A permanent magnet assisted synchronous reluctance motor integrated machine with internal air cooling and heat dissipation structure

Abstract

The present invention discloses a permanent magnet assisted synchronous reluctance motor integrated machine with an internal air-cooling heat dissipation structure, which relates to the technical field of motors and comprises a rotor, wherein the rotor comprises an iron core assembly and an air-cooling assembly arranged on the iron core assembly, wherein the air-cooling assembly comprises a plurality of fan blade groups, and the plurality of fan blade groups are arranged along the circumference of the iron core assembly, and the fan blade group comprises a base, blades and bolts. The air-cooling assembly is driven by the rotation of the rotor to discharge the air flow inside the permanent magnet assisted integrated motor, thereby achieving heat dissipation and cooling of the permanent magnet assisted integrated motor and improving the performance of the permanent magnet assisted integrated motor. The blade angle is adjusted by the adjustable air-cooling assembly, so that the air-cooling assembly can adapt to the cavity environment of permanent magnet assisted integrated motors of different sizes, and can generate air volumes of different sizes according to the heat dissipation requirements of different permanent magnet assisted integrated motors, thereby achieving controllable air volume.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to an all-in-one permanent magnet assisted synchronous reluctance motor with an internal air-cooling heat dissipation structure. Background Art

[0002] A motor refers to an electromagnetic device that realizes electrical energy conversion or transmission based on the law of electromagnetic induction. It is divided into electric motors and generators. The permanent magnet assisted integrated motor adopts an integrated direct drive structure. The motor is directly connected to the load as a whole. Compared with ordinary motors, it has the advantages of improved motor efficiency, strong overload, reliable structure, reduced size, and reduced cost. In order to minimize the size of the permanent magnet assisted integrated motor to the greatest extent, the various structures of the permanent magnet assisted integrated motor are installed relatively tightly. Therefore, the permanent magnet assisted integrated motor is not easy to dissipate heat during operation, resulting in the permanent magnet assisted integrated motor easily generating excessive heat during daily operation. It is necessary to control the temperature rise of the permanent magnet assisted integrated motor to avoid the permanent magnet assisted integrated motor being affected by the high temperature generated during operation.

[0003] The existing technology generally uses an aluminum shell with a circulating water channel outside the outer diameter of the iron core of the permanent magnet assisted integrated motor. In this way, the heat generated on the winding is conducted by the winding to the stator core, and then conducted by the iron core to the aluminum shell. The heat is then taken out by the circulating water in the aluminum shell. The circulating water is connected to an external radiator, and a water pump is used to circulate water in the permanent magnet assisted integrated motor casing and the radiator, so that the heat in the permanent magnet assisted integrated motor winding is dissipated to the outside air through the radiator.

[0004] For example, the invention patent with publication number CN108736630A discloses a motor with a heat dissipation structure, including a rotor and a stator core. The rotor is inserted through the stator core and rotates in the stator core. A plurality of windings are arranged in the stator core, and heat sinks are arranged between adjacent windings. By adding heat sinks, the heat dissipation efficiency of the motor is improved, the current of the motor is increased during normal operation, and the power of the motor is increased. By adding through holes in the heat sink, air or coolant flows through the through holes, thereby increasing the contact area between the heat sink and the air or coolant, and improving the heat dissipation effect of the heat sink. Summary of the invention

[0005] Based on the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a permanent magnet assisted synchronous reluctance motor integrated machine with an internal air-cooling heat dissipation structure, which can dissipate heat and cool the permanent magnet assisted integrated motor, improve the performance of the permanent magnet assisted integrated motor, and adjust the blade angle through an adjustable air-cooling component, so that the air-cooling component can adapt to the cavity environment of permanent magnet assisted integrated motors of different sizes, and can generate different sizes of air volume according to the heat dissipation requirements of different permanent magnet assisted integrated motors, thereby realizing controllable air volume.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a permanent magnet assisted synchronous reluctance motor integrated machine with an internal air-cooling heat dissipation structure, including a rotor, the rotor including an iron core assembly, and an air-cooling assembly arranged on the iron core assembly, the air-cooling assembly including a plurality of fan blade groups, the plurality of fan blade groups are arranged along the circumference of the iron core assembly, the fan blade group includes a base, blades and bolt 1, an oblique elastic sheet is provided on the base, one end of the oblique elastic sheet is fixedly connected to the base, an extension portion is fixedly provided at one end of the blade, and the bolt 1 fixes the extension portion and the oblique elastic sheet.

[0007] Furthermore, the rotor also includes a hollow shaft and an annular fixed plate, the hollow shaft is arranged at the axis center of the core assembly, the annular fixed plate is fixed to one end of the core assembly and is coaxially arranged with the hollow shaft, an annular boss is fixed on the annular fixed plate, and the fan blade group includes bolt two, and the bolt two fixes the base on the annular boss.

[0008] Furthermore, the air cooling component also includes a pressure ring and bolt three, the pressure ring is arranged on the side of the fan blade group away from the annular boss, the pressure ring is provided with a through hole, the annular boss is provided with a threaded hole, and the bolt three passes through the through hole of the pressure ring and is threadedly engaged in the threaded hole of the annular boss.

[0009] Furthermore, it comprises a casing and a stator, wherein the stator is arranged on the outside of the rotor, and the casing is arranged on the outside of the stator and is fixedly connected to the stator.

[0010] Furthermore, a flange is fixed to one end of the casing, and one end of the hollow shaft away from the air cooling component is rotatably connected to the flange.

[0011] Furthermore, when the stator and the rotor are assembled, an air cooling channel is reserved between the two.

[0012] Furthermore, a plurality of air cooling grooves are provided on the inner side of the housing, so that there is a gap between the outer wall of the stator and the inner wall of the air cooling grooves.

[0013] Furthermore, the casing is penetrated by a plurality of through slots, the through slots are all located on the inner wall of the air cooling slot, and the through slots are located at one end of the casing close to the flange.

[0014] Furthermore, an end of the casing away from the flange is provided with a wind shield, and a ventilation net is provided on the wind shield.

[0015] Furthermore, a pair of supporting feet are provided on the outer side of the casing.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] 1. By providing a wind hood and a ventilation net on the wind hood, the hot air flow generated inside the permanent magnet assisted integrated motor can be discharged to the outside of the permanent magnet assisted integrated motor through the ventilation net of the wind hood, and the external cold air can enter the inside of the casing through the ventilation net of the wind hood, thereby realizing the initial heat dissipation of the permanent magnet assisted integrated motor.

[0018] 2. When the permanent magnet assisted integrated motor is running, the stator and rotor generate the most heat. By reserving an air cooling channel between the stator and the rotor when assembling the stator and the rotor, the hot air flow generated in the stator and the rotor can be dissipated outward through the air cooling channel when the permanent magnet assisted integrated motor is running, and finally dissipated to the outside of the casing through the ventilation net of the wind cover. Under this setting, the heat generated by the stator and the rotor can be dissipated faster.

[0019] 3. By opening an air cooling groove on the casing, when the permanent magnet assisted integrated motor is running, the heat generated in the stator can not only be discharged to the outside of the casing through the air cooling channel in the form of heat conduction and air flow, but also be dissipated to the outside from the air cooling groove, and can also be dissipated to the outside of the casing from the ventilation net of the wind cover.

[0020] 4. By opening a plurality of through slots on the bottom wall of the air cooling slot, the heat generated by the stator can be quickly discharged from the through slots to the outside of the casing, thereby improving its heat dissipation efficiency.

[0021] 5. By providing an air-cooling component, when the permanent magnet assisted integrated motor is running, the hollow shaft drives the core component, the annular fixed plate and the air-cooling component to rotate. When the air-cooling component rotates, air volume is generated at its blades, which can blow the hot air flow inside the permanent magnet assisted integrated motor through the air-cooling channel and the air-cooling groove to the through groove, and finally discharge it from the through groove to the outside of the casing.

[0022] 6. The air volume generated by the blades can not only directly cool down the stator and rotor of the permanent magnet assisted integrated motor, but also discharge the hot air flow inside the casing to the outside of the casing through the slots, significantly improving the heat dissipation efficiency of the permanent magnet assisted integrated motor and controlling the temperature rise rate of the permanent magnet assisted integrated motor, so that the permanent magnet assisted integrated motor is less affected by high temperature and its performance is guaranteed.

[0023] 7. When the temperature of the permanent magnet assisted integrated motor rises too quickly, and the existing number of fan blade groups in the air cooling component is insufficient to effectively control the temperature rise of the permanent magnet assisted integrated motor, more fan blade groups can be installed on the annular fixed disk, that is, more bases are installed on the annular fixed disk, and an extension part and blades fixedly connected to the extension part are installed on each added base. When the number of blades is large, the air volume generated by their rotation will be greater, which can enhance the cooling effect on the inside of the permanent magnet assisted integrated motor.

[0024] 8. If the existing number of fan blade groups in the air-cooling component is fully capable of controlling the temperature rise of the permanent magnet assisted integrated motor and the cooling effect exceeds expectations, the rotor of the permanent magnet assisted integrated motor can be relieved by removing part of the extension part and the blades fixedly connected to the extension part, so that the load of the rotor is reduced and its actual output power is greater. Similarly, when the cooling effect exceeds expectations, part of the fan blade group can be directly removed by removing the base, so that the load reduction effect of the rotor is better, the load of the rotor is reduced to a greater extent, and the actual output power of the rotor is increased.

[0025] 9. When the actual output power increases, the rotor speed is faster. Compared with when the rotor speed is slow, the air volume generated by a single blade will also increase significantly. Therefore, when the cooling effect exceeds expectations, even if some blades are removed or some fan blade groups are directly removed, the cooling effect of the air-cooling component will not fluctuate too much. It can still provide a large air volume to the permanent magnet assisted integrated motor, meet the internal heat dissipation requirements of the permanent magnet assisted integrated motor, and avoid the performance of the permanent magnet assisted integrated motor being limited due to excessive internal temperature.

[0026] 10. By providing an annular boss and installing the air-cooling component on the annular boss, a larger distance can be created between the blades of the air-cooling component and the end face of the annular fixed disk, so that when the air-cooling component rotates, the air volume generated by the blades can act on the interior of the casing of the permanent-magnet-assisted integrated motor over a large area, thereby enhancing the cooling effect of the air-cooling component and improving the efficiency of the air-cooling component in controlling the internal temperature rise of the permanent-magnet-assisted integrated motor.

[0027] 11. When the internal temperature of the permanent magnet assisted integrated motor rises too quickly, and the internal temperature rise control requirements of the permanent magnet assisted integrated motor cannot be met by increasing the number of fan blade groups to the maximum value, bolt three can be screwed to make the engagement between bolt three and the threaded hole on the annular boss tighter. Bolt three drives the pressure ring to press down toward the fan blade group, so that the blades in the fan blade group are compressed. The oblique elastic sheet is bent on the base due to the pressure of the blades, and the blades move accordingly. The angle between the blades and the axis of the permanent magnet assisted integrated motor rotor becomes larger. In this state, the air volume generated when the blades rotate is larger. Therefore, after the pressure ring presses down the blades, the entire air cooling assembly can generate a larger air volume when the rotor rotates, thereby enhancing the cooling effect of the air cooling assembly and improving the efficiency of the air cooling assembly in controlling the internal temperature rise of the permanent magnet assisted integrated motor.

[0028] 12. In addition to enhancing the cooling effect of the air-cooling component and improving the efficiency of the air-cooling component in controlling the internal temperature rise of the permanent magnet assisted integrated motor, the pressure ring pressing down the blades can also compress the overall height of the fan blade group, that is, the overall height of the air-cooling component will also be reduced. When the space inside the casing of the permanent magnet assisted integrated motor in which it is installed is small, this method can be used to reduce the overall height of the air-cooling component, so as to adapt to the casing with a smaller internal space.

[0029] 13. If the space inside the casing is sufficient to install the air-cooling component that is not pressed down by the pressure ring, and the number of fan blade groups installed at this time is sufficient to effectively control the temperature rise inside the permanent magnet assisted integrated motor, the pressure ring and bolt three can be removed to reduce the overall weight of the air-cooling component. Compared with the original, after it is installed on the rotor of the permanent magnet assisted integrated motor, it can reduce the load on the rotor, reduce the load on the rotor, and increase the actual output power of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is a three-dimensional schematic diagram of the permanent magnet assisted integrated motor in the present invention;

[0032] Figure 2 It is an exploded schematic diagram of the permanent magnet assisted integrated motor in the present invention;

[0033] Figure 3 yes Figure 1 A three-dimensional schematic diagram of a casing in FIG.

[0034] Figure 4 is a cross-sectional view of the permanent magnet assisted integrated motor of the present invention;

[0035] Figure 5 yes Figure 4 An enlarged schematic diagram of part A in FIG.

[0036] Figure 6 yes Figure 2 A three-dimensional schematic diagram of the rotor in FIG.

[0037] Figure 7 yes Figure 2 An exploded schematic diagram of the rotor in FIG.

[0038] Figure 8 yes Figure 7 An enlarged schematic diagram of the annular fixed disk in FIG.

[0039] Fig. 9 yes Figure 7 An exploded diagram of the air-cooled components in FIG.

[0040] Fig.10 yes Fig. 9 Explosion diagram of the wind blade group in FIG.

[0041] Fig.11 yes Figure 2 A three-dimensional schematic diagram of the wind shield in FIG.

[0042] In the figure:

[0043] 1. Casing;

[0044] 10. Air cooling slot; 11. Support feet;

[0045] 101, through slot;

[0046] 2. Flange;

[0047] 3. Wind hood;

[0048] 31. Ventilation network;

[0049] 4. Stator;

[0050] 5. Rotor;

[0051] 50. air cooling channel; 51. hollow shaft; 52. core assembly; 53. annular fixing plate; 54. air cooling assembly;

[0052] 531, annular boss; 541, pressure ring; 542, bolt three; 543, fan blade assembly;

[0053] 5310, threaded hole;

[0054] 5410, through hole;

[0055] 5431. base; 5432. oblique elastic sheet; 5433. bolt 2; 5434. extension portion; 5435. blade; 5436. bolt 1. DETAILED DESCRIPTION

[0056] The present invention will now be described in detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0057] See also Figure 1-Figure 11 The present invention provides a technical solution: a permanent magnet assisted synchronous reluctance motor integrated machine with an internal air-cooling heat dissipation structure, including a casing 1, a flange 2, a fan cover 3, a stator 4, and a rotor 5.

[0058] A flange 2 is fixed to one end of the casing 1 .

[0059] A pair of supporting feet 11 are provided on the outside of the casing 1, a plurality of air cooling grooves 10 are opened on the inside of the casing 1, and a plurality of through grooves 101 pass through the casing 1. The through grooves 101 are all located on the inner wall of the air cooling grooves 10, and the through grooves 101 are located at one end of the casing 1 close to the flange 2.

[0060] An end of the casing 1 away from the flange 2 is provided with a wind shield 3 , and a ventilation net 31 is provided on the wind shield 3 .

[0061] A stator 4 is fixed in the housing 1 , and there is a certain gap between the outer wall of the stator 4 and the inner wall of the air cooling slot 10 .

[0062] The stator 4 is provided with a rotor 5 inside. When the stator 4 and the rotor 5 are assembled, an air cooling channel 50 is reserved between the two.

[0063] The rotor 5 includes a hollow shaft 51 , an iron core assembly 52 , an annular fixing plate 53 and an air cooling assembly 54 .

[0064] One end of the hollow shaft 51 is rotatably connected to the flange 2 , and the hollow shaft 51 is disposed at the axis of the core assembly 52 .

[0065] The annular fixing plate 53 is fixed to one end of the core assembly 52 and is coaxially arranged with the hollow shaft 51 . An annular boss 531 is fixed to the annular fixing plate 53 , and a threaded hole 5310 is formed on the annular boss 531 .

[0066] The air cooling assembly 54 includes a pressure ring 541 , a bolt 542 and a plurality of fan blade groups 543 , and the plurality of fan blade groups 543 are arranged along the circumference of the core assembly 52 .

[0067] The fan blade assembly 543 includes a base 5431 , an oblique elastic sheet 5432 , a second bolt 5433 , a blade 5435 , an extension portion 5434 and a first bolt 5436 .

[0068] Bolt 2 5433 fixes the base 5431 on the annular boss 531 .

[0069] One end of the oblique elastic piece 5432 is fixedly connected to the base 5431 .

[0070] The extension portion 5434 is fixed to one end of the blade 5435 , and a bolt 5436 is used to fix the extension portion 5434 and the oblique elastic piece 5432 together.

[0071] The pressure ring 541 is arranged on a side of the fan blade assembly 543 away from the annular boss 531 . A through hole 5410 is opened on the pressure ring 541 . The bolt 3 542 passes through the through hole 5410 of the pressure ring 541 and is threadedly engaged in the threaded hole 5310 of the annular boss 531 .

[0072] Under normal use, the permanent magnet assisted integrated motor will generate high temperature inside, and the generated high temperature will affect the normal performance of the permanent magnet assisted integrated motor to a certain extent.

[0073] Embodiment 1:

[0074] By providing a wind hood 3 and a ventilation net 31 on the wind hood 3, the hot air flow generated inside the permanent magnet assisted integrated motor can be discharged to the outside of the permanent magnet assisted integrated motor through the ventilation net 31 of the wind hood 3, and the external cold air can enter the interior of the casing 1 from the ventilation net 31 of the wind hood 3, thereby realizing the initial heat dissipation of the permanent magnet assisted integrated motor.

[0075] In addition, when the permanent magnet assisted integrated motor is running, the stator 4 and the rotor 5 generate the most heat. By reserving an air cooling channel 50 between the stator 4 and the rotor 5 when assembling the stator 4 and the rotor 5, the hot air flow generated in the stator 4 and the rotor 5 when the permanent magnet assisted integrated motor is running can be dissipated outwardly through the air cooling channel 50, and finally dissipated to the outside of the casing 1 through the ventilation net 31 of the wind cover 3. Under this setting, the dissipation of the heat generated by the stator 4 and the rotor 5 can be accelerated.

[0076] In some of the embodiments, the ventilation net 31 is concavely arranged on the wind hood 3, that is, the plane where the ventilation net 31 is located is closer to the stator 4 and the rotor 5 inside the permanent magnet assisted integrated motor than the plane where the wind hood 3 is located. Therefore, when the permanent magnet assisted integrated motor is running, the heat generated on the stator 4 and the rotor 5 can be quickly discharged to the outside of the permanent magnet assisted integrated motor through the ventilation net 31 of the wind hood 3, thereby improving the efficiency of self-heat dissipation of the permanent magnet assisted integrated motor.

[0077] Compared with the prior art, the permanent magnet assisted integrated motor in this embodiment does not need to open a gap on the permanent magnet assisted integrated motor through a complicated structure to allow the permanent magnet assisted integrated motor to connect with the outside world. Only by providing a wind hood 3 and a ventilation net 31 on the wind hood 3, the heat generated on the stator 4 and the rotor 5 during the operation of the permanent magnet assisted integrated motor can be dissipated by itself. In addition, by arranging the ventilation net 31 inwardly on the wind hood 3, the efficiency of the self-heating of the permanent magnet assisted integrated motor can be improved.

[0078] Embodiment 2:

[0079] By opening an air cooling groove 10 on the casing 1, when the permanent magnet assisted integrated motor is running, the heat generated in the stator 4 can not only be discharged to the outside of the casing 1 through the air cooling channel 50 in the form of heat conduction and air flow, but also can be dissipated to the outside from the air cooling groove 10, and can also be dissipated to the outside of the casing 1 from the ventilation net 31 of the air cover 3.

[0080] In addition, by opening a plurality of through slots 101 on the bottom wall of the air cooling slot 10 , the heat generated by the stator 4 can be quickly discharged from the through slots 101 to the outside of the housing 1 , thereby improving the heat dissipation efficiency.

[0081] It can be understood that the thickness of the part of the casing 1 where the air cooling groove 10 is opened is smaller than the thickness of other parts. When the permanent magnet assisted integrated motor dissipates heat by itself, it is easy to use the thin wall of the air cooling groove 10 to dissipate heat to the outside of the casing 1 by heat conduction, and the efficiency of the permanent magnet assisted integrated motor's self-heating can also be improved.

[0082] Compared with the prior art, when the permanent magnet assisted integrated motor in this embodiment dissipates heat by itself, the hot air flow inside it has more than one heat dissipation outlet. By opening the air cooling groove 10, the hot air flow can be guided to flow toward the ventilation net 31 of the wind cover 3, and finally discharged to the outside of the casing 1. When the permanent magnet assisted integrated motor dissipates heat by itself, part of the heat will also flow toward the direction of the through groove 101 under the guidance of the air cooling groove 10, and finally be discharged to the outside of the casing 1 from the through groove 101. That is, the hot air flow is guided by the air cooling groove 10, and the hot air flow is discharged outward by the ventilation net 31 and the through groove 101. The thin wall of the air cooling groove 10 makes it easy to discharge the internal heat of the permanent magnet assisted integrated motor to the outside of the casing 1 by heat conduction, thereby improving the efficiency of self-heating of the permanent magnet assisted integrated motor.

[0083] Embodiment three:

[0084] By providing an air cooling component 54, when the permanent magnet assisted integrated motor is running, the hollow shaft 51 drives the core component 52, the annular fixed plate 53 and the air cooling component 54 to rotate. When the air cooling component 54 rotates, air volume is generated at its blades 5435, which can blow the hot air flow inside the permanent magnet assisted integrated motor through the air cooling channel 50 and the air cooling groove 10 to the through groove 101, and finally discharged from the through groove 101 to the outside of the casing 1.

[0085] The air volume generated by the blades 5435 can not only directly cool down the stator 4 and the rotor 5 of the permanent magnet assisted integrated motor, but also discharge the hot air flow inside the casing 1 to the outside of the casing 1 through the through groove 101, thereby significantly improving the heat dissipation efficiency of the permanent magnet assisted integrated motor and controlling the temperature rise rate of the permanent magnet assisted integrated motor, so that the permanent magnet assisted integrated motor is less affected by high temperature and its performance is guaranteed.

[0086] In addition, when the temperature of the permanent magnet assisted integrated motor rises too quickly, and the number of existing fan blade groups 543 of the air cooling component 54 is insufficient to effectively control the temperature rise of the permanent magnet assisted integrated motor, more fan blade groups 543 can be added to the annular fixed disk 53, that is, more bases 5431 are added to the annular fixed disk 53, and an extension portion 5434 and a blade 5435 fixedly connected to the extension portion 5434 are added to each added base 5431. When the number of blades 5435 is large, the amount of air generated by their rotation is also greater, which can enhance the cooling effect on the inside of the permanent magnet assisted integrated motor.

[0087] On the contrary, if the existing number of fan blade groups 543 of the air-cooling component 54 is fully capable of controlling the temperature rise of the permanent magnet assisted integrated motor and the cooling effect exceeds expectations, the rotor 5 of the permanent magnet assisted integrated motor can be relieved by removing part of the extension part 5434 and the blades 5435 fixedly connected to the extension part 5434, so that the load of the rotor 5 is reduced and its actual output power is greater. Similarly, when the cooling effect exceeds expectations, the base 5431 can be directly removed to remove part of the fan blade group 543, so that the load reduction effect of the rotor 5 is better, the load of the rotor 5 is reduced to a greater extent, and the actual output power of the rotor 5 is increased.

[0088] When the actual output power increases, the rotation speed of the rotor 5 is faster. Compared with when the rotation speed of the rotor 5 is slow, the air volume generated by a single blade 5435 will also increase significantly. Therefore, when the cooling effect exceeds expectations, even if some blades 5435 are removed or part of the fan blade group 543 is directly removed, the cooling effect of the air cooling component 54 will not fluctuate too much, and a large air volume can still be provided to the interior of the permanent magnet assisted integrated motor to meet the internal heat dissipation requirements of the permanent magnet assisted integrated motor and avoid the performance of the permanent magnet assisted integrated motor being limited due to excessive internal temperature.

[0089] It can be understood that by providing an annular boss 531 and installing the air cooling component 54 on the annular boss 531, a larger distance can be created between the blades 5435 of the air cooling component 54 and the end face of the annular fixed disk 53, so that when the air cooling component 54 rotates, the air volume generated by the blades 5435 can act on the interior of the casing 1 of the permanent magnet assisted integrated motor over a large range, thereby enhancing the cooling effect of the air cooling component 54 and improving the efficiency of the air cooling component 54 in controlling the internal temperature rise of the permanent magnet assisted integrated motor.

[0090] Compared with the prior art, the air cooling component 54 in this embodiment can adjust the air volume at any time according to the amount of heat generated inside the permanent magnet assisted integrated motor, that is, the air cooling component 54 rotates with the permanent magnet assisted integrated motor rotor 5. The faster the speed of the permanent magnet assisted integrated motor rotor 5, the higher the heat generated inside it. Relatively speaking, the higher the speed of the air cooling component 54, the higher the speed of the blades 5435 in the air cooling component 54, and the greater the air volume generated. The air volume of the air cooling component 54 is proportional to the speed of the rotor 5, and can effectively dissipate the changing heat inside the permanent magnet assisted integrated motor.

[0091] Furthermore, by configuring the fan blade group 543 of the air cooling component 54 to be an easily disassembled structure, a sufficient number of fan blade groups 543 can be assembled according to the heat dissipation requirements inside the permanent magnet assisted integrated motor, which can not only meet the heat dissipation requirements inside the permanent magnet assisted integrated motor, but also reduce the load on the rotor 5 of the permanent magnet assisted integrated motor. Under the condition of the same input power, the actual output power of the rotor 5 after the load reduction is greater than the actual output power before the load reduction.

[0092] Embodiment 4:

[0093] When the internal temperature of the permanent magnet assisted integrated motor rises too fast, and the internal temperature rise control requirement of the permanent magnet assisted integrated motor cannot be met by increasing the number of the fan blade group 543 to the maximum value, the bolt three 542 can be screwed to make the bolt three 542 and the threaded hole 5310 on the annular boss 531 more tightly engaged, and the bolt three 542 drives the pressure ring 541 to press downward in the direction of the fan blade group 543, so that the blades 5435 in the fan blade group 543 are pressed, and the oblique elastic sheet 5432 is pressed by the pressure of the blades 5435. , bends on the base 5431, and the blade 5435 moves accordingly, and the angle between the blade 5435 and the axis of the permanent magnet assisted integrated motor rotor 5 becomes larger. In this state, the air volume generated when the blade 5435 rotates is larger. Therefore, after the pressure ring 541 presses down the blade 5435, the entire air cooling component 54 can generate a larger air volume when it rotates with the rotor 5, thereby enhancing the cooling effect of the air cooling component 54 and improving the efficiency of the air cooling component 54 in controlling the internal temperature rise of the permanent magnet assisted integrated motor.

[0094] In addition, the pressure ring 541 presses down the blades 5435, which can not only enhance the cooling effect of the air-cooling component 54 and improve the efficiency of the air-cooling component 54 in controlling the internal temperature rise of the permanent magnet assisted integrated motor, but also compress the overall height of the fan blade group 543, that is, the overall height of the air-cooling component 54 will also be reduced. When the space inside the permanent magnet assisted integrated motor casing 1 in which it is assembled is small, this method can be used to reduce the overall height of the air-cooling component 54, so as to adapt to the casing 1 with a smaller internal space.

[0095] It can be understood that if the space inside the casing 1 is sufficient to install the air-cooling component 54 that is not pressed down by the pressure ring 541, and the number of the fan blade group 543 installed at this time is sufficient to effectively control the temperature rise inside the permanent magnet assisted integrated motor, the pressure ring 541 and the bolt three 542 can be removed to reduce the overall weight of the air-cooling component 54. Compared with the original, after it is installed on the rotor 5 of the permanent magnet assisted integrated motor, it can reduce the burden on the rotor 5, reduce the load on the rotor 5, and increase the actual output power of the rotor 5.

[0096] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the scope of the present invention through the above description. The technical scope of this invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A permanent magnet assisted synchronous reluctance motor integrated machine with an internal air cooling structure, characterized in that: The invention comprises a rotor, wherein the rotor comprises an iron core assembly, and an air cooling assembly arranged on the iron core assembly, wherein the air cooling assembly comprises a plurality of fan blade groups, wherein the plurality of fan blade groups are arranged along the circumference of the iron core assembly, wherein the fan blade group comprises a base, a blade and a first bolt, wherein an oblique elastic sheet is arranged on the base, wherein one end of the oblique elastic sheet is fixedly connected to the base, an extension portion is fixedly connected to one end of the blade, and the first bolt fixes the extension portion and the oblique elastic sheet; The rotor further comprises a hollow shaft and an annular fixing plate, wherein the hollow shaft is arranged at the axis center of the core assembly, the annular fixing plate is fixed to one end of the core assembly and is arranged coaxially with the hollow shaft, an annular boss is fixed on the annular fixing plate, and the fan blade assembly comprises a second bolt, and the second bolt fixes the base to the annular boss; The air cooling assembly further comprises a pressure ring and a third bolt, wherein the pressure ring is arranged on a side of the fan blade assembly away from the annular boss, a through hole is formed on the pressure ring, a threaded hole is formed on the annular boss, and the third bolt passes through the through hole of the pressure ring and is threadedly engaged in the threaded hole of the annular boss; It comprises a casing and a stator, wherein the stator is arranged outside the rotor, and the casing is arranged outside the stator and is fixedly connected to the stator; A flange is fixed to one end of the housing, and one end of the hollow shaft away from the air cooling component is rotatably connected to the flange; When the stator and the rotor are assembled, an air cooling channel is reserved between the two; A plurality of air cooling grooves are provided on the inner side of the housing so that there is a gap between the outer wall of the stator and the inner wall of the air cooling grooves; The housing is penetrated with a plurality of through slots, the through slots are all located on the inner wall of the air cooling slot, and the through slots are located at one end of the housing close to the flange.

2. The permanent magnet assisted synchronous reluctance motor integrated machine with an internal air cooling and heat dissipation structure according to claim 1, characterized in that: An end of the casing away from the flange is provided with a wind shield, and a ventilation net is provided on the wind shield.

3. The permanent magnet assisted synchronous reluctance motor integrated machine with an internal air cooling and heat dissipation structure according to claim 1, characterized in that: A pair of supporting feet are arranged on the outer side of the casing.

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