaller diameter end of the airfoil noise reduction block is directed to the connecting ring.
In a preferred embodiment of the present utility model, the larger diameter end of the airfoil noise reduction block is directed toward the connecting ring.
In a preferred embodiment of the present utility model, the smaller diameter end of the airfoil noise reduction block is directed toward the connecting ring.
In a preferred embodiment of the present utility model, the airfoil noise reduction block is located on the side of the mute ring facing the airflow source.
In a preferred embodiment of the present utility model, the airfoil noise reduction block is located on the side of the mute ring facing or facing away from the airflow source.
The utility model solves the defects existing in the background technology, and has the beneficial effects that:
(1) The airfoil noise reduction point is designed in the area with the maximum pressure between the blades, the airfoil structure is utilized to divide pressure and speed up in the area with the maximum flow field pressure (namely, one end of the blades far away from the connecting ring), and potential energy collection is carried out at the tail end of the airfoil after the pressure of airflow flows through the surface of the airfoil, so that the noise is reduced, the flow speed is improved, and the heat exchange efficiency is improved.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a fan blade with a seed airfoil shape for noise reduction in a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of a fan blade with noise reduction function according to a preferred embodiment of the present utility model;
FIG. 3 is a schematic view of a fan blade with noise reduction function according to a preferred embodiment of the present utility model;
FIG. 4 is a schematic view of a fan blade with noise reduction function according to a preferred embodiment of the present utility model;
FIG. 5 is a schematic view of a fan blade with noise reduction function according to a preferred embodiment of the present utility model;
FIG. 6 is a schematic view of a seed airfoil noise reduction fan blade in accordance with a preferred embodiment of the present utility model;
FIG. 7 is a schematic top view of FIG. 6 in a preferred embodiment of the utility model;
FIG. 8 is a schematic cross-sectional view of FIG. 7 at A-A in accordance with a preferred embodiment of the present utility model;
FIG. 9 is an enlarged schematic view of the structure of FIG. 8 at B in a preferred embodiment of the utility model;
FIG. 10 is a graph showing test data spectrum of a conventional fan blade in accordance with a preferred embodiment of the present utility model;
FIG. 11 is a graph showing test data spectrum of airfoil noise reduction fan blades in accordance with a preferred embodiment of the present utility model;
wherein, 1, the connection disc; 2. a connecting ring; 3. a blade; 4. a mute ring; 5. the wing-shaped noise reduction block.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
It should be noted that, if a directional indication (such as up, down, bottom, top, etc.) is involved in the embodiment of the present utility model, the directional indication is merely used to explain the relative positional relationship between the components, the movement situation, etc. in a certain specific posture, and if the specific posture is changed, the directional indication is correspondingly changed. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-9, an airfoil noise reduction fan blade comprises a connecting disc 1, wherein a connecting ring 2 is sleeved on the connecting disc 1, a plurality of blades 3 are uniformly arranged on the outer ring of the connecting ring 2 at intervals, and the distal ends of the plurality of blades 3 are connected through a mute ring 4;
one side of the mute ring 4 is uniformly provided with wing-shaped noise reduction blocks 5 with the same quantity as the plurality of blades 3 at intervals, and the wing-shaped noise reduction blocks 5 are positioned at the middle positions of two adjacent blades 3.
Specifically, through being provided with the wing section piece of making an uproar 5 in the position of two adjacent blades 3 middles on the silence ring 4, when the air current is guided to the silence ring 4 by blade 3, the wing section piece of making an uproar 5 can be to the air current dispersion of the great regional air current of pressure on the silence ring 4, makes the air current flow to the distal end of blade 3 along the wing section piece of making an uproar 5 of making an uproar, prevents that the atmospheric pressure on the silence ring 4 is too big to reach the effect that increases the air current velocity of flow, noise reduction.
Further, as shown in fig. 9, in order to increase the guiding and dispersing effects of the airfoil noise reduction block 5 on the air flow. The diameter of the wing-shaped noise reduction block 5 decreases from one end to the other end, and the two ends of the wing-shaped noise reduction block 5 are respectively provided with an arc chamfer which is in smooth connection with the mute ring 4.
Example 1
As shown in fig. 1 and 2, compared with a common radiator fan, the wing-shaped noise reduction fan blade of the present utility model has different expression forms, but the shape of the wing-shaped noise reduction block 5 and the positional relationship between the wing-shaped noise reduction block 5 and the mute ring 4 are not changed.
In this embodiment, the mute ring 4 is located on the same side of the plurality of blades 3 and is perpendicular to the different surfaces of the blades 3.
The larger one end of the wing-shaped noise reduction block 5 is directed to the connecting ring 2 or the smaller one end of the wing-shaped noise reduction block 5 is directed to the connecting ring 2, wherein the wing-shaped noise reduction block 5 is positioned on one side of the mute ring 4 facing the airflow source. The airflow source is the direction of airflow, and is the source of airflow.
Example two
As shown in fig. 3 to 6, in this embodiment, the shape of the airfoil-shaped noise reduction block 5 is not changed, and the mute ring 4 is located at the middle of the distal ends of the plurality of blades 3 and perpendicular to the different surfaces of the blades 3.
Further, the larger diameter end of the wing noise reduction block 5 is directed to the connecting ring 2 or the smaller diameter end of the wing noise reduction block 5 is directed to the connecting ring 2.
Further, the aerofoil noise reduction block 5 is located on the side of the mute ring 4 facing or facing away from the airflow source.
Through tests, compared with the common fan blade, the wing type noise-reducing fan blade disclosed by the utility model has the advantages that the fan blade noise is 53.28dB, the wing type noise-reducing point is 54.85dB, and the noise of the wing type noise-reducing fan blade is reduced by 1.57dB. The detailed data are shown in fig. 10 and 11.
Working principle: the wing-shaped noise reduction points are designed in the area with the maximum pressure among the blades 3, the wing-shaped structure is utilized to carry out partial pressure acceleration in the area with the maximum flow field pressure (namely, one end of the blades 3 far away from the connecting ring 2), after the airflow flows through the wing-shaped surface, the pressure is reduced, the flow speed is increased, potential energy is collected at the tail end of the wing, so that the noise is reduced, the flow speed is increased, the heat exchange efficiency is increased, and in a cooling fan with the same volume, the wing-shaped noise reduction fan blade has better noise reduction effect.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The utility model provides a fan blade of making an uproar falls in wing section, includes connection pad (1), its characterized in that: a connecting ring (2) is sleeved on the connecting disc (1), a plurality of blades (3) are uniformly arranged on the outer ring of the connecting ring (2) at intervals, and the distal ends of the plurality of blades (3) are connected through a mute ring (4);
one side interval of silence ring (4) is even be provided with a plurality of wing section noise reduction piece (5) the same with blade (3) quantity, wing section noise reduction piece (5) are located adjacent two the positive intermediate position of blade (3).
2. The airfoil noise reduction fan blade of claim 1, wherein: the diameter of the wing-shaped noise reduction block (5) is gradually decreased from one end to the other end, and arc chamfer angles which are in smooth connection with the mute ring (4) are respectively arranged at the two ends of the wing-shaped noise reduction block (5).
3. The airfoil noise reduction fan blade of claim 1, wherein: the mute rings (4) are positioned on the same sides of the blades (3) and are perpendicular to different surfaces of the blades (3).
4. The airfoil noise reduction fan blade of claim 1, wherein: the mute rings (4) are positioned in the middle of the distal ends of the blades (3) and perpendicular to the different surfaces of the blades (3).
5. A wing noise reduction fan blade according to any of claims 1-3, wherein: one end of the wing-shaped noise reduction block (5) with a larger diameter points to the connecting ring (2).
6. A wing noise reduction fan blade according to any of claims 1-3, wherein: one end of the wing-shaped noise reduction block (5) with smaller diameter points to the connecting ring (2).
7. The airfoil noise reduction fan blade according to any one of claims 1, 2, and 4, wherein: one end of the wing-shaped noise reduction block (5) with a larger diameter points to the connecting ring (2).
8. The airfoil noise reduction fan blade according to any one of claims 1, 2, and 4, wherein: one end of the wing-shaped noise reduction block (5) with smaller diameter points to the connecting ring (2).
9. A wing noise reduction fan blade according to any of claims 1-3, wherein: the wing-shaped noise reduction block (5) is positioned on one side of the mute ring (4) facing the airflow source.
10. The airfoil noise reduction fan blade according to any one of claims 1, 2, and 4, wherein: the wing-shaped noise reduction block (5) is positioned on one side of the mute ring (4) facing or facing away from the airflow source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559189.9U CN220081793U (en) | 2023-06-19 | 2023-06-19 | Wing type noise-reducing fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321559189.9U CN220081793U (en) | 2023-06-19 | 2023-06-19 | Wing type noise-reducing fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220081793U true CN220081793U (en) | 2023-11-24 |
Family
ID=88815878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321559189.9U Active CN220081793U (en) | 2023-06-19 | 2023-06-19 | Wing type noise-reducing fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220081793U (en) |
-
2023
- 2023-06-19 CN CN202321559189.9U patent/CN220081793U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4501575B2 (en) | Axial blower | |
| CN101463831B (en) | Cooling fan and its fan blades | |
| JP4570135B2 (en) | Cooling hole position, configuration and configuration of peripheral cooling turbine bucket airfoil | |
| US9234524B2 (en) | Boundary layer controlled logarithmic spiral blade | |
| US20060034694A1 (en) | Radial fan having axial fan blade configuration | |
| CN220081793U (en) | Wing type noise-reducing fan blade | |
| CN110630565A (en) | Axial fan wind-guiding circle and axial fan | |
| CN214465105U (en) | High-efficiency low-noise centrifugal fan | |
| CN101349282A (en) | Impeller set | |
| WO2020063565A1 (en) | Blade and axial flow impeller using same | |
| CN210715260U (en) | Axial compressor duct flabellum of making an uproar falls | |
| CN107313977B (en) | Centrifugal fan blade, centrifugal fan and air conditioner | |
| KR101408917B1 (en) | Axial Flow Fan | |
| CN212297018U (en) | Impeller, centrifugal fan and range hood | |
| CN212272652U (en) | Low-noise impeller and range hood | |
| KR100405207B1 (en) | Micro fan | |
| CN211009264U (en) | Centrifugal impeller with circumferentially offset splitter blades | |
| CN210317895U (en) | Multi-section type fan with flow guiding hub structure | |
| CN214998464U (en) | Novel high-performance low-noise radiating fan frame | |
| CN221170112U (en) | Shark gill bionic axial-flow fan blade and axial-flow fan | |
| CN217080873U (en) | Impeller | |
| CN217842110U (en) | Impeller and centrifugal fan | |
| CN220726653U (en) | Fan wheel, fan and electronic product | |
| CN217873415U (en) | Blade and impeller, forward centrifugal fan and range hood with same | |
| CN212508971U (en) | Novel fan composite impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |