Reinforced water absorption aging motor
By designing the outer cover and dispersing parts structure in a wet and dry motor, the water vapor is sucked into the outer cover and discharged by the difference in negative and positive pressure, the problem of motor water vapor leakage is solved and the waterproof and water absorption aging is improved.
Patent Information
- Application Number
- CN202421642843.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-11
AI Technical Summary
During use, the existing wet and dry motors have water vapor leakage due to the gap between the sealing structure and the bearing, which affects its waterproofing effect.
A strengthened water absorption aging motor is designed, using a shell and dispersing member structure, through the difference in negative and positive pressures of the air inlet and outlet, gas and water vapor are sucked into the outer shell and discharged through the dispersing member, reducing water vapor into the inner shell.
It effectively improves the waterproof aging inside the motor and its own water absorption aging, extends the water absorption time, and reduces water vapor leakage.
Smart Images
Figure CN223007402U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wet and dry dual-purpose motors, and particularly to a motor with enhanced water absorption aging effect. Background Art
[0002] A wet and dry dual-purpose motor generally has the heat dissipation effect of an ordinary dry motor and the waterproof effect of an ordinary wet motor. The motor housing will be sealed using a mechanical structure to protect the drive structure inside the housing. To improve the waterproof effect of the wet and dry dual-purpose motor, a sealing structure is generally required to be provided at the gap between the fixed impeller and the shaft rod, and the water vapor leakage into the drive structure is reduced through the sealing structure.
[0003] However, when this type of motor is actually in use, 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, and at this time, a unidirectional air flow is formed in the direction of the fixed impeller between the moving impeller and the fixed impeller. The unidirectional air flow squeezes towards the gap between the fixed impeller and the shaft rod, thereby causing water vapor leakage, so it needs to be improved. Summary of the Utility Model
[0004] In order to improve the waterproof aging effect inside the motor and the water absorption aging effect of the motor itself, this application provides a motor with enhanced water absorption aging effect.
[0005] The motor with enhanced water absorption aging effect provided by this application adopts the following technical solutions:
[0006] A motor with enhanced water absorption aging effect includes an inner shell. A rotor is arranged inside the inner shell. One end of the rotor extends out of the inner shell and is provided with a moving impeller that rotates synchronously with the rotor. A fixed impeller is arranged between the moving impeller and the inner shell, and the fixed impeller is sleeved on the rotor; an outer cover is sleeved outside the fixed impeller and the moving impeller. The outer cover is connected to the inner shell through the fixed impeller. An air inlet is preset at one end of the outer cover away from the inner shell, and an air outlet is preset at one end of the outer cover close to the inner shell; a disturbing part is arranged between the moving impeller and the fixed impeller for disturbing the unidirectional air flow.
[0007] By adopting the above technical solution, when the motor is started, the rotor rotates to drive the impeller to rotate. After the impeller rotates, a negative pressure is generated at the air inlet. Gas and part of the water vapor are sucked into the outer cover from the air inlet, and are thrown out from the circumferential side of the impeller under the action of inertia. At this time, a positive pressure is formed on the side of the impeller facing away from the air inlet. The thrown-out gas and water vapor move between the blades of the fixed impeller to the air outlet under the action of the positive pressure and are discharged; at the same time, part of the gas and water vapor are squeezed towards the gap between the fixed impeller and the rotor due to the action of the unidirectional air flow. The unidirectional air flow is disturbed after contacting the dispersing member and is smoothly discharged from the air outlet; the dispersing member is used to disrupt the unidirectional air flow, reduce the water vapor entering the inner shell, thereby improving the waterproof time limit inside the motor, and realizing the water absorption time limit of the motor itself, and increasing the water absorption duration.
[0008] Optionally, the dispersing member is a dispersing tooth, and the dispersing tooth is sleeved and fixed on the rotor.
[0009] Optionally, the maximum diameter of the dispersing tooth is smaller than the riveting point of the impeller.
[0010] Optionally, there is a gap between the dispersing tooth and the impeller, and there is a gap between the dispersing tooth and the fixed impeller.
[0011] Optionally, a guiding arc surface is arranged on the inner ring of the end of the dispersing tooth close to the impeller.
[0012] Optionally, a return hole is opened on the inner shell, a return cover is sleeved on the outer cover, one end of the return cover close to the inner shell is connected to the outer shell, the other end of the return cover away from the inner shell is connected to the bottom wall of the outer cover, and there is a gap between the middle of the return cover and the outer cover to form a return steam channel. A drainage hole is opened at the bottom of the outer cover. The return hole is communicated with the drainage hole through the return steam channel, and the return steam channel is communicated with the air inlet through the drainage hole.
[0013] Optionally, a plurality of reinforcing ribs are arranged at the gap between the middle of the return cover and the outer cover, and the plurality of reinforcing ribs are arranged along the circumferential gap of the return cover.
[0014] Optionally, two of the reinforcing ribs are arranged on both sides of the drainage hole, and the two reinforcing ribs located on both sides of the drainage hole form the return steam channel.
[0015] By adopting the above technical solution, after part of the water vapor still enters the inner shell through the gap, under the action of the negative pressure at the air inlet, the water vapor in the inner shell is sucked out from the drainage hole, the return steam channel and the return hole, and enters the impeller again through the air inlet, and finally is discharged from the air outlet.
[0016] In summary, the present application includes at least one of the following beneficial technical effects:
[0017] 1. When the motor starts, the rotor rotates to drive the impeller to rotate. After the impeller rotates, a negative pressure is generated at the air inlet. Gas and some water vapor are sucked into the outer cover from the air inlet, and are thrown out from the circumferential side of the impeller under the action of inertia. At this time, a positive pressure is formed on the side of the impeller facing away from the air inlet. The thrown-out gas and water vapor move between the blades of the fixed impeller to the air outlet under the action of the positive pressure and are discharged; at the same time, some gas and water vapor are squeezed towards the gap between the fixed impeller and the rotor due to the action of the unidirectional air flow. The unidirectional air flow is disturbed after contacting the dispersing member and is smoothly discharged from the air outlet; the dispersing member is used to disrupt the unidirectional air flow, reduce the entry of water vapor into the inner shell, thereby improving the waterproof aging effect inside the motor and realizing the water absorption aging effect of the motor itself, and increasing the water absorption time.
[0018] 2. After some water vapor still enters the inner shell through the gap, under the action of the negative pressure at the air inlet, the water vapor in the inner shell is sucked out from the drainage hole, the return steam channel and the return hole, and enters the impeller again through the air inlet, and is finally discharged from the air outlet. Description of the Drawings
[0019] Figure 1 It is a schematic structural diagram of the motor with enhanced water absorption aging effect in the embodiment of the present application.
[0020] Figure 2 It is a cross-sectional view for showing the positional relationship among the dispersing member, the fixed impeller and the impeller in the embodiment of the present application.
[0021] Figure 3 It is Figure 2 The enlarged view of A in
[0022] Figure 4 It is a schematic structural diagram of the present application for showing the positional relationship between the reinforcing rib and the outer cover.
[0023] Description of the reference numerals: 1, inner shell; 11, rotor; 12, return hole; 2, impeller; 3, fixed impeller; 4, outer cover; 41, air inlet; 42, air outlet; 43, drainage hole; 5, dispersing teeth; 51, guiding arc surface; 6, return cover; 61, return steam channel; 62, reinforcing rib. Detailed Description of the Embodiment
[0024] The following will Figures 1-4 make a further detailed description of the present application in conjunction with the attached
[0025] The embodiment of the present application discloses a motor with enhanced water absorption aging effect. Refer to Figure 1 and Figure 2, The enhanced water absorption aging motor includes an inner shell 1. Inside the inner shell 1, a rotor 11 is provided. One end of the rotor 11 extends out of the inner shell 1 and is provided with a moving impeller 2. The moving impeller 2 is clamped at one end of the rotor 11 away from the inner shell 1, and the moving impeller 2 rotates synchronously with the rotor 11. A fixed impeller 3 is arranged between the moving impeller 2 and the inner shell 1. The fixed impeller 3 is sleeved on the rotor 11 and there is a gap between the fixed impeller 3 and the rotor 11. The inner side of the blades of the fixed impeller 3 is connected to the outer wall of the inner shell 1 to fix the position of the fixed impeller 3.
[0026] An outer cover 4 is sleeved outside the fixed impeller 3 and the moving impeller 2. The outer cover 4 is an annular structure with one end shrinking inward. The end of the outer cover 4 that shrinks inward is arranged at one end close to the moving impeller 2. There is a gap between the end of the outer cover 4 close to the moving impeller 2 and the outer ring of the blades of the moving impeller 2. The inner wall of the end of the outer cover 4 close to the inner shell 1 is connected to the outer ring of the blades of the fixed impeller 3. The opening at the end of the outer cover 4 close to the moving impeller 2 is a preset air inlet 41, and the opening at the end of the outer cover 4 close to the inner shell 1 is a preset air outlet 42.
[0027] A dispersing member is arranged between the moving impeller 2 and the fixed impeller 3. In this implementation scheme, the dispersing member is a dispersing tooth 5. The dispersing tooth 5 is clamped and sleeved and fixed on the rotor 11. There is a gap between the dispersing tooth 5 and the moving impeller 2, and there is a gap between the dispersing tooth 5 and the fixed impeller 3.
[0028] When the motor starts, the rotor 11 rotates to drive the moving impeller 2 to rotate. After the moving impeller 2 rotates, a negative pressure is generated at the air inlet 41. Gas and part of the water vapor are sucked into the outer cover 4 from the air inlet 41 and are thrown out from the circumferential side of the moving impeller 2 under the action of inertia. At this time, a positive pressure is formed on the side of the moving impeller 2 away from the air inlet 41. The gas and water vapor thrown out move from between the blades of the fixed impeller 3 to the air outlet 42 under the action of the positive pressure and are discharged. At the same time, part of the gas and water vapor are squeezed towards the gap between the fixed impeller 3 and the rotor 11 due to the action of the unidirectional air flow. The unidirectional air flow is dispersed after contacting the dispersing tooth 5 and is smoothly discharged from the air outlet 42.
[0029] Refer to Figure 2 and Figure 3 , In order to avoid the collision between the dispersing tooth 5 and the riveting point of the moving impeller 2 during the installation process, resulting in the deformation of the dispersing member; during the preliminary production, that is, control the maximum diameter size of the dispersing tooth 5 to be smaller than the riveting point of the moving impeller 2.
[0030] A guiding arc surface 51 is arranged on the inner ring of the end of the dispersing tooth 5 close to the moving impeller 2 to facilitate the installation of the dispersing member.
[0031] Refer to Figure 2 and Figure 4, a return hole 12 is formed in the inner shell 1. The return hole 12 connects the internal space of the inner shell 1 with the outside. A return cover 6 is sleeved on the outer cover 4, and at this time, the return hole 12 is sleeved inside the return cover 6. One end of the return cover 6 close to the inner shell 1 is connected to the inner shell 1, and the other end of the return cover 6 away from the inner shell 1 is connected to the bottom wall of the outer cover 4. There is a gap between the middle part of the return cover 6 and the outer cover 4. A number of reinforcing ribs 62 are arranged at the gap between the middle part of the return cover 6 and the outer cover 4. The number of reinforcing ribs 62 is arranged along the circumferential gap of the return cover 6, and the reinforcing ribs 62 are integrally formed on the outer wall of the outer cover 4; in this application, the number of reinforcing ribs 62 divides the gap between the return cover 6 and the outer cover 4 into several spaces.
[0032] The return hole 12 is located between two reinforcing ribs 62, and a return steam channel 61 is formed between the two reinforcing ribs 62. A drainage hole 43 is formed in the bottom of the outer cover 4, and the drainage hole 43 is located between the two reinforcing ribs 62; the return hole 12 is communicated with the drainage hole 43 through the return steam channel 61, and the return steam channel 61 is communicated with the air inlet 41 through the drainage hole 43. In this embodiment, a channel is arranged between the return hole 12 and the return steam channel 61 to prevent the return hole 12 and the return steam channel 61 from being communicated with the air outlet 42.
[0033] The implementation principle of an enhanced water absorption aging motor in this application embodiment is: when the motor is started, the rotor 11 rotates to drive the impeller 2 to rotate. After the impeller 2 rotates, a negative pressure is generated at the air inlet 41. Gas and part of the water vapor are sucked into the outer cover 4 from the air inlet 41 and are thrown out from the circumferential side of the impeller 2 under the action of inertia. At this time, a positive pressure is formed on the side of the impeller 2 facing away from the air inlet 41. The thrown gas and water vapor move from between the blades of the fixed impeller 3 to the air outlet 42 under the action of the positive pressure and are discharged; at the same time, part of the gas and water vapor are squeezed towards the gap between the fixed impeller 3 and the rotor 11 due to the action of the unidirectional air flow. The unidirectional air flow is disturbed after contacting the dispersing teeth 5 and is smoothly discharged from the air outlet 42;
[0034] Part of the water vapor still enters the inner shell 1 through the gap. Under the action of the negative pressure at the air inlet 41, the water vapor in the inner shell 1 is sucked out from the drainage hole 43, the return steam channel 61 and the return hole 12, enters the impeller 2 again through the air inlet 41, and is finally discharged from the air outlet 42; the dispersing teeth 5 are used to disrupt the unidirectional air flow to reduce the entry of water vapor into the inner shell 1. At the same time, the return hole 12 is used to reduce the influence of the water vapor infiltrating into the inner shell 1, thereby improving the waterproof aging inside the motor and realizing the water absorption aging of the motor itself, and increasing the water absorption duration.
[0035] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.
Claims
1. A motor with enhanced water absorption and aging, characterized in that: The invention comprises an inner shell (1), wherein a rotor (11) is arranged inside the inner shell (1), one end of the rotor (11) protrudes from the inner shell (1) and is provided with a moving impeller (2) which rotates synchronously with the rotor (11), a fixed impeller (3) is arranged between the moving impeller (2) and the inner shell (1), and the fixed impeller (3) is sleeved on the rotor (11); an outer cover (4) is sleeved outside the fixed impeller (3) and the moving impeller (2), and the outer cover (4) is connected to the inner shell (1) through the fixed impeller (3), an air inlet (41) is preset at one end of the outer cover (4) away from the inner shell (1), and an air outlet (42) is preset at one end of the outer cover (4) close to the inner shell (1); a dispersing member is arranged between the moving impeller (2) and the fixed impeller (3) for dispersing the unidirectional airflow.
2. The enhanced water absorption aging motor according to claim 1, characterized in that: The disrupting member is a disrupting tooth (5), and the disrupting tooth (5) is sleeved and fixed on the rotor (11).
3. The enhanced water absorption aging motor according to claim 2, characterized in that: The maximum diameter of the disrupting tooth (5) is smaller than the riveting point of the impeller (2).
4. The enhanced water absorption aging motor according to claim 2, characterized in that: There is a gap between the disrupting tooth (5) and the moving impeller (2), and there is a gap between the disrupting tooth (5) and the fixed impeller (3).
5. The enhanced water absorption aging motor according to claim 2, characterized in that: The inner ring of the disrupting tooth (5) close to one end of the impeller (2) is provided with a guide cambered surface (51).
6. The enhanced water absorption aging motor according to claim 1, characterized in that: The inner shell (1) is provided with a return hole (12), and the outer cover (4) is provided with a return cover (6); the end of the return cover (6) close to the inner shell (1) is connected to the inner shell (1), and the end of the return cover (6) away from the inner shell (1) is connected to the bottom wall of the outer cover (4); there is a gap between the middle of the return cover (6) and the outer cover (4) to form a return steam channel (61); a drainage hole (43) is provided at the bottom of the outer cover (4); the return hole (12) is connected to the drainage hole (43) through the return steam channel (61), and the return steam channel (61) is connected to the air inlet (41) through the drainage hole (43).
7. The enhanced water absorption aging motor according to claim 6, characterized in that: A plurality of reinforcing ribs (62) are arranged at the gap between the middle portion of the return cover (6) and the outer cover (4), and the plurality of reinforcing ribs (62) are arranged along the circumferential gap of the return cover (6).
8. The enhanced water absorption aging motor according to claim 7, characterized in that: The two reinforcing ribs (62) are arranged on both sides of the drainage hole (43), and the two reinforcing ribs (62) located on both sides of the drainage hole (43) form the return steam channel (61).