Self-heat-dissipation permanent magnet auxiliary synchronous reluctance motor

Abstract

The invention discloses a self-radiating permanent magnet auxiliary synchronous reluctance motor, which relates to the technical field of motors, and comprises a motor body, one end of the motor body is provided with a rear end cover, a rotating shaft main body is rotatably connected in the motor body, one end in the rear end cover is rotatably connected with a radiating fan, and one end of the radiating fan is fixedly connected with an insertion shaft. Through the arrangement of the heat dissipation protection mechanism, when high temperature and high pressure are generated in the motor body, the rear end cover is automatically pushed to slide through the pushing force of the high pressure in the motor body and the cooperation of the piston and the linkage column, and the annular net cover is located between the motor body and the rear end cover, so that heat dissipation is conducted on the interior of the motor body; the heat dissipation efficiency in the motor body is greatly improved, the situation that the motor body is damaged or exploded due to the fact that the interior of the motor body is overheated is prevented, the service life of the motor body is prolonged, and meanwhile the safety of the motor body in use is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a permanent magnet assisted synchronous reluctance motor with self-heat dissipation. Background Art

[0002] The permanent magnet assisted synchronous reluctance motor (PMaSynRM) is a motor that combines the advantages of permanent magnet synchronous motor and synchronous reluctance motor. It uses the magnetic field and reluctance effect generated by permanent magnets to improve the working efficiency and dynamic response capability of the motor. This motor has the characteristics of high power density, high efficiency, high cost performance and wide speed regulation range, so it has broad application prospects in electric vehicles, household appliances, industrial motors and other fields.

[0003] The working principle of the permanent magnet assisted synchronous reluctance motor is to generate torque through the magnetic pull generated by the change of magnetic resistance caused by the rotor in different positions. Compared with the traditional permanent magnet synchronous motor, it reduces the dependence on rare earth materials and reduces costs. And because there is no permanent magnet on the rotor, there is no risk of demagnetization, and the efficiency is more stable under long-term use.

[0004] In terms of design, the permanent magnet assisted synchronous reluctance motor needs to consider many aspects, including the shape, size, number of layers of the magnetic barrier and the material, size and amount of the permanent magnet to optimize the design in order to obtain the best electromagnetic performance. At the same time, it is also necessary to conduct in-depth research on the mechanical strength of the rotor and the temperature rise of the motor to ensure the long-term reliable operation of the motor.

[0005] When in use, most existing permanent magnet assisted synchronous reluctance motors use liquid cooling or air cooling for heat dissipation. However, some permanent magnet assisted synchronous reluctance motors are used in relatively harsh environments and will generate a large amount of heat. At this time, the heat inside the permanent magnet assisted synchronous reluctance motor cannot be discharged quickly through liquid cooling or air cooling, causing high temperature and high pressure inside the motor, which leads to reduced magnetic properties and reduced magnetic flux, thereby affecting the output torque and power of the motor. At the same time, high temperature will aggravate the thermal expansion and vibration inside the motor, thereby increasing the noise level, affecting the running smoothness and comfort of the motor, and even causing the motor to explode.

[0006] Therefore, the present invention proposes a self-heating permanent magnet assisted synchronous reluctance motor to solve the above problems. Summary of the invention

[0007] In view of this, the technical problem to be solved by the present invention is to propose a self-heating permanent magnet assisted synchronous reluctance motor to solve the problem that the high temperature generated by the prior art permanent magnet assisted synchronous reluctance motor cannot be discharged in time when used in harsh environments.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-heating permanent magnet assisted synchronous reluctance motor, comprising a motor body, a rear end cover is arranged at one end of the motor body, a rotating shaft body is rotatably connected inside the motor body, a cooling fan is rotatably connected inside one end of the rear end cover, a plug-in shaft is fixedly connected to one end of the cooling fan, the plug-in shaft is slidably plugged into the rotating shaft body, the rotating shaft body is rotatably plugged into one end of the rear end cover, and also includes: a heat dissipation protection mechanism, a fixed locking mechanism and a heat dissipation enhancement mechanism.

[0009] The heat dissipation protection mechanism and the heat dissipation enhancement mechanism are both used for heat dissipation of the motor body, and the fixed locking mechanism is used for locking the heat dissipation protection mechanism.

[0010] Preferably, the heat dissipation protection mechanism includes an annular mesh cover, which is fixedly connected to the side of the rear end cover close to the motor body, the outer surface of the motor body is symmetrically fixedly connected with a guide rail, and one end of the motor body close to the rear end cover is symmetrically provided with a slot, and the slot consists of a cylindrical groove and triangular grooves equidistantly provided.

[0011] Preferably, an L-shaped tube is symmetrically fixedly inserted into one end of the rear end cover close to the motor body, one end of the L-shaped tube passes through the outer surface of the rear end cover, a piston is slidably connected inside the L-shaped tube, one end of the L-shaped tube is fixedly connected to a support frame, a connecting column is slidably connected to one side of the support frame, one end of the connecting column is fixedly connected to the piston, and a compression spring is fixedly connected between the piston and the support frame.

[0012] Preferably, an insert cylinder is symmetrically fixedly inserted at one end of the rear end cover, a linkage column is slidably connected to one end of the insert cylinder, the linkage column and the L-shaped tube are slidably connected, a first return spring is fixedly connected between the linkage column and the insert cylinder, a triangular block is equidistantly slidably connected to the outer surface of the insert cylinder, and a connecting rod is rotatably connected between the triangular block and the linkage column.

[0013] Preferably, the inner surface of the L-shaped tube is slidably connected to a push rod, one side of the push rod is fixedly connected to a U-shaped connecting rod, one side of the U-shaped connecting rod is rotatably connected to a sliding block, the outer surface of the rear end cover is symmetrically rotatably connected to a torsion spring shaft, the outer surface of the torsion spring shaft is fixedly connected to a guide clamping rod, one end of the guide clamping rod is arranged to be arc-shaped, and the height of one end of the arc is greater than that of the other end.

[0014] Preferably, the insert cylinder and the triangular clamp block are both plugged into the slot, a second electrical contact is fixedly connected to one side of one of the support frames, a first electrical contact is fixedly connected to the top of one of the pistons, the linkage column is arranged in a hemispherical shape at one end of the L-shaped tube, the push rod is arranged in an arc shape close to the side of the linkage column, and the piston is arranged in an arc shape close to one end of the linkage column.

[0015] Preferably, the fixed locking mechanism includes a swivel, which is rotatably connected to the outer surface of the rear end cover, and the outer surface of the swivel is symmetrically provided with movable grooves, and the outer surface of the swivel is symmetrically fixedly connected with a limiting stop rod, and the outer surface of the swivel is threaded with a fixing bolt.

[0016] Preferably, the heat dissipation enhancement mechanism includes a connecting plate, which is fixedly connected to one end of the heat dissipation fan, and the outer surface of the connecting plate is equidistantly fixedly connected with protrusions, and one side of the inner cavity of the rear end cover is symmetrically fixedly connected with a pneumatic box, and a push-pull plate is slidably connected inside the pneumatic box, and a pressure rod is fixedly connected to the push-pull plate on the side close to the protrusion, and a second return spring is symmetrically fixedly connected between the push-pull plate and the pneumatic box.

[0017] Preferably, the outer surface of the rear end cover is fixedly connected with a blowing ring, one side of the pneumatic box is fixedly connected with a one-way air inlet valve, one side of the pneumatic box is symmetrically fixedly connected with a one-way air outlet valve, the top of the one-way air outlet valve is fixedly connected with a first air outlet pipe, the outer surface of the first air outlet pipe is fixedly connected with an electric valve, and one end of the electric valve is fixedly connected with a second air outlet pipe.

[0018] Preferably, the protrusion is arranged in a semicircular shape, the pressure rod is arranged in an arc shape close to the protrusion, a cavity is arranged inside the annular mesh cover, protective air holes are arranged equidistantly on the outer surface of the annular mesh cover, the second air outlet pipe is connected to the cavity of the annular mesh cover, and the first air outlet pipe is connected to the blowing ring.

[0019] Compared with the prior art, the present invention provides a self-heating permanent magnet assisted synchronous reluctance motor, which has the following beneficial effects: 1. Through the setting of the heat dissipation protection mechanism, when high temperature and high pressure are generated inside the motor body, the driving force of the high pressure inside the motor body is utilized, and the cooperation of the piston and the linkage column automatically pushes the rear end cover to slide, and the annular mesh cover is located between the motor body and the rear end cover, thereby dissipating the heat inside the motor body, greatly improving the heat dissipation efficiency inside the motor body, preventing the motor body from overheating and damaging the motor body or exploding, increasing the service life of the motor body, and improving the safety of the motor body when in use. At the same time, compared with the prior art, the triggering of the heat dissipation protection mechanism does not require the installation of a drive source, and there is no additional power consumption, which significantly reduces the energy consumption of the overall system and improves energy utilization efficiency.

[0020] 2. Through the setting of the heat dissipation protection mechanism, under normal circumstances, the rear end cover can be disassembled by simply rotating the swivel and pressing the U-shaped connecting rod, which improves the disassembly speed of the rear end cover. At the same time, when the heat dissipation protection mechanism is triggered, it is only necessary to simply press one end of the U-shaped connecting rod to rotate the guide clamping rod to complete the disassembly of the rear end cover. In the event of an emergency, the disassembly speed is faster. The combination of heat dissipation and explosion protection and disassembly can improve the emergency response speed, shorten the maintenance time, facilitate fault detection and repair, and enhance equipment safety.

[0021] 3. Through the setting of the heat dissipation enhancement mechanism, the motor body can not only dissipate heat through the heat dissipation fan under normal circumstances, but also through the setting of the air blowing ring, while the heat dissipation fan is dissipating heat, with the cooperation of the protrusion and the second return spring, the air flow can flow out continuously from the pneumatic box. Therefore, through the setting of the annular air blowing ring, the air flow on the outer surface of the motor body can be accelerated by the ejected air flow, the heat dissipation range is expanded, the heat dissipation layout is optimized, and with the cooperation of the protrusion and the second return spring, there is no need to install other drive sources, saving drive costs.

[0022] 4. When the heat dissipation protection mechanism is started, with the cooperation of the heat dissipation enhancement mechanism, the airflow in the pneumatic box can enter the annular mesh cover at the same time and be ejected from the protective air holes. The ejected airflow can accelerate the flow speed of the airflow at the annular mesh cover and increase the outward flow speed of the heat in the motor body. At the same time, through the setting of the protective air holes, the thrust generated by the ejected airflow can prevent external dust and impurities from approaching the annular mesh cover, preventing external dust and impurities from passing through the annular mesh cover into the motor body, thereby improving the safety and stability of the heat dissipation protection mechanism when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 It is a three-dimensional structural diagram of the rear end cover of the present invention.

[0025] Figure 3 It is a partial cross-sectional structural diagram of the motor body of the present invention.

[0026] Figure 4 It is a partial cross-sectional structural diagram of the rear end cover of the present invention.

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0028] Figure 6 It is a cross-sectional structural diagram of the inserting tube of the present invention.

[0029] Figure 7 It is a partial three-dimensional structural diagram of the rear end cover of the present invention.

[0030] Figure 8 It is a three-dimensional structural diagram of the interior of the rear end cover of the present invention.

[0031] Fig. 9 It is a three-dimensional structural diagram of the pneumatic box of the present invention.

[0032] Fig.10 This is a structural diagram of the annular mesh cover of the present invention when it slides.

[0033] Fig.11 It is a cross-sectional structural diagram of the motor body of the present invention.

[0034] In the figure: 1, motor body; 11, shaft body; 2, rear end cover; 21, cooling fan; 22, plug-in shaft.

[0035] 301, annular mesh cover; 302, guide rail; 303, slot; 304, L-shaped tube; 305, piston; 306, support frame; 307, connecting column; 308, compression spring; 309, insert cylinder; 310, linkage column; 311, first return spring; 312, triangular block; 313, connecting rod; 314, push rod; 315, U-shaped connecting rod; 316, slider; 317, torsion spring shaft; 318, guide clamping rod; 319, first electrical contact; 320, second electrical contact.

[0036] 401, swivel; 402, movable groove; 403, limit stop rod; 404, fixing bolt.

[0037] 501, connecting plate; 502, bump; 503, pneumatic box; 504, push-pull plate; 505, pressure rod; 506, second return spring; 507, blowing ring; 508, one-way air inlet valve; 509, one-way air outlet valve; 510, first air outlet pipe; 511, electric valve; 512, second air outlet pipe; 513, protective air hole. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0040] Embodiments of the present invention: Please refer to Figures 1 to 11As shown: In order to solve the problem mentioned in the technical solution, an embodiment of the present application provides a self-heating permanent magnet assisted synchronous reluctance motor, including a motor body 1, a rear end cover 2 is arranged at one end of the motor body 1, a rotating shaft body 11 is rotatably connected inside the motor body 1, a cooling fan 21 is rotatably connected inside one end of the rear end cover 2, a plug-in shaft 22 is fixedly connected to one end of the cooling fan 21, the plug-in shaft 22 is slidably plugged with the rotating shaft body 11, and the rotating shaft body 11 is rotatably plugged with one end of the rear end cover 2, and also includes: a heat dissipation protection mechanism, a fixed locking mechanism and a heat dissipation enhancement mechanism.

[0041] The heat dissipation protection mechanism and the heat dissipation enhancement mechanism are both used for heat dissipation of the motor body 1 , and the fixed locking mechanism is used for locking the heat dissipation protection mechanism.

[0042] The heat dissipation protection mechanism includes an annular mesh cover 301, which is fixedly connected to one side of the rear end cover 2 close to the motor body 1. A guide rail 302 is symmetrically fixedly connected to the outer surface of the motor body 1. A slot 303 is symmetrically opened at one end of the motor body 1 close to the rear end cover 2. The slot 303 consists of a cylindrical slot and triangular grooves equidistantly opened. An L-shaped tube 304 is symmetrically fixedly inserted at one end of the rear end cover 2 close to the motor body 1. One end of the L-shaped tube 304 passes through the outer surface of the rear end cover 2. A piston 305 is slidably connected in the L-shaped tube 304. One end of the L-shaped tube 304 is fixedly connected to a support frame 306. The support frame 3 A connecting column 307 is slidably connected to one side of 06, one end of the connecting column 307 is fixedly connected to the piston 305, a compression spring 308 is fixedly connected between the piston 305 and the support frame 306, one end of the rear end cover 2 is symmetrically fixedly inserted with an insert sleeve 309, one end of the insert sleeve 309 is slidably connected with a linkage column 310, the linkage column 310 and the L-shaped tube 304 are slidably connected, a first return spring 311 is fixedly connected between the linkage column 310 and the insert sleeve 309, a triangular block 312 is equidistantly slidably connected to the outer surface of the insert sleeve 309, and a connecting rod 313 is rotatably connected between the triangular block 312 and the linkage column 310.

[0043] The inner surface of the L-shaped tube 304 is slidably connected to a push rod 314, one side of the push rod 314 is fixedly connected to a U-shaped connecting rod 315, one side of the U-shaped connecting rod 315 is rotatably connected to a slider 316, the outer surface of the rear end cover 2 is symmetrically rotatably connected to a torsion spring shaft 317, the outer surface of the torsion spring shaft 317 is fixedly connected to a guide clamping rod 318, one end of the guide clamping rod 318 is set to an arc shape, and the height of one end of the arc is greater than the other end, the insert 309 and the triangular block 312 are both plugged into the slot 303, one side of one of the support frames 306 is fixedly connected to a second electrical contact 320, one of which A first electrical contact 319 is fixedly connected to the top of each piston 305, the linkage column 310 is located at one end of the L-shaped tube 304 and is set in a hemispherical shape, the push rod 314 is set in an arc shape close to the side of the linkage column 310, and the piston 305 is set in an arc shape close to the end of the linkage column 310. The fixed locking mechanism includes a swivel 401, which is rotatably connected to the outer surface of the rear end cover 2, and the outer surface of the swivel 401 is symmetrically provided with movable grooves 402. The outer surface of the swivel 401 is symmetrically fixedly connected to the limit stop rod 403, and the outer surface of the swivel 401 is threadedly inserted with a fixing bolt 404.

[0044] In the prior art, some permanent magnet assisted synchronous reluctance motors are used in relatively harsh environments and will generate a large amount of heat. At this time, the heat inside the permanent magnet assisted synchronous reluctance motor cannot be discharged quickly through liquid cooling or air cooling, so that high temperature and high pressure are generated inside the motor, which leads to a decrease in its magnetic properties and a decrease in magnetic flux, thereby affecting the output torque and power of the motor. At the same time, high temperature will aggravate the thermal expansion and vibration inside the motor, thereby increasing the noise level, affecting the running stability and comfort of the motor, and even causing the motor to explode. Compared with the prior art, the implementation of this embodiment dissipates heat inside the motor body 1, greatly improves the heat dissipation efficiency inside the motor body 1, prevents the motor body 1 from overheating and damaging the motor body 1 or exploding, improves the service life of the motor body 1, and improves the safety of the motor body 1 when in use. At the same time, compared with the prior art, the triggering of the heat dissipation protection mechanism does not require the installation of a drive source, and there is no additional power consumption, which significantly reduces the energy consumption of the overall system, improves energy utilization efficiency, facilitates fault troubleshooting and repair, and enhances equipment safety.

[0045] For further examples, please refer to Figures 1 to 11As shown: the heat dissipation enhancement mechanism includes a connecting plate 501, which is fixedly connected to one end of the heat dissipation fan 21, and a protrusion 502 is fixedly connected to the outer surface of the connecting plate 501 at equal distances, and a pneumatic box 503 is symmetrically fixedly connected to one side of the inner cavity of the rear end cover 2, and a push-pull plate 504 is slidably connected in the pneumatic box 503, and a pressure rod 505 is fixedly connected to the push-pull plate 504 near the protrusion 502. A second return spring 506 is symmetrically fixedly connected between the push-pull plate 504 and the pneumatic box 503, and an air blowing ring 507 is fixedly connected to the outer surface of the rear end cover 2. The air blowing ring 507 is equidistantly provided with air blowing holes on the side close to the rotating ring 401, and the height of the air blowing holes is higher than the rotating ring 401. When air is blown to the outer surface of the motor body 1, it will not be affected. The swivel 401 blocks, a one-way air inlet valve 508 is fixedly connected to one side of the pneumatic box 503, a one-way air outlet valve 509 is symmetrically fixedly connected to one side of the pneumatic box 503, a first air outlet pipe 510 is fixedly connected to the top of the one-way air outlet valve 509, an electric valve 511 is fixedly connected to the outer surface of the first air outlet pipe 510, and a second air outlet pipe 512 is fixedly connected to one end of the electric valve 511, the protrusion 502 is set to be semicircular, and the pressure rod 505 is set to be arc-shaped near the protrusion 502. A cavity is set inside the annular mesh cover 301, and protective air holes 513 are equidistantly opened on the outer surface of the annular mesh cover 301, the second air outlet pipe 512 is connected to the cavity of the annular mesh cover 301, and the first air outlet pipe 510 is connected to the blowing ring 507.

[0046] The implementation of this embodiment accelerates the air flow on the outer surface of the motor body 1, expands the heat dissipation range, optimizes the heat dissipation layout, and increases the speed of heat flowing outward from the motor body 1. At the same time, through the setting of the protective air holes 513, the thrust generated by the ejected airflow can prevent external dust and impurities from approaching the annular mesh cover 301, preventing external dust and impurities from passing through the annular mesh cover 301 and entering the motor body 1, thereby improving the safety and stability of the heat dissipation protection mechanism when in use.

[0047] The working principle of all the contents in the above embodiments is as follows: in the initial state: one end of the motor body 1 is in contact with one end of the rear cover 2, the plug-in shaft 22 is plugged into the shaft body 11, and the rotation of the shaft body 11 can drive the plug-in shaft 22 and the cooling fan 21 to rotate at the same time, the annular mesh cover 301 is located on the inner surface of one end of the motor body 1, and the motor body 1 and the cooling fan 21 are in a sealed state. At this time, one end of the guide clamping rod 318 is located in the guide rail 302, and the guide clamping rod 318 is located at the end of the guide rail 302 away from the rear cover 2 , the insert 309 and the triangular block 312 are plugged into the slot 303, the compression spring 308 is in a normal state, the second electrical contact 320 is not in contact with the first electrical contact 319, and the electric valve 511 is in a closed state. At this time, the pneumatic box 503 is connected to the blowing ring 507 through the one-way air outlet valve 509 and the first air outlet pipe 510, the first electrical contact 319 and the second electrical contact 320 can be electrically connected to the external controller, and the electric valve 511 is controlled to open and close by the external controller. At the same time, the external controller can be electrically connected to the external alarm.

[0048] The following is the working process of the heat dissipation protection mechanism and the fixed locking mechanism: During use, when the motor body 1 is used under normal conditions, the rotation of the heat dissipation fan 21 is sufficient to ensure the heat dissipation of the motor body 1. Therefore, the staff can rotate the swivel 401 to make the limit stop rod 403 rotate to the top of the connecting column 307, so that the connecting column 307 cannot slide upward, and at the same time, the connecting plate 501 is located at the bottom of the guide clamping rod 318, so that the guide clamping rod 318 cannot rotate, and then the fixing bolt 404 is rotated to make the fixing bolt 404 pass through the swivel 401 and abut against the outer surface of the rear end cover 2, thereby completing the fixation of the swivel 401, and then through the limitation of the swivel 401, the heat dissipation protection mechanism will not be triggered under normal conditions. At the same time, during transportation, the heat dissipation protection mechanism can also be locked in the above manner to prevent the heat dissipation protection mechanism from being accidentally triggered, thereby ensuring the stability of the transportation process.

[0049] When the motor body 1 needs to be used for a long time in a harsh environment and there is a risk of explosion, the fixing bolt 404 can be rotated in the opposite direction so that one end of the fixing bolt 404 cancels the contact with the outer surface of the rear end cover 2, and then the blowing ring 507 is rotated so that the limiting stop rod 403 is disengaged from the limit on the top of the connecting column 307, and the movable groove 402 is located at the bottom of one end of the guide clamping rod 318, and then the fixing bolt 404 is continued to be rotated to contact with the outer surface of the rear end cover 2, and the swivel ring 401 is fixed again.

[0050] Furthermore, when high temperature and high pressure are generated inside the motor body 1, due to the increase in the internal pressure of the motor body 1, the piston 305 and the connecting column 307 are pushed up through the L-shaped tube 304, and the piston 305 rises close to the hemispherical end of the linkage column 310, thereby pushing the linkage column 310 to move in the direction of the triangular block 312, so that the linkage column 310 pulls one end of the connecting rod 313, so that the connecting rod 313 rotates and pulls the triangular block 312 through its other end to slide into the insertion tube 309, thereby disengaging from the plug-in connection with the triangular groove of the slot 303. When the triangular block 312 is disengaged At the moment of leaving the triangular groove, the rear end cover 2 can be pushed to slide away from the motor body 1 under the push of the high pressure inside the motor body 1, and at the same time drive the guide clamping rod 318 to slide in the guide rail 302, the insert cylinder 309 to slide in the slot 303, and the plug-in shaft 22 to slide in the shaft body 11, so that the annular mesh cover 301 is separated from the inner surface of one end of the motor body 1. However, since one end of the guide clamping rod 318 is set to be arc-shaped, and the height of one end of the arc is greater than that of the other end, at this time, under the limit of the guide clamping rod 318, the guide clamping rod 318 will not be separated from the track of the guide rail 302. Fig.10 shown.

[0051] When the annular mesh cover 301 is separated from the inner surface of one end of the motor body 1, the annular mesh cover 301 is located between the motor body 1 and the rear end cover 2. Due to the setting of the annular mesh cover 301, the motor body 1 and the rear end cover 2 are no longer in a completely sealed state. The high temperature and high pressure in the motor body 1 can be quickly discharged through the annular mesh cover 301, avoiding excessive heat accumulation in the motor body 1, the risk of damaging the internal components of the motor body 1 or even the risk of explosion.

[0052] It should be noted that, when the annular mesh cover 301 is separated from the inner surface of one end of the motor body 1, when the annular mesh cover 301 is located between the motor body 1 and the rear end cover 2, the air pressure inside the motor body 1 will drop. At this time, under the rebound of the compression spring 308, the piston 305 and the connecting column 307 will be pushed to slide downward and reset. At this time, since the annular mesh cover 301 has been separated from the inner surface of one end of the motor body 1, even if the piston 305 is reset, it will not affect the state of the heat dissipation protection mechanism. When the rear end cover 2 needs to be disassembled under normal circumstances of the motor body 1, the swivel 401 can be rotated first so that the movable groove 402 is at one end of the guide clamping rod 318. At the same time, the limit stop rod 403 disengages from the limit on the compression spring 308, and then presses the U-shaped connecting rod 315, so that the U-shaped connecting rod 315 drives the push rod 314 to descend and squeezes the linkage column 310, so that the triangular block 312 slides into the insertion tube 309, and at the same time, the other end of the U-shaped connecting rod 315 pushes the slider 316, so that the slider 316 pushes the guide clamping rod 318 to rotate, the torsion spring shaft 317 twists, and the guide clamping rod 318 is tilted close to one end of the guide rail 302 and disengaged from the guide rail 302. At this time, the rear end cover 2 can be pulled to complete the separation work of the rear end cover 2 and the motor body 1, so that the motor body 1 can be inspected and repaired.

[0053] Please refer to the above working process Figures 1 to 11 .

[0054] The following is the working process of the heat dissipation enhancement mechanism: when the motor body 1 is in a normal state, the motor body 1 is energized to drive the shaft body 11 to rotate, and the rotation of the shaft body 11 drives the plug-in shaft 22, the heat dissipation fan 21 and the connecting plate 501 to rotate, so that the protrusion 502 is close to one end of the pressure rod 505. Because the connecting plate 501 is semicircular, one end of the pressure rod 505 is arc-shaped, and then the arc-shaped end of the protrusion 502 squeezes the arc-shaped end of the pressure rod 505, so that the pressure rod 505 drives the push-pull plate 504 to slide toward the one-way air outlet valve 509, and the second return spring 506 is stretched. When the protrusion 502 is away from one end of the pressure rod 505, the second return spring 506 rebounds and pushes the pressure rod 505 and the push-pull plate 504 toward the protrusion. When the push-pull plate 504 slides upward, the air in the pneumatic box 503 can be pushed into the one-way air outlet valve 509 and the first air outlet pipe 510, and then transported to the blowing ring 507 through the one-way air outlet valve 509 and the first air outlet pipe 510, and finally ejected through the blowing hole of the blowing ring 507, and when the push-pull plate 504 moves toward the direction of the protrusion 502, the external air flow can re-enter the pneumatic box 503 through the one-way air inlet valve 508, thereby ensuring that the air flow can continuously flow out of the pneumatic box 503.

[0055] When the motor body 1 reaches a high temperature, the heat dissipation protection mechanism is activated, and the piston 305 slides upward to make the first electrical contact 319 and the second electrical contact 320 close to and contact each other, and then the signal generated during the contact can be transmitted to the external controller. After receiving the signal, the controller can quickly turn on the external alarm and control the electric valve 511 to start. When the electric valve 511 is started, the pneumatic box 503 is connected to the first air outlet pipe 510 and the first air outlet pipe 510 through the one-way air outlet valve 509, and is connected to the second air outlet pipe 512 and the annular mesh cover 301 through the electric valve 511. At this time, the airflow in the pneumatic box 503 can enter the annular mesh cover 301 from the electric valve 511 and the second air outlet pipe 512, and then the airflow is ejected through the protective air hole 513 on the annular mesh cover 301.

[0056] The staff can quickly discover the problem of overheating of the motor body 1 through the signal generated by the alarm, and thus make a response plan for the motor body 1 in time, thereby improving the safety of the motor body 1 when in use. At the same time, if the staff finds and needs to inspect the motor body 1, since the movable groove 402 is located at the bottom of one end of the guide clamping rod 318 at this time, the staff can press one end of the guide clamping rod 318 to make one end of the guide clamping rod 318 rotate toward the movable groove 402, and the other end rotates and disengages from the guide rail 302, and then pulls the rear end cover 2 to make the plug-in shaft 22 disengage from the shaft body 11, and the plug-in cylinder 309 disengages from the slot 303. At this time, the motor body 1 and the rear end cover 2 can be separated, so that the inside of the motor body 1 can be inspected and repaired, and when the rear end cover 2 needs to be installed, the plug-in cylinder 309 can be rotated relative to the guide rail 302, and then the rear end cover 2 can be pushed toward the motor body 1. The first reset spring 311 is automatically compressed until the triangular block 312 is aligned with the triangular groove of the slot 303. Under the rebound of the first reset spring 311, the triangular block 312 can be automatically inserted into the groove in the slot 303, thereby completing the clamping of the triangular block 312 and the insert tube 309 with the slot 303. At the same time, one side wall of the guide rail 302 will also push the arc surface of the guide clamping rod 318, so that the torsion spring shaft 317 is twisted, and the guide clamping rod 318 automatically rotates until one end of the guide clamping rod 318 is located at the guide rail groove of the guide rail 302. Under the rebound of the torsion spring shaft 317, one end of the guide clamping rod 318 automatically enters the guide rail groove of the guide rail 302, thereby completing the installation of the motor body 1 and the rear end cover 2.

[0057] Please refer to the above working process Figures 1 to 11 .

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-heating permanent magnet assisted synchronous reluctance motor, comprising a motor body (1), one end of the motor body (1) being provided with a rear end cover (2), a rotating shaft body (11) being rotatably connected inside the motor body (1), a cooling fan (21) being rotatably connected inside one end of the rear end cover (2), one end of the cooling fan (21) being fixedly connected with a plug-in shaft (22), the plug-in shaft (22) being slidably plugged with the rotating shaft body (11), and the rotating shaft body (11) being rotatably plugged with one end of the rear end cover (2), characterized in that: It also includes: a heat dissipation protection mechanism, a fixing and locking mechanism, and a heat dissipation enhancement mechanism; the heat dissipation protection mechanism and the heat dissipation enhancement mechanism are both used for dissipating heat from the motor body (1), and the fixing and locking mechanism is used for locking the heat dissipation protection mechanism.

2. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The heat dissipation protection mechanism comprises an annular mesh cover (301), the annular mesh cover (301) being fixedly connected to a side of the rear end cover (2) close to the motor body (1), a guide rail (302) being symmetrically fixedly connected to the outer surface of the motor body (1), and a slot (303) being symmetrically provided at one end of the motor body (1) close to the rear end cover (2), the slot (303) being composed of a cylindrical slot and triangular grooves provided at equal intervals.

3. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: An L-shaped tube (304) is symmetrically fixedly inserted at one end of the rear end cover (2) close to the motor body (1); one end of the L-shaped tube (304) passes through the outer surface of the rear end cover (2); a piston (305) is slidably connected inside the L-shaped tube (304); one end of the L-shaped tube (304) is fixedly connected to a support frame (306); a connecting column (307) is slidably connected to one side of the support frame (306); one end of the connecting column (307) is fixedly connected to the piston (305); and a compression spring (308) is fixedly connected between the piston (305) and the support frame (306).

4. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 3, characterized in that: An insert cylinder (309) is symmetrically fixedly inserted at one end of the rear end cover (2), a linkage column (310) is slidably connected to one end of the insert cylinder (309), the linkage column (310) is slidably connected to the L-shaped tube (304), a first return spring (311) is fixedly connected between the linkage column (310) and the insert cylinder (309), a triangular clamping block (312) is equidistantly slidably connected to the outer surface of the insert cylinder (309), and a connecting rod (313) is rotatably connected between the triangular clamping block (312) and the linkage column (310).

5. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 4, characterized in that: The inner surface of the L-shaped tube (304) is slidably connected to a push rod (314), one side of the push rod (314) is fixedly connected to a U-shaped connecting rod (315), one side of the U-shaped connecting rod (315) is rotatably connected to a sliding block (316), the outer surface of the rear end cover (2) is symmetrically rotatably connected to a torsion spring shaft (317), the outer surface of the torsion spring shaft (317) is fixedly connected to a guide clamping rod (318), one end of the guide clamping rod (318) is arranged in an arc shape, and the height of the arc end is greater than that of the other end.

6. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 5, characterized in that: The insert cylinder (309) and the triangular clamp block (312) are both plugged into the slot (303); a second electrical contact (320) is fixedly connected to one side of one of the support frames (306); a first electrical contact (319) is fixedly connected to the top of one of the pistons (305); the linkage column (310) is arranged in a hemispherical shape at one end of the L-shaped tube (304); the push rod (314) is arranged in an arc shape at one side close to the linkage column (310); and the piston (305) is arranged in an arc shape at one end close to the linkage column (310).

7. The self-heating permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The fixing locking mechanism comprises a rotating ring (401), the rotating ring (401) being rotatably connected to the outer surface of the rear end cover (2), the outer surface of the rotating ring (401) being symmetrically provided with movable grooves (402), the outer surface of the rotating ring (401) being symmetrically fixedly connected to a limit stopper rod (403), and the outer surface of the rotating ring (401) being threadedly plugged with a fixing bolt (404).

8. The self-heating permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: The heat dissipation enhancement mechanism comprises a connection plate (501), wherein the connection plate (501) is fixedly connected to one end of the heat dissipation fan (21), and the outer surface of the connection plate (501) is fixedly connected with protrusions (502) at equal intervals, and a pneumatic box (503) is symmetrically fixedly connected to one side of the inner cavity of the rear end cover (2), and a push-pull plate (504) is slidably connected inside the pneumatic box (503), and a pressure rod (505) is fixedly connected to the side of the push-pull plate (504) close to the protrusion (502), and a second return spring (506) is symmetrically fixedly connected between the push-pull plate (504) and the pneumatic box (503).

9. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 8, characterized in that: An air blowing ring (507) is fixedly connected to the outer surface of the rear end cover (2), a one-way air inlet valve (508) is fixedly connected to one side of the pneumatic box (503), a one-way air outlet valve (509) is symmetrically fixedly connected to one side of the pneumatic box (503), a first air outlet pipe (510) is fixedly connected to the top of the one-way air outlet valve (509), an electric valve (511) is fixedly connected to the outer surface of the first air outlet pipe (510), and a second air outlet pipe (512) is fixedly connected to one end of the electric valve (511).

10. A self-heating permanent magnet assisted synchronous reluctance motor according to claim 9, characterized in that: The convex block (502) is configured to be semicircular, the side of the pressure rod (505) close to the convex block (502) is configured to be arc-shaped, a cavity is provided inside the annular mesh cover (301), and protective air holes (513) are provided on the outer surface of the annular mesh cover (301) at equal intervals, the second air outlet pipe (512) is connected to the cavity of the annular mesh cover (301), and the first air outlet pipe (510) is connected to the blowing ring (507).

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