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CN-224228942-U - Super-silent radiator fan flabellum and radiator fan

CN224228942UCN 224228942 UCN224228942 UCN 224228942UCN-224228942-U

Abstract

The utility model discloses a super-silent cooling fan blade and a cooling fan, wherein triangular or triangular-like bulges or pits are uniformly arranged on the surface of the blade along the wind cutting direction and the wind outlet direction. The ultra-silent cooling fan blade and the cooling fan provided by the utility model have the advantages that the triangular or triangular-like bulges or pits are arranged on the surface of the fan blade in an array manner, so that tiny turbulence is formed on the surface of the bulges or pits when the fan runs, the turbulence is uniformly formed, fluid is blown out from the surface of the bulges or pits more tightly, the low-pressure area is reduced, the resistance is reduced, the air flow is more stable, the air supply distance is longer, the occurrence of resonance can be restrained, and the noise is reduced.

Inventors

  • Qu yongtong
  • Wen Guangran
  • HUANG SHANGHUA
  • LONG YUJIE
  • Feng Baini

Assignees

  • 广东晟辉科技股份有限公司

Dates

Publication Date
20260512
Application Date
20250527

Claims (10)

  1. 1. A super-silent cooling fan blade is characterized in that triangular or triangular-like bulges (11) or pits are uniformly arranged on the surface of the fan blade (10) along the wind cutting direction and the wind outlet direction.
  2. 2. The ultra-silent cooling fan blade according to claim 1, wherein the triangular protrusions (11) are 0.1-0.5 mm in height, 1-3 mm in side length, and the distance between adjacent protrusions (11) is 2-5 mm.
  3. 3. The ultra-silent cooling fan blade according to claim 1, wherein the vertex of the triangular protrusion (11) on the surface of the blade (10) along the air outlet direction faces the rotation direction of the blade (10), and the base angle of the protrusion (11) is 30-60 °.
  4. 4. The ultra-silent cooling fan blade according to claim 1, wherein a plurality of tooth-like structures (13) are arranged on the other side of the blade (10) corresponding to the wind cutting direction.
  5. 5. The ultra-silent radiator fan blade according to claim 1, wherein the outer edge of the blade (10) is of a wave-like streamline profile.
  6. 6. The ultra-silent cooling fan blade according to claim 1, wherein the hub surface of the blade (10) is provided with a conical screw structure (14).
  7. 7. The ultra-silent radiator fan blade according to claim 1, wherein the triangular-like protrusions (11) are trapezoidal protrusions (11) or protrusions (11) resembling the shape of a shark trunk.
  8. 8. A radiator fan, characterized in that it comprises an ultra-silent radiator fan blade (10) according to any one of claims 1 to 5.
  9. 9. The cooling fan according to claim 8, further comprising a rotor shaft core (20) and a stator assembly (30), wherein the fan blade (10) is provided with a fan blade seat (12), the fan blade seat (12) is arranged around the stator assembly (30) and is fixed on the rotor shaft core (20) at the center, a motor shell (40) is arranged on an inner cylindrical surface of the fan blade seat (12), and a plurality of magnetic strips (50) are arranged in the motor shell (40).
  10. 10. The cooling fan according to claim 9, further comprising an oil-containing bearing (60), wherein the rotor shaft core (20) is disposed through a shaft hole of the oil-containing bearing (60), a shaft core snap ring (70) is disposed at one end of the rotor shaft core (20) to position the oil-containing bearing (60), and an anti-friction washer (80) is disposed between the shaft core snap ring (70) and the oil-containing bearing (60).

Description

Super-silent radiator fan flabellum and radiator fan Technical Field The utility model relates to the technical field of cooling fans, in particular to an ultra-silent cooling fan blade and a cooling fan. Background The traditional cooling fan is easy to cause noise superposition due to resonance when running, so that the noise is larger, the surface of the fan blade is smooth, fluid is easy to quickly separate after passing through the fan blade, a low-pressure area is formed, the resistance is greatly increased, the wind speed is reduced, the air supply distance is reduced, turbulence is uneven due to unreasonable design of the fan blade, and the resistance is increased and additional noise is caused. Therefore, there is a need to solve the above-mentioned technical problems. Disclosure of Invention The utility model aims at the technical problems and provides an ultra-silent cooling fan blade and a cooling fan, wherein triangular or triangular-like bulges or pits are arranged on the surface of the fan blade in an array manner, so that tiny turbulence is formed on the surfaces of the bulges or pits when the fan runs, the turbulence is uniformly formed, fluid is blown out from the surface of the bulges or pits, thereby reducing a low-pressure area, reducing resistance, ensuring that the air flow is more stable, ensuring that the air supply distance is longer, inhibiting resonance and reducing noise. In order to achieve the above purpose, the technical scheme of the utility model is as follows: A super-silent radiator fan blade, the fan blade surface is equipped with triangle-shaped or class triangle-shaped arch or pit along cutting wind direction and the direction of air-out even array. The triangular or triangular-like bulges or pits on the surfaces of the blades of the ultra-silent cooling fan have the functions of improving wind force (aerodynamic optimization design) to ensure that wind blows out farther after passing through the air duct, and can form tiny turbulence on the surfaces of the bulges or pits when the fan runs, and the turbulence is uniformly formed to ensure that fluid is blown out closer to the surfaces, thereby reducing a low-pressure area, reducing resistance, ensuring that the air flow is more stable, ensuring that the air supply distance is longer, inhibiting resonance and reducing noise. According to a further optimization scheme, the height of the triangular protrusions is 0.1-0.5 mm, the side length is 1-3mm, and the distance between adjacent protrusions is 2-5 mm. Triangular protrusions of this size more effectively enhance wind pressure stability. According to a further optimization scheme, the top points of the triangular protrusions on the surface of the fan blade along the air outlet direction face the rotating direction of the fan blade, and the bottom angles of the protrusions are 30-60 degrees. The triangular projections are arranged in this way, which is advantageous for optimizing turbulence generation and reducing the risk of boundary layer separation. According to a further optimization scheme, a plurality of tooth-shaped structures are arranged on the other side of each fan blade, which corresponds to the wind cutting direction. The tooth-shaped structure increases the surface area of the fan blade, enhances the aerodynamic effect, improves the torque and the lift force of the fan blade, thereby improving the efficiency and the performance of the fan, can also improve the stability of the fan blade, changes the structure of the fan blade, can be more stable when rotating, is not easy to generate unstable phenomena such as torsion and the like, and can reduce the turbulence generated by fluid, thereby reducing the generation of noise. In a further optimization scheme, the outer edges of the fan blades are wavy streamline outlines. The structural design of the butterfly wing is simulated by the wavy streamline outline, and the simulation software shows that a noise source exists at the outermost periphery of the fan blade, so that the wing structure is designed at present, and the noise is reduced continuously. Further optimizing scheme, the wheel hub face of flabellum is equipped with conical helicitic texture. When the fluid flows through the fan blades, the conical thread structure on the hub surface enables the fluid to adhere to the wall, ensures stability, reduces turbulence and vortex, and accordingly reduces noise ‌, and the conical thread can better disperse centrifugal force generated by the fan and reduce vibration ‌. Further optimizing scheme, the triangular-like bulges are trapezoidal bulges or bulges similar to the shape of a shark body. The trapezoid bulges or the bulges similar to the shape of the trunk of the shark have the functions of reducing air flow resistance and enhancing wind pressure stability, and the air supply distance is increased. A cooling fan comprises any one of the ultra-silent cooling fan blades. The rotor blade comprises a rotor shaf