Driving permanent magnet synchronous motor with heat dissipation mechanism

Abstract

The invention discloses a driving permanent magnet synchronous motor with a heat dissipation mechanism, relates to the technical field of permanent magnet synchronous motors, and solves the problem that the motor is inconvenient to assemble, disassemble and maintain. And meanwhile, the problems of non-uniform distribution of a magnetic field in the motor, large operation noise of the motor and large vibration force are solved. The invention discloses a driving permanent magnet synchronous motor with a heat dissipation mechanism. The driving permanent magnet synchronous motor comprises an outer shell, the permanent magnet driving mechanism is mounted in the outer shell; and the cooling fan blades are mounted on the outer side of the bottom of the permanent magnet driving mechanism. According to the invention, high temperature generated by operation of the motor can be rapidly guided, the evacuation and heat dissipation range of high-temperature gas is expanded, the heat dissipation effect is enhanced, a better cooling effect is realized, and the probability of damage of internal units of the motor due to high temperature is reduced. And meanwhile, the permanent magnet in the motor can be conveniently disassembled and maintained, noise and vibration during operation of the motor are reduced, and the service life of the motor is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of permanent magnet synchronous motors, and particularly relates to a driving permanent magnet synchronous motor with a heat dissipation mechanism. BACKGROUND

[0002] A permanent magnet synchronous motor is a synchronous motor using a permanent magnet to generate a magnetic field, and the rotating speed of the rotor is always consistent with the current frequency of the stator winding. The permanent magnet synchronous motor is widely applied to industrial automation (numerical control machine tools, etc.), new energy vehicles (electric vehicle driving systems), and other fields (wind power generation, etc.).

[0003] The existing application with the application number CN119134782A discloses a heat dissipation device of a high-speed permanent magnet synchronous motor, which comprises a base, a protection structure is arranged on the base, an installation structure is arranged on the base, four positioning columns are fixedly connected to the base, a motor body is placed on the base, the four positioning columns are clamped between the base and the bottom end of the motor body, a heat dissipation structure is arranged on the base, a filtering structure is arranged on the heat dissipation structure, and a fixing structure is arranged on the heat dissipation structure. The heat dissipation structure can realize efficient and rapid heat dissipation of the motor body, thereby improving the heat dissipation effect, and the filtering structure can filter the air blown to the motor body during heat dissipation, thereby avoiding blowing dust in the air to the surface of the motor body during heat dissipation, and effectively ensuring the cleanliness of the surface of the motor body.

[0004] However, the permanent magnet synchronous motor has the following defects in specific use. 1. In actual operation, the existing permanent magnet synchronous motor is operated through the operation of the internal rotor (permanent magnet driving shaft rod) and the stator winding (coil). The stator winding of the traditional permanent magnet synchronous motor is driven to operate by the magnetic field generated by the permanent magnet arranged in the ring shape in the internal rotor (permanent magnet driving shaft rod). At this time, the traditional permanent magnet structure is not convenient to assemble and disassemble and maintain, and it is difficult to adjust the magnetic pole transition area, the generated magnetic field distribution is not uniform, the noise and vibration generated by the motor operation are large, the overall manufacturing cost is high, and the service life is short. 2. In operation, the existing permanent magnet synchronous motor generally has a cooling structure (heat dissipation fan blade) arranged in the internal rotor to cool the motor in operation. Although the traditional cooling structure can cool the high temperature in the internal rotor of the permanent magnet synchronous motor, the dust generated in the operation of the internal rotor of the permanent magnet synchronous motor is easily adhered to the heat dissipation channel opening position of the internal wall of the permanent magnet synchronous motor, which affects the normal discharge of the high temperature gas in the internal rotor of the permanent magnet synchronous motor. The high temperature is easily accumulated in the internal rotor of the permanent magnet synchronous motor, which accelerates the insulation aging of the permanent magnet synchronous motor, shortens the service life of the permanent magnet synchronous motor, and even causes insulation failure and short circuit failure. SUMMARY

[0005] The present application aims to provide a driving permanent magnet synchronous motor with a heat dissipation mechanism to solve the problems raised in the background art.

[0006] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions: The present application provides a driving permanent magnet synchronous motor with a heat dissipation mechanism, comprising: an outer shell; a permanent magnet driving mechanism installed inside the outer shell; a heat dissipation fan blade installed on the outside of the bottom of the permanent magnet driving mechanism; a reciprocating cleaning assembly connected to the outside of the heat dissipation fan blade and movably arranged at the bottom of the outer shell, The permanent magnet driving mechanism comprises: a permanent magnet assembly installed inside the outer shell; a permanent magnet driving shaft rod arranged at the center inside the permanent magnet assembly and extending to the outside; a driving fixed rail assembly sleeved on the outside of the permanent magnet driving shaft rod and connected to the front and rear sides of the permanent magnet assembly, Wherein, the outside of the bottom of the permanent magnet driving shaft rod is provided with a heat dissipation fan blade, and the top end of the permanent magnet driving shaft rod extends to the outside of the outer shell.

[0007] As a preferred scheme of the present application, the outer shell comprises: an intermediate shell; a tail heat dissipation shell installed on the outside of the bottom of the intermediate shell; a top cover installed at the center of the top of the intermediate shell, Wherein, the inside of the intermediate shell is fixedly assembled with a permanent magnet assembly, the inside of the tail heat dissipation shell is provided with a reciprocating cleaning assembly, the inside of the top cover is provided with a permanent magnet driving shaft rod, the inside of the tail heat dissipation shell is eccentrically provided with a plurality of heat dissipation tail holes, and the material of the side of the tail heat dissipation shell close to the heat dissipation fan blade is rubber.

[0008] As a preferred scheme of the present application, the permanent magnet assembly comprises: a side assembly plate installed inside the intermediate shell; a metal positioning ring abutting on the inside of the side assembly plate; a coil positioning sleeve ring fixedly connected on the inside of the metal positioning ring; a coil port opened at the eccentric position inside the metal positioning ring and the coil positioning sleeve ring; a permanent magnet coil penetrating through the coil port and connected inside the metal positioning ring and the coil positioning sleeve ring; a permanent magnet assembly sleeve arranged on the inside of the coil positioning sleeve ring; a permanent magnet installed at the eccentric position inside the permanent magnet assembly sleeve, Wherein, the inside of the permanent magnet assembly sleeve is provided with a permanent magnet driving shaft rod.

[0009] As a preferred scheme of the present application, the side assembly plate and the metal positioning ring are both provided with two, and the side of the side assembly plate away from the metal positioning ring is provided with a driving fixed rail assembly, Wherein, the two side assembly plates are connected and fixed by a bolt shaft, and the bolt shaft is installed at the included angle inside the side assembly plate.

[0010] As a preferred scheme of the present application, heat dissipation fins are installed between the two side assembling plates outside the coil positioning collar, and the heat dissipation fins are provided in multiple groups with gaps between the multiple groups of heat dissipation fins, Among them, a group of heat dissipation fins has gaps between multiple adjacent fins inside the group.

[0011] As a preferred scheme of the present application, the permanent magnet driving shaft rod is composed of a top driving metal rod, a middle permanent magnet metal rod, and a bottom heat dissipation metal rod, and the driving metal rod, the permanent magnet metal rod, and the heat dissipation metal rod are integrally injection molded, Among them, the inside of the top of the driving metal rod is provided with a key inner groove, the driving metal rod extends to the outside of the outer shell, the permanent magnet metal rod is arranged inside the coil positioning collar, and the outside of the heat dissipation metal rod is installed with heat dissipation fan blades.

[0012] As a preferred scheme of the present application, the driving track assembly comprises: a bearing sleeve installed inside the side assembling plate by a screw and provided with a permanent magnet driving shaft rod inside; a track sleeve ring installed on the side of the bearing sleeve by a screw and provided with a permanent magnet driving shaft rod inside; a rubber track ring installed inside the track sleeve ring and outside the permanent magnet driving shaft rod; a ball movably connected to the inner wall of the rubber track ring; a side protective cover installed on the side of the side assembling plate by a screw, Among them, the ball abuts against the outside of the permanent magnet driving shaft rod, and the ball is provided in multiple.

[0013] As a preferred scheme of the present application, the reciprocating cleaning assembly comprises: an annular tooth sleeve ring installed on the top outside of the heat dissipation fan blade; a driving gear meshedly connected to the outside of the annular tooth sleeve ring; a reciprocating screw rod movably arranged inside the tail heat dissipation shell and connected to the driving gear; a reciprocating sliding block connected to the outside of the reciprocating screw rod by a ball; a guide rod installed on the inner wall of the tail heat dissipation shell and slidably connected to the reciprocating sliding block; and rubber protrusions installed on the left and right sides of the reciprocating sliding block by clamping.

[0014] As a preferred scheme of the present application, the driving gear and the guide rod are provided in multiple, and the multiple guide rods are arranged outside the reciprocating screw rod, Among them, the rubber protrusions abut against the inner wall of the tail heat dissipation shell.

[0015] As a preferred scheme of the present application, the permanent magnet assembling sleeve is composed of multiple sub-assembling sleeves, and multiple alignment protrusions are installed at the edges outside the two adjacent sub-assembling sleeves, and multiple permanent magnets are arranged at the eccentric positions inside each sub-assembling sleeve, The outer wall of the sub-packaging sleeve is provided with an outer groove, and the outer groove is in communication with the coil port.

[0016] Compared with the prior art, the above one or more technical solutions have the following beneficial effects: 1. In the driving permanent magnet synchronous motor with the heat dissipation mechanism, when the stator (composed of permanent magnet coils and permanent magnet coils) inside the permanent magnet synchronous motor generates a magnetic field due to current and drives the permanent magnet drive shaft rod inside the stator to rotate, the permanent magnet coil is installed obliquely into the coil port inside the coil positioning sleeve, and through the design of the coil port structure, on the one hand, the permanent magnet coil set inside can be stably installed and fixed by cooperating with the metal positioning ring, so that the permanent magnet coil cannot deviate and shake. On the other hand, through the multiple annular coil ports, the high temperature (due to current) generated by the operation of the permanent magnet coil inside can be treated, so that the generated high temperature gas can be moved to the outside through the coil port and the heat dissipation fin, improving the efficiency of heat dissipation of the high temperature gas. At the same time, the design of the heat dissipation fin can also reduce the probability of dust and other impurities entering the inside of the heat dissipation fin, ensuring the safety of the magnetic field generation and current flow inside the heat dissipation fin;‌ 2. In the driving permanent magnet synchronous motor with the heat dissipation mechanism, when the rotor (permanent magnet drive shaft rod) inside the permanent magnet synchronous motor operates, the heat dissipation metal rod installed at the tail thereof rotates synchronously, drives the heat dissipation fan blade installed outside to operate, facilitates the transmission of the high temperature gas in the middle shell inside and the coil positioning sleeve outside to the outside of the tail heat dissipation shell, improves the efficiency of the high temperature gas emptying to the outside. On the other hand, the rotation of the heat dissipation fan blade can also drive the multiple rubber bumps connected through the gear meshing to move back and forth in the horizontal direction, vibrate the impurities adhered to the inner wall of the tail heat dissipation shell, avoid the blockage of the heat dissipation tail hole inside the tail heat dissipation shell by the accumulated impurities, and affect the normal exhaust of the high temperature gas;‌ 3. In the driving permanent magnet synchronous motor with the heat dissipation mechanism, when the multiple permanent magnets generating a magnetic field are assembled, the permanent magnet assembly sleeve installing the permanent magnets can be assembled together through multiple sub-packaging sleeves. Through the method of assembling and fixing the permanent magnets by multiple sub-packaging sleeves, on the one hand, it is convenient to adjust the transition area of the magnetic pole (permanent magnet), reduce the problem of uneven magnetic field distribution caused by irregular shape of the magnetic pole (permanent magnet), reduce the noise and vibration during operation of the permanent magnet synchronous motor, and prolong the service life. On the other hand, when the permanent magnets need to be disassembled and maintained, it is convenient to disassemble the permanent magnets at each damaged position, and it is more convenient to maintain the permanent magnets inside;‌ In the present application, the sub-packaging sleeves (constituting the permanent magnet assembly sleeve) assembled can be flexibly customized in size and number of permanent magnets according to the specific needs of the permanent magnet synchronous motor, and are suitable for permanent magnet synchronous motors with different power and speed; 4. In the drive permanent magnet synchronous motor with heat dissipation mechanism, the rotation of the rotor (permanent magnet drive shaft rod) is guided and positioned by assembling the fixed rail sleeve and the plurality of balls outside the rotating permanent magnet drive shaft rod, so that the rotor (permanent magnet drive shaft rod) only rotates in the horizontal direction, the rotation direction of the rotor (permanent magnet drive shaft rod) is constant, and the rotation of the internal rotor (permanent magnet drive shaft rod) of the permanent magnet synchronous motor is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of this specification are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute improper limitations on the present application.

[0018] In addition, the terms "mounting", "setting", "provided with", "connected", "connected", "sleeved", should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0019] Figure 1 is a structural schematic diagram of the whole structure of the present application; Figure 2 is a structural schematic diagram of the whole structure of the present application; Figure 3 is a structural schematic diagram of the whole structure of the present application; Figure 2 Figure 4 is a structural schematic diagram of the whole structure of the present application; Figure 5 is a structural schematic diagram of the whole structure of the present application; Figure 6 is a structural schematic diagram of the whole structure of the present application; Figure 7 is a structural schematic diagram of the whole structure of the present application; Figure 8 is a structural schematic diagram of the whole structure of the present application; Figure 7 Figure 9 is a structural schematic diagram of the whole structure of the present application; Figure 10 is a structural schematic diagram of the whole structure of the present application; Figure 11 is a structural schematic diagram of the whole structure of the present application; ​​Figure 12 is the exploded view of the dispensing sleeve and permanent magnet connection of the present application; In the figure: 10, outer shell; 101, middle shell; 102, tail heat dissipation shell; 1021, heat dissipation tail hole; 103, top cover; 20, permanent magnet driving mechanism; 201, permanent magnet assembly component; 202, permanent magnet driving shaft; 203, driving fixed rail component; 2011, side assembly plate; 20111, bolt shaft; 20112, heat dissipation fin; 2012, metal positioning ring; 2013, coil positioning ring; 2014, coil port; 2015, permanent magnet coil; 2016, permanent magnet assembly sleeve; 2017, permanent magnet; 2021, driving metal rod; 20211, key inner groove; 2022, permanent magnet metal rod; 2023, heat dissipation metal rod; 2031, bearing sleeve; 2032, fixed rail ring; 2033, rubber fixed rail ring; 2034, positioning metal ball; 2035, side protection cover; 30, heat dissipation fan blade; 40, reciprocating cleaning component; 401, annular toothed ring; 402, driving gear; 403, reciprocating screw rod; 404, reciprocating sliding block; 405, guide rod; 406, rubber bump; 50, dispensing sleeve; 501, alignment protrusion; 502, outer groove. DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0021] Embodiment one Please refer to Figures 1-11The utility model provides a drive permanent magnet synchronous motor with heat dissipation mechanism, including shell body 10, install permanent magnet drive mechanism 20 in the inside of shell body 10, install heat dissipation fan blade 30 on the bottom outside of permanent magnet drive mechanism 20, reciprocating cleaning assembly 40 is connected in the outside of heat dissipation fan blade 30 and is arranged in the bottom of shell body 10, permanent magnet drive mechanism 20 includes: install permanent magnet assembly component 201 in the inside of shell body 10, set up permanent magnet drive axle rod 202 at the inside center of permanent magnet assembly component 201 and extend to the outside, drive fixed rail assembly 203 is set in the outside of permanent magnet drive axle rod 202 and is connected in the front and rear of permanent magnet assembly component 201, wherein, the outside of the bottom of permanent magnet drive axle rod 202 is equipped with heat dissipation fan blade 30, and the top end of permanent magnet drive axle rod 202 extends to the outside of shell body 10.

[0022] In the utility model, permanent magnet drive axle rod 202 is composed of top drive metal rod 2021, middle permanent magnet metal rod 2022 and bottom heat dissipation metal rod 2023, and drive metal rod 2021, permanent magnet metal rod 2022 and heat dissipation metal rod 2023 are integrally injection molded, wherein the inside of the top of drive metal rod 2021 is provided with key inner groove 20211, drive metal rod 2021 extends to the outside of shell body 10, permanent magnet metal rod 2022 is arranged in the inside of coil positioning sleeve 2013, and the outside of heat dissipation metal rod 2023 is equipped with heat dissipation fan blade 30.

[0023] The above working principle: when assembling the permanent magnet synchronous motor, the assembled permanent magnet assembly component 201 drives the permanent magnet drive axle rod 202 inside it to rotate continuously and at high speed through the magnetic field drive, thereby driving the structure connected to the output end of the permanent magnet drive axle rod 202 to operate, realizing the normal operation of the permanent magnet synchronous motor. The design of the internal structure of the permanent magnet assembly component 201 can ensure its normal operation while guiding the high-temperature gas generated inside it, rapidly discharging the high-temperature gas inside the permanent magnet assembly component 201, and improving the efficiency of discharging and guiding the high-temperature gas inside the permanent magnet assembly component 201. At the same time, when the permanent magnet drive axle rod 202 operates, it can also drive the heat dissipation fan blade 30 to operate, rapidly move the guided high-temperature gas to the outside of the shell body 10, and realize the heat dissipation operation of the high-temperature gas. In addition, when the heat dissipation fan blade 30 rotates, it can also drive the reciprocating cleaning assembly 40 installed on the outside thereof to clean the impurities (dust, etc.) adhered to the inner wall of the shell body 10, reduce the blockage of the shell body 10 due to the blockage of the impurities (dust, etc.) in the heat dissipation position of the shell body 10, and affect the normal discharge of the impurities (dust, etc.).

[0024] Specific reference Figure 2 And Figure 4The shell body 10 comprises: a middle shell 101; a tail heat dissipation shell 102 mounted on the bottom outer side of the middle shell 101; and a top cover 103 mounted at the center of the top of the middle shell 101, wherein the inside of the middle shell 101 is fixedly assembled with a permanent magnet assembly 201, the inner side of the tail heat dissipation shell 102 is provided with a reciprocating cleaning assembly 40, the inside of the top cover 103 is provided with a permanent magnet driving shaft rod 202, the inside of the tail heat dissipation shell 102 is eccentrically provided with a plurality of heat dissipation tail holes 1021, and the side of the tail heat dissipation shell 102 close to the heat dissipation fan blade 30 is made of rubber.

[0025] In the driving permanent magnet synchronous motor with the heat dissipation mechanism, the detachable shell body 10 is simple and convenient to assemble the permanent magnet assembly 201 in the inside, and is also relatively simple and convenient to disassemble and maintain the permanent magnet assembly 201 in the inside.

[0026] With reference to Figure 6 , Figure 7 , Figure 8 and Figure 9 , the permanent magnet assembly 201 comprises: a side assembly plate 2011 mounted in the inside of the middle shell 101; a metal positioning ring 2012 abutting the inside of the side assembly plate 2011; a coil positioning sleeve ring 2013 fixedly connected to the inside of the metal positioning ring 2012; a coil port 2014 formed in the inside of the metal positioning ring 2012 and the coil positioning sleeve ring 2013; a permanent magnet coil 2015 penetrating through the coil port 2014 and connected to the inside of the metal positioning ring 2012 and the coil positioning sleeve ring 2013; a permanent magnet assembly sleeve 2016 arranged in the inside of the coil positioning sleeve ring 2013; and a permanent magnet 2017 mounted at the eccentric position in the inside of the permanent magnet assembly sleeve 2016, wherein the inside of the permanent magnet assembly sleeve 2016 is provided with the permanent magnet driving shaft rod 202.

[0027] In the scheme, the side assembly plate 2011 and the metal positioning ring 2012 are both provided with two, and the side away from the metal positioning ring 2012 of the side assembly plate 2011 is provided with a driving positioning assembly 203, wherein the two side assembly plates 2011 are connected and fixed by a bolt shaft 20111 mounted at the included angle in the inside of the side assembly plate 2011, and the heat dissipation fins 20112 outside the coil positioning sleeve ring 2013 are mounted between the two side assembly plates 2011, the heat dissipation fins 20112 are provided with multiple groups, and the heat dissipation fins 20112 in one group are provided with a plurality of adjacent fins with a hot gas moving gap therebetween.

[0028] In the driving permanent magnet synchronous motor with the heat dissipation mechanism, when the driving permanent magnet driving shaft rod 202 operates, first, a plurality of permanent magnets 2017 are assembled to the inside of the permanent magnet assembly sleeve 2016 and are sleeved on the outside of the permanent magnet driving shaft rod 202. Then, the coil positioning sleeve ring 2013 is assembled to the outside of the permanent magnet assembly sleeve 2016, and the permanent magnet coil 2015 is assembled and fixed in the inside of the metal positioning ring 2012 by means of the metal positioning ring 2012, so as to realize the assembly and fixing operation of the permanent magnet coil 2015. After the assembly of the permanent magnet coil 2015 is completed, the opposite side assembly plate 2011 is assembled, so that the permanent magnets 2017 arranged on the side of the side assembly plate 2011 can be stably and firmly assembled in the inside of the outer shell 10. The design of the coil port 2014 can assemble and fix the permanent magnet coil 2015 on the one hand, and can guide the high-temperature gas generated by the magnetic field in the inside on the other hand, and the structure of the heat dissipation fin 20112 can move the high-temperature gas to the outside of the coil positioning sleeve ring 2013, so as to increase the space size for guiding the high-temperature gas and realize the efficient high-temperature gas emptying operation. Moreover, the heat dissipation fin 20112 for emptying the high-temperature gas can also avoid the probability of external dust entering the inside of the heat dissipation fin 20112, so as to ensure the safety of the permanent magnet synchronous motor during operation.

[0029] With reference to Figure 10 , the driving track assembly 203 comprises: a bearing sleeve 2031 which is installed in the inside of the side assembly plate 2011 by means of a screw and is provided with the permanent magnet driving shaft rod 202 penetrating through the inside; a track sleeve ring 2032 which is installed on the side of the bearing sleeve 2031 by means of a screw and is provided with the permanent magnet driving shaft rod 202 penetrating through the inside; a rubber track ring 2033 which is installed in the inside of the track sleeve ring 2032 and is located on the outside of the permanent magnet driving shaft rod 202; a positioning metal ball 2034 which is movably connected to the inner wall of the rubber track ring 2033; and a side protective cover 2035 which is installed on the side of the side assembly plate 2011 by means of a screw, wherein the positioning metal ball 2034 abuts against the outside of the permanent magnet driving shaft rod 202, and the positioning metal ball 2034 is provided with a plurality of metal balls.

[0030] In the driving permanent magnet synchronous motor with the heat dissipation mechanism, when the permanent magnet driving shaft rod 202 rotates and operates due to the magnetic field, the rotation operation of the permanent magnet driving shaft rod 202 can be guided by the design of the bearing sleeve 2031 and the positioning metal ball 2034 on the outside of the permanent magnet driving shaft rod 202, so as to ensure that the permanent magnet driving shaft rod 202 can continuously rotate in the horizontal direction.

[0031] With reference to Figure 3 and Figure 5, the reciprocating cleaning assembly 40 comprises: an annular tooth ring 401 mounted on the top outer side of the heat dissipation fan blade 30; a drive gear 402 engaged and connected on the outer side of the annular tooth ring 401; a reciprocating lead screw 403 connected with the drive gear 402 and movably arranged inside the tail heat dissipation shell 102; a reciprocating sliding block 404 connected with the reciprocating lead screw 403 through balls; a guide rod 405 mounted on the inner wall of the tail heat dissipation shell 102 and slidably connected with the reciprocating sliding block 404; and rubber blocks 406 clamped and mounted on the left and right sides of the reciprocating sliding block 404.

[0032] In the scheme, the drive gear 402 and the guide rod 405 are provided with a plurality of guide rods 405, and the plurality of guide rods 405 are arranged on the outer side of the reciprocating lead screw 403, wherein the rubber blocks 406 are in abutment with the inner wall of the tail heat dissipation shell 102.

[0033] In the driving permanent magnet synchronous motor with a heat dissipation mechanism, when the heat dissipation fan blade 30 continuously rotates, the annular tooth ring 401 mounted on the outer side of the heat dissipation fan blade 30 rotates, so that the plurality of drive gears 402 engaged and connected on the outer side of the annular tooth ring 401 can rotate. At this time, the reciprocating lead screw 403 connected on the side of the drive gear 402 rotates, and the reciprocating sliding block 404 connected with the reciprocating lead screw 403 through balls moves horizontally (reciprocates) on the outer side of the guide rod 405. When the reciprocating sliding block 404 moves horizontally, the rubber blocks 406 mounted on the left and right sides of the reciprocating sliding block 404 reciprocate, and the inner wall of the tail heat dissipation shell 102 abutting the rubber blocks 406 vibrates, so that the tail heat dissipation shell 102 in an elastic state can vibrate, reducing the probability of dust and other impurities adhering to the inner wall of the tail heat dissipation shell 102.

[0034] Embodiment two In actual use, the permanent magnet synchronous motor in the scheme needs a plurality of permanent magnets 2017 arranged in a ring inside, which drives the permanent magnet drive shaft 202 arranged inside to rotate through the magnetic field generated by the plurality of permanent magnets 2017. At this time, the assembly and maintenance of the plurality of permanent magnets 2017 are not convenient, and it is difficult to adjust the magnetic pole transition area, the distribution of the magnetic field is not uniform, and the noise and vibration of the permanent magnet synchronous motor during operation are large.

[0035] Therefore, with reference to the specific Figure 12 The permanent magnet assembly sleeve 2016 is made in the form of a plurality of split sleeves 50 combined, and a plurality of alignment protrusions 501 are mounted at the edges of the outer sides of the adjacent two split sleeves 50. A plurality of permanent magnets 2017 are arranged at the eccentric positions inside each split sleeve 50, wherein an outer groove 502 is formed at the outer wall of the split sleeve 50, and a plurality of outer grooves 502 are arranged, and the outer grooves 502 are in communication with one coil port 2014.

[0036] In the driving permanent magnet synchronous motor with the heat dissipation mechanism, through the design of the bit protrusion 501, on the one hand, the stability of the plurality of disassembled sleeves 50 after assembly can be ensured, the magnetic repulsion of the magnetic field generated by the permanent magnet 2017 in the disassembled sleeve 50 is ensured, the plurality of disassembled sleeves 50 will not be displaced and shaken, and the relative stability of the internal magnetic field is ensured. At the same time, the plurality of permanent magnets 2017 are assembled and fixed in a disassembled manner, the permanent magnets 2017 can be divided into a plurality of magnetic tiles for separate processing and detection, the manufacturing cost and risk are significantly reduced. Moreover, it is convenient to adjust the transition area of the magnetic pole, reduces the problem of uneven magnetic field distribution caused by irregular magnetic pole shape, reduces the noise and vibration of the permanent magnet synchronous motor during operation. If the permanent magnet 2017 needs to be replaced or repaired, the assembly structure is easier to operate.

[0037] In the present application, through the design of the outer groove 502 structure, the activity space size of the external high-temperature gas circulation channel is expanded, and more efficient high-temperature gas flow operation is realized. The assembled permanent magnet 2017 can be customized in size and number according to the specific needs of the permanent magnet synchronous motor, and is suitable for the design of permanent magnet synchronous motors with different power and speed.

[0038] Therefore, any person skilled in the art within the technical range disclosed by the present application, according to the technical scheme and the inventive concept of the present application, can make equivalent replacement or change, which should be covered within the protection scope of the present application.

Claims

1. A drive permanent magnet synchronous motor with a heat dissipation mechanism, characterized in that, include: The outer casing (10); a permanent magnet drive mechanism (20) installed inside the outer casing (10); a heat dissipation fan blade (30) installed on the outer side of the bottom of the permanent magnet drive mechanism (20); and a reciprocating cleaning assembly (40) connected to the outer side of the heat dissipation fan blade (30) and movably disposed at the bottom of the outer casing (10). The permanent magnet drive mechanism (20) includes: a permanent magnet assembly (201) installed inside the outer shell (10); a permanent magnet drive shaft (202) located at the center inside the permanent magnet assembly (201) and extending to the outside; and a drive guide assembly (203) sleeved on the outside of the permanent magnet drive shaft (202) and connected to the front and rear sides of the permanent magnet assembly (201). The permanent magnet drive shaft (202) has a heat dissipation fan blade (30) installed on the outer side of its bottom, and the top of the permanent magnet drive shaft (202) extends to the outer side of the outer shell (10).

2. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 1, characterized in that: The outer casing (10) includes: an intermediate outer casing (101); a tail heat dissipation casing (102) installed on the outer side of the bottom of the intermediate outer casing (101); and a top cover (103) installed at the center of the top of the intermediate outer casing (101). The middle outer shell (101) is equipped with a permanent magnet assembly (201) inside, the tail heat sink (102) is provided with a reciprocating cleaning assembly (40) on the inner side, the top cover (103) is provided with a permanent magnet drive shaft (202) through it, the tail heat sink (102) has multiple heat dissipation tail holes (1021) at the eccentric part inside, and the material of the tail heat sink (102) near the heat dissipation fan blade (30) is rubber.

3. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 2, characterized in that: The permanent magnet assembly (201) includes: a side assembly plate (2011) installed inside the intermediate housing (101); a metal positioning ring (2012) abutting against the inner side of the side assembly plate (2011); a coil positioning collar (2013) snapped and fixed inside the metal positioning ring (2012); a coil opening (2014) opened at an eccentric position inside the metal positioning ring (2012) and the coil positioning collar (2013); a permanent magnet coil (2015) passing through the coil opening (2014) and connected inside the metal positioning ring (2012) and the coil positioning collar (2013); a permanent magnet assembly sleeve (2016) disposed inside the coil positioning collar (2013); and a permanent magnet (2017) installed at an eccentric position inside the permanent magnet assembly sleeve (2016). The permanent magnet assembly sleeve (2016) is internally equipped with a permanent magnet drive shaft (202).

4. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 3, characterized in that: Two side mounting plates (2011) and two metal positioning rings (2012) are provided. A drive rail fixing assembly (203) is provided on the side of the side mounting plate (2011) away from the metal positioning ring (2012). The two side mounting plates (2011) are connected and fixed by bolt shafts (20111), which are installed at the included angle inside the side mounting plates (2011).

5. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 3, characterized in that: A heat dissipation fin (20112) located outside the coil positioning collar (2013) is installed between the two side mounting plates (2011). Multiple sets of the heat dissipation fins (20112) are provided, with gaps between the sets of heat dissipation fins (20112). Among them, a group of heat dissipation fins (20112) has gaps between multiple adjacent fins for hot air movement.

6. A driving permanent magnet synchronous motor with a heat dissipation mechanism according to claim 3, characterized in that: The permanent magnet drive shaft (202) consists of a top drive metal rod (2021), a middle permanent magnet metal rod (2022), and a bottom heat dissipation metal rod (2023). The drive metal rod (2021), permanent magnet metal rod (2022), and heat dissipation metal rod (2023) are integrally injection molded. The driving metal rod (2021) has a key groove (20211) on the inner side of its top, the driving metal rod (2021) extends to the outer side of the outer shell (10), the permanent magnet metal rod (2022) is disposed inside the coil positioning collar (2013), and the heat dissipation metal rod (2023) has heat dissipation fan blades (30) installed on its outer side.

7. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 3, characterized in that: The drive rail assembly (203) includes: a bearing sleeve (2031) installed inside the side mounting plate (2011) by screws and passing through the permanent magnet drive shaft (202); a rail fixing ring (2032) installed on the side of the bearing sleeve (2031) by screws and passing through the permanent magnet drive shaft (202); a rubber rail fixing ring (2033) installed inside the rail fixing ring (2032) and located outside the permanent magnet drive shaft (202); a positioning metal ball (2034) movably connected to the inner wall of the rubber rail fixing ring (2033); and a side protective cover (2035) installed on the side of the side mounting plate (2011) by screws. The positioning metal ball (2034) abuts against the outside of the permanent magnet drive shaft (202), and multiple positioning metal balls (2034) are provided.

8. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 2, characterized in that: The reciprocating cleaning assembly (40) includes: an annular toothed collar (401) installed on the outer side of the top of the cooling fan blade (30); a drive gear (402) meshing with the outer side of the annular toothed collar (401); a reciprocating lead screw (403) connected to the drive gear (402) and movably disposed inside the tail heat sink (102); a reciprocating slider (404) connected to the outer side of the reciprocating lead screw (403) by ball bearings; a guide rod (405) installed on the inner wall of the tail heat sink (102) and slidably connected to the reciprocating slider (404); and rubber protrusions (406) snapped onto the left and right sides of the reciprocating slider (404).

9. A driving permanent magnet synchronous motor with a heat dissipation mechanism according to claim 8, characterized in that: Multiple drive gears (402) and multiple guide rods (405) are provided, and the multiple guide rods (405) are all located on the outside of the reciprocating lead screw (403). The rubber protrusion (406) abuts against the inner wall of the tail heat dissipation shell (102).

10. A drive permanent magnet synchronous motor with a heat dissipation mechanism according to claim 3, characterized in that: The permanent magnet assembly sleeve (2016) is composed of multiple sub-assembly sleeves (50), and multiple alignment protrusions (501) are installed on the outer edges of two adjacent sub-assembly sleeves (50). Multiple permanent magnets (2017) are provided at the eccentric part inside each sub-assembly sleeve (50). The outer wall of the packaging sleeve (50) is provided with an outer groove (502), and there are multiple outer grooves (502). The outer grooves (502) are connected to the coil opening (2014).

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