Self-cooling structure of a magnetic levitation motor

Abstract

The application belongs to the technical field of electric machines, and particularly relates to a self-cooling structure of a magnetic suspension motor, which comprises a main body, a fan blade connected to the left side of the inner cavity of the main body, a circulation part, a three-way valve, a heat exchange plate, a shunt pipe, a switching part and a sealing ring. The inner cavity of the main body is provided with an air duct, the left side of the inner cavity of the main body is connected with the fan blade, the circulation part comprises a flow guide cover, the flow guide cover is fixedly connected to the left side of the main body and is in communication with the left end of the air duct, the outlet of the flow guide cover is in communication with the three-way valve, the three-way valve is in communication with the heat exchange plate, the outlet of the heat exchange plate is in communication with the shunt pipe, the shunt pipe is in communication with the right end of the air duct, the switching part comprises the sealing ring, the sealing ring is fixedly connected to the two ends of the shunt pipe, the inner cavity of the shunt pipe is provided with a sliding rod, the two ends of the sliding rod are fixedly connected with the sealing pads, and the sealing pads are in contact with one of the two groups of sealing rings. The motor can be used to circulate air by using the kinetic energy of the motor, different cooling modes can be selected according to the room temperature, and the temperature of the environment can be efficiently used to improve the heat dissipation effect of the motor.

Description

Technical Field

[0001] This invention belongs to the field of motor technology, specifically relating to a self-cooling structure for a magnetic levitation motor. Background Technology

[0002] Magnetic levitation motors, as a new type of high-efficiency and energy-saving motor, have broad application prospects in industrial transmission, energy equipment and other fields. However, their special structure and working principle bring unique technical challenges to the heat dissipation system.

[0003] First, existing cooling solutions for magnetic levitation motors mostly involve installing cooling fans outside the motor housing or relying on external air sources. The cooling airflow only acts on the surface of the housing and cannot directly target the internal heat source of the motor. In addition, the fans require additional energy to drive and generate noise. If water cooling is used, a cooling water jacket needs to be installed inside the motor housing, along with an external water pump, water tank, heat exchanger, and piping. The system structure is complex and occupies a large area. At the same time, there are risks such as water leakage in the piping, internal scaling, and metal corrosion, resulting in high maintenance workload and costs.

[0004] Secondly, existing cooling systems perform poorly in response to different ambient temperatures. When the ambient temperature exceeds 35°C, the heat dissipation efficiency of traditional air-cooled systems will decrease significantly. In cold environments, water-cooled systems cannot effectively utilize low-temperature air, resulting in a waste of resources. Summary of the Invention

[0005] The purpose of this invention is to provide a self-cooling structure for a magnetic levitation motor, which can utilize the motor's own kinetic energy for circulating ventilation and can select different cooling methods according to the room temperature, thus efficiently utilizing the ambient temperature to improve its own heat dissipation effect.

[0006] The specific technical solution adopted by this invention is as follows:

[0007] A self-cooling structure for a magnetic levitation motor, comprising:

[0008] The main body has an air duct inside, and a fan blade is connected to the left side of the main body's inner cavity.

[0009] The circulation section includes a flow guide hood, which is fixedly connected to the left side of the main body and connected to the left end of the air duct. The outlet of the flow guide hood is connected to a three-way valve, which is connected to a heat exchange plate. The outlet of the heat exchange plate is connected to a diversion pipe, which is connected to the right end of the air duct.

[0010] The switching part includes a sealing ring, which is fixedly connected to both ends of the split pipe. The inner cavity of the split pipe is provided with a slide rod, and both ends of the slide rod are fixedly connected with sealing gaskets. The sealing gaskets are in contact with one of the two sets of sealing rings.

[0011] The sliding rod moves to switch the switching part to three states. The first state is when the sliding rod moves to the middle of the diversion pipe and the sealing gaskets at both ends do not contact any sealing ring. At this time, the inlet of the diversion pipe and the pipe opening connected to the outside are both in the open state.

[0012] Second state: The slide bar moves to the point where the sealing gasket contacts the front sealing ring. At this time, the inlet of the diversion pipe opens and the pipe opening connected to the outside closes.

[0013] Third state: The slide bar moves until the sealing gasket contacts the sealing ring on the rear side. At this time, the inlet of the diversion pipe is closed and the pipe opening connected to the outside is opened.

[0014] In a preferred embodiment, an air duct is provided on the outer part of the inner cavity of the main body, the right end of the air duct passes through the main body, an air outlet is provided on the left side of the main body, the left end of the air duct is connected to the air outlet, a rotor is provided in the middle of the inner cavity of the main body, and an output shaft is fixedly connected to the right end of the rotor, and the output shaft is rotatably connected to the middle right side of the main body.

[0015] In a preferred embodiment, a heat pipe is fixedly connected to the inner cavity of the main body, and the heat pipe is arranged around the rotor and placed in the inner cavity of the air duct. A fan blade is fixedly connected to the left end of the output shaft, and the fan blade is rotatably connected to the left side of the inner cavity of the main body, with the left side of the fan blade located at the left air outlet of the main body.

[0016] In a preferred embodiment, a dustproof net is fixedly connected to the main air outlet.

[0017] In a preferred embodiment, the air hood is fixedly connected to the air outlet on the left side of the main body, and the circulation part also includes an air supply pipe, which is connected to the outlet of the air hood, and a three-way valve is connected to the outlet of the air supply pipe.

[0018] In a preferred embodiment, the three-way valve has three sets of ports, one of which is connected to the air supply pipe, one of which is connected to the exhaust pipe, and the last set is connected to the heat exchange plate, with the exhaust pipe located on the side of the three-way valve away from the main body.

[0019] In a preferred embodiment, three sets of cooling fans A are fixedly installed on the rear side of the heat exchange plate. The inner cavity of the heat exchange plate has four sets of channels, and heat conduction grooves are formed between adjacent channels. The upper and lower ends of the heat conduction grooves penetrate the heat exchange plate, and cooling fans B are fixedly installed on the upper and lower ends of the heat conduction grooves. A diversion pipe is connected to the right end of the heat exchange plate, which separates two sets of pipes. Both sets of pipes are fixedly connected to the right side of the main body, and both sets of pipes are connected to the right end inlet of the air duct.

[0020] In a preferred embodiment, four sets of sealing rings are provided, distributed on the left and right sides of the inner cavity of the two sets of pipes connecting the diversion pipe and the air duct. The sealing rings in each set of pipes are symmetrically arranged, and a through hole is opened in the middle of each of the four sets of sealing rings to ensure the unobstructed flow of the diversion pipe.

[0021] In a preferred embodiment, both sets of pipe cavities of the diverter are fixedly connected with collars, and both sets of collars are slidably connected with slide rods. Both ends of the slide rods are fixedly connected with sealing gaskets, and the sealing gaskets at both ends of the slide rods are in contact with one of the sealing rings on the front or rear side.

[0022] In a preferred embodiment, a drive rod is fixedly connected to the rear end of each of the two sets of slide rods. The drive rod is slidably connected to the middle of the rear side of the split pipe and extends out of the split pipe. A protective sleeve is provided in the middle of the rear side of the split pipe, and an electric push rod is fixedly installed inside the sleeve. The output end of the electric push rod extends out of the sleeve and is fixedly connected to the middle of the drive rod. A temperature detector is fixedly installed on the upper end of the heat exchange plate.

[0023] The technical effects achieved by this invention are as follows:

[0024] The circulation section of this invention can utilize the kinetic energy of the motor itself for circulating ventilation, effectively improving the heat dissipation efficiency of the motor and saving energy. When the main body is running, it drives the fan blades to rotate, causing the fan blades to turbulent the airflow and drawing air from the air duct. At this time, the air blown out by the fan blades will enter the heat exchange plate through the guide shroud, then enter the distribution pipe through the heat exchange plate, return to the right end inlet of the air duct, and flow back into the air duct, realizing autonomous air circulation and cooling.

[0025] The circulation section of this invention can cool the hot air blown out of the motor, ensuring that the air circulating into the motor is low-temperature air, thereby improving the heat dissipation and cooling effect. During the circulation cooling process, the hot air blown out of the main body enters the heat exchange plate. At this time, the air is divided into multiple airflows through the internal chamber of the heat exchange plate and transfers heat to the heat exchange plate. Subsequently, the cooling section of the circulation section will run rapidly, allowing the air to circulate from the heat exchange plate and dissipate the transferred heat to the outside, thereby cooling the air and cooling the hot air blown out of the main body, realizing cold air circulation and improving the cooling and heat dissipation effect.

[0026] The switching unit of this invention can select different cooling methods according to the room temperature, and efficiently utilize the ambient temperature to improve its own heat dissipation effect. When dissipating heat, if the ambient temperature is suitable, the drive slide rod is located in the middle of the diversion pipe, so that the sealing rings on both sides are not blocked. The air duct will draw in cooling air and outside air to dissipate heat at the same time. When the environment is hot, the drive slide rod moves and blocks the sealing ring at the front end through the sealing gasket. The air duct only draws in cooling air. When the environment is cold, the slide rod moves backward and blocks the sealing ring at the rear end, so that the air duct only draws in outside air. At the same time, the operation of the heat exchange plate is stopped, and the air discharged from the duct is discharged to the outside through the three-way valve, realizing multi-mode adjustment. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a rear view schematic diagram of the entire invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of the organism in this invention;

[0030] Figure 4 This is a schematic diagram of the connection between the body and the circulation section in this invention;

[0031] Figure 5 This is a schematic diagram of air circulation in the circulation section of the present invention;

[0032] Figure 6 This is a schematic diagram of the heat exchange plate in this invention;

[0033] Figure 7 This is a cross-sectional schematic diagram of the heat exchange plate in this invention;

[0034] Figure 8 This is a cross-sectional schematic diagram of the switching section in this invention;

[0035] Figure 9 This is a schematic diagram showing the position of the electric actuator in this invention;

[0036] Figure 10 This is a schematic diagram of the third state of the switching unit in this invention.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 10. Main body; 11. Air duct; 12. Rotor; 13. Output shaft; 14. Heat pipe; 15. Fan blades; 16. Dust filter;

[0039] 20. Circulation section; 21. Drainage shroud; 22. Air supply duct; 23. Three-way valve; 24. Exhaust duct; 25. Heat exchange plate; 26. Radiator fan A; 27. Heat conduction groove; 28. Radiator fan B; 29. ​​Diverter pipe;

[0040] 30. Switching unit; 31. Sealing ring; 32. Collar ring; 33. Slide rod; 34. Sealing gasket; 35. Drive rod; 36. Electric actuator; 37. Temperature detector. Detailed Implementation

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0044] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0045] Please see the appendix Figures 1 to 4 , Figure 10 As shown, this embodiment provides a self-cooling structure for a magnetic levitation motor, including:

[0046] The main body 10 has an air duct 11 in its inner cavity, and a fan blade 15 is connected to the left side of the inner cavity of the main body 10.

[0047] The circulation section 20 includes a flow guide hood 21, which is fixedly connected to the left side of the main body 10 and communicates with the left end of the air duct 11. The outlet of the flow guide hood 21 is connected to a three-way valve 23, which is connected to a heat exchange plate 25. The outlet of the heat exchange plate 25 is connected to a diversion pipe 29, which is connected to the right end of the air duct 11.

[0048] The switching part 30 includes a sealing ring 31, which is fixedly connected to both ends of the diversion pipe 29. The inner cavity of the diversion pipe 29 is provided with a slide rod 33, and both ends of the slide rod 33 are fixedly connected with sealing gaskets 34. The sealing gaskets 34 are in contact with one of the two sets of sealing rings 31.

[0049] The sliding rod 33 moves to switch the switching part 30 to three states. The first state is when the sliding rod 33 moves to the middle of the diversion pipe 29 and the sealing gaskets 34 at both ends do not contact any of the sealing rings 31. At this time, the inlet of the diversion pipe 29 and the pipe opening connected to the outside are both in the open state.

[0050] Second state: The slide bar 33 moves to the point where the sealing gasket 34 contacts the front sealing ring 31. At this time, the inlet of the diversion pipe 29 is opened and the pipe opening connected to the outside is closed.

[0051] Third state: The slide bar 33 moves to the point where the sealing gasket 34 contacts the sealing ring 31 on the rear side. At this time, the inlet of the diversion pipe 29 is closed and the pipe opening connected to the outside is opened.

[0052] It should be noted that, in order to ensure the normal operation of the device, external protective devices and electrical control equipment should be connected, and an external mains power supply should be connected to power the device so that the device can operate in a stable and safe state.

[0053] In this embodiment, during use, heat within the main body 10 is transferred to the air duct 11. Simultaneously, the main body 10 drives the fan blades 15 to rotate, drawing air from the air duct 11 and sending it into the shroud 21 and heat exchange plate 25. Heat in the air is then transferred to the heat exchange plate 25. The circulation unit 20 operates to dissipate the heat transferred from the heat exchange plate 25, cooling the air. The cooled air then enters the right inlet of the air duct 11 through the splitter pipe 29, achieving circulating cooling. If the ambient temperature is suitable, the air duct 11 will simultaneously draw heat from the splitter pipe 29. In addition to the outside air, if the ambient temperature is high, the slide bar 33 will move forward and close the front sealing ring 31 through the sealing gasket 34, so that the air duct 11 only draws in the air inside the split pipe 29. If the ambient temperature is low, the slide bar 33 will move backward and close the rear sealing ring 31, so that the air duct 11 only draws in the outside air. In this state, the three-way valve 23 will discharge the air guided by the diversion hood 21, so that the air no longer enters the heat exchange plate 25. At the same time, the equipment on the heat exchange plate 25 will also stop operating, reducing the energy consumption of the device.

[0054] Secondly, please refer to it again. Figures 1 to 4 The main body 10 has an air duct 11 on the outer part of its inner cavity. The right end of the air duct 11 passes through the main body 10, and the left side of the main body 10 has an air outlet. The left end of the air duct 11 is connected to the air outlet. The rotor 12 is set in the middle of the inner cavity of the main body 10. The right end of the rotor 12 is fixedly connected to the output shaft 13. The output shaft 13 is rotatably connected to the middle right side of the main body 10 through a ball bearing.

[0055] A heat pipe 14 is fixedly connected to the inner cavity of the main body 10, and the heat pipe 14 is arranged on the periphery of the rotor 12 and placed in the inner cavity of the air duct 11. A fan blade 15 is fixedly connected to the left end of the output shaft 13. The fan blade 15 is rotatably connected to the left side of the inner cavity of the main body 10 through a ball bearing, and the left side of the fan blade 15 is located at the left air outlet of the main body 10.

[0056] A dustproof net 16 is fixedly connected to the air outlet of the main body 10.

[0057] It should be noted that the main body 10 contains a stator and a rotor 12, and the heat pipe 14 is located on the outer edge of the stator. The purpose is to transfer the heat generated by the winding assembly to the air duct 11 through the heat pipe 14, and then dissipate the heat through the air flowing in the air duct 11.

[0058] Heat pipe 14 is a copper heat pipe designed for rapid heat conduction;

[0059] The inlet of the air duct 11 is located on the upper and lower sides of the right side of the main body 10, while the outlet is evenly distributed on the left side of the inner cavity of the main body 10 and connected to the air outlet. The purpose is to draw out the gas in the air duct 11 through the air flow generated by the rotation of the fan blade 15, so as to realize gas circulation.

[0060] In this embodiment, during use, the rotor 12 drives the output shaft 13 to rotate and output kinetic energy, simultaneously driving the fan blades 15 to rotate at high speed. The rotation of the fan blades 15 generates a strong airflow inside the main body 10, drawing hot air from the air duct 11 and guiding it to the air intake shroud 21. At the same time, the heat pipe 14 rapidly conducts the heat generated by the rotor 12 during operation to the air duct 11, where the flowing air carries away the heat, further improving heat dissipation efficiency.

[0061] Secondly, please refer to it again. Figures 4 to 7 The air duct 21 is fixedly connected to the air outlet on the left side of the main body 10. The circulation part 20 also includes an air supply pipe 22, which is connected to the outlet of the air duct 21, and a three-way valve 23 is connected to the outlet of the air supply pipe 22.

[0062] The three-way valve 23 has three sets of ports, one of which is connected to the air supply pipe 22, one of which is connected to the exhaust pipe 24, and the last set is connected to the heat exchange plate 25. The exhaust pipe 24 is located on the side of the three-way valve 23 away from the main body 10.

[0063] Three sets of cooling fans A26 are fixedly installed on the rear side of the heat exchange plate 25. The inner cavity of the heat exchange plate 25 has four sets of channels, and heat conduction grooves 27 are opened between adjacent channels. The upper and lower ends of the heat conduction grooves 27 penetrate the heat exchange plate 25. Cooling fans B28 are fixedly installed on the upper and lower ends of the heat exchange plate 25 and the right end of the heat exchange plate 25 is connected to a diversion pipe 29. The diversion pipe 29 splits into two sets of pipes, and both sets of pipes are fixedly connected to the right side of the main body 10. At the same time, both sets of pipes are connected to the right end inlet of the air duct 11.

[0064] It should be noted that the air hood 21 is a conical metal hood designed to guide the air blown out of the main body 10 into the inner cavity of the air supply duct 22.

[0065] The three-way valve 23 is an electrically driven valve that can switch the connection between the air supply pipe 22 and the exhaust pipe 24 or the heat exchange plate 25. It is designed to directly exhaust the air in the main body 10 to the outside of the machine or send it into the heat exchange plate 25 for circulation, as needed.

[0066] The heat exchange plate 25 is made entirely of a metal with high thermal conductivity (e.g., copper), and the channels inside the heat exchange plate 25 are all S-shaped channels, designed to allow air to flow inside the heat exchange plate 25 for a long time.

[0067] The cooling fans B28 located on the upper and lower sides of the heat conduction groove 27 rotate in the same direction, blowing air upward (or downward), which is intended to allow air to circulate quickly from the heat conduction groove 27, thereby carrying away the heat transferred by the heat exchange plate 25 and cooling the gas inside the heat exchange plate 25.

[0068] Preferably, in order to improve the overall energy-saving effect of the device, the heat exchange plate 25 can be replaced as a plate heat exchange device to recover heat, thereby recovering more waste heat under the high temperature of the motor and improving the energy-saving effect.

[0069] To improve the cooling effect of the heat exchange plate 25, a semiconductor cooling chip can be added to the surface of the heat exchange plate 25, and the heat dissipation end can be directed toward the cooling fan A26 to dissipate heat, thereby achieving a more efficient cooling effect and ensuring the stability of the internal operating temperature of the motor.

[0070] In this embodiment, during use, hot air enters the air supply duct 22 through the guide shroud 21 and its flow direction is selected by the switching of the three-way valve 23. When the three-way valve 23 connects to the heat exchange plate 25, air enters its internal S-shaped channel, transferring heat to the heat conduction groove 27 during the flow. At this time, the cooling fan A26 and the cooling fan B28 work together; the former dissipates heat from the entire heat exchange plate 25, while the latter accelerates the airflow within the heat conduction groove 27, further improving cooling efficiency. After sufficient cooling, the air then flows into the diversion pipe 29 and returns to the right end inlet of the air duct 11, forming a closed-loop circulation. If the ambient temperature is low and energy consumption needs to be reduced, the three-way valve 23 can be switched to the exhaust pipe 24 to directly exhaust some of the hot air guided by the guide shroud 21 to the outside, avoiding unnecessary heat accumulation and reducing the operating load of the device, thereby achieving a more flexible and efficient temperature control effect.

[0071] Secondly, please refer to it again. Figures 8 to 10 Four sets of sealing rings 31 are provided, distributed on the left and right sides of the inner cavity of the two sets of pipes connecting the diversion pipe 29 and the air duct 11. The sealing rings 31 in each set of pipes are symmetrically arranged. A through hole is opened in the middle of each of the four sets of sealing rings 31 to ensure the smooth flow of the diversion pipe 29.

[0072] Both sets of pipe cavities of the diversion pipe 29 are fixedly connected with collars 32, and both sets of collars 32 are slidably connected with slide rods 33. Both ends of the slide rods 33 are fixedly connected with sealing gaskets 34, and the sealing gaskets 34 at both ends of the slide rods 33 are in contact with one of the sealing rings 31 on the front or rear side.

[0073] Both sets of slide rods 33 are fixedly connected to drive rods 35 at their rear ends. Drive rods 35 are slidably connected to the middle of the rear side of the diversion pipe 29 and extend out of the diversion pipe 29. A protective sleeve is provided in the middle of the rear side of the diversion pipe 29, and an electric push rod 36 is fixedly installed inside the sleeve. The output end of the electric push rod 36 extends out of the sleeve and is fixedly connected to the middle of the drive rod 35. A temperature detector 37 is fixedly installed on the upper end of the heat exchange plate 25.

[0074] It should be noted that the through hole in the middle of the sealing ring 31 is a conical structure hole, and the sealing gasket 34 is also a conical structure gasket. Furthermore, the outer edge of the sealing gasket 34 and the inner ring of the sealing ring 31 are both made of rubber, which is intended to ensure airtightness.

[0075] The front end of the diversion pipe 29 is provided with an opening, and a dust filter is provided at the opening to prevent external dust and impurities from entering the diversion pipe 29.

[0076] The upper and lower ends of the drive rod 35 are fixedly connected to the rear ends of the upper and lower sets of slide rods 33, respectively, so that by controlling the movement of the drive rod 35, the upper and lower sets of slide rods 33 can be moved simultaneously.

[0077] The length of the slide bar 33 is less than the distance between the two sets of sealing rings 31, so that the slide bar 33 can only control the sealing gasket 34 to contact one of the sets of sealing rings 31 or the sealing gaskets 34 at both ends not to contact any sealing rings 31.

[0078] Here, the switching unit 30 can be divided into three states depending on the position adjustment of the slider 33:

[0079] First state: The heat exchange plate 25 and the outside air are drawn in (the outside temperature is suitable). The slide bar 33 is placed in the middle of the two sets of sealing rings 31 so that the sealing gaskets 34 at both ends do not contact any sealing ring 31. At this time, the air duct 11 will simultaneously draw in the outside air and the cold air output from the heat exchange plate 25.

[0080] Second state: Only the air from the heat exchange plate 25 is drawn in (the outside temperature is high). The slide bar 33 moves forward, so that the front sealing gasket 34 contacts the front sealing ring 31, blocking the opening at the front of the diversion pipe 29. At this time, the air duct 11 can only draw in the cold air output from the heat exchange plate 25 to avoid the outside air being too hot and affecting the heat dissipation effect of the motor.

[0081] Third state: Only outside air is drawn in (the outside air is cold). The slide bar 33 moves backward, so that the sealing gasket 34 at the rear end contacts the sealing ring 31 at the rear end, blocking the outlet at the rear end of the diversion pipe 29 (at this time, the three-way valve 23 needs to switch the air supply pipe 22 to connect with the exhaust pipe 24). At this time, the air duct 11 only draws in outside air, thus making full use of the outside cold air for heat dissipation, so that the heat exchange plate 25 stops operating and saves energy.

[0082] Preferably, in order to ensure that the state of the switching unit 30 can be adjusted according to the temperature of the outside air, a control component should be installed in the motor, and the control component should be connected to the temperature detector 37 and the electric actuator 36. In this way, the state can be adjusted according to the ambient temperature detected by the temperature detector 37 (for example, when the room temperature is higher than 40 degrees Celsius, it switches to the second state; when it is lower than 20 degrees Celsius, it switches to the third state; and in the middle temperature range, it switches to the first state).

[0083] In this embodiment, if the ambient temperature is suitable, the electric actuator 36 will keep the slide bar 33 in the first state, allowing the air duct 11 to simultaneously draw in outside air and the cold air output from the heat exchange plate 25, achieving efficient heat dissipation. At this time, both ends of the diversion pipe 29 remain unobstructed. If the ambient temperature rises above a preset threshold, the electric actuator 36 drives the slide bar 33 forward, entering the second state. In this state, the sealing gasket 34 at the front end of the slide bar 33 is in close contact with the front sealing ring 31, sealing the opening at the front end of the diversion pipe 29 and preventing outside hot air from entering the air duct 11. At this time, the air duct 11 can only draw in the cold air output from the heat exchange plate 25, thus effectively avoiding the impact of high ambient temperature on the motor's heat dissipation effect. When the ambient temperature drops to a lower level, the electric actuator 36 drives the slide bar 33 backward, switching to the third state. In this state, the sealing gasket 34 at the rear end of the slide bar 33 contacts the rear sealing ring 31, sealing the outlet at the rear end of the diversion pipe 29. At this time, the three-way valve 23 switches synchronously, connecting the air supply pipe 22 and the exhaust pipe 24. The air guided by the duct 21 is directly discharged outdoors, while the air duct 11 only draws in cold outside air for heat dissipation. In this mode, the heat exchange plate 25 and its related equipment stop operating, further reducing energy consumption and making full use of the low-temperature environment to achieve efficient cooling.

[0084] The working principle of this invention is as follows: During use, the rotor 12 drives the fan blades 15 to rotate, drawing hot air from the air duct 11 and guiding it to the air intake shroud 21. Simultaneously, the heat in the main body 10 of the heat pipe 14 is conducted to the air duct 11, and the flowing air carries away the heat. Subsequently, the hot air enters the air supply pipe 22 and the heat exchange plate 25 through the air intake shroud 21. At this time, the air enters the inner cavity of the heat exchange plate 25, and during the flow, it transfers heat to the heat conduction groove 27. The cooling efficiency is improved by the coordinated work of the cooling fans A26 and B28, cooling the air. After being cooled, the air flows into the distribution pipe 29 and returns to the right end inlet of the air duct 11, forming a closed loop. If the ambient temperature is suitable, the electric push rod 36 will keep the slide rod 33 in the first state, so that the air duct 11 simultaneously draws in outside air and the cold air output from the heat exchange plate 25, achieving a highly efficient heat dissipation effect. If the ambient temperature rises, the electric actuator 36 drives the slide bar 33 forward, entering the second state, closing the opening at the front end of the diversion pipe 29 and preventing hot outside air from entering the air duct 11. At this time, the air duct 11 can only draw in the cold air output from the heat exchange plate 25. When the ambient temperature drops, the electric actuator 36 drives the slide bar 33 backward, switching to the third state, closing the outlet at the rear end of the diversion pipe 29. At this time, the three-way valve 23 switches synchronously, connecting the air supply pipe 22 and the exhaust pipe 24, and the air guided by the duct 21 is directly discharged outdoors, while the air duct 11 only draws in cold outside air for heat dissipation. In this mode, the heat exchange plate 25 and its related equipment stop operating, further reducing energy consumption and making full use of the low ambient temperature environment to achieve efficient cooling.

[0085] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A self-cooling structure for a magnetic levitation motor, characterized in that: include: The main body has an air duct inside, and a fan blade is connected to the left side of the main body's inner cavity. The circulation section includes a flow guide hood, which is fixedly connected to the left side of the main body and connected to the left end of the air duct. The outlet of the flow guide hood is connected to a three-way valve, which is connected to a heat exchange plate. The outlet of the heat exchange plate is connected to a diversion pipe, which is connected to the right end of the air duct. The switching part includes a sealing ring, which is fixedly connected to both ends of the split pipe. The inner cavity of the split pipe is provided with a slide rod, and both ends of the slide rod are fixedly connected with sealing gaskets. The sealing gaskets are in contact with one of the two sets of sealing rings. The sliding rod moves to switch the switching part to three states. The first state is when the sliding rod moves to the middle of the diversion pipe and the sealing gaskets at both ends do not contact any sealing ring. At this time, the inlet of the diversion pipe and the pipe opening connected to the outside are both in the open state. Second state: The slide bar moves to the point where the sealing gasket contacts the front sealing ring. At this time, the inlet of the diversion pipe opens and the pipe opening connected to the outside closes. Third state: The slide bar moves until the sealing gasket contacts the sealing ring on the rear side. At this time, the inlet of the diversion pipe is closed and the pipe opening connected to the outside is opened.

2. The self-cooling structure of the magnetic levitation motor according to claim 1, characterized in that: An air duct is provided on the outer part of the main body cavity. The right end of the air duct passes through the main body. An air outlet is provided on the left side of the main body. The left end of the air duct is connected to the air outlet. A rotor is provided in the middle of the main body cavity. An output shaft is fixedly connected to the right end of the rotor. The output shaft is rotatably connected to the middle right side of the main body.

3. The self-cooling structure of the magnetic levitation motor according to claim 2, characterized in that: A heat pipe is fixedly connected to the inner cavity of the main body, and the heat pipe is set on the periphery of the rotor and placed in the inner cavity of the air duct. A fan blade is fixedly connected to the left end of the output shaft. The fan blade is rotatably connected to the left side of the inner cavity of the main body, and the left side of the fan blade is located at the left air outlet of the main body.

4. The self-cooling structure of the magnetic levitation motor according to claim 2, characterized in that: A dustproof net is fixedly connected to the main air outlet.

5. The self-cooling structure of the magnetic levitation motor according to claim 2, characterized in that: The air hood is fixedly connected to the air outlet on the left side of the main body. The circulation part also includes an air supply pipe, which is connected to the outlet of the air hood, and a three-way valve is connected to the outlet of the air supply pipe.

6. The self-cooling structure of the magnetic levitation motor according to claim 5, characterized in that: The three-way valve has three sets of ports, one of which is connected to the air supply pipe, one of which is connected to the exhaust pipe, and the last set is connected to the heat exchange plate. The exhaust pipe is located on the side of the three-way valve away from the main body.

7. The self-cooling structure of the magnetic levitation motor according to claim 1, characterized in that: Three sets of cooling fans A are fixedly installed on the rear side of the heat exchange plate. The inner cavity of the heat exchange plate has four sets of channels, and heat conduction grooves are opened between adjacent channels. The upper and lower ends of the heat conduction grooves penetrate the heat exchange plate, and cooling fans B are fixedly installed on the upper and lower ends of the heat conduction grooves. The right end of the heat exchange plate is connected to a split pipe, which separates two sets of pipes. Both sets of pipes are fixedly connected to the right side of the main body, and both sets of pipes are connected to the right end inlet of the air duct.

8. The self-cooling structure of the magnetic levitation motor according to claim 7, characterized in that: There are four sets of sealing rings, distributed on the left and right sides of the inner cavity of the two sets of pipes that connect the diversion pipe and the air duct. The sealing rings in each set of pipes are symmetrically arranged. A through hole is opened in the middle of each of the four sets of sealing rings to ensure the unobstructed flow of the diversion pipe.

9. The self-cooling structure of the magnetic levitation motor according to claim 8, characterized in that: Both sets of pipes in the shunt pipe are fixedly connected to collars, and both sets of collars are slidably connected to slide rods. Both ends of the slide rods are fixedly connected to sealing gaskets, and the sealing gaskets at both ends of the slide rods are in contact with one of the sealing rings on the front or rear side.

10. The self-cooling structure of the magnetic levitation motor according to claim 9, characterized in that: Both sets of slide rods are fixedly connected to drive rods at their rear ends. The drive rods are slidably connected to the middle of the rear side of the split tube and extend out of the split tube. A protective sleeve is provided in the middle of the rear side of the split tube, and an electric push rod is fixedly installed inside the sleeve. The output end of the electric push rod extends out of the sleeve and is fixedly connected to the middle of the drive rod. A temperature detector is fixedly installed on the upper end of the heat exchange plate.

Images