An ultra-high-speed lightweight permanent magnet direct-drive motor

Abstract

The present invention discloses an ultra-high-speed, lightweight, permanent-magnet direct-drive motor, belonging to the field of electric motors. The motor comprises a housing, a rotor, and a stator. The motor also includes: an outer cover fixedly mounted on the outer wall of the housing; a liquid spray pipe and a liquid discharge pipe fixedly connected to the top and bottom of the outer cover, respectively; a first nozzle fixedly mounted at the lower end of each of the liquid spray pipe and the liquid discharge pipe, the first nozzle being perpendicular to the axis of the housing; and a counteracting component disposed on the housing for counteracting vibrations generated by the housing. The motor can partially counteract the vibration and noise of the motor, while the counteracting spring also increases the heat dissipation area of the housing, thereby ensuring the heat dissipation efficiency of the motor.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to an ultra-high-speed lightweight permanent magnet direct-drive motor. Background Art

[0002] The ultra-high-speed, lightweight permanent magnet direct-drive motor, that is, the motor can be directly connected to the load without passing through the speed increaser, a transmission device. It has the advantages of small size, light weight, high system reliability and high efficiency, and realizes the integration, lightweight and high efficiency of the electric drive system.

[0003] The working principle of high-speed permanent magnet direct-drive motor is based on the law of electromagnetic induction and the Lorentz force principle. Its core lies in utilizing the interaction between the constant magnetic field generated by permanent magnets and the rotating magnetic field generated by the current in the stator winding to directly generate electromagnetic torque on the motor rotor and drive the load to rotate.

[0004] However, since the rotation speed of high-speed permanent magnet direct-drive motors can reach tens of thousands or even hundreds of thousands of revolutions per minute, and since high-speed permanent magnet motors are small in size and difficult to dissipate heat, they are easily affected by armature reaction demagnetization and rotor overheating, which can easily cause irreversible demagnetization.

[0005] In addition, the high-speed permanent magnet direct-drive motor has a very high excitation frequency due to its high speed. In addition, the motor is slender, light in mass, has relatively small damping, and has rich vibration modes, which makes it easy to generate vibrations and noise of various frequencies.

[0006] To this end, it is necessary to design an ultra-high-speed, lightweight permanent magnet direct-drive motor with low noise and efficient heat dissipation to make up for the defects in the existing technology. Summary of the Invention

[0007] The purpose of the present invention is to solve the problem in the prior art that ultra-high-speed lightweight permanent magnet direct-drive motors are prone to overheating and demagnetization and generate obvious noise, and to propose an ultra-high-speed lightweight permanent magnet direct-drive motor.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] An ultra-high-speed, lightweight permanent magnet direct-drive motor comprises a housing, a rotor, and a stator, and further comprises: an outer cover fixedly sleeved on the outer wall of the housing, wherein a spray pipe and a drain pipe are fixedly connected to the top and bottom of the inner portion of the outer cover, respectively, and a first nozzle is fixedly mounted at the lower end of each of the spray pipe and the drain pipe, wherein the first nozzle is perpendicular to the axis of the housing; and a counteracting component provided on the housing, the counteracting component being used to counteract vibrations generated by the housing.

[0010] In order to reduce the vibration and noise generated by the motor, preferably, the offsetting component includes a plurality of bosses fixedly connected to the inner wall of the shell, and mounting grooves are formed between adjacent bosses. The plurality of stators are respectively fixedly installed in the plurality of mounting grooves, wherein the outer wall of the shell is provided with a groove extending into the boss, and a plurality of offsetting springs arranged at equal intervals are fixedly installed in each of the grooves.

[0011] In order to allow the coolant to soak all the offset springs, further, the outer wall of the shell is fixedly connected to a plurality of partitions arranged at equal intervals, and the plurality of offset springs in each of the grooves are respectively arranged in the gaps between the plurality of partitions.

[0012] In order to dissipate heat from the rotor, preferably, the tail of the outer shell is fixedly connected with an end cover, the axial end surface of the end cover is provided with an exhaust groove, the circumferential outer wall of the end cover is provided with an air intake groove, and a filter plate is installed in the air intake groove, wherein one end of the rotor extends into the end cover, the axial end of the rotor is fixedly installed with a heat dissipation fan blade located in the end cover, and a mesh plate is fixedly installed in the exhaust groove.

[0013] In order to enable the coolant to continuously dissipate heat, a curved heat pipe is further fixedly installed in the end cover, and coolant is provided in the curved heat pipe. Both ends of the curved heat pipe are fixedly connected with connecting pipes, wherein the ends of the two connecting pipes are respectively connected to the spray pipe and the drain pipe, and the output end of the heat dissipation fan blade faces the curved heat pipe. One end of the curved heat pipe is provided with a driving part for driving the flow of coolant.

[0014] In order to make the coolant circulate continuously, the driving part further includes a rotating tube rotatably installed at one end of the curved heat pipe, and the inner wall of the rotating tube is fixedly installed with a circulating fan blade, wherein the heat dissipation fan blade is fixedly connected with a circular ring around it, and a driving gear is fixedly installed on the circular ring, and a driven gear meshing with the driving gear is fixedly installed on the outer wall of the rotating tube.

[0015] In order to improve the spraying range of the first nozzle, further, the inner wall of the outer cover is fixedly connected to a support, the spray pipe and the discharge pipe are both installed on the support in a transverse sliding manner, an arc rod is fixedly connected between the spray pipe and the discharge pipe, and a swinging part is provided in the outer cover to drive the spray pipe and the discharge pipe to swing back and forth.

[0016] In order to make the second nozzle and the first nozzle intermittently spray coolant, further, the swinging part includes a limit plate fixedly connected to one end of the spray pipe, and the limit plate is elastically connected to the inner wall of the outer cover through a shaking spring, wherein the lower ends of the spray pipe and the drain pipe are fixedly installed with an inclined second nozzle, and the driving gear is an incomplete gear.

[0017] In order to increase the heat dissipation area of the outer cover, preferably, a heat dissipation plate is fixedly connected to the outer wall of the outer cover, and the heat dissipation plate is parallel to the axis of the outer cover.

[0018] In order to prevent the coolant from staying in the groove for a long time, the boss is further formed integrally with the shell, and the cross-section of the groove is semicircular.

[0019] Compared with the prior art, the present invention provides an ultra-high-speed, lightweight, permanent magnet direct-drive motor with the following beneficial effects:

[0020] 1. This ultra-high-speed, lightweight permanent magnet direct-drive motor can offset some of the motor's vibration and noise through the offset spring. At the same time, the offset spring can also increase the heat dissipation area of the casing to ensure the heat dissipation efficiency of the motor. Because the offset spring is installed in the groove, it can improve the noise reduction and heat dissipation effect of the motor while retaining the motor's slim size.

[0021] 2. This ultra-high-speed, lightweight permanent magnet direct-drive motor rotates its rotor to drive the cooling fan blades, which in turn draw air from the end cover through the air inlet slots and discharge it through the exhaust slots. The airflow removes some of the heat from the rotor to dissipate heat and reduce the probability of demagnetization.

[0022] 3. This ultra-high-speed, lightweight permanent magnet direct-drive motor sprays coolant onto the top of the housing through the first nozzle. The coolant then flows along the outer wall of the housing to its bottom, effectively dissipating heat from the housing. The coolant flowing along the outer wall of the housing also reduces vibration and noise generated by the housing.

[0023] 4. This ultra-high-speed, lightweight permanent magnet direct-drive motor wets the offset spring with coolant. The offset spring can offset the vibration of the housing through the coolant, thereby reducing the noise of the motor. The vibration offset spring can also allow the coolant to fully contact it, indirectly improving the heat dissipation efficiency of the motor.

[0024] 5. This ultra-high-speed, lightweight permanent magnet direct-drive motor blows air into the exhaust slots through the cooling fan blades. The airflow passes through the gaps in the curved heat pipes, dissipating heat from the curved heat pipes. The curved heat pipes, in turn, dissipate heat from the internal coolant, allowing the coolant to continuously and efficiently dissipate heat from the motor.

[0025] 6. This ultra-high-speed, lightweight permanent magnet direct-drive motor drives the driven gear to rotate intermittently through the driving gear. The driven gear causes the spray pipe to swing back and forth. The first nozzle and the second nozzle at the lower end of the spray pipe can spray the coolant more comprehensively to the top of the casing, preventing uneven heating in local areas and indirectly improving the heat dissipation effect of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a schematic diagram of the axonometric structure of an ultra-high-speed lightweight permanent magnet direct-drive motor proposed in the present invention;

[0027] Figure 2 This is a schematic diagram of the axonometric cross-section structure of an ultra-high-speed lightweight permanent magnet direct-drive motor proposed in the present invention;

[0028] Figure 3 This is a partial axonometric structure diagram of an ultra-high-speed lightweight permanent magnet direct-drive motor proposed in this invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the axonometric structure of the housing of an ultra-high-speed, lightweight permanent magnet direct-drive motor proposed in the present invention;

[0030] Figure 5 This is a schematic diagram of a partially cutaway axonometric structure of an ultra-high-speed, lightweight permanent magnet direct-drive motor proposed in the present invention;

[0031] Figure 6 This is a partial axonometric structure diagram of an ultra-high-speed lightweight permanent magnet direct-drive motor proposed in this invention. Figure 2 ;

[0032] Figure 7 This is a partial axonometric structure diagram of an ultra-high-speed lightweight permanent magnet direct-drive motor proposed in this invention. Figure 3 ;

[0033] Figure 8 This is a schematic diagram of the structure of an ultra-high-speed lightweight permanent magnet direct-drive motor proposed by the present invention;

[0034] Figure 9 This invention proposes an ultra-high-speed lightweight permanent magnet direct-drive motor Figure 5 Schematic diagram of the structure of part A.

[0035] In the figure: 1. outer shell; 2. rotor; 3. stator; 4. outer cover; 5. offset spring; 6. spray pipe; 7. first nozzle; 8. second nozzle; 9. drain pipe; 10. boss; 11. groove; 12. partition; 13. mounting groove; 14. heat sink; 15. end cover; 16. exhaust groove; 17. mesh plate; 18. air inlet groove; 19. filter plate; 20. curved heat pipe; 21. rotating pipe; 22. driven gear; 23. circular ring; 24. driving gear; 25. cooling fan blade; 26. connecting pipe; 27. support; 28. arc rod; 29. limit plate; 30. shaking spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0038] Example 1:

[0039] Reference Figures 1-9 An ultra-high-speed lightweight permanent magnet direct-drive motor includes a housing 1, a rotor 2 and a stator 3. The stator 3 is installed on the inner wall of the housing 1, and the rotor 2 is installed in the housing 1. The rotor 2 mainly includes an iron core located in the center, a permanent magnet bonded to the outer peripheral wall of the iron core by an adhesive layer, and a sheath sleeved on the permanent magnet. The stator 3 mainly consists of a stator winding and a stator iron core.

[0040] The ultra-high-speed lightweight permanent magnet direct drive motor further comprises: a cylindrical outer cover 4, which is fixedly sleeved on the outer wall of the housing 1, wherein the top and bottom of the outer cover 4 are respectively fixedly connected to the spray pipe 6 and the drain pipe 9 (refer to Figure 1 、 Figure 2 as well as Figure 5 ), the lower ends of the spray pipe 6 and the drain pipe 9 are fixedly installed with a first nozzle 7, the first nozzle 7 is perpendicular to the axis of the shell 1, and the first nozzle 7 is used to spray coolant; a counteracting component is arranged on the shell 1, and the counteracting component is used to offset the vibration generated by the shell 1.

[0041] Specifically, when in use, the spray pipe 6 can spray the coolant to the top of the shell 1. At this time, the coolant will flow along the outer wall of the shell 1 to its bottom, and will eventually be stored at the inner bottom of the outer cover 4. The drain pipe 9 will absorb the coolant at the inner bottom of the outer cover 4 through the first nozzle 7 and discharge the coolant from the outer cover 4. When the coolant flows downward along the outer wall of the shell 1, the heat on the shell 1 can be transferred to the coolant, thereby completing the efficient heat dissipation of the shell 1. In addition, since there is a gap between the inner wall of the outer cover 4 and the shell 1, the coolant flowing on the outer wall of the shell 1 can also reduce the vibration and noise emitted by the shell 1.

[0042] The outer wall of the outer cover 4 is fixedly connected with a heat sink 14 , which is parallel to the axis of the outer cover 4 . The heat sink 14 on the outer wall of the outer cover 4 can improve the heat dissipation efficiency of the outer cover 4 , thereby indirectly improving the heat dissipation efficiency of the motor.

[0043] Example 2:

[0044] Reference Figure 2 and Figure 4, which is basically the same as Example 1, and further discloses a specific implementation scheme of the offset component.

[0045] The offsetting component in the ultra-high-speed lightweight permanent magnet direct-drive motor includes a plurality of bosses 10 fixedly connected to the inner wall of the shell 1. The number of bosses 10 is 6-9, and the preferred number in this application is 6, which is the same as the number of stators 3. Mounting grooves 13 are formed between adjacent bosses 10, and multiple stators 3 are respectively fixedly installed in the multiple mounting grooves 13 and offset against the outer walls of the bosses 10; wherein, the outer wall of the shell 1 is provided with a groove 11 extending into the boss 10, and each groove 11 is fixedly installed with a plurality of offsetting springs 5 arranged at equal intervals. The number of offsetting springs 5 in the groove 11 is 6-12, and the preferred number in this application is 9.

[0046] Specifically, during use, the heat generated by the motor will be transferred to the housing 1, and the housing 1 will transfer the vibration and heat to the offset spring 5. The offset spring 5 can offset part of the vibration and noise of the motor. At the same time, the offset spring 5 can also increase the heat dissipation area of the housing 1 to ensure the heat dissipation efficiency of the motor. Since the offset spring 5 is installed in the groove 11, the noise reduction and heat dissipation effects of the motor can be improved while retaining the small size of the motor. The boss 10 can transfer heat to the offset spring 5 more efficiently to improve the heat dissipation efficiency of the stator 3. In practice, the free end of the offset spring 5 is in contact with the inner wall of the outer cover 4 or a small gap is retained, so that the effect of the offset spring 5 in offsetting the vibration and noise of the motor is more obvious.

[0047] The outer wall of the above-mentioned shell 1 is fixedly connected with a plurality of partitions 12 arranged at equal intervals. The number of partitions 12 is 6-12, and the preferred number in this application is 8. The multiple offset springs 5 in each groove 11 are respectively arranged in the gaps between the multiple partitions 12; the partitions 12 can separate the coolant sprayed by the first nozzle 7 to ensure that each offset spring 5 can be soaked in the coolant, and at the same time can increase the heat dissipation area of the shell 1, so as to significantly improve the heat dissipation efficiency of the motor.

[0048] The boss 10 is integrally formed with the housing 1 , and the cross-section of the groove 11 is semicircular. The integrally formed boss 10 can significantly improve the heat conduction efficiency, while the semicircular groove 11 can prevent the coolant from being unable to be smoothly discharged from the groove 11 .

[0049] Example 3:

[0050] Reference Figure 1-Figure 2 as well as Figure 5-Figure 8 , which is basically the same as the second embodiment, and furthermore, a specific implementation scheme for heat dissipation of the rotor 2 is specifically added.

[0051] The tail of the above-mentioned shell 1 is fixedly connected to the end cover 15, the axial end surface of the end cover 15 is provided with an exhaust groove 16, the circumferential outer wall of the end cover 15 is provided with an air intake groove 18, and a filter plate 19 for filtering dust is installed in the air intake groove 18; wherein, one end of the rotor 2 extends into the end cover 15, and the axial end of the rotor 2 is fixedly installed with a heat dissipation fan blade 25 located in the end cover 15, and the exhaust groove 16 is fixedly installed with a mesh plate 17 for protecting and isolating the heat dissipation fan blade 25.

[0052] Specifically, during motor operation, the rotating rotor 2 drives the heat dissipation fan blades 25 to rotate, and the heat dissipation fan blades 25 cause the end cover 15 to draw air through the air inlet slot 18 and then discharge the air through the exhaust slot 16. When the air flow passes through the end cover 15, the air flow can take away some of the temperature on the rotor 2 to dissipate heat from the rotor 2, thereby reducing the probability of demagnetization. When the air inlet slot 18 draws in air, the filter plate 19 can prevent dust from contaminating the heat dissipation fan blades 25. In practice, because the air inlet slot 18 is equipped with a filter plate 19 for filtering dust, the air passing through the air inlet slot 18 will enter the end cover 15 through the mesh of the filter plate 19; and because the mesh plate 17 is fixedly installed in the exhaust slot 16, the air passing through the exhaust slot 16 will be discharged from the end cover 15 through the mesh on the mesh plate 17.

[0053] Example 4:

[0054] Reference Figure 1-Figure 2 as well as Figure 5-Figure 8 , which is basically the same as Example 3, and further, a specific implementation plan for circulating coolant is specifically added.

[0055] A curved heat pipe 20 is fixedly installed in the above-mentioned end cover 15. The appearance of the curved heat pipe 20 is a reciprocatingly twisted serpentine shape and is made of copper with good thermal conductivity. A coolant is provided in the curved heat pipe 20. The coolant can use viscous cooling oil. Both ends of the curved heat pipe 20 are fixedly connected to connecting pipes 26. Among them, the ends of the two connecting pipes 26 are respectively connected to the spray pipe 6 and the drain pipe 9, and the output end of the heat dissipation fan blade 25 faces the curved heat pipe 20. One end of the curved heat pipe 20 is provided with a driving part for driving the flow of coolant; the driving part includes a rotating tube 21 rotatably installed at one end of the curved heat pipe 20, and the outer wall of the rotating end of the rotating tube 21 is installed with a sealing ring to improve the sealing performance, and the inner wall of the rotating tube 21 is fixedly installed with a circulating fan blade, which is equivalent to the impeller in the water pump. When the rotating tube 21 drives the circulating fan blade to rotate, the rotating tube 21 has a working principle similar to that of the circulating pump, and is used to continuously transport liquid; wherein, the heat dissipation fan blade 25 is fixedly connected with a circular ring 23 around which a driving gear 24 is fixedly installed, and the outer wall of the rotating tube 21 is fixedly installed with a driven gear 22 meshing with the driving gear 24.

[0056] Specifically, when the heat dissipation fan blades 25 rotate, the heat dissipation fan blades 25 will drive the ring 23 to rotate, and the ring 23 will drive the driving gear 24 to rotate, and the driving gear 24 will drive the driven gear 22 to rotate, and the driven gear 22 will drive the rotating tube 21 to rotate, and the rotating tube 21 will drive the internal circulation fan blades to rotate. The rotating circulation fan blades will make the coolant in the curved heat pipe 20 continue to flow in a principle similar to a water pump. The flowing coolant will be transported to the spray pipe 6 through the connecting pipe 26, and the spray pipe 6 will spray the coolant to the top of the outer shell 1 through the first nozzle 7. At this time, the coolant will flow along the outer wall of the outer shell 1 to its bottom, and will eventually be stored at the inner bottom of the outer cover 4. The drain pipe 9 will absorb the coolant at the inner bottom of the outer cover 4 through the first nozzle 7, and transport it back to the curved heat pipe 20 through the connecting pipe 26.

[0057] When the heat dissipation fan blades 25 blow air toward the exhaust slots 16, the airflow will also pass through the gaps in the curved heat pipes 20, thereby dissipating heat from the curved heat pipes 20. The curved heat pipes 20 will then dissipate heat from the coolant inside, so that the coolant can continue to dissipate heat from the motor efficiently. Since the curved heat pipes 20 are serpentine in shape, the heat dissipation area of the coolant in the curved heat pipes 20 can be significantly improved. After multiple tests and verifications by the inventors, the temperature of the coolant itself drops significantly after passing through the curved heat pipes 20. After heat transfer, the coolant can reduce the temperature of the motor by 10-15 degrees.

[0058] In order to ensure the cooling effect of the coolant on the motor, the motor should be Figure 1 The motor is installed in the direction shown, that is, the motor axis needs to be parallel to the horizontal plane. The provision of the partition 12 can prevent the coolant from flowing downward at an angle, and can promote the coolant to flow evenly on the housing 1 as much as possible, so that the motor can also be installed in a vertical direction, but the effect is weaker than the horizontal direction. Therefore, in order to ensure the heat dissipation effect of the motor, the motor installation direction in this application is preferably horizontal.

[0059] Embodiment 5:

[0060] Reference Figure 6 、 Figure 8 as well as Figure 9 , which is basically the same as Example 4, and further, a specific implementation plan for increasing the coolant coverage area is specifically added.

[0061] The inner wall of the above-mentioned outer cover 4 is fixedly connected with a support 27, and the spray pipe 6 and the drain pipe 9 are both slidably mounted on the support 27 laterally. The spray pipe 6 can slide left and right on the support 27, and an arc rod 28 is fixedly connected between the spray pipe 6 and the drain pipe 9. A swinging part for driving the spray pipe 6 and the drain pipe 9 to swing back and forth is provided in the outer cover 4, and the swinging part includes a limit plate 29 fixedly connected to one end of the spray pipe 6, and the limit plate 29 is elastically connected to the inner wall of the outer cover 4 by a shaking spring 30; wherein, the lower ends of the spray pipe 6 and the drain pipe 9 are fixedly mounted with a second nozzle 8 set obliquely, the driving gear 24 is an incomplete gear, and the gear teeth on the driving gear 24 are divided into 4 groups to 6 groups, and the preferred number of this application is 6 groups.

[0062] Specifically, when the coolant enters the spray pipe 6, the spray pipe 6 will also spray coolant through the second nozzle 8. Since the second nozzle 8 is tilted on the spray pipe 6, the reaction force of the coolant will cause the spray pipe 6 to deviate horizontally, and the coolant can be sprayed to the top of the housing 1 more comprehensively. Since the driving gear 24 is an incomplete gear, the gear teeth on the driving gear 24 will indirectly sweep the driven gear 22, and the driven gear 22 will rotate intermittently, so the first nozzle 7 and the second nozzle 8 will spray coolant intermittently. When the second nozzle 8 sprays coolant, the spray pipe 6 will deviate. When the second nozzle 8 stops spraying coolant, the shaking spring 30 will drive the spray pipe 6 to deviate and reset in the opposite direction through the limit plate 29, so that the intermittently rotating driven gear 22 will cause the spray pipe 6 to swing back and forth, and the first nozzle 7 and the second nozzle 8 at the lower end of the spray pipe 6 can spray coolant to the top of the housing 1 more comprehensively, preventing uneven heating in local positions, and indirectly improving the heat dissipation effect of the motor.

[0063] When the spray pipe 6 swings back and forth, the spray pipe 6 will drive the drain pipe 9 to swing synchronously through the arc rod 28, and the drain pipe 9 can absorb the coolant at the bottom of the outer cover 4 more comprehensively. In order to improve the efficiency of absorbing the coolant, the first nozzle 7 and the second nozzle 8 at the lower end of the drain pipe 9 can adopt liquid suction holes in the form of through holes.

[0064] When this ultra-high-speed lightweight permanent magnet direct-drive motor is in use, the heat generated by the motor will be transferred to the casing 1, and the casing 1 will transfer the vibration and heat to the offset spring 5. The offset spring 5 can offset part of the vibration and noise of the motor. At the same time, the offset spring 5 can also increase the heat dissipation area of the casing 1 to ensure the heat dissipation efficiency of the motor. Since the offset spring 5 is installed in the groove 11, the noise reduction and heat dissipation effects of the motor can be improved while retaining the small size of the motor; the rotating rotor 2 will drive the heat dissipation fan blades 25 to rotate, and the heat dissipation fan blades 25 will cause the end cover 15 to draw air through the air inlet slot 18, and then discharge the air through the exhaust slot 16. When the airflow passes through the end cover 15, the airflow can take away part of the temperature on the rotor 2 to dissipate heat for the rotor 2, thereby reducing the probability of demagnetization.

[0065] When the heat dissipation fan blades 25 rotate, the heat dissipation fan blades 25 will drive the ring 23 to rotate, the ring 23 will drive the driving gear 24 to rotate, the driving gear 24 will drive the driven gear 22 to rotate, the driven gear 22 will drive the rotating tube 21 to rotate, and the rotating tube 21 will drive the internal circulation fan blades to rotate. The rotating circulation fan blades will cause the coolant in the curved heat pipe 20 to flow continuously, and the flowing coolant will be transported to the spray pipe 6 through the connecting pipe 26. The spray pipe 6 will spray the coolant to the top of the shell 1 through the first nozzle 7. At this time, the coolant will flow along the outer wall of the shell 1 to its bottom, and will eventually be stored in the inner bottom of the outer cover 4. The drain pipe 9 will absorb the coolant at the inner bottom of the outer cover 4 through the first nozzle 7, and transport it back to the curved heat pipe 20 through the connecting pipe 26. When flowing downward along the outer wall of the shell 1, the heat on the shell 1 can be transferred to the coolant, thereby completing the efficient heat dissipation of the shell 1, and because there is a gap in the inner wall of the outer cover 4, the coolant flowing on the outer wall of the shell 1 can also reduce the vibration and noise emitted by the shell 1. During this period, the offset spring 5 can not only increase the heat dissipation area of the shell 1, but also when the coolant wets the offset spring 5, the offset spring 5 can also offset the vibration of the shell 1 through the coolant. Specifically, it can be understood that the coolant acts as a medium to damp or absorb vibration, which will cause the vibration energy to gradually decrease, and the final sound will sound weakened or disappear, thereby making the noise of the motor smaller, and the vibrating offset spring 5 can make the coolant fully contact with it, indirectly improving the heat dissipation efficiency of the motor.

[0066] When the coolant enters the spray pipe 6, the spray pipe 6 will also spray coolant through the second nozzle 8. Since the second nozzle 8 is tilted on the spray pipe 6, the reaction force of the coolant will cause the spray pipe 6 to deviate horizontally, and the coolant can be sprayed to the top of the housing 1 more comprehensively. Since the driving gear 24 is an incomplete gear, the gear teeth on the driving gear 24 will indirectly sweep the driven gear 22, and the driven gear 22 will rotate intermittently, so the first nozzle 7 and the second nozzle 8 will spray coolant intermittently. When the second nozzle 8 sprays coolant, the spray pipe 6 will deviate. When the second nozzle 8 stops spraying coolant, the shaking spring 30 will drive the spray pipe 6 to deviate and reset in the opposite direction through the limit plate 29, so the intermittently rotating driven gear 22 will cause the spray pipe 6 to swing back and forth, and the first nozzle 7 and the second nozzle 8 at the lower end of the spray pipe 6 can spray coolant to the top of the housing 1 more comprehensively, preventing uneven heating in local positions and indirectly improving the heat dissipation effect of the motor.

[0067] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An ultra-high-speed lightweight permanent magnet direct-drive motor, comprising a housing (1), a rotor (2) and a stator (3), characterized in that: Also includes: The outer cover (4) is fixedly mounted on the outer wall of the outer shell (1). The top and bottom of the outer cover (4) are respectively fixedly connected with a liquid spray pipe (6) and a liquid discharge pipe (9), and the lower ends of the liquid spray pipe (6) and the liquid discharge pipe (9) are both fixedly mounted with a first nozzle (7), and the first nozzle (7) is perpendicular to the axis of the outer shell (1); a counteracting component, arranged on the housing (1), the counteracting component being used to counteract vibrations generated by the housing (1); The offset component comprises a plurality of bosses (10) fixedly connected to the inner wall of the housing (1), mounting grooves (13) are formed between adjacent bosses (10), and the plurality of stators (3) are respectively fixedly mounted in the plurality of mounting grooves (13). The outer wall of the housing (1) is provided with a groove (11) extending into the boss (10), and a plurality of offset springs (5) arranged at equal intervals are fixedly installed in each of the grooves (11); The tail of the housing (1) is fixedly connected to an end cover (15), an axial end surface of the end cover (15) is provided with an exhaust groove (16), a circumferential outer wall of the end cover (15) is provided with an air intake groove (18), and a filter plate (19) is installed in the air intake groove (18). One end of the rotor (2) extends into the end cover (15), a heat dissipation fan blade (25) located in the end cover (15) is fixedly mounted on the shaft end of the rotor (2), and a mesh plate (17) is fixedly mounted in the exhaust slot (16); A curved heat pipe (20) is fixedly installed in the end cover (15), a coolant is provided in the curved heat pipe (20), and connecting pipes (26) are fixedly connected to both ends of the curved heat pipe (20). The ends of the two connecting pipes (26) are respectively connected to the liquid spray pipe (6) and the liquid discharge pipe (9), the output end of the heat dissipation fan blade (25) faces the curved heat pipe (20), and one end of the curved heat pipe (20) is provided with a driving part for driving the flow of the coolant; The driving part comprises a rotating tube (21) rotatably mounted on one end of the curved heat pipe (20), and a circulating fan blade is fixedly mounted on the inner wall of the rotating tube (21). The heat dissipation fan blade (25) is fixedly connected to a circular ring (23) on all sides, a driving gear (24) is fixedly mounted on the circular ring (23), and a driven gear (22) meshingly connected to the driving gear (24) is fixedly mounted on the outer wall of the rotating tube (21).

2. The ultra-high-speed lightweight permanent magnet direct-drive motor according to claim 1, characterized in that: The outer wall of the housing (1) is fixedly connected to a plurality of partitions (12) arranged at equal intervals, and the plurality of offset springs (5) in each of the grooves (11) are respectively arranged in the gaps between the plurality of partitions (12).

3. The ultra-high-speed lightweight permanent magnet direct-drive motor according to claim 1, characterized in that: The inner wall of the outer cover (4) is fixedly connected to a support (27), and the liquid spraying pipe (6) and the liquid discharge pipe (9) are both laterally slidably mounted on the support (27). An arc-shaped rod (28) is fixedly connected between the liquid spraying pipe (6) and the liquid discharge pipe (9), and a swinging portion for driving the liquid spraying pipe (6) and the liquid discharge pipe (9) to swing back and forth is provided in the outer cover (4).

4. The ultra-high-speed lightweight permanent magnet direct-drive motor according to claim 3, characterized in that: The swinging portion includes a limit plate (29) fixedly connected to one end of the liquid spraying pipe (6), and the limit plate (29) is elastically connected to the inner wall of the outer cover (4) via a shaking spring (30). The lower ends of the liquid spray pipe (6) and the liquid discharge pipe (9) are both fixedly mounted with an inclined second spray head (8), and the driving gear (24) is an incomplete gear.

5. The ultra-high-speed lightweight permanent magnet direct-drive motor according to claim 1, characterized in that: A heat dissipation plate (14) is fixedly connected to the outer wall of the outer cover (4), and the heat dissipation plate (14) is parallel to the axis of the outer cover (4).

6. The ultra-high-speed lightweight permanent magnet direct-drive motor according to claim 1, characterized in that: The boss (10) and the housing (1) are integrally formed, and the cross-sectional shape of the groove (11) is semicircular.

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