TWM583000U - Blade, impeller using the blade, and heat dissipating fan using the impeller - Google Patents

Abstract

A blade comprises an upper surface, a lower surface facing away from the upper surface, and a connecting surface connecting the upper surface and the lower surface. The connecting surface is a fillet curved surface, and is smoothly connected with the upper surface, to reduce a flow field pressure between the blade and a frame. The flow field pressure of a heat dissipating fan is more evenly, thereby reducing a noise between the blade and the frame. The fillet curved surface can quicken a flow rate of gas between the blade and the frame, thereby improving a heat dissipation performance of a heat dissipating fan. The disclosure also provides an impeller using the blade, and a heat dissipating fan using the impeller.

Description

Fan blade, impeller applying the blade, and cooling fan applying the same

The present invention relates to a fan blade, an impeller to which the blade is applied, and a heat dissipation fan to which the impeller is applied.

With the rapid development of electronic technology, the heat-generating electronic components such as the central processing unit are running faster and faster, and the heat generated during operation is correspondingly increased. In order to dissipate the heat to ensure the normal operation of the electronic components, the industry uses heat dissipation. The fan dissipates heat from the electronic components. A conventional fan generally includes a stator, a rotor, an impeller, and a frame that houses the stator and the rotor. A conventional impeller includes a wheel housing and a fan blade disposed on the wheel housing. However, the conventional blade edge has a pointed shape, which makes the heat dissipation fan susceptible to noise.

In view of this, it is necessary to provide a new fan blade to solve the above problem.

In addition, it is also necessary to provide an impeller to which the blade is applied.

In addition, it is necessary to provide a heat dissipation fan to which the above impeller is applied.

A blade includes an upper surface, a lower surface opposite the upper surface, and a peripheral surface connecting the upper surface and the lower surface, the peripheral surface being a rounded curved surface, the peripheral surface being smoothly connected to the upper surface.

Preferably, the peripheral surface is also smoothly connected to the lower surface.

An impeller includes a body and a plurality of blades extending radially outwardly disposed on an outer circumference of the body, the blade including an upper surface, a lower surface opposite the upper surface, and a connecting upper surface And a peripheral surface of the lower surface, the peripheral surface being a rounded curved surface, the peripheral surface being smoothly connected to the upper surface.

Preferably, the peripheral surface is also smoothly connected to the lower surface.

Preferably, the body comprises a top plate and a cylindrical side portion extending vertically downward from a periphery of the top plate.

Preferably, at least one holding portion is formed on the top plate, and the holding portion and the cylindrical side portion are located on the same side of the top plate.

A cooling fan includes a fan frame and a stator and a rotor mounted in the fan frame, the rotor including an impeller, the impeller includes a body and a plurality of radially extending outwardly disposed on an outer circumference of the body a blade, the blade includes an upper surface, a lower surface opposite the upper surface, and a peripheral surface connecting the upper surface and the lower surface, the peripheral surface being a rounded curved surface, the peripheral surface being smoothly connected to the upper surface .

Preferably, the peripheral surface is also smoothly connected to the lower surface.

Preferably, the body comprises a top plate and a cylindrical side portion extending vertically downward from a periphery of the top plate.

Preferably, the rotor comprises a wheel housing, the wheel housing comprises a circular top wall and a cylindrical side wall extending vertically downward from the periphery of the top wall, the body is sleeved on the wheel housing, and the The top plate is disposed opposite the top wall, and the cylindrical side portion is disposed opposite to the cylindrical side wall.

The peripheral surface of the blade of the impeller of the cooling fan of the present invention is a rounded curved surface, and the peripheral surface is smoothly connected with the upper surface, and is a plane intersecting the upper surface and the lower surface with respect to a peripheral surface of the conventional blade. The rounded surface design of the fan blade of the present invention can effectively reduce the flow field pressure between the fan blade and the fan frame during the operation of the cooling fan, thereby making the flow field pressure of the cooling fan more uniform, thus effectively reducing the work of the cooling fan. The noise generated between the fan blade and the fan frame. And the rounded surface design of the peripheral surface of the fan blade can accelerate the gas flow rate between the fan blade and the fan frame, thereby increasing the wind speed and improving the performance of the cooling fan.

The technical solutions in the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

Referring to FIGS. 1 to 3 , a preferred embodiment of the present invention provides a heat dissipation fan 100 including a fan frame 10 and a stator 20 and a rotor 30 mounted in the frame 10 .

The fan frame 10 includes a hollow frame 11 and a base 12 disposed at the center of the bottom of the frame 11.

The base 12 and the frame 11 may be integrally formed, and may be connected and fixed by other means, such as engagement.

The fan frame 10 further includes a barrel 13 mounted on the base 12. The stator 20 is mounted on the base 12 and the shaft barrel 13, and includes a stator core 21, a coil 22, a circuit board 23, and an insulating frame 24. The insulating frame 24 is made of an insulating material such as plastic or the like and is coated on the outside of the associated stator core 21. The coil 22 is wound around the insulating frame 24. The circuit board 23 is disposed at the bottom of the insulating frame 24 and electrically connected to the coil 22 .

The rotor 30 includes a wheel housing 31, a rotating shaft 32, a magnetic group 33 and an impeller 34.

The wheel housing 31 includes a circular top wall 311 and a cylindrical side wall 312 extending vertically downward from the periphery of the top wall 311. The center of the top wall 311 protrudes downward to form a shaft seat 313. One end of the rotating shaft 32 is mounted on the shaft seat 313, and the rotating shaft 32 extends vertically downward from the shaft seat 313. The rotating shaft 32 is rotatably mounted on the shaft barrel 13. The top wall 311 further defines at least one positioning hole 3111 around the shaft seat 313.

The magnetic group 33 is mounted on an inner surface of the cylindrical side wall 312.

The impeller 34 is disposed on the wheel housing 31. The impeller 34 includes a body 341 and a plurality of blades 342 extending radially outwardly from the outer periphery of the body 341.

The body 341 includes a circular top plate 3411 substantially corresponding to the top wall 311 and a cylindrical side portion 3412 extending perpendicularly downward from the periphery of the top plate 3411 and substantially corresponding to the cylindrical side wall 312. The blades 342 are spaced apart from the outer side of the cylindrical side portion 3412 away from the cylindrical side wall 312.

At least one catching portion 3413 is formed on the top plate 3411. The holding portion 3413 and the cylindrical side portion 3412 are located on the same side of the top plate 3411. The holding portion 3413 is held in the positioning hole 3111 to fix the body 341. In at least one embodiment, the holding portion 3413 is first held in the positioning hole 3111 and then heat-melted to strengthen the fixing strength between the holding portion 3413 and the top wall 311.

The blade 342 is a curved structure.

The blade 342 includes an upper surface 3421, a lower surface 3422 opposite to the upper surface, and a peripheral surface 3423 connecting the upper surface 3421 and the lower surface 3422. In this embodiment, the upper surface 3421 and the lower surface 3422 are curved surfaces. The peripheral surface 3423 is a curved surface and is smoothly connected to the upper surface 3421 and the lower surface 3422. In other words, the peripheral surface 3423 of the blade 342 is a rounded curved surface. The rounded surface design of the fan blade 342 can effectively reduce the flow field pressure between the fan blade 342 and the fan frame 10 during operation of the heat dissipation fan 100, thereby making the flow field pressure of the heat dissipation fan 100 more uniform, thus effectively reducing The noise generated between the fan blade 342 and the fan frame 10 when the cooling fan 100 is in operation. Moreover, the rounded curved surface design of the peripheral surface 3423 of the blade 342 can accelerate the gas flow rate between the blade 342 and the fan frame 10, thereby increasing the wind speed and improving the performance of the cooling fan 100.

In an embodiment, the thickness of the blade 342 is uniform. In yet another embodiment, the thickness of the blade 342 may be non-uniform. Preferably, the thickness of the blade 342 is gradual.

The peripheral surface 3423 of the blade 342 of the impeller 34 of the cooling fan 100 of the present invention is a rounded curved surface. The peripheral surface 3423 is smoothly connected to the upper surface 3421 and the lower surface 3422, and is opposite to the peripheral surface of the conventional blade. The plane intersecting the upper surface and the lower surface, the rounded surface design of the blade 342 of the present invention can effectively reduce the flow field pressure between the fan blade 342 and the fan frame 10 when the cooling fan 100 is in operation, thereby making the cooling fan 100 The flow field pressure is more uniform, and thus, the noise generated between the fan blade 342 and the fan frame 10 during the operation of the heat dissipation fan 100 can be effectively reduced. Moreover, the rounded curved surface design of the peripheral surface 3423 of the blade 342 can accelerate the gas flow rate between the blade 342 and the fan frame 10, thereby increasing the wind speed and improving the performance of the cooling fan 100.

In addition, various other changes and modifications may be made by those skilled in the art in light of the technical concept of the present invention, and all such changes and modifications are intended to fall within the scope of the present invention.

100‧‧‧ cooling fan

10‧‧‧Fan frame

11‧‧‧ frame

12‧‧‧ Pedestal

13‧‧‧ shaft tube

20‧‧‧ Stator

21‧‧‧ Stator core

22‧‧‧ coil

23‧‧‧ Circuit board

24‧‧‧Insulation frame

30‧‧‧Rotor

31‧‧‧ Wheel shell

311‧‧‧ top wall

3111‧‧‧Positioning holes

312‧‧‧ cylindrical side wall

313‧‧‧ shaft seat

32‧‧‧ shaft

33‧‧‧ Magnetic Group

34‧‧‧ Impeller

341‧‧‧ Ontology

3411‧‧‧ top board

3412‧‧‧ cylindrical side

3413‧‧‧Keeping Department

342‧‧‧ fan leaves

3421‧‧‧ upper surface

3422‧‧‧ lower surface

3423‧‧‧Circumference

1 is a perspective view of a heat dissipation fan of a preferred embodiment of the present invention.

2 is a schematic cross-sectional view of the heat dissipation fan shown in FIG. 1 taken along the II-II direction.

Fig. 3 is a perspective view of the impeller shown in Fig. 1.

Claims (10)

a blade comprising an upper surface, a lower surface opposite the upper surface, and a peripheral surface connecting the upper surface and the lower surface, wherein the peripheral surface is a rounded curved surface, the peripheral surface and the The upper surface is smoothly connected. The blade according to claim 1, wherein the peripheral surface is also smoothly connected to the lower surface. An impeller includes a body and a plurality of blades extending radially outwardly disposed on an outer circumference of the body, the blade including an upper surface, a lower surface opposite the upper surface, and a connecting upper surface And a peripheral surface of the lower surface, wherein the peripheral surface is a rounded curved surface, and the peripheral surface is smoothly connected to the upper surface. The impeller according to claim 3, wherein the peripheral surface is also smoothly connected to the lower surface. The impeller according to claim 3, wherein the body comprises a top plate and a cylindrical side portion extending vertically downward from a periphery of the top plate. The impeller according to claim 5, wherein the top plate is formed with at least one catching portion, the retaining portion and the cylindrical side portion being located on the same side of the top plate. A cooling fan includes a fan frame and a stator and a rotor mounted in the fan frame, the rotor including an impeller, the impeller includes a body and a plurality of radially extending outwardly disposed on an outer circumference of the body a fan blade, the blade includes an upper surface, a lower surface opposite to the upper surface, and a peripheral surface connecting the upper surface and the lower surface, wherein the peripheral surface is a rounded curved surface, and the peripheral surface is Said surface smooth connection. The heat dissipation fan of claim 7, wherein the peripheral surface is also smoothly connected to the lower surface. The heat dissipation fan of claim 7, wherein the body comprises a top plate and a cylindrical side portion extending vertically downward from a periphery of the top plate. The heat dissipation fan of claim 9, wherein the rotor comprises a wheel housing, the wheel housing includes a circular top wall and a cylindrical side wall extending vertically downward from a periphery of the top wall, The body is sleeved on the wheel housing, and the top plate is disposed opposite to the top wall, and the cylindrical side portion is disposed opposite to the cylindrical side wall.