A rotor and a motor using the rotor

Abstract

The present invention discloses a rotor and a motor using the rotor, and relates to the technical field of motors. The rotor includes a rotating shaft and a rotor core, wherein the rotor core is sleeved on the rotating shaft, and there are two rotor cores in total, and the opposite surfaces of the two rotor cores are fixed with connecting plates, and a fixing seat is installed between the two connecting plates; a magnetic hole, wherein the magnetic holes are evenly arranged in the rotor core near the edge, and the magnetic holes are in an inverted "V" structure, and a second magnetic isolation hole is arranged between two adjacent magnetic holes, and a magnet is installed inside the magnetic hole; a first magnetic isolation hole, wherein the first magnetic isolation hole is opened in the rotor core and located at the apex of the magnetic hole. The rotor, through the symmetrical arrangement of the rotor core and the arrangement of the magnetic holes in the inverted "V" structure, makes the magnetic field generated by the magnet more uniform, the magnetic concentration ability stronger, and the magnetic density greater, further improving the stability of the rotor core during rotation and reducing the noise generated by the vibration of the rotor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a rotor and a motor using the rotor. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (also known as the stator winding) to generate a rotating magnetic field and acts on the rotor to form a magneto-electrodynamic rotating torque. Motors are divided into DC motors and AC motors according to the power supply used. The motor is mainly composed of a stator and a rotor. The direction of the force movement of the energized conductor in the magnetic field is related to the direction of the current and the direction of the magnetic flux lines (magnetic field direction). The working principle of the motor is the effect of the magnetic field on the force of the current, causing the motor to rotate.

[0003] With the increasing application requirements in various fields, motors are gradually developing towards high energy efficiency, low vibration and low noise. As a result, the demand for brushless motors in the market is gradually increasing. Brushless motors are composed of a motor body and a driver. They are a typical mechatronics product. Since brushless motors are operated in an automatic control mode, they do not require additional starting windings on the rotor like synchronous motors that are started under heavy load under variable frequency speed regulation, nor do they produce oscillations and loss of steps when the load changes suddenly.

[0004] For example, in the Chinese patent publication number CN114123568A, a rotor punching sheet, a motor rotor and a motor are disclosed. The device enables the motor rotor to have a better magnetic field line distribution, thereby solving the problem that the comprehensive indicators of the motor back electromotive force, motor efficiency, rotor iron loss and torque pulsation of the motor in the prior art are not ideal.

[0005] However, when the power or load of the motor is large, due to the high rotor speed, not only will the stability of the rotor decrease, but the rotor will also be easily damaged due to insufficient heat dissipation after working in this state for a long time, thereby affecting the use effect and service life of the motor rotor. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a rotor and a motor using the rotor, which solves the problems raised in the background technology.

[0007] To achieve the above objectives, on the one hand, the present invention provides a rotor, including a rotating shaft and a rotor core, wherein the rotor core is sleeved on the rotating shaft, and there are two rotor cores in total, and connecting plates are fixed on the opposite surfaces of the two rotor cores, and a fixing seat is installed between the two connecting plates; magnetic holes, which are evenly arranged in the rotor core near the edge, and the magnetic holes are in an inverted "V" structure, a second magnetic isolation hole is provided between two adjacent magnetic holes, and a magnet is installed inside the magnetic hole; a first magnetic isolation hole, which is opened in the rotor core at the vertex of the magnetic hole, and the line connecting the first magnetic isolation hole and the center of the rotor core coincides with the angular bisector of the magnetic hole.

[0008] Furthermore, an axial hole adapted to the rotating shaft is opened at the center of the first magnetic isolation hole, and the rotating shaft passes through the axial hole and penetrates the fixing seat and the connecting disk; the fixing seat and the connecting disk are evenly provided with flow holes adapted to the second magnetic isolation hole.

[0009] Furthermore, a fixing sleeve is symmetrically mounted on the rotating shaft, a positioning shaft is symmetrically mounted on the fixing sleeve, and positioning holes adapted to the positioning shaft are symmetrically opened on the rotor core.

[0010] On the other hand, the present invention also provides a motor, including a base, a shell fixed to the upper surface of the base, and a rotor, and also includes a stator, the stator is fixed inside the shell, and stator teeth are fixed at equal intervals on the inner wall of the stator, and coils are provided on the stator teeth; a heat pipe assembly, the heat pipe assembly is arranged inside the stator, the heat pipe assembly includes an evaporation section axially arranged inside the stator teeth and a condensation section arranged outside the shell, an insulation section penetrating the shell is provided between both ends of the condensation section and the evaporation section, and the insulation section, the evaporation section and the inner wall of the condensation section are provided with a liquid absorption core; expansion joints are provided on the evaporation section at equal intervals, heat conductive plates are radially provided on the condensation section, and an insulation sleeve is provided on the outside of the insulation section.

[0011] Furthermore, heat dissipation fins are installed at equal intervals on the outer side wall of the shell, and the heat dissipation fins are wrapped around the outside of the condensation section.

[0012] Furthermore, a front end cover is installed at one end of the shell, and a first bearing is provided at the connection between the front end cover and the rotating shaft.

[0013] Furthermore, a rear end cover is fixed to the other end of the shell, a protective cover is fixedly sleeved outside the rear end cover, and the other end of the rotating shaft extends to the inside of the protective cover and is equipped with a cooling fan.

[0014] Furthermore, a second bearing is provided at the connection between the rear end cover and the rotating shaft, and exhaust holes are opened on the rear end cover at equal intervals, and the exhaust holes are located in the gap between two adjacent heat dissipation fins.

[0015] Furthermore, a filter screen is installed at one end of the protective cover away from the shell, and the other end of the protective cover extends to the outside of the shell to form a guide ring.

[0016] Furthermore, a junction box is installed on the upper surface of the base, and the junction box is electrically connected to the coil.

[0017] The present invention has the following beneficial effects:

[0018] (1) The rotor, through the symmetrical arrangement of the rotor core and the arrangement of the magnetic holes in an inverted "V" structure, makes the magnetic field generated by the magnet more uniform, has a stronger magnetic field concentration ability, and a larger magnetic flux density, further improving the stability of the rotor core during rotation and reducing the noise generated by the rotor vibration.

[0019] (2) The rotor forms a closed loop of the main magnetic field of the motor by repelling each other through the opposing surfaces of the two magnets at both ends of the second magnetic isolation hole and the two magnets on the same axis. At this time, the magnetomotive force is large and the acting distance of the magnetic lines of force is far, which is beneficial to improving the stability of the rotor during rotation. In addition, the magnet distribution arrangement of adjacent magnet surfaces with the same polarity can enhance the magnetic field, so that it can be applied to larger currents, improve the speed range of the motor, and is not easy to demagnetize. In addition, the arrangement of the second magnetic isolation hole is beneficial to reducing the magnetic leakage phenomenon of the rotor and reducing the weight of the rotor core, so as to facilitate the high-speed rotation of the rotor core.

[0020] (3) The motor, through the setting of the evaporation section in the heat pipe assembly, allows the liquid inside the motor to quickly absorb heat and vaporize, thereby absorbing the heat energy generated on the stator teeth and accelerating the cooling of the motor. After the liquid inside the evaporation section is vaporized, it flows to the condensation section. At this time, the vapor temperature drops and liquefies, and then flows back to the evaporation section along the liquid absorption core, realizing the recycling of the liquid, which is beneficial to the continuous cooling of the motor.

[0021] (4) The motor improves the heat exchange effect between the condensing section and the heat dissipating fins by setting the heat conducting plate in the heat pipe assembly, thereby accelerating the cooling of the condensing section. The expansion joint can improve the heat exchange effect between the motor and the stator teeth, and can also store the liquid inside the expansion joint, thereby avoiding the difficulty of storing the liquid inside the heat pipe assembly located on the lower side of the shell.

[0022] (5) The motor drives the heat dissipation fan to rotate through the rotating shaft, thereby accelerating the air flow between two adjacent heat dissipation fins, improving the heat exchange effect between the heat dissipation fins and the air, further facilitating the cooling of the condensation section in the heat pipe assembly and improving the heat dissipation effect.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the installation structure of the rotor core in the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the rotor core in the present invention;

[0026] Figure 3 It is a schematic diagram of the planar structure of the rotor core in the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the fixing seat in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the motor in the present invention;

[0029] Figure 6 For the present invention Figure 5 Another perspective of the picture;

[0030] Figure 7 It is a schematic diagram of the installation structure of the heat dissipation fan in the present invention;

[0031] Figure 8 It is a schematic diagram of the installation structure of the stator in the present invention;

[0032] Fig. 9 It is a schematic diagram of the planar structure of the stator in the present invention;

[0033] Fig.10 It is a schematic diagram of the installation structure of the heat pipe in the present invention;

[0034] Fig.11 It is a schematic diagram of the structure of the heat pipe in the present invention;

[0035] Fig.12 Schematic diagram of the internal structure of the heat pipe in the present invention;

[0036] Fig.13 It is a cross-sectional view of the heat pipe in the present invention.

[0037] In the figure, 1, rotating shaft; 2, rotor core; 3, fixing seat; 4, connecting plate; 5, first magnetic isolation hole; 6, magnet; 7, second magnetic isolation hole; 8, fixing sleeve; 9, positioning shaft; 10, positioning hole; 11, shaft hole; 12, magnetic hole; 13, flow hole; 14, base; 15, shell; 16, front cover; 17, protective cover; 18, junction box; 19, heat dissipation fin; 20, filter; 21, rear cover; 22, exhaust hole; 23, heat dissipation fan; 24, stator; 25, stator teeth; 26, heat pipe assembly; 27, condensation section; 28, insulation section; 29, evaporation section; 30, expansion joint; 31, insulation sleeve; 32, thermal conductive sheet; 33, liquid absorption core. 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] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] See also Figure 1-Figure 4 On the one hand, the present invention provides a rotor, including a rotating shaft 1, and also including a rotor core 2, the rotor core 2 is sleeved on the rotating shaft 1, and there are two rotor cores 2. Through the arrangement of the two rotor cores 2, the magnetomotive force generated by the magnet 6 is large, and the magnetic force line has a long action distance, which is conducive to improving the stability of the rotor during rotation. In addition, in order to facilitate the connection of the two rotor cores 2, connecting plates 4 are fixed on the opposite surfaces of the two rotor cores 2, and a fixing seat 3 is installed between the two connecting plates 4. In order to facilitate the positioning of the rotor position, a Hall sensor can also be arranged on the connecting plate 4, and preferably the number of the Hall sensors is three. , and are evenly arranged on the periphery of the connecting disk 4. It is preferred that limiting grooves are opened on both sides of the fixing seat 3, and the connecting disk 4 is embedded in the limiting grooves. In addition, in order to improve the stability of the connection between the connecting disk 4 and the fixing seat 3, the connecting disk 4 and the fixing seat 3 can be optionally welded or glued. For high-speed motors, welding is preferred. Since the centrifugal force generated by high-speed motors is greater and the temperature rises faster when rotating, the welding stability is higher at this time. For low-speed motors, gluing is preferred. The cost of gluing is low, which is beneficial for manufacturers to reduce production costs. Low-speed motors generate less centrifugal force and lower heat energy, which is not enough to cause the glue to detach.

[0041] The rotor provided in this embodiment also includes magnetic holes 12, which are evenly arranged near the edge of the rotor core 2, and the magnetic holes 12 are in an inverted "V" structure. A second magnetic isolation hole 7 is provided between two adjacent magnetic holes 12, and a magnet 6 is installed inside the magnetic hole 12. The angle of the magnetic hole 12 is preferably between 135° and 155°, so that the magnetic concentration ability is stronger and the magnetic density is greater, which is beneficial to improving the efficiency of the motor. The opposite surfaces of the two magnets 6 at both ends of the second magnetic isolation hole 7 repel each other, and the two magnets 6 on the same axis repel each other to form a closed loop of the main magnetic field of the motor. At this time, the magnetic motive force is large and the action distance of the magnetic lines of force is far, which is beneficial to improving the stability of the rotor during rotation. Moreover, the distribution arrangement of magnets 6 with the same polarity on adjacent magnet surfaces can enhance the magnetic field, so that it can be applied to larger currents, improve the speed range of the motor, and is not easy to demagnetize. In addition, the arrangement of the second magnetic isolation hole 7 is beneficial to reducing the magnetic leakage phenomenon of the rotor and reducing the weight of the rotor core 2, so that the rotor core 2 can rotate at high speed.

[0042] In addition, the length, width and height of the magnet 6 are preferably smaller than those of the magnetic hole 12 . To prevent the magnet 6 from being damaged by centrifugal force, a rubber pad may be optionally provided at the connection between the side of the magnet 6 and the magnetic hole 12 .

[0043] Since the relevant technical requirements require that the size of the permanent magnet installed in the motor rotor core is consistent with the size of the motor rotor core assembly slot, and sufficient assembly clearance needs to be reserved between the permanent magnet and the assembly slot, but in practice, there is usually a situation where the assembly clearances reserved at different positions of the same permanent magnet are inconsistent. When the permanent magnet has a situation where the reserved assembly clearance is too small locally, if the permanent magnet is forcibly pressed into the assembly slot of the motor rotor core, the stress between the position where the permanent magnet assembly clearance is too small and the assembly slot is too concentrated, and the problem of damage to the permanent magnet and the assembly slot stress concentration position is likely to occur. When the permanent magnet has a situation where the reserved assembly clearance is too large locally, after the permanent magnet is installed in the assembly slot of the motor rotor core, the problem of the permanent magnet falling off is likely to occur due to the loose fit between the permanent magnet and the assembly slot. In view of this, the gap between the magnet 6 and the magnetic hole 12 is filled with glue to improve the stability of the magnet 6 after it is fixed, avoid the magnet 6 from being separated from the magnetic hole 12, and improve the stability of the rotor when it is used.

[0044] In addition, the rotor provided in this embodiment also includes a first magnetic isolation hole 5, which is opened in the rotor core 2 at the vertex of the magnetic hole 12. The setting of the first magnetic isolation hole 5 needs to give priority to ensuring the strength of the rotor core 2. Through the setting of the first magnetic isolation hole 5, the magnetic leakage phenomenon can be reduced, and the line connecting the center of the first magnetic isolation hole 5 and the rotor core 2 coincides with the angular bisector of the magnetic hole 12, so that the magnetic field generated by the magnet 6 is more uniform, so as to improve the stability of the rotor during rotation.

[0045] like Figure 1-Figure 4 As shown, in order to facilitate the connection between the rotor core 2 and the rotating shaft 1, an axial hole 11 adapted to the rotating shaft 1 is opened at the center of the first magnetic isolation hole 5. The rotating shaft 1 passes through the axial hole 11 and penetrates the fixing seat 3 and the connecting plate 4, which is conducive to the rotor core 2 driving the rotating shaft 1 to rotate.

[0046] In addition, to facilitate cooling inside the rotor core 2, flow holes 13 that are compatible with the second magnetic isolation hole 7 are evenly opened on the fixing seat 3 and the connecting plate 4. Through the cooperation between the flow holes 13 and the second magnetic isolation hole 7, flow can be achieved inside the rotor core 2, thereby reducing the temperature of the rotor core 2 during operation to the greatest extent and extending the service life of the rotor core 2.

[0047] like Figure 1-Figure 4As shown, in order to facilitate the fixation of the rotor core 2, a fixing sleeve 8 is symmetrically installed on the rotating shaft 1, a positioning shaft 9 is symmetrically installed on the fixing sleeve 8, and a positioning hole 10 adapted to the positioning shaft 9 is symmetrically opened on the rotor core 2. Preferably, a bushing is provided on the outer surface of the positioning shaft 9 to make an interference fit between the positioning shaft 9 and the positioning hole 10, thereby improving the connection strength between the positioning shaft 9 and the positioning hole 10, so as to improve the stability of the rotor core 2 when it is fixed.

[0048] In this embodiment, the positioning shaft 9 is driven to move by the fixing sleeve 8 so that the positioning shaft 9 is inserted into the positioning hole 10, thereby fixing the rotor core 2, avoiding deviation when the rotor core 2 rotates, and improving the stability of the rotor core 2 when it rotates. The connection between the fixing sleeve 8 and the rotating shaft 1 here can be selected as a bolt connection or a threaded connection. The threaded connection method requires rotating the mounting nut on the inner wall of the fixing sleeve 8, and opening a pipe thread on the rotating shaft 1. The fixing sleeve 8 can be installed and fixed by the cooperation between the nut and the internal thread. However, this threaded connection method is prone to loosening when the rotating shaft 1 rotates at a high speed. , which leads to a decrease in the connection stability between the positioning shaft 9 and the positioning hole 10. The bolt connection method requires that the first threaded holes are evenly opened on the outside of the fixing sleeve 8, and the second threaded holes are evenly opened on the rotating shaft 1. The fixing sleeve 8 and the rotating shaft 1 are fixedly connected by bolts threadedly connected with the first threaded holes and the second threaded holes. In addition, the bolt connection can also symmetrically open third threaded holes on the fixing sleeve 8, and open mounting holes on the rotating shaft 1. The bolts are inserted in turn from the third threaded holes on one side, the mounting holes, and the third threaded holes on the other side, and the two ends of the bolts are limited by nuts, so that the fixing sleeve 8 can be installed and fixed.

[0049] When in use (working), the magnet 6 is inserted and fixed inside the magnetic hole 12, the opposite surfaces of the two magnets 6 at the two ends of the second magnetic isolation hole 7 repel each other, and the two magnets 6 on the same axis are arranged to repel each other, so that the magnets 6 inside the rotor core 2 form a closed loop of the main magnetic field of the motor. At this time, the magnetic motive force is large and the action distance of the magnetic lines of force is far, which is beneficial to improve the stability of the rotor during rotation. Moreover, the distribution arrangement of the magnets 6 with the same polarity on the adjacent magnet surfaces can enhance the magnetic field, so that it can be applied to a larger current, improve the speed range of the motor, and is not easy to demagnetize. The two connecting plates 4 are fixed to the fixing seat 3, and the rotating shaft 1 is inserted into the shaft hole 11, and the fixing sleeve 8 is sleeved on the rotating shaft 1. The fixing sleeve 8 is slid along the rotating shaft 1 so that the positioning shaft 9 is inserted into the positioning hole 10, and the fixing sleeve 8 is further fixed, thereby realizing the fixation of the two rotor cores 2. In addition, through the cooperation between the flow hole 13 and the second magnetic isolation hole 7, the internal flow of the rotor core 2 can be realized, thereby minimizing the temperature of the rotor core 2 during operation to extend the service life of the rotor core 2.

[0050] like Figure 5-Figure 13As shown, on the other hand, the present invention further provides a motor, including a base 14, a housing 15 fixed to the upper surface of the base 14, the motor adopts the rotor in the first embodiment, and also includes a stator 24, the stator 24 is fixed inside the housing 15, and stator teeth 25 are fixed on the inner wall of the stator 24 at equal intervals, and coils are arranged on the stator teeth 25, and the main body of the stator teeth 25 is a non-parallel structure, that is, the two sides of the tooth body of the stator teeth 25 form a certain angle, and the closer to the stator yoke, the larger the tooth width is. This structure can prevent local oversaturation of magnetic density under load and improve the output torque of the motor, and on the other hand On the one hand, the area of ​​the stator teeth 25 can be increased to provide installation requirements for the coil. In addition, the side of the stator teeth 25 relative to the center of the shell 15 is an arc-shaped structure to cooperate with the outer circumference of the rotor to form a longer gap structure, which can increase the air gap magnetic density and improve the motor performance. In addition, the end face setting of the arc surface structure can reduce the harmonic content, reduce the vibration, noise and torque pulsation when the motor rotates at high speed, and improve the reliability and efficiency of the motor. In addition, to facilitate the positioning of the rotor position, a Hall sensor can also be set on the rotor. Preferably, the number of Hall sensors is three, and they are evenly arranged on the circumference of the rotor.

[0051] In addition, in order to reduce the temperature of the motor when it is working, the motor provided in this embodiment also includes a heat pipe assembly 26, which is arranged inside the stator 24 to cool the stator 24 and the inside of the outer shell 15. The heat pipe assembly 26 includes an evaporation section 29 axially arranged inside the stator teeth 25 and a condensation section 27 arranged on the outside of the outer shell 15. An insulation section 28 that passes through the outer shell 15 is provided between the two ends of the condensation section 27 and the evaporation section 29, and the inner walls of the insulation section 28, the evaporation section 29 and the condensation section 27 are provided with a liquid absorption core 33.

[0052] Preferably, the heat pipe assembly 26 is in a negative pressure state, and the heat pipe assembly 26 is filled with a proper amount of working liquid. Preferably, the working liquid is ether. Ether is highly volatile, which is conducive to the conversion of ether liquid phase to gas phase. In addition, ether has a sweet taste, which is conducive to rapid detection of its leakage.

[0053] In this embodiment, the coil on the stator tooth 25 generates heat when working, and the heat is transferred to the evaporation section 29 through the stator tooth 25. At this time, the temperature inside the evaporation section 29 rises to make the working fluid evaporate quickly. The principle of heat absorption from liquid phase to gas phase is utilized to achieve rapid heat dissipation of the stator teeth 25. At this time, the steam flows along the heat pipe assembly 26 to the condensation section 27, and the steam is condensed at the condensation section 27. The condensed working fluid flows back to the evaporation section 29 along the liquid absorption core 33, and this cycle is repeated, so that heat is transferred from the evaporation section 29 to the condensation section 27.

[0054] In order to avoid the difficulty in storing the working liquid inside the heat pipe assembly 26 located on the lower side of the shell 15, expansion joints 30 are provided at equal intervals on the evaporation section 29. Preferably, the expansion joints 30 are spherical structures, which is conducive to the storage of the working liquid inside the expansion joints 30. In addition, in order to improve the heat exchange between the condensation section 27 and the external structure, heat conducting plates 32 are radially provided on the condensation section 27. The provision of the heat conducting plates 32 is conducive to improving the heat exchange efficiency between the heat dissipating fins 19 and the condensation section 27, thereby accelerating the cooling of the condensation section 27, so that the condensation section 27 can quickly condense the steam. In addition, in order to avoid the overall temperature of the motor from increasing due to heat radiation, an insulating sleeve 31 is provided on the outside of the insulation section 28, which is conducive to the orderly transfer of heat energy.

[0055] like Figure 9-11 As shown, in order to facilitate the cooling of the condensation section 27, heat dissipation fins 19 are installed at equal intervals on the outer wall of the outer shell 15. The heat dissipation fins 19 are wrapped around the outside of the condensation section 27. The heat dissipation fins 19 are preferably made of aluminum alloy, which can not only protect the condensation section 27 to prevent the condensation section 27 from being damaged by external force impact, but also realize heat exchange between the condensation section 27 and the heat dissipation fins 19, thereby realizing heat exchange between the heat dissipation fins 19 and the external air, thereby improving the heat dissipation effect of the motor.

[0056] like Figure 5-Figure 7 As shown, in order to achieve the closure of both ends of the shell 15, a front end cover 16 is installed at one end of the shell 15. Preferably, the front end cover 16 and the shell 15 are connected by bolts, and a sealing strip is installed at the connection between the front end cover 16 and the shell 15 to improve the sealing effect of the shell 15 and prevent water stains and dust from penetrating into the interior of the shell 15. In addition, in order to facilitate the rotation of the shaft 1, a first bearing is provided at the connection between the front end cover 16 and the shaft 1, which is beneficial to the rotation of the shaft 1.

[0057] like Figure 5-Figure 7 As shown, in order to facilitate the closure of both ends of the shell 15, a rear end cover 21 is fixed to the other end of the shell 15, and the other end of the shell 15 is sealed by the rear end cover 21. Preferably, the rear end cover 21 and the shell 15 are fixed by welding. In addition, in order to achieve heat dissipation when the motor is working, a protective cover 17 is fixedly sleeved on the outer side of the rear end cover 21. The other end of the rotating shaft 1 extends to the inside of the protective cover 17 and is equipped with a cooling fan 23. When the rotating shaft 1 rotates, the cooling fan 23 is driven to rotate, and the cooling fan 23 is used to accelerate the air flow around the cooling fin plate 19, thereby achieving heat exchange between the cooling fin plate 19 and the air, which is beneficial to the rapid cooling of the cooling fin plate 19.

[0058] like Figure 5-Figure 7As shown, in order to facilitate the rotation of the shaft 1, a second bearing is provided at the connection between the rear end cover 21 and the shaft 1, which is beneficial to the rotation of the shaft 1. In addition, in order to facilitate the rapid cooling of the heat dissipation fins 19, exhaust holes 22 are evenly spaced on the rear end cover 21. The exhaust holes 22 are located in the gap between two adjacent heat dissipation fins 19. The setting of the exhaust holes 22 is beneficial for the heat dissipation fan 23 to output airflow to act on the gap between two adjacent heat dissipation fins 19, thereby accelerating the air flow around the heat dissipation fins 19 and realizing heat exchange between the heat dissipation fins 19 and air, which is beneficial to the rapid cooling of the heat dissipation fins 19.

[0059] like Figure 5 and Figure 6 As shown, in order to facilitate the input of air flow inside the protective cover 17, a filter 20 is installed at one end of the protective cover 17 away from the outer shell 15. The setting of the filter 20 is conducive to the input of air into the protective cover 17. In addition, in order to reduce the entry of dust into the protective cover 17, a dust net can be optionally installed on the outside of the filter 20. Preferably, an annular magnetic strip is set on the outer edge of the dust net. The magnetic attraction between the annular magnetic strip and the filter 20 is used to realize the loading and unloading of the dust net, which is beneficial to the dust prevention inside the protective cover 17. In order to guide the output airflow of the cooling fan 23, the other end of the protective cover 17 is extended to the outside of the outer shell 15 to form a guide ring, thereby avoiding the airflow radiating along the circumference of the outer shell 15 and causing a decrease in the heat dissipation effect, accelerating the air flow around the heat dissipation fins 19, and realizing the heat exchange between the heat dissipation fins 19 and the air, which is beneficial to the rapid cooling of the heat dissipation fins 19.

[0060] like Figure 5 and Figure 6 As shown, in order to facilitate the electrical connection of the motor, a junction box 18 is installed on the upper surface of the base 14. The junction box 18 is electrically connected to the coil and the Hall sensor to realize the power supply of the coil. In addition, a driver and a commutator are preferably installed inside the junction box 18. The Hall sensor is used to identify the phase position information of the motor coil and convert it into an electrical signal. The driver obtains the position information of the rotor by reading the electrical signal at the output end of the Hall element. The commutator completes the correct commutation according to the rotor position information of the motor, and supplies current to the corresponding winding of the motor to form an air gap rotating magnetic field to keep the motor running.

[0061] When in use (when working), the structural characteristics of the stator teeth 25 can, on the one hand, prevent local oversaturation of magnetic density under load conditions and improve the output torque of the motor. On the other hand, the area of ​​the stator teeth 25 can be increased to provide installation requirements for the coil. In addition, the side of the stator teeth 25 relative to the center of the shell 15 is an arc-shaped structure to match the outer circumference of the rotor to form a longer gap structure, which can increase the air gap magnetic density and improve the motor performance. In addition, the end face setting of the arc surface structure can reduce the harmonic content, reduce the vibration, noise and torque pulsation when the motor rotates at high speed, and improve the reliability and efficiency of the motor.

[0062] After power is turned on, the coil on the stator teeth 25 generates heat when working, and the heat is transferred to the evaporation section 29 through the stator teeth 25. At this time, the temperature inside the evaporation section 29 rises to make the working liquid evaporate quickly. The principle that the liquid phase needs to absorb heat to the gas phase is used to achieve rapid heat dissipation of the stator teeth 25. At this time, the steam flows along the heat pipe assembly 26 to the condensation section 27, and the steam condenses at the condensation section 27. The condensed working liquid flows back to the evaporation section 29 along the liquid absorption core 33. This cycle is repeated endlessly, so that the heat is transferred from the evaporation section 29 to the condensation section 27. The setting of the heat conductive sheet 32 ​​is beneficial to the heat dissipation fin plate 1 9 and the condensing section 27, thereby accelerating the cooling of the condensing section 27, so that the condensing section 27 can quickly condense the steam. In order to avoid the overall temperature increase of the motor caused by heat radiation, an insulating sleeve 31 is provided on the outside of the insulating section 28, which is conducive to the orderly transfer of heat energy. In addition, by arranging expansion joints 30 at equal intervals on the evaporating section 29, it can be avoided that the working liquid inside the heat pipe assembly 26 located on the lower side of the shell 15 is difficult to store, which is conducive to the storage of the working liquid inside the expansion joint 30 to facilitate the volatilization of the working liquid, thereby facilitating the circulation of the working liquid inside the heat pipe assembly 26.

[0063] In addition, the rotation of the rotor causes the shaft 1 to rotate. At this time, the rotation of the shaft 1 drives the cooling fan 23 to rotate, and the cooling fan 23 allows external air to enter the protective cover 17 through the filter 20. The exhaust hole 22 and the guide ring are arranged to guide the airflow output from the exhaust hole 22, so that the airflow output from the cooling fan 23 acts on the gap between two adjacent cooling fins 19, accelerating the air flow around the cooling fins 19, and realizing heat exchange between the cooling fins 19 and the air, which is beneficial to the rapid cooling of the cooling fins 19, and then beneficial to the cooling of the condensation section 27, so that the condensation section 27 can quickly condense the steam to realize the internal heat dissipation of the motor.

[0064] 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.

[0065] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rotor, comprising a rotating shaft (1), characterized in that: Also includes: A rotor core (2), the rotor core (2) being sleeved on the rotating shaft (1), and there being two rotor cores (2), with connecting plates (4) being fixed to opposite surfaces of the two rotor cores (2), and a fixing seat (3) being installed between the two connecting plates (4); Magnetic holes (12), the magnetic holes (12) being evenly arranged in the rotor core (2) near the edge, and the magnetic holes (12) being in an inverted "V" structure, a second magnetic isolation hole (7) being arranged between two adjacent magnetic holes (12), and a magnet (6) being installed inside the magnetic hole (12); A first magnetic isolation hole (5), the first magnetic isolation hole (5) being opened in the rotor core (2) and located at the vertex of the magnetic hole (12), and a line connecting the center of the first magnetic isolation hole (5) and the rotor core (2) and an angular bisector of the magnetic hole (12) being coincident; An axial hole (11) adapted to the rotating shaft (1) is formed at the center of the first magnetic isolation hole (5); the rotating shaft (1) passes through the axial hole (11) and penetrates the fixing seat (3) and the connecting plate (4); The fixing seat (3) and the connecting plate (4) are evenly provided with flow holes (13) adapted to the second magnetic isolation hole (7); The angle of the magnetic hole (12) is between 135° and 155°; The length, width and height of the magnet (6) are all smaller than those of the magnetic hole (12); a rubber pad is provided at the connection between the side of the magnet (6) and the magnetic hole (12); and the gap between the magnet (6) and the magnetic hole (12) is filled with glue; A fixing sleeve (8) is symmetrically mounted on the rotating shaft (1), a positioning shaft (9) is symmetrically mounted on the fixing sleeve (8), and a positioning hole (10) adapted to the positioning shaft (9) is symmetrically opened on the rotor core (2).

2. A motor, comprising a base (14), a housing (15) fixed to the upper surface of the base (14), and the rotor according to claim 1, characterized in that: Also includes: A stator (24), the stator (24) being fixed inside the housing (15), and stator teeth (25) being fixed at equal intervals on the inner wall of the stator (24), and coils being arranged on the stator teeth (25); A heat pipe assembly (26), the heat pipe assembly (26) being arranged inside the stator (24), the heat pipe assembly (26) comprising an evaporation section (29) axially arranged inside the stator teeth (25) and a condensation section (27) arranged outside the outer shell (15), an insulation section (28) penetrating the outer shell (15) being arranged between the two ends of the condensation section (27) and the evaporation section (29), and the inner walls of the insulation section (28), the evaporation section (29) and the condensation section (27) being provided with a liquid absorption core (33); Expansion joints (30) are provided at equal intervals on the evaporation section (29), heat conducting plates (32) are radially provided on the condensation section (27), and a heat insulating sleeve (31) is provided on the outer side of the heat insulating section (28).

3. A motor according to claim 2, characterized in that: Heat dissipation fins (19) are installed at equal intervals on the outer wall of the outer shell (15), and the heat dissipation fins (19) are wrapped around the outside of the condensation section (27).

4. A motor according to claim 3, characterized in that: A front end cover (16) is mounted on one end of the housing (15), and a first bearing is provided at the connection between the front end cover (16) and the rotating shaft (1).

5. A motor according to claim 4, characterized in that: A rear end cover (21) is fixed to the other end of the housing (15), a protective cover (17) is fixedly sleeved outside the rear end cover (21), and the other end of the rotating shaft (1) extends into the interior of the protective cover (17) and is provided with a heat dissipation fan (23).

6. A motor according to claim 5, characterized in that: A second bearing is provided at the connection between the rear end cover (21) and the rotating shaft (1), and exhaust holes (22) are provided on the rear end cover (21) at equal intervals, wherein the exhaust holes (22) are located in the gap between two adjacent heat dissipation fin plates (19).

7. A motor according to claim 6, characterized in that: A filter screen (20) is installed at one end of the protective cover (17) away from the outer shell (15), and the other end of the protective cover (17) extends to the outside of the outer shell (15) to form a guide ring.

8. A motor according to any one of claims 3 to 7, characterized in that: A junction box (18) is mounted on the upper surface of the base (14), and the junction box (18) is electrically connected to the coil.

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