Efficient water-cooled motor

Abstract

The utility model relates to an efficient water-cooled motor which comprises a motor body, the motor body is composed of a motor shell, a stator core, a rotor, a bearing and an end cover, a water bin integrated with the motor shell is arranged on the outer side of the motor shell, and the water bin comprises a first water inlet pipe, a first water outlet pipe and a cooling water channel formed between the first water inlet pipe and the first water outlet pipe; the winding end parts are arranged at the two ends of the stator iron core; the cooling system is arranged at the end part of the winding, is positioned at two ends of the stator core and is used for cooling the end part of the winding; the water sump is arranged on the machine shell, cooling water flows out from the first water inlet pipe through the cooling water channel and then flows out from the first water outlet pipe, heat is brought out through flowing water, the stator iron core is cooled, and meanwhile the cooling system is arranged at the end of the winding to cool the end of the winding. The motor has the effects of reducing temperature rise, ensuring high-speed operation of the motor and improving the performance of the motor.

Description

Technical Field

[0001] The present application relates to the field of motor cooling, and in particular to a high-efficiency water-cooled motor. Background Art

[0002] The application of high-speed motors is becoming more and more extensive and frequent, but an inevitable consequence of high-speed motors is increased iron loss, high heat generation, and prominent heat dissipation problems. Therefore, solving the high-speed heat generation problem is a prominent issue.

[0003] The motor is generally cooled by air or water. The heat generated by the stator coil of an air-cooled motor is generally taken away by the medium air, and the heat generated by the stator coil of a water-cooled motor is generally taken away by the medium water. Since the air gap between the motor stator and the rotor is very small, the air cannot circulate and the heat generated by the rotor cannot be taken away by the circulation of air. The water channel of the water-cooled motor is on the motor stator housing, far away from the rotor, and cannot take away the heat generated by the rotor.

[0004] For example, a high-efficiency cooling device for a motor with wind and water mixing is provided. The main technical principle of this patent is to achieve high-efficiency cooling of the motor stator coil and rotor through components such as a water-cooled shell, a winding stator core, a rotor, an end cover, and a fan. There is a water tank in the middle of the water-cooled shell, and air inlets and air outlets are provided on the water-cooled shell at both ends of the water tank. Ventilation slots are designed in the stator slots of the winding stator core. The fan is fixed at the air inlet of the water-cooled shell. The rotor is located in the middle of the winding stator core and is supported by the end covers at both ends. The end covers at both ends are fixed to the water-cooled shell respectively. The circulating water in the water tank on the water-cooled shell takes away the heat generated by the winding stator core. The fan forces air in from the air inlet and takes away the heat generated by the rotor from the air outlet through the ventilation slots in the stator slots of the winding stator core, thus achieving high-efficiency cooling of the motor with wind and water mixing.

[0005] The above technical solution can solve the heat dissipation problem of the motor to a certain extent, but for high-speed motors, this heat dissipation method still cannot solve the heat dissipation problem more thoroughly. Utility Model Content

[0006] In order to better reduce temperature rise and improve motor performance, the present application provides a high-efficiency water-cooled motor.

[0007] The present application provides a high-efficiency water-cooled motor adopts the following technical solution:

[0008] A high-efficiency water-cooled motor, comprising

[0009] A machine body, the machine body is composed of a casing, a stator core, a rotor, a bearing, and an end cover. A water tank integrated with the casing is arranged outside the casing, the water tank comprises a first water inlet pipe and a first water outlet pipe, and a cooling water channel opened between the first water inlet pipe and the first water outlet pipe;

[0010] Winding ends, the winding ends are arranged at two ends of the stator core;

[0011] A cooling system is provided at the ends of the windings at both ends of the stator core to cool the ends of the windings.

[0012] By adopting the above technical solution, the heat generated when the motor runs at high speed is first transferred to the stator core through the winding end, and then transferred to the casing together with the heat of the stator core. By arranging a water tank on the casing, cooling water is passed from the first water inlet pipe through the cooling water channel and then flows out from the first water outlet pipe. The heat is taken out by the flowing water to cool the stator core. At the same time, a cooling system is arranged at the winding end to cool the winding end, which can take away the copper loss and iron loss of the motor to the greatest extent, reduce the temperature rise, ensure the high-speed operation of the motor, and improve the motor performance.

[0013] Preferably, the cooling system includes a first cooling water pipe arranged on the outside of the winding end and a second cooling water pipe arranged on the inside of the winding end, the first cooling water pipe surrounds the outside of the winding end and is arranged at both ends of the stator core, a second water inlet pipe and a second water outlet pipe are arranged on the two first cooling water pipes, the second water inlet pipe and the second water outlet pipe are arranged on the outside of the casing, the second cooling water pipe includes an inlet annular water channel and an outlet annular water channel arranged at both ends of the stator core and surrounding the outside of the winding end, and an intermediate pipe connecting the inlet annular water channel and the outlet annular water channel, the inlet annular water channel is provided with a third water inlet pipe that runs through the casing, and the outlet annular water channel is provided with a third water outlet pipe that runs through the casing.

[0014] By adopting the above technical solution, a first cooling water pipe and a second cooling water pipe are arranged on both sides inside and outside the winding end. The water flowing through the first cooling water pipe and the second cooling water pipe takes away the heat from the stator core winding end, and quickly cools down the winding end, which can take away the copper loss and iron loss of the motor to the greatest extent, reduce the temperature rise, ensure the high-speed operation of the motor, and improve the motor performance.

[0015] Preferably, thermally conductive adhesive is provided at both ends of the stator core, and the thermally conductive adhesive wraps the winding ends.

[0016] By adopting the above technical scheme, the thermal conductive adhesive has the properties of high thermal conductivity, high temperature resistance, flame retardancy, weather resistance, etc. The thermal conductive adhesive is arranged at both ends of the stator core. The heat of the winding ends is first transferred to the thermal conductive adhesive. Due to the high thermal conductivity of the thermal conductive adhesive, the winding ends can be better protected, thereby further improving the motor performance.

[0017] Preferably, the second water inlet pipe and the third water inlet pipe as well as the second water outlet pipe and the third water outlet pipe are arranged inside the casing in the thermal conductive adhesive.

[0018] By adopting the above technical solution, the thermal conductive adhesive has good thermal conductivity. The heat at the winding end is first transferred to the thermal conductive adhesive, and then transferred to the water inlet annular water channel and the water outlet annular water channel of the first cooling water pipe and the second cooling water pipe. The flowing cooling water takes away the heat, which can speed up the heat reduction rate, thereby reducing the temperature rise of the motor and improving the motor performance.

[0019] Preferably, the third water inlet pipe is provided in plurality.

[0020] By adopting the above technical solution, the third water inlet pipe is arranged into multiple ones, and the multiple water inlet pipes pass the cooling water into the water inlet annular water channel, and then pass through the intermediate pipe and be discharged through the third water outlet pipe of the water outlet annular water channel. The amount of cooling water entering is increased, the circulation of cooling water is accelerated, the motor is cooled down quickly, and the motor performance is further improved.

[0021] Preferably, solenoid valves are provided at the water inlets of the plurality of third water inlet pipes.

[0022] By adopting the above technical solution, when the motor is running at high speed, high temperature will continue to be generated, and the motor needs to be continuously cooled. However, when the motor starts to run or stops running, the temperature drops, and the required cooling water flow rate is reduced. Several solenoid valves can be closed to save energy.

[0023] Preferably, a plurality of intermediate pipes are provided.

[0024] By adopting the above technical solution, the intermediate pipe is arranged along the circumference of the rotor. The heat generated when the rotor rotates is first cooled through the intermediate pipe. By setting multiple intermediate pipes, the cooling effect can be further improved, thereby improving the motor performance.

[0025] Preferably, the same number of water pipes as the number of slots are arranged on the teeth of the stator core.

[0026] By adopting the above technical solution, water pipes as many as the number of slots are arranged on the teeth of the stator core, so as to facilitate cooling of the windings in the slots of the stator core and the surface of the rotor.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the motor is running at high speed, the heat generated is first transferred to the stator core through the winding end, and then transferred to the casing together with the heat of the stator core. By setting a water tank on the casing, cooling water flows from the first water inlet pipe through the cooling water channel and then out of the first water outlet pipe. The heat is taken out by the flowing water to cool the stator core. At the same time, a cooling system is set at the winding end to cool the winding end, which can take away the copper loss and iron loss of the motor to the greatest extent, reduce the temperature rise, ensure the high-speed operation of the motor, and improve the motor performance;

[0029] 2. The first cooling water pipe and the second cooling water pipe are arranged on both sides of the inner and outer sides of the winding end. The water flowing through the first cooling water pipe and the second cooling water pipe takes away the heat from the stator core winding end, and quickly cools down the winding end, which can take away the copper loss and iron loss of the motor to the greatest extent, reduce the temperature rise, ensure the high-speed operation of the motor, and improve the motor performance;

[0030] 3. Thermal conductive adhesive has the properties of high thermal conductivity, high temperature resistance, flame retardancy, and weather resistance. Thermal conductive adhesive is set at both ends of the stator core. The heat at the winding ends is first transferred to the thermal conductive adhesive. Due to the high thermal conductivity of the thermal conductive adhesive, the winding ends can be better protected, further improving the performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a high-efficiency water-cooled motor in the present application.

[0032] Figure 2 It is a schematic diagram of the first cooling water pipe structure.

[0033] Figure 3 It is a schematic diagram of the second cooling water pipe structure.

[0034] Explanation of the accompanying drawings: 1. body; 11. casing; 111. water tank; 1111. first water inlet pipe; 1112. first water outlet pipe; 1113. cooling water channel; 12. stator core; 13. rotor; 14. bearing; 15. end cover; 2. winding end; 3. cooling system; 31. first cooling water pipe; 311. second water inlet pipe; 312. second water outlet pipe; 32. second cooling water pipe; 321. water inlet annular water channel; 3211. third water inlet pipe; 32111. solenoid valve; 322. water outlet annular water channel; 3221. third water outlet pipe; 323. intermediate pipe; 4. thermal conductive adhesive. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] The present application embodiment discloses a high-efficiency water-cooled motor. Figure 1 The high-efficiency water-cooled motor includes a body 1, a winding end 2 and a cooling system 3.

[0037] Reference Figure 1 The machine body 1 includes a housing 11 , a stator core 12 , a rotor 13 , a bearing 14 and an end cover 15 , and the winding ends 2 are arranged at both ends of the stator core 12 .

[0038] Specifically, the heat generated when the motor runs at a high speed is first transferred to the stator core 12 through the winding end 2 , and then transferred to the housing 11 together with the heat of the stator core 12 .

[0039] Reference Figure 1 A water tank 111 is arranged on the casing 11, and the water tank 111 includes a first water inlet pipe 1111 and a first water outlet pipe 1112, and a cooling water channel 1113 is opened between the first water inlet pipe 1111 and the first water outlet pipe 1112. Specifically, cooling water flows out from the first water inlet pipe 1111 through the cooling water channel 1113 and then flows out from the first water outlet pipe 1112, and the heat is taken away by the flowing water to cool the stator core 12. At the same time, a cooling system 3 is arranged at the position of the winding end 2 to cool the winding end 2, which can take away the copper loss and iron loss of the motor to the greatest extent, reduce the temperature rise, ensure the high-speed operation of the motor, and improve the motor performance.

[0040] Reference Figure 1-Figure 3 The cooling system 3 includes a first cooling water pipe 31 and a second cooling water pipe 32. For details, refer to Figure 2 The first cooling water pipe 31 is an annular water pipe, which is arranged on both sides of the winding end 2, specifically, on the outside of the annular winding end 2, surrounding the winding end 2 from the outside circumferentially to cool the outside of the winding end 2. The first cooling water pipe 31 is provided with a second water inlet pipe 311 and a second water outlet pipe 312. The second water inlet pipe 311 takes in cooling water, and the second water outlet pipe 312 discharges the water inside the first cooling water pipe 31.

[0041] Reference Figure 3 The second cooling water pipe 32 includes an inlet annular water channel 321, an outlet annular water channel 322, and an intermediate pipe 323. A third inlet pipe 3211 is arranged at the inlet annular water channel 321, and a third outlet pipe 3221 is arranged at the outlet annular water channel 322. Specifically, the inlet annular water channel 321 is arranged on the inner side of the annular winding end 2 located on one side of the stator core 12, and the outlet annular water channel 322 is arranged on the inner side of the annular winding end 2 located on the other side of the stator core 12, and is connected through the intermediate pipe 323. A plurality of intermediate pipes 323 are arranged. In this embodiment, two intermediate pipes 323 are arranged. A plurality of third inlet pipes 3211 are arranged at the inlet annular water channel 321. A solenoid valve 32111 is arranged at the third inlet pipe 3211 to facilitate the control of the water intake.

[0042] At the same time, the teeth of the stator core 12 are arranged with water pipes as many as the number of slots, so as to facilitate cooling of the windings in the slots of the stator core 12 and the surface of the rotor 13.

[0043] Reference Figure 1 , also includes a thermally conductive adhesive 4, which is arranged at both ends of the stator core 12, and the second water inlet pipe 311 and the third water inlet pipe 3211 and the second water outlet pipe 312 and the third water outlet pipe 3221 are arranged in the thermally conductive adhesive 4 inside the casing 11. The thermally conductive adhesive 4 has good thermal conductivity. The heat of the winding end 2 is first transferred to the thermally conductive adhesive 4, and then transferred to the first cooling water pipe 31 and the water inlet annular water channel 321 and the water outlet annular water channel 322 of the second cooling water pipe. The flowing cooling water takes away the heat, which can accelerate the speed of heat reduction, thereby reducing the temperature rise of the motor and improving the motor performance.

[0044] The implementation principle of a high-efficiency water-cooled motor in an embodiment of the present application is as follows: the heat generated when the motor runs at high speed is first transferred to the stator core 12 through the winding end 2, and then transferred to the casing 11 together with the heat of the stator core 12. By setting a water tank 111 on the casing 11, cooling water flows from the first water inlet pipe 1111 through the cooling water channel 1113 and then out of the first water outlet pipe 1112. The heat is taken out by the flowing water to cool the stator core 12. At the same time, a cooling system 3 is set at the position of the winding end 2 to cool the winding end 2. This can take away the copper loss and iron loss of the motor to the greatest extent, reduce the temperature rise, ensure the high-speed operation of the motor, and improve the motor performance.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency water-cooled motor, characterized in that: include A machine body (1), the machine body (1) comprising a housing (11), a stator core (12), a rotor (13), a bearing (14), and an end cover (15); a water tank (111) which is integral with the housing (11) is arranged outside the housing (11); the water tank (111) comprises a first water inlet pipe (1111) and a first water outlet pipe (1112), and a cooling water channel (1113) provided between the first water inlet pipe (1111) and the first water outlet pipe (1112); Winding ends (2), the winding ends (2) being arranged at two ends of the stator core (12); A cooling system (3) is provided at the winding ends (2) at both ends of the stator core (12) to cool the winding ends (2).

2. The high-efficiency water-cooled motor according to claim 1, characterized in that: The cooling system (3) comprises a first cooling water pipe (31) arranged on the outside of the winding end (2) and a second cooling water pipe (32) arranged on the inside of the winding end (2); the first cooling water pipe (31) surrounds the outside of the winding end (2) and is arranged at both ends of the stator core (12); a second water inlet pipe (311) and a second water outlet pipe (312) are arranged on both of the first cooling water pipes (31); the second water inlet pipe (311) and the second water outlet pipe (312) are arranged on the outside of the casing (11); The second cooling water pipe (32) comprises an inlet annular water channel (321) and an outlet annular water channel (322) which are arranged at both ends of the stator core (12) and surround the outside of the winding end (2), and an intermediate pipe (323) connecting the inlet annular water channel (321) and the outlet annular water channel (322); the inlet annular water channel (321) is provided with a third inlet pipe (3211) which passes through the casing (11); and the outlet annular water channel (322) is provided with a third outlet pipe (3221) which passes through the casing (11).

3. The high-efficiency water-cooled motor according to claim 2, characterized in that: Heat-conducting glue (4) is provided at both ends of the stator core (12), and the heat-conducting glue (4) wraps the winding end (2).

4. The high-efficiency water-cooled motor according to claim 3 is characterized in that: The second water inlet pipe (311) and the third water inlet pipe (3211) as well as the second water outlet pipe (312) and the third water outlet pipe (3221) are arranged inside the heat-conducting glue (4) inside the housing (11).

5. The high-efficiency water-cooled motor according to claim 4, characterized in that: The third water inlet pipe (3211) is arranged in plurality.

6. The high-efficiency water-cooled motor according to claim 5, characterized in that: Solenoid valves (32111) are provided at the water inlets of the plurality of third water inlet pipes (3211).

7. The high-efficiency water-cooled motor according to claim 2, characterized in that: The intermediate pipes (323) are provided in plurality.

8. The high-efficiency water-cooled motor according to claim 1, characterized in that: The same number of water pipes as the number of slots is arranged on the teeth of the stator core (12).

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