Energy-saving self-excitation asynchronous motor with heat dissipation optimization

Abstract

The application discloses a heat dissipation optimized energy-saving self-excitation asynchronous motor, which comprises a shell, a stator and a rotor, the stator is detachably and rigidly connected in the shell, and the rotor is rotatably connected to the shell, the stator comprises an output shaft, the shell is provided with a controllable opening and closing first ventilation mechanism and a second ventilation mechanism, the output shaft penetrates through the shell in the axial direction, the output shaft is provided with a ventilation mechanism, the ventilation mechanism is located in the shell and comprises a supporting disc, a sliding seat, a first vortex fan blade and a first tension spring, as the rotating speed of the rotor increases, each sliding seat is away from each other under the action of centrifugal force, so that each first vortex fan blade gradually extends compared with the supporting disc, and then the air supply power of the first vortex fan blade is greatly increased, and correspondingly, when the rotating speed of the rotor decreases, each sliding seat is close to each other under the action of the elastic tension of the first tension spring, so that each first vortex fan blade gradually shrinks compared with the supporting disc.

Description

Technical Field

[0001] This invention relates to a self-excited asynchronous motor, and more particularly to a heat dissipation optimized energy-saving self-excited asynchronous motor. Background Technology

[0002] Self-excited motors rely on the stator absorbing reactive power from the power grid to establish a rotating magnetic field. Their rotor current is generated through electromagnetic induction, requiring no external DC excitation. However, motors generate a significant amount of heat during operation. If this heat is not dissipated promptly, it can reduce efficiency and increase energy consumption, or even cause structural damage and affect usability. Therefore, effective heat dissipation is crucial for achieving energy savings. Currently, self-excited asynchronous motors primarily use air cooling, mainly due to its low cost and ease of use. However, motors using air cooling typically have the following drawbacks: First, the ventilation mechanism cannot automatically open and close based on the motor's operation without electronic control. This makes it easy for unnecessary airflow to occur when the motor is not running, leading to the unnecessary entry of dust and moisture, which can interfere with the motor's operation. Second, the ventilation mechanism cannot adaptively adjust the ventilation power according to the motor's speed without electronic control. Traditional ventilation mechanisms rely solely on turbofans that rotate synchronously with the rotor, making it difficult to significantly adjust the ventilation power. The degree of heat generation varies considerably between low and high speeds (refer to P=I²R), which can easily lead to mismatches. If the ventilation power is too low, the motor may overheat and become inefficient. Conversely, if the ventilation efficiency is too high, unnecessary airflow can occur. Summary of the Invention

[0003] The purpose of this invention is to provide a heat dissipation-optimized energy-saving self-excited asynchronous motor to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heat dissipation optimized energy-saving self-excited asynchronous motor includes a housing, a stator, and a rotor. The stator is rigidly connected to the housing in a detachable manner, and the rotor is rotatably connected to it. The stator includes an output shaft. The housing is equipped with a controllable first ventilation mechanism and a second ventilation mechanism. The output shaft axially passes through the housing and is equipped with an air exchange mechanism located inside the housing. The air exchange mechanism includes a support plate, a sliding seat, a first turbofan blade, and a first tension spring. The support plate is rigidly connected to the output shaft on the same axis. Multiple sliding seats are radially slidably connected to the support plate at equal angles. Each sliding seat has an outward-facing first turbofan blade fixed along the radial direction of the output shaft. Each sliding seat and the support plate are rigidly connected together by a first tension spring. Under the elastic tension of the first tension spring, each sliding seat tends to move closer to each other, allowing the first turbofan blade to be intermittently inserted into the support plate. The first ventilation mechanism and the second ventilation mechanism are located at opposite ends of the air supply direction of the air exchange mechanism.

[0006] Based on the above technical solution, the output shaft is arranged laterally, the rotor's rotation direction is inconvenient, the air supply direction of the ventilation mechanism is from back to front, the outer shell includes a first shell, a base, a rear cover, a front cover, and heat dissipation fins, the first ventilation mechanism includes a rear air exchange slot, a rotary drive mechanism, a baffle, and a front air exchange slot, the stator is located inside the first shell and is detachably rigidly connected to the first shell, the bottom of the first shell is fixed with a base that extends through it, the rear of the first shell is detachably rigidly connected with a rear cover, and the front of the first shell is detachably rigidly connected with a front cover, multiple heat dissipation fins are fixed to the outside of the first shell, and both the first shell and the heat dissipation fins are made of metal. The rear cover has multiple arc-shaped rear ventilation slots of different sizes running through it. A baffle is rotatably connected to the front side of the rear cover. The baffle has multiple arc-shaped front ventilation slots of different sizes running through it. Each rear ventilation slot and front ventilation slot is set at an equal angle to the output shaft on the same circumference. The rear end of the baffle is attached to the front end of the rear cover. The baffle is equipped with a rotary drive mechanism, which is used to drive the baffle to rotate and brake in a controllable manner. When the baffle rotates relative to the rear cover, it can make each front ventilation slot and rear ventilation slot aligned and connected to each other to different degrees. When the baffle rotates relative to the rear cover to a certain angle, it can completely block and close each rear ventilation slot.

[0007] Based on the above technical solution, the front of the back cover is detachably rigidly connected to a support frame. The support frame is a hollowed-out shape that runs through the front and back, and a filter screen is closed and fixed in the hollowed-out part. The support frame and the baffle are interlocked with a gap. The baffle is rotatably connected in the gap between the support frame and the back cover, and the baffle can rotate relative to the support frame.

[0008] Based on the above technical solution, the rotary drive mechanism includes a support shaft, a guide rod, a spiral shaft, a rear magnetic chuck, a guide groove, a bushing, a front magnetic chuck, and an elastic tension assembly. The front end of the rear cover is rigidly connected to the support shaft, which is coaxial with the output shaft. The support shaft is radially rigidly connected to the guide rod, and a spiral shaft is inserted into the outer part of the support shaft with a clearance. The front of the spiral shaft is detachably rigidly connected to an annular rear magnetic chuck, and a spiral guide groove extends radially through it. The guide groove is slidably connected to the guide rod. When the guide groove slides back and forth along the guide rod, the spiral shaft rotates and slides axially relative to the support shaft. The baffle is fixed with a bushing. The bushing is axially slidably connected to the flower shaft. When the flower shaft rotates, the bushing can drive the baffle to rotate. Each of the sliding seats is detachably rigidly connected to a front magnetic chuck. When the support plate does not rotate, each front magnetic chuck approaches each other under the elastic tension of the first tension spring and is located within the annular inner circle of the rear magnetic chuck. An elastic tension assembly is installed between the flower shaft and the rear cover. Under the elastic tension of the elastic tension assembly, the flower shaft tends to move backward. When each of the sliding seats moves away from each other to a certain extent, it can be aligned with the rear magnetic chuck to generate magnetic attraction, thereby driving the flower shaft to overcome the elastic tension of the elastic tension assembly and move forward.

[0009] Based on the above technical solution, the elastic tension component includes a support plate, a pull stud, a second tension spring, and a support member. The rear cover is equipped with the support member, and the flower shaft is coaxially rotatably connected to the support plate. The support plate is inserted with a pull stud from front to back. The pull stud is coaxially arranged with the output shaft following the virtual rotation axis of the support plate. The pull stud and the support member are rigidly connected by a second tension spring. Under the elastic tension of the second tension spring, the pull stud can pull the flower shaft to move backward.

[0010] Based on the above technical solution, the support component includes an adjusting bolt, a screw cylinder, and a straight groove. The rear cover is rotatably connected to the adjusting bolt. The screw of the adjusting bolt is coaxially threaded to the screw cylinder. The screw cylinder is arranged laterally and has a straight groove running through it radially. The straight groove is slidably connected to the guide rod. The front end of the adjusting bolt and the rear end of the pull pin are rigidly connected to a second tension spring. The front end of the screw cylinder can abut against the front end of the swivel shaft. When the adjusting bolt rotates forward and backward, it can drive the screw cylinder to slide back and forth along the guide rod. When the screw cylinder moves forward, it can push the swivel shaft forward. The head of the adjusting bolt has multiple teeth fixed at equal angles on its outer circumference. The rear end of the rear cover is fixed to a guide seat. The guide seat is slidably connected to a pin. The pin is arranged radially relative to the screw of the adjusting bolt. A compression spring is installed between the pin and the guide seat. Under the elastic repulsive force of the compression spring, the pin tends to move towards the adjusting bolt and can engage with the teeth.

[0011] Based on the above technical solution, the front part of the rear magnetic suction component protrudes forward in a stepped shape from the middle to the periphery. Both the front and rear magnetic suction components are permanent magnets. When the front and rear magnetic suction components are corresponding front to back, the magnetic poles of their adjacent ends are opposite. The rear part of the support plate has multiple limiting grooves running through it. The limiting grooves extend radially relative to the support plate and correspond to each sliding seat. Each of the front magnetic suction components protrudes from the rear part of the sliding seat and is interlocked with the limiting groove.

[0012] Based on the above technical solution, the second ventilation mechanism includes ventilation holes, a valve core, and a push-pull mechanism. Multiple ventilation holes are radially penetrating the front circumference of the first housing at equal angles. The valve core is slidably connected to the first housing. The push-pull mechanism is installed inside the first housing. The push-pull mechanism is used to drive the valve core to slide back and forth in a controllable manner. When the valve core slides back and forth to different degrees relative to the first housing, it can block and close the ventilation holes to different degrees.

[0013] Based on the above technical solution, a second housing is rotatably connected to the first housing. Multiple nozzles are fixedly connected to the front end of the second housing. Each nozzle is tangentially arranged in the same spiral direction relative to the output shaft. The second housing is connected to the inside of the first housing through ventilation holes. Multiple second turbofan blades are fixed at equal angles on the outer circumference of the second housing.

[0014] Based on the above technical solution, the output shaft is slidably connected to a pull rod at the front and rear. The pull rod and the pull stud are rotatably connected at the front. The front part of the pull rod is radially rigidly connected to two detachable support bolts. The two support bolts are corresponding to each other at the front and rear and are respectively equipped with bearings. The inner ring of the bearing is rigidly connected to the support bolt. The outer rings of the two bearings are respectively rolling and rubbing against the front and rear ends of the valve core. The valve core and the output shaft are inserted through a gap.

[0015] Compared with the prior art, the present invention has the following advantages: As the rotor speed increases, the sliding seats move away from each other under the action of centrifugal force, thereby causing each first turbine blade to gradually extend relative to the support plate, thus greatly increasing the air delivery power of the first turbine blade. Conversely, when the rotor speed decreases, the sliding seats move closer to each other under the elastic tension of the first tension spring, thereby causing each first turbine blade to gradually contract relative to the support plate, thus greatly reducing the air delivery power of the first turbine blade. This makes the ventilation power and rotor speed more well matched.

[0016] Because the rear magnetic suction component has a stepped structure, as the sliding seats move closer and further away from each other, when the front magnetic suction component corresponds to its front and rear, and moves further, the rear magnetic suction component can move closer and further away from the front magnetic suction component in a stepped manner. For example, the three-step structure in the attached figure allows the rear flower shaft to move in three steps. In this way, while automatically opening and closing the No. 1 ventilation mechanism, its power can also be adjusted in a stepped manner.

[0017] When the flower shaft moves back and forth, it can drive the pull pin and pull rod to move back and forth synchronously, thereby using the bearing and support bolt to realize the synchronous drag of the valve core, and thus realize the automatic opening and closing and power regulation of the second ventilation mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the axial structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the rear structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the axial structure of the valve core and the first housing of the present invention.

[0021] Figure 4 This is a schematic diagram of the axial structure of the bushing and baffle of the present invention.

[0022] Figure 5 This is a schematic diagram showing the fit between the output shaft and the valve core of the present invention.

[0023] Figure 6 This is a schematic diagram of the fit between the guide rod and the guide groove of the present invention.

[0024] Figure 7 This is a schematic diagram showing the fit between the adjusting bolt and the screw cylinder of the present invention.

[0025] Figure 8 This is a right-side cross-sectional view of the structure of the support shaft of the present invention when it is fitted with the flower shaft and the screw barrel.

[0026] In the diagram: 1. Outer casing, 2. Stator, 3. Rotor, 4. Output shaft, 5. Ventilation mechanism 1, 6. Ventilation mechanism 2, 8. Support plate, 9. Sliding seat, 10. Turbine fan blade 1, 11. Tension spring 1, 12. Outer casing 1, 13. Base, 14. Rear cover, 15. Front cover, 16. Heat dissipation fins, 17. Rear ventilation slot, 19. Baffle, 20. Front ventilation slot, 21. Support frame, 22. Filter screen, 23. Support shaft, 24. Guide rod, 25. Scraper shaft 26. Rear magnetic clasp, 27. Guide groove, 28. Bushing, 29. Front magnetic clasp, 31. Pull stud, 32. No. 2 tension spring, 34. Adjusting bolt, 35. Screw barrel, 36. Straight groove, 37. Tooth, 38. Guide seat, 39. Pin, 40. Compression spring, 41. Limiting groove, 42. Ventilation hole, 43. Valve core, 45. No. 2 housing, 46. Nozzle, 47. No. 2 turbofan blade, 48. Pull rod, 49. Support bolt, 50. Bearing, 51. Support plate. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1-8 As shown, a heat dissipation optimized energy-saving self-excited asynchronous motor includes a housing 1, a stator 2, and a rotor 3. The stator 2 is rigidly connected to the housing 1 in a detachable manner, and the rotor 3 is rotatably connected to it. The stator 2 includes an output shaft 4. The housing 1 is equipped with a controllable ventilation mechanism 5 and a ventilation mechanism 6. The output shaft 4 axially penetrates the housing 1 and is equipped with a ventilation mechanism located inside the housing 1. The ventilation mechanism includes a support plate 8, a sliding seat 9, a first turbofan blade 10, and a first tension spring 11. The support plate 8 and the output shaft... 4. The support plate 8 is rigidly connected to the same axis. Multiple sliding seats 9 are slidably connected to the support plate 8 at equal angles. Each sliding seat 9 is fixed with an outward-facing first turbofan blade 10 along the radial direction of the output shaft 4. Each sliding seat 9 and the support plate 8 are rigidly connected to a first tension spring 11. Under the elastic tension of the first tension spring 11, each sliding seat 9 tends to move closer to each other, so that the first turbofan blade 10 can be intermittently inserted into the support plate 8. The first ventilation mechanism 5 and the second ventilation mechanism 6 are located at both ends of the air supply direction of the ventilation mechanism.

[0029] In use, the opening and closing of ventilation mechanism 5 and ventilation mechanism 6 are controlled according to ventilation needs. That is, they are opened when the rotor 3 rotates and closed when the rotor 3 stops. As the rotor 3 rotates, the rotation speed of the support plate 8 rotates synchronously, and the air can be delivered by the circumferentially moving turbine blades 10. As the rotation speed of the rotor 3 increases, the sliding seats 9 move away from each other under the action of centrifugal force, so that each turbine blade 10 gradually extends relative to the support plate 8, thereby greatly increasing the air delivery power of the turbine blades 10. Correspondingly, when the rotation speed of the rotor 3 decreases, the sliding seats 9 move closer to each other under the elastic tension of the tension spring 11, so that each turbine blade 10 gradually contracts relative to the support plate 8, thereby greatly reducing the air delivery power of the turbine blades 10. This makes the ventilation power more matched with the rotation speed of the rotor 3.

[0030] The output shaft 4 is arranged laterally, and the rotor 3 rotates in an inconvenient direction. The air supply direction of the ventilation mechanism is from back to front. The outer shell 1 includes a first shell 12, a base 13, a rear cover 14, a front cover 15, and heat dissipation fins 16. The first ventilation mechanism 5 includes a rear air exchange slot 17, a rotary drive mechanism, a baffle 19, and a front air exchange slot 20. The stator 2 is located inside the first shell 12 and is detachably rigidly connected to the first shell 12. The base 13 is fixed to the bottom of the first shell 12 and extends through it from front to back. The rear of the first shell 12 is detachably rigidly connected to the rear cover 14, and the front of the first shell 12 is detachably rigidly connected to the front cover 15. Multiple heat dissipation fins 16 are fixed to the outside of the first shell 12. Both the first shell 12 and the heat dissipation fins 16 are made of metal. The rear cover 14 has multiple arc-shaped rear ventilation slots 17 of different sizes running through it. A baffle 19 is rotatably connected to the front side of the rear cover 14. The baffle 19 has multiple arc-shaped front ventilation slots 20 of different sizes running through it. Each of the rear ventilation slots 17 and the front ventilation slots 20 is set at equal circumference relative to the output shaft 4. The rear end of the baffle 19 is in contact with the front end of the rear cover 14. The baffle 19 is equipped with a rotary drive mechanism, which is used to drive the baffle 19 to rotate and brake in a controllable manner. When the baffle 19 rotates relative to the rear cover 14, it can make each front ventilation slot 20 and the rear ventilation slot 17 aligned and connected to each other to different degrees. When the baffle 19 rotates relative to the rear cover 14 to a certain angle, it can completely block and close each rear ventilation slot 17.

[0031] Furthermore, the baffle 19 can be rotated by the rotary drive mechanism, thereby adjusting the alignment of the front ventilation slot 20 and the rear ventilation slot 17, realizing the opening and closing of the first ventilation mechanism 5 and the adjustment of the ventilation power to meet the usage requirements.

[0032] The front of the rear cover 14 is detachably rigidly connected to a support frame 21. The support frame 21 is a hollowed-out shape that runs through the front and back, and a filter screen 22 is closed and fixed in the hollowed-out part. The support frame 21 is interlocked with a baffle 19. The baffle 19 is rotatably connected in the gap between the support frame 21 and the rear cover 14, and the baffle 19 can rotate relative to the support frame 21.

[0033] Furthermore, the detachable support frame 21 and filter screen 22 not only restrict the position of the baffle 19, but also filter the air entering the first housing 12 through the rear air exchange slot 17 and the front air exchange slot 20, reducing interference from dust and other debris.

[0034] The rotary drive mechanism includes a support shaft 23, a guide rod 24, a spiral shaft 25, a rear magnetic chuck 26, a guide groove 27, a bushing 28, a front magnetic chuck 29, and an elastic tension assembly. The front end of the rear cover 14 is rigidly connected to the support shaft 23, which is coaxial with the output shaft 4. The support shaft 23 is radially rigidly connected to the guide rod 24, and the spiral shaft 25 is inserted into the outer gap of the support shaft 23. The front of the spiral shaft 25 is detachably rigidly connected to an annular rear magnetic chuck 26, and a spiral guide groove 27 extends radially through it. The guide groove 27 is slidably connected to the guide rod 24. When the guide groove 27 slides back and forth along the guide rod 24, the spiral shaft 25 rotates and slides axially relative to the support shaft 23. The baffle 19 is fixed with a shaft. The bushing 28 is axially slidably connected to the flower shaft 25. When the flower shaft 25 rotates, it can drive the baffle 19 to rotate through the bushing 28. Each of the sliding seats 9 is rigidly connected to a front magnetic absorbing member 29 in a detachable manner at the rear. When the support plate 8 is not rotating, each of the front magnetic absorbing members 29 moves closer to each other under the elastic tension of the first tension spring 11 and is located within the annular inner circle of the rear magnetic absorbing member 26. An elastic tension assembly is installed between the flower shaft 25 and the rear cover 14. Under the elastic tension of the elastic tension assembly, the flower shaft 25 tends to move backward. When each of the sliding seats 9 moves away from each other to a certain extent, it can be aligned with the rear magnetic absorbing member 26 to generate magnetic attraction, thereby driving the flower shaft 25 to overcome the elastic tension of the elastic tension assembly and move forward.

[0035] Furthermore, when the rotational speed of rotor 3 increases to a certain value, each sliding seat 9, under the action of centrifugal force, drives the front magnetic suction component 29 to move away to a certain extent and align with the rear magnetic suction component 26. At this time, the two generate a strong magnetic attraction, which can drive the rear magnetic suction component 26 and the spiral shaft 25 to slide forward along the guide rod 24. Then, the spiral shaft 25 can drive the bushing 28 and the baffle 19 to rotate, thereby realizing the automatic opening of the first ventilation mechanism 5. When the rotational speed of rotor 3 decreases to a certain value, each sliding seat 9, under the elastic tension of the first tension spring 11, drives the front magnetic suction component 29 to move closer to each other and to separate from the rear magnetic suction component 26. At this time, the spiral shaft 25 resets backward under the action of the elastic tension component, thereby driving the bushing 28 and the baffle 19 to reverse, realizing the sealing of the rear ventilation slot 17, thus realizing the automatic closing of the first ventilation mechanism 5.

[0036] The elastic tension component includes a support plate 51, a pull stud 31, a second tension spring 32, and a support member. The rear cover 14 is equipped with the support member. The flower shaft 25 is coaxially rotatably connected to the support plate 51. The pull stud 31 is inserted into the support plate 51 from front to back. The pull stud 31 is coaxially arranged with the output shaft 4 following the virtual rotation axis of the support plate 51. The pull stud 31 and the support member are rigidly connected by the second tension spring 32. Under the elastic tension of the second tension spring 32, the pull stud 31 can pull the flower shaft 25 to move backward.

[0037] The support component includes an adjusting bolt 34, a screw cylinder 35, and a straight groove 36. The rear cover 14 is rotatably connected to the adjusting bolt 34. The screw of the adjusting bolt 34 is coaxially threaded to the screw cylinder 35. The screw cylinder 35 is arranged laterally and has a straight groove 36 running through it radially. The straight groove 36 is slidably connected to the guide rod 24. The front end of the screw of the adjusting bolt 34 and the rear end of the pull stud 31 are rigidly connected to a second tension spring 32. The front end of the screw cylinder 35 can abut against the front end of the spiral shaft 25. When the adjusting bolt 34 rotates in both directions, it can drive the screw cylinder 35 along the guide rod. The screw 35 slides back and forth, and when it moves forward, it can push the flower shaft 25 forward. The head of the adjusting bolt 34 has multiple teeth 37 fixed at equal angles on its outer circumference. The rear end of the rear cover 14 is fixed with a guide seat 38. The guide seat 38 is slidably connected with a pin 39. The pin 39 is radially arranged relative to the screw of the adjusting bolt 34. A compression spring 40 is installed between the pin 39 and the guide seat 38. Under the elastic repulsive force of the compression spring 40, the pin 39 has a tendency to move closer to the adjusting bolt 34 and can engage with the teeth 37.

[0038] Furthermore, under the elastic tension of the second tension spring 32, the pull pin 31 can pull the spiral shaft 25, causing it to tend to move backward. By manually rotating the adjusting bolt 34 in the forward direction, the screw cylinder 35 can move forward along the guide rod 24, thereby overcoming the elastic tension of the second tension spring 32 and pushing the spiral shaft 25 forward. When the adjusting bolt 34 is rotated in the reverse direction, the screw cylinder 35 can move backward along the guide rod 24, thereby causing the spiral shaft 25 to return to its original position under the elastic tension of the second tension spring 32. In this way, the opening and closing of the first ventilation mechanism 5 and the power adjustment can be achieved manually. This method allows for manual adjustment of the ventilation power so that... The ventilation power can be adjusted according to the external working environment. For example, when the working environment temperature is high, the ventilation power can be increased appropriately to ensure the heat dissipation effect, while when the working environment temperature is low, the ventilation power can be reduced appropriately. In addition, the heat dissipation function of the heat dissipation fins 16 can meet the heat dissipation needs, reducing unnecessary air circulation and thus reducing the pollution of dust and other foreign objects, making it more convenient to use. When manually rotating the adjusting bolt 34, the pin 39 can be manually moved to disengage it from the teeth 37. After the adjustment is completed, the elastic repulsive force of the compression spring 40 can make the pin 39 and the teeth 37 re-engage, thereby preventing the adjusting bolt 34 from rotating accidentally.

[0039] The front part of the rear magnetic chuck 26 protrudes forward in a stepped shape from the center to the periphery. Both the front magnetic chuck 29 and the rear magnetic chuck 26 are permanent magnets. When the front magnetic chuck 29 and the rear magnetic chuck 26 are corresponding front to back, the magnetic poles of their adjacent ends are opposite. The rear part of the support plate 8 has multiple limiting grooves 41 extending radially relative to the support plate 8 and corresponding to each sliding seat 9. Each of the front magnetic chuck 29 protrudes from the rear part of the sliding seat 9 and is interlocked with the limiting groove 41.

[0040] Furthermore, since the rear magnetic suction member 26 has a stepped structure, as the sliding seats 9 move closer and further away from each other, when the front magnetic suction member 29 corresponds to its front and rear, and moves further, the rear magnetic suction member 26 can move closer and further away from the front magnetic suction member 29 in a stepped manner compared to the front magnetic suction member 29. For example, the three-step structure in the attached figure allows the rear flower shaft 25 to move in three stages. In this way, while automatically realizing the opening and closing of the first ventilation mechanism 5, its power can also be adjusted in a stepped manner (relying on the different alignment degrees of the front ventilation groove 20 and the rear ventilation groove 17). The gap insertion between the front magnetic suction member 29 and the limiting groove 41 can prevent the sliding seat 9 from detaching from the support plate 8.

[0041] The second ventilation mechanism 6 includes ventilation holes 42, valve core 43, and push-pull mechanism. Multiple ventilation holes 42 are radially penetrating the front circumference of the first housing 12 at equal angles. The valve core 43 is slidably connected to the first housing 12. The push-pull mechanism is installed inside the first housing 12. The push-pull mechanism is used to drive the valve core 43 to slide back and forth in a controllable manner. When the valve core 43 slides back and forth to different degrees relative to the first housing 12, it can block and close the ventilation holes 42 to different degrees, thereby realizing the opening and closing and power adjustment of the second ventilation mechanism 6.

[0042] A second housing 45 is rotatably connected to the outside of the first housing 12. A plurality of nozzles 46 are fixedly connected to the front end of the second housing 45. Each nozzle 46 is tangentially arranged in the same spiral direction relative to the output shaft 4. The second housing 45 is connected to the inside of the first housing 12 through a ventilation hole 42. A plurality of second turbine blades 47 are fixed at equal angles on the outer circumference of the second housing 45.

[0043] Furthermore, when the valve core 43 releases partial obstruction of the ventilation hole 42, as the first turbofan blade 10 rotates, air enters the first housing 12 through the rear air exchange slot 17 and the front air exchange slot 20, then flows through the rotor 3 and stator 2 to carry away heat, and is discharged through the ventilation hole 42, the second housing 45 and the nozzle 46. When the air is discharged from the nozzle 46, since the nozzle 46 is tangentially arranged in the same spiral direction as the output shaft 4, it can drive the second housing 45 to rotate, thereby driving the second turbofan blade 47 to rotate, which can improve the airflow effect around the first housing 12, thereby enhancing the heat exchange efficiency between the air and components such as the heat dissipation fins 16, that is, improving the heat dissipation efficiency, without causing additional dust and other debris to affect the inside of the first housing 12.

[0044] The output shaft 4 is slidably connected to a pull rod 48 on the front and back. The pull rod 48 is rotatably connected to the pull stud 31 on the same axis. The front part of the pull rod 48 is radially rigidly connected to two detachable support bolts 49. The two support bolts 49 are corresponding to each other and are respectively equipped with bearings 50. The inner ring of the bearing 50 is rigidly connected to the support bolt 49. The outer rings of the two bearings 50 roll and rub against the front and rear ends of the valve core 43 respectively. The valve core 43 is inserted into the output shaft 4 through a gap.

[0045] Furthermore, when the flower shaft 25 moves back and forth, it can drive the pull pin 31 and the pull rod 48 to move back and forth synchronously, thereby using the bearing 50 and the support bolt 49 to realize the synchronous drag of the valve core 43, thus realizing the automatic opening and closing and power adjustment of the second ventilation mechanism 6. The rolling friction between the bearing 50 and the valve core 43 reduces the interference of the pull rod 48 on the valve core 43 when it rotates with the output shaft 4.

[0046] The above description represents a preferred embodiment of the present invention. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. A heat dissipation optimized energy-saving self-excited asynchronous motor, comprising a housing (1), a stator (2), and a rotor (3), wherein the stator (2) is rigidly connected to the housing (1) in a detachable manner, and the rotor (3) is rotatably connected thereto; the stator (2) includes an output shaft (4), characterized in that: The outer casing (1) is equipped with a controllable opening and closing ventilation mechanism (5) and a ventilation mechanism (6). The output shaft (4) passes through the outer casing (1) axially. The output shaft (4) is equipped with a ventilation mechanism located inside the outer casing (1) and includes a support plate (8), a sliding seat (9), a first turbofan blade (10), and a first tension spring (11). The support plate (8) is rigidly connected to the output shaft (4) on the same axis. Multiple sliding seats (9) are slidably connected to the support plate (8) at equal angles on its circumference. Each of the sliding seats (9) has an outward-facing first turbofan blade (10) fixed along the radial direction of the output shaft (4). Each of the sliding seats (9) and the support plate (8) are rigidly connected by a first tension spring (11). Under the elastic tension of the first tension spring (11), each of the sliding seats (9) tends to move closer to each other, so that the first turbofan blade (10) can be intermittently inserted into the support plate (8). The first ventilation mechanism (5) and the second ventilation mechanism (6) are located at both ends of the air supply direction of the ventilation mechanism.

2. The heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 1, characterized in that: The output shaft (4) is arranged horizontally front to back. The rotation direction of the rotor (3) is inconvenient. The air supply direction of the ventilation mechanism is from back to front. The outer shell (1) includes a first shell (12), a base (13), a rear cover (14), a front cover (15), and heat dissipation fins (16). The first ventilation mechanism (5) includes a rear air exchange slot (17), a rotary drive mechanism, a baffle (19), and a front air exchange slot (20). The stator (2) is located inside the first shell (12) and is rigidly connected to the first shell (12) in a detachable manner. The base (13) is fixed at the bottom of the first shell (12) and extends through it from front to back. The rear part of the first shell (12) is rigidly connected to the rear cover (14), and the front part is rigidly connected to the front cover (15). Multiple heat dissipation fins (16) are fixed on the outside of the first shell (12). The first shell (12) and the heat dissipation fins (16) are both metal. The material of the rear cover (14) is such that multiple arc-shaped rear ventilation slots (17) of different sizes run through it from front to back. A baffle (19) is rotatably connected to the front side of the rear cover (14). Multiple arc-shaped front ventilation slots (20) of different sizes run through the baffle (19) from front to back. Each of the rear ventilation slots (17) and the front ventilation slots (20) are arranged at equal angles to the output shaft (4) on the same circumference. The rear end of the baffle (19) is connected to the rear cover (14). The front end is attached to each other. The baffle (19) is equipped with a rotary drive mechanism. The rotary drive mechanism is used to drive the baffle (19) to rotate and brake in a controllable manner. When the baffle (19) rotates relative to the rear cover (14), it can make each front ventilation slot (20) and the rear ventilation slot (17) aligned and connected to each other to different degrees. When the baffle (19) rotates relative to the rear cover (14) to a certain angle, it can completely block and close each rear ventilation slot (17).

3. The heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 2, characterized in that: The front of the back cover (14) is detachably rigidly connected to a support frame (21). The support frame (21) is a hollowed-out shape that runs through the front and back, and a filter screen (22) is closed and fixed in the hollowed-out part. The support frame (21) is interlocked with a baffle (19). The baffle (19) is rotatably connected in the gap between the support frame (21) and the back cover (14). The baffle (19) can rotate relative to the support frame (21).

4. The heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 2, characterized in that: The rotary drive mechanism includes a support shaft (23), a guide rod (24), a spiral shaft (25), a rear magnetic chuck (26), a guide groove (27), a bushing (28), a front magnetic chuck (29), and an elastic tension assembly. The front end of the rear cover (14) is rigidly connected to the support shaft (23). The support shaft (23) is coaxial with the output shaft (4). The support shaft (23) is radially rigidly connected to the guide rod (24). The spiral shaft (25) is inserted into the outer gap of the support shaft (23). The front part of the spiral shaft (25) is detachably rigidly connected to an annular rear magnetic chuck (26), and a spiral guide groove (27) is radially penetrating through it. The guide groove (27) is slidably connected to the guide rod (24). When the guide groove (27) slides back and forth along the guide rod (24), the spiral shaft (25) rotates and slides axially relative to the support shaft (23). The baffle ( 19) A bushing (28) is fixed, and the bushing (28) is axially slidably connected to the flower shaft (25). When the flower shaft (25) rotates, it can drive the baffle (19) to rotate through the bushing (28). Each of the sliding seats (9) is rigidly connected to a front magnetic absorbing member (29) in a detachable manner. When the support plate (8) does not rotate, each of the front magnetic absorbing members (29) approaches each other under the elastic tension of the first tension spring (11) and is located within the annular inner circle of the rear magnetic absorbing member (26). An elastic tension component is installed between the flower shaft (25) and the rear cover (14). The flower shaft (25) has a tendency to move backward under the elastic tension of the elastic tension component. When each of the sliding seats (9) moves away from each other to a certain extent, it can be aligned with the rear magnetic absorbing member (26) to generate magnetic attraction, thereby driving the flower shaft (25) to overcome the elastic tension of the elastic tension component and move forward.

5. The heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 4, characterized in that: The elastic tension component includes a support plate (51), a pull stud (31), a second tension spring (32), and a support member. The rear cover (14) is equipped with the support member. The flower shaft (25) is coaxially rotatably connected to the support plate (51). The support plate (51) is inserted with pull studs (31) from front to back. The pull studs (31) are coaxially arranged with the output shaft (4) following the virtual rotation axis of the support plate (51). The pull studs (31) and the support member are rigidly connected by a second tension spring (32). Under the elastic tension of the second tension spring (32), the pull studs (31) can pull the flower shaft (25) to move backward.

6. The heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 5, characterized in that: The support includes an adjusting bolt (34), a screw cylinder (35), and a straight groove (36). The rear cover (14) is rotatably connected to the adjusting bolt (34). The screw of the adjusting bolt (34) is coaxially threaded to the screw cylinder (35). The screw cylinder (35) is arranged horizontally back and forth and has a straight groove (36) running through it radially. The straight groove (36) is slidably connected to the guide rod (24). The front end of the adjusting bolt (34) and the rear end of the pull stud (31) are rigidly connected to a second tension spring (32). The front end of the screw cylinder (35) can abut against the front end of the flower shaft (25). When the adjusting bolt (34) rotates forward and backward, it can drive the screw cylinder (35) along the guide rod. (24) Sliding back and forth, the screw (35) can push the flower shaft (25) forward when it moves forward. The head of the adjusting bolt (34) is fixed with multiple teeth (37) at equal angles on the outer circumference. The rear end of the back cover (14) is fixed with a guide seat (38). The guide seat (38) is slidably connected with a pin (39). The pin (39) is radially arranged relative to the screw of the adjusting bolt (34). A compression spring (40) is installed between the pin (39) and the guide seat (38). Under the elastic repulsive force of the compression spring (40), the pin (39) has a tendency to move closer to the adjusting bolt (34) and can mesh with the teeth (37).

7. The heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 6, characterized in that: The front part of the rear magnetic accumulator (26) protrudes forward in a stepped manner from the middle to the periphery. Both the front magnetic accumulator (29) and the rear magnetic accumulator (26) are permanent magnets. When the front magnetic accumulator (29) and the rear magnetic accumulator (26) are corresponding front to back, the magnetic poles of their adjacent ends are opposite. The rear part of the support plate (8) has multiple limiting grooves (41) running through it. The limiting grooves (41) extend radially relative to the support plate (8) and correspond to each sliding seat (9) front to back. Each of the front magnetic accumulators (29) protrudes from the rear part of the sliding seat (9) and is intermittently inserted into the limiting groove (41).

8. A heat dissipation optimized energy-saving self-excited asynchronous motor according to any one of claims 5-7, characterized in that: The second ventilation mechanism (6) includes ventilation holes (42), valve core (43), and push-pull mechanism. Multiple ventilation holes (42) are radially penetrating the front circumference of the first housing (12) at equal angles. The valve core (43) is slidably connected to the first housing (12) from front to back. The push-pull mechanism is installed in the first housing (12). The push-pull mechanism is used to drive the valve core (43) to slide back and forth in a controllable manner. When the valve core (43) slides back and forth to different degrees relative to the first housing (12), it can block and close the ventilation holes (42) to different degrees.

9. A heat dissipation optimized energy-saving self-excited asynchronous motor according to claim 8, characterized in that: The first housing (12) is rotatably connected to the second housing (45). The front end of the second housing (45) is fixedly connected to multiple nozzles (46). Each nozzle (46) is tangentially arranged in the same spiral direction relative to the output shaft (4). The second housing (45) is connected to the inside of the first housing (12) through a ventilation hole (42). Multiple second turbofan blades (47) are fixed at equal angles on the outer circumference of the second housing (45).

10. A heat-dissipating optimized energy-saving self-excited asynchronous motor according to claim 9, characterized in that: The output shaft (4) is slidably connected to a pull rod (48) on the front and back. The pull rod (48) is rotatably connected to a pull stud (31) on the same axis. The front part of the pull rod (48) is rigidly connected to two detachable support bolts (49). The two support bolts (49) are corresponding to each other and are respectively equipped with bearings (50). The inner ring of the bearing (50) is rigidly connected to the support bolt (49). The outer rings of the two bearings (50) are respectively rolling and rubbing against the front and back ends of the valve core (43). The valve core (43) is inserted into the output shaft (4) through a gap.

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