Axial magnetic yoke motor

Abstract

This invention proposes an axial magnetic yoke motor, including a housing, a coil mounted on a front magnetic yoke disk, end covers on both sides of the housing, a rotor disk at the center of the housing, a rotor disk mounted on a shaft, and a permanent magnet on the outside of the rotor disk. Both ends of the shaft are rotatably mounted at the center of the end covers, extending beyond the end covers. Fans are located inside a fan shroud, one end of which is connected to the end cover, with an air outlet gap between the end cover and the shroud. An air guide slope is provided from the center of the end cover outwards, guiding the airflow from the air outlet gap to the surface of the end cover. In use, the fans rotate with the shaft. When the fans rotate, the airflow, guided by the air guide slope, travels along the surface of the air guide slope, allowing the airflow from the air outlet gap to flow across the entire surface of the end cover, thereby dissipating heat from the end cover surface and cooling the motor.

Description

Technical Field

[0001] This utility model relates to the field of magnetic yoke motor technology, specifically to an axial magnetic yoke motor. Background Technology

[0002] Axial yoke motors, also known as disc motors or disk motors, have high power density. Due to optimized magnetic circuit design, disc motors can generate large torque and power within a small volume, making them excellent in space-constrained applications. The short axial length of axial yoke motors allows for a flat motor profile, resulting in a compact structure and thinner profile, making them particularly suitable for space-limited applications. Their flat structure not only saves space but also facilitates heat dissipation. Furthermore, they possess high torque density because the large air gap radius of disc motors increases torque density by over 30%. In addition, the high torque density of disc motors allows them to provide greater torque within the same volume.

[0003] Because axial magnetic yoke motors are flat, most of the heat generated inside them is exchanged with the outside environment through the sides of the motor. When the motor operates for extended periods, although the axial magnetic yoke motor has a large side area and good heat dissipation performance, traditional cooling methods still provide limited cooling. Furthermore, the lack of air circulation between the casing and the surrounding environment results in low heat dissipation efficiency. Therefore, we propose the axial magnetic yoke motor to solve these technical problems. Utility Model Content

[0004] This invention provides an axial magnetic yoke motor, which has the advantage that during the operation of the motor, there is always a flowing airflow on the surface of the end caps on both sides, thereby enabling the motor to dissipate heat quickly, thus solving the problems mentioned in the background art.

[0005] The technical solution of this utility model is implemented as follows: An axial magnetic yoke motor includes a housing, a rear magnetic yoke disk and a front magnetic yoke disk inside the housing, a coil on the front magnetic yoke disk, end covers on both sides of the housing, a rotor disk at the center of the housing, the rotor disk being mounted on a shaft, and a permanent magnet on the outside of the rotor disk, the two ends of the shaft being rotatably mounted at the center of the end covers, both ends of the shaft extending outside the end covers, and also includes fans at both ends of the shaft, the fans being located inside a fan shroud, one end of the fan shroud being connected to the end cover, and an air outlet gap being provided between the end cover and the fan shroud, and a guide slope being provided from the center of the end cover to its edge, the guide slope guiding the airflow from the air outlet gap to the surface of the end cover.

[0006] Preferably, the edge of the shroud is provided with multiple support legs, which are detachably connected to the end cap.

[0007] Preferably, an air guide inlet is provided on the side of the wind shroud near the air guide slope, and the air guide inlet directs the airflow to the air guide slope.

[0008] Preferably, the end of the shroud away from the end cover is detachably provided with an annular ring, and a protective net is provided inside the annular ring.

[0009] Preferably, each of the two end caps has a yoke mounting groove at the edge of its opposite surface, the position and size of which correspond to the rear yoke disk and the front yoke disk, respectively, and the rear yoke disk and the front yoke disk are placed in the yoke mounting groove.

[0010] Preferably, the outer shell edge and the end cap edge are detachably connected.

[0011] Preferably, bearing grooves are provided at the center of the opposite surfaces of the two end caps, bearings are provided in the bearing grooves, and shafts are installed in the bearings.

[0012] Preferably, a sealing groove is provided on the side of the two bearing grooves that are far apart from each other, and a shaft seal is provided inside the seal.

[0013] Preferably, the bottom of the housing is provided with a mounting base, and the side is provided with a junction box connected to the coil.

[0014] Compared with the prior art, this utility model has fans at both ends of the shaft during use, so that the fans rotate with the shaft. When the fans rotate, the airflow will travel along the surface of the air guide slope under the guidance of the air guide slope, so that the airflow from the air outlet gap can flow on the entire surface of the end cover, thereby blowing away the heat on the surface of the end cover and allowing the motor to cool down quickly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of the present utility model. Figure 1 .

[0017] Figure 2 This is a cross-sectional view of the present utility model. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the structure of the wind shield of this utility model.

[0019] Figure 4 This is a schematic diagram of the bottom structure of the wind shield of this utility model.

[0020] In the diagram: 1. Mounting base; 2. Bearing groove; 3. Rear yoke disk; 4. Permanent magnet; 5. Rotor disk; 6. Shaft; 7. Bearing; 8. Insulating pad; 9. Bolt; 10. Housing; 11. Coil; 12. Junction box; 13. Front yoke disk; 14. End cover; 15. Shaft seal; 16. Annular ring; 17. Protective mesh; 18. Fan; 19. Fan cover; 20. Support leg; 21. Air guide slope; 22. Air guide inlet; 23. Yoke mounting groove; 24. Air outlet gap. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Reference Figures 1 to 4 The present invention provides a technical solution: an axial magnetic yoke motor, including a housing 10, with end caps 14 on both sides of the housing 10. The edges of the housing 10 and the end caps 14 are detachably connected, that is, the edges of the housing 10 and the end caps 14 are connected by multiple bolts 9, which facilitates the assembly and disassembly of the housing 10 and the end caps 14.

[0023] like Figure 1 As shown, the outer casing 10 is provided with a rear magnetic yoke disk 3 and a front magnetic yoke disk 13. At the edges of the opposite surfaces of the two end caps 14, there are magnetic yoke mounting grooves 23, whose positions and sizes correspond to the rear magnetic yoke disk 3 and the front magnetic yoke disk 13, respectively. During installation, the rear magnetic yoke disk 3 and the front magnetic yoke disk 13 are respectively placed in the magnetic yoke mounting grooves 23 for positioning. An insulating pad 8 is also provided on the surface of the magnetic yoke mounting grooves 23. The coil 11 is set on the front magnetic yoke disk 13.

[0024] Next, a rotor disk 5 is located at the center of the outer casing 10. The rotor disk 5 is mounted on the shaft 6. A permanent magnet 4 is located on the outside of the rotor disk 5, and the position of the permanent magnet 4 corresponds to that of the coil 11. The two ends of the shaft 6 are rotatably mounted at the center of the end covers 14. Specifically, bearing grooves 2 are provided at the center of the opposite surfaces of the two end covers 14, and bearings 7 are installed in the bearing grooves 2. The shaft 6 is installed in the bearings 7, thus providing stable support for the shaft 6. Figure 1 and Figure 2 As shown, a sealing groove is also provided on the side of the two bearing grooves 2 that are far apart from each other, and a shaft seal 15 is provided inside the seal.

[0025] Furthermore, both ends of the shaft 6 extend outside the end cover 14. One end of the shaft 6 is used to connect to the load, and each end of the shaft 6 is equipped with a fan 18, which is located inside a fan cover 19. That is, a fan cover 19 is provided outside each fan 18. One end of the fan cover 19 is connected to the end cover 14. Specifically, multiple support legs 20 are provided on the edge of the fan cover 19. The support legs 20 are detachably connected to the end cover 14, specifically by bolting each support leg 20 to the end cover 14. An air outlet gap 24 is provided between the end cover 14 and the fan cover 19. When the shaft 6 rotates, the shaft 6 will drive the fan 18 to rotate, so the fan 18 will bring the external airflow into the fan cover 19, and then the airflow will flow out quickly from the air outlet gap 24.

[0026] Because the end cover 14 has a large area, most of the heat inside the motor is transferred to the outside through the end cover 14. Therefore, in order to allow airflow along the surface of the end cover 14, the end cover 14 is designed as follows: Figure 1 and Figure 2 As shown, a guide slope 21 is provided from the center of the end cover 14 to its edge, so that the cross-sectional view of the end cover 14 is roughly conical. In this way, when the airflow is about to exit from the air outlet gap 24, the provided guide slope 21 will guide the airflow from the air outlet gap 24 to the surface of the end cover 14, allowing the airflow to flow along the surface of the end cover.

[0027] like Figure 4 As shown, an air guide inlet 22 is provided inside the fan cover 19 on one side near the air guide slope 21. The air guide inlet 22 directs the airflow onto the air guide slope 21. The air guide inlet 22 is parallel to the air guide slope 21. Here, the air guide inlet 22 serves to guide the airflow, allowing the airflow to travel along the surface of the air guide slope 21 under the guidance of the air guide inlet 22. This allows the airflow flowing out from the air outlet gap 24 to flow across the entire surface of the end cover 14, thereby dissipating the heat from the surface of the end cover 14 and rapidly cooling the motor. The airflow direction is as follows: Figure 1 The middle arrow points to.

[0028] Furthermore, to prevent external objects from entering the fan shroud 19, an annular ring 16 is detachably provided at the end of the fan shroud 19 furthest from the end cover 14. A protective mesh 17 is installed inside the annular ring 16. The annular ring 16 is fastened to the fan shroud 19 with bolts. It should be noted that one end of the shaft 6 is connected to the load, such as... Figure 1 As shown, the length of one end of shaft 6 is relatively long, so the end of shaft 6 must pass through the center of the protective net 17.

[0029] Furthermore, in order to wire the coil, a mounting base 1 is provided at the bottom of the housing 10, and a junction box 12 connected to the coil 11 is provided on the side. The junction box 12 can be set at the top of the housing 10.

[0030] Based on the above embodiments, further optimization can be achieved by providing multiple heat dissipation fins on the surface of the end cover 14. The heat dissipation fins are arranged at equal intervals around the shaft 6 and distributed in a fan shape. The heat dissipation fins not only strengthen the end cover 14, but also form air channels between the heat dissipation fins, allowing airflow to pass quickly through the air channels.

[0031] Based on the above embodiments, it should be further explained that the magnetic yoke mounting groove 23 reduces the thickness of the end cover edge. Since the coil heat is first transferred to the rear magnetic yoke disk 3 and the front magnetic yoke disk 13, the magnetic yoke mounting groove 23 can accelerate the efficiency of heat transfer from the end cover edge to the outside.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An axial magnetic yoke motor, comprising a housing (10), a rear magnetic yoke disk (3) and a front magnetic yoke disk (13) inside the housing (10), a coil (11) on the front magnetic yoke disk (13), end caps (14) on both sides of the housing (10), a rotor disk (5) at the center of the housing (10), the rotor disk (5) being mounted on a shaft (6), and a permanent magnet (4) on the outside of the rotor disk (5), and both ends of the shaft (6) being rotatably mounted at the center of the end caps (14), characterized in that, Both ends of the shaft (6) extend to the outside of the end cap (14); It also includes fans (18) set at both ends of the shaft (6). The fans (18) are all located inside the fan cover (19). One end of the fan cover (19) is connected to the end cover (14), and there is an air outlet gap (24) between the end cover (14) and the fan cover (19). An air guide slope (21) is provided from the center of the end cap (14) outwards to its edge. The air guide slope (21) guides the airflow flowing out of the air outlet gap (24) to the surface of the end cap (14).

2. The axial magnetic yoke motor as described in claim 1, characterized in that, The edge of the hood (19) is provided with multiple support legs (20), and the support legs (20) are detachably connected to the end cap (14).

3. The axial magnetic yoke motor as described in claim 2, characterized in that, Inside the hood (19), on the side near the guide slope (21), there is a guide opening (22), which guides the airflow to the guide slope (21).

4. The axial magnetic yoke motor as described in claim 3, characterized in that, The end of the hood (19) away from the end cap (14) is detachably provided with an annular ring (16), and a protective net (17) is provided inside the annular ring (16).

5. The axial magnetic yoke motor as described in claim 1, characterized in that, The two end caps (14) are provided with magnetic yoke mounting grooves (23) at the edges of their opposite surfaces, which are respectively positioned and sized to correspond to the rear magnetic yoke disk (3) and the front magnetic yoke disk (13). The rear magnetic yoke disk (3) and the front magnetic yoke disk (13) are respectively placed in the magnetic yoke mounting grooves (23).

6. The axial magnetic yoke motor as described in claim 1, characterized in that, The edges of the outer casing (10) and the end cap (14) are detachably connected.

7. The axial magnetic yoke motor as described in claim 1, characterized in that, The two end caps (14) are respectively provided with bearing grooves (2) at the center of their opposite surfaces. Bearings (7) are provided in the bearing grooves (2), and the shaft (6) is installed in the bearings (7).

8. The axial magnetic yoke motor as described in claim 7, characterized in that, A sealing groove is provided on the side of the two bearing grooves (2) that are far apart from each other, and a shaft seal (15) is provided inside the seal.

9. The axial magnetic yoke motor as described in any one of claims 1-8, characterized in that, The bottom of the outer casing (10) is provided with a mounting base (1), and the side is provided with a junction box (12) connected to the coil (11).

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