CN217761437U - Impeller and heat radiation fan with same - Google Patents

Abstract

The utility model provides a fan wheel and have radiator fan of this fan wheel for solve the current not good problem of fan wheel air current smooth and easy degree of flowing. The impeller includes: a hub; a plurality of fan blades arranged around the hub, each fan blade having a blade root end and a blade tail end opposite to each other, each blade root end being connected to the hub, each fan blade having a windward surface and a leeward surface; and a plurality of convex particles distributed on the plurality of fan blades, wherein the windward side or/and the leeward side of each fan blade is provided with at least one convex particle, and the outer diameter of each convex particle is 30-80% of the maximum height of the fan blade.

Description

Fan wheel and cooling fan with same

Technical Field

The present invention relates to a fan, and more particularly to a fan wheel and a heat dissipation fan having the same.

Background

The prior fan wheel can be connected with a hub by a rotating shaft, the hub is provided with a side wall, and a plurality of fan blades of the fan wheel are respectively connected with the outer wall of the side wall by one end; thus, the heat dissipation fan with the conventional fan wheel can be assembled and positioned in a system such as a pen power system, an air conditioner or a ventilation device, and the like, so as to generate air flow by driving wind through the plurality of fan blades.

Although the existing fan wheel can be used for driving air flow; however, since the entire surface of the blades from the blade root to the blade tail is flat, turbulent flow is easily formed when the airflow is large, and thus the airflow flowing between two adjacent blades is relatively turbulent, which causes poor flow smoothness of the airflow entering and exiting the fan, resulting in difficulty in effectively increasing the air volume of the conventional impeller and difficulty in reducing the operating noise.

In view of the above, there is still a need for improvement of the existing fan wheel.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a fan wheel and a heat dissipation fan having the same, which can increase the air volume, save energy and reduce the noise of fan operation.

The present invention provides a fan wheel and a heat dissipation fan having the same, which can reduce the influence of air resistance on the fan blades to cause vibration or deformation.

Another object of the present invention is to provide a fan wheel and a heat dissipation fan having the same, which can reduce the manufacturing cost.

Another objective of the present invention is to provide a fan wheel and a heat dissipation fan having the same, which can avoid the formation of turbulent flow or wind shear.

In the present invention, the directions or the similar terms thereof, such as "front", "back", "left", "right", "top", "bottom", "inner", "outer", "side", etc., refer to the directions of the drawings, and the directions or the similar terms thereof are only used to assist the explanation and understanding of the embodiments of the present invention, but not to limit the present invention.

The components and members described throughout the present invention use the term "a" or "an" only for convenience and to provide a general meaning of the scope of the present invention; in the present invention, it is to be understood that one or at least one is included, and a single concept also includes a plurality unless it is obvious that other meanings are included.

The present invention relates to a method for manufacturing a semiconductor device, and more particularly to a method for manufacturing a semiconductor device, which can be used for manufacturing a semiconductor device, and a semiconductor device manufactured by the method.

The utility model discloses a fan wheel, include: a hub; a plurality of fan blades arranged around the hub, each fan blade having a blade root end and a blade tail end opposite to each other, each blade root end being connected to the hub, each fan blade having a windward surface and a leeward surface; and a plurality of convex particles distributed on the plurality of fan blades, wherein the windward side or/and the leeward side of each fan blade is provided with at least one convex particle, and the outer diameter of each convex particle is 30-80% of the maximum height of the fan blade.

The utility model discloses a fan wheel, include: a hub; a plurality of fan blades arranged around the hub, each fan blade having a blade root end and a blade tail end opposite to each other, each blade root end being connected to the hub, each fan blade having a windward surface and a leeward surface; and a plurality of convex particles distributed on the plurality of fan blades, wherein the plurality of convex particles are positioned between the blade root end and the blade tail end and are more adjacent to the blade tail end, each fan blade is provided with at least one convex particle, each convex particle is provided with a convex surface and a concave surface, the convex surface is positioned on the windward side, and the concave surface is positioned on the leeward side.

The utility model discloses a cooling fan, include: a fan frame having a base with a shaft tube; a stator located at the periphery of the shaft tube; and the fan wheel is rotatably arranged on the shaft tube.

Therefore, the utility model discloses a fan wheel and have radiator fan of this fan wheel, the windward side or the lee side that utilizes each flabellum has an at least this protruding grain, and the external diameter of this protruding grain is 30 ~ 80% of this flabellum maximum height, each protruding grain can be flowed through to the air current that flows in between the double-phase adjacent flabellum, so, can avoid forming the vortex or produce the wind situation of cutting, and then can reduce the too big noise that causes of air current, can ensure simultaneously that the air current that these a plurality of flabellums revolve out is more unimpeded, even the motor is at low rotational speed, these a plurality of flabellums also can produce effective air current and flow, in order to maintain predetermined amount of wind, can have the promotion amount of wind, the efficiency of the energy can be saved and the fan operation noise is reduced.

Wherein, the plurality of convex particles can be positioned on the windward side of each fan blade. Therefore, the structure is simple and convenient to manufacture, and the effect of reducing the manufacturing cost is achieved.

Wherein, each convex particle and the surface of the convex particle can have a maximum protruding distance, and the maximum protruding distance can be 0.25-0.5 mm. Therefore, the airflow can easily flow through the surfaces of the convex particles, and the airflow can smoothly flow.

Each protrusion may have a center point, the blade may have a blade height passing through the center point, and a minimum distance may be provided between the protrusion and a bottom edge of the blade, and the minimum distance may be less than or equal to 1/4 of the blade height. Therefore, the structure is simple and convenient to manufacture, and the manufacturing cost is reduced.

Wherein, the convex particles can be in a hemispherical shape or a 1/4 spherical shape. Therefore, the airflow can easily flow through the surfaces of the convex particles, and the effect of enabling the airflow to flow smoothly is achieved.

The fan wheel can have an outer diameter, the number of the convex particles positioned on each fan blade is multiple, a gap can be formed between every two adjacent convex particles, and the gap can be larger than or equal to 0.5mm. Therefore, enough clearance can be provided for the air flow to pass through, and the effect of enabling the air flow to flow smoothly is achieved.

Wherein, the sizes of the plurality of convex particles positioned on each fan blade can be the same. Therefore, the structure is simple and convenient to manufacture, and the effect of reducing the manufacturing cost is achieved.

Wherein, the sizes of the plurality of convex particles positioned on each fan blade can be at least two different. Therefore, the airflow can flow through at least one convex particle, and the effect of avoiding forming turbulent flow or generating wind cutting is achieved.

Wherein the plurality of fan blades may be radially disposed around the hub. Therefore, the airflow can easily flow out from the space between the fan blades, and the airflow can smoothly flow.

The fan blades can be provided with a backward-swept section and a forward-swept section, the backward-swept section of each fan blade can be connected with the hub, each forward-swept section can be in an arc shape, and each backward-swept section can be in a straight line shape or an arc shape. Therefore, the airflow can easily flow out from the forward swept section of the fan blade, and the airflow can smoothly flow.

Wherein, the plurality of convex particles can be positioned on the leeward surface of each fan blade. Therefore, the structure is simple and convenient to manufacture, and the effect of reducing the manufacturing cost is achieved.

Wherein the outer diameter of the convex particles can be 1.5-3 mm. Therefore, the airflow can easily flow through the surfaces of the convex particles, and the airflow can smoothly flow.

The fan blade may have a virtual line, the radial distance from the virtual line to the blade tail end may be 1/2 of the total length of the fan blade, and the protrusion may be located between the virtual line and the blade tail end. Therefore, the airflow can be ensured to flow through the plurality of convex particles and then flow out from the tail end of the blade, and the effect of avoiding the formation of turbulent flow or wind shear is achieved.

The protruding particles can be located between the blade root end and the blade tail end and closer to the blade tail end. Therefore, the airflow can be ensured to flow through the plurality of convex particles and then flow out from the tail end of the blade, and the effect of avoiding the formation of turbulent flow or wind shear is achieved.

The fan wheel of the utility model can additionally comprise at least one connecting ring, and the connecting ring can be connected with the plurality of fan blades. Therefore, the connecting ring can stabilize the positions of the plurality of fan blades, can prevent the fan blades from shaking in high-speed operation, and has the effect of reducing the vibration or deformation of the fan blades due to the influence of air resistance.

Wherein the connection ring may be located at the blade tail end or between the blade root end and the blade tail end. Therefore, the connecting ring can be ensured to have enough strength to stabilize each fan blade, and the effect of improving the rotation stability of the fan wheel is achieved.

Drawings

FIG. 1: the utility model is an exploded perspective view of a preferred embodiment of the heat dissipation fan;

FIG. 2 is a schematic diagram: the utility model discloses a plane view of a first embodiment of the fan wheel;

FIG. 3: base:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of: a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5: the utility model discloses a partial section view of a second embodiment of the fan wheel;

FIG. 6: a partial cross-sectional view of a third embodiment of the fan wheel of the present invention;

FIG. 7: the third embodiment of the fan wheel of the utility model is a partial section view with a plurality of convex particles with different sizes;

FIG. 8: a plan view of a third embodiment of the impeller of the present invention;

FIG. 9: a plan view of a fourth embodiment of the fan wheel of the present invention;

FIG. 10: the utility model discloses a partial section three-dimensional view of a fourth embodiment of the fan wheel;

FIG. 11: the fifth embodiment of the impeller of the present invention is a plan view.

Description of the reference numerals

[ utility model ] to solve the problems

1: hub

11: ring wall

12: plate body

2: fan blade

2a root end of the blade

2b leaf end

2c top edge

2d bottom edge

21, sweep back section

22 forward swept section

3 convex particles

3a convex surface

3b concave surface

31 center point

4: connecting ring

5, fan frame

51 base

511 axle tube

6: stator

D is the outer diameter

F1 windward side

F2. Leeward side

H is the height of fan blade

L1 radial distance

L2 total length

M maximum height

N is a virtual line

P is a fan wheel

Q maximum protrusion distance

R is the direction of rotation

S minimum distance

X is the outer diameter of the impeller

Y is a rotating shaft.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below; in addition, the same reference numerals are used in different drawings to designate the same elements, and the description thereof will be omitted.

Please refer to fig. 2, which shows a first embodiment of the fan wheel P of the present invention, including a hub 1, a plurality of fan blades 2 and a plurality of protruding particles 3, wherein the plurality of fan blades 2 are disposed around the hub 1, and the plurality of protruding particles 3 are distributed on the plurality of fan blades 2.

Referring to fig. 1 and 2, a rotating shaft Y may be coupled to a central portion of the hub 1, and the present invention does not limit the material of the hub 1 and the structure and manner of the hub 1 connected to the rotating shaft Y. For example, the hub 1 may be injection-coated and combined with the rotating shaft Y, or combined with the rotating shaft Y in a manner of tight fit or laser welding, and in this embodiment, the hub 1 may be made of a metal material and is laser welded to the rotating shaft Y, so that the hub 1 and the rotating shaft Y can be stably combined. The hub 1 may have a ring wall 11 and a plate 12, the rotation axis Y is connected to the plate 12, the ring wall 11 is connected to the periphery of the plate 12, and the ring wall 11 can be used to combine the blades 2.

Referring to fig. 2 and 3, the overall height of the fan blades 2 preferably does not exceed the top surface of the hub 1, so as to reduce the overall axial height of the impeller P. These a plurality of flabellums 2 can have a relative root end 2a and a leaf tail end 2b respectively, and each flabellum 2 is held 2a by this root and is connected this wheel hub 1's rampart 11, in addition, these a plurality of flabellums 2 can have a relative apical margin 2c and a bottom edge 2d, and the interval between this apical margin 2c and this bottom edge 2d can be the equidistance, or by this root end 2a towards this leaf tail end 2b divergent, the utility model discloses all do not restrict, in this embodiment, the interval between this apical margin 2c and this bottom edge 2d is held 2a towards this leaf tail end 2b divergent by this root, makes these a plurality of flabellums 2 can produce great amount of wind. Each fan blade 2 has a windward surface F1 and a leeward surface F2, the windward surface F1 is defined as a surface of the fan blades 2 facing a rotation direction R, and the leeward surface F2 is defined as a surface of the fan blades 2 facing away from the rotation direction R.

Please refer to fig. 3, wherein the present invention does not limit the material of the plurality of fan blades 2, the plurality of fan blades 2 and the ring wall 11 can be made of the same material or different materials, and the plurality of fan blades 2 and the hub 1 can be connected by buckling, adhering, welding, embedding or integral forming, etc. in this embodiment, the plurality of fan blades 2 and the hub 1 can be integrally connected by injection molding to improve the structural strength and the production efficiency. Moreover, each fan blade 2 may have a virtual line N, and the radial distance L1 from the virtual line N to the blade tail end 2b may be 1/2 of the total length L2 of the fan blade 2.

Referring to fig. 3 and 4, the windward side F1 and/or the leeward side F2 of each fan blade 2 has at least one protruding particle 3, that is, the protruding particles 3 may be located on the windward side F1 or the leeward side F2, or the protruding particles 3 may be located on the windward side F1 and the leeward side F2 at the same time, in this embodiment, the protruding particles 3 are located on the windward side F1, so that the windward side F1 of each fan blade 2 may have a protruding particle 3, the outer diameter D of the protruding particle 3 is 30 to 80% of the maximum height M of the fan blade 2, the outer diameter D of the protruding particle 3 may be 1.5 to 3 mm, and the protruding particle 3 may be located between the virtual line N and the blade tail end 2b, preferably, the protruding particle 3 may be located between the blade root end 2a and the blade tail end 2b and is closer to the blade tail end 2b, so as to ensure that the air flow from the blade tail end 2b can flow through the motor at a low speed, and prevent the noise generated by the turbulent air flow generated by the motor.

The protruding particles 3 can be hemispherical or 1/4 spherical, and a maximum protruding distance Q can be provided between each protruding particle 3 and the surface of the protruding particle 3, in this embodiment, the protruding particles 3 are located on the windward side F1, the maximum protruding distance Q refers to the distance between each protruding particle 3 and the windward side F1 of the fan blade 2, and the maximum protruding distance Q can be preferably 0.25-0.5 mm, so that the airflow can easily flow through the surface of the protruding particle 3, and the airflow flowing smoothness function is provided. In addition, each protrusion 3 may have a central point 31, the fan blade 2 may have a blade height H through the central point 31, and since the blade height H is located between the blade root end 2a and the blade tail end 2b and is closer to the blade tail end 2b, and the distance between the top edge 2c and the bottom edge 2d gradually expands from the blade root end 2a to the blade tail end 2b, in this embodiment, the blade height H is equal to the maximum height M of the fan blade 2, the protrusion 3 may have a minimum distance S with the bottom edge 2d of the fan blade 2, and the minimum distance S is preferably less than or equal to 1/4 of the blade height H, so that the airflow can easily flow through the surface of the protrusion 3, and the airflow flowing effect is smooth.

Please refer to fig. 2, particularly, the fan wheel P of the present invention may further include at least one connection ring 4, the connection ring 4 may connect the plurality of fan blades 2, the connection ring 4 may be located at the blade tail end 2b, the connection ring 4 may connect the top edge 2c or the bottom edge 2d of the plurality of fan blades 2, or may selectively connect any position between the top edge 2c and the bottom edge 2d, in this embodiment, the connection ring 4 may connect the top edge 2c, the connection ring 4 may stabilize the position of the plurality of fan blades 2, so as to avoid the fan blades 2 from shaking during high-speed operation, and reduce the vibration or deformation caused by the influence of air resistance on the fan blades 2 during the rotation of the fan wheel P.

Please refer to fig. 5, which shows a second embodiment of the fan wheel P of the present invention, the second embodiment of the present invention is substantially the same as the first embodiment, in the second embodiment, each protruding particle 3 can have a protruding surface 3a and a recessed surface 3b, the protruding surface 3a can be located on the windward side F1, the recessed surface 3b can be located on the leeward side F2, so that the protruding particles 3 form a whole structure with the same thickness, thus, the airflow flowing into between two adjacent fan blades 2 can flow through the protruding surface 3a of each protruding particle 3, which can reduce the condition of airflow disorder or turbulence, further can increase the air volume and ensure that the airflow rotated out by the fan blades 3 is not hindered, thereby, even if the motor is at a low rotation speed, the fan blades 2 can also generate effective airflow to maintain the predetermined air volume.

Referring to fig. 3 and 5, it should be noted that the convex particles 3 of the present embodiment may be formed in a structure with a uniform thickness, or may be combined with some of the above-mentioned embodiments. In other words, the radial distance L1 from the virtual line N to the blade tail end 2b disclosed in the first embodiment (as shown in fig. 3 and 4) may be 1/2 of the total length L2 of the blade 2, the protruding particle 3 may be located between the virtual line N and the blade tail end 2b, the outer diameter D of the protruding particle 3 may be 1.5-3 mm, the maximum protruding distance Q may be 0.25-0.5 mm, the minimum distance S is preferably less than or equal to 1/4 of the blade height H, and the connection ring 4 may be located at the blade tail end 2b, which is also applicable to this embodiment.

Referring to fig. 6, 7 and 8, a third embodiment of the impeller P of the present invention is substantially the same as the first embodiment, in the third embodiment, the plurality of blades 2 can be radially disposed around the hub 1, so that the airflow can easily flow out from between the blades 2, and the number of the protruding particles 3 located on each blade 2 can be plural, the impeller P can have an impeller outer diameter X, a gap G can be formed between two adjacent protruding particles 3, the gap G can be preferably greater than or equal to 0.5mm, so that a sufficient gap G can be provided for the airflow to pass through, and the airflow can smoothly flow, and in other embodiments, the gap G can be adjusted according to the impeller outer diameter X. In addition, the sizes of the plurality of convex particles 3 may be the same as shown in fig. 6, or the sizes of the plurality of convex particles 3 may be at least two different as shown in fig. 7, which is not limited by the present invention.

Referring to fig. 9 and 10, a fourth embodiment of the fan wheel P of the present invention is substantially the same as the third embodiment described above, in the fourth embodiment, the connection ring 4 is located between the blade root end 2a and the blade tail end 2b, each blade 2 has a swept back section 21 and a swept forward section 22, the swept back section 21 of each blade 2 can be adjacent to the blade root end 2a, the swept back section 21 of each blade 2 is connected to the hub 1, the swept forward section 22 of each blade 2 can be adjacent to the blade tail end 2b, the extending direction of each swept forward section 22 is the same as the rotating direction R of the fan wheel P, the extending direction of each swept back section 21 is opposite to the rotating direction R of the fan wheel P, each swept back section 21 and each swept forward section 22 can be linear or linear, the present invention is not limited, in the present embodiment, each forward swept forward section 22 can be linear, each backward swept back section 21 can be linear, and each forward swept back section 21 can be linear, and the air flow can be smooth from the blade tail end 2, and the air flow can be easily caused by the linear or linear air flow of the blade tail end 2.

Referring to fig. 11, a fifth embodiment of the fan wheel P of the present invention is substantially the same as the first embodiment described above, in the fifth embodiment, the plurality of protruding particles 3 can be located on the lee side F2 of each fan blade 2, so that the structure is simple and easy to manufacture, and has the effect of reducing the manufacturing cost, and the air flow flowing into between two adjacent fan blades 2 can also flow through each protruding particle 3, so as to reduce the air flow disorder or turbulence, further improve the air volume and ensure that the air flow rotated out by the plurality of fan blades 3 is not obstructed, thereby, even if the motor is at a low rotation speed, the plurality of fan blades 2 can also generate effective air flow to maintain a predetermined air volume.

Referring to fig. 1 and 3, in a heat dissipation fan having a fan wheel P according to any of the above embodiments, the heat dissipation fan has a fan frame 5, the fan frame 5 has a base 51, the base 51 has a shaft tube 511, the fan wheel P is rotatably disposed on the shaft tube 511, and a stator 6 is disposed on an outer periphery of the shaft tube 511. Because the windward side F1 or/and the leeward side F2 of each fan blade 2 has at least one protruding grain 3, the outer diameter D of the protruding grain 3 is 30-80% of the maximum height M of the fan blade 2, when the fan wheel P rotates, the air flow flowing into between two adjacent fan blades 2 can flow through each protruding grain 3, which can reduce the condition of air flow disturbance or turbulent flow, further can improve the air volume and ensure that the air flow rotated out by the fan blades 3 is not obstructed, thereby, even if the motor is at a low rotation speed, the fan blades 2 can also generate effective air flow to maintain the predetermined air volume, and the energy-saving effect can be achieved.

To sum up, the utility model discloses a fan wheel and have radiator fan of this fan wheel, the windward side or the lee side that utilizes each flabellum has an at least this protruding grain, and the external diameter of this protruding grain is 30 ~ 80% of this flabellum maximum height, each protruding grain can be flowed through to the air current that flows in between the double-phase adjacent flabellum, so, can avoid forming the vortex or produce the situation that the wind is cut, and then can reduce the too big noise that causes of air current, can ensure simultaneously that the air current that these a plurality of flabellums screw out is more unhindered, even the motor is at low rotational speed, these a plurality of flabellums also can produce effective air current and flow, in order to maintain predetermined amount of wind, can have the promotion amount of wind, the energy can be saved and reduce the efficiency of fan operation noise.

Claims (18)

1. A fan wheel, comprising:

a hub;

the fan blades are arranged around the hub, each fan blade is provided with a blade root end and a blade tail end which are opposite, each blade root end is connected with the hub, and each fan blade is provided with a windward surface and a leeward surface; and

the plurality of convex particles are distributed on the plurality of fan blades, the windward side or/and the leeward side of each fan blade is provided with at least one convex particle, and the outer diameter of each convex particle is 30-80% of the maximum height of the fan blade.

2. The impeller of claim 1 wherein the plurality of beads are positioned on the windward side of each impeller blade.

3. A fan wheel according to claim 2 wherein each bead has a maximum protrusion distance from the surface on which the bead is located, the maximum protrusion distance being from 0.25 to 0.5mm.

4. The fan wheel of claim 1 wherein each nub has a center point, the fan blade has a blade height through the center point, the nub has a minimum distance from a bottom edge of the fan blade, the minimum distance is less than or equal to 1/4 of the blade height.

5. The impeller of claim 1 wherein the convex particles are hemispherical or 1/4 spherical.

6. The impeller of claim 1 wherein the impeller has an outer diameter, each of the plurality of lobes on each of the plurality of blades has a gap between adjacent lobes, the gap being greater than or equal to 0.5mm.

7. The impeller according to claim 6 wherein the plurality of lobes on each fan blade are the same size.

8. The impeller of claim 6 wherein the plurality of beads on each blade are at least two different sizes.

9. The impeller of claim 1 wherein the plurality of blades are radially disposed about the hub.

10. The impeller of claim 1 wherein each blade has a backward-swept section and a forward-swept section, the backward-swept section of each blade being connected to the hub, the forward-swept section being arcuate, and the backward-swept section being linear or arcuate.

11. The impeller of claim 1 wherein the plurality of beads are located on the leeward side of each impeller blade.

12. A fan wheel according to claim 1, wherein the outer diameter of the beads is 1.5 to 3 mm.

13. The impeller as claimed in claim 1, wherein the fan blade has a virtual line, the radial distance from the virtual line to the blade trailing end is 1/2 of the total length of the fan blade, and the protrusion is located between the virtual line and the blade trailing end.

14. The fan wheel of claim 13 wherein the nubs are located between and closer to the root end and the tail end.

15. The fan wheel according to any of claims 1 to 14, further comprising at least one connecting ring connecting the plurality of fan blades.

16. The fan wheel of claim 15 wherein the attachment ring is located at the blade tail end or between the blade root end and the blade tail end.

17. A fan wheel, comprising:

a hub;

the fan blades are arranged around the hub, each fan blade is provided with a blade root end and a blade tail end which are opposite, each blade root end is connected with the hub, and each fan blade is provided with a windward surface and a leeward surface; and

the plurality of convex particles are distributed on the plurality of fan blades, the plurality of convex particles are positioned between the blade root end and the blade tail end and are more adjacent to the blade tail end, each fan blade is provided with at least one convex particle, each convex particle is provided with a convex surface and a concave surface, the convex surface is positioned on the windward side, and the concave surface is positioned on the leeward side.

18. A heat dissipating fan, comprising:

a fan frame having a base with a shaft tube;

a stator located at the outer circumference of the shaft tube; and

a fan wheel according to any one of claims 1 to 17 rotatably mounted on the shaft tube.

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