Constant-temperature working semi-direct-drive variable-frequency speed-adjusting permanent magnet motor

Abstract

The application discloses a constant-temperature working semi-direct-drive variable-frequency speed-adjusting permanent magnet motor, and relates to the technical field of motors, which comprises a casing, an arc-shaped channel is arranged in the casing, the arc-shaped channel is located in the upper half of the casing, an outer air inlet groove is arranged in the upper half of the outer wall of the casing, the outer air inlet groove is communicated with the arc-shaped channel, a plurality of outer air inlet grooves are arranged, the plurality of outer air inlet grooves are distributed in a matrix shape, an inner air inlet groove is arranged in the upper half of the inner wall of the casing, the inner air inlet groove is communicated with the arc-shaped channel, a plurality of inner air inlet grooves are arranged, and the plurality of inner air inlet grooves correspond to the plurality of outer air inlet grooves one by one. The constant-temperature working semi-direct-drive variable-frequency speed-adjusting permanent magnet motor is provided with the arc-shaped channel, the arc-shaped box body, the outer air inlet groove and the inner air inlet groove and the like, and the air volume sensor is used for monitoring the air inlet condition, dust on the filter plate can be blown off in time and collected and treated, the heat dissipation efficiency is stable, and the motor can keep the constant-temperature working state.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a semi-direct drive variable frequency speed-regulating permanent magnet motor that operates at a constant temperature. Background Technology

[0002] Permanent magnet motors have advantages such as high efficiency, high power density, large power factor, large starting torque, and wide speed range. They have gradually replaced induction motors and switched reluctance motors and are increasingly widely used in many fields of industrial production and daily life.

[0003] Considering the need for heat dissipation during the operation of semi-direct drive variable frequency speed control permanent magnet motors, heat dissipation holes are typically provided on the motor housing, with a filter cotton layer installed at these holes. External airflow enters the motor housing through these holes to dissipate heat, which is then expelled through the air outlet on the motor housing. The airflow passes through the filter cotton layer, removing dust. However, considering the long-term use of permanent magnet motors, the filter cotton layer is easily clogged with dust, affecting airflow and reducing the motor's heat dissipation efficiency. Reduced heat dissipation can lead to excessively high internal temperatures, causing the motor to lose its constant operating temperature and significantly shortening its lifespan.

[0004] Therefore, it is necessary to propose a semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-direct drive variable frequency speed-regulating permanent magnet motor for constant-temperature operation. This addresses the issue of heat dissipation required during operation. Typically, heat dissipation holes with filter cotton layers are provided on the motor housing. External airflow enters the motor housing through these holes, dissipating heat and expelling it through the exhaust vents on the motor housing. While the filter cotton removes dust from the airflow, it is prone to clogging due to long-term use, affecting airflow and reducing heat dissipation. This reduced heat dissipation leads to excessively high internal temperatures, disrupting the constant-temperature operation and significantly shortening the motor's lifespan.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a semi-direct drive variable frequency speed-regulating permanent magnet motor operating at constant temperature, comprising a housing, wherein an arc-shaped channel is formed inside the housing, the arc-shaped channel being located in the upper half of the housing, and an external air inlet slot is formed in the upper half of the outer wall of the housing, the external air inlet slot communicating with the arc-shaped channel, the external air inlet slot being configured in multiple ways, the multiple external air inlet slots being arranged in a matrix, and an internal air inlet slot is formed in the upper half of the inner wall of the housing, the internal air inlet slot communicating with the arc-shaped channel, the internal air inlet slot being configured in multiple ways, the multiple internal air inlet slots corresponding one-to-one with the multiple external air inlet slots, and an arc-shaped box being slidably disposed inside the arc-shaped channel, the arc-shaped box being close to... A first air slot is provided on one side near the outer air inlet slot. Multiple first air slots are provided, each corresponding to one of the multiple outer air inlet slots. The arc length of the first air slot is greater than the arc length of the outer air inlet slot. A filter plate is fixedly connected inside the first air slot. A second air slot is provided on one side of the arc-shaped box near the inner air inlet slot. Multiple second air slots are provided, each cooperating with a corresponding inner air inlet slot. A reset component is provided at one end of the arc-shaped box, and an adjustment component is provided at the other end of the arc-shaped box. A fan component that cooperates with the adjustment component is provided on the side wall of the housing. A dust collection component and a communication component are also provided on the outside of the housing.

[0007] Preferably, a front cover and a rear cover are respectively sealed and installed at both ends of the housing, and a rotating shaft is rotatably connected between the front cover and the rear cover. A rotor device and a stator device are arranged inside the housing. The rotor device is fixedly connected to the rotating shaft, and the stator device is fixedly connected to the inner wall of the housing.

[0008] Preferably, a fan is provided on the side of the rear end cover facing away from the housing, the fan is fixedly connected to the rotating shaft, and a protective cover is fitted over the fan and fixedly connected to the housing.

[0009] Preferably, the reset assembly includes a spring, one end of which is fixedly connected to the arc-shaped box, and the other end of which is fixedly connected to the inner wall of the arc-shaped channel.

[0010] Preferably, the regulating component includes an airbag, a gas release channel, and a first solenoid valve. One end of the airbag is fixedly connected to the arc-shaped box, and the other end of the airbag is fixedly connected to the inner wall of the arc-shaped channel. The airbag and the arc-shaped box are connected through the gas release channel, and the first solenoid valve is fixedly installed inside the gas release channel.

[0011] Preferably, the pneumatic assembly includes a first air duct and an air pump. The air pump is fixedly connected to the outer wall of the housing. One end of the first air duct is connected to the air outlet of the air pump, and the other end of the first air duct passes through the outer wall of the housing and is connected to the air bag.

[0012] Preferably, the dust collection assembly includes a three-way connector, a fourth air duct, a second solenoid valve, an arc tube, and air holes. Multiple air holes are provided. The arc tube is fixedly connected to one end of the top of the housing. The air holes are opened on the side wall of the arc tube near the outer air inlet slot. The multiple air holes are distributed at equal distances. One end of the fourth air duct is connected to the arc tube, and the other end of the fourth air duct is connected to the three-way connector. The second solenoid valve is fixedly installed on the fourth air duct.

[0013] Preferably, the dust collection assembly further includes a second air duct, a filter box, and a third air duct. The filter box is fixedly connected to the outer wall of the housing. One end of the second air duct is connected to the air inlet of the air pump, and the other end of the second air duct is connected to the filter box. One end of the third air duct is connected to the filter box, and the other end of the third air duct is connected to a T-joint.

[0014] Preferably, the connecting component includes a fifth air duct and a third solenoid valve. One end of the fifth air duct is connected to a tee connector, and the other end of the fifth air duct is connected to the external environment. The third solenoid valve is fixedly installed on the fifth air duct.

[0015] Preferably, an air volume sensor is fixedly connected to the inner wall of the inner air inlet slot.

[0016] The technical effects and advantages of this invention are as follows: 1. This invention sets up structures such as arc-shaped channels, arc-shaped boxes, external air inlets and internal air inlets, and uses air volume sensors to monitor the air intake, so as to promptly blow away and collect and process the dust on the filter plate, ensure stable heat dissipation efficiency, and keep the motor in a constant temperature working state. 2. The air pump intake draws in external air through the fifth duct and delivers it into the airbag through the first duct, causing the airbag to expand. This expansion pushes the arc-shaped box within the arc-shaped channel towards the spring, compressing it. Simultaneously, the filter plate and the second air duct slide towards the spring. At this point, the second air duct overlaps and connects with the outer and inner air inlets, allowing external air to enter the casing through these ducts, thus dissipating heat from the interior. 3. The filter plate can filter dust in the air and prevent dust from entering the inside of the casing; 4. The filter box also filters the air drawn in by the air pump through the fifth air duct to prevent dust from entering the air bag and the interior of the arc-shaped box. 5. When the first solenoid valve is opened, the gas delivered by the air pump will directly enter the arc-shaped box through the gas release channel. The spring's return force will cause the arc-shaped box to reset inside the arc-shaped channel. During the sliding reset process of the arc-shaped box, the filter plate will slide reset synchronously. The bottom edge of the external air inlet slot will push and scrape the dust accumulated on the filter plate from the side near the airbag to the side near the spring, and always stay inside the external air inlet slot. 6. The gas entering the arc-shaped box will backflush the filter plate, thereby blowing the dust on the surface of the filter plate upwards and cleaning the filter plate. 7. The air pump intake end sucks up the dust floating upward through the air hole and arc tube, completing the cleaning of the dust and preventing it from re-adhering to the filter plate. 8. During the dust cleaning process, the air pump outlet is combined with the air bag and arc-shaped box, while the air pump inlet is combined with the air hole and arc pipe to achieve energy saving. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the semi-direct drive variable frequency speed control permanent magnet motor for constant temperature operation according to the present invention.

[0018] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0019] Figure 3 This is a schematic diagram of the semi-direct drive variable frequency speed control permanent magnet motor for constant temperature operation according to the present invention from another perspective.

[0020] Figure 4 This is a schematic diagram of the structure of the housing, stator assembly, and rotor assembly of the present invention.

[0021] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B.

[0022] Figure 6 This is a schematic diagram of the structure of the housing, outer air inlet slot, and inner air inlet slot of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C.

[0024] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point D.

[0025] Figure 9 For the present invention Figure 6 Enlarged structural diagram at point E in the middle.

[0026] In the diagram: 1. Housing; 2. Front cover; 3. Rear cover; 4. Shaft; 5. Fan; 6. Protective cover; 7. External air inlet slot; 8. Internal air inlet slot; 9. Arc-shaped channel; 10. Arc-shaped box; 11. First air slot; 12. Filter plate; 13. Second air slot; 14. Air volume sensor; 15. Spring; 16. Airbag; 17. Gas release channel; 18. First solenoid valve; 19. First air duct; 20. Air pump; 21. Second air duct; 22. Filter box; 23. Third air duct; 24. T-joint; 25. Fourth air duct; 26. Second solenoid valve; 27. Fifth air duct; 28. Third solenoid valve; 29. ​​Arc tube; 30. Air hole; 31. Rotor assembly; 32. Stator assembly. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] This invention provides, for example Figures 1-9 The illustrated semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation includes a housing 1. A front cover 2 and a rear cover 3 are respectively sealed and installed at both ends of the housing 1. A rotating shaft 4 is rotatably connected between the front cover 2 and the rear cover 3. In actual use, ball bearings are provided between the rotating shaft 4 and the front cover 2 and the rear cover 3.

[0029] The housing 1 houses a rotor assembly 31 and a stator assembly 32. The rotor assembly 31 is fixedly connected to the rotating shaft 4, and the stator assembly 32 is fixedly connected to the inner wall of the housing 1. In actual use, the rotor assembly 31 and the stator assembly 32 cooperate with each other, and also include wiring and other structures (not shown in the figure). This motor is a semi-direct drive variable frequency speed-regulating permanent magnet motor, and the motor and its working principle are common existing technologies, which will not be described in detail here. A fan 5 is located on the side of the rear end cover 3 facing away from the housing 1. The fan 5 is fixedly connected to the rotating shaft 4, and a protective cover 6 is fitted over the fan 5 and fixedly connected to the housing 1. Specifically, the end of the protective cover 6 away from the housing 1 has several round holes for air outlet, and the interior of the rear end cover 3 has an air vent to ensure air circulation. When the motor is running, the rotating shaft 4 rotates, driving the fan 5 to rotate.

[0030] An arc-shaped channel 9 is provided inside the housing 1, located in the upper half of the housing 1. An external air inlet slot 7 is provided in the upper half of the outer wall of the housing 1, communicating with the arc-shaped channel 9. Multiple external air inlet slots 7 are arranged in a matrix. An internal air inlet slot 8 is provided in the upper half of the inner wall of the housing 1, communicating with the arc-shaped channel 9. Multiple internal air inlet slots 8 are provided, each corresponding to one of the multiple external air inlet slots 7. The presence of multiple external air inlet slots 7 and internal air inlet slots 8, with a one-to-one correspondence, improves the motor's heat dissipation efficiency. An airflow sensor 14 is fixedly connected to the inner wall of the internal air inlet slot 8. When external air enters the housing 1 through the internal air inlet slot 8, the airflow sensor 14 monitors the airflow.

[0031] An arc-shaped box 10 is slidably disposed inside the arc-shaped channel 9. A first air slot 11 is formed on the side of the arc-shaped box 10 near the external air inlet slot 7. Multiple first air slots 11 are provided, each corresponding one-to-one with a different external air inlet slot 7. The arc length of the first air slot 11 is greater than the arc length of the external air inlet slot 7 (see reference). Figure 7 Even if the arc-shaped box 10 slides back and forth inside the arc-shaped channel 9, the first air slot 11 can remain aligned with the external air inlet slot 7. A filter plate 12 is fixedly connected inside the first air slot 11. The filter plate 12 filters the gas entering the housing 1. Furthermore, even if the arc-shaped box 10 slides back and forth inside the arc-shaped channel 9, the filter plate 12 can remain aligned with the external air inlet slot 7. The filter plate 12 can be a filter cotton plate, adjustable according to specific usage conditions.

[0032] As the arc-shaped box 10 slides back and forth inside the arc-shaped channel 9, the filter plate 12 also slides back and forth inside the arc-shaped channel 9, with its two ends alternately corresponding to the external air inlet slot 7. In actual use, the filter plate 12 is attached to the bottom edge of the external air inlet slot 7. Even if dust accumulates due to filtering the air entering the housing 1 at one end, the bottom edge of the external air inlet slot 7 will push and scrape the dust accumulated on the filter plate 12 when the filter plate 12 slides again, so that the dust is always inside the external air inlet slot 7.

[0033] The side of the arc-shaped box 10 near the inner air inlet 8 has a second air inlet 13. Multiple second air inlets 13 are provided, and the second air inlets 13 cooperate with the corresponding inner air inlet 8.

[0034] When the second air duct 13 is offset from the outer air inlet duct 7 and the inner air inlet duct 8, the arc-shaped box 10 seals the inner air inlet duct 8, and one end of the filter plate 12 corresponds to the outer air inlet duct 7. When the motor is running, the second air duct 13 is in an overlapping and connected state with the outer air inlet duct 7 and the inner air inlet duct 8, while the other end of the filter plate 12 corresponds to the outer air inlet duct 7. The rotation of the shaft 4 drives the fan 5 to rotate. During the rotation of the fan 5, external air enters the interior of the housing 1 in sequence through the outer air inlet duct 7, the filter plate 12, the arc-shaped box 10, the second air duct 13, and the inner air inlet duct 8, thereby dissipating heat from the interior of the housing 1; and the filter plate 12 can filter dust in the air to prevent dust from entering the interior of the housing 1.

[0035] A reset assembly, including a spring 15, is provided at one end of the arc-shaped box 10. One end of the spring 15 is fixedly connected to the arc-shaped box 10, and the other end of the spring 15 is fixedly connected to the inner wall of the arc-shaped channel 9. (Refer to...) Figure 6 When the second air slot 13 is offset from the outer air slot 7 and the inner air slot 8, the spring 15 is located on the side of any one of the inner air slots 8 facing away from the corresponding second air slot 13. When the arc-shaped box 10 slides inside the arc-shaped channel 9 and adjusts the second air slot 13 to overlap and connect with the outer air slot 7 and the inner air slot 8, the spring 15 will be squeezed.

[0036] Considering the adjustment of the communication state between the second air duct 13 and the outer air inlet duct 7 and the inner air inlet duct 8, an adjustment component is provided at the other end of the arc-shaped box 10. The adjustment component includes an airbag 16, a gas release channel 17, and a first solenoid valve 18. One end of the airbag 16 is fixedly connected to the arc-shaped box 10, and the other end of the airbag 16 is fixedly connected to the inner wall of the arc-shaped channel 9. Specifically, after the airbag 16 expands, it will push the arc-shaped box 10 to slide towards the spring 15 inside the arc-shaped channel 9 and compress the spring 15. At the same time, the filter plate 12 and the second air duct 13 will slide towards the spring 15 synchronously. At this time, the second air duct 13 is in an overlapping communication state with the outer air inlet duct 7 and the inner air inlet duct 8, and external air can enter the interior of the housing 1 through the outer air inlet duct 7, the second air duct 13, and the inner air inlet duct 8. The airbag 16 and the arc-shaped box 10 are connected through the gas release channel 17, and the first solenoid valve 18 is fixedly installed inside the gas release channel 17. A first solenoid valve 18 is provided to control the connectivity of the gas release channel 17.

[0037] With the motor stopped, the first solenoid valve 18 is closed, and the arc-shaped box 10 is positioned inside the arc-shaped channel 9 near the airbag 16 (see reference). Figure 6 At this time, the second air duct 13 is staggered from the outer air inlet duct 7 and the inner air inlet duct 8. The arc-shaped box 10 seals the inner air inlet duct 8, while the left half of the filter plate 12 corresponds to the outer air inlet duct 7.

[0038] A pneumatic assembly that works with the adjustment assembly is provided on the side wall of the housing 1. The pneumatic assembly includes a first air duct 19 and an air pump 20. The air pump 20 is fixedly connected to the outer wall of the housing 1. One end of the first air duct 19 is connected to the air outlet of the air pump 20, and the other end of the first air duct 19 passes through the outer wall of the housing 1 and is connected to the air bag 16.

[0039] Specifically, the air pump 20 delivers gas to the interior of the airbag 16 through the first air duct 19, causing the airbag 16 to expand. After the airbag 16 expands, it pushes the arc-shaped box 10 to slide towards the spring 15 inside the arc-shaped channel 9 and compresses the spring 15. At the same time, the filter plate 12 and the second air duct 13 slide towards the spring 15 simultaneously. At this time, the second air duct 13 is in an overlapping and connected state with the outer air inlet duct 7 and the inner air inlet duct 8. External air can enter the interior of the housing 1 through the outer air inlet duct 7, the second air duct 13 and the inner air inlet duct 8, and the filter plate 12 can filter the dust in the air.

[0040] In addition, a solenoid valve (not shown in the figure) can be installed on the first air duct 19. After the airbag 16 expands, the solenoid valve and air pump 20 on the first air duct 19 are closed, so that the airbag 16 remains in an expanded state, thereby making the second air duct 13 overlap and connect with the outer air inlet duct 7 and the inner air inlet duct 8 to achieve stable ventilation and heat dissipation.

[0041] Furthermore, when the airflow sensor 14 detects a decrease in airflow in the inner air intake slot 8, it indicates that the surface of the filter plate 12 is clogged with dust, reducing heat dissipation efficiency. Next, the first solenoid valve 18 is opened, and the gas delivered by the air pump 20 directly enters the arc-shaped housing 10 through the gas release channel 17. The return force of the spring 15 causes the arc-shaped housing 10 to reset within the arc-shaped channel 9. The arc-shaped housing 10 slides back to its original position within the arc-shaped channel 9, closer to the airbag 16 (see reference). Figure 6 At this time, the second air duct 13 is staggered from the outer air inlet duct 7 and the inner air inlet duct 8, and the arc-shaped box 10 seals the inner air inlet duct 8. During the sliding reset process of the arc-shaped box 10, the filter plate 12 will slide reset synchronously, and the bottom edge of the outer air inlet duct 7 will push and scrape the dust accumulated on the filter plate 12 from the side near the airbag 16 to the side near the spring 15, and always remain inside the outer air inlet duct 7.

[0042] Furthermore, the gas entering the arc-shaped box 10 will backflush the filter plate 12, thereby blowing the dust on the surface of the filter plate 12 upwards and cleaning the filter plate 12.

[0043] Considering that the arc-shaped box 10 seals the inner air inlet slot 8 at this time, while the rotating shaft 4 continues to drive the fan 5 to rotate, in order to avoid the formation of a negative pressure state inside the casing 1, air vents and other structures can be set on the casing 1, which can be adjusted according to the specific usage.

[0044] To collect and process dust blown up in the opposite direction, a dust collection assembly and a connecting assembly are also provided on the exterior of the housing 1. The dust collection assembly includes a three-way connector 24, a fourth air duct 25, a second solenoid valve 26, an arc tube 29, and multiple air holes 30. The arc tube 29 is fixedly connected to one end of the top of the housing 1. The air holes 30 are located on the side wall of the arc tube 29 near the outer air inlet slot 7, and the multiple air holes 30 are evenly distributed. One end of the fourth air duct 25 is connected to the arc tube 29, and the other end of the fourth air duct 25 is connected to the three-way connector 24. The second solenoid valve 26 is fixedly installed on the fourth air duct 25 and is used to control the connection status of the fourth air duct 25.

[0045] The vacuuming assembly also includes a second air duct 21, a filter box 22, and a third air duct 23. The filter box 22 is fixedly connected to the outer wall of the housing 1. The filter box 22 contains a filtration device, including a filter screen and other structures. This filtration device is a common existing technology and will not be described in detail here. One end of the second air duct 21 is connected to the air inlet of the air pump 20, and the other end of the second air duct 21 is connected to the filter box 22. One end of the third air duct 23 is connected to the filter box 22, and the other end of the third air duct 23 is connected to a three-way connector 24.

[0046] In the specific configuration, the connecting components include a fifth air duct 27 and a third solenoid valve 28. One end of the fifth air duct 27 is connected to a tee connector 24, and the other end of the fifth air duct 27 is connected to the external environment. The third solenoid valve 28 is fixedly installed on the fifth air duct 27. The connecting components are configured to prevent the air pump 20 from interfering with the airflow entering the casing 1 from the external air inlet slot 7 during the ventilation and heat dissipation phase, due to the suction from the air vent 30.

[0047] Specifically, the third solenoid valve 28 is opened, the second solenoid valve 26 is closed, and the air pump 20 is started. When it is necessary for the second air duct 13 to be in a state of overlap and communication with the outer air inlet duct 7 and the inner air inlet duct 8, the air pump 20 draws in external air through the fifth air duct 27 and delivers it to the inside of the air bag 16 through the first air duct 19, causing the air bag 16 to expand. After the air bag 16 expands, it will push the arc-shaped box 10 to slide towards the spring 15 inside the arc-shaped channel 9 and compress the spring 15. At the same time, the filter plate 12 and the second air duct 13 slide towards the spring 15 synchronously. At this time, the second air duct 13 is in a state of overlap and communication with the outer air inlet duct 7 and the inner air inlet duct 8. External air can enter the inside of the casing 1 through the outer air inlet duct 7, the second air duct 13, and the inner air inlet duct 8, thereby dissipating heat from the inside of the casing 1. Furthermore, the filter box 22 will also filter the gas drawn by the air pump 20 through the fifth air duct 27 to prevent dust from entering the air bag 16 and the interior of the arc-shaped box 10.

[0048] When cleaning the filter plate 12, the third solenoid valve 28 is closed and the second solenoid valve 26 is opened. The gas entering the arc-shaped box 10 back-blown the filter plate 12, thereby blowing the dust on the surface of the filter plate 12 upward. The air pump 20 intake end sucks the upward floating dust through the air hole 30 and the arc pipe 29, completing the cleaning of the dust and preventing it from adhering to the filter plate 12 again.

[0049] During the dust cleaning process, the air outlet of the air pump 20 is combined with the air bag 16 and the arc-shaped box 10, while the air inlet of the air pump 20 is combined with the air hole 30 and the arc pipe 29, etc., to achieve the purpose of energy saving.

[0050] In addition, in actual use, the air pump 20, filter box 22 and other structures can be set as an integrated device, and it is independent of the housing 1 to avoid the influence of motor vibration. It can be adjusted according to the specific use.

[0051] After cleaning, open the third solenoid valve 28, close the second solenoid valve 26, and close the first solenoid valve 18. Next, the air pump 20 draws in external air through the fifth air duct 27 and delivers it to the inside of the airbag 16 through the first air duct 19, causing the airbag 16 to expand. After expanding, it pushes the arc-shaped box 10 to slide towards the spring 15 inside the arc-shaped channel 9 and compresses the spring 15. The second air duct 13 is once again in a state of overlap and connection with the outer air inlet duct 7 and the inner air inlet duct 8. The air volume sensor 14 continues to monitor the air intake to ensure stable heat dissipation efficiency and keep the motor in a constant temperature operating state.

[0052] In addition, a controller (not shown in the figure) is provided and connected to the first solenoid valve 18, the second solenoid valve 26, the third solenoid valve 28, the air pump 20 and the air volume sensor 14. It can control the start and stop of the first solenoid valve 18, the second solenoid valve 26, the third solenoid valve 28 and the air pump 20 according to the air volume. The controller and its working principle are common existing technologies and will not be described in detail here.

[0053] This invention, by setting up structures such as an arc-shaped channel 9, an arc-shaped box 10, an outer air inlet slot 7, and an inner air inlet slot 8, and by using an air volume sensor 14 to monitor the air intake, promptly blows away and collects dust from the filter plate 12, ensuring stable heat dissipation efficiency and keeping the motor in a constant temperature operating state.

[0054] Working principle: When the motor is stopped, the first solenoid valve 18 is closed, and the arc-shaped box 10 is positioned inside the arc-shaped channel 9 near the airbag 16 (see reference). Figure 6 At this time, the second air duct 13 is staggered from the outer air inlet duct 7 and the inner air inlet duct 8. The arc-shaped box 10 seals the inner air inlet duct 8, while the left half of the filter plate 12 corresponds to the outer air inlet duct 7.

[0055] Before the motor starts operating, open the third solenoid valve 28, close the second solenoid valve 26, and start the air pump 20. The air pump 20 draws in external air through the fifth air duct 27 and delivers it to the inside of the airbag 16 through the first air duct 19, causing the airbag 16 to inflate. This inflated airbag 16 pushes the arc-shaped box 10 towards the spring 15 within the arc-shaped channel 9, compressing the spring 15. Simultaneously, the filter plate 12 and the second air duct 13 slide towards the spring 15. At this time, the second air duct 13 is in a state of overlap and communication with the outer air inlet duct 7 and the inner air inlet duct 8. External air can enter the housing 1 through the outer air inlet duct 7, the second air duct 13, and the inner air inlet duct 8, and the filter plate 12 can filter dust from the air.

[0056] When the motor is running, the rotating shaft 4 drives the fan 5 to rotate. During the rotation of the fan 5, external air enters the interior of the housing 1 through the external air inlet slot 7, the filter plate 12, the arc-shaped box 10, the second air slot 13, and the internal air inlet slot 8 in sequence, thereby dissipating heat from the interior of the housing 1; and the filter plate 12 can filter dust in the air to prevent dust from entering the interior of the housing 1.

[0057] When the airflow sensor 14 detects a decrease in airflow in the inner air inlet slot 8, it indicates that the surface of the filter plate 12 is clogged with dust, reducing heat dissipation efficiency. Next, the first solenoid valve 18 is opened, and the gas delivered by the air pump 20 directly enters the arc-shaped housing 10 through the gas release channel 17. The return force of the spring 15 causes the arc-shaped housing 10 to reset within the arc-shaped channel 9. The arc-shaped housing 10 slides back to its original position within the arc-shaped channel 9, closer to the airbag 16 (see reference). Figure 6 At this time, the second air duct 13 is staggered from the outer air inlet duct 7 and the inner air inlet duct 8, and the arc-shaped box 10 seals the inner air inlet duct 8. During the sliding reset process of the arc-shaped box 10, the filter plate 12 will slide reset synchronously, and the bottom edge of the outer air inlet duct 7 will push and scrape the dust accumulated on the filter plate 12 from the side near the airbag 16 to the side near the spring 15, and always remain inside the outer air inlet duct 7.

[0058] Simultaneously, the third solenoid valve 28 is closed, and the second solenoid valve 26 is opened. The gas entering the arc-shaped box 10 backflushes the filter plate 12, thereby blowing the dust on the surface of the filter plate 12 upwards. The air pump 20 intake end sucks up the upward-floating dust through the air hole 30 and the arc pipe 29. The dust is filtered inside the filter box 22, completing the cleaning of the filter plate 12 and the collection of dust.

[0059] Next, the third solenoid valve 28 is opened, the second solenoid valve 26 is closed, and the first solenoid valve 18 is closed. The air pump 20 draws in external air through the fifth air duct 27 and delivers it to the inside of the air bag 16 through the first air duct 19, causing the air bag 16 to expand. After expanding, it pushes the arc-shaped box 10 to slide towards the spring 15 inside the arc-shaped channel 9 and compresses the spring 15. The second air duct 13 is in an overlapping and connected state with the outer air inlet duct 7 and the inner air inlet duct 8. The air volume sensor 14 continues to monitor the air intake to ensure stable heat dissipation efficiency and keep the motor in a constant temperature operating state.

Claims

1. A semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation, comprising a housing (1), characterized in that: An arc-shaped channel (9) is provided inside the casing (1), and the arc-shaped channel (9) is located in the upper half of the casing (1). An external air inlet slot (7) is provided in the upper half of the outer wall of the casing (1). The external air inlet slot (7) is connected to the arc-shaped channel (9). Multiple external air inlets (7) are arranged in a matrix. An internal air inlet slot (8) is provided in the upper half of the inner wall of the casing (1). The internal air inlet slot (8) is connected to the arc-shaped channel (9). Multiple internal air inlets (8) are arranged, and multiple internal air inlets (8) correspond one-to-one with multiple external air inlets (7). An arc-shaped box (10) is slidably arranged inside the arc-shaped channel (9). A first air slot (11) is provided on the side of the arc-shaped box (10) near the external air inlet slot (7). Multiple first air ducts (11) are provided, and multiple first air ducts (11) correspond one-to-one with multiple external air inlet ducts (7). The arc length of the first air duct (11) is greater than the arc length of the external air inlet duct (7). A filter plate (12) is fixedly connected inside the first air duct (11). A second air duct (13) is provided on the side of the arc-shaped box (10) near the internal air inlet duct (8). Multiple second air ducts (13) are provided, and the second air ducts (13) cooperate with the corresponding internal air inlet duct (8). A reset component is provided at one end of the arc-shaped box (10), and an adjustment component is provided at the other end of the arc-shaped box (10). A wind-driven component that cooperates with the adjustment component is provided on the side wall of the housing (1). A dust-collecting component and a connecting component are also provided on the outside of the housing (1). The reset assembly includes a spring (15), one end of which is fixedly connected to the arc-shaped box (10), and the other end of which is fixedly connected to the inner wall of the arc-shaped channel (9). The regulating component includes an airbag (16), a gas release channel (17), and a first solenoid valve (18). One end of the airbag (16) is fixedly connected to the arc-shaped box (10), and the other end of the airbag (16) is fixedly connected to the inner wall of the arc-shaped channel (9). The airbag (16) and the arc-shaped box (10) are connected through the gas release channel (17). The first solenoid valve (18) is fixedly installed inside the gas release channel (17). The pneumatic assembly includes a first air duct (19) and an air pump (20). The air pump (20) is fixedly connected to the outer wall of the housing (1). One end of the first air duct (19) is connected to the air outlet of the air pump (20), and the other end of the first air duct (19) passes through the outer wall of the housing (1) and is connected to the air bag (16).

2. The semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation according to claim 1, characterized in that: The two ends of the housing (1) are respectively sealed with a front cover (2) and a rear cover (3). A rotating shaft (4) is rotatably connected between the front cover (2) and the rear cover (3). The housing (1) is equipped with a rotor device (31) and a stator device (32). The rotor device (31) is fixedly connected to the rotating shaft (4), and the stator device (32) is fixedly connected to the inner wall of the housing (1).

3. The semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation according to claim 2, characterized in that: A fan (5) is provided on the side of the rear cover (3) facing away from the housing (1). The fan (5) is fixedly connected to the rotating shaft (4). A protective cover (6) is fitted on the outside of the fan (5). The protective cover (6) is fixedly connected to the housing (1).

4. The semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation according to claim 1, characterized in that: The dust collection assembly includes a three-way connector (24), a fourth air duct (25), a second solenoid valve (26), an arc tube (29), and air holes (30). Multiple air holes (30) are provided. The arc tube (29) is fixedly connected to one end of the top of the housing (1). The air holes (30) are opened on the side wall of the arc tube (29) near the outer air inlet slot (7). Multiple air holes (30) are distributed at equal distances. One end of the fourth air duct (25) is connected to the arc tube (29), and the other end of the fourth air duct (25) is connected to the three-way connector (24). The second solenoid valve (26) is fixedly installed on the fourth air duct (25).

5. A semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation according to claim 4, characterized in that: The dust collection assembly also includes a second air duct (21), a filter box (22) and a third air duct (23). The filter box (22) is fixedly connected to the outer wall of the housing (1). One end of the second air duct (21) is connected to the air inlet of the air pump (20), and the other end of the second air duct (21) is connected to the filter box (22). One end of the third air duct (23) is connected to the filter box (22), and the other end of the third air duct (23) is connected to the three-way connector (24).

6. A semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation according to claim 5, characterized in that: The connecting components include a fifth air duct (27) and a third solenoid valve (28). One end of the fifth air duct (27) is connected to a three-way connector (24), and the other end of the fifth air duct (27) is connected to the external environment. The third solenoid valve (28) is fixedly installed on the fifth air duct (27).

7. A semi-direct drive variable frequency speed-regulating permanent magnet motor with constant temperature operation according to claim 1, characterized in that: An air volume sensor (14) is fixedly connected to the inner wall of the inner air inlet slot (8).

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