An electric machine with cooling function

Abstract

This invention relates to the field of motor technology and provides a motor with a cooling function, comprising: a housing, an excitation group disposed on the inner wall of the housing; a rotor group disposed inside the excitation group within the housing, and a main shaft mounted on the rotor group; a front end cover fixed to the front of the housing by screws and a rear end cover fixed to the rear of the housing by screws; a linkage heat dissipation assembly, including a first fan blade disposed in the front end cover and fixedly connected to the main shaft, and a second fan blade fixed to the tail end of the main shaft; a cavity formed on the housing for holding coolant, wherein a plurality of baffles are alternately fixed within the cavity; fins disposed on the outer wall of the housing; and a cooling circulation mechanism disposed on the housing for pumping coolant flow within the cavity. The motor with a cooling function provided by this solution achieves a dual cooling effect of airflow heat dissipation and liquid circulation heat dissipation, effectively improving heat dissipation efficiency and alleviating the heat dissipation bottleneck of high power density motors.

Description

Technical Field

[0001] This invention belongs to the field of motor technology, and in particular relates to a motor with a cooling function. Background Technology

[0002] With the rapid development of industrial automation, new energy vehicles, intelligent manufacturing and other fields, the motor, as the core component of power output, directly affects the working efficiency and service life of the entire equipment system. In order to meet the application requirements of high power, high speed and miniaturization, the power density of motors continues to increase. During operation, the heat generated by electromagnetic loss, mechanical loss and other factors increases significantly, resulting in an increase in the internal temperature of the motor.

[0003] Currently, if the temperature of key components such as windings and cores exceeds the limit during motor operation, it will lead to accelerated aging of winding insulation, demagnetization of permanent magnets, and deterioration of bearing lubrication performance. Poor heat dissipation is an important factor causing motor failure, and efficient cooling technology has become a core bottleneck restricting the development of high power density motors. Existing motor cooling methods have obvious limitations: natural cooling relies on natural convection between the casing and the environment. Although the structure is simple, the heat dissipation efficiency is extremely low and it is only suitable for small power motors. Forced air cooling accelerates airflow to assist heat dissipation through fans. It is low-cost and easy to implement. However, due to the physical characteristics of air's low specific heat capacity and low thermal conductivity, the heat dissipation capacity has a significant upper limit and it is difficult to meet the cooling requirements of high power density motors. Summary of the Invention

[0004] This invention provides a motor with a cooling function, aiming to solve the problem of poor heat dissipation in current motors as mentioned in the background art.

[0005] This invention is implemented as follows: a motor with a cooling function includes: a housing, an excitation group disposed on the inner wall of the housing; a rotor group disposed inside the excitation group within the housing, and a main shaft mounted on the rotor group; a front end cover fixed to the front of the housing by screws and a rear end cover fixed to the rear of the housing by screws; a linkage heat dissipation assembly, including a first fan blade disposed in the front end cover and fixedly connected to the main shaft, and a second fan blade fixed to the tail end of the main shaft; a cavity formed on the housing for holding coolant, wherein a plurality of baffles are alternately fixed in the cavity; fins disposed on the outer wall of the housing; and a cooling circulation mechanism disposed on the housing for pumping coolant flow in the cavity.

[0006] Preferably, the cooling circulation mechanism includes: a liquid guiding shell fixed below the housing; a first rotating rod rotatably mounted inside the liquid guiding shell via a sealed bearing; an impeller fixed on the first rotating rod; a bottom shell fixed to the bottom of the housing; and a mounting shell disposed inside the bottom shell, the mounting shell containing a finned tube; a first transmission rod rotatably mounted inside the housing via a sealed bearing; the first transmission rod being connected to the main shaft via a fixedly mounted seventh bevel gear; and the first transmission rod being connected to the first rotating rod via a fixedly mounted first bevel gear.

[0007] Preferably, the cooling circulation mechanism further includes: a liquid extraction pipe with its inlet end connected to the cavity and its outlet end connected to the liquid guide shell; an outlet pipe with its inlet end connected to the liquid guide shell and its outlet end connected to the inlet end of the finned tube; and a return pipe with its inlet end connected to the outlet end of the finned tube and its outlet end connected to the cavity.

[0008] Preferably, the mounting housing is provided with an auxiliary heat dissipation mechanism for dissipating heat from the finned tube. The auxiliary heat dissipation mechanism includes: an air guide shell fixed to the top of the mounting housing; a plurality of air inlets formed on the top of the mounting housing; a second rotating rod rotatably mounted inside the mounting housing via a bearing; and a third fan blade fixed to the second rotating rod.

[0009] Preferably, the auxiliary heat dissipation mechanism further includes: a second transmission rod rotatably mounted in the air guide shell via a sealed bearing; the second transmission rod and the first transmission rod are connected by a meshing second bevel gear; the second transmission rod and the second rotating rod are connected by a meshing third bevel gear.

[0010] Preferably, the housing has an inlet hole, and a waterproof connector is installed in the inlet hole via internal threads.

[0011] Preferably, a dustproof mesh plate is fixed to the air guide shell by screws to prevent external dust from entering the interior of the mounting shell.

[0012] Preferably, a baffle is fixed to one side of the bottom shell by screws, and an exhaust hole for venting hot air is provided on the baffle.

[0013] Preferably, a sliding plate is fixed on the air inlet of the front end shell, a dustproof plate is slidably installed in the sliding plate, and an exhaust port is provided on the rear cover.

[0014] Preferably, a base plate is fixed to the bottom of the bottom shell, and mounting holes are symmetrically opened on the base plate. A sealing plug is threaded into the fluid inlet of the cavity.

[0015] Compared with related technologies, the motor with cooling function provided by the present invention has the following beneficial effects: The main shaft drives the first and second fan blades to form basic airflow for heat dissipation. At the same time, the main shaft drives the first transmission rod and the first rotating rod to drive the impeller, pushing the coolant in the cavity through the liquid extraction pipe and the liquid outlet pipe into the finned tube for heat exchange. Then, it completes the circulation through the return pipe. The heat exchange is enhanced by the fins on the outer wall of the shell and the baffles in the cavity. In addition, the auxiliary heat dissipation mechanism drives the third fan blade through the second transmission rod and the second rotating rod to accelerate the heat dissipation of the finned tube. The design of the dustproof mesh plate and the dustproof plate protection and cleaning mechanism, as well as the maintenance-friendly design of the liquid exchange mechanism, achieves a dual cooling effect of airflow heat dissipation and liquid circulation heat dissipation. This effectively improves the heat dissipation efficiency and alleviates the heat dissipation bottleneck of high power density motors. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of a motor with cooling function provided by the present invention; Figure 2 This is a schematic diagram of the main sectional view of a motor with cooling function provided by the present invention; Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure; Figure 4 for Figure 2 An enlarged structural diagram of part B shown in the figure; Figure 5 for Figure 2 An enlarged structural diagram of section C shown in the figure; Figure 6 for Figure 2 An enlarged structural diagram of part D shown in the figure; Figure 7 This is a schematic diagram of the mounting bracket in this invention; Figure 8 This is a schematic diagram of the dustproof mesh plate in this invention; Figure 9 This is a top-view cross-sectional structural diagram of the mounting shell and finned tube in this invention.

[0017] Reference numerals: 1. Housing; 2. Excitation unit; 3. Rotor unit; 4. Main shaft; 5. Front end housing; 6. Rear cover; 7. First fan blade; 8. Second fan blade; 9. Cavity; 10. Fin; 11. Baffle; 12. Sealing plug; 13. Bottom housing; 14. Base plate; 15. Liquid guide housing; 16. First rotating rod; 17. Impeller; 18. Liquid extraction pipe; 19. Liquid outlet pipe; 20. Mounting housing; 21. Finned tube; 22. Return pipe; 23. First transmission rod; 24. First bevel tooth; 25. Air guide housing 26. Air inlet; 27. Second rotating rod; 28. Third fan blade; 29. ​​Dustproof mesh plate; 30. Second transmission rod; 31. Second bevel gear; 32. Third bevel gear; 33. Mounting bracket; 34. Third rotating rod; 35. Brush plate; 36. Third transmission rod; 37. Fourth transmission rod; 38. Fourth bevel gear; 39. Fifth bevel gear; 40. Sixth bevel gear; 41. Fluid changing pipe; 42. Valve; 43. Seventh bevel gear; 44. Baffle; 45. Exhaust port; 46. Slide plate; 47. Dustproof plate. Detailed Implementation

[0018] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0019] This invention provides a motor with a cooling function, such as... Figure 1-9 As shown, the motor with cooling function includes: a housing 1, with an excitation group 2 on the inner wall of the housing 1; a rotor group 3 located inside the excitation group 2 in the housing 1, with a main shaft 4 mounted on the rotor group 3; a front end shell 5 fixed to the front of the housing 1 by screws and a rear cover 6 fixed to the rear of the housing 1 by screws; a linkage heat dissipation assembly, including a first fan blade 7 disposed in the front end shell 5 and fixedly connected to the main shaft 4, and a second fan blade 8 fixed to the tail end of the main shaft 4; a cavity 9 opened on the housing 1 for holding coolant, with a plurality of baffles 11 fixedly in the cavity 9; fins 10 disposed on the outer wall of the housing 1; and a cooling circulation mechanism disposed on the housing 1 for pumping coolant flow in the cavity 9.

[0020] In this embodiment, when the motor starts, the rotor assembly 3 drives the main shaft 4 to rotate, and the main shaft 4 synchronously drives the first fan blade 7 and the second fan blade 8 in the linkage heat dissipation assembly to rotate. The first fan blade 7 generates airflow in the front end housing 5 to provide initial heat dissipation for the motor components near the front end housing 5; the second fan blade 8 pushes airflow at the rear of the motor to help remove heat from the rear of the motor. Through the action of dual airflow, basic heat dissipation is provided for the motor. Simultaneously, the main shaft 4 drives the first transmission rod 23 in the power transmission mechanism to rotate via the seventh bevel gear 43. The first transmission rod 23 then drives the first rotating rod 16 to rotate via the first bevel gear 24. The impeller 17 on the first rotating rod 16 rotates accordingly, generating negative pressure. Under the action of negative pressure, the coolant in the upper cavity 9 of the housing 1 enters the liquid guide shell 15 through the liquid extraction pipe 18, and then flows into the finned tube 21 in the mounting shell 20 through the liquid outlet pipe 19. During the flow, the coolant absorbs the heat conducted by the housing 1, thereby cooling the core components of the motor. Finally, the coolant, having absorbed heat, flows back to the cavity 9 through the return pipe 22, completing one cooling cycle. Furthermore, the fins 10 on the outer wall of the housing 1 increase the contact area between the housing 1 and the air, aiding in the dissipation of heat from the surface of the housing 1. The baffles 11 inside the cavity 9 separate the coolant flow path, extending the flow path of the coolant within the cavity 9 and improving the heat exchange effect between the coolant and the housing 1. Overall, the combination of coordinated heat dissipation and cooling cycle improves the motor's heat dissipation efficiency, alleviates the problem of insufficient heat dissipation capacity in existing cooling methods, and helps extend the motor's service life.

[0021] In a further preferred embodiment of the present invention, the cooling circulation mechanism includes: a liquid guiding shell 15 fixed below the housing 1; a first rotating rod 16 rotatably mounted within the liquid guiding shell 15 via a sealed bearing; an impeller 17 fixed on the first rotating rod 16; a bottom shell 13 fixed to the bottom of the housing 1; and a mounting shell 20 disposed within the bottom shell 13, wherein the mounting shell 20 is provided with a finned tube 21; a first transmission rod 23 rotatably mounted within the housing 1 via a sealed bearing; the first transmission rod 23 is connected to the main shaft 4 via a fixedly mounted seventh bevel gear 43; and the first transmission rod 23 is connected to the first rotating rod 16 via a fixedly mounted first bevel gear 24.

[0022] In this embodiment, when the motor is running, the rotation of the main shaft 4 will drive the first transmission rod 23, which is connected to it via the seventh bevel gear 43, to rotate. Since the first transmission rod 23 and the first rotating rod 16 are connected via the first bevel gear 24, the rotation of the first transmission rod 23 will further drive the first rotating rod 16 to rotate within the liquid guide shell 15, and the impeller 17 fixed on the first rotating rod 16 will also rotate synchronously, providing power for the flow of coolant; The negative pressure generated by the rotation of impeller 17 draws out the coolant from the upper cavity 9 of housing 1. The coolant enters the liquid guide shell 15 through the connecting structure, and then flows along the pipe into the finned tube 21 installed in the housing 20 inside the bottom shell 13. As the coolant flows through the finned tube 21, the finned tube 21 increases the contact area between the coolant and the air, helping the coolant dissipate the heat absorbed by the motor and achieving cooling of the coolant. Finally, the cooled coolant flows back to the cavity 9 through the return pipe 22, which is fixedly connected to the outlet end of the finned tube 21, forming a complete coolant circulation. The entire cooling circulation mechanism is driven by the motor's own main shaft 4, eliminating the need for additional power components and reducing energy consumption. At the same time, the finned tube 21 improves the heat dissipation efficiency of the coolant, more effectively removing heat from the motor's interior, further optimizing the motor's heat dissipation effect and ensuring stable motor operation.

[0023] In a further preferred embodiment of the present invention, the cooling circulation mechanism further includes: a liquid extraction pipe 18 with its inlet end connected to the cavity 9 and its outlet end connected to the liquid guide shell 15; an outlet pipe 19 with its inlet end connected to the liquid guide shell 15 and its outlet end connected to the inlet end of the finned tube 21; and a return pipe 22 with its inlet end connected to the outlet end of the finned tube 21 and its outlet end connected to the cavity 9. In this embodiment, when the cooling circulation mechanism is started, the impeller 17 inside the liquid guide shell 15 rotates to generate negative pressure, which acts on the cavity 9 through the liquid extraction pipe 18. Since the inlet end of the liquid extraction pipe 18 is connected to the cavity 9 and the outlet end is connected to the liquid guide shell 15, the coolant contained in the cavity 9 will enter the liquid extraction pipe 18 under the action of negative pressure and be transported to the liquid guide shell 15 through the liquid extraction pipe 18, providing an initial transport path for the circulation flow of the coolant; Subsequently, the coolant entering the liquid guide shell 15 is propelled by the impeller 17 and flows through the outlet pipe 19 to the finned tube 21. Because the inlet end of the outlet pipe 19 is connected to the liquid guide shell 15 and the outlet end is connected to the inlet end of the finned tube 21, the coolant can stably enter the interior of the finned tube 21 along the outlet pipe 19. Under the action of the finned tube 21, it exchanges heat with the outside air and gradually dissipates the motor heat carried in the coolant.

[0024] Finally, the coolant, having completed heat exchange and cooling, flows back to the cavity 9 through the return pipe 22. The inlet end of the return pipe 22 is connected to the outlet end of the finned tube 21, and the outlet end is connected to the cavity 9, providing a return channel for the coolant, allowing it to re-enter the cavity 9 to participate in the next cycle. The cooperation of the suction pipe 18, the outlet pipe 19, and the return pipe 22 constructs a complete and closed coolant circulation path, ensuring continuous coolant flow and heat exchange, improving the heat dissipation stability of the cooling circulation mechanism, and thus better ensuring temperature control during motor operation.

[0025] In a further preferred embodiment of the present invention, the mounting housing 20 is provided with an auxiliary heat dissipation mechanism for dissipating heat from the finned tube 21. The auxiliary heat dissipation mechanism includes: an air guide shell 25 fixed to the top of the mounting housing 20; a plurality of air inlets 26 formed on the top of the mounting housing 20; a second rotating rod 27 rotatably mounted inside the mounting housing 20 via a bearing; and a third fan blade 28 fixed to the second rotating rod 27.

[0026] In this embodiment, when the motor drives the cooling circulation mechanism, the auxiliary heat dissipation mechanism is activated simultaneously. Outside air enters the mounting shell 20 area through the air guide shell 25, and then enters the interior of the mounting shell 20 through several air inlets 26 opened on the top of the mounting shell 20, providing sufficient air for the heat dissipation of the finned tube 21 and constructing a basic airflow channel for auxiliary heat dissipation; Subsequently, the second rotating rod 27 begins to rotate under the action of power. Since the third fan blade 28 is fixed on the second rotating rod 27, the second rotating rod 27 will drive the third fan blade 28 to rotate synchronously inside the mounting housing 20. When the third fan blade 28 rotates, it will create airflow disturbance inside the mounting housing 20, accelerate the airflow speed around the finned tube 21, and enable the air to contact the finned tube 21 more fully. Finally, the flowing air carries away the heat from the surface of the finned tube 21. This heat-absorbed air is then discharged from the exhaust area of ​​the mounting housing 20, completing one auxiliary cooling process. Through the cooperation of the air guide housing 25, the air inlet 26, the second rotating rod 27, and the third fan blade 28, the auxiliary cooling mechanism can significantly improve the heat exchange efficiency between the finned tube 21 and the air, further accelerate the cooling rate of the coolant, provide support for the stable heat dissipation of the cooling circulation mechanism, and thus better control the overall temperature of the motor.

[0027] In a further preferred embodiment of the present invention, the auxiliary heat dissipation mechanism further includes: a second transmission rod 30 rotatably mounted in the air guide shell 25 via a sealed bearing; the second transmission rod 30 and the first transmission rod 23 are connected by a second bevel tooth 31 that meshes with each other; the second transmission rod 30 and the second rotating rod 27 are connected by a third bevel tooth 32 that meshes with each other.

[0028] In this embodiment, when the motor is running, the main shaft 4 drives the first transmission rod 23 to rotate. Since the first transmission rod 23 and the second transmission rod 30 are connected by the meshing second bevel teeth 31, the rotation of the first transmission rod 23 will drive the second transmission rod 30 to rotate in the air guide shell 25 through the meshing action of the second bevel teeth 31, thereby realizing the transmission of power from the first transmission rod 23 to the second transmission rod 30. Subsequently, because the second transmission rod 30 and the second rotating rod 27 are connected by a meshing third bevel gear 32, the rotation of the second transmission rod 30 will drive the second rotating rod 27 to rotate within the mounting housing 20 through the meshing action of the third bevel gear 32. This process changes the direction of power through bevel gear transmission, ensuring that the power can be adapted to the mounting position of the second rotating rod 27, and providing stable power for the rotation of the third fan blade 28; Finally, the second rotating rod 27 drives the third fan blade 28 to rotate, accelerating the airflow inside the mounting housing 20 and assisting in the heat dissipation of the finned tube 21. The entire transmission process requires no additional power source, directly utilizing the power generated by the motor itself to drive the auxiliary heat dissipation mechanism, reducing energy consumption and the number of components. At the same time, the use of sealed bearings reduces frictional loss when the second transmission rod 30 rotates and prevents external impurities from entering the air guide housing 25, ensuring the long-term stable operation of the auxiliary heat dissipation mechanism.

[0029] In a further preferred embodiment of the present invention, the housing 1 is provided with a wire inlet hole, and a waterproof connector is installed in the wire inlet hole by internal thread.

[0030] In this embodiment, during motor assembly, external cables need to be connected to the motor through the inlet hole on housing 1 to connect the motor to the external circuit. At this time, the operator can align the waterproof connector with the threaded structure of the inlet hole and rotate the waterproof connector to complete the threaded assembly with the inlet hole, thus fixing the waterproof connector at the inlet hole and providing a sealed protection base for the cable. External cables are connected to the motor through the inlet hole on housing 1 to connect the motor to the external circuit. At this point, the operator can align the waterproof connector with the threaded structure of the inlet hole and rotate it to complete the threaded assembly, thus fixing the waterproof connector at the inlet hole and providing a sealed protective base for the cable. After assembly, the waterproof connector will fit tightly against the inner wall of the inlet hole and the outer wall of the cable, forming a sealing structure at the gap between the inlet hole and the cable. This sealing structure can prevent external dust and other impurities from entering the housing 1 through the inlet hole, and prevent impurities from contacting the excitation group 2, rotor group 3 and other components inside the motor.

[0031] In a further preferred embodiment of the present invention, a dustproof mesh plate 29 is fixed to the air guide shell 25 by screws to prevent external dust from entering the interior of the mounting shell 20.

[0032] In this embodiment, the operator needs to align the dustproof mesh 29 with the preset installation position of the air guide shell 25, and then fix the dustproof mesh 29 to the air guide shell 25 with screws so that the dustproof mesh 29 covers the air intake area of ​​the air guide shell 25, in order to prepare for blocking dust from entering the interior of the mounting shell 20. When the auxiliary heat dissipation mechanism is working, outside air will first pass through the dustproof mesh plate 29 and then enter the air guide shell 25. The mesh structure of the dustproof mesh plate 29 will filter the air, blocking dust and impurities in the air from entering the outside of the air guide shell 25, allowing only clean air to enter the interior of the mounting shell 20 through the air guide shell 25 and participate in the heat dissipation process of the finned tube 21; As the motor operates for extended periods, the dust filter 29 continuously performs its filtering function, reducing dust accumulation inside the mounting housing 20. This prevents dust from adhering to the surface of the finned tubes 21 and affecting heat exchange efficiency, and also prevents dust from entering components such as the second transmission rod 30 inside the air guide housing 25, thus reducing wear. The screw-fixed design also facilitates easy disassembly and cleaning or replacement by personnel, ensuring the long-term stable operation of the auxiliary heat dissipation mechanism.

[0033] In a further preferred embodiment of the present invention, a baffle 44 is fixed to one side of the bottom shell 13 by screws, and an exhaust hole 45 for venting hot air is provided on the baffle 44.

[0034] In this embodiment, when the motor's cooling circulation mechanism and auxiliary heat dissipation mechanism are working, the rotation of the third fan blade 28 inside the mounting housing 20 will drive airflow. The air absorbs the heat emitted by the finned tube 21 and forms hot air. This hot air will gather towards the baffle 44 on the side of the bottom housing 13 under the push of the airflow, and then be discharged outside the bottom housing 13 through the exhaust hole 45 opened on the baffle 44, thus preventing hot air from accumulating inside the bottom housing 13. As the motor continues to run, the exhaust vent 45 on the baffle 44 continuously exhausts hot air, maintaining the air circulation efficiency inside the bottom shell 13 and indirectly ensuring the heat exchange effect of the finned tube 21. At the same time, the baffle 44 is fixed to the bottom shell 13 with screws, which can prevent external debris from entering the bottom shell 13 and contacting components such as the mounting shell 20 and finned tube 21. The bottom shell 13 can be maintained by removing the screws later, thus taking into account both heat dissipation and protection functions.

[0035] In a further preferred embodiment of the present invention, a sliding plate 46 is fixed on the air inlet of the front end shell 5, a dustproof plate 47 is slidably installed in the sliding plate 46, and an exhaust port is provided on the rear cover 6.

[0036] In this embodiment, when the motor is running, the main shaft 4 drives the first fan blade 7 inside the front housing 5 to rotate. Under the suction of the first fan blade 7, the outside air is first filtered by the dustproof plate 47. The dust and impurities in the air are blocked outside the front housing 5 by the dustproof plate 47. The filtered clean air enters the interior of the front housing 5 to dissipate heat from the front components of the motor. Subsequently, the air that has absorbed heat will flow to the rear end of the motor and finally be discharged outside the motor through the exhaust port on the rear cover 6, forming a through airflow channel. Finally, as the motor operates for a long time, the dustproof plate 47 continuously blocks external impurities from entering the front housing 5, preventing impurities from adhering to the first fan blade 7 or internal motor components and affecting operation. If a large amount of dust accumulates on the surface of the dustproof plate 47, the operator can slide along the slide plate 46 to remove the dustproof plate 47 for cleaning or replacement, which is convenient. The exhaust port of the rear cover 6 ensures that hot air is discharged in a timely manner, preventing hot air from stagnating inside the motor and further improving the stability and safety of heat dissipation at the front of the motor.

[0037] In a further preferred embodiment of the present invention, a base plate 14 is fixed to the bottom of the bottom shell 13, and mounting holes are symmetrically opened on the base plate 14. A sealing plug 12 is threadedly installed in the liquid replenishment port of the cavity 9.

[0038] In this embodiment, when installing the motor, the operator can use bolts and other connecting parts to fix the motor in the preset working position through the symmetrically opened mounting holes on the base plate 14, so that the motor is placed stably and the vibration impact during operation is reduced; at the same time, a sealing plug 12 is threadedly installed at the liquid inlet of the cavity 9 to form a seal on the cavity 9 and prevent coolant leakage. When it is necessary to add coolant to the cavity 9, the operator can rotate and unscrew the sealing plug 12, add an appropriate amount of coolant to the cavity 9 through the replenishment port, and after adding, re-thread the sealing plug 12 into the replenishment port to complete the coolant replenishment operation and ensure that the cooling circulation mechanism has enough coolant to participate in heat exchange. The base plate 14 securely fixes the motor through mounting holes, reducing the risk of loose component connections due to shaking during motor operation; the sealing plug 12 continuously maintains the sealing of the cavity 9, preventing coolant from leaking out of the replenishment port during circulation, while also preventing external impurities from entering the cavity 9 and contaminating the coolant.

[0039] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments: In another embodiment of the present invention, a cleaning mechanism for cleaning the dustproof mesh plate 29 is provided on the mounting shell 20. The cleaning mechanism includes: a mounting frame 33 fixed on the mounting shell 20; a third rotating rod 34 rotatably mounted on the mounting frame 33 via bearings; a brush plate 35 fixed to the bottom end of the third rotating rod 34 and in contact with the dustproof mesh plate 29; and a third transmission rod 36 and a fourth transmission rod 37 rotatably mounted on the mounting frame 33 via bearings. The third transmission rod 36 is connected to the second transmission rod 30 via a meshing fourth bevel tooth 38, the third transmission rod 36 is connected to the fourth transmission rod 37 via a meshing fifth bevel tooth 39, and the fourth transmission rod 37 is connected to the third rotating rod 34 via a meshing sixth bevel tooth 40. During operation, the second transmission rod 30 drives the third transmission rod 36 and the fourth transmission rod 37 to rotate in sequence through bevel gear transmission, which in turn drives the third rotating rod 34 and the brush plate 35 to rotate, thereby realizing automatic cleaning of the dustproof mesh plate 29 and preventing dust from clogging the mesh and affecting heat dissipation.

[0040] In this embodiment, when the motor is running, the second transmission rod 30 rotates and drives the third transmission rod 36 to rotate through the meshing fourth bevel teeth 38. The third transmission rod 36 drives the fourth transmission rod 37 to rotate through the meshing fifth bevel teeth 39. The fourth transmission rod 37 then drives the third rotating rod 34 to rotate through the meshing sixth bevel teeth 40, so that the brush plate 35 rotates synchronously with the third rotating rod 34 and comes into contact with and rubs against the surface of the dustproof mesh plate 29. During rotation, the brush plate 35 sweeps away dust adhering to the surface of the dustproof mesh plate 29, reducing dust clogging the mesh and ensuring that outside air can smoothly enter the mounting housing 20. This mechanism is driven by the motor itself, requiring no additional power source, and uses multi-stage bevel gear transmission to achieve power transmission and speed adjustment, which helps maintain the long-term stable operation of the auxiliary heat dissipation mechanism.

[0041] In another embodiment of the present invention, a coolant exchange mechanism is provided on the return pipe 22. The coolant exchange mechanism includes: an exchange pipe 41 fixedly connected to the return pipe 22 via an adapter, and two valves 42 respectively provided on the exchange pipe 41 and the return pipe 22. When the coolant needs to be replaced, the valve 42 on the return pipe 22 is closed, and the valve 42 on the exchange pipe 41 is opened, allowing the coolant to be discharged through the exchange pipe 41.

[0042] In this embodiment, when the coolant needs to be replaced, the operator first closes the valve 42 on the return pipe 22 to block the normal circulation path of the coolant, and then opens the valve 42 on the replacement pipe 41, allowing the coolant in the cavity 9 and circulation pipe to be discharged through the replacement pipe 41 under its own flow pressure. After the discharge is completed, new coolant can be injected through the replacement pipe 41. After the replacement is completed, the valve 42 on the replacement pipe 41 is closed, and the valve 42 on the return pipe 22 is opened to restore normal circulation. This coolant replacement mechanism can complete the coolant replacement without disassembling other parts of the cooling circulation mechanism, which simplifies the operation process and reduces the risk of coolant leakage during the replacement process. The independent control of the two valves 42 ensures that the overall structural integrity of the cooling system is not affected during the replacement.

[0043] In summary, compared with related technologies, the main shaft 4 drives the first fan blade 7 and the second fan blade 8 to form basic airflow for heat dissipation. At the same time, the main shaft 4 drives the first transmission rod 23 and the first rotating rod 16 to drive the impeller 17, which pushes the coolant in the cavity 9 through the liquid extraction pipe 18 and the liquid outlet pipe 19 into the finned tube 21 for heat exchange, and then completes the circulation through the return pipe 22. The heat exchange is enhanced by the fins 10 on the outer wall of the shell 1 and the baffles 11 inside the cavity 9. In addition, the auxiliary heat dissipation mechanism drives the third fan blade 28 through the second transmission rod 30 and the second rotating rod 27 to accelerate the heat dissipation of the finned tube 21. The dustproof mesh plate 29 and the dustproof plate 47 are combined with the dustproof mesh plate 47 for protection and cleaning, and the liquid exchange mechanism is designed for easy maintenance. Overall, the system achieves a dual cooling effect of airflow heat dissipation and liquid circulation heat dissipation, effectively improving heat dissipation efficiency and alleviating the heat dissipation bottleneck of high power density motors.

[0044] It is worth noting that the circuits, electronic components, and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0045] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A motor with a cooling function, characterized in that, include: The housing includes an excitation group on its inner wall, a rotor group inside the excitation group, and fins on its outer wall. A main shaft is mounted on the rotor group. A front end shell and a rear end cover are fixed to the front and rear of the housing respectively. A cooling assembly is linked, including a first fan blade fixed to the main shaft within the front end shell and a second fan blade fixed to the tail end of the main shaft. A cavity for holding coolant is formed in the housing, with several baffles alternately fixed within the cavity. A cooling circulation mechanism is provided on the housing to pump coolant into the cavity. The cooling circulation mechanism includes a liquid guide shell fixed below the housing, a first rotating rod rotatably mounted within the liquid guide shell via a sealed bearing, an impeller fixed to the first rotating rod, a bottom shell fixed to the bottom of the housing, and a mounting shell within the bottom shell. A finned tube is provided within the mounting shell. A first transmission rod rotatably mounted within the housing via a sealed bearing is connected to the main shaft via a fixedly mounted seventh bevel gear. The first transmission rod and the first rotating rod are also connected via a fixedly mounted first bevel gear. The cooling circulation mechanism further includes: a liquid extraction pipe with its inlet end connected to the cavity and its outlet end connected to the liquid guide shell; a liquid outlet pipe with its inlet end connected to the liquid guide shell and its outlet end connected to the liquid inlet end of the finned tube; and a return pipe with its inlet end connected to the liquid outlet end of the finned tube and its outlet end connected to the cavity. The mounting housing is provided with an auxiliary heat dissipation mechanism for dissipating heat from the finned tube. The auxiliary heat dissipation mechanism includes: an air guide shell fixed to the top of the mounting housing, a plurality of air inlets opened on the top of the mounting housing, a second rotating rod rotatably mounted in the mounting housing via a bearing, and a third fan blade fixed on the second rotating rod. The auxiliary heat dissipation mechanism further includes: a second transmission rod rotatably mounted in the air guide shell via a sealed bearing; the second transmission rod is connected to the first transmission rod via a meshing second bevel gear; and the second transmission rod is connected to the second rotating rod via a meshing third bevel gear.

2. The motor with cooling function as described in claim 1, characterized in that, The housing has an inlet hole, and a waterproof connector is installed in the inlet hole via internal threads.

3. The motor with cooling function as described in claim 1, characterized in that, A dustproof mesh plate is fixed to the air guide shell with screws to prevent external dust from entering the interior of the mounting shell.

4. The motor with cooling function as described in claim 1, characterized in that, A baffle is fixed to one side of the bottom shell by screws, and an exhaust hole for venting hot air is provided on the baffle.

5. The motor with cooling function as described in claim 1, characterized in that, A sliding plate is fixed on the air inlet of the front end shell, and a dustproof plate is slidably installed inside the sliding plate. An exhaust port is provided on the rear cover.

6. The motor with cooling function as described in claim 1, characterized in that, A base plate is fixed to the bottom of the bottom shell, and mounting holes are symmetrically opened on the base plate.

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