Efficient heat dissipation motor fan blade and motor adopting same

Abstract

The utility model discloses a high-efficiency heat dissipation motor fan blade and a motor adopting the fan blade. The efficient heat dissipation motor fan blade comprises a hub, a shaft sleeve for a motor rotating shaft to penetrate through is arranged in the middle of the hub. The hub is in a cover shape, and the surface of the hub is gradually shrunk from the edge to the center. A group of blades are uniformly arranged on the convex surface of the hub and on the outer side of the shaft sleeve at intervals along the circumferential direction; the blades extend outwards all the time from the edge of the shaft sleeve, and the outer ends of the blades exceed the outer edge of the hub. The blades are integrally twisted, and the twisting angles of the blades are continuously changed from the direction close to the shaft sleeve to the direction far away from the shaft sleeve, so that the cross sections of the blades are S-shaped. According to the fan blade disclosed by the utility model, the blades are designed into the twisted shape, and the twisted angles of the blades are optimized, so that air flow can uniformly and stably flow on the surfaces of the blades, and the heat dissipation efficiency is improved, therefore, a motor can be ensured to keep a lower temperature in a long-time operation process, and the performance and the service life of the motor are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a high-efficiency heat dissipation motor fan blade and a motor using the fan blade. Background Technology

[0002] An electric motor is an electromagnetic device that converts electrical energy into mechanical energy, and it is widely used in industry, transportation, and home appliances. During operation, an electric motor generates a significant amount of heat. If this heat is not dissipated effectively and promptly, the motor temperature will become too high, affecting its performance, lifespan, and potentially causing malfunctions. Therefore, during motor manufacturing, manufacturers typically install fan blades at the rear end (non-shaft extension end). These blades rotate synchronously with the motor shaft, accelerating airflow within the motor and achieving heat dissipation. However, currently available motor fan blades still have certain shortcomings in terms of heat dissipation efficiency, blade stability, and energy saving. For example, the blade shape and angle design of traditional fan blades are not ideal, resulting in uneven airflow distribution and poor heat dissipation. Secondly, due to their structure, high-speed rotation can easily generate vibration and noise, affecting not only the motor's operational stability but also interfering with the surrounding environment. Furthermore, traditional fan blades consume a significant amount of electrical energy during operation, which is not conducive to energy conservation and emission reduction. Utility Model Content

[0003] This invention provides a high-efficiency heat dissipation motor fan blade to overcome the aforementioned problems in the prior art. The high-efficiency heat dissipation motor fan blade of this invention designs the blades in a twisted shape and optimizes the twist angle of the blades, thereby enabling the airflow to form a uniform and stable flow on the blade surface, improving heat dissipation efficiency. This ensures that the motor maintains a low temperature during long-term operation, improving the motor's performance and lifespan.

[0004] Regarding the wind turbine blades, the technical solution of this application is as follows:

[0005] A high-efficiency heat dissipation motor fan blade includes a hub; a bushing through which the motor shaft passes in the center of the hub; the surface of the hub gradually tapers from the edge to the center, making the hub cover-shaped; on the convex surface of the hub, a set of blades are evenly spaced circumferentially outside the bushing; the blades extend outward from the edge of the bushing, and the ends of the blades extend beyond the outer edge of the hub; the blades are twisted as a whole, and the twist angle of the blades changes continuously from the direction close to the bushing to the direction far away from the bushing, making the cross-section of the blades S-shaped.

[0006] Compared with the prior art, the high-efficiency heat dissipation motor fan blade of this utility model includes a hub and blades disposed on the hub; wherein, the blades are twisted as a whole, and the twist angle gradually changes from the direction close to the bushing to the direction far away from the bushing, so that the cross-section of the blades is S-shaped. This gradual twist design allows the airflow to form a uniform and stable flow on the blade surface, thereby better guiding the airflow, reducing airflow turbulence and energy loss, and thus improving heat dissipation efficiency. As a result, it can ensure that the motor maintains a low temperature during long-term operation, improving the performance and life of the motor.

[0007] As an optimization, in the aforementioned high-efficiency heat dissipation motor fan blade, the twist angle of the blade can be in the range of 15° to 45°. When the blade twist angle is too large, it may cause material fatigue due to excessive twisting, affecting the reliability of the blade; when the blade twist angle is too small, it may increase torque fluctuation, thereby affecting the smoothness of the blade's operation. Continuous experiments have shown that a blade twist angle of 15° to 45° is optimal.

[0008] As an optimization, in the aforementioned high-efficiency heat dissipation motor fan blade, the blade is streamlined, with the end of the blade closer to the bushing being thinner and the end farther from the bushing being thicker. This streamlined design reduces air resistance during rotation, allowing the fan blade to consume less energy and achieving energy savings, aligning with current energy-saving and environmentally friendly development trends. Furthermore, it allows for smoother airflow across the blade surface, further enhancing heat dissipation.

[0009] As an optimization, in the aforementioned high-efficiency heat dissipation motor fan blade, the surface of the blade is provided with multiple guide grooves distributed along the blade length direction. The function of the guide grooves is to further guide the airflow, so that the airflow forms a more orderly flow on the blade surface, avoiding airflow separation and vortex generation, thereby improving heat dissipation efficiency.

[0010] As an optimization, in the aforementioned high-efficiency heat dissipation motor fan blade, a set of radially distributed reinforcing ribs are provided on the concave surface of the hub, extending from the outer peripheral wall of the bushing towards the outer edge of the hub. The design of the reinforcing ribs effectively enhances the strength and rigidity of the hub, making the fan blade more stable during high-speed rotation and reducing vibration and noise generation. Therefore, applying the fan blade of this application to a motor can not only improve the motor's operational stability but also reduce noise pollution in the surrounding environment.

[0011] As an optimization, the aforementioned high-efficiency heat dissipation motor fan blades have two symmetrical heat dissipation holes on the hub about the bushing. The design of these heat dissipation holes improves ventilation, allowing some of the heat inside the motor to be carried away, thus reducing the motor's temperature rise.

[0012] As an optimization, in the aforementioned high-efficiency heat dissipation motor fan blades, both the hub and blades are made of aluminum alloy. Aluminum alloy has good strength and rigidity, which can meet the mechanical requirements of the fan blades when rotating at high speeds. At the same time, its low density helps to reduce the overall weight of the fan blades, thereby reducing the load on the motor.

[0013] Furthermore, the blades and hub are connected and fixed by high-strength bolts or rivets, and sealant is applied to the connection point. This results in a simple connection structure, convenient assembly, and a high degree of stability between the blades and hub. In addition, applying sealant to the connection point prevents dust and moisture from entering, ensuring the reliability of the fan blades.

[0014] For the electric motor, the technical solution of this application is as follows:

[0015] An electric motor includes a housing, a stator and a rotor disposed within the housing, the rotor including a rotor core and a rotating shaft disposed in the middle of the rotor core; a cooling fan is provided at the rear end of the rotating shaft; the cooling fan adopts the aforementioned high-efficiency cooling motor fan; the rotating shaft is inserted into a bushing and connected to the bushing by a key.

[0016] Compared with the prior art, the heat dissipation fan blades of the motor of this utility model have a specific structure. The blades are S-shaped twisted, which allows the airflow to form a uniform and stable flow on the blade surface, improving the heat dissipation efficiency. This enables the motor to maintain a low temperature during long-term operation, thereby improving the motor's performance and lifespan. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the high-efficiency heat dissipation motor fan blade in the embodiment of this application;

[0018] Figure 2 yes Figure 1 Sectional view along line AA in the middle;

[0019] Figure 3 This is a schematic diagram of the concave structure of the high-efficiency heat dissipation motor fan blade in the embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the motor structure in the application example of this application.

[0021] The markings in the attached diagram are: 1-hub, 11-shoulder sleeve, 101-shaft hole, 102-heat dissipation hole; 2-blade; 3-reinforcing rib; 4-shell; 5-stator; 6-rotor; 61-shaft. Detailed Implementation

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present application.

[0023] To overcome the problems of uneven airflow distribution, poor heat dissipation, vibration and noise during high-speed rotation, and high energy consumption in traditional motor fan blades, this application provides a high-efficiency heat dissipation motor fan blade. By optimizing the twist angle of the fan blades and setting guide grooves on the blades, airflow is better guided, reducing airflow turbulence and energy loss, improving heat dissipation efficiency, and achieving energy saving. At the same time, radially distributed reinforcing ribs are set on the hub to enhance the running stability of the fan blade and reduce operating noise. The specific structure is as follows.

[0024] See Figure 1 and Figure 2 The high-efficiency heat dissipation motor fan blade of this application includes a hub 1; a bushing 11 through which the motor shaft 61 passes is provided in the middle of the hub 1; the surface of the hub 1 gradually tapers from the edge to the center, making the hub 1 cover-shaped; on the convex surface of the hub 1, a set of blades 2 are evenly spaced along the circumference outside the bushing 11; the blades 2 extend outward from the edge of the bushing 11, and the outer end of the blades 2 extends beyond the outer edge of the hub 1; the blades 2 are twisted in general, and the twist angle of the blades 2 changes continuously from the direction close to the bushing 11 to the direction far away from the bushing 11, making the cross-section of the blades 2 S-shaped; the twist angle of the blades 2 ranges from 15° to 45°.

[0025] Example:

[0026] In this embodiment, five blades 2 are evenly spaced on the convex surface of the hub 1.

[0027] In this embodiment, the blade 2 is streamlined, with a thinner end near the bushing 11 and a thicker end away from the bushing 11. The streamlined design of the blade 2 reduces air resistance during rotation, allowing it to consume less energy and achieving energy savings, aligning with current energy conservation and environmental protection trends. Furthermore, it allows for smoother airflow across the blade 2 surface, further enhancing heat dissipation.

[0028] In this embodiment, the surface of the blade 2 (the leeward side in this embodiment, not shown in the figure) is provided with multiple guide grooves distributed along the length of the blade 2 (from near the bushing 11 to away from the bushing 11). The function of the guide grooves is to further guide the airflow, so that the airflow forms a more orderly flow on the surface of the blade 2, avoiding airflow separation and vortex generation, thereby improving heat dissipation efficiency. In order to adapt to different airflow speeds and pressures, the depth and width of the guide grooves are designed according to actual needs.

[0029] See Figure 3In this embodiment, five radially distributed reinforcing ribs 3 are provided on the concave surface of the hub 1, extending from the outer peripheral wall of the bushing 11 towards the outer edge of the hub 1. The design of the reinforcing ribs 3 effectively enhances the strength and rigidity of the hub 1, making the fan blade more stable when rotating at high speed and reducing vibration and noise generation. Therefore, when the fan blade of this embodiment is applied to a motor, it can not only improve the operating stability of the motor, but also reduce noise pollution in the surrounding environment.

[0030] In this embodiment, the hub 1 is provided with two heat dissipation holes 101 symmetrical about the bushing 11. The design of the heat dissipation holes 101 can improve the ventilation effect, allowing some of the heat inside the motor to be carried away through the heat dissipation holes 101, thereby reducing the temperature rise of the motor.

[0031] In this embodiment, both the hub 1 and the blades 2 are made of aluminum alloy. Aluminum alloy possesses good strength and rigidity, meeting the mechanical requirements of the fan blades during high-speed rotation. Simultaneously, its low density helps reduce the overall weight of the fan blades, thereby reducing the load on the motor. Furthermore, the blades 2 are fixed to the hub 1 with high-strength bolts, and sealant is applied to the connection point. This results in a simple connection structure, convenient assembly, and a high degree of connection strength between the blades 2 and the hub 1. In addition, applying sealant to the connection point prevents dust and moisture from entering, ensuring the reliability of the fan blades.

[0032] The manufacturing process of the fan blades in this embodiment is as follows:

[0033] - Manufacturing of hub 1: First, aluminum alloy material is used to make a blank of hub 1 through casting process; then, the blank is machined, including turning, milling and other processes, to accurately machine the central shaft hole, mounting hole and reinforcing rib 3 of hub 1, so as to ensure the dimensional accuracy and surface quality of hub 1.

[0034] - Manufacturing of blade 2: Blade 2 is manufactured using injection molding. The aluminum alloy material is heated to a molten state and injected into a pre-designed mold, where it is shaped into the form of blade 2. The injection molding process can precisely control the shape and size of blade 2, ensuring the torsion angle of blade 2 and the accuracy of the flow guide groove 201 structure on the surface of blade 2.

[0035] - Assembly: High-strength bolts are used to assemble and connect the manufactured hub 1 and blade 2 to ensure that the connection between blade 2 and hub 1 is firm and reliable. Sealant is applied to the connection to prevent dust and moisture from entering and affecting the performance of the wind turbine.

[0036] - Installation and Debugging: Install the assembled fan blades onto the motor shaft, ensuring that the center of the fan blades is concentric with the center of the motor shaft. After installation, perform debugging to check whether the fan blades rotate smoothly and whether there is any abnormal vibration or noise. If any problems are found, make timely adjustments and optimizations to ensure that the fan blades can work normally and efficiently.

[0037] As a specific application of the high-efficiency heat dissipation motor fan blade in this embodiment:

[0038] See Figure 4 The motor in this application example includes a housing 4, a stator 5 and a rotor 6 disposed within the housing 4. The rotor 6 includes a rotor core and a rotating shaft 61 disposed in the middle of the rotor core. A heat dissipation fan is provided at the rear end of the rotating shaft 61. The heat dissipation fan adopts the aforementioned high-efficiency heat dissipation motor fan. The rotating shaft 61 is inserted into the bushing 11 and is connected to the bushing 11 by a key.

[0039] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A high-efficiency heat dissipation motor fan blade, comprising a hub (1); a bushing (11) is provided in the middle of the hub (1); a shaft hole (101) for the motor shaft (61) to pass through is provided in the middle of the bushing (11); characterized in that: The surface of the hub (1) gradually tapers from the edge to the center, making the hub (1) cover-shaped; on the convex surface of the hub (1), a set of blades (2) are evenly spaced along the circumference outside the bushing (11); the blades (2) extend outward from the edge of the bushing (11), and the end of the blades (2) extends beyond the outer edge of the hub (1); the blades (2) are twisted as a whole, and the twist angle of the blades (2) changes continuously from the direction close to the bushing (11) to the direction far away from the bushing (11), making the cross-section of the blades (2) S-shaped.

2. The high-efficiency heat dissipation motor fan blade according to claim 1, characterized in that: The twist angle of the blade (2) ranges from 15° to 45°.

3. The high-efficiency heat dissipation motor fan blade according to claim 1, characterized in that: The blade (2) is streamlined, and the end of the blade (2) closer to the bushing (11) is thinner, while the end farther from the bushing (11) is thicker.

4. The high-efficiency heat dissipation motor fan blade according to claim 1, characterized in that: The concave surface of the hub (1) is provided with a set of radially distributed reinforcing ribs (3), which extend from the outer peripheral wall of the bushing (11) to the outer edge of the hub (1).

5. The high-efficiency heat dissipation motor fan blade according to claim 1, characterized in that: The hub (1) is provided with two heat dissipation holes (102) symmetrical about the bushing (11).

6. The high-efficiency heat dissipation motor fan blade according to claim 1, characterized in that: The surface of the blade (2) is provided with a plurality of guide grooves distributed along the length direction of the blade (2).

7. The high-efficiency heat dissipation motor fan blade according to claim 1, characterized in that: Both the hub (1) and the blade (2) are made of aluminum alloy.

8. The high-efficiency heat dissipation motor fan blade according to claim 7, characterized in that: The blade (2) is fixed to the hub (1) by high-strength bolts or rivets, and the connection is coated with sealant.

9. An electric motor, comprising a housing (4), and a stator (5) and a rotor (6) disposed within the housing (4), the rotor (6) comprising a rotor core and a shaft (61) disposed in the middle of the rotor core; the rear end of the shaft (61) is provided with a cooling fan; characterized in that: The heat dissipation fan blade is the high-efficiency heat dissipation motor fan blade as described in claim 1; the rotating shaft (61) is inserted into the bushing (11).

10. The motor according to claim 9, characterized in that: The rotating shaft (61) and the bushing (11) are connected by a key.

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