Motor fan

Abstract

The utility model discloses a motor fan, which relates to the technical field of motors, and comprises a fan main body, a fan cover and a motor, the shaft sleeve penetrates through the through hole, a plurality of first fan blades and a plurality of second fan blades are arranged on the periphery of the shaft sleeve at intervals, the first fan blades and the second fan blades are perpendicular to the plane part in the center of the fan body, and the first fan blades and the second fan blades are correspondingly arranged in the same radial direction; the middle part of the fan main body in the motor fan is linear, and the outer edges of the blades adopt streamline design, so that the air resistance can be reduced, and the working efficiency of the fan can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and more specifically, relates to an electric motor fan. Background Art

[0002] Although the existing design of electric motor fan blades meets the market demand to a certain extent, there is still room for improvement in aspects such as wind force, noise, and efficiency. Therefore, it is of great practical significance to design a high-efficiency and low-noise direct electric motor fan blade to meet the market demand. Summary of the Utility Model

[0003] The purpose of the utility model is to address the deficiencies of the existing technology and provide an electric motor fan. The middle part of the fan body of this electric motor fan is set to be straight, while the outer edge of the blade adopts a streamline design, which can reduce air resistance and improve the working efficiency of the fan.

[0004] To achieve the above purpose, the utility model provides an electric motor fan, including:

[0005] A fan body, with a through hole provided in the middle;

[0006] A bushing, passing through the through hole. A plurality of first fan blades and a plurality of second fan blades are spaced apart on the outer periphery of the bushing. The first fan blades and the second fan blades are perpendicular to the plane part at the center of the fan body, and the first fan blades and the second fan blades are correspondingly arranged in the same radial direction.

[0007] Optionally, the fan body, the bushing, the first fan blades, and the second fan blades are of an integrally formed structure.

[0008] Optionally, two disassembly holes are correspondingly provided in the area of the fan body close to the bushing, and the disassembly holes are arranged between the first fan blades and the second fan blades.

[0009] Optionally, an installation hole is provided in the middle of the bushing, and a keyway is provided on the outer periphery of the installation hole.

[0010] Optionally, the first fan blades and the second fan blades are evenly arranged on the fan body.

[0011] Optionally, the structures of the ends of the first fan blades and the second fan blades far from the bushing are the same.

[0012] Optionally, the end of the first fan blade close to the bushing is rectangular.

[0013] Optionally, the end of the second fan blade close to the bushing is wedge-shaped.

[0014] Optionally, the portions of the first fan blade and the second fan blade near one end of the bushing penetrate through both sides of the fan body, and the portions of the first fan blade and the second fan blade located inside the fan body form reinforcing ribs.

[0015] Optionally, the fan body, the bushing, the first fan blade, and the second fan blade are made of cast aluminum alloy.

[0016] The present utility model provides a motor fan, and its beneficial effects are as follows:

[0017] 1. When the number of fan blades in the motor fan is even, an asymmetric structure of the first fan blade and the second fan blade can be adopted, which can effectively reduce noise and self-vibration while ensuring the largest number of fan blades.

[0018] 2. The fan body of the motor fan is centrally provided with a bushing, and the bushing is adaptively installed with the motor shaft through the mounting hole and the keyway, which can effectively protect the connection strength of the two.

[0019] 3. The motor fan is provided with two disassembly holes at a position near the through hole of the fan body, and the two disassembly holes are symmetrically arranged with the center of the bushing as the center, which can facilitate the installation and disassembly of the motor fan.

[0020] 4. The outer edges of the first fan blade and the second fan blade in the motor fan are both set to be streamlined, so that the fan blades can generate a larger air volume and a more uniform wind force distribution when rotating, thereby improving the working efficiency of the fan.

[0021] Other features and advantages of the present utility model will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.

[0023] Figure 1 FIG. 1 shows a front structural schematic diagram of a motor fan according to an embodiment of the present utility model.

[0024] Figure 2 FIG. 2 shows a rear structural schematic diagram of a motor fan according to an embodiment of the present utility model.

[0025] Figure 3 FIG. 3 shows a front view of a motor fan according to an embodiment of the present utility model.

[0026] Figure 4Shows a side sectional view of a motor fan according to an embodiment of the present utility model.

[0027] Figure 5 Shows a schematic structural view of a first fan blade according to an embodiment of the present utility model.

[0028] Figure 6 Shows a schematic structural view of a second fan blade according to an embodiment of the present utility model.

[0029] Explanation of reference numerals:

[0030] 1. Fan main body; 2. Bush; 3. First fan blade; 4. Second fan blade; 5. Disassembly hole; 6. Installation hole; 7. Keyway; 8. Reinforcing rib. Detailed implementation manner

[0031] The preferred embodiments of the present utility model will be described in more detail below. Although the preferred embodiments of the present utility model are described below, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to convey the scope of the present utility model fully to those skilled in the art.

[0032] The present utility model provides a motor fan, including:

[0033] A fan main body, with a through hole provided in the middle;

[0034] A bush, passing through the through hole, and a plurality of first fan blades and a plurality of second fan blades are arranged at intervals on the outer periphery of the bush. The first fan blades and the second fan blades are perpendicular to the plane part at the center of the fan main body, and the first fan blades and the second fan blades are correspondingly arranged in the same radial direction.

[0035] Specifically, the motor fan includes a fan main body, a bush and two types of fan blades. The bush passes through the through hole at the center of the fan main body, and the first fan blades and the second fan blades are circumferentially arranged with the center of the bush as the origin, and the first fan blades and the second fan blades are arranged at intervals. The inner ends of the first fan blades and the second fan blades are both connected to the bush. In this way, driven by the motor shaft, the fan main body and the fan blades can rotate synchronously, which can reduce the rotational resistance of the fan blades and reduce the noise generated when the motor fan rotates.

[0036] In addition, the middle part of the fan blade main body is set to be straight, and the outer edge of the fan blade main body is set to be arc-shaped, so that the middle part of the fan blade main body protrudes towards the bush direction, and the parts of the first fan blades and the second fan blades outside the fan blade main body are all designed with a streamline shape, which can reduce air resistance and improve the fan efficiency.

[0037] Optionally, the fan body, the bushing, the first fan blade and the second fan blade are of an integrally formed structure.

[0038] Specifically, during the casting process of the fan body, with the through hole as the reference, the bushing and the two types of fan blades are also cast simultaneously, so that all the structures of the motor fan form an integral structure, which can improve the overall strength of the motor fan.

[0039] Optionally, two disassembly holes are correspondingly arranged in the area of the fan body close to the bushing, and the disassembly holes are arranged between the first fan blade and the second fan blade.

[0040] Specifically, during the casting process of the motor fan, two disassembly holes are arranged in the area of the fan body close to the outer periphery of the bushing, and the disassembly holes do not damage the structures of the first fan blade or the second fan blade. The disassembly holes are arranged between the adjacent first fan blade and the second fan blade. In this way, only holes need to be opened on the fan body, which will not affect the overall strength of the motor fan, and the fan can be conveniently disassembled from the motor shaft through the two disassembly holes; in addition, the two disassembly holes are symmetrically arranged, so that when force is applied to the fan body through the disassembly holes, the motor fan will not be deformed.

[0041] Optionally, an installation hole is arranged in the center of the bushing, and a keyway is opened on the outer periphery of the installation hole.

[0042] Specifically, the installation hole and the keyway are machined in the center of the bushing, which is convenient for the corresponding installation of the bushing and the motor shaft, and ensures the accurate and proper installation position of the motor fan.

[0043] Optionally, the first fan blade and the second fan blade are evenly arranged on the fan body.

[0044] Optionally, the structures of the ends of the first fan blade and the second fan blade far from the bushing are the same.

[0045] Specifically, the first fan blade and the second fan blade are evenly arranged on the fan body, and the outer edge structures of the two types of fan blades are the same. In this way, the fan blade part of the motor fan located on the outer periphery of the fan body is the same, and when the motor fan rotates, it can continuously blow air outwards.

[0046] Optionally, one end of the first fan blade close to the bushing is rectangular.

[0047] Optionally, one end of the second fan blade close to the bushing is wedge-shaped.

[0048] Specifically, the symmetric first and second fan blades are arranged on the same straight line, and the shapes of the fan blades are symmetric. Vibration will be transmitted to each other, which will be inhibited and also superimposed, that is, resonance. The reason for resonance will cause the blades to be unable to withstand resonance for a long time and become fatigued, and ultimately may lead to the phenomenon of blade breakage. Symmetrically setting the outer distal ends of the first and second fan blades can ensure a consistent air output, and the proximal structures have different shapes, which can reduce resonance and prevent the fan blades from breaking.

[0049] Optionally, the parts of the first and second fan blades close to the bushing penetrate through both sides of the fan body, and the inner parts of the first and second fan blades located inside the fan body form reinforcing ribs.

[0050] Specifically, the two fan blades form reinforcing ribs on the concave side of the fan body, which can improve the strength and connection stability of the first and second fan blades.

[0051] Optionally, the materials of the fan body, bushing, first fan blade, and second fan blade are cast aluminum alloy.

[0052] Specifically, all components of the motor fan are made of lightweight materials, and cast aluminum alloy can be used, which can reduce the overall weight of the fan and the energy consumption during fan operation.

[0053] Embodiment

[0054] As Figures 1 to 6 shown, the present utility model provides a motor fan, including:

[0055] A fan body 1, with a through hole provided in the middle;

[0056] A bushing 2, passing through the through hole. Seven first fan blades 3 and seven second fan blades 4 are spaced apart on the outer periphery of the bushing 2. The first fan blades 3 and the second fan blades 4 are perpendicular to the planar part at the center of the fan body 1, and the first fan blades 3 and the second fan blades 4 are correspondingly arranged in the same radial direction.

[0057] In this embodiment, the fan body 1, bushing 2, first fan blade 3, and second fan blade 4 are of an integrally formed structure.

[0058] In this embodiment, two disassembly holes 5 are correspondingly provided in the area of the fan body 1 close to the bushing 2, and the disassembly holes 5 are provided between the first fan blades 3 and the second fan blades 4.

[0059] In this embodiment, an installation hole 6 is provided in the middle of the bushing 2, and a keyway 7 is provided on the outer periphery of the installation hole 6.

[0060] In this embodiment, the first fan blades 3 and the second fan blades 4 are evenly arranged on the fan body 1.

[0061] In this embodiment, the structures of the ends of the first fan blade 3 and the second fan blade 4 away from the shaft sleeve 2 are the same.

[0062] In this embodiment, the end of the first fan blade 3 close to the shaft sleeve 2 is rectangular.

[0063] In this embodiment, the end of the second fan blade 4 close to the shaft sleeve 2 is wedge-shaped.

[0064] In this embodiment, parts of the ends of the first fan blade 3 and the second fan blade 4 close to the shaft sleeve 2 penetrate through both sides of the fan main body 1, and the inner parts of the first fan blade 3 and the second fan blade 4 located in the fan main body 1 form a reinforcing rib 8.

[0065] In this embodiment, the materials of the fan main body 1, the shaft sleeve 2, the first fan blade 3 and the second fan blade 4 are cast aluminum alloy.

[0066] In summary, the shaft sleeve 2 is integrally cast in the central area of the fan main body 1 of the motor fan, and the first fan blade 3 and the second fan blade 4 are also integrally cast with the fan main body 1 on the outer periphery of the shaft sleeve 2. During the casting process, two disassembly holes 5 are reserved on the fan main body 1, which facilitates the disassembly of the motor fan. The first fan blade 3 and the second fan blade 4 vertically penetrate through the planar part in the center of the fan main body 1, and the outer edges of the first fan blade 3 and the second fan blade 4 extend beyond the outer periphery of the fan main body 1, and the outer edges of the two types of fan blades are streamlined. In this way, driven by the motor shaft, air supply can be realized through the outer edges of the fan blades.

[0067] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A motor fan, characterized in that, Comprising: A fan body, with a through hole centrally formed therein; A bushing, passing through the through hole, and a plurality of first fan blades and a plurality of second fan blades are spaced apart on the outer periphery of the bushing. The first fan blades and the second fan blades are perpendicular to the plane portion at the center of the fan body, and the first fan blades and the second fan blades are correspondingly arranged in the same radial direction.

2. The motor fan according to claim 1, characterized in that, The fan body, the bushing, the first fan blades and the second fan blades are of an integrally formed structure.

3. The motor fan according to claim 1, characterized in that, Two disassembly holes are correspondingly arranged in the area of the fan body close to the bushing, and the disassembly holes are arranged between the first fan blades and the second fan blades.

4. The motor fan according to claim 1, characterized in that, The bushing is centrally provided with a mounting hole, and a keyway is formed on the outer periphery of the mounting hole.

5. The motor fan according to claim 1, characterized in that, The first fan blades and the second fan blades are evenly arranged on the fan body.

6. The motor fan according to claim 1, wherein, The structures of the ends of the first fan blades and the second fan blades away from the bushing are the same.

7. The motor fan according to claim 6, wherein One end of the first fan blade close to the bushing is rectangular.

8. The motor fan according to claim 6, wherein One end of the second fan blade close to the bushing is wedge-shaped.

9. The motor fan according to claim 1, characterized in that Parts of the first fan blades and the second fan blades close to one end of the bushing penetrate through both sides of the fan body, and the inner parts of the first fan blades and the second fan blades located on the fan body form reinforcing ribs.

10. The motor fan according to claim 1, characterized in that, The materials of the fan body, the bushing, the first fan blades and the second fan blades are cast aluminum alloy.

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