Motor heat dissipation structure

Abstract

The utility model relates to the technical field of motor heat dissipation, and particularly discloses a motor heat dissipation structure which comprises a motor and a first impeller used in cooperation with the motor, the first impeller comprises a wheel disc and a first air guide plate arranged on the wheel disc, the first impeller is connected with the motor in a matched mode, and the wheel disc is provided with air guide holes. The first air guide plate protrudes out of the end face of the wheel disc in the radial direction of the wheel disc, the first air guide plate is arranged in an arc shape, and a rotor piece of the motor drives the first air guide plate to rotate through the wheel disc so as to guide external air to flow. According to the structure, the first impeller is matched with the arc-shaped first air guide plate arranged in the radial direction to accelerate air flow, the heat dissipation efficiency in the motor is effectively improved, temperature accumulation is reduced, and the service life of the motor is prolonged. In addition, the motor rotor is compact in overall structure, low in manufacturing cost, suitable for various motor environments and convenient to machine and install.

Description

Technical Field

[0001] The utility model relates to the technical field of motor heat dissipation, and in particular discloses a motor heat dissipation structure. Background Art

[0002] With the widespread use of motors in the industrial field, heat dissipation has become a key issue affecting their performance and lifespan. Traditional heat dissipation methods mainly include natural heat dissipation, air cooling, and water cooling, but each has its own shortcomings: natural heat dissipation is inefficient, air cooling is noisy and takes up space, and water cooling is expensive, complex, and difficult to maintain. Existing technologies have difficulty balancing improving heat dissipation while maintaining a compact and economical structure. Especially in high-power motors, existing solutions still cannot meet the demand for efficient heat dissipation. Therefore, it is imperative to develop an efficient, simple, economical and practical motor heat dissipation structure that can effectively improve the heat dissipation performance of the motor and extend its service life. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a motor heat dissipation structure to solve the technical problems of poor heat dissipation effect, complex structure and high cost in the prior art motors.

[0004] To achieve the above-mentioned purpose, the utility model provides a motor heat dissipation structure, including a motor and a first impeller used in conjunction with the motor, the motor having an air guide channel, the first impeller including a wheel disc and a first air guide plate arranged on the wheel disc, the wheel disc being cooperatively connected to the rotor component of the motor, the wheel disc being provided with air guide holes connected to the air guide channel, the first air guide plate being arranged to protrude from the end face of the wheel disc in the radial direction of the wheel disc, the first air guide plate being arranged in an arc shape, the rotor component of the motor drives the first air guide plate to rotate via the wheel disc to introduce or export outside air into or out of the air guide channel.

[0005] Furthermore, the motor includes an outer shell, a stator component and a rotor component. The outer shell is arranged in a cylindrical structure, and the interior of the outer shell with a cylindrical structure forms the air guide channel. The stator component and the rotor component are both located in the air guide channel; the air guide hole is connected to the air guide channel, and the rotor component is used to drive the first air guide plate on the wheel to rotate so that the outside air flows through the air guide hole through the air guide channel.

[0006] Furthermore, both ends of the outer shell are provided with end covers, and the end covers are provided with heat dissipation holes connected to the air guide channel. Two groups of first impellers are provided, and the two groups of first impellers are respectively located at the end covers at both ends of the outer shell, and the first air guide plate is arranged at one end of the wheel disc close to the heat dissipation hole.

[0007] Furthermore, the motor heat dissipation structure also includes a second impeller, which includes a support frame and a plurality of first blades arranged on the support frame, the first blades are curved sheet structures distributed in a vortex, and the plurality of first blades are evenly spaced around the central axis of the support frame, and the support frame is used to cooperate with the rotor part of the motor; the first impeller and the second impeller are respectively arranged at both ends of the air guide channel of the outer shell.

[0008] Furthermore, the wheel disc is arranged in a ring shape, and there are multiple first air guide plates, which are arranged at intervals around the central axis of the wheel disc, and the air guide holes are formed between two adjacent first air guide plates.

[0009] Furthermore, the height of the first air guide plate is gradually increased from the side of the wheel disc close to the rotation axis of the rotor component to the side away from the rotation axis of the rotor component.

[0010] Furthermore, the first impeller also includes a sleeve and a plurality of second blades, the second blades are connected between the sleeve and the wheel disc, the plurality of second blades are spaced apart around the central axis of the sleeve, the sleeve is used to cooperate with the rotating shaft of the rotor part of the motor, and the air guide hole is provided between two adjacent second blades.

[0011] Furthermore, the second blades are planar sheet structures distributed radially around the shaft sleeve or curved sheet structures distributed in a spiral pattern around the central axis of the shaft sleeve.

[0012] Furthermore, the motor heat dissipation structure also includes a metal ring used in conjunction with the first impeller, and the wheel disc is a plastic layer wrapped around the outside of the metal ring, and the wheel disc is fixed to the outside of the metal ring through an injection molding process, a glue encapsulation process or a hot pressing process.

[0013] Furthermore, an end portion of the rotor component of the motor is detachably connected to a limiting component, and the first impeller is detachably connected to the rotor component of the motor via the limiting component.

[0014] Furthermore, the first air guide plate has an arc-shaped inner concave surface for guiding air flow, and the cross-section of the arc-shaped inner concave surface and the end surface of the wheel disk where the first air guide plate is located are arranged perpendicular to each other.

[0015] Furthermore, one end of the first air guide plate is arranged close to the outer edge of the air guide hole, and the other end of the first air guide plate is arranged close to the outer edge of the wheel disc. The end of the first air guide plate close to the air guide hole gradually rises and protrudes toward the end away from the air guide hole.

[0016] The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole.

[0017] The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole.

[0019] Figure 2 The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole.

[0020] Figure 3 The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole.

[0021] Figure 4 The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole.

[0022] The utility model discloses a motor cooling structure, which comprises a motor, an outer shell, a stator, a rotor, a first impeller, a second impeller, a metal ring, a limiting piece, a shaft sleeve, a second blade, a wheel disc, a first air guide plate, an arc concave surface, an air guide hole, an outer shell body, an air guide channel, an end cover and a heat dissipation hole.

[0023] 1, first impeller;2, motor;3, second impeller;4, metal ring;5, limiting piece;10, shaft sleeve;101, second blade;11, wheel disc;12, first air guide plate;121, arc concave surface;13, air guide hole;21, outer shell body;211, air guide channel;212, end cover;213, heat dissipation hole;22, stator;23, rotor;231, rotating shaft;31, support frame;32, first blade. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and drawings, and the content mentioned in the embodiments is not a limitation of the utility model.

[0025] Please refer to Figures 1 to 4As shown, the present invention provides a structural design for heat dissipation of a motor 2, comprising a motor 2 and a first impeller 1 used in conjunction with the motor 2; the motor 2 having an air guide channel 211; the first impeller 1 comprising a wheel disc 11 and a first air guide plate 12 disposed on the wheel disc 11; the wheel disc 11 being cooperatively connected to a rotor component 23 of the motor 2; the wheel disc 11 being provided with air guide holes 13 communicating with the air guide channel 211; the first air guide plate 12 protruding from the end surface of the wheel disc 11 in the radial direction of the wheel disc 11; and being arranged in an arc shape. The rotor component 23 of the motor 2 drives the first air guide plate 12 to rotate via the wheel disc 11 to direct outside air into or out of the air guide channel 211. This ensures that outside air can flow into and out of the motor 2, achieving a heat dissipation effect. The first air guide plate 12 protrudes from the end surface of the wheel disc 11 along the radial direction of the wheel disc 11 and is arranged in an arc shape. This design enables the first air guide plate 12 to come into contact with more air when rotating at high speed with the rotor component 23, thereby better guiding the air flow and effectively improving the air flow rate and heat dissipation efficiency.

[0026] The air guide holes 13 are designed to communicate with the heat dissipation channels within the outer casing 21 of the motor 2. When the motor 2 is operating, the rotor 23 drives the first impeller 1 to rotate via the wheel disc 11. The curved structure of the first air guide plate 12 effectively guides air entering from the outside, flowing through the air guide holes 13 into the heat dissipation channels within the motor 2, and then through the areas where the stator 22 and rotor 23 of the motor 2 are located, removing heat generated during the operation of the motor 2. Because the first air guide plate 12 is radially arranged and has an arc-shaped plate shape, it can generate a strong flow of surrounding air when the rotor 23 rotates, making heat dissipation more efficient.

[0027] Through the above-mentioned structural design, the utility model effectively solves the problem of insufficient heat dissipation generated by the motor 2 when running at high load. The design of the first impeller 1 can continuously generate a strong air flow when the rotor part 23 rotates. The arc-shaped air guide plate further optimizes the guiding direction of the airflow, reduces the turbulence of the airflow, and enables the air to flow through the motor 2 more evenly and quickly, thereby effectively improving the heat dissipation effect. The through-holes 13 on the wheel 11 ensure the smooth flow of air, greatly reduce air resistance, and improve cooling efficiency. In addition, since the rotation speed of the first impeller 1 is the same as that of the rotor part 23, the air flow rate can be automatically adjusted with the rotation speed of the rotor part 23, further enhancing the adaptive heat dissipation capability of the motor 2.

[0028] Specifically, the outer shell 21 of the motor 2 has a cylindrical structure, and an air guide channel 211 for air circulation is formed inside. The stator component 22 and the rotor component 23 are both located in the air guide channel 211. The motor 2 is composed of the outer shell 21, the stator component 22, and the rotor component 23. The stator component 22 is a magnetic tile set on the inner wall of the outer shell 21, and the rotor component 23 is a rotating shaft 231 and a coil winding set on the rotating shaft 231. The first impeller 1 is mounted on the rotating shaft 231. The air guide hole 13 is connected to the air guide channel 211 in the outer shell 21, ensuring that the air in the air guide channel 211 (a second impeller 3 can be installed at the other end of the rotating shaft 231 to use the second impeller 3 to draw external air into the air guide channel 211) can be guided to the outside through the air guide hole 13 and the first air guide plate 12. When the motor 2 is running, the rotor 23 drives the wheel disc 11 and the first impeller 1 to rotate. The first air guide plate 12, through its curved structure, effectively guides the air flow, forcing the air to be radially directed out of the air guide channel 211. This allows external air to flow through the air guide channel 211 of the outer housing 21 (through the areas where the stator 22 and rotor 23 are located), dissipating heat from the motor 2 and forming an efficient heat dissipation path.

[0029] Specifically, both ends of the outer casing 21 of the motor 2 are provided with end covers 212, and the end covers 212 are provided with heat dissipation holes 213 that are connected to the air guide channel 211. The first impellers 1 are provided in two groups, respectively located near the end covers 212 at both ends of the outer casing 21. Each group of first impellers 1 is connected to the rotor component 23 of the motor 2 through its wheel disc 11. The wheel disc 11 is provided with a plurality of air guide holes 13, through which external air can enter the air guide channel 211. The first air guide plate 12 protrudes radially from the wheel disc 11 and is provided at one end near the heat dissipation holes 213 of the end cover 212, and is distributed in an arc shape. This structure drives the two groups of first impellers 1 to rotate through the rotor component 23, so that external air enters the air guide channel 211 through the heat dissipation holes 213 at both ends, thereby ensuring that external air flows through the stator component 22 and rotor component 23 areas inside the motor 2, achieving efficient heat dissipation.

[0030] In actual operation, after motor 2 is started, the rotor assembly 23 drives the two sets of first impellers 1 to rotate synchronously. The curved first air guide plates 12 on the impellers effectively guide air into the outer housing 21 through the heat dissipation holes 213 at one end and out through the heat dissipation holes 213 at the other end. The incoming air flows along the air guide channel 211, passing through the areas where the stator assembly 22 and rotor assembly 23 are located, removing heat generated during operation. This combination of air intake and the rotating air guide plates guides outflow, creating a continuous, strong, unidirectional airflow that maintains temperature control within motor 2 and ensures more uniform and efficient heat dissipation.

[0031] Specifically, the heat dissipation structure of motor 2 also includes a second impeller 3. The first impeller 1 and the second impeller 3 are respectively disposed at both ends of the air guide channel 211 of the outer shell 21 to enhance air circulation and heat dissipation. The first impeller 1 is composed of a wheel disc 11 and a first air guide plate 12 radially extending from the wheel disc 11. It is disposed at one end of the air guide channel 211 of the outer shell 21 of motor 2, near the heat dissipation holes 213 of the end cover 212. The second impeller 3 includes a support frame 31 and a plurality of first blades 32 uniformly arranged around the central axis of the support frame 31. The first blades 32 are curved sheet-like structures distributed in a spiral shape and are evenly spaced. The second impeller 3 is disposed at the other end of the outer shell 21.

[0032] When the motor 2 is started, the rotor component 23 drives the first impeller 1 and the second impeller 3 to rotate synchronously. The second impeller 3 draws in cold air from the outside through its vortex-shaped second blades 101. The cold air enters the air guide channel 211 through the heat dissipation holes 213 on the end cover 212, and flows rapidly along the air guide channel 211 with the assistance of the first impeller 1. The vortex-shaped curved blades of the second impeller 3 further enhance the fluidity of the airflow when rotating at high speed, ensuring that the cold air can effectively cover the various heat dissipation areas inside the motor 2. The design of the second impeller 3 not only enhances the entry speed of the airflow, but also forms a stable and strong flow path for the air through the guidance of the vortex blades, thereby achieving rapid heat exchange. The cold air passes through the heat dissipation areas of the stator component 22 and the rotor component 23, takes away the heat generated inside the motor 2, and is discharged through the heat dissipation holes 213 at one end of the outer shell 21 close to the first impeller 1.

[0033] The heat dissipation structure forms an airflow circulation through the synergistic effect of the first impeller 1 and the second impeller 3, so that air can circulate efficiently and cover the entire interior of the motor 2, thereby improving the heat dissipation efficiency.

[0034] Specifically, the first impeller 1 comprises an annular wheel disc 11 and a plurality of first air guide plates 12. The plurality of first air guide plates 12 are evenly spaced about the central axis of the wheel disc 11, with air guide holes 13 formed between adjacent first air guide plates 12. The first impeller 1 is fixedly connected to the rotor member 23 of the motor 2 via its wheel disc 11, and rotates synchronously with the rotation of the motor 2.

[0035] The second impeller 3 includes a support frame 31 and a plurality of first blades 32 distributed in a spiral shape. The blades are curved sheet-like structures and are evenly spaced around the central axis of the support frame 31. The second impeller 3 is arranged at the other end of the motor 2. With the help of the design of the spiral blades, the airflow is guided through the air guide channel 211 inside the outer shell 21 of the motor 2, thereby enhancing the circulation of internal air. After the motor 2 is started, the second impeller 3 uses its first blades 32 to suck in external air through the heat dissipation holes 213 of the end cover 212, and the air enters the interior of the motor 2 through the air guide holes 13. At the same time, the first air guide plate 12 and the second blades 101 of the second impeller 3 accelerate the air flow, so that the cold air quickly flows out of the air guide channel 211, taking away the heat of the heating element, thereby achieving efficient heat dissipation.

[0036] This heat dissipation design allows air to enter and be exhausted at both ends of the motor 2, forming a two-way airflow heat dissipation mode, which improves the efficiency of air flow and the cooling effect through synergistic effect.

[0037] Specifically, the height of the first air deflector 12 gradually increases from the side of the wheel disc 11 closest to the rotation axis of the rotor member 23 to the side further away from the rotation axis of the rotor member 23, thereby optimizing air guidance and improving the heat dissipation performance of the motor 2. In this solution, the first air deflector 12 is arranged along the radial direction of the wheel disc 11 and gradually increases in height. The key technical approach of this design is to utilize the variation in blade height to produce more effective aerodynamic effects.

[0038] Specifically: the wheel 11 is connected to the rotor part 23 of the motor 2: the wheel 11 is fixedly mounted on the rotor part 23 of the motor 2, and drives the first air guide plate 12 to rotate together with the motor 2 when it runs. The wheel 11 is provided with a through air guide hole 13 so that the air flow can pass smoothly. The layout of the first air guide plate 12 and its height change: the first air guide plate 12 is arranged in an arc shape, and its height gradually increases from the side close to the axis of rotation. Such a height design can generate centrifugal force during rotation, thereby increasing the speed and flow of the air flow. When the impeller rotates, the lower height part of the blades close to the axis first contacts the air, guiding the initial air flow into the flow channel between the blades, while the blades with increasing height accelerate the air flow away from the axis of rotation, ensuring that the air flow is effectively discharged outward and increasing the air flow pressure.

[0039] Specifically, the first impeller 1 also includes a sleeve 10 and a plurality of second blades 101. The second blades 101 are connected between the sleeve 10 and the wheel disc 11. The plurality of second blades 101 are spaced apart around the central axis of the sleeve 10. The sleeve 10 is used to cooperate with the rotating shaft 231 of the rotor part 23 of the motor 2 (the motor 2 in this embodiment is an internal rotation motor. In actual use, the first impeller 1 can be installed on the rotor of an external transmission motor). An air guide hole 13 is provided between two adjacent second blades 101. The sleeve 10 is connected to the rotating shaft 231 of the motor 2 by a mechanical connection method (such as a thread, an interference fit, or a flat key connection) to ensure that the sleeve 10 can reliably rotate with the rotating shaft 231 of the motor 2, thereby driving the entire first impeller 1 and the blades thereon (including the first air guide plate 12 and the second blades 101) to rotate synchronously.

[0040] Multiple second blades 101 are spaced apart between the sleeve 10 and the disc 11, arranged around the central axis of the sleeve 10. The ends of each second blade 101 are fixed to corresponding positions on the sleeve 10 and disc 11, respectively, forming a series of airflow channels between the sleeve 10 and disc 11. The spaces between adjacent second blades 101 serve as air guide holes 13, allowing air to enter the disc 11 through these holes and participate in the overall heat dissipation cycle.

[0041] Specifically, the second blades 101 are planar sheet structures distributed radially around the sleeve 10 or curved sheet structures distributed in a vortex around the central axis of the sleeve 10. The arrangement of the second blades 101 is as follows: a plurality of second blades 101 surround the sleeve 10 in a uniformly spaced manner and are radially distributed between the sleeve 10 and the wheel 11. These second blades 101 can be selected as planar sheet structures or curved sheet structures according to specific design requirements. The blades of the planar sheet structure are distributed straight along the radial direction and are linearly guided with the airflow, while the blades of the curved sheet structure are in a spiral or vortex shape, guiding the airflow to flow in a rotational manner through the curved surface structure, thereby increasing the flow path and flow rate of the air.

[0042] In this embodiment, the second blades 101 utilize a vortex-distributed curved sheet-like structure. Compared to a flat blade structure, the curved sheet-like blade design utilizes a spiral shape to guide air into a rotating motion, creating a vortex effect as the air flows through the air guide holes 13 between the blades. This vortex-like airflow has higher kinetic energy, effectively removing more heat upon discharge, making it suitable for motors 2 that require stronger heat dissipation.

[0043] Specifically, the heat dissipation structure of motor 2 also includes a metal ring 4 for use with first impeller 1. Disc 11 is a plastic layer coated around the outside of metal ring 4. Disc 11 is secured to the outside of metal ring 4 via injection molding, encapsulation, or hot pressing. Disc 11 is uniformly coated with a layer of plastic material around the outside of metal ring 4 through injection molding, encapsulation, or hot pressing, forming an integrated structure with metal ring 4. This structure provides stable support thanks to the mechanically strong metal ring 4, ensuring it remains stable during high-speed rotation. The plastic coating also reduces the overall weight of the impeller.

[0044] By coating the metal ring 4 with a plastic layer, the heat dissipation structure of the motor 2 effectively combines mechanical strength with heat dissipation performance. The metal ring 4 has excellent thermal conductivity, quickly conducting heat away from the motor 2 and preventing heat accumulation. The plastic coating effectively reduces the mass of the impeller 11, reducing the rotational inertia of the motor 2, improving the efficiency of the heat dissipation structure, and reducing energy consumption. Compared to impellers made entirely of metal, this design with a plastic coating on the metal ring 4 offers significant cost savings.

[0045] Specifically, the end of the rotor component 23 of the motor 2 is detachably connected to the limit member 5, and the first impeller 1 is detachably connected to the rotor component 23 of the motor 2 via the limit member 5. In this embodiment, the limit members 5 are mounted on both ends of the rotating shaft 231 via threaded connections. The first impeller 1 and the second impeller 3 are mounted on both ends of the rotating shaft 231 via an interference fit. The two limit members 5 secure the first impeller 1 and the second impeller 3 to the ends of the rotating shaft 231.

[0046] The detachable connection between the stopper 5, the rotor assembly 23, and the first impeller 1 allows for quick and easy removal of the first impeller 1 during maintenance or overhaul of the motor 2, eliminating the need for complex operations. This effectively reduces maintenance time and minimizes downtime losses. Furthermore, by replacing impellers of different sizes, heat dissipation performance can be optimized under specific operating conditions.

[0047] Specifically, the first air guide plate 12 in the heat dissipation structure of the motor 2 is designed to have an arc-shaped inner concave surface 121. The cross-section of the arc-shaped inner concave surface 121 is perpendicular to the end face of the wheel 11 where the first air guide plate 12 is located, and is used to guide the effective flow of air. The first air guide plate 12 is fixedly connected to the wheel 11, and as the rotor part 23 rotates, it drives the air flow, thereby forming a heat dissipation airflow. By designing the first air guide plate 12 with an arc-shaped inner concave surface 121, the airflow guidance and acceleration effects can be enhanced, making the flow of cold air smoother, while reducing the turbulence and backflow of the airflow. This design can more efficiently guide the cooling airflow into the interior of the motor 2 when the impeller rotates, taking away the heat generated by the rotor part 23 and the stator part 22, thereby significantly improving the heat dissipation efficiency of the motor 2 and preventing the motor 2 from overheating.

[0048] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A motor heat dissipation structure, characterized in that: The invention comprises a first impeller (1), wherein the first impeller (1) is connected to an external driving member, the first impeller (1) comprises a wheel disc (11) and a first air guide plate (12) arranged on the wheel disc (11), the wheel disc (11) is provided with an air guide hole (13) penetrating therethrough, the first air guide plate (12) is arranged to protrude from the end surface of the wheel disc (11) in a radial direction of the wheel disc (11), the first air guide plate (12) is arranged in an arc shape, and the external driving member drives the first air guide plate (12) to rotate to guide the flow of external air; The motor (2) is also included for use with the first impeller (1), the motor (2) including an outer shell (21), a stator component (22) and a rotor component (23), the outer shell (21) being cylindrical, an air guide channel (211) being formed inside the cylindrical outer shell (21), the stator component (22) and the rotor component (23) both being located in the air guide channel (211); the air guide hole (13) being connected to the air guide channel (211), the rotor component (23) of the motor (2) being connected to the first impeller (1) for driving the first air guide plate (12) of the first impeller (1) to rotate so that external air flows through the air guide hole (13) and the air guide channel (211); The motor heat dissipation structure further includes a second impeller (3), the second impeller (3) including a support frame (31) and a plurality of first blades (32) arranged on the support frame (31), the first blades (32) being a curved sheet structure with a vortex distribution, the plurality of first blades (32) being evenly spaced around the central axis of the support frame (31), the support frame (31) being used for being connected to the rotor member (23) of the motor (2); the first impeller (1) and the second impeller (3) being respectively arranged at two ends of the air guide channel (211) of the outer shell (21).

2. The motor heat dissipation structure according to claim 1, characterized in that: Both ends of the outer shell (21) are provided with end covers (212), and the end covers (212) are provided with heat dissipation holes (213) connected to the air guide channel (211). Two groups of first impellers (1) are provided, and the two groups of first impellers (1) are respectively located at the end covers (212) at both ends of the outer shell (21). The first air guide plate (12) is provided at one end of the wheel disc (11) close to the heat dissipation holes (213).

3. The motor heat dissipation structure according to claim 1, characterized in that: The wheel disc (11) is arranged in an annular shape, and the number of the first air guide plates (12) is multiple, and the multiple first air guide plates (12) are arranged at intervals around the central axis of the wheel disc (11), and the air guide holes (13) are formed between two adjacent first air guide plates (12).

4. The motor heat dissipation structure according to claim 1, characterized in that: The height of the first air guide plate (12) is gradually increased from the side of the wheel disc (11) close to the rotation axis of the rotor component (23) to the side away from the rotation axis of the rotor component (23).

5. The motor heat dissipation structure according to claim 1, characterized in that: The first impeller (1) further comprises a shaft sleeve (10) and a plurality of second blades (101), the second blades (101) being connected between the shaft sleeve (10) and the wheel disc (11), the plurality of second blades (101) being arranged at intervals around the central axis of the shaft sleeve (10), the shaft sleeve (10) being used for being connected in cooperation with the rotating shaft (231) of the rotor member (23) of the motor (2), and the air guide hole (13) being provided between two adjacent second blades (101).

6. The motor heat dissipation structure according to claim 5, characterized in that: The second blade (101) is a planar sheet-like structure distributed radially around the shaft sleeve (10) or a curved sheet-like structure distributed in a vortex around the central axis of the shaft sleeve (10).

7. The motor heat dissipation structure according to claim 1, characterized in that: The motor heat dissipation structure further comprises a metal ring (4) used in conjunction with the first impeller (1); the wheel disc (11) is a plastic layer coated on the outside of the metal ring (4); the wheel disc (11) is arranged on the outside of the metal ring (4) through an injection molding process, a plastic coating process or a hot pressing process.

8. The motor heat dissipation structure according to claim 1, characterized in that: The first air guide plate (12) has an arc-shaped inner concave surface (121) for guiding air flow, and a section of the arc-shaped inner concave surface (121) and an end surface of the wheel (11) on which the first air guide plate (12) is located are arranged perpendicular to each other.

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