Motor heat dissipation structure

Abstract

The utility model relates to motor technical field provides a kind of motor heat dissipation structure, including axial fan blade, first casing, drive assembly and fairing. Wherein, axial fan blade can produce airflow;Drive assembly is installed in first casing, and the outside wall of first casing is provided with fin and shunt, and the shaft of drive assembly is connected axial fan blade after passing through sealing cover, and shunt includes flow guide part and first plug-in part, and first plug-in part extends along the radial direction of axial fan blade, along airflow direction, and flow guide part is located in the upstream of first plug-in part, and airflow changes flow direction along flow guide part, to bypass first plug-in part;Fairing is sleeved in first casing and is fixed with it, and first flow channel is formed between the two, and first fairing is provided with first clamping slot along the axial direction of axial fan blade, and first plug-in part is inserted into first clamping slot. Thus, the stable connection of first casing and fairing can be maintained, and the noise formed at the connection of airflow can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a motor heat dissipation structure. Background Technology

[0002] When an electric motor is running, current flows through the windings and iron core, generating losses (mainly copper and iron losses), which are ultimately dissipated as heat. If the heat cannot be dissipated effectively and in a timely manner, the internal temperature of the motor will continue to rise, leading to aging of the insulation materials, performance degradation, and even motor burnout.

[0003] In existing structures, heat dissipation fins are generally installed on the outside of the motor for cooling, and a guide shroud is installed on the outside of the motor to concentrate the airflow so that the airflow can flow more concentratedly through the heat dissipation fins. However, in general, the housing and the guide shroud are fixedly connected, and the airflow impacts the connecting parts when it flows through the connection, generating noise.

[0004] Therefore, there is an urgent need for a motor heat dissipation structure to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a motor heat dissipation structure that can maintain a stable connection between the housing and the air guide, and reduce the noise generated by the airflow at the connection point.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A motor heat dissipation structure, comprising:

[0008] Axial fan blades are capable of generating airflow;

[0009] A first housing and a drive assembly installed inside the first housing. The outer side wall of the first housing is provided with fins and a flow divider. The shaft of the drive assembly passes through the sealing cover and connects to the axial flow fan blade. The flow divider includes a guide portion and a first insertion portion. The first insertion portion extends radially along the axial flow fan blade. Along the airflow direction, the guide portion is located upstream of the first insertion portion. The airflow changes direction along the guide portion to bypass the first insertion portion.

[0010] A flow guide is fitted onto and fixed to the first housing, forming a first flow channel between them. The flow guide has a first slot along the axial direction of the axial flow fan blade, and the first insertion part is inserted into the first slot.

[0011] As a preferred technical solution of the above-mentioned motor heat dissipation structure, the above-mentioned diverter is provided with a first slot along the axial direction of the above-mentioned axial flow fan blade, for insertion into the second housing of the controller along the axial direction of the above-mentioned axial flow fan blade.

[0012] As a preferred technical solution of the above-mentioned motor heat dissipation structure, the above-mentioned diverter is provided with a first threaded hole, the above-mentioned first housing is provided with a first light hole, the above-mentioned first light hole corresponds one-to-one with the above-mentioned first threaded hole, and the first threaded fastener passes through the above-mentioned first light hole and is threadedly connected to the above-mentioned first threaded hole.

[0013] As a preferred technical solution for the above-mentioned motor heat dissipation structure, multiple diverter components are provided, and the multiple diverter components are evenly distributed around the circumference of the first housing.

[0014] As a preferred technical solution of the above-mentioned motor heat dissipation structure, the above-mentioned guide portion is arc-shaped, the two ends of the above-mentioned guide portion are connected to the two side walls of the above-mentioned first plug portion, and the middle part of the above-mentioned guide portion bulges away from the side of the above-mentioned first plug portion.

[0015] As a preferred technical solution of the above-mentioned motor heat dissipation structure, the first housing is further provided with a mounting post, the mounting post is provided with a second threaded hole, the flow guide is provided with a second light hole, the second threaded hole and the second light hole are provided in a one-to-one correspondence, the second threaded fastener passes through the second light hole and is threadedly connected to the second threaded hole, and the mounting post and the flow divider are provided at intervals along the axial direction of the axial flow fan blade.

[0016] As a preferred technical solution for the above-mentioned motor heat dissipation structure, the axial fan blades and the sealing cover are sealed by a labyrinth structure.

[0017] As a preferred technical solution of the above-mentioned motor heat dissipation structure, the first plug part is provided with a mounting hole on the side opposite to the axial fan blade, for connecting with the second housing of the controller through a third threaded fastener.

[0018] As a preferred technical solution of the above-mentioned motor heat dissipation structure, the rotating shaft is connected to the propeller through a flange, the rotating shaft is provided with a second insertion part, and the inner wall of the flange is provided with a second slot along the axial direction of the rotating shaft, and the second insertion part is inserted into the second slot.

[0019] As a preferred technical solution for the above-mentioned motor heat dissipation structure, the above-mentioned rotating shaft and the above-mentioned flange are connected by anti-loosening washers and lock nuts.

[0020] The beneficial effects of this utility model are:

[0021] A motor heat dissipation structure is provided, including an axial fan blade, a first housing, a drive assembly, and a flow guide. The axial fan blade generates airflow. The drive assembly is installed inside the first housing. The outer wall of the first housing is provided with fins and a flow divider. The shaft of the drive assembly passes through a sealing cover and connects to the axial fan blade. The flow divider includes a flow guide portion and a first insertion portion. The first insertion portion extends radially along the axial fan blade. Along the airflow direction, the flow guide portion is located upstream of the first insertion portion, and the airflow changes direction along the flow guide portion to bypass the first insertion portion. The flow guide is fitted onto and fixed to the first housing, forming a first flow channel between them. The flow guide has a first slot along the axial direction of the axial fan blade, and the first insertion portion is inserted into the first slot.

[0022] The drive assembly includes a rotor and a stator. The stator is fixed to the inner wall of the first housing, and the rotor is rotatably inserted into the stator. The rotor is used to coaxially fix the motor shaft, which at least partially extends out of the first housing and connects to the axial fan blades. When the axial fan blades start, they generate airflow. Fins are provided on the outer wall of the first housing, with multiple fins distributed on the outer peripheral sidewalls. The fins increase the heat dissipation area of ​​the motor's first housing, improving its heat dissipation performance. A flow guide is fitted over the outside of the first housing, forming a first flow channel. The airflow generated by the axial fan blades can flow axially through the first flow channel and exchange heat with the fins located within it.

[0023] Furthermore, in order to maintain the connection stability between the flow guide and the first housing, the flow divider is provided with a first insertion part, and the flow guide is provided with a corresponding first slot. The first insertion part and the first slot are one-to-one. The first insertion part and the first slot are inserted into each other along the axial direction of the axial flow fan blade, and the insertion direction is opposite to the flow direction of the airflow.

[0024] Furthermore, since the first insertion part is located in the airflow path, it obstructs the smooth passage of airflow. When the airflow impacts the first insertion part, it is prone to generating noise and turbulence. Therefore, the flow divider is provided with a guide part, which is inclined to redirect the air blown in axial direction. Along the axial direction, the flow divider is located upstream of the first insertion part, so that the airflow that should flow to the first insertion part is diverted by the flow divider and flows to both sides. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the motor heat dissipation structure provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the first housing provided in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the diversion component provided in this embodiment of the utility model. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the maze structure provided in this embodiment of the utility model;

[0029] Figure 5 This is an assembly diagram of the rotating shaft and flange provided in an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the flow guide provided in this embodiment of the utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the diversion component provided in this embodiment of the utility model. Figure 2 ;

[0032] Figure 8 for Figure 7 A magnified view of a portion of the flow divider.

[0033] In the picture:

[0034] 1. Axial flow fan blades;

[0035] 21. First housing; 211. Fin; 212. Diverter; 212a. First slot; 212b. First insertion part; 212c. Guide part; 212d. Mounting hole; 213. Mounting post; 22. Sealing cover; 221. Labyrinth structure; 23. Shaft; 231. Second insertion part; 24. Flange; 25. Anti-loosening washer; 26. Locking nut;

[0036] 3. Draft shield; 31. First slot. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] 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.

[0041] like Figures 1 to 8As shown, a motor heat dissipation structure is provided, including an axial fan blade 1, a first housing 21, a drive assembly, and a flow guide shroud 3. The axial fan blade 1 generates airflow. The drive assembly is installed inside the first housing 21. The outer wall of the first housing 21 is provided with fins 211 and a flow divider 212. The drive assembly's rotating shaft 23 passes through a sealing cover 22 and connects to the axial fan blade 1. The flow divider 212 includes a flow guide portion 212c and a first insertion portion 212b. The first insertion portion 212b extends radially along the axial fan blade 1. Along the airflow direction, the flow guide portion 212c is located upstream of the first insertion portion 212b, and the airflow changes direction along the flow guide portion 212c to bypass the first insertion portion 212b. The flow guide shroud 3 is sleeved on and fixed to the first housing 21, forming a first flow channel between them. The flow guide shroud 3 has a first slot 31 along the axial direction of the axial fan blade 1, and the first insertion portion 212b is inserted into the first slot 31.

[0042] For example, the drive assembly includes a rotor and a stator. The stator is fixed to the inner wall of the first housing 21, and the rotor is rotatably inserted into the stator. The rotor is used to coaxially fix the motor shaft 23. The shaft 23 extends at least partially out of the first housing 21 and connects to the axial fan blade 1. When the axial fan blade 1 starts, it generates airflow. Fins 211 are provided on the outer wall of the first housing 21. Multiple fins 211 are provided and distributed on the outer peripheral sidewall of the first housing 21. The arrangement of the fins 211 increases the heat dissipation area of ​​the first housing 21 of the motor, thereby improving its heat dissipation performance. A flow guide shroud 3 is sleeved on the outside of the first housing 21, forming a first flow channel between the two. The airflow generated by the axial fan blade 1 can flow axially through the first flow channel and exchange heat with the fins 211 located in the first flow channel.

[0043] Furthermore, in order to maintain the connection stability between the flow guide 3 and the first housing 21, the flow divider 212 is provided with a first insertion part 212b, and the flow guide 3 is provided with a corresponding first slot 31. The first insertion part 212b and the first slot 31 correspond one-to-one. The first insertion part 212b and the first slot 31 are inserted into each other along the axial direction of the axial flow fan blade 1, and the insertion direction is opposite to the flow direction of the airflow.

[0044] Furthermore, since the first insertion part 212b is located in the airflow path, it obstructs the smooth passage of airflow. When the airflow impacts the first insertion part 212b, it is easy to generate noise and turbulence. Therefore, the diverter 212 is provided with a guide part 212c. The guide part 212c is inclined and can reverse the direction of the air blown in axial direction. Along the axial direction, the diverter 212 is located upstream of the first insertion part 212b, so that the airflow that should flow to the first insertion part 212b is diverted by the diverter 212 and flows to both sides.

[0045] Optionally, the diverter 212 has a first slot 31 along the axial direction of the axial flow fan blade 1 for insertion into the second housing of the controller along the axial direction of the axial flow fan blade 1.

[0046] This configuration facilitates the alignment and installation of the motor and controller, preventing them from rotating circumferentially.

[0047] Optionally, the diverter 212 has a first threaded hole, and the first housing 21 has a first open hole. The first open hole corresponds one-to-one with the first threaded hole, and the first threaded fastener passes through the first open hole and is threadedly connected to the first threaded hole. This arrangement can maintain the connection stability between the first housing 21 and the flow guide 3.

[0048] Optionally, multiple diverter components 212 are provided, and the multiple diverter components 212 are evenly distributed around the circumference of the first housing 21.

[0049] Optionally, the guide section 212c is arc-shaped, with both ends connected to the side walls of the first insertion section 212b, and the middle part of the guide section 212c bulging towards the side away from the first insertion section 212b. This configuration, where the side edges of the guide section 212c connect to the side edges of the first insertion section 212b, reduces the airflow diversion range, allowing the airflow to contact as many fins 211 as possible for heat exchange while bypassing the first insertion section 212b.

[0050] Optionally, the first housing 21 is further provided with a mounting post 213, the mounting post 213 is provided with a second threaded hole, the flow guide 3 is provided with a second light hole, the second threaded hole and the second light hole are provided in a one-to-one correspondence, the second threaded fastener passes through the second light hole and is threadedly connected to the second threaded hole, the mounting post 213 and the flow divider 212 are provided at intervals along the axial direction of the axial flow fan blade 1.

[0051] Optionally, the axial fan blade 1 and the sealing cover 22 are sealed by a labyrinth structure 221.

[0052] For example, a first annular protrusion is formed on the side of the axial fan blade 1 facing the sealing cover 22. The first annular protrusion is coaxial with the axial fan blade 1. Multiple first annular protrusions are provided, and the radii of the multiple first annular protrusions are all different. A first annular groove is formed between two adjacent first annular protrusions. A second annular protrusion is formed on the side of the sealing cover 22 facing the axial fan blade 1. The second annular protrusion is coaxial with the axial fan blade 1. Multiple second annular protrusions are provided, and the radii of the multiple second annular protrusions are all different. A second annular groove is formed between two adjacent second annular protrusions. The first annular protrusion is inserted into the second annular groove, and the second annular protrusion is inserted into the first annular groove, thus forming a labyrinth structure 221 to achieve a sealing effect.

[0053] Optionally, the first plug-in portion 212b has a mounting hole 212d on the side opposite to the axial flow fan blade 1 for connecting to the second housing of the controller via a third threaded fastener.

[0054] Optionally, the shaft 23 is connected to the propeller via the flange 24. The shaft 23 is provided with a second insertion part 231. The inner wall of the flange 24 is provided with a second slot along the axial direction of the shaft 23. The second insertion part 231 is inserted into the second slot.

[0055] Thus, the insertion of the second insertion part 231 into the second slot can restrict the synchronous rotation of the rotating shaft 23 and the flange 24, prevent relative rotation between the two, and thus ensure the synchronicity between the propeller connected to the flange 24 and the rotating shaft 23.

[0056] Optionally, the shaft 23 and the flange 24 are connected by an anti-loosening washer 25 and a lock nut 26.

[0057] In this way, flange 24 can be quickly replaced to fit different propellers.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A motor heat dissipation structure, characterized in that, include: Axial flow fan blades (1) are capable of generating airflow; The first housing (21) and the drive assembly installed in the first housing (21) are provided with fins (211) and a flow divider (212) on the outer side wall of the first housing (21). The rotating shaft (23) of the drive assembly passes through the sealing cover (22) and is connected to the axial flow fan blade (1). The flow divider (212) includes a flow guide (212c) and a first insertion part (212b). The first insertion part (212b) extends radially along the axial flow fan blade (1) along the airflow direction. The flow guide (212c) is located upstream of the first insertion part (212b). The airflow changes direction along the flow guide (212c) to bypass the first insertion part (212b). The flow guide (3) is sleeved on the first housing (21) and fixed thereto, forming a first flow channel between the two. The flow guide (3) has a first slot (31) along the axial direction of the axial flow fan blade (1), and the first insertion part (212b) is inserted into the first slot (31).

2. The motor heat dissipation structure according to claim 1, characterized in that, The diverter (212) has a first slot (31) along the axial direction of the axial flow fan blade (1) for insertion into the second housing of the controller along the axial direction of the axial flow fan blade (1).

3. The motor heat dissipation structure according to claim 2, characterized in that, The diverter (212) has a first threaded hole, and the first housing (21) has a first light hole. The first light hole corresponds to the first threaded hole. The first threaded fastener passes through the first light hole and is threadedly connected to the first threaded hole.

4. The motor heat dissipation structure according to claim 1, characterized in that, Multiple diverter components (212) are provided, and the multiple diverter components (212) are evenly distributed around the first housing (21) in the circumference.

5. The motor heat dissipation structure according to claim 1, characterized in that, The flow guide (212c) is arc-shaped, and its two ends are connected to the two side walls of the first insertion part (212b). The middle part of the flow guide (212c) protrudes to the side away from the first insertion part (212b).

6. The motor heat dissipation structure according to claim 1, characterized in that, The first housing (21) is also provided with a mounting post (213), the mounting post (213) is provided with a second threaded hole, the flow guide (3) is provided with a second light hole, the second threaded hole and the second light hole are provided in a one-to-one correspondence, the second threaded fastener passes through the second light hole and is threadedly connected to the second threaded hole, the mounting post (213) and the flow divider (212) are spaced apart along the axial direction of the axial flow fan blade (1).

7. The motor heat dissipation structure according to claim 1, characterized in that, The axial fan blade (1) and the sealing cover (22) are sealed by a labyrinth structure (221).

8. The motor heat dissipation structure according to claim 1, characterized in that, The first plug-in part (212b) has a mounting hole (212d) on the side opposite to the axial fan blade (1) for connecting to the second housing of the controller via a third threaded fastener.

9. The motor heat dissipation structure according to any one of claims 1-8, characterized in that, The rotating shaft (23) is connected to the propeller via a flange (24). The rotating shaft (23) has a second insertion part (231) protruding from it. The inner wall of the flange (24) has a second slot along the axial direction of the rotating shaft (23). The second insertion part (231) is inserted into the second slot.

10. The motor heat dissipation structure according to claim 9, characterized in that, The rotating shaft (23) and the flange (24) are connected by an anti-loosening washer (25) and a locking nut (26).

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