Inner fan blade and motor

Abstract

The utility model discloses a kind of inner fan blade and motor, inner fan blade includes frame assembly, fan mechanism and fixed mechanism, frame assembly is circular ring structure;Fan mechanism includes multiple blades, multiple blades are connected to frame assembly along the circumferential interval of frame assembly, and the inside and outside two ends of multiple blades are connected to frame assembly;Fixed mechanism includes multiple pins, multiple pins are connected to the outer periphery of the underside of frame assembly along the circumferential interval of frame assembly, and multiple pins extend along the axial direction of frame assembly.The motor applied above-mentioned one kind of inner fan blade, can effectively improve structural stability, effectively reduce the noise generated in the operation process.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to an inner fan blade and a motor. Background Technology

[0002] When an electric motor is running, the internal copper wires and iron core generate a large amount of heat due to the work done by internal resistance. If this heat cannot be dissipated in time, it can easily lead to aging or even burnout of the motor's insulation layer. To alleviate this problem, internal fan blades are added to motors to enhance heat dissipation. As part of the motor's cooling system, the internal fan blades are generally connected to the rotor. When the rotor rotates, it drives the internal fan blades to rotate as well. The rotation of the internal fan blades effectively drives internal air circulation, forcing the cooling airflow through the ventilation channels of the motor rotor and stator and the winding gaps. This provides the cooling airflow with direct and efficient heat exchange with the heat source, thereby significantly reducing the internal temperature of the motor and ensuring its safe, reliable, and long-term operation under high-power conditions. Although the internal fan blades installed on existing motors can achieve good heat dissipation, they are noisy during operation, and their structural stability may decrease after long-term use. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an internal fan blade and a motor, wherein the motor utilizes an internal fan blade provided in this application. The internal fan blade can effectively improve structural stability and effectively reduce noise generated during operation.

[0004] In a first aspect, an inner fan blade according to an embodiment of the present utility model includes: The frame components are in the form of a circular ring structure; A fan mechanism includes multiple blades, which are circumferentially connected to the frame assembly, and both the inner and outer ends of the multiple blades are connected to the frame assembly. The fixing mechanism includes multiple pins that are circumferentially connected to the outer periphery of the lower side of the frame assembly and extend axially along the frame assembly.

[0005] An inner fan blade according to an embodiment of the present utility model has at least the following beneficial effects: Multiple blades are connected to a circular frame assembly at both ends along their respective lengths. The frame assembly securely connects the inner and outer ends of the blades, effectively improving structural stability and maintaining good structural stability even after prolonged use. The fixed connection of both the inner and outer ends of each blade to the frame assembly significantly limits the blade's oscillation amplitude and reduces resonance between the blades and the motor, thereby effectively reducing noise generated by the inner fan blades during operation. Compared to existing technologies where the blades' edges are exposed to the air along their length, this invention connects the inner and outer ends of each blade to the frame assembly, reducing air friction vibration generated at the blade's inner and outer ends during rapid rotation, reducing air turbulence, and producing a smoother, more efficient airflow to reduce noise. When the rotor rotates, it drives the frame assembly and the fan mechanism to rotate through multiple pins. These pins are connected to the outer periphery of the frame assembly at intervals along its circumference. The pins can generate a large torque on the frame assembly and the fan mechanism, allowing the rotor to drive the inner fan blades to rotate more quickly when the motor starts. At the same time, because the pins located on the outer periphery of the frame assembly can generate a large torque on the frame assembly and the fan mechanism, when the pins are inserted into the connection holes of the rotor connected to the motor, they can better cope with the oscillation of the inner fan blades caused by the slight eccentricity between the inner fan blades and the motor, as well as the resonance between the inner fan blades and the motor.

[0006] According to an embodiment of the present invention, an inner fan blade has a frame assembly comprising a first ring body and a second ring body, the first ring body and the second ring body being coaxially arranged, the outer diameter of the second ring body being less than or equal to the outer diameter of the first ring body, and the inner and outer ends of a plurality of blades being connected to the first ring body and the second ring body respectively.

[0007] The advantage is that when one or more blades vibrate, the vibration can be transmitted to the first and second rings, and then to other blades that are not vibrating, quickly consuming this vibration energy. This can effectively reduce the vibration amplitude and duration of the blades, improve structural strength, reduce air turbulence, and further reduce noise.

[0008] According to an embodiment of the present invention, an inner fan blade, the frame assembly further includes a third ring body, the third ring body is coaxially arranged with a second ring body, the outer diameter of the second ring body is smaller than the outer diameter of the third ring body, and the third ring body is connected to multiple blades.

[0009] The advantage is that the third ring restricts the middle position of each blade, which can further improve the structural strength of the inner blade and further reduce the amplitude of vibration generated by the inner blade during operation.

[0010] According to an embodiment of the present invention, an inner fan blade has a third ring body spaced apart from the first ring body on the side away from the insertion pin.

[0011] The benefits include: better withstanding axial impact forces from the frame components, further improving the structural reliability of the inner blades.

[0012] According to an embodiment of the present invention, an inner fan blade is provided with a second ring body spaced apart on the radial inner side of a third ring body.

[0013] The benefits are: further improving the structural strength and reliability of the inner blades.

[0014] According to an embodiment of the present invention, an inner fan blade has multiple blades connected to the upper side of a first ring body, the lower side of a second ring body, and the lower side of a third ring body.

[0015] The advantage is that, in the vertical direction, multiple blades are confined between the first ring, the second ring, and the third ring, which further enhances the structural strength and reliability of the inner blades.

[0016] According to an embodiment of the present invention, an inner fan blade is provided with a first reinforcing rib at the connection between multiple blades and a first ring body.

[0017] The advantage is that the first reinforcing rib enhances the reliability of the connection between the blade and the first ring body.

[0018] According to an embodiment of the present invention, an inner fan blade has a guide portion provided at the end of the pin away from the frame assembly.

[0019] The advantage is that the guide section facilitates the insertion of the pins into the connection holes connected to the rotor, thus guiding the pins and improving assembly efficiency.

[0020] According to an embodiment of the present invention, an inner fan blade has an avoidance hole provided at the axial center of the frame assembly.

[0021] The advantage is that the clearance hole allows the motor shaft to pass through, avoiding mutual interference.

[0022] Secondly, according to an embodiment of the present invention, a motor utilizes the aforementioned inner fan blade.

[0023] Multiple blades are connected to a circular frame assembly at both ends along their respective lengths. The frame assembly securely connects the inner and outer ends of the blades, effectively improving structural stability and maintaining good structural stability even after prolonged use. The fixed connection of both the inner and outer ends of each blade to the frame assembly significantly limits the blade's oscillation amplitude and reduces resonance between the blades and the motor, thereby effectively reducing noise generated by the inner fan blades during operation. Compared to existing technologies where the blades' edges are exposed to the air along their length, this invention connects the inner and outer ends of each blade to the frame assembly, reducing air friction vibration generated at the blade's inner and outer ends during rapid rotation, reducing air turbulence, and producing a smoother, more efficient airflow to reduce noise. When the rotor rotates, it drives the frame assembly and fan mechanism to rotate via multiple pins. These pins are spaced circumferentially around the outer perimeter of the frame assembly's lower side. The pins generate a significant torque on the frame assembly and fan mechanism, allowing the rotor to drive the inner fan blades to rotate more quickly when the motor starts. Simultaneously, because the pins located on the outer perimeter of the lower side of the frame assembly generate a significant torque on the frame assembly and fan mechanism, when the pins are inserted into the connection holes connected to the motor rotor, they better handle the slight eccentricity between the inner fan blades and the motor, which causes oscillation of the inner fan blades and resonance between them. This reduces noise generated during motor operation, increases structural strength, and extends the motor's service life.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of an inner fan blade according to an embodiment of the present utility model; Figure 2 This is another perspective view of an inner fan blade according to an embodiment of the present utility model; Figure 3 This is a top view of an inner fan blade according to an embodiment of the present utility model; Figure 4 This is a perspective view of an inner fan blade and rotor according to an embodiment of the present utility model.

[0026] Explanation of reference numerals in the attached figures: Frame component 100; First ring body 110; Third ring body 120; Second ring body 130; Fan mechanism 200; blades 210; positioning hole 220; first reinforcing rib 230; second reinforcing rib 240; third reinforcing rib 250; Fixing mechanism 300; pin 310; guide part 320; fourth reinforcing rib 330; 400mm clearance hole; Rotor 500; connecting hole 510. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of a utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figures 1 to 4This utility model embodiment provides an inner fan blade, including a frame assembly 100, a fan mechanism 200, and a fixing mechanism 300. The frame assembly 100 has a circular structure. The fan mechanism 200 includes multiple blades 210, which are spaced apart and connected to the frame assembly 100 circumferentially. Both the inner and outer ends of the multiple blades 210 are connected to the frame assembly 100. Specifically, the frame assembly 100 is used to fix the multiple blades 210, and each blade 210 has its length direction arranged along the radial direction of the frame assembly 100, forming a radial structure. Specifically, the inner end of the blade 210 refers to the blade 210 near the frame assembly 100. One end of the axial axis, the outer end of the blade 210 refers to the end of the blade 210 away from the axial axis of the frame assembly 100; specifically, the inner and outer ends of the blade 210 are the two ends of the blade 210 along its length direction, and the two ends of the multiple blades 210 along their respective length directions are all connected to the frame assembly 100; the fixing mechanism 300 includes multiple pins 310, the multiple pins 310 are connected to the outer periphery of the lower side of the frame assembly 100 at intervals along the circumference of the frame assembly 100, the multiple pins 310 extend along the axial direction of the frame assembly 100, and the multiple pins 310 are used to cooperate and be inserted into the connection hole 510 connected to the rotor 500 of the motor; specifically, at least three pins 310 are evenly spaced.

[0032] A ring-shaped frame assembly 100 connects multiple blades 210. Both ends of each blade 210 are connected to the frame assembly 100 along its length. The frame assembly 100 provides a fixed connection between the inner and outer ends of the blades 210, effectively improving structural stability and maintaining good structural stability even after prolonged use. The fixed connection of both the inner and outer ends of each blade 210 to the frame assembly 100 significantly limits the swing amplitude of the blades 210 and reduces resonance between the blades 210 and the motor, thereby effectively reducing noise generated by the inner fan blades during operation. Compared to existing technologies where the edges of the blades 210 are exposed to the air along their length, in this invention, the inner and outer ends of each blade 210 are connected to the frame assembly 100, thereby reducing air friction vibration generated at the inner and outer ends of the blades 210 during rapid rotation, reducing air turbulence, and generating a smoother, more efficient airflow to reduce noise. When the rotor 500 rotates, it drives the frame assembly 100 and the fan mechanism 200 to rotate through multiple pins 310. The multiple pins 310 are connected to the outer periphery of the lower side of the frame assembly 100 at intervals along the circumference of the frame assembly 100. The pins 310 can generate a large torque on the frame assembly 100 and the fan mechanism 200, so that when the motor starts, the rotor 500 can drive the inner fan blade to rotate more quickly through the pins 310. At the same time, since the pins 310 located on the outer periphery of the lower side of the frame assembly 100 can generate a large torque on the frame assembly 100 and the fan mechanism 200, when the pins 310 are inserted into the connection hole 510 of the rotor 500 connected to the motor, they can better cope with the oscillation of the inner fan blade caused by the slight eccentricity between the inner fan blade and the motor and the resonance generated between the inner fan blade and the motor.

[0033] As a preferred option, the blade 210 has an arc-shaped spiral structure. The arc-shaped spiral structure of the blade 210 can better push air towards the rotor 500 of the motor and other components to improve the heat dissipation effect.

[0034] According to some embodiments of this application, refer to Figures 1 to 4 The frame assembly 100 includes a first ring body 110 and a second ring body 130, which are coaxially arranged. The outer diameter of the second ring body 130 is less than or equal to the outer diameter of the first ring body 110. The inner and outer ends of multiple blades 210 are respectively connected to the first ring body 110 and the second ring body 130. The first ring body 110 and the second ring body 130 are respectively connected to the inner and outer ends of the multiple blades 210. When one or more blades 210 vibrate, their vibration can be transmitted to the first ring body 110 and the second ring body 130, and then transmitted to other blades 210 that are not vibrating, quickly dissipating this vibration energy. This effectively reduces the vibration amplitude and vibration time of the blades 210, improves structural strength, reduces air turbulence, and further reduces noise.

[0035] Furthermore, referring to Figure 1 and Figure 3 The frame assembly 100 also includes a third ring body 120, which is coaxially arranged with the second ring body 130. The outer diameter of the second ring body 130 is smaller than that of the third ring body 120. The third ring body 120 is connected to multiple blades 210. Specifically, the third ring body 120 is disposed between the first ring body 110 and the second ring body 130, and the first ring body 110, the second ring body 130, and the third ring body 120 are coaxially arranged. When one or more blades 210 vibrate, their vibration can be transmitted to the first ring body 110, the second ring body 130, and the third ring body 120, and then transmitted to other blades 210 that are not vibrating. The third ring body 120 can also more quickly transmit the vibration generated in the middle of the blade 210, rapidly dissipating this vibration energy, thereby effectively reducing the vibration amplitude and vibration time of the blade 210. The third ring 120 restricts the middle position of each blade 210. The third ring 120 can further improve the structural strength of the inner blade and further reduce the amplitude of vibration generated when the inner blade is working.

[0036] Furthermore, referring to Figure 1 and Figure 2 The third ring 120 is spaced apart from the first ring 110 on the side away from the pin 310. The third ring 120 is spaced apart above the first ring 110, which can better withstand the axial impact force from the frame assembly 100 and further improve the structural reliability of the inner fan blade.

[0037] Furthermore, referring to Figure 3 The second ring body 130 is arranged radially inside the third ring body 120. The third ring body 120 is located between the first ring body 110 and the second ring body 130. The second ring body 130 is closer to the axis of the frame assembly 100 than the third ring body 120. When the first ring body 110, the second ring body 130, and the third ring body 120 are all connected to multiple blades 210, the first ring body 110, the second ring body 130, and the third ring body 120, together with the multiple blades 210, form a three-dimensional structure, which is a basket-shaped structure. This further improves the structural strength and reliability of the inner blades.

[0038] Furthermore, referring to Figure 1 and Figure 2Multiple blades 210 are connected to the upper side of the first ring body 110, the lower side of the second ring body 130, and the lower side of the third ring body 120. Specifically, the upper side of each blade 210 is connected to the lower side of the second ring body 130 and the third ring body 120, and the lower side of each blade 210 is connected to the upper side of the first ring body 110. In the vertical direction, the multiple blades 210 are confined between the first ring body 110, the second ring body 130, and the third ring body 120, further improving the structural strength and reliability of the inner blades.

[0039] It is understood that, in some other embodiments, reference is made to... Figure 1 Multiple blades 210 extend upward between the second ring body 130 and the third ring body 120. That is, multiple blades 210 are also connected to the side of the second ring body 130 near the third ring body 120, and multiple blades 210 are also connected to the side of the third ring body 120 near the second ring body 130, which further improves the structural reliability, enhances the blowing capacity, and reduces air turbulence.

[0040] According to some embodiments of this application, refer to Figure 1 A first reinforcing rib 230 is provided at the connection between multiple blades 210 and the first ring body 110. Specifically, the blades 210 are provided with first reinforcing ribs 230 on both sides of the first ring body 110 in the circumferential direction. The first reinforcing ribs 230 are used to enhance the reliability of the connection between the blades 210 and the first ring body 110.

[0041] It is understood that, in some other embodiments, reference is made to... Figure 1 Each blade 210 is further provided with a second reinforcing rib 240 at the connection between it and the first ring body 110. Specifically, each blade 210 is provided with a second reinforcing rib 240, which is located below each blade 210. This further enhances the reliability of the connection between each blade 210 and the first ring body 110.

[0042] It is understood that, in some other embodiments, reference is made to... Figure 1 Each blade 210 is further provided with a third reinforcing rib 250 at the connection between it and the third ring body 120. Specifically, the third reinforcing rib 250 is disposed above each blade 210, and is located on the side of the third ring body 120 away from the second ring body 130, in order to further enhance the connection reliability between the blade 210 and the third ring body 120.

[0043] According to some embodiments of this application, refer to Figure 2A guide portion 320 is provided at the end of the pin 310 away from the frame assembly 100. Specifically, the outer diameter of the end of the pin 310 away from the frame assembly 100 gradually decreases in the direction away from the frame assembly 100, forming the guide portion 320. The guide portion 320 includes multiple inclined surfaces that are inclined toward the axis of the pin 310. The guide portion 320 facilitates the insertion of the pin 310 into the connection hole 510 connected to the rotor 500, thus guiding the pin 310 and improving assembly efficiency.

[0044] According to some embodiments of this application, refer to Figures 1 to 4 A clearance hole 400 is provided at the axial center of the frame assembly 100. Specifically, the second ring body 130 surrounds and forms the clearance hole 400, which is coaxially arranged with the first ring body 110, the third ring body 120, and the second ring body 130. (Refer to...) Figure 4 The clearance hole 400 is used to allow the motor shaft to pass through, avoiding mutual interference.

[0045] It is understood that, in some other embodiments, reference is made to... Figure 1 One or more blades 210 have positioning holes 220 on their upper sides. The positioning holes 220 are located on the side of one or more blades 210 away from the first ring body 110, and the opening direction of the positioning holes 220 is along the axis of the frame assembly 100 and away from the first ring body 110. The positioning holes 220 are used to cooperate with positioning pins, grippers, etc. during the production process to improve the convenience of positioning and installing the inner fan blades on the rotor 500.

[0046] This application also provides an internal fan blade motor that uses the present application, which further includes a rotor 500, a stator (not shown) and a bracket (not shown). The rotor 500 is provided with a connection hole 510, and the pin 310 can be inserted into the connection hole 510 connected to the rotor 500.

[0047] A ring-shaped frame assembly 100 connects multiple blades 210. Both ends of each blade 210 are connected to the frame assembly 100 along its length. The frame assembly 100 provides a fixed connection between the inner and outer ends of the blades 210, effectively improving structural stability and maintaining good structural stability even after prolonged use. The fixed connection of both the inner and outer ends of each blade 210 to the frame assembly 100 significantly limits the swing amplitude of the blades 210 and reduces resonance between the blades 210 and the motor, thereby effectively reducing noise generated by the inner fan blades during operation. Compared to existing technologies where the edges of the blades 210 are exposed to the air along their length, in this invention, the inner and outer ends of each blade 210 are connected to the frame assembly 100, thereby reducing air friction vibration generated at the inner and outer ends of the blades 210 during rapid rotation, reducing air turbulence, and generating a smoother, more efficient airflow to reduce noise. When the rotor 500 rotates, it drives the frame assembly 100 and the fan mechanism 200 to rotate via multiple pins 310. These pins 310 are spaced circumferentially around the outer periphery of the frame assembly 100. The pins 310 generate a large torque on the frame assembly 100 and the fan mechanism 200, allowing the rotor 500 to drive the inner fan blades to rotate more quickly when the motor starts. Simultaneously, because the pins 310 located on the outer periphery of the lower side of the frame assembly 100 generate a large torque on the frame assembly 100 and the fan mechanism 200, when the pins 310 are inserted into the connection holes 510 connected to the rotor 500 of the motor, they can better cope with the slight eccentricity between the inner fan blades and the motor, causing the inner fan blades to oscillate and resonating with the motor. This reduces noise generated during motor operation, increases structural strength, and extends the motor's service life.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An inner fan blade, characterized in that, include: The frame component (100) has a ring-shaped structure; The fan mechanism (200) includes a plurality of blades (210), which are circumferentially connected to the frame assembly (100), and both the inner and outer ends of the plurality of blades (210) are connected to the frame assembly (100). The fixing mechanism (300) includes a plurality of pins (310) that are circumferentially spaced at the outer periphery of the frame assembly (100) on the lower side of the frame assembly (100) and that extend axially along the frame assembly (100).

2. An inner fan blade according to claim 1, characterized in that, The frame assembly (100) includes a first ring body (110) and a second ring body (130), the first ring body (110) and the second ring body (130) are coaxially arranged, the outer diameter of the second ring body (130) is less than or equal to the outer diameter of the first ring body (110), and the inner and outer ends of the plurality of blades (210) are respectively connected to the first ring body (110) and the second ring body (130).

3. An inner fan blade according to claim 2, characterized in that, The frame assembly (100) further includes a third ring body (120), which is coaxially arranged with the second ring body (130). The outer diameter of the second ring body (130) is smaller than the outer diameter of the third ring body (120), and the third ring body (120) is connected to a plurality of the blades (210).

4. An inner fan blade according to claim 3, characterized in that, The third ring (120) is spaced apart from the first ring (110) on the side away from the pin (310).

5. An inner fan blade according to claim 4, characterized in that, The second ring (130) is disposed at an interval on the radial inner side of the third ring (120).

6. An inner fan blade according to claim 5, characterized in that, The plurality of blades (210) are connected to the upper side of the first ring body (110), the lower side of the second ring body (130), and the lower side of the third ring body (120).

7. An inner fan blade according to claim 2, characterized in that, A first reinforcing rib (230) is provided at the connection between the plurality of blades (210) and the first ring body (110).

8. An inner fan blade according to claim 1, characterized in that, A guide (320) is provided at the end of the pin (310) away from the frame assembly (100).

9. An inner fan blade according to claim 1, characterized in that, The frame assembly (100) is provided with a clearance hole (400) at its axial position.

10. An electric motor, characterized in that, Includes an inner fan blade as described in any one of claims 1 to 9.

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