TWI718440B - Fan wheel - Google Patents

Abstract

The present invention relates to a fan wheel of a fan. The fan wheel includes: a hub, a rotating shaft, a fan blade and a silent ring. The rotating shaft has an axial direction and is combined with the hub. The fan blade has a plurality of blades made of high molecular polymer, each of the blades has a thickness, the thickness is less than 0.1 mm, the number of the blades is greater than 70, and the silent ring is combined with the blades. In this way, in order to achieve thin and light weight and improve the effect of heat dissipation, ventilation or ventilation.

Description

Fan wheel

The present invention relates to a fan wheel of a fan.

The fan blades of the conventional fan wheel can be roughly divided into metal fan blades and plastic fan blades. Among them, metal fan blades are generally made by stamping and forming. Although they have better structural strength, the manufacturing cost of metal fan blades is relatively high, and it is not easy to design in the direction of thinness and light weight. Moreover, metal fan blades are rotated when they are rotated. It is also quite prone to noise. The manufacturing cost of plastic fan blades is lower, but if you want to design in the direction of thinness and light weight, the overall structural strength is relatively lower than that of metal fan blades. Therefore, it is necessary to improve the fan blade of the conventional fan wheel.

The present invention relates to a fan wheel of a fan. The fan wheel includes: a hub, a rotating shaft, a fan blade and a silent ring. The hub has a fixing hole. The rotating shaft has an axial direction, and the rotating shaft is arranged in the fixing hole of the hub. The fan blade has a plurality of blades made of high molecular polymer, the blades are arranged on the outer circumference of the hub in a ring-shaped interval, each of the blades has a thickness, the thickness is less than 0.1mm, and the The number of these leaves is more than 70. The silent ring is combined with the blades of the fan blade.

Therefore, by using the fan blade made of high molecular polymer, the thickness of the blades of the fan blade can be controlled to be less than 0.1mm, and the number of the blades can be controlled to be greater than 70, achieving thinness, light weight and Improve the effect of heat dissipation, ventilation or air exchange. In addition, the mute ring also has a mute function that can increase structural strength and reduce noise.

Fig. 1 shows a top three-dimensional external view of a fan wheel of a fan according to an embodiment of the present invention. Fig. 2 shows a bottom three-dimensional external view of a fan wheel of a fan according to an embodiment of the present invention. With reference to FIGS. 1 and 2, in one embodiment, the fan wheel 1 of the fan of the present invention includes a hub 10, a rotating shaft 20, a fan blade 30 and a silent ring 40.

Fig. 3 shows a three-dimensional exploded view of a fan wheel of a fan according to an embodiment of the present invention. Fig. 4 shows a sectional view of a fan wheel assembly of a fan according to an embodiment of the present invention. 3 and 4, in one embodiment, the hub 10 has a fixing hole 11, an inner side surface 10a and an outer side surface 10b opposite to each other. The rotating shaft 20 has an axial direction X1, and the rotating shaft 20 is disposed in the fixing hole 11 of the hub 10; wherein the fixing hole 11 of the hub 10 can penetrate the inner surface 10a and the outer surface 10b to effectively increase the The coupling area between the rotating shaft 20 and the hub 10 improves the coupling stability.

In one embodiment, the hub 10 and the rotating shaft 20 can be made of metal, and one end of the rotating shaft 20 can be optionally combined with the fixing hole 11 of the hub 10 by laser welding, except that the rotating shaft 20 can be further lifted. The stability of the combination with the hub 10 can effectively prevent the shaft 20 from falling off at will, and it can be easily assembled and combined with the fixing hole 11 to improve the ease of assembly.

1 to 4, in one embodiment, the hub 10 may have a base 101 and a side 102, the side 102 is connected to the periphery of the base 101, the base 101 of the hub 10 is in the inner The side surface 10a can be provided with several reinforcing parts 12 to effectively improve the structural strength of the hub 10. As shown in FIGS. 1 and 4, the hub 10 can be formed by metal stamping from the outer side surface 10b toward the inner side surface 10a, and the inner side surface 10a of the hub 10 forms the convex reinforcement portions 12 By this, when forming the reinforcing parts 12 by metal stamping, it has the advantage of easy forming and processing.

In one embodiment, the reinforcing portion 12 may have a ring rib 121 surrounding the periphery of the fixing hole 11; the design of the ring rib 121 can effectively strengthen the fixing hole 11 of the hub 10 The strength of the surrounding structure. Alternatively, the reinforcing portion 12 may have a plurality of ribs 122 extending from the periphery of the fixing hole 11 toward the direction of the side portion 102, and radially surrounding the periphery of the fixing hole 11; Utilizing the ribs 122 to extend and cover the inner side surface 10a of the base 101 can more effectively enhance the overall structural strength of the hub 10.

With reference to FIGS. 2 to 4, in one embodiment, the fan blade 30 has a ring 31 and several blades 32 made of high molecular polymer. In one embodiment, in addition to the aforementioned hub 10 being made of a metal material, the hub 10 can also be made of a polymer of the same material. Thereby, when the material of the hub 10 and the fan blade 30 are also selected high molecular polymers, they can be integrally injected and molded into the hub 10 and the fan blade 30 at the same time; wherein the ring body 31 can be omitted or not omitted, When the fan blade 30 has the ring body 31, the blades 32 are combined with the ring body 31, the ring body 31 can be combined with the hub 10, and the ring body 31 is directly disposed on the side 102 of the hub 10 to Strengthen the structural strength of the fan blade 30; when the ring body 31 is omitted, the blades 32 of the fan blade 30 can be directly integrally formed on the outer side of the hub 10 (not shown) to improve manufacturing convenience. Or, if the material of the wheel hub 10 is metal and the material of the fan blade 30 is selected polymer polymer, the fan blade 30 can be directly covered on the outer side surface 10b of the wheel hub 10 by injection molding, which can also improve the production It is convenient and ensures that the fan blade 30 can be firmly combined with the hub 10.

In one embodiment, the blades 32 are arranged on the outer periphery of the hub 10 in a ring-shaped interval, each of the blades 32 has a thickness T, the thickness T is less than 0.1 mm, and the thickness T may be further greater than or Equal to 0.02mm. In an embodiment, the thickness T may be greater than or equal to 0.05 mm and less than or equal to 0.09 mm. In one embodiment, the thickness T may be the thickness of each part of the blades 32, that is, the thickness of each part of the blades 32 is less than 0.1 mm. The number of the blades 32 is greater than 70, and the number of the blades 32 may be further less than or equal to 134. In one embodiment, the number of the blades 32 is 72. In one embodiment, the silent ring 40 is combined with the blades 32 of the fan blade 30.

The fan wheel 1 of the fan of the present invention utilizes the fan blade 30 made of high molecular polymer, which can have the advantages of relatively low manufacturing cost and easy molding, and the fan blade 30 after molding also has better structural strength. In particular, it is easier to form the fan blade 30 which is thinner and lighter in weight, so as to control the thickness T of the blades 32 of the fan blade 30 to be less than 0.1 mm. Furthermore, since the thickness T of the blades 32 is relatively small, the blades 32 can be arranged on the periphery of the ring body 31 relatively densely in a ring-shaped interval, so that the number of blades 32 can be greater than There are more than 70 pieces to ensure that the fan blade 30 can generate a larger air volume to achieve the effect of improving heat dissipation, ventilation or ventilation.

In one embodiment, the above-mentioned high molecular polymer may be a combination of liquid crystal high molecular polymer (Liquid Crystal Polymer) and carbon fiber (Carbon Fiber), or the high molecular polymer may be liquid crystal high molecular polymer and mineral fiber (Mineral Fiber) composition, or the high molecular polymer is a composition of liquid crystal high molecular polymer, glass fiber (Glass Fiber) and mineral fiber. In this way, the use of liquid crystal polymer, carbon fiber, glass fiber or mineral fiber has the advantages of good tensile strength, good heat resistance, etc., so that the fan blade 30 has the advantages of easy manufacturing, molding and thinning, and also has enough Structural strength.

4, in one embodiment, the ring body 31 has an opposite outer wall 31a and an inner wall 31b. The ring body 31 can be combined with the outer side surface 10b of the hub 10 by using the inner wall 31b; , To ensure that the ring body 31 of the fan blade 30 can be firmly combined with the hub 10, so as to effectively improve the stability of the combination of the fan blade 30 and the hub 10 with each other.

In one embodiment, each of the blades 32 of the fan blade 30 has a root portion 321 and an end portion 322 opposite to each other, and the blades 32 are connected to the outer wall 31 a of the ring body 31 by the root portion 321. Thereby, it is ensured that the blades 32 can be firmly combined with the ring body 31, so as to effectively improve the bonding stability between the blades 32 and the ring body 31, thereby effectively improving the overall structural strength of the fan blade 30.

In one embodiment, the ring body 31 is provided with a bottom surface 31 c between the outer wall 31 a and the inner wall 31 b, the bottom surface 31 c has a groove 311, and the groove 311 can be provided with a balance weight 312. Thereby, the balance weight 312 provided on the ring body 31 of the fan blade 30 is used to ensure that the fan blade 30 can rotate stably and balancedly during the rotation process, so as to avoid shaking and achieve the effect of improving the running quality. In one embodiment, the groove 311 of the ring body 31 may be a ring-shaped groove, and the balance weight 312 may be at least one piece and is disposed at one of the grooves 311 to reinforce the fan blade 30 The balance can ensure that the fan blade 30 has a better stable and balanced rotation effect.

Fig. 5 shows a bottom plan view of a fan wheel of a fan according to an embodiment of the present invention. 4 and 5, in one embodiment, the ring body 31 of the fan blade 30 has a first maximum outer diameter D1 in a circumferential direction X2, and the first maximum outer diameter D1 is greater than 17 mm; , Using the first maximum outer diameter D1 of the ring body 31 to be greater than 17mm, so that the outer wall 31a of the ring body 31 has a sufficient bonding area to provide a greater number of the blades 32 to be combined, and to prevent the The distance between the blades 32 is too small, so that the blades 32 can be smoothly supplied with air flow, so as to ensure that the blades 32 can provide better heat dissipation, ventilation or air exchange effects. Moreover, the blades 32 of the fan blade 30 have a second maximum outer diameter D2 in the circumferential direction X2, and the difference between the second maximum outer diameter D2 and the first maximum outer diameter D1 may be 10-40 mm; Thereby, using the structural design in which the difference between the second maximum outer diameter D2 and the first maximum outer diameter D1 is 10-40 mm, the blades 32 of the fan blade 30 will have sufficient air guiding area to effectively lift The air volume generated by the blades 32.

In an embodiment, the first maximum outer diameter D1 is 24.8 mm; and the second maximum outer diameter D2 is 38 mm, then the difference between the second maximum outer diameter D2 and the first maximum outer diameter D1 is 13.2 mm .

With reference to FIGS. 1 to 5, in one embodiment, the silent ring 40 is used to combine the blades 32 of the fan blade 30, so that the blades 32 and the silent ring 40 can be firmly combined, except that the fan wheel 1 is provided. In addition to better structural strength, it can also ensure that the blades 32 of the fan blade 30 are less likely to shake during the rotation of the fan wheel 1, so as to achieve the mute effect of reducing noise.

In one embodiment, the mute ring 40 can be combined between the root 321 and the end 322 of the blades 32, and the mute ring 40 is adjacent to the end 322. Therefore, when the mute ring 40 is adjacent to the end 322, the combination of the blades 32 and the mute ring 40 can be made more stable, so as to greatly improve the fixing and mute effect.

Fig. 6 shows a bottom three-dimensional external view of a fan wheel of a fan according to another embodiment of the present invention. Fig. 7 shows a sectional view of a fan wheel of a fan according to another embodiment of the present invention. 6 and 7, in an embodiment, the number of the blades 32 is 120, and the end portions 322 of the blades 32 each have a first end edge 322a and a second end edge 322b opposite to each other. And the blades 32 can be divided into a first blade group 32a and a second blade group 32b. The number of the first blade group 32a is 60 pieces; and the number of the second blade group 32b is 60 pieces. In the axial direction X1, the root portion 321 of the second blade group 32b is disposed between the bottom surface 31c of the ring body 31 and the root portion 321 of the first blade group 32a, and in the circumferential direction X2, the first blade group 32b A blade group 32a and the second blade group 32b are arranged in a staggered manner. In the embodiment shown in FIG. 6, the second end edge 322b of the first blade group 32a can be connected to one side of the mute ring 40, and the first end edge 322a of the second blade group 32b can be connected to the mute ring 40 On the other side of the ring 40, the mute ring 40 is located between the first blade group 32a and the second blade group 32b, that is, the mute ring 40 is disposed in the middle section of the blades 32.

Fig. 8 shows a bottom three-dimensional external view of a fan wheel of a fan according to another embodiment of the present invention. Fig. 9 shows a sectional view of a fan wheel assembly of a fan according to another embodiment of the present invention. Please refer to FIGS. 8 and 9, in an embodiment, the number of the blades 32 is 120, and the end portions 322 of the blades 32 each have the first end edge 322a and the second end edge 322b opposite to each other And the blades 32 can be divided into a first blade group 32a and a second blade group 32b. The number of the first blade group 32a is 60 pieces; and the number of the second blade group 32b is 60 pieces. In the axial direction X1, the root portion 321 of the second blade group 32b is disposed between the bottom surface 31c of the ring body 31 and the root portion 321 of the first blade group 32a, and in the circumferential direction X2, the first blade group 32b A blade group 32a and the second blade group 32b are arranged in a staggered manner. In one embodiment, the first end edge 322a of the end portion 322 of the blades 32 is disposed at a position away from the bottom surface 31c of the ring body 31, and the first end edge 322a of the end portion 322 of the blades 32 The two end edges 322b are arranged at positions close to the bottom surface 31c of the ring body 31. The first end edge 322a of the first blade set 32a and the first end edge 322a of the second blade set 32b can be connected to the same side of the mute ring 40, so that the mute ring 40 is arranged far away from the blades 32 The section of the ring body 31 in the direction of the bottom surface 31c. In one embodiment, the silent ring 40 can be arranged in the section of the blades 32 near the bottom surface 31c of the ring body 31, that is, the second end 322b and the second edge 322b of the first blade group 32a The second end 322b of the blade set 32b can be connected to the same side of the silent ring 40. Therefore, the silent ring 40 can be arranged in a section other than the middle section of the blades 32. Thereby, the number of the blades 32 can be relatively increased to improve the overall driving effect, and the mute ring 40 can also be used to effectively fix the first blade group 32a and the second blade group 32b, so that the fan wheel 1 When rotating, it can reduce the generation of improper noise and strengthen the structural strength of the blades.

In one embodiment, the silent ring 40 can be made of metal material to have better structural strength; or the silent ring 40 can be made of high molecular polymer, wherein the high molecular polymer can also be the above-mentioned liquid crystal high The composition of molecular polymer and carbon fiber; or the composition of liquid crystal polymer and mineral fiber; or the composition of liquid crystal polymer, glass fiber and mineral fiber.

FIG. 10 shows a schematic diagram of a fan wheel of a fan used in combination with a motor to form a cooling fan according to an embodiment of the present invention. With reference to 10, in one embodiment, the fan wheel 1 of the fan of the present invention can be a fan wheel of a centrifugal fan or an axial fan, the rotating shaft 20 is rotatably combined with a motor M, and the inner surface 10a of the hub 10 Combined with a permanent magnet M1; thereby, the motor M can drive the fan wheel 1 to rotate through the rotating shaft 20, so that the fan wheel 1 can be used to provide heat dissipation, ventilation, or ventilation functions, but not limited to the above. The fan wheel 1 of the fan can also be used for other appropriate purposes.

In the above embodiment, the fan wheel 1 of the fan of the present invention utilizes the fan blade 30 made of high molecular polymer, which has many advantages such as low manufacturing cost, easy molding and good structural strength, so as to control the fan blade 30 The thickness T of the blades 32 is less than 0.1 mm, and the number of blades 32 is controlled to be greater than 70, so that the fan wheel 1 is thin and lightweight, and the effects of heat dissipation, ventilation, or ventilation are improved. In addition, the design of the mute ring 40 can also achieve the mute effect of increasing structural strength and reducing noise.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but do not limit the present invention. Modifications and changes made by those skilled in the art to the above-mentioned embodiments still do not violate the spirit of the present invention. The scope of rights of the present invention should be listed in the scope of patent application described later.

1: Fan wheel 10: Wheel hub 10a: Inner side 10b: Outer side 101: Base 102: Side 11: Fixing hole 12: Reinforcement 121: Ring rib 122: Convex rib 20: Rotating shaft 30: Fan blade 31: Ring body 31a: outer wall 31b: inner wall 31c: bottom surface 311: groove 312: balance weight 32: blade 32a: first blade group 32b: second blade group 321: root 322: end 322a: first end edge 322b: Second edge 40: Silent ring D1: First largest outer diameter D2: Second largest outer diameter M: Motor M1: Permanent magnet T: Thickness X1: Axial X2: Circumferential direction

Figure 1 shows a top three-dimensional external view of a fan wheel of a fan according to an embodiment of the present invention;

Figure 2 shows a bottom three-dimensional external view of a fan wheel of a fan according to an embodiment of the present invention;

Fig. 3 shows a three-dimensional exploded view of a fan wheel of a fan according to an embodiment of the present invention;

Figure 4 shows a sectional view of a fan wheel assembly of a fan according to an embodiment of the present invention;

Figure 5 shows a bottom plan view of a fan wheel of a fan according to an embodiment of the present invention;

Figure 6 shows a bottom three-dimensional external view of a fan wheel of another embodiment of the present invention;

Figure 7 shows a sectional view of a fan wheel assembly of another embodiment of the present invention;

Figure 8 shows a bottom three-dimensional external view of a fan wheel of a fan according to another embodiment of the present invention;

Figure 9 shows a sectional view of a fan wheel assembly of another embodiment of the present invention; and

FIG. 10 shows a cross-sectional view of a fan wheel of a fan used in combination with a motor to form a cooling fan according to an embodiment of the present invention.

1: Fan wheel

10: Wheel hub

10a: inner side

101: base

102: side

11: Fixing hole

12: Strengthening Department

121: Ring Rib

122: Convex Rib

20: shaft

30: fan blade

31: Ring body

31a: outer wall

311: Groove

312: Balance weight

32: blade

321: Root

322: End

40: Mute ring

X1: axial

X2: circumferential direction

T: thickness

Claims (25)

A fan wheel of a fan includes: a hub with a fixing hole, the hub has an inner side and an outer side opposite to each other; a rotating shaft with an axial direction, the rotating shaft is arranged in the fixing hole of the hub; A fan blade has a plurality of blades made of high molecular polymer, the blades are arranged on the outer circumference of the hub in a ring-shaped interval, each of the blades has a thickness, the thickness is less than 0.1mm, and The number of the blades is greater than 70, the fan blade has a ring body made of high molecular polymer, the blades are combined with the ring body, and the ring body of the fan blade is in a circumferential direction around the axial direction Has a first maximum outer diameter, the first maximum outer diameter is greater than 17mm, the ring body has an outer wall and an inner wall opposite to each other, the ring system is connected to the outer side surface of the hub by the inner wall, and the fan blade The blades each have a root and one end, the blades are connected to the outer wall of the ring body by the root, the ring body is provided with a bottom surface between the outer wall and the inner wall, and the ends of the blades Each has a first end edge and a second end edge, and the blades are divided into a first blade group and a second blade group. In the axial direction, the root of the second blade group is arranged on the ring Between the bottom surface of the body and the root of the first blade group, in the circumferential direction, the first blade group and the second blade group are staggered; and a silent ring is combined with the blades of the fan blade . A fan wheel of a fan includes: a hub with a fixing hole, the hub has an inner side and an outer side opposite to each other; a rotating shaft with an axial direction, the rotating shaft is arranged in the fixing hole of the hub; A fan blade has a plurality of blades made of high molecular polymer, the blades are arranged on the outer circumference of the hub in a ring-shaped interval, each of the blades has a thickness, the thickness is less than 0.1mm, and The number of the blades is greater than 70, the fan blade has a ring body made of high molecular polymer, the blades are combined with the ring body, and the ring body of the fan blade is in a circumferential direction around the axial direction Has a first maximum outer diameter, the first maximum outer diameter is greater than 17mm, the ring body has an outer wall and an inner wall opposite to each other, the ring system is connected to the outer side surface of the hub by the inner wall, and the ring body is A bottom surface is arranged between the outer wall and the inner wall, the bottom surface is provided with a groove, and the groove is provided with a balance weight; and a silent ring combined with the blades of the fan blade. Such as the fan wheel of the fan of claim 1 or 2, wherein the thickness of the blades of the fan blade is greater than or equal to 0.02 mm. Such as the fan wheel of the fan of claim 3, wherein the thickness of the blades of the fan blade is greater than or equal to 0.05 mm and less than or equal to 0.09 mm. For example, the fan wheel of the fan of claim 1 or 2, wherein the number of the blades of the fan blade is less than or equal to 134 pieces. For example, the fan wheel of the fan of claim 1 or 2, wherein the blades of the fan blade have a second maximum outer diameter in the circumferential direction, and the difference between the second maximum outer diameter and the first maximum outer diameter is 10~40mm. Such as the fan wheel of the fan of claim 1, wherein the silent ring is combined with the root of the blades and Between the ends, and the mute ring is adjacent to the end. Such as the fan wheel of claim 1, wherein the second end edge of the first blade group is connected to one side of the mute ring, and the first end edge of the second blade group is connected to the other side of the mute ring. Such as the fan wheel of claim 1, wherein the first end edge of the first blade group and the first end edge of the second blade group are connected to the same side of the silent ring. Such as the fan wheel of claim 1, wherein the second end edge of the first blade group and the second end edge of the second blade group are connected to the same side of the silent ring. Such as the fan wheel of claim 2, wherein the groove of the ring body is a ring-shaped groove, and the balance weight is at least one piece. For example, the fan wheel of the fan of claim 1 or 2, wherein the hub has an inner side surface and an outer side surface opposite to each other, and the fixing hole of the hub penetrates the inner side surface and the outer side surface. Such as the fan wheel of the fan of claim 12, wherein one end of the rotating shaft is joined to the fixing hole of the hub by laser welding. For example, the fan wheel of claim 1 or 2, wherein the hub has a base and a side portion, the side portion is connected to the periphery of the base portion, and the ring body is arranged on the side portion of the hub. For example, the fan wheel of the fan of claim 14, wherein the hub has an inner side and an outer side opposite to each other, and the base of the hub is provided with a plurality of reinforcing parts on the inner side. Such as the fan wheel of claim 15, wherein the reinforcing portion has a ring rib surrounding the periphery of the fixing hole. For example, the fan wheel of the fan of claim 15, wherein the reinforcing portion has a plurality of ribs extending from the periphery of the fixing hole toward the direction of the side portion, and radially surrounding the fixing hole provided Surrounding. Such as the fan wheel of the fan of claim 15, wherein the hub is made of metal material. Such as the fan wheel of claim 18, wherein the hub is formed from the outer side surface toward the inner side surface in a metal stamping manner, and the convex-shaped reinforcement portions are formed on the inner side surface of the hub. For example, the fan wheel of the fan of claim 1 or 2, wherein the mute ring is made of metal material. Such as the fan wheel of the fan of claim 1 or 2, wherein the hub is made of high molecular polymer. Such as the fan wheel of the fan of claim 1 or 2, wherein the mute ring is made of high molecular polymer. Such as the fan wheel of claim 1 or 2, wherein the high molecular polymer is a combination of liquid crystal high molecular polymer and carbon fiber. Such as the fan wheel of claim 1 or 2, wherein the high molecular polymer is a combination of liquid crystal high molecular polymer and mineral fiber. Such as the fan wheel of claim 1 or 2, wherein the high molecular polymer is a combination of liquid crystal high molecular polymer, glass fiber and mineral fiber.

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