Waterproof motor
By designing air hoods and spoiler components in waterproof motors, the problem of water vapor leakage in the prior art is solved, and a more efficient waterproof effect is achieved.
Patent Information
- Application Number
- CN202422136005.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-31
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-31
AI Technical Summary
When used, the existing dry and wet and dry waterproof motors have a gap between the sealing structure and the bearing, which leads to water vapor leakage, affecting the waterproof effect.
A waterproof motor is designed with air hood and spoiler components to reduce water vapor leakage. The air hood introduces dust and water vapor through negative pressure and is discharged through the blades of the driving impeller, while the spoiler assembly uses the spoiler bushing and spoiler end cap to scatter the unidirectional airflow, preventing water vapor from infiltration.
Through the design of the air hood and spoiler components, the leakage of water vapor is effectively reduced and the waterproof performance of the waterproof motor is improved.
Smart Images
Figure CN223039763U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wet and dry dual-purpose motors, and particularly to a waterproof motor. Background Art
[0002] Wet and dry dual-purpose waterproof motors generally have the heat dissipation effect of ordinary dry motors and the waterproof effect of ordinary wet motors. The motor housing uses a mechanical structure to achieve sealing to protect the drive structure inside the housing. To improve the waterproof effect of wet and dry dual-purpose motors, a sealing structure is generally provided at the gap between the fixed impeller and the shaft rod, and the sealing structure is used to reduce the leakage of water vapor into the drive structure.
[0003] However, when this type of motor is actually used, the sealing structure is installed inside the motor, and there is still a gap between the sealing structure and the bearing. Although the diameter of this gap is small, when the moving impeller of the motor rotates, the turbine inside the motor increases. At this time, a one-way air flow is formed in the direction of the fixed impeller between the moving impeller and the fixed impeller. The one-way air flow squeezes towards the gap between the fixed impeller and the shaft rod, resulting in the leakage of water vapor, so it needs to be improved. Summary of the Utility Model
[0004] In order to reduce the leakage of water vapor into the motor, this application provides a waterproof motor.
[0005] The waterproof motor provided by this application adopts the following technical solutions:
[0006] A waterproof motor includes a housing. A rotor is arranged inside the housing. One end of the rotor extends out of the housing and is connected to a moving impeller. A fixed impeller is also arranged on the housing. The fixed impeller is located between the housing and the moving impeller. A wind hood is sleeved outside the fixed impeller and the moving impeller. An air inlet is arranged at one end of the wind hood away from the housing. One end of the wind hood close to the housing is connected to the housing. A flow disturbing component is arranged between the moving impeller and the fixed impeller, and the flow disturbing component is used to disturb the one-way air flow.
[0007] By adopting the above technical solutions, when the waterproof motor operates, the moving impeller rotates synchronously with the rotor. Under the rotation of the moving impeller, a negative pressure is formed at the air inlet of the wind hood. Dust and water vapor enter the wind hood from the air inlet, are discharged around along the blades of the moving impeller, and move along the fixed impeller and are finally discharged from the air outlet. However, since a one-way air flow is formed when the moving impeller rotates, the side of the moving impeller close to the fixed impeller is under positive pressure. Therefore, some water vapor that has not been discharged from the air outlet is easily squeezed into the housing under the action of the positive-pressure one-way air flow. Therefore, a flow disturbing structure is arranged between the moving impeller and the housing to disperse the one-way air flow to reduce the penetration of water vapor into the housing.
[0008] Optionally, the spoiler assembly includes a spoiler bushing, which includes a connecting ring, a connecting plate, and a connecting ring. The connecting ring is fixed on the impeller. The inner wall of the connecting plate is connected to one end of the connecting ring close to the impeller. The bottom wall of the connecting ring is connected to the outer ring of the connecting plate. The connecting ring rotates synchronously with the impeller, and the connecting ring rotates to disperse the unidirectional air flow.
[0009] Optionally, a plurality of the connecting rings are arranged on the connecting plate. The diameters of the plurality of connecting rings are different and are arranged in sequence on the connecting plate. There is a gap between adjacent connecting rings, and a toothed shape is formed between the plurality of connecting rings and the connecting plate.
[0010] Optionally, the heights of the plurality of connecting rings in the axial direction are different, and the connecting
[0011] Optionally, the spoiler assembly further includes a spoiler end cover, which is connected to the housing. The spoiler end cover is adapted to the spoiler bushing, and teeth are provided on the spoiler end cover to be inserted into the gaps between adjacent connecting rings.
[0012] By adopting the above technical solution, a unidirectional air flow is formed during the rotation of the impeller. The unidirectional air flow is dispersed at the spoiler bushing and the spoiler end cover, and is blocked by the bending path formed by the spoiler bushing and the spoiler end cover to form a dynamic block.
[0013] Optionally, a chamfer position is formed between the connecting ring adjacent to the connecting ring and the connecting plate.
[0014] Optionally, waterproof grease is provided at the chamfer position to seal the gap between the spoiler bushing and the spoiler end cover at the chamfer position.
[0015] By adopting the above technical solution, if there is still some water vapor moving towards the housing through the bending path, it will finally be blocked outside the housing by the waterproof grease in a static blocking manner; the effect of reducing water vapor leakage into the motor is achieved.
[0016] Optionally, one end of the spoiler bushing close to the housing abuts against the bearing, and the other end abuts tightly against the impeller. An installation nut is provided on one side of the impeller close to the wind cover. The installation nut is screwed on one end of the rotor extending out of the housing to fix the spoiler bushing between the bearing and the impeller.
[0017] In summary, the present application includes at least one of the following beneficial technical effects:
[0018] 1. When the waterproof motor is operating, the moving impeller rotates synchronously with the rotor. Under the rotation of the moving impeller, a negative pressure is formed at the air inlet where the wind cover is located. Dust and water vapor enter the wind cover from the air inlet, are discharged around along the blades of the moving impeller, and move along the fixed impeller, and finally are discharged from the air outlet. However, since a unidirectional air flow is formed when the moving impeller rotates, the side of the moving impeller close to the fixed impeller is under positive pressure. Therefore, some water vapor that has not been discharged from the air outlet is easily squeezed into the interior of the machine shell under the action of the positive-pressure unidirectional air flow. Therefore, a flow disturbance structure is provided between the moving impeller and the machine shell to disperse the unidirectional air flow to reduce the penetration of water vapor into the machine shell;
[0019] 2. A unidirectional air flow is formed during the rotation of the moving impeller. This unidirectional air flow is dispersed at the flow disturbance bushing and the flow disturbance end cover, and is blocked by the bending path formed by the flow disturbance bushing and the flow disturbance end cover to form a dynamic block;
[0020] 3. If there is still some water vapor moving towards the machine shell through the bending path, it will finally be blocked outside the machine shell by the waterproof grease in a static blocking manner; achieving the effect of reducing the leakage of water vapor into the interior of the motor. Description of the Drawings
[0021] Figure 1 is a schematic structural diagram of the waterproof motor in the embodiment of the present application.
[0022] Figure 2 is a cross-sectional view for showing the internal structure of the waterproof motor in the embodiment of the present application.
[0023] Figure 3 is a cross-sectional view for showing the specific structure of the flow disturbance component in the embodiment of the present application.
[0024] Description of the reference numerals: 1, machine shell; 11, rotor; 2, moving impeller; 3, fixed impeller; 4, wind cover; 41, air inlet; 42, air outlet; 5, flow disturbance component; 51, flow disturbance bushing; 511, connecting ring; 512, connecting plate; 513, connecting loop; 52, flow disturbance end cover; 6, chamfer position. Detailed Embodiment
[0025] The following is a further detailed description of the present application in conjunction with the attached Figures 1-3 drawings.
[0026] The embodiment of the present application discloses a waterproof motor. Referring to Figure 1 and Figure 2 , the waterproof motor includes a machine shell 1, and a rotor 11 and a stator are installed in the machine shell 1. The rotor 11 is located at the axis position of the machine shell 1, and the stator is located outside the rotor 11; one end of the rotor 11 extends out of one end of the machine shell 1 to form a rotating shaft.
[0027] One end of the rotor 11 extending out of the casing 1 is provided with a moving impeller 2. The moving impeller 2 rotates synchronously with the rotor 11, and there is a gap between the moving impeller 2 and the outer wall of the casing 1. A fixed impeller 3 is arranged between the moving impeller 2 and the casing 1, and one end of the fixed impeller 3 is fixedly connected to the casing 1.
[0028] A wind hood 4 is sleeved outside the fixed impeller 3 and the moving impeller 2. One end of the wind hood 4 close to the casing 1 is connected to the casing 1. The end of the wind hood 4 far from the casing 1 is open to form an air inlet 41. There is a gap between the connection part of the wind hood 4 and the casing 1 and the casing 1 to form an air outlet 42. When the waterproof motor operates, the moving impeller 2 rotates synchronously with the rotor 11. Under the rotation of the moving impeller 2, a negative pressure is formed at the air inlet 41 where the wind hood 4 is located. Dust and water vapor enter the wind hood 4 from the air inlet 41, are discharged around along the blades of the moving impeller 2, and move along the fixed impeller 3, and finally are discharged from the air outlet 42. However, since a unidirectional air flow is formed when the moving impeller 2 rotates, the side of the moving impeller 2 close to the fixed impeller 3 is under positive pressure. Therefore, part of the water vapor that has not been discharged from the air outlet 42 is easily squeezed into the inside of the casing 1 under the action of the positive-pressure unidirectional air flow. Therefore, a structure needs to be arranged between the moving impeller 2 and the casing 1 to reduce the penetration of water vapor into the casing 1.
[0029] Refer to Figure 2 and Figure 3 A flow disturbing component 5 is arranged between the moving impeller 2 and the fixed impeller 3. The flow disturbing component 5 is used to disturb the unidirectional air flow. The flow disturbing component 5 includes a flow disturbing bushing 51 and a flow disturbing end cover 52. One end of the flow disturbing bushing 51 close to the casing 1 abuts against a bearing. The inner ring of this bearing is connected to the shaft rod of the rotor 11, and the other end abuts against one end of the moving impeller 2 close to the casing 1. The shaft rod of the rotor 11 passes through the flow disturbing bushing 51 and the moving impeller 2. An installation nut is arranged at the end of the moving impeller 2 far from the casing 1. The installation nut fixes the flow disturbing bushing 51 on the moving impeller 2 to rotate synchronously with the moving impeller 2.
[0030] The flow disturbing bushing 51 includes a connecting ring 511 and a connecting plate 512. The connecting ring 511 is fixed on the moving impeller 2. The inner wall of the connecting plate 512 is integrally formed with one end of the connecting ring 511 close to the moving impeller 2. In this embodiment, a number of connecting rings 513 are arranged on the connecting plate 512. The inner diameters of the number of connecting rings 513 are different and are arranged on the connecting plate 512 in sequence according to the inner diameter size. The virtual centers of the number of connecting rings 513 coincide with the virtual center of the connecting ring 511. In this embodiment, the connecting rings 513 are arranged as two. The heights of the two connecting rings 513 in the length direction of the shaft rod of the rotor 11 are different. The height of the connecting ring 513 located on the outer circle is higher than that of the connecting ring 513 located on the inner circle. There is a gap between adjacent connecting rings 513. The number of connecting rings 513 and the connecting plate 512 form a toothed shape.
[0031] The spoiler end cap 52 is integrally formed with the housing 1. The spoiler end cap 52 is adapted to the spoiler bushing 51. There are teeth on the spoiler end cap 52 to be inserted into the gaps between adjacent connecting rings 513. When the impeller 2 rotates, a unidirectional air flow is formed. This unidirectional air flow is dispersed at the spoiler bushing 51 and the spoiler end cap 52, and is blocked by the winding path formed by the spoiler bushing 51 and the spoiler end cap 52 to form a dynamic blockage.
[0032] A chamfer position 6 is formed between the connecting ring 513 adjacent to the connecting ring 511 and the connecting plate 512. Waterproof grease is provided at the chamfer position 6 to seal the gap between the spoiler bushing 51 and the spoiler end cap 52 at the chamfer position 6.
[0033] The implementation principle of a waterproof motor in an embodiment of the present application is as follows: When the waterproof motor operates, the impeller 2 rotates synchronously with the rotor 11. Under the rotation of the impeller 2, a negative pressure is formed at the air inlet 41 of the air hood 4. Dust and water vapor enter the air hood 4 from the air inlet 41, are discharged around along the blades of the impeller 2, and move along the fixed impeller 3, and finally are discharged from the air outlet 42. However, when the impeller 2 rotates, a unidirectional air flow is formed. The side of the impeller 2 close to the fixed impeller 3 is at positive pressure. A unidirectional air flow is formed during the rotation of the impeller 2. This unidirectional air flow is dispersed at the spoiler bushing 51 and the spoiler end cap 52, and is blocked by the winding path formed by the spoiler bushing 51 and the spoiler end cap 52; if there is still some water vapor moving towards the housing 1 through the winding path, it will finally be blocked outside the housing 1 by the waterproof grease in a static blocking manner; achieving the effect of reducing the leakage of water vapor into the motor interior.
[0034] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A waterproof motor, characterized in that: The invention comprises a casing (1), wherein a rotor (11) is arranged inside the casing (1), one end of the rotor (11) protrudes from the casing (1) and is connected to a moving impeller (2), and a fixed impeller (3) is also arranged on the casing (1), wherein the fixed impeller (3) is located between the casing (1) and the moving impeller (2), and a wind shield (4) is provided outside the fixed impeller (3) and the moving impeller (2); an air inlet (41) is provided at one end of the wind shield (4) away from the casing (1), and an end of the wind shield (4) close to the casing (1) is connected to the casing (1); a spoiler assembly (5) is provided between the moving impeller (2) and the fixed impeller (3), and the spoiler assembly (5) is used to disperse the unidirectional airflow.
2. A waterproof motor according to claim 1, characterized in that: The spoiler assembly (5) comprises a spoiler bushing (51), and the spoiler bushing (51) comprises a connecting ring (511), a connecting plate (512) and a connecting ring (513); the connecting ring (511) is fixed on the impeller (2); the inner wall of the connecting plate (512) is connected to an end of the connecting ring (511) close to the impeller (2); the bottom wall of the connecting ring (513) is connected to an outer ring of the connecting plate (512); the connecting ring (513) rotates synchronously with the impeller (2); and the connecting ring (513) rotates to disperse the unidirectional airflow.
3. A waterproof motor according to claim 2, characterized in that: A plurality of the connecting rings (513) are arranged on the connecting plate (512); the ring diameters of the plurality of connecting rings (513) are different and the connecting rings (513) are arranged in sequence on the connecting plate (512); gaps exist between adjacent connecting rings (513); and teeth are formed between the plurality of connecting rings (513) and the connecting plate (512).
4. A waterproof motor according to claim 2, characterized in that: The multiple connecting rings (513) have different axial heights, and the connecting ring (513) located on the outermost ring has the highest height.
5. A waterproof motor according to claim 3, characterized in that: The spoiler assembly (5) further comprises a spoiler end cover (52), the spoiler end cover (52) being connected to the housing (1), the spoiler end cover (52) being adapted to the spoiler bushing (51), and having teeth thereon for inserting into the gap between adjacent connecting rings (513).
6. A waterproof motor according to claim 5, characterized in that: A chamfered position (6) is formed between a connecting ring (513) adjacent to the connecting ring (511) and the connecting plate (512).
7. A waterproof motor according to claim 6, characterized in that: The chamfered position (6) is provided with waterproof grease, and the waterproof grease is used to seal the gap between the spoiler bushing (51) and the spoiler end cover (52) at the chamfered position (6).
8. The waterproof motor according to claim 2, characterized in that: One end of the spoiler bushing (51) close to the casing (1) abuts against the bearing, and the other end abuts against the impeller (2). A mounting nut is provided on one side of the impeller (2) close to the wind cover (4). The mounting nut is screwed on the end of the rotor (11) extending out of the casing (1) to fix the spoiler bushing (51) between the bearing and the impeller (2).