Bionic mute fan blade and fan

Abstract

The invention discloses a bionic mute fan blade and a fan, and relates to the technical field of fans. The bionic mute fan blade comprises a hub, a mute ring and a plurality of blades; a first groove is formed in the position, between every two adjacent blades, of the side face, facing the blades, of the mute ring, and the two ends of the first groove extend to the outer circumferential face and the inner circumferential face of the mute ring correspondingly. And / or second grooves are formed in the positions, between the adjacent blades, of the inner circumferential face of the mute ring, and the two ends of each second groove extend to one side face and the other side face of the mute ring correspondingly. Through the design of the grooves, air blocked by the mute ring area of the fan blade in high-speed operation can be structurally guided, so that formation of vortexes in the mute ring area is reduced, the operation noise of the fan blade is reduced, meanwhile, the air volume and the air pressure of the fan blade are improved, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The present application relates to the field of fan technology, and in particular to a bionic silent fan blade and a fan. Background Art

[0002] In today's digital age, laptops have become an indispensable tool in people's lives and work. In order to meet people's pursuit of portability, laptops are constantly moving towards lighter and thinner designs. The significant reduction in thickness and weight makes it easier for users to carry laptops when traveling. However, the improvement in performance and the thinness of the body also bring severe challenges to the heat dissipation of laptops. Traditional heat dissipation methods are difficult to play a good heat dissipation role in a limited space.

[0003] Centrifugal fans, with their small size and high wind pressure, are gradually emerging in the field of notebook computer heat dissipation. They can provide strong heat dissipation capabilities within the limited space of notebook computers. Figure 1 As shown, the blades of the existing centrifugal fan are usually designed with a hub (100), a silent ring (200) arranged outside the hub (100), and a plurality of blades (300) connected to the silent ring (200) and the hub (100). However, after research, it was found that the existing silent ring (200) adopts a square cross-section design. When the fan blades are running at high speed, the silent ring (200) will hinder the high-speed flow of gas, and turbulent airflow will be generated during the high-speed friction and object obstruction process, reducing the flow rate and wind pressure of the fan blades, thereby affecting the heat dissipation effect, and generating eddy noise, affecting the user experience. Summary of the invention

[0004] In view of this, the purpose of this application is to provide a bionic silent fan blade and fan to solve the technical problem that when traditional fan blades rotate at high speed, the air volume and pressure are easily reduced and eddy current noise is generated due to the obstruction of the silent ring.

[0005] In order to achieve the above technical purpose, the present application provides a bionic silent fan blade, including a hub, a silent ring and a plurality of blades;

[0006] One end of a plurality of blades is connected to the hub and is spaced apart around the circumference of the hub;

[0007] The silent ring is arranged outside the wheel hub, and its center line coincides with the center line of the wheel hub;

[0008] One side of the silent ring is connected to the blade;

[0009] A first groove is provided on one side surface of the silent ring facing the blades at a position between adjacent blades, and its two ends extend to the outer circumference and inner circumference of the silent ring respectively; and / or a second groove is provided on the inner circumference of the silent ring at a position between adjacent blades, and its two ends extend to one side and the other side of the silent ring respectively.

[0010] Further, there are at least two first grooves between adjacent blades, and at least two of the first grooves are arranged at intervals along the circumference of the silent ring, so that a first spacing convex beam is formed between adjacent first grooves; and / or, there are at least two second grooves between adjacent blades, and at least two of the second grooves are arranged at intervals along the circumference of the silent ring, so that a second spacing convex beam is formed between adjacent second grooves.

[0011] Further, the side surface of the blade is smoothly connected to the inner wall surface of the adjacent first groove; and / or the side surface of the blade is smoothly connected to the inner wall surface of the adjacent second groove.

[0012] Furthermore, at least 2n first grooves and / or 2n second grooves are provided between adjacent blades, wherein n≥1 and is a natural number.

[0013] Furthermore, the first groove is one of a semicircular groove, an n-shaped groove, a V-shaped groove, a trapezoidal groove and a rectangular groove.

[0014] Furthermore, the second groove is one of a semicircular groove, an n-shaped groove, a V-shaped groove, a trapezoidal groove and a rectangular groove.

[0015] Furthermore, the first spaced convex beam and / or the second spaced convex beam is provided with a first arc chamfer.

[0016] Furthermore, the number of the first grooves is the same as that of the second grooves, and they are connected and conductive in a one-to-one correspondence.

[0017] Furthermore, a second arc chamfer is provided at the connection between the first groove and the second groove.

[0018] The present application also discloses a fan, comprising a housing and the fan blades;

[0019] The shell is provided with a containing space and an air inlet and an air outlet communicating with the containing space;

[0020] The fan blades are rotatably mounted in the accommodating space.

[0021] It can be seen from the above technical solutions that the bionic silent fan blade designed in this application is improved by designing the silent ring, and grooves are respectively provided on the side of the silent ring facing the blade and / or on the inner circumference of the silent ring between adjacent blades, and the grooves are through-slots with both ends connected to the outside world. Through the above groove design, the air blocked by the silent ring area of ​​the fan blade under high-speed operation can be structurally guided, thereby reducing the formation of vortices in the silent ring area, reducing the operating noise of the fan blade, and at the same time increasing the air volume and air pressure of the fan blade, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 A half-section schematic diagram of a conventional fan blade provided in this application;

[0024] Figure 2 A stereoscopic diagram of a bionic silent fan blade provided in the present application;

[0025] Figure 3 This is an enlarged schematic diagram of a first partial structure of a bionic silent fan blade provided in this application;

[0026] Figure 4 This is an enlarged schematic diagram of a second partial structure of a bionic silent fan blade provided in this application;

[0027] Figure 5 A volume flow simulation diagram of a conventional fan blade provided in this application;

[0028] Figure 6 This is a simulation diagram of the area-weighted average static pressure of a traditional fan blade provided in this application;

[0029] Figure 7 A volume flow simulation diagram of a conventional fan blade provided in this application;

[0030] Figure 8 This is a simulation diagram of the area-weighted average static pressure of a traditional fan blade provided in this application;

[0031] Fig. 9 A three-dimensional diagram of a bionic silent fan provided in the present application;

[0032] Figure 2-9In the figure: 1. wheel hub; 2. silent ring; 21. first groove; 22. first spacing convex beam; 23. second groove; 24. second spacing convex beam; 3. blade; 4. shell; 41. air outlet; 42. air inlet. DETAILED DESCRIPTION

[0033] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0034] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] The embodiment of the present application discloses a bionic silent fan blade.

[0037] See also Figure 2-4 , an embodiment of a bionic silent fan blade provided in the embodiments of the present application includes:

[0038] A hub 1, a silent ring 2 and a plurality of blades 3.

[0039] One end of the plurality of blades 3 is connected to the hub 1 and is spaced around the hub 1 in a circumferential direction; the silent ring 2 is arranged outside the hub 1, and its center line coincides with the center line of the hub 1; one side of the silent ring 2 is connected to the blades 3. The connection design between the silent ring 2, the hub 1 and the blades 3 can refer to the structure of the existing fan blades, and the details are not repeated here.

[0040] A first groove 21 is provided on one side surface of the silent ring 2 facing the blades 3 at a position between adjacent blades 3, and its two ends extend to the outer circumference and inner circumference of the silent ring 2 respectively (the two ends of the first groove 21 extend to the outer circumference and inner circumference of the silent ring 2 respectively, that is, the two ends of the first groove 21 can be connected to the outside world, and it is a radial through groove design).

[0041] and / or,

[0042] A second groove 23 is provided on the inner circumference of the silent ring 2 between adjacent blades 3, and its two ends extend to one side and the other side of the silent ring 2 respectively (the two ends of the second groove 23 extend to one side and the other side of the silent ring 2 respectively, that is, the two ends of the second groove 23 can be connected to the outside world, and it is an axial through groove design).

[0043] It is understandable that the above slot design can have three situations:

[0044] 1. A groove is formed on one side of the silent ring 2 facing the blade 3;

[0045] 2. A groove is formed on the inner circumference of the silent ring 2;

[0046] 3. Grooves are provided on the side surface of the silent ring 2 facing the blade 3 and on the inner circumference of the silent ring 2.

[0047] Preferably, the side surface of the silent ring 2 facing the blades 3 and the inner circumferential surface of the silent ring 2 are both grooved.

[0048] The bionic silent fan blade designed in the present application is improved by the silent ring 2, and grooves are respectively opened on the side of the silent ring 2 facing the blade 3 and / or the inner circumference of the silent ring 2 between adjacent blades 3, and the grooves are all through grooves connected to the outside world at both ends. Through the above-mentioned groove design, the air blocked by the silent ring 2 area of ​​the fan blade under high-speed operation can be structurally guided, thereby reducing the formation of vortices in the silent ring 2 area, reducing the running noise of the fan blade, and at the same time increasing the air volume and wind pressure of the fan blade, thereby improving the heat dissipation effect.

[0049] The above is an embodiment of a bionic silent fan blade provided in the embodiment of the present application. The following is an embodiment of a bionic silent fan blade provided in the embodiment of the present application. For details, please refer to Figures 2 to 8 .

[0050] Further, there are at least two first grooves 21 between adjacent blades 3, and at least two first grooves 21 are arranged at intervals along the circumference of the silent ring 2, so that a first spacing convex beam 22 is formed between adjacent first grooves 21. And / or, there are at least two second grooves 23 between adjacent blades 3, and at least two second grooves 23 are arranged at intervals along the circumference of the silent ring 2, so that a second spacing convex beam 24 is formed between adjacent second grooves 23.

[0051] Every two first grooves 21 and the first spaced convex beams 22 in the middle and / or every two second grooves 23 and the second spaced convex beams 24 in the middle respectively form a "falcon" shaped structure (a structure imitating the diving posture of a peregrine falcon), that is, a "M" shaped structure. Between the two blades 3, from both the top view and the front view, they are all composed of a combination of double grooves, so that there is a protrusion like the head and abdomen of a "falcon" in the middle of the two blades 3 (preferably, at least two designs of the first grooves 21 and the second grooves 23). Through the above design, the aerodynamic principle can be more fully utilized, the air blocked by the silent ring area can be better guided, the operating noise of the fan blades can be further reduced, and the air volume and air pressure of the fan blades can be increased, and the heat dissipation effect can be further improved.

[0052] In order to further prove the improvement effect of the bionic silent fan blade designed in the present application (the side surface of the silent ring 2 facing the blade 3 and the inner circumference of the silent ring 2 are both grooved) compared with the traditional fan blade, a fan with a traditional fan blade and a fan with a fan blade designed in the present application are simulated and compared respectively:

[0053] from Figure 5 It can be seen that the volume flow rate at the outlet of the fan with traditional fan blades is 7.25 cfm. Figure 6 It can be seen that the area weighted average static pressure at the outlet of the fan with traditional fan blades is 158 pascal.

[0054] from Figure 7 It can be seen that the volume flow rate of the fan outlet (outlet) using the fan blades designed in this application is 7.48 cfm. Figure 8 It can be seen that the area weighted average static pressure at the outlet of the fan using the fan blade designed in the present application is 167.6 pascal.

[0055] The comparison table is as follows:

[0056]

[0057] Comparative analysis shows that the fan using the fan blades designed in this application has improvements in static pressure and volume flow rate compared to traditional fans, with static pressure increased by 9.6 Pascals (an increase of 6.08%) and volume flow rate increased by 0.23 cubic feet per minute (an increase of 3.17%), which effectively improves wind pressure and air volume, thereby verifying the rationality and progressiveness of the design structure of this application.

[0058] By designing a "groove" structure on the silent ring 2, while ensuring the structural strength of the fan blade, the air flow is better guided and noise is reduced during operation, reducing the wind resistance loss when the blade 3 is in operation, thereby increasing the wind pressure and air volume of the fan blade.

[0059] Furthermore, the side surface of the blade 3 is smoothly connected to the inner wall surface of the adjacent first groove 21. The smooth connection between the blade 3 and the first groove 21 greatly reduces the obstruction to the airflow when flowing through the connection portion, which is more conducive to flow guidance and noise reduction.

[0060] And / or, the side surface of the blade 3 and the inner wall surface of the adjacent second groove 23 are smoothly connected, so that the obstruction to the airflow when flowing through the connection portion is greatly reduced, which is more conducive to guiding and reducing noise.

[0061] Furthermore, at least 2n first grooves 21 and / or 2n second grooves 23 are provided between adjacent blades 3, where n≥1 and is a natural number. Every two grooves form a "falcon"-shaped structure, and 2n grooves can form n "falcon"-shaped structures.

[0062] For notebook heat dissipation application scenarios, adjacent blades 3 can be designed with a "falcon" shape structure, that is, two grooves.

[0063] Of course, the number of grooves may also be n+1, where n≥1 and is a natural number. When n+1 is an odd number, it may also be regarded as having n “falcon” shaped structures, but adjacent “falcon” shaped structures share one groove.

[0064] Furthermore, the first groove 21 and the second groove 23 can be one of a semicircular groove, an n-shaped groove, a V-shaped groove, a trapezoidal groove and a rectangular groove, respectively, without specific limitation.

[0065] From the perspective of specific applications, the semicircular groove can achieve better results than the V-shaped groove, rectangular groove, trapezoidal groove, and n-shaped groove. Therefore, the semicircular groove design is preferred.

[0066] Furthermore, the number of the first grooves 21 and the second grooves 23 is the same, and they are connected one by one. This design helps the smooth flow of airflow, so that the airflow at the corresponding position can be smoothly connected from the second grooves 23 to the first grooves 21, and discharged as the blades do work on the gas.

[0067] Furthermore, a first arc chamfer is provided on the first spacing convex beam 22 and the second spacing convex beam 24, and a second arc chamfer is provided at the connection between the first groove 21 and the second groove 23. The arc chamfer design is a common way to achieve a smooth connection, and the airflow can better fit the surface of the object when flowing through these parts. From the principle of fluid mechanics, the arc chamfer design can provide a gradual transition path for the airflow, allowing the airflow to change direction smoothly, greatly reducing the possibility of airflow separation.

[0068] like Fig. 9 As shown, the present application also discloses a fan, including a housing 4 and fan blades.

[0069] The housing 4 is provided with an accommodating space and an air inlet 42 and an air outlet 41 communicating with the accommodating space, and the fan blades are rotatably installed in the accommodating space.

[0070] The above is a detailed introduction to a bionic silent fan blade and fan provided by the present application. For a general technician in this field, according to the ideas of the embodiments of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A bionic silent fan blade, characterized in that: It comprises a hub (1), a silent ring (2), and a plurality of blades (3); One end of the plurality of blades (3) is connected to the hub (1), and the blades (3) are spaced apart and distributed around the circumference of the hub (1); The silent ring (2) is arranged outside the wheel hub (1), and its center line coincides with the center line of the wheel hub (1); One side surface of the silent ring (2) is connected to the blade (3); A first groove (21) is provided on one side of the silent ring (2) facing the blades (3) at a position between adjacent blades (3), and its two ends extend to the outer circumference and the inner circumference of the silent ring (2); and / or a second groove (23) is provided on the inner circumference of the silent ring (2) at a position between adjacent blades (3), and its two ends extend to one side and the other side of the silent ring (2).

2. The bionic silent fan blade according to claim 1, characterized in that: There are at least two first grooves (21) between adjacent blades (3), and at least two of the first grooves (21) are arranged at intervals along the circumference of the silent ring (2), so that a first spacing convex beam (22) is formed between adjacent first grooves (21); and / or there are at least two second grooves (23) between adjacent blades (3), and at least two of the second grooves (23) are arranged at intervals along the circumference of the silent ring (2), so that a second spacing convex beam (24) is formed between adjacent second grooves (23).

3. The bionic silent fan blade according to claim 1, characterized in that: The side surface of the blade (3) is smoothly connected to the inner wall surface of the adjacent first groove (21); and / or the side surface of the blade (3) is smoothly connected to the inner wall surface of the adjacent second groove (23).

4. The bionic silent fan blade according to claim 2, characterized in that: At least 2n first grooves (21) and / or 2n second grooves (23) are provided between adjacent blades (3), wherein n≥1 and is a natural number.

5. The bionic silent fan blade according to claim 1, characterized in that: The first groove (21) is one of a semicircular groove, an n-shaped groove, a V-shaped groove, a trapezoidal groove and a rectangular groove.

6. The bionic silent fan blade according to claim 1, characterized in that: The second groove (23) is one of a semicircular groove, an n-shaped groove, a V-shaped groove, a trapezoidal groove and a rectangular groove.

7. The bionic silent fan blade according to claim 2, characterized in that: The first spaced convex beam (22) and / or the second spaced convex beam (24) are provided with a first arc chamfer.

8. The bionic silent fan blade according to claim 1, characterized in that: The first grooves (21) and the second grooves (23) are identical in number and are connected and conductively connected in a one-to-one correspondence.

9. The bionic silent fan blade according to claim 8, characterized in that: A second arc chamfer is provided at the connection between the first groove (21) and the second groove (23).

10. A fan, characterized in that It comprises a housing (4) and a fan blade according to any one of claims 1 to 9; The housing (4) is provided with a containing space and an air inlet (42) and an air outlet (41) communicating with the containing space; The fan blades are rotatably mounted in the accommodating space.

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