Permanent magnet motor with waterproof structure
By incorporating a combination of a water-absorbing sponge layer, an impeller ring, and a heat dissipation mechanism into the permanent magnet motor, the problems of inadequate sealing and insufficient heat dissipation in the waterproof structure are solved, achieving efficient waterproofing and heat dissipation, and extending the service life of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-17
AI Technical Summary
Existing waterproof permanent magnet motors have poor sealing at the joints, making it easy for water to accumulate inside and limiting heat dissipation. This makes it difficult to effectively remove moisture, resulting in decreased motor performance and shortened service life.
It adopts a combination design of water-absorbing sponge layer, impeller ring structure and heat dissipation mechanism, and uses the rotation power of motor to generate directional airflow for dynamic purging. Combined with honeycomb heat dissipation holes and openable sealing plate, it achieves dynamic sealing and efficient heat dissipation.
It effectively prevents moisture from seeping through the joints, improves waterproof performance and heat dissipation, extends the service life of the motor, and reduces maintenance costs.
Smart Images
Figure CN224006561U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of permanent magnet motor technology, and in particular to a permanent magnet motor with a waterproof structure. Background Technology
[0002] In the wave of modern industry and automation technology, permanent magnet motors have shown broad application prospects in many fields due to their high efficiency, small size, light weight and low energy consumption. In particular, waterproof permanent magnet motors are indispensable key equipment in underwater operations, humid environments and outdoor open-air places. However, the waterproof permanent magnet motors on the market are not perfect. Some shortcomings and drawbacks exposed in their practical applications need to be solved through technological innovation and structural improvement.
[0003] Permanent magnet motors are typically assembled from multiple components, and the seams between these components become the main pathways for moisture penetration. Existing sealing methods, such as using rubber gaskets or sealants, can block moisture to some extent, but they are prone to aging and cracking after long-term operation, leading to a decline in sealing performance. Secondly, even with proper external waterproofing measures, existing permanent magnet motors may still accumulate water inside. This water not only increases the humidity inside the motor but may also come into direct contact with electrical components, causing short circuits or a decline in insulation performance. This makes it difficult to effectively remove moisture once it enters the motor. At the same time, excessively high internal temperatures not only reduce motor efficiency but may also accelerate the aging of insulation materials, shortening the motor's lifespan. Utility Model Content
[0004] This invention proposes a permanent magnet motor with a waterproof structure, which solves the problems of poor sealing of the joints, difficulty in removing internal water, and limited heat dissipation performance in existing permanent magnet motors with waterproof structures.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A permanent magnet motor with a waterproof structure includes a base plate, a permanent magnet motor body disposed on the base plate, an absorbent sponge layer disposed inside the permanent magnet motor body, a mounting frame disposed inside the absorbent sponge layer, and multiple sets of through slots disposed inside the mounting frame, a cover plate disposed on one side of the permanent magnet motor body, and a rotating shaft disposed in the middle of the cover plate inside the permanent magnet motor body, a drainage mechanism disposed on the outside of the rotating shaft, and a heat dissipation ring disposed on the other side of the permanent magnet motor body, the heat dissipation ring having honeycomb-shaped heat dissipation holes disposed inside, a waterproof box fitted on the outside of the permanent magnet motor body, a mounting groove disposed on the side of the waterproof box, a heat dissipation mechanism disposed inside the mounting groove, and an openable and closable sealing plate disposed on the side of the waterproof box.
[0007] Preferably, the permanent magnet motor body has a support frame at its bottom, and the support frame has mounting holes on both sides. The support frame is connected to the top of the base plate by bolts to the mounting holes.
[0008] Preferably, the outer side of the permanent magnet motor body is provided with multiple sets of through holes, and the through holes are connected to the water-absorbing sponge layer, and the side of the through groove inside the mounting frame is provided with multiple sets of guide grooves.
[0009] Preferably, a mounting base is provided in the middle of the cover plate, and a sealing ring matching the rotating shaft is provided inside the mounting base.
[0010] Preferably, the drainage mechanism includes a first frame plate, a first impeller ring, a second frame plate, and a second impeller ring, and the first frame plate is provided inside the cover plate, and the first impeller ring is provided on the side of the first frame plate located outside the rotating shaft.
[0011] Preferably, the other end of the permanent magnet motor body has a second frame plate located on the side of the heat dissipation ring, and the second frame plate has a second impeller ring with reverse blades located on the outside of the rotating shaft to form a drainage structure.
[0012] Preferably, the heat dissipation ring has a waterproof and breathable layer on its side, and the bottom plate has a snap-fit groove on its top that matches the waterproof box for a movable snap-fit.
[0013] Preferably, the heat dissipation mechanism includes an air inlet, an exhaust outlet, an intake fan, an exhaust fan, and a protective net. An air inlet and an exhaust outlet are respectively provided on both sides inside the mounting groove. An intake fan and an exhaust fan are respectively provided inside the air inlet and the exhaust outlet, and a protective net is provided on the outside of the intake fan and the exhaust fan.
[0014] Preferably, a sealing gasket is provided on the outer side of the protective net inside the mounting groove, and a humidity sensor is provided in the middle of the air inlet and the exhaust outlet.
[0015] Preferably, the waterproof box and the mounting groove are provided with a sliding groove that matches the sealing plate, and the side of the sliding groove is provided with a slide rail inside the waterproof box. The side of the sealing plate is provided with a rack inside the slide rail, and the side of the slide rail is provided with a drive motor. The output end of the drive motor is connected to a drive gear, and the drive gear is meshed with the rack.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This permanent magnet motor with a waterproof structure has a drainage mechanism on the outside of the rotating shaft. A first impeller ring is located on the side of the first frame plate on the outside of the rotating shaft, and a second impeller ring with reverse blades is located on the side of the second frame plate on the outside of the rotating shaft. The impeller ring structure is introduced into the main body of the permanent magnet motor. This structure is driven by the rotational power of the motor itself to generate a directional airflow. This airflow is cleverly guided to the joint of the motor body to form a dynamic blowing effect, which effectively prevents moisture from penetrating through the joint. At the same time, the second impeller ring with reverse blades can blow the airflow out from the honeycomb heat dissipation holes, which can effectively improve the waterproof performance. This design not only utilizes the energy of the motor itself without additional energy consumption, but also has stronger adaptability than static sealing, and can maintain a stable waterproof effect under different environmental conditions.
[0018] 2. The permanent magnet motor body has an internal water-absorbing sponge layer, and the mounting frame has multiple sets of through slots. The water-absorbing sponge inside the layer has good moisture absorption and a certain degree of temperature resistance, which can effectively absorb and store moisture. The reasonable layout of the mounting frame inside the water-absorbing sponge layer allows the water-absorbing sponge to be naturally dried through the through slots using the heat generated by the motor during operation. This not only reduces the risk of moisture retention but also avoids the additional energy consumption and complexity caused by external heating equipment. At the same time, the replacement of the water-absorbing sponge is relatively simple, reducing maintenance costs. Furthermore, the permanent magnet motor body has multiple sets of through holes on its outer side. Through the design of the through holes, moisture can be quickly discharged from the motor, thereby greatly improving the motor's waterproof performance.
[0019] 3. The mounting slot is equipped with a heat dissipation mechanism, with an intake fan and an exhaust fan installed inside the air inlet and exhaust outlet respectively. The reasonable ventilation design makes the airflow smoother and improves the heat dissipation effect. At the same time, the waterproof box also plays a certain role in waterproofing. In addition, the waterproof box has an openable and closable sealing plate on the side. The sealing plate is driven by a rack, a drive gear and a drive motor to move inside the sliding groove. When the permanent magnet motor is immersed in water, the humidity sensor sends a command and the sealing plate closes quickly, extending the service life of the permanent magnet motor body. The use of sealing gaskets further improves the overall sealing and waterproof performance of the structure. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a schematic diagram of the main structure of the permanent magnet motor of this utility model.
[0022] Figure 3 This is a schematic diagram of the exploded structure of this utility model.
[0023] Figure 4 This is a schematic diagram of the drainage mechanism of this utility model.
[0024] Figure 5 This is a schematic diagram of the waterproof box structure of this utility model.
[0025] Figure 6 This is a schematic diagram of the connection between the slide rail and the drive motor of this utility model.
[0026] Figure 7 This is a schematic diagram of the sealing plate structure of this utility model.
[0027] The diagram shows the following components: 1. Base plate; 2. Permanent magnet motor body; 3. Absorbent sponge layer; 4. Mounting frame; 5. Cover plate; 6. Shaft; 7. Heat dissipation ring; 8. Heat dissipation hole; 9. Waterproof box; 10. Mounting groove; 11. Sealing plate; 12. Support frame; 13. Mounting hole; 14. Bolt; 15. Guide groove; 16. Mounting seat; 17. First frame plate; 18. First impeller ring; 19. Second frame plate; 20. Second impeller ring; 21. Waterproof and breathable layer; 22. Snap-fit groove; 23. Air inlet; 24. Exhaust outlet; 25. Inlet fan; 26. Exhaust fan; 27. Protective net; 28. Sealing gasket; 29. Humidity sensor; 30. Slide groove; 31. Slide track; 32. Rack; 33. Drive motor; 34. Drive gear; 35. Through hole; 36. Sealing ring; 37. Through groove. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Reference Figures 1-7 This utility model provides a technical solution: a permanent magnet motor with a waterproof structure, including a base plate 1, a permanent magnet motor body 2 arranged on the top of the base plate 1, and a water-absorbing sponge layer 3 arranged inside the permanent magnet motor body 2. A mounting frame 4 is arranged inside the water-absorbing sponge layer 3, and multiple sets of through grooves 37 are arranged inside the mounting frame 4. A cover plate 5 is arranged on the side of one end of the permanent magnet motor body 2, and a rotating shaft 6 is arranged in the middle of the cover plate 5 inside the permanent magnet motor body 2. A drainage mechanism is arranged on the outside of the rotating shaft 6. A heat dissipation ring 7 is arranged on the side of the other end of the permanent magnet motor body 2. A honeycomb-shaped heat dissipation hole 8 is arranged inside the heat dissipation ring 7. A waterproof box 9 is fitted on the outside of the permanent magnet motor body 2. A mounting groove 10 is arranged on the side of the waterproof box 9, and a heat dissipation mechanism is arranged inside the mounting groove 10. An openable and closable sealing plate 11 is arranged on the side of the waterproof box 9.
[0030] Reference Figure 3 , Figure 4The permanent magnet motor body 2 has multiple sets of through holes 35 on its outer side, and the through holes 35 are connected to the water-absorbing sponge layer 3. The mounting frame 4 has multiple sets of guide grooves 15 on its inner side through groove 37. The cover plate 5 has a mounting seat 16 in the middle, and the mounting seat 16 has a sealing ring 36 that matches the rotating shaft 6 inside.
[0031] Reference Figure 2 , Figure 3 The drainage mechanism includes a first frame plate 17, a first impeller ring 18, a second frame plate 19, and a second impeller ring 20. The first frame plate 17 is installed inside the cover plate 5. The first impeller ring 18 is installed on the side of the first frame plate 17 outside the rotating shaft 6. The second frame plate 19 is installed inside the permanent magnet motor body 2 on the side of the heat dissipation ring 7. The second impeller ring 20 with reverse blades is installed on the side of the second frame plate 19 outside the rotating shaft 6 to form a drainage structure. The side of the heat dissipation ring 7 is provided with a waterproof and breathable layer 21. The top of the bottom plate 1 is provided with a snap-fit groove 22 that matches the waterproof box 9 and is in a movable snap-fit configuration.
[0032] In practical implementation, when a permanent magnet motor with a waterproof structure is in use, and moisture enters the interior of the permanent magnet motor body 2 through the connecting gap, firstly, the first impeller ring 18 and the second impeller ring 20 are driven by the rotational power of the permanent magnet motor itself, causing the rotating shaft 6 to drive the first impeller ring 18 and the second impeller ring 20 at both ends to rotate, thereby forming a directional airflow. This airflow is cleverly guided to the connecting gap of the permanent magnet motor body 2, forming a dynamic blowing effect, effectively preventing moisture from penetrating through the connecting gap. At the same time, the second impeller ring 20 forms a reverse airflow, blowing the airflow out from the inside of the honeycomb-shaped heat dissipation holes 8, improving the heat dissipation performance and preventing moisture from accumulating inside the heat dissipation holes 8. In this way, the waterproof performance and heat dissipation performance of the motor are greatly improved through the above operations.
[0033] When a water accumulation area forms inside the permanent magnet motor body 2, the water can flow into the through groove 37 through the guide groove 15. Since the through groove 37 is connected to the water-absorbing sponge layer 3, the water-absorbing sponge layer 3 can fully absorb the water. In addition, since the permanent magnet motor generates a lot of heat when it runs, the heat is naturally dried through the through groove 37. This not only reduces the risk of water retention, but also avoids the extra energy consumption and complexity caused by external heating equipment. At the same time, since the through hole 35 is also connected to the water-absorbing sponge layer 3, the water inside the water-absorbing sponge layer 3 can also be quickly discharged to the outside of the motor through the through hole 35. Through the above operations, the waterproof performance of the permanent magnet motor is further improved.
[0034] Reference Figure 3 , Figure 5The permanent magnet motor body 2 has a support frame 12 at the bottom, and mounting holes 13 are provided on both sides of the support frame 12. The support frame 12 is connected to the top of the base plate 1 by bolts 14 and mounting holes 13. The heat dissipation mechanism includes an air inlet 23, an exhaust outlet 24, an air intake fan 25, an exhaust fan 26, and a protective net 27. An air inlet 23 and an exhaust outlet 24 are respectively provided on both sides inside the mounting groove 10. An air intake fan 25 and an exhaust fan 26 are respectively provided inside the air inlet 23 and the exhaust outlet 24. A protective net 27 is provided on the outside of the air intake fan 25 and the exhaust fan 26. A sealing gasket 28 is provided on the outside of the protective net 27 inside the mounting groove 10. A humidity sensor 29 is provided in the middle of the air inlet 23 and the exhaust outlet 24.
[0035] Reference Figure 6 , Figure 7 The waterproof box 9 and the mounting groove 10 are provided with a sliding groove 30 that matches the sealing plate 11. The sliding groove 30 is provided with a slide 31 on the side inside the waterproof box 9. The sealing plate 11 is provided with a rack 32 on the side inside the slide 31. The slide 31 is provided with a drive motor 33 on the side. The output end of the drive motor 33 is connected to a drive gear 34, and the drive gear 34 is meshed with the rack 32.
[0036] In practice, after a permanent magnet motor with a waterproof structure is cleaned and immersed in water, the humidity sensor 29 receives a signal and sends a command to start the drive motor 33. The drive motor 33 drives the meshing rack 32 through the active gear 34, which enables the sealing plate 11 to move up and down inside the slide groove 30, quickly closing the air inlet 23 and the exhaust outlet 24. Together with the inner sealing gasket 28, this effectively isolates moisture. Conversely, it can be opened. When the waterproof box 9 needs heat dissipation, the intake fan 25 and the exhaust fan 26 are started. The intake fan 25 draws air into the waterproof box 9 through the intake port 23, and the exhaust fan 26 exhausts the hot air through the exhaust port 24. Through the above operations, the air circulation is smoother, the heat dissipation effect is improved, and the waterproof performance is further improved, extending the service life of the permanent magnet motor.
[0037] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A permanent magnet motor with a waterproof structure, comprising a bottom plate (1), characterized in that, The bottom plate (1) is provided with a permanent magnet motor body (2), and the permanent magnet motor body (2) is internally provided with a water absorbing sponge layer (3), the water absorbing sponge layer (3) is internally provided with a mounting frame (4), and the mounting frame (4) is internally provided with a plurality of groups of through grooves (37), one end of the permanent magnet motor body (2) side is provided with a cover plate (5), and the cover plate (5) is internally provided with a rotating shaft (6) in the permanent magnet motor body (2), the rotating shaft (6) is provided with a drainage mechanism outside, and the other end of the permanent magnet motor body (2) side is provided with a heat dissipation ring (7), the heat dissipation ring (7) is internally provided with a honeycomb heat dissipation hole (8), and the permanent magnet motor body (2) is externally provided with a waterproof box (9), the waterproof box (9) is provided with a mounting groove (10) on the side, and the mounting groove (10) is internally provided with a heat dissipation mechanism, the waterproof box (9) is provided with a sealable sealing plate (11) on the side.
2. The water-proof permanent magnet motor of claim 1, wherein, The bottom of the permanent magnet motor body (2) is provided with a support frame (12), and the support frame (12) is provided with mounting holes (13) on both sides, and the support frame (12) is connected to the top of the bottom plate (1) through bolts (14).
3. The water-proof permanent magnet motor of claim 1, wherein, The outer side of the permanent magnet motor body (2) is provided with a plurality of groups of through holes (35), and the through holes (35) are connected to the water absorbing sponge layer (3), and the mounting frame (4) is internally provided with a plurality of groups of flow guide grooves (15) on the side of the through groove (37).
4. The water-proof permanent magnet motor of claim 1, wherein, The cover plate (5) is provided with a mounting seat (16) in the middle, and the mounting seat (16) is internally provided with a sealing ring (36) matched with the rotating shaft (6).
5. The water-proof permanent magnet motor of claim 1, wherein, The drainage mechanism comprises a first frame plate (17), a first impeller ring (18), a second frame plate (19), a second impeller ring (20), and the cover plate (5) is internally provided with a first frame plate (17), and the first frame plate (17) is provided with a first impeller ring (18) outside the rotating shaft (6) on the side.
6. The water-proof permanent magnet motor of claim 5, wherein, The other end of the permanent magnet motor body (2) is internally provided with a second frame plate (19) on the side of the heat dissipation ring (7), and the second frame plate (19) is provided with a second impeller ring (20) with reverse blades outside the rotating shaft (6) on the side to constitute a drainage structure.
7. The water-proof permanent magnet motor of claim 1, wherein, The side of the heat dissipation ring (7) is provided with a waterproof and breathable layer (21), and the top of the bottom plate (1) is provided with a clamping groove (22) matched with the waterproof box (9) in a movable clamping manner.
8. The water-proof permanent magnet motor of claim 1, wherein, The heat dissipation mechanism comprises an air inlet (23), an air outlet (24), an air inlet fan (25), an air outlet fan (26), and a protective net (27), and the mounting groove (10) is internally provided with an air inlet (23) and an air outlet (24) on both sides, respectively, and the air inlet (23) and the air outlet (24) are internally provided with an air inlet fan (25) and an air outlet fan (26), respectively, and the air inlet fan (25) and the air outlet fan (26) are externally provided with a protective net (27).
9. The water-proof permanent magnet motor of claim 8, wherein, The outer side of the protective net (27) is internally provided with a sealing gasket (28) in the mounting groove (10), and the middle of the air inlet (23) and the air outlet (24) is provided with a humidity sensor (29).
10. The water-proof permanent magnet motor of claim 1, wherein, The waterproof box (9) and the installation groove (10) inside are provided with the sliding groove (30) matched with the sealing plate (11), and the sliding groove (30) side is located in the waterproof box (9) inside and is provided with the slide (31), the sealing plate (11) side is located in the slide (31) inside and is provided with the rack (32), and the slide (31) side is provided with the driving motor (33), the driving motor (33) output end is connected with the driving gear (34), and the driving gear (34) is engaged with the rack (32) connection.