Submersible pump motor with good heat dissipation structure
By setting up blade groups and multiple heat dissipation slots in the submersible pump motor, multi-level and multi-directional air circulation and water cooling are achieved, solving the problem of motor heat dissipation difficulties and improving the motor's heat dissipation performance and operating efficiency.
Patent Information
- Application Number
- CN202520253874.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Submersible pump motors have difficulty dissipating heat when operating at high power, leading to reduced efficiency and friction damage to the stator and rotor.
Blade groups and multiple heat dissipation slots are set in the stator and rotor assemblies of the submersible pump motor to form multi-level, multi-directional air circulation and water cooling circulation, thereby improving heat dissipation performance.
It effectively removes heat from the motor during operation, ensuring long-term efficient operation and preventing friction damage.
Smart Images
Figure CN223744524U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to submersible pump technical field, concretely relates to a submersible pump motor with good heat radiation structure. BACKGROUND
[0002] Submersible pump is widely used in flood control and drainage, water supply and drainage, irrigation, road and water conservancy and other fields in municipal engineering due to electromechanical integrated design, compact structure, convenient and reliable use. With the acceleration of urbanization process and the demand of energy saving and consumption reduction, the submersible pump motor develops towards high power and high efficiency. With the continuous increase of motor power, the heat generation of motor increases, which makes the motor difficult to dissipate heat, reduces the efficiency of motor on the one hand, and causes the damage of motor due to the friction between stator and rotor on the other hand. SUMMARY
[0003] Technical problem: the utility model wants to solve technical problem: provide a submersible pump motor with good heat radiation structure, can make the heat generated by motor in operation multilevel, multidirectional and be taken away in time, form wind circulation heat dissipation in motor cavity, and then carry out water cooling circulation to hot air, effectively improve the heat dissipation performance of motor, and ensure long-term efficient operation of motor.
[0004] Technical scheme: in order to solve the above technical problem, the utility model embodiment adopts the technical scheme that:
[0005] A submersible pump motor with good heat radiation structure, comprising a stator assembly and a rotor assembly, the rotor assembly is arranged in the stator assembly, and the rotor assembly and the stator assembly are gap matched, the stator assembly comprises a casing, a stator winding, a stator core, an upper bearing seat and a lower bearing seat, the stator winding is arranged in the casing, the stator core is arranged on the inner wall of the casing, and the stator winding is connected with the stator core, the upper bearing seat is arranged on the upper part of the casing, and the lower bearing seat is arranged on the lower part of the casing, the space on the upper part of the stator core forms a first heat dissipation chamber, and the space on the lower part of the stator core forms a second heat dissipation chamber, the rotor assembly comprises a rotor shaft, a spoke and a rotor core, the rotor shaft is arranged in the casing, the spoke is arranged on the surface of the rotor shaft, and the rotor core is arranged on the outer circle of the spoke, and the surface of the spoke is provided with a blade group.
[0006] As a preferred example, the blade group comprises first blades and second blades, the first blades are arranged on the upper part of the spoke, and the second blades are arranged on the lower part of the spoke, the first blades are arranged downwardly, and the second blades are arranged upwardly.
[0007] As a preferred example, the spoke is uniformly arranged on the rotor shaft in the circumferential direction, and at least six spokes are arranged, and a reflux hole is arranged on each spoke.
[0008] As a preferred example, the rotor core is provided with a first pad strip in the middle; the first pad strip is horizontally spaced along the circumferential direction; the number of the first pad strip is N, N≥3.
[0009] As a preferred example, the outer wall of the rotor core is provided with a first heat dissipation groove; the first heat dissipation groove is vertically spaced along the circumferential direction; the first heat dissipation groove is an arc-shaped groove; the number of the first heat dissipation groove is M, M≥5.
[0010] As a preferred example, the stator core is provided with a second pad strip in the middle; the second pad strip is horizontally spaced along the circumferential direction; the number of the second pad strip is equal to that of the first pad strip; the height of the second pad strip is equal to that of the first pad strip; each second pad strip is located on the same horizontal line as the first pad strip.
[0011] As a preferred example, the outer wall of the stator core is provided with a second heat dissipation groove; the second heat dissipation groove is vertically spaced along the circumferential direction; the second heat dissipation groove is a rectangular groove; the number of the second heat dissipation groove is Q, Q≥5.
[0012] As a preferred example, the area of the first heat dissipation groove is 0.1-0.4 times the cross-sectional area of the second heat dissipation groove.
[0013] As a preferred example, the inner wall of the casing is provided with a third heat dissipation groove arranged at intervals; the third heat dissipation groove is a horizontal annular groove; the horizontal symmetry line of the third heat dissipation groove is at the same height as the horizontal line symmetry line of the first heat dissipation groove and the second heat dissipation groove; and the height of the third heat dissipation groove is greater than the height of the first heat dissipation groove and the second heat dissipation groove.
[0014] Beneficial effects: Compared with the prior art, the technical scheme of the utility model has the following beneficial effects: the utility model discloses a technical scheme which sets a blade group on the spoke, and sets a plurality of heat dissipation grooves in the interior and around the stator core and the rotor core, so that when the motor is running, the blade group forms an air fluid inside the casing, and the air fluid can form a circulation inside through the plurality of heat dissipation grooves, so as to achieve the purpose of heat dissipation. Since the heat dissipation grooves are provided with a plurality of different directions, the heat generated when the motor is running can be taken away in multiple levels and multiple directions, forming a wind circulation heat dissipation in the motor cavity, and the hot air can also be cooled by water circulation, effectively improving the heat dissipation performance of the motor and ensuring long-term efficient operation of the motor. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a structural schematic diagram of an embodiment of the utility model;
[0016] Figure 2 is a sectional schematic diagram of an embodiment of the utility model.
[0017] The diagram includes: housing 1, rotor shaft 2, stator winding 3, spokes 4, rotor core 5, stator core 6, first heat dissipation chamber 7, first pad 8, second pad 9, second heat dissipation chamber 10, third heat dissipation groove 11, blade group 41, return hole 42, first blade 411, second blade 412, first heat dissipation groove 51, and second heat dissipation groove 61. Detailed Implementation
[0018] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings.
[0019] like Figure 1 As shown in the figure, a submersible pump motor with a good heat dissipation structure according to an embodiment of the present invention includes a stator assembly and a rotor assembly; the rotor assembly is disposed inside the stator assembly, and the rotor assembly and the stator assembly are clearance-fitted; the stator assembly includes a housing 1, a stator winding 3, a stator core 6, an upper bearing seat, and a lower bearing seat; the stator winding 3 is disposed inside the housing 1; the stator core 6 is disposed on the inner wall of the housing 1, and the stator winding 3 is connected to the stator core 6; the upper bearing seat is disposed on the upper part of the housing 1, and the lower bearing seat is disposed on the lower part of the housing 1; the upper space of the stator core 6 forms a first heat dissipation chamber 7, and the lower space of the stator core 6 forms a second heat dissipation chamber 10; the rotor assembly includes a rotor shaft 2, spokes 4, and a rotor core 5; the rotor shaft 2 is disposed inside the housing 1, the spokes 4 are disposed on the surface of the rotor shaft 2, and the rotor core 5 is disposed on the outer ring of the spokes 4; the surface of the spokes 4 is provided with blade groups 41.
[0020] In the submersible pump motor with a good heat dissipation structure described above, firstly, blade groups 41 are arranged on the spokes 4, so that when the motor is running, the spokes 4 drive the blade groups 41 to rotate, generating airflow to dissipate heat and cool the internal components. Secondly, multiple heat dissipation grooves are arranged inside and around the stator core and rotor core, so that when the motor is running, the airflow generated by the blade groups 41 inside the casing can circulate internally through multiple heat dissipation grooves, thereby achieving the purpose of dissipating heat from the entire motor. Furthermore, since there are multiple heat dissipation grooves in different directions, the heat generated by the motor can be carried away in multiple layers and directions. While creating airflow for heat dissipation within the motor cavity, the hot air can also be cooled by water circulation, effectively improving the motor's heat dissipation performance and ensuring long-term efficient operation.
[0021] The method for heat dissipation inside the motor in this solution is as follows:
[0022] After the motor starts running, the spokes 4 rotate, driving the blade assembly 41 to rotate synchronously. This causes the heat in the rotor core 5 to move rapidly upwards or downwards into the horizontal heat dissipation slots inside the rotor. The high-speed rotating first pad 8 acts as a blade inside the rotor core, throwing the heat in the horizontal heat dissipation slots outwards, thereby accelerating the upward and downward dissipation of internal heat. A small portion of the heat in the rotor core 5 enters the vertical first heat dissipation slot 51 from the horizontal heat dissipation slots, and then moves vertically upwards and downwards from the first heat dissipation slot 51 for air cooling. This allows fluid to enter the first heat dissipation chamber 7 and the second heat dissipation chamber 10, where external water cools the air in the upper and lower heat dissipation chambers. Simultaneously, the air fluid cools the inner coil of the coil winding 3.
[0023] Most of the heat in the rotor core 5 quickly enters the horizontal heat dissipation groove inside the stator core 6, and then, under the action of the rotating first pad 8 on the rotor, the fluid is promptly thrown outward. As the rotating first pad 8 on the rotor throws the heat generated by the stator core 6 and rotor core 5 outward at high speed radially, the third heat dissipation groove 11 on the casing effectively slows down the air speed, changes the direction of fluid movement, strengthens the upward and downward movement of the fluid, effectively circulates the air, and dissipates heat. The third heat dissipation groove 11 reduces the distance between the air and the outside of the casing, implementing water cooling for the flowing air and accelerating the effective dissipation of heat in the motor cavity. External water dissipates heat from the high-speed flowing fluid in the third heat dissipation groove 11, realizing the water cooling process. The fluid entering the first heat dissipation chamber 7 and the second heat dissipation chamber 10 from the second heat dissipation groove 61 dissipates air heat from the outer ring of the stator winding 3. External water cools the air in the upper and lower heat dissipation chambers. As the first rotating pad 8 and the blade group 41 continue to be thrown out radially at high speed, the above-mentioned air cooling and external water cooling processes are repeated, thereby forming a continuously circulating airflow to achieve stable heat dissipation inside the motor.
[0024] In addition, the air in each spoke cavity 4 is interconnected at high speed. On the one hand, this accelerates the cooling effect of the fluid. On the other hand, the high-speed rotating return hole 42 makes the fluid temperature in each spoke cavity tend to be balanced, so as to balance the heat dissipation performance of the stator core 6 and the rotor core 5, and make the motor have good heat dissipation effect and operating efficiency.
[0025] In a preferred embodiment, the blade assembly 41 includes a first blade 411 and a second blade 412. The first blade 411 is disposed on the upper part of the spokes 4, and the second blade 412 is disposed on the lower part of the spokes 4. The first blade 411 is inclined downwards, and the second blade 412 is inclined upwards. The rotation of the first blade 411 generates downward-moving airflow, which dissipates heat from the fluid in the first heat dissipation chamber 7 and carries it into the cavity between each spoke 4, and then into the horizontal heat dissipation groove of the rotor to dissipate heat from the rotor. The rotation of the second blade 412 generates upward-moving airflow, which dissipates heat from the fluid in the second heat dissipation chamber 10 and carries it into the cavity between each spoke, and then into the horizontal heat dissipation groove of the rotor to dissipate heat from the rotor. The airflow generated by the cooperation of the first blade 411 and the second blade 412 increases the heat dissipation area and improves the heat dissipation effect.
[0026] As a preferred embodiment, the spokes 4 are evenly distributed along the circumference of the rotor shaft 2, and at least six spokes 4 are provided, each of which has a through-hole reflux hole 42. The through-hole reflux hole 42 allows the air in each spoke cavity to communicate with each other at high speed. On the one hand, this accelerates the cooling effect of the fluid; on the other hand, the high-speed rotating reflux hole helps the fluid temperature in each spoke cavity to reach a balanced state, thereby balancing the heat dissipation performance of the stator core and rotor core, resulting in good heat dissipation and operating efficiency of the motor.
[0027] As a preferred example, the rotor core 5 is provided with a first pad 8 in the middle; the first pad 8 is arranged horizontally at intervals along the circumference; the number of the first pads (8) is N, N≥3. The function of the first pad 8 is to divide the rotor core into several segments in the height direction, and to form a horizontal heat dissipation groove between each segment, so that the heat in the lamination moves quickly upward or downward into the horizontal heat dissipation groove; the high-speed rotating first pad 8 acts as a blade, throwing the heat in the horizontal groove outward, thereby accelerating the heat dissipation in the lamination.
[0028] In a preferred embodiment, the outer wall of the rotor core 5 is provided with first heat dissipation grooves 51. These first heat dissipation grooves 51 are vertically spaced along the circumference and are arc-shaped. The number of first heat dissipation grooves 51 is M, where M≥5. The function of the first heat dissipation grooves 51 is to transfer heat from the horizontal heat dissipation grooves into the vertical first heat dissipation grooves 51, and then allow the heat to move vertically upwards and downwards from the first heat dissipation grooves 51, thus transferring the heat into the first heat dissipation chamber 7 and the second heat dissipation chamber 10. Multiple first heat dissipation grooves 51 allow for faster heat movement and thus faster heat dissipation.
[0029] As a preferred embodiment, the stator core 6 is provided with a second spacer 9 in the middle; the second spacers 9 are arranged horizontally at intervals along the circumference, and the number of second spacers 9 is equal to that of the first spacers 8; the height of the second spacers 9 is equal to the height of the first spacers 8; each second spacer 9 and the first spacer 8 are located on the same horizontal line. The function of the second spacers 9 is to divide the stator core 6 into several segments along the height direction, forming horizontal heat dissipation grooves between each segment, thereby allowing the heat from the laminations and the coil windings in the laminations to move quickly upwards or downwards into the horizontal heat dissipation grooves, realizing the heat dissipation process of air, and then being promptly thrown outwards by the action of the first spacers 8 rotating on the rotor. The second spacers 9 being set at the same height as the first spacers 8 can form a channel for airflow, allowing the airflow to flow directly inside the rotor core 5 and the stator core 6 with less obstruction and better heat dissipation effect.
[0030] As a preferred embodiment, the outer wall of the stator core 6 is provided with a second heat dissipation groove 61; the second heat dissipation groove 61 is vertically spaced along the circumference, the second heat dissipation groove 61 is a rectangular groove, and the number of the second heat dissipation grooves 61 is Q, where Q≥5. The function of the second heat dissipation groove 61 is to transfer the heat from the stator core 6 and the rotor core 5 from the horizontal heat dissipation groove into the vertical second heat dissipation groove 61, and then move vertically upward or downward from the second heat dissipation groove 61, accelerating the cooling effect of the rapidly flowing gas in the second heat dissipation groove on the water outside the casing, and then the fluid enters the first heat dissipation chamber 7 and the first heat dissipation chamber 10 to continuously dissipate heat.
[0031] As a preferred embodiment, the area of the first heat dissipation groove 51 is 0.1 to 0.4 times the cross-sectional area of the second heat dissipation groove 61. Most of the heat in the stator and rotor flows out from the second heat dissipation groove 61 and is simultaneously cooled by the water flowing outside the casing, thereby improving the heat dissipation efficiency.
[0032] As a preferred embodiment, the inner wall of the housing 1 is provided with spaced-apart third heat dissipation grooves 11. The third heat dissipation grooves 11 are horizontal annular grooves. The horizontal symmetry line of the third heat dissipation groove 11 is at the same height as the horizontal symmetry line of the first heat dissipation groove 51 and the second heat dissipation groove 61, and the height of the third heat dissipation groove 11 is greater than the height of the first heat dissipation groove 51 and the second heat dissipation groove 61. The functions of the third heat dissipation grooves 11 are as follows: First, when the rotating first pad 8 on the rotor throws the heat generated by the stator core 6 and the rotor core 5 radially outward at high speed, the third heat dissipation grooves 11 effectively slow down the air speed, change the direction of fluid movement, strengthen the upward and downward movement of the fluid, and effectively circulate the air to dissipate heat. Second, the arrangement of the third heat dissipation grooves 11 reduces the distance between the air and the outside of the housing, implementing water cooling for the flowing air and accelerating the effective dissipation of heat in the motor cavity. Third, the horizontally arranged third heat dissipation grooves 11 and the vertically arranged second heat dissipation grooves are interconnected, allowing the horizontal and vertical heat dissipation grooves to form a heat dissipation network at different heights and diameters, accelerating and balancing the overall heat dissipation effect of the motor. Finally, the external water body dissipates heat from the high-speed fluid flowing in the third heat dissipation tank 11, realizing the water cooling process.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. The specific embodiments and descriptions in the specification are merely for further illustrating the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed. The scope of protection of this utility model is defined by the claims and their equivalents.
Claims
1. A submersible pump motor with a good heat dissipation structure, characterized in that, The application relates to a motor, which comprises a stator assembly and a rotor assembly; the rotor assembly is arranged inside the stator assembly and is in clearance fit with the stator assembly; the stator assembly comprises a casing (1), a stator winding (3), a stator core (6), an upper bearing seat and a lower bearing seat; the stator winding (3) is arranged inside the casing (1); the stator core (6) is arranged on the inner wall of the casing (1), and the stator winding (3) is connected with the stator core (6); the upper bearing seat is arranged on the upper portion of the casing (1), and the lower bearing seat is arranged on the lower portion of the casing (1); the space on the upper portion of the stator core (6) forms a first heat dissipation chamber (7), and the space on the lower portion of the stator core (6) forms a second heat dissipation chamber (10); the rotor assembly comprises a rotor shaft (2), a spoke (4) and a rotor core (5); the rotor shaft (2) is arranged inside the casing (1), the spoke (4) is arranged on the surface of the rotor shaft (2), and the rotor core (5) is arranged on the outer ring of the spoke (4); the surface of the spoke (4) is provided with a vane group (41).
2. The motor for a submersible pump according to claim 1, characterized in that, The vane group (41) comprises first vanes (411) and second vanes (412); the first vanes (411) are arranged on the upper portion of the spoke (4), and the second vanes (412) are arranged on the lower portion of the spoke (4); the first vanes (411) are arranged in a downward inclination mode, and the second vanes (412) are arranged in an upward inclination mode.
3. The motor for a submersible pump according to claim 1, characterized in that, The spoke (4) is uniformly arranged on the rotor shaft (2) along the circumferential direction, and at least six spoke (4) are arranged; the spoke (4) is provided with a through-flow hole (42).
4. The motor for a submersible pump according to claim 1, characterized by The middle portion of the rotor core (5) is provided with a first pad strip (8); the first pad strip (8) is arranged in a horizontal interval mode along the circumferential direction; the number of the first pad strip (8) is N, and N is greater than or equal to 3.
5. The motor for a submersible pump according to claim 1, characterized by The outer wall of the rotor core (5) is provided with a first heat dissipation groove (51); the first heat dissipation groove (51) is arranged in a vertical interval mode along the circumferential direction; the first heat dissipation groove (51) is an arc-shaped groove; the number of the first heat dissipation groove (51) is M, and M is greater than or equal to 5.
6. The motor for a submersible pump according to claim 5, characterized in that, The middle portion of the stator core (6) is provided with a second pad strip (9); the second pad strip (9) is arranged in a horizontal interval mode along the circumferential direction; the number of the second pad strip (9) is equal to that of the first pad strip (8); the height of the second pad strip (9) is equal to that of the first pad strip (8); each second pad strip (9) and the first pad strip (8) are located on the same horizontal line.
7. The motor for a submersible pump according to claim 6, characterized in that, The outer wall of the stator core (6) is provided with a second heat dissipation groove (61); the second heat dissipation groove (61) is arranged in a vertical interval mode along the circumferential direction; the second heat dissipation groove (61) is a rectangular groove; the number of the second heat dissipation groove (61) is Q, and Q is greater than or equal to 5.
8. The motor for a submersible pump according to claim 7, characterized in that, The area of the first heat dissipation groove (51) is 0.1-0.4 times the cross-sectional area of the second heat dissipation groove (61).
9. The motor for submersible pump according to claim 8, characterized in that, The inner wall of the casing (1) is provided with third heat dissipation grooves (11) arranged at intervals, the third heat dissipation grooves (11) are horizontal annular grooves, the horizontal symmetry lines of the third heat dissipation grooves (11) are at the same height as the horizontal symmetry lines of the first heat dissipation grooves (51) and the second heat dissipation grooves (61), and the height of the third heat dissipation grooves (11) is greater than the height of the first heat dissipation grooves (51) and the second heat dissipation grooves (61).