Bionic mute fan blade and fan

Abstract

The utility model 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 fan technical field, especially to a bionic mute fan blade and fan. BACKGROUND

[0002] In today's digital age, notebook computers have become an indispensable tool in people's life and work. In order to meet people's pursuit of portability, notebook computers continue to develop in the direction of thin and light in design. The substantial reduction in body thickness and weight allows users to carry notebook computers more easily. However, the performance improvement and thin and light of the body also bring serious challenges to the heat dissipation of notebook computers, and the traditional heat dissipation method is difficult to play a good heat dissipation role in limited space.

[0003] Centrifugal fan gradually emerges in the field of notebook computer heat dissipation under the characteristics of small volume, high wind pressure, etc. It can provide relatively strong heat dissipation capacity in the limited space of notebook computer. Figure 1 As shown in the figure, the fan blade of the existing centrifugal fan is usually designed with a hub (100), a mute ring (200) arranged around the hub (100), and a plurality of blades (300) connecting the mute ring (200) and the hub (100). However, through research, it is found that the existing mute ring (200) adopts a square cross-section design. When the fan blade is running at high speed, the mute ring (200) will hinder the high-speed flowing gas. In the process of high-speed friction and object hindering, it will produce turbulent airflow, reduce the flow and wind pressure of the fan blade, and thus affect the heat dissipation effect. At the same time, it will produce vortex noise, affecting the use experience. CONTENT OF THE INVENTION

[0004] Therefore, the purpose of the present application is to provide a bionic mute fan blade and fan, which solves the technical problem that the traditional fan blade is easy to cause wind volume and wind pressure to decrease and produce vortex noise due to the flow resistance of the mute ring when rotating at high speed.

[0005] To achieve the above technical purpose, the present application provides a bionic mute fan blade, which comprises a hub, a mute ring and a plurality of blades.

[0006] One end of the plurality of blades is connected to the hub and is distributed circumferentially and circularly at intervals around the hub.

[0007] The mute ring is arranged outside the hub, and the center line of the mute ring coincides with the center line of the hub.

[0008] One side of the mute ring is connected to the blade.

[0009] The first groove is formed on one side of the mute ring, and the two ends of the first groove extend to the outer circumferential surface and the inner circumferential surface of the mute ring; and / or the second groove is formed on the inner circumferential surface of the mute ring, and the two ends of the second groove extend to one side and the other side of the mute ring.

[0010] Further, the first groove between adjacent vanes is at least two, and at least two first grooves are arranged along the circumference of the mute ring to form a first spaced convex beam between adjacent first grooves; and / or the second groove between adjacent vanes is at least two, and at least two second grooves are arranged along the circumference of the mute ring to form a second spaced convex beam between adjacent second grooves.

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

[0012] Further, at least 2n first grooves and / or 2n second grooves are formed between adjacent vanes, where n≥1 and is a natural number.

[0013] Further, 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] Further, 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] Further, the first spaced convex beam and / or the second spaced convex beam is provided with a first circular arc chamfer.

[0016] Further, the number of the first grooves is consistent with the number of the second grooves, and the first grooves and the second grooves are connected one by one.

[0017] Further, the connection between the first groove and the second groove is provided with a second circular arc chamfer.

[0018] The application further discloses a fan, which comprises a housing and the vane.

[0019] The housing is provided with a containing space, an air inlet, and an air outlet.

[0020] The vane is rotatably installed in the containing space.

[0021] From the above technical scheme can be seen, the bionic mute fan blade designed in the application, through the improved design of the mute ring, recesses are respectively arranged on the side of the mute ring facing the blade and / or the inner circumferential surface of the mute ring at the positions between adjacent blades, and the recesses are all designed as through grooves with both ends communicating with the outside. Through the above recess design, the air blocked by the mute ring area of the blade under high-speed operation can be guided from the structure, thereby reducing the formation of vortex in the mute ring area, reducing the operation noise of the blade, and also improving the air volume and air pressure of the blade, improving the heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a half-section schematic view of a conventional fan blade provided in the present application;

[0024] Figure 2 is a perspective view of a bionic mute fan blade provided in the present application;

[0025] Figure 3 is a first local structure enlarged schematic view of a bionic mute fan blade provided in the present application;

[0026] Figure 4 is a second local structure enlarged schematic view of a bionic mute fan blade provided in the present application;

[0027] Figure 5 is a volume flow simulation diagram of a conventional fan blade provided in the present application;

[0028] Figure 6 is an area-weighted average static pressure simulation diagram of a conventional fan blade provided in the present application;

[0029] Figure 7 is a volume flow simulation diagram of a conventional fan blade provided in the present application;

[0030] Figure 8 is an area-weighted average static pressure simulation diagram of a conventional fan blade provided in the present application;

[0031] Figure 9 is a perspective view of a bionic mute fan provided in the present application;

[0032] Figures 2-9Hub 1, silence ring 2, and a plurality of blades 3. DETAILED DESCRIPTION

[0033] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection 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" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, 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 explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be replaceably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] The embodiments of the present application disclose a bionic silent fan blade.

[0037] Please refer to Figures 2-4 An embodiment of a bionic silent fan blade provided in the embodiments of the present application includes:

[0038] Hub 1, silence ring 2, and a plurality of blades 3.

[0039] A plurality of blades 3 are connected to hub 1 at one end and are distributed at intervals around the circumferential direction of hub 1; silence ring 2 is arranged outside hub 1, and the center line of silence ring 2 coincides with the center line of hub 1; one side surface of silence ring 2 is connected to blade 3. The connection design between silence ring 2, hub 1 and blade 3 can refer to the structure of the existing fan blade, and will not be described in detail.

[0040] The first groove 21 is formed on the side of the sound attenuation ring 2 facing the blade 3, and extends to the outer circumferential surface and the inner circumferential surface of the sound attenuation ring 2.

[0041] And / or,

[0042] The second groove 23 is formed on the inner circumferential surface of the sound attenuation ring 2, and extends to one side and the other side of the sound attenuation ring 2.

[0043] It can be understood that the above slot design can have three cases:

[0044] 1. The side of the sound attenuation ring 2 facing the blade 3 is slotted;

[0045] 2. The inner circumferential surface of the sound attenuation ring 2 is slotted;

[0046] 3. The side of the sound attenuation ring 2 facing the blade 3 and the inner circumferential surface of the sound attenuation ring 2 are both slotted.

[0047] Preferably, the side of the sound attenuation ring 2 facing the blade 3 and the inner circumferential surface of the sound attenuation ring 2 are both slotted.

[0048] The bionic silent fan blade designed in the application improves the design of the sound attenuation ring 2, and a groove is formed on the side of the sound attenuation ring 2 facing the blade 3 and / or the inner circumferential surface of the sound attenuation ring 2 between adjacent blades 3. The groove is a through groove design with both ends communicating with the outside. Through the above groove design, the air blocked by the sound attenuation ring 2 region of the fan blade running at high speed can be guided from the structure, thereby reducing the formation of vortex in the sound attenuation ring 2 region, reducing the fan blade running noise, and improving the fan blade air volume and air pressure, and improving the heat dissipation effect.

[0049] The above is an embodiment one of a bionic silent fan blade provided by the application, and the following is an embodiment two of a bionic silent fan blade provided by the application, 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 along the circumference of the sound attenuation ring 2 to form a first spaced convex beam 22 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 along the circumference of the sound attenuation ring 2 to form a second spaced convex beam 24 between adjacent second grooves 23.

[0051] Each two first grooves 21 and the middle first interval convex beam 22 and / or each two second grooves 23 and the middle second interval convex beam 24 form a “falcon” shape structure (imitating the structure of the falcon diving posture), that is, a “M” shape structure, between two blades 3, which is composed of double grooves from the two directions of top view and front view, and the structure of the convex part between two blades 3 is like the head and abdomen of the falcon (preferably, the first grooves 21 and the second grooves 23 are designed to be at least two). 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 fan blade running noise can be further reduced, the fan blade wind volume and wind pressure can be improved, and the heat dissipation effect can be further improved.

[0052] To further prove the progress effect of the bionic silent fan blade (the side of the silent ring 2 facing the blade 3 and the inner circumferential surface of the silent ring 2 are both grooved) designed in the application compared with the traditional fan blade, the fan with the traditional fan blade and the fan with the fan blade designed in the application are simulated and compared:

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

[0054] From Figure 7 It can be seen that the volume flow rate of the outlet of the fan with the fan blade designed in the application is 7.48 cfm. From Figure 8 It can be seen that the area weighted average static pressure of the outlet of the fan with the fan blade designed in the application is 167.6 pascal.

[0055] The comparison table is as follows:

[0056]

[0057] The comparative analysis can find that the fan with the fan blade designed in the application has an improvement in static pressure and volume flow compared with the traditional fan, wherein the static pressure is improved by 9.6 pascal (6.08% improvement), and the volume flow is improved by 0.23 cubic feet per minute (3.17% improvement), that is, the wind pressure and the wind volume are effectively improved, thereby verifying the rationality and progressiveness of the design structure of the application.

[0058] By designing the "groove" structure on the mute ring 2, the flow guiding and noise reduction are better ensured while the strength of the fan blade structure is ensured, the wind resistance loss of the blade 3 during operation is reduced, and the wind pressure and the wind volume of the fan blade are improved.

[0059] Further, the side surface of the blade 3 is smoothly connected with the inner wall surface of the adjacent first groove 21, and the smooth connection between the blade 3 and the first groove 21 greatly reduces the resistance of the airflow when flowing through the connection position, which is more conducive to flow guiding and noise reduction.

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

[0061] Further, at least 2n first grooves 21 and / or 2n second grooves 23 are arranged between adjacent blades 3, wherein n≥1 and is a natural number. One "falcon" structure is formed by every two grooves, and 2n grooves can form n "falcon" structures.

[0062] For the notebook cooling application scenario, one "falcon" structure can be designed for the adjacent blades 3, that is, two grooves are sufficient.

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

[0064] Further, 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, and the specific design is not limited.

[0065] From the specific application, the semicircular groove can achieve better effect compared with the V-shaped groove, the rectangular groove, the trapezoidal groove, and the n-shaped groove, and therefore, the semicircular groove design is preferred.

[0066] Further, the number of the first grooves 21 is the same as that of the second grooves 23, and they are one-to-one correspondence. This design helps the smooth flow of the airflow, so that the airflow at the corresponding position can be smoothly guided from the second groove 23 to the first groove 21 and be guided out by the blade.

[0067] Further, the first and second spaced apart protrusions 22 and 24 are provided with first arc chamfers, and the junctions of the first and second grooves 21 and 23 are provided with second arc chamfers. The arc chamfer design is a common way to achieve smooth connection. When the air flows through these parts, it can better adhere to the surface of the object. According to 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 and greatly reducing the possibility of airflow separation.

[0068] As shown in Figure 9 The application further discloses a fan, which comprises a shell 4 and a fan blade.

[0069] The shell 4 is provided with a containing space, an air inlet 42 and an air outlet 41 communicating with the containing space, and the fan blade is rotatably installed in the containing space.

[0070] The above describes in detail the bionic mute fan blade and the fan provided by the application. For those skilled in the art, the specific implementation and application range can be changed according to the idea of the embodiments of the application. In conclusion, the content of the specification should not be understood as a limitation of the application.

Claims

1. A biomimetic silent vane, characterized by, The fan blade comprises a hub (1), a mute ring (2) and a plurality of blades (3); The plurality of blades (3) are connected to the hub (1) at one end and are distributed along the circumference of the hub (1) at intervals; The mute ring (2) is arranged outside the hub (1) and the center line of the mute ring (2) coincides with the center line of the hub (1); One side of the mute ring (2) is connected to the blades (3); A first groove (21) is formed on one side of the mute ring (2) between adjacent blades (3), and the two ends of the first groove (21) extend to the outer circumferential surface and the inner circumferential surface of the mute ring (2) respectively; and / or a second groove (23) is formed on the inner circumferential surface of the mute ring (2) between adjacent blades (3), and the two ends of the second groove (23) extend to one side and the other side of the mute ring (2) respectively.

2. The biomimetic silent vane of claim 1, wherein, There are at least two first grooves (21) between adjacent blades (3), and at least two first grooves (21) are arranged along the circumference of the mute ring (2) at intervals, so that a first interval protruding 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 along the circumference of the mute ring (2) at intervals, so that a second interval protruding beam (24) is formed between adjacent second grooves (23).

3. The biomimetic silent vane of claim 1, wherein, 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 biomimetic silent vane of claim 2, wherein, At least 2n first grooves (21) and / or 2n second grooves (23) are formed between adjacent blades (3), where n is a natural number greater than or equal to 1.

5. The biomimetic silent vane of claim 1, wherein, 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 biomimetic silent vane of claim 1, wherein, 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 biomimetic silent vane of claim 2, wherein, A first circular arc chamfer is arranged on the first interval protruding beam (22) and / or the second interval protruding beam (24).

8. The biomimetic silent vane of claim 1, wherein, The number of the first grooves (21) is consistent with the number of the second grooves (23), and the first grooves (21) and the second grooves (23) are connected one by one.

9. The biomimetic silent vane of claim 8, wherein, A second circular arc chamfer is arranged at the connection between the first groove (21) and the second groove (23).

10. A fan characterised by The fan blade comprises a hub (1), a mute ring (2) and a plurality of blades (3); The hub (1) is arranged in the accommodating space of the shell (4), and the blades (3) are rotatably arranged in the accommodating space. The hub (1) is arranged in the accommodating space of the shell (4), and the blades (3) are rotatably arranged in the accommodating space.

Images