TW202020312A - Fan wheel of fan - Google Patents

Abstract

The utility model relates to a fan wheel of a fan. The fan wheel comprises a hub, a rotating shaft, a fan blade and a mute ring, the rotating shaft is provided with an axial direction and is combinedwith the hub; the fan blade is provided with a plurality of blades made of high-molecular polymer, each blade is provided with a thickness which is smaller than 0.1 mm, the number of the blades is larger than 70, and the mute ring is combined with the blades. Therefore, the effects of thinness, light weight, improvement of heat dissipation, ventilation or air exchange effects and the like are achieved.

Description

Fan wheel

The invention relates to a fan wheel of a fan.

The blades of the conventional fan wheel can be roughly divided into metal blades and plastic 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 higher, and it is not easy to design toward thin and light weight. Furthermore, when the metal fan blades rotate It is also quite susceptible to noise. The manufacturing cost of plastic fan blades is lower, but if you want to design in the direction of thin 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 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 disposed in the fixing hole of the hub. The fan blade has a plurality of blades made of high molecular polymer, the blades are arranged in a ring-shaped interval on the outer periphery of the hub, the blades each have a thickness, the thickness is less than 0.1 mm, and the The number of these leaves is greater than 70. The mute ring combines 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 0.1 mm, and the number of the blades arranged to be greater than 70 pieces can be controlled to achieve thin and light weight and Improve the effects of heat dissipation, ventilation or ventilation. In addition, the mute ring also has a mute effect that can increase structural strength and reduce noise.

FIG. 1 shows a top perspective view of a fan wheel of an embodiment of the invention. FIG. 2 shows a bottom perspective view of a fan wheel of an embodiment of the 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 mute ring 40.

FIG. 3 shows an exploded perspective view of a fan wheel of a fan according to an embodiment of the invention. FIG. 4 shows a combined cross-sectional view of a fan wheel of an embodiment of the invention. Referring to FIGS. 3 and 4, in one embodiment, the hub 10 has a fixing hole 11, an opposite inner side surface 10 a and an outer side surface 10 b. 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 side surface 10a and the outer side surface 10b to effectively increase the The joint area between the rotating shaft 20 and the hub 10 improves the joint stability.

In an 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 fixed hole 11 of the hub 10 by laser welding, in addition to further enhancing the rotating shaft 20 The stability of the coupling with the hub 10 can effectively prevent the rotating shaft 20 from falling off arbitrarily, and the rotating shaft 20 can be easily assembled with the fixing hole 11 to improve assembly convenience.

With reference to FIGS. 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, and the base 101 of the hub 10 is inside Several reinforcements 12 can be provided on the side surface 10a to effectively improve the structural strength of the hub 10. As shown in FIGS. 1 and 4, the hub 10 can be selected by metal stamping from the outer side surface 10b toward the inner side surface 10a, and the convex portions 12 are formed on the inner side surface 10a of the hub 10 In this way, when these reinforcements 12 are formed by metal stamping, they have the advantage of easy molding.

In an embodiment, the reinforcing portion 12 may have a ring rib 121 that surrounds 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 surrounding structural strength. Alternatively, the reinforcing portion 12 may have a plurality of ribs 122 that extend from the periphery of the fixing hole 11 toward the side portion 102 and radially surround the periphery of the fixing hole 11; By using the convex ribs 122 to extend the inner side surface 10a of the base 101, the overall structural strength of the hub 10 can be more effectively improved.

With reference to FIGS. 2 to 4, in one embodiment, the fan blade 30 has a ring body 31 and a plurality of blades 32 made of a polymer. In an embodiment, the hub 10 can be made of metal material, and the hub 10 can also be made of polymer material of the same material. In this way, when the materials of the hub 10 and the fan blade 30 are also selected from high molecular polymers, the hub 10 and the fan blade 30 can be manufactured by integral injection molding; 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 portion 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 the convenience of manufacturing. Alternatively, if the material of the hub 10 is metal and the material of the blade 30 is a polymer, then the blade 30 can be directly coated on the outer side surface 10b of the hub 10 by injection molding, which can also improve the production Convenience, and ensure that the 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. The blades 32 each have a thickness T, the thickness T is less than 0.1 mm, and the thickness T can 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 an 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 pieces, and the number of the blades 32 may be further less than or equal to 134 pieces. In one embodiment, the number of the blades 32 is 72. In one embodiment, the silent ring 40 incorporates the blades 32 of the fan blade 30.

The fan wheel 1 of the fan of the present invention uses the fan blade 30 made of a polymer, which has 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 thin and lightweight fan blade 30 so that the thickness T of the blades 32 of the fan blade 30 is controlled to be less than 0.1 mm. Furthermore, since the thickness T of the blades 32 is relatively small, the blades 32 can be relatively densely arranged in an annular interval around the ring body 31, so that the number of the blades 32 can be greater than More than 70 pieces, so as to ensure that the fan blade 30 can generate a greater amount of air, to achieve the effect of improving heat dissipation, ventilation or ventilation.

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

Referring to FIG. 4, in one embodiment, the ring body 31 has an outer wall 31a and an inner wall 31b opposite to each other. The ring body 31 can be coupled to 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 coupling between the fan blade 30 and the hub 10 between each other.

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

In an embodiment, the ring body 31 is provided with a bottom surface 31c between the outer wall 31a and the inner wall 31b. The bottom surface 31c has a groove 311, and the groove 311 can be provided with a balance weight 312. In this way, 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 in a stable and balanced manner during rotation, so as to avoid sloshing and improve the operation 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 body 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 balanced rotation effect.

5 shows a bottom plan view of a fan wheel of a fan according to an embodiment of the invention. With reference to FIGS. 4 and 5, in one embodiment, the ring body 31 of the 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; , The first maximum outer diameter D1 of the ring body 31 is 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 combined, and can also prevent the The distance between the blades 32 is too small, so that the air flow can be smoothly conducted between the blades 32, ensuring that the blades 32 can provide better heat dissipation, ventilation or ventilation 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; In this way, by utilizing 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 wind guiding area to effectively improve The air volume generated by the blades 32.

In one 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, using the mute ring 40 to combine the blades 32 of the fan blade 30, the blades 32 can be firmly combined with the mute ring 40 except for providing the fan wheel 1 In addition to better structural strength, it is also possible to ensure that the blades 32 of the fan blade 30 are less likely to sway during the rotation of the fan wheel 1 to achieve the silent effect of reducing noise.

In an embodiment, the mute ring 40 may be coupled between the root 321 and the end 322 of the blades 32, and the mute ring 40 is adjacent to the end 322. In this way, when the mute ring 40 is adjacent to the end portion 322, the combination of the blades 32 and the mute ring 40 can be more stable, so as to greatly improve the fixing and mute effect.

FIG. 6 shows a bottom perspective view of the fan wheel of another embodiment of the invention. 7 is a cross-sectional view of a fan wheel of a fan according to another embodiment of the invention. Please refer to FIGS. 6 and 7. In one embodiment, the number of the blades 32 is 120, and the end portions 322 of the blades 32 each have a first end edge 322 a and a second end edge 322 b. 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; and the number of the second blade group 32b is 60. 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. In the circumferential direction X2, the first One blade group 32a and the second blade group 32b are arranged alternately. 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 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 perspective external view of a fan wheel of a fan according to another embodiment of the invention. FIG. 9 shows a combined cross-sectional view of a fan wheel of a fan according to another embodiment of the invention. Please refer to FIGS. 8 and 9. In one embodiment, the number of the blades 32 is 120, and the end portions 322 of the blades 32 each have the first end edge 322 a and the second end edge 322 b. 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; and the number of the second blade group 32b is 60. 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. In the circumferential direction X2, the first One blade group 32a and the second blade group 32b are arranged alternately. In one embodiment, the first edge 322a of the end 322 of the blades 32 is disposed away from the bottom surface 31c of the ring body 31, and the first end 322 of the blades 32 The two end edges 322b are disposed close to the direction of 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 disposed away from the blades 32 The section of the ring body 31 in the direction of the bottom surface 31c. In an embodiment, the mute ring 40 may be disposed in a section where the blades 32 approach the bottom surface 31c of the ring body 31, that is, the second end edge 322b of the first blade group 32a and the second The second end edge 322b of the blade set 32b may be connected to the same side of the mute ring 40. Therefore, the mute ring 40 can be disposed in a section other than the middle section of the blades 32. In this way, the number of the blades 32 can be relatively increased to improve the overall wind drive effect, and the silent 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 these blades.

In one embodiment, the mute ring 40 can be made of metal material to have better structural strength; or the mute 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 invention. With reference to FIG. 10, in an embodiment, the fan wheel 1 of the fan of the present invention may 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 side 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 The fan wheel 1 of the fan can also be used in other suitable applications.

In the above embodiment, the fan wheel 1 of the fan of the present invention utilizes the fan blade 30 made of a polymer, which has many advantages such as low manufacturing cost, easy molding and good structural strength. By controlling the fan blade 30 The thickness T of the blades 32 is less than 0.1 mm, and the number of the blades 32 is controlled to be greater than 70 pieces, 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 are only to illustrate the principle and efficacy of the present invention, but not to limit the present invention. Modifications and changes made by those skilled in the art to the above embodiments still do not violate the spirit of the present invention. The scope of rights of the present invention shall be as listed in the scope of patent application mentioned later.

1: fan wheel 10: hub 10a: inner side 10b: outer side 101: base 102: side 11: fixed 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 end edge 40: Silent ring D1: First maximum outer diameter D2: Second maximum outer diameter M: Motor M1: Permanent magnet T: Thickness X1: Axial X2: circumferential direction

FIG. 1 shows a top perspective view of the fan wheel of an embodiment of the invention;

2 is a bottom perspective view of a fan wheel of an embodiment of the present invention;

3 shows an exploded perspective view of a fan wheel of a fan according to an embodiment of the invention;

4 shows a sectional view of a combination of fan wheels of an embodiment of the present invention;

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

6 shows a bottom perspective view of the fan wheel of another embodiment of the present invention;

7 shows a sectional view of a combination of a fan wheel of a fan according to another embodiment of the invention;

8 is a bottom perspective perspective view of a fan wheel of a fan according to another embodiment of the invention;

9 shows a combined cross-sectional view of a fan wheel of a fan according to yet another embodiment of the present invention; and

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 invention.

1: fan wheel

10: Wheel

10a: inner side

101: base

102: side

11: fixed hole

12: Strengthening Department

121: Ring rib

122: ribs

20: shaft

30: fan blade

31: Torus

31a: outer wall

311: Groove

312: Balance weight

32: Blade

321: Root

322: end

40: Silent ring

X1: axial

X2: circumferential direction

T: thickness

Claims (30)

A fan wheel of a fan, comprising: a wheel hub with a fixing hole; a rotating shaft with an axial direction, the rotating shaft being arranged in the fixing hole of the wheel hub; a fan blade made of high molecular polymer A number of blades, the blades are arranged on the outer periphery of the hub in an annular arrangement, the blades each have a thickness, the thickness is less than 0.1 mm, and the number of the blades is greater than 70; and a silent ring , Combined with the blades of the fan blade. The fan wheel of the fan according to claim 1, wherein the thickness of the blades of the fan blade is greater than or equal to 0.02 mm. The fan wheel of the fan according to claim 2, 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. The fan wheel of the fan according to claim 1, wherein the number of the blades of the fan blade is less than or equal to 134. The fan wheel of the fan according to claim 1, wherein the fan blade has a ring body made of a polymer, and the blades are combined with the ring body. The fan wheel of the fan according to claim 5, wherein the ring body of the fan blade has a first maximum outer diameter in a circumferential direction around the axial direction, and the first maximum outer diameter is greater than 17 mm. The fan wheel of the fan according to claim 6, 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 to 40mm. The fan wheel of the fan according to claim 6, wherein the hub has an opposite inner side and an outer side, the ring body has an opposite outer wall and an inner wall, and the ring system is combined with the inner wall of the hub Outside. The fan wheel of the fan according to claim 8, wherein the blades of the fan blade each have a root and an end opposite to each other, and the blades are connected to the outer wall of the ring body with the root. The fan wheel of the fan according to claim 9, wherein the mute ring is coupled between the root and the end of the blades, and the mute ring is adjacent to the end. The fan wheel of the fan according to claim 10, wherein the ring body is provided with a bottom surface between the outer wall and the inner wall, and the end portions of the blades each have a first end edge and a second end edge opposite to each other, 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 disposed between the bottom surface of the ring body and the root of the first blade group, In the circumferential direction, the first blade group and the second blade group are arranged alternately. The fan wheel of the fan according to claim 11, 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. The fan wheel of the fan according to claim 11, wherein the first end edge of the first blade set and the first end edge of the second blade set are connected to the same side of the mute ring. The fan wheel of the fan according to claim 11, wherein the second end edge of the first blade set and the second end edge of the second blade set are connected to the same side of the mute ring. According to the fan wheel of claim 8, wherein the ring body is provided with a bottom surface between the outer wall and the inner wall, the bottom surface has a groove, and the groove is provided with a balance weight. The fan wheel of the fan according to claim 15, wherein the groove of the ring body is a ring-shaped groove, and the balance weight is at least one body. The fan wheel of the fan according to claim 1, wherein the hub has an opposite inner side and an outer side, and the fixing hole of the hub penetrates the inner side and the outer side. The fan wheel of the fan according to claim 17, wherein one end of the rotating shaft is laser welded to the fixing hole of the hub. The fan wheel of the fan according to claim 5, wherein the hub has a base portion and a side portion, the side portion is connected to the peripheral edge of the base portion, and the ring body is disposed on the side portion of the hub. The fan wheel of the fan according to claim 19, 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 reinforcements on the inner side. The fan wheel of the fan according to claim 20, wherein the reinforcing portion has a ring rib surrounding the periphery of the fixing hole. The fan wheel of the fan according to claim 20, wherein the reinforcing portion has a plurality of convex ribs extending from the periphery of the fixing hole toward the direction of the side portion, and radially surrounding the fixing hole Surrounding. The fan wheel of the fan according to claim 20, wherein the hub is made of metal material. The fan wheel of the fan according to claim 23, wherein the hub is formed by metal stamping from the outer side toward the inner side, and the raised portions are formed on the inner side of the hub. As in the fan wheel of claim 1, wherein the mute ring is made of metal material. The fan wheel of the fan according to claim 1, wherein the hub is made of a polymer. The fan wheel of the fan according to claim 1, wherein the silent ring is made of a polymer. The fan wheel of the fan of 26 or 27, wherein the polymer is a combination of liquid crystal polymer and carbon fiber. The fan wheel of the fan of 26 or 27, wherein the polymer is a combination of liquid crystal polymer and mineral fiber. The fan wheel of the fan of 26 or 27, wherein the polymer is a combination of liquid crystal polymer, glass fiber and mineral fiber.

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