A magnetically suspended power rotor system with a disk-type motor mid-drive and an aircraft thereof

Abstract

The invention discloses a magnetic levitation power rotor system with a disk motor central drive and an aircraft thereof, relates to the technical field of magnetic levitation rotors, and solves the technical problem of the existing lack of a magnetic levitation rotor structure with a more compact structure and lighter weight; the invention comprises a stator, a rotor ring and a plurality of blades, the stator comprises a central axis and limit plates mirror-set at the upper and lower ends of the central axis, and the plurality of blades are spaced apart and arranged on the outer wall of the rotor ring; the upper and lower limit plates and the rotor ring are provided with mutually cooperating axial support modules and rotation drive modules, the axial support module is used to generate an air gap between the limit plate and the rotor ring on the opposite side, and the rotation drive module is used to drive the rotor ring and the blades to rotate so as to provide lift; the purpose is to make the magnetic levitation rotor structure more compact and reduce the overall mass; the rotation drive module is driven by a circular permanent magnet brushless DC motor, and can make full use of the radial space of the stator compared with a traditional rotary motor.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic levitation rotors, and in particular relates to a magnetic levitation power rotor system with a disk motor mid-drive and an aircraft thereof. Background Art

[0002] At present, various applications of maglev technology are booming both at home and abroad, and the more mature applications are mainly concentrated in maglev trains. In recent years, with the continuous development of maglev technology, the application of maglev technology to rotorcraft has become a new design idea for rotorcraft.

[0003] The rotor device of a traditional rotorcraft consists of rotor blades, a hub, and a rotor shaft. The rotor blades are installed on the hub, and the hub is connected to the transmission system through the central rotor shaft. The driving force of the power system is transmitted to the rotor shaft through the transmission device after multi-stage gear transmission reduction, thereby driving the hub and rotor blades to rotate; the power of the conventional rotor device is mechanically converted and transmitted through the engine and transmission device, which has the problems of power loss and complex system; on the other hand, the traditional rotorcraft adopts a central shaft support, and the traditional mechanical bearing has friction and wear, which is difficult to meet the requirements of high-speed rotation of the rotor; the existing magnetic levitation rotor principle is mainly The magnetic levitation rotor ring composed of propeller blades and outer ring rotors is installed in the groove of the fuselage duct. Through the magnetic levitation support, the lift generated by the rotation of the rotor is transmitted to the outer ring through magnetic force, and then to the fuselage. The magnetic levitation technology is applied to the support of rotorcraft. The magnetic levitation support is mainly used in the high-speed field. This method solves the problem that conventional mechanical bearings cannot meet the performance requirements due to the high speed of the support, and the upper limit of the rotor ring speed is improved. In addition, due to the contactless and frictionless characteristics of the magnetic levitation support, the friction of the system is reduced, and the vibration of the system is theoretically eliminated, and the working efficiency of the rotorcraft is improved.

[0004] The current magnetic levitation rotor structure is relatively complex and has the problem of being heavy overall. There is a lack of a magnetic levitation rotor structure that is more compact and lighter. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a magnetic levitation power rotor system and an aircraft driven by a disk motor. The overall structure of the device adopts a method of wrapping the rotor with a central stator, which makes the magnetic levitation rotor structure more compact and reduces the overall mass; the rotary drive module is driven by a circular permanent magnet brushless DC motor, which can make full use of the radial space of the stator compared with the traditional rotary motor, effectively reduce the weight of the magnetic levitation rotor aircraft, and can provide greater lift and stability. The disk motor drive coil is energized to drive the magnet ring to rotate, driving the rotor ring to rotate, providing power for the rotation of the blades.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A magnetic levitation powered rotor system with a disk motor mid-drive comprises a stator, a rotor ring and a plurality of blades, wherein the stator comprises a central axis and an upper limit plate and a lower limit plate mirror-set at the upper and lower ends of the central axis, the rotor ring is distributed between the upper and lower limit plates and is coaxially arranged with the central axis, and a plurality of blades are arranged at intervals on the outer wall of the rotor ring; the upper and lower limit plates and the rotor ring are provided with axial support modules and rotation drive modules that cooperate with each other, the axial support module is used to generate an air gap between the limit plate and the rotor ring on the opposite side, and the rotation drive module is used to drive the rotor ring to rotate.

[0008] Furthermore, an axial air gap is controlled to be generated between the stator and the rotor ring, and the range of the axial air gap is 10±(10-2) mm.

[0009] Furthermore, the stator and rotor rings are both made of non-ferromagnetic materials with good thermal conductivity, preferably carbon fiber.

[0010] Preferably, the axial support module comprises an upper magnetic fitting part and a second magnetic part which cooperate with each other, the upper magnetic fitting part is embedded in the upper surface of the rotor ring, and the second magnetic part is embedded in the lower surface of the upper limit plate.

[0011] Preferably, the second magnetic member is an electromagnet, and the upper magnetic matching member is an iron ring;

[0012] Preferably, the second magnetic member is a permanent magnetic array, and the upper magnetic matching member is an induction rail;

[0013] Furthermore, the upper magnetic fitting part is flush with the surface of the rotor ring, and the second magnetic part is flush with the lower surface of the upper limit plate.

[0014] Preferably, the axial support module further includes a lower end magnetic fitting part and a third magnetic part that cooperate with each other, the lower end magnetic fitting part is embedded in the lower surface of the rotor ring, and the third magnetic part is embedded in the upper surface of the lower limit plate at the lower end.

[0015] Preferably, the third magnetic member is an electromagnet, and the lower end magnetic matching member is an iron ring;

[0016] Preferably, the third magnetic component is a permanent magnet array, and the lower end magnetic matching component is an induction rail.

[0017] Furthermore, the lower end magnetic matching piece is flush with the lower surface of the rotor ring, and the third magnetic piece is flush with the upper surface of the limiting plate.

[0018] Preferably, the axial support modules are multiple and are evenly distributed around the axis of the stator.

[0019] Furthermore, the number of the second magnetic members and the third magnetic members is n pairs, wherein n≤4, and each pair of the second magnetic members and the third magnetic members are spaced apart around the axis of the stator, and the spacing angle is 360° / n;

[0020] Furthermore, the number of the second magnetic members and the third magnetic members is preferably three pairs.

[0021] Furthermore, the volume of the second magnetic component is smaller than the volume of the third magnetic component.

[0022] Preferably, at least three first magnetic components are embedded on the central axis, and radial magnetic matching components matching with the first magnetic components are arranged on the ring wall of the rotor ring close to the central axis.

[0023] Preferably, the first magnetic member is an electromagnet, and the radial magnetic matching member is an iron ring;

[0024] Preferably, the first magnetic member adopts a permanent magnetic array, and the radial magnetic matching member adopts an induction rail;

[0025] Furthermore, a radial air gap is controlled to be generated between the stator and the rotor ring, and the range of the radial air gap is 5±(5-2) mm; the advantage of the radial air gap being smaller than the axial air gap is that the radial suspension control is relatively simple, and reducing the radial air gap can make the overall structure more compact, thereby effectively reducing the overall weight of the rotor system.

[0026] Furthermore, the number of the first magnetic members is n pairs, wherein n≤4, and the first magnetic members are spaced apart around the axis of the stator, and the spacing angle is 360° / n;

[0027] Preferably, the number of the first magnetic members is 4 pairs.

[0028] Preferably, the rotation drive module includes a disk motor drive coil and a magnet ring matching therewith, the disk motor drive coil is embedded in the upper surface of the rotor ring, the magnet ring is embedded in the lower surface of the upper limit plate, and the disk motor drive coil and the magnet ring are both coaxially arranged with the rotor ring.

[0029] Furthermore, the magnet ring adopts a permanent magnet.

[0030] Preferably, a plurality of rolling components are respectively provided on opposite sides of the upper and lower limit plates.

[0031] Furthermore, several of the rolling components adopt one or more of rollers or balls.

[0032] Furthermore, several of the rolling components use balls, which are embedded in the grooves and can roll freely, and the exposed amount of the balls is 2±0.2mm.

[0033] Preferably, a plurality of rolling assemblies are spaced apart on the side wall of the central axis.

[0034] Furthermore, several of the rolling components adopt one or more of rollers or balls.

[0035] Furthermore, several of the rolling components use balls, which are embedded in the grooves and can roll freely, and the exposed amount of the balls is 2±0.2mm.

[0036] Preferably, a plurality of gap sensors are arranged on a side of the stator close to the rotor ring, and the gap sensors are arranged at intervals around the axis of the stator.

[0037] Preferably, Venturi tubes are arranged at intervals on the rotor ring, and the Venturi tubes are symmetrically distributed along the central axis of the rotor ring.

[0038] Preferably, the structure of the venturi tube includes two truncated cone-shaped holes spliced ​​together up and down, the small ends of the two truncated cone-shaped holes are connected to each other, and the height of the truncated cone-shaped hole close to the upper surface of the rotor ring is greater than the height of the other truncated cone-shaped hole.

[0039] Preferably, the upper limit plate and the lower limit plate have one side close to the blade that is inclined and extends toward the blade to form a guide extension portion, and a gap is provided between the guide extension portion and the blade or the rotor ring, and the gap and the air gap formed between the stator and the rotor ring constitute a ducted cooling system.

[0040] The utility model relates to an aircraft, which comprises a magnetically suspended power rotor system driven by a disk-type motor in the middle.

[0041] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0042] 1. The overall structure of the device adopts a central stator to wrap the rotor and the blades are distributed on the outside, which makes the magnetic levitation rotor structure more compact and reduces the overall mass. The air gap connected to the outside and the outer blades drive the air flow to better achieve heat dissipation.

[0043] 2. At the same time, the use of better heat dissipation materials for the magnetic levitation stator and rotor ring can significantly improve the heat dissipation performance of the rotor, and the rated speed of the rotor ring can be higher, thereby providing greater lift and flight speed; and improving the heat dissipation performance can increase the life of the magnet and reduce the occurrence of demagnetization.

[0044] 3. When stationary, the rolling assembly on the lower limit plate can support the rotor ring, and the rolling assembly on the central axis can prevent the rotor ring from colliding and getting stuck with the inner side of the stator, giving the suspension controller buffer time.

[0045] 4. The second magnetic member generates an attractive force to attract the rotor ring to rise and separate from the rolling assembly on the lower limit plate, so that an axial gap is generated between the surface of the stator and the surface of the rotor ring, thereby achieving frictionless starting of the rotor.

[0046] 5. The rotary drive module is driven by a circular permanent magnet brushless DC motor. Compared with the traditional rotary motor, it can make full use of the radial space of the stator, effectively reduce the weight of the magnetic levitation rotorcraft, and provide greater lift and stability. The disc motor drive coil is energized to drive the magnet ring to rotate, driving the rotor ring to rotate, providing power for the blades to rotate.

[0047] 6. The second magnetic component cooperates with the upper magnetic matching component to generate the main suspension attraction, and the third magnetic component cooperates with the lower magnetic matching component to generate an auxiliary suspension force. Therefore, the volume of the second magnetic component is smaller than that of the third magnetic component; as the rotation speed increases, the lift generated by the blade increases, and in this process, the attraction generated by the second magnetic component is controlled to gradually decrease; when the lift generated by the blade is equal to the gravity of the rotating component itself, the attraction generated by the third magnetic component is controlled to gradually increase; the volume of the second magnetic component is smaller than that of the third magnetic component. For the setting of the stator wrapped rotor, the third magnetic component located below can play a major role, and the second magnetic component serves as an auxiliary. This setting reduces the overall weight while ensuring magnetic suspension control.

[0048] 7. The gap sensor is used to detect and feedback the gap between the rotor ring and the stator in real time, so as to adjust the gap between the rotor ring and the stator in real time to avoid collision.

[0049] 8. Compressed air enters the Venturi tube from the air gap between the rotor ring and the stator. When the compressed air enters from the inlet of the Venturi tube, it will pass through a gradually smaller channel. In this process, the flow rate of the compressed air will gradually increase, and the pressure will gradually decrease. The setting of the Venturi tube causes the rotor ring to be subjected to an additional lift.

[0050] 9. When the blade rotates, the airflow under the blade flows downward, and a positive pressure zone is generated through the guide extension on the lower left side of the stator, which guides the airflow from the gap at the guide extension to the air gap formed between the rotor ring and the stator. At the same time, a downward airflow is also generated on the upper part of the blade, and the guide extension on the upper left side of the stator generates a negative pressure zone, which attracts the airflow from the air gap formed between the rotor ring and the stator through the gap, and finally generates an airflow passage, which plays a role in cooling the entire disc motor drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0052] Figure 1 It is a structural schematic diagram of a magnetic levitation power rotor system with a centrally-driven disc motor and an aircraft thereof in the present invention;

[0053] Figure 2 is a schematic cross-sectional structural diagram of the stator and rotor ring in Example 1 of the present invention;

[0054] Figure 3 is a schematic cross-sectional structural diagram of a stator and a rotor ring in Embodiment 3 of the present invention;

[0055] Figure 4 It is a schematic cross-sectional structure diagram of a magnetically suspended rotor system with a centrally mounted disk motor drive and an aircraft thereof in the present invention;

[0056] Figure 5 is a schematic cross-sectional structural diagram of a stator in the present invention;

[0057] Figure 6 It is a schematic structural diagram of the guide extension portion in Example 4 of the present invention.

[0058] Reference numerals

[0059] 1-stator; 2-blade; 3-rotor ring; 4-radial magnetic fitting; 5-first magnetic part; 6-upper magnetic fitting; 7-second magnetic part; 8-lower magnetic fitting; 9-third magnetic part; 10-disc motor drive coil; 11-magnet ring; 12-rolling assembly; 13-gap sensor; 14-Venturi tube; 15-guide extension. DETAILED DESCRIPTION

[0060] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and indicated in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0061] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0062] Combine the following Figures 1 to 6 The present invention is described in detail.

[0063] Example 1

[0064] A magnetically suspended rotor system with a disk motor mid-drive and its aircraft, see attached Figure 1 , comprising a stator 1, a rotor ring 3 and 6 blades 2, wherein the stator 1 comprises a central axis and an upper limit plate and a lower limit plate mirror-set at the upper and lower ends of the central axis, and the rotor ring 3 is distributed between the upper and lower limit plates and is coaxially arranged with the central axis, as shown in the attached Figure 4 , the six blades 2 are arranged at intervals on the outer wall of the rotor ring 3; the upper and lower limit plates and the rotor ring 3 are provided with axial support modules and rotation drive modules that cooperate with each other, the axial support module is used to create an air gap between the limit plate and the rotor ring 3 on the opposite side, and the rotation drive module is used to drive the rotor ring 3 and the blades 2 to rotate to provide lift.

[0065] An axial air gap is controlled to be generated between the stator 1 and the rotor ring 3, and the range of the axial air gap is 10 mm.

[0066] The stator 1 and the rotor ring 3 are both made of non-ferromagnetic materials with good thermal conductivity; in this embodiment, carbon fiber materials are used.

[0067] In this embodiment, the axial support module includes an upper magnetic fitting part 6 and a second magnetic part 7 that cooperate with each other. The upper magnetic fitting part 6 is embedded in the upper surface of the rotor ring 3, and the second magnetic part 7 is embedded in the lower surface of the upper limit plate.

[0068] The second magnetic member 7 is an electromagnet, and the upper magnetic matching member 6 is an iron ring;

[0069] The upper magnetic matching member 6 is flush with the surface of the rotor ring 3 , and the second magnetic member 7 is flush with the lower surface of the limiting plate.

[0070] In this embodiment, refer to the attached Figure 2 The axial support module also includes a lower end magnetic matching part 8 and a third magnetic part 9 that cooperate with each other. The lower end magnetic matching part 8 is embedded in the lower surface of the rotor ring 3, and the third magnetic part 9 is embedded in the upper surface of the lower end limit plate.

[0071] The third magnetic member 9 is an electromagnet, and the lower end magnetic matching member 8 is an iron ring;

[0072] The lower end magnetic matching member 8 is flush with the lower surface of the rotor ring 3 , and the third magnetic member 9 is flush with the upper surface of the limiting plate.

[0073] In this embodiment, there are multiple axial support modules, which are evenly distributed around the axis of the stator 1 .

[0074] The number of the second magnetic members 7 and the third magnetic members 9 is 3 pairs, and each pair of the second magnetic members 7 and the third magnetic members 9 is spaced apart around the axis of the stator 1 , and the spacing angle is 120°.

[0075] There are three pairs of axial support modules, which are evenly distributed around the rotor's central axis of rotation to ensure balanced axial force on the rotor as a whole. During the flight of the rotorcraft, the three-pair setting is the most conducive configuration for reducing weight.

[0076] The volume of the second magnetic component 7 is smaller than the volume of the third magnetic component 9 .

[0077] In this embodiment, at least three first magnetic components 5 are embedded on the central axis, and radial magnetic matching components 4 matching with the first magnetic components 5 are provided on the ring wall of the rotor ring 3 close to the central axis.

[0078] The first magnetic component 5 is an electromagnet, and the radial magnetic matching component 4 is an iron ring.

[0079] A radial air gap is controlled to be generated between the stator 1 and the rotor ring 3, and the radial air gap range is 5 mm; the advantage of the radial air gap being smaller than the axial air gap is that the radial suspension control is relatively simple, and reducing the radial air gap can make the overall structure more compact, effectively reducing the overall weight of the rotor system.

[0080] The number of the first magnetic members 5 is 4 pairs, and the first magnetic members 5 are distributed at intervals around the axis of the stator 1 , with an interval angle of 90°.

[0081] The first magnetic parts of the present invention have a total of 4 pairs, which are evenly distributed around the central axis of rotation of the rotor, and cooperate to control the radial displacement limit of the rotor ring 3 to achieve autonomous control of the radial limit; using 4 pairs can minimize the total weight of the rotor while ensuring the most accurate control possible.

[0082] In this embodiment, refer to the attached Figure 5The rotation drive module includes a disk motor drive coil 10 and a magnet ring 11 matched therewith. The disk motor drive coil 10 is embedded in the upper surface of the rotor ring 3, and the magnet ring 11 is embedded in the lower surface of the limiting plate. The disk motor drive coil 10 and the magnet ring 11 are both coaxially arranged with the rotor ring 3.

[0083] The magnet ring 11 is made of permanent magnets.

[0084] In this embodiment, a plurality of rolling components 12 are respectively disposed on opposite sides of the upper and lower limit plates, and twelve rolling components 12 are disposed on each of the upper and lower limit plates.

[0085] The rolling assembly 12 uses a roller; the roller is respectively embedded in the upper and lower limit plates, the exposed amount of the roller is 2 mm, and the rotation direction of the roller is consistent with the rotation direction of the rotor ring 3.

[0086] In this embodiment, a plurality of rolling assemblies 12 are spaced apart on the side wall of the central axis. There are four rolling assemblies 12 on the central axis, and the spacing angle between each rolling assemblies is 90°.

[0087] The rolling assembly 12 uses rollers; the rollers are respectively embedded on the central axis, the exposed amount of the rollers is 2 mm, and the rotation direction of the rollers is consistent with the rotation direction of the rotor ring 3.

[0088] In this embodiment, a plurality of gap sensors 13 are disposed on a side of the stator 1 close to the rotor ring 3 , and the gap sensors 13 are disposed at intervals around the axis of the stator 1 .

[0089] Among them, three gap sensors 13 are respectively arranged on the upper and lower limit plates, and the angular interval between the gap sensors 13 on one side is 120°; four gap sensors 13 are arranged on the central axis, and the angular interval between the gap sensors 13 is 90°, and the gap sensors 13 are used in conjunction with the first magnetic part 5.

[0090] Example 2

[0091] Different from the first embodiment, the rolling assembly 12 in the second embodiment adopts a ball, which is embedded in the groove and can roll freely, and the exposed amount of the ball is 2 mm.

[0092] Example 3

[0093] The difference from Example 1 is that Figure 3 In this embodiment, the rotor ring 3 is symmetrically provided with a venturi tube 14 , and the venturi tube 14 is arranged along the axial direction of the rotor ring 3 .

[0094] There are three venturi tubes 14 , which are evenly spaced apart along the central axis.

[0095] The axial length of the upper tube cavity of the Venturi tube 14 is L1, and the axial length of the lower tube cavity is L 2 , L 1 +L 2 is the axial length of the rotor ring 3, L 1 >L 2 The outer end opening sizes of the upper tube cavity and the lower tube cavity are equal, the inner end openings of the upper tube cavity and the lower tube cavity are connected, and the inner end opening size is smaller than the outer end opening.

[0096] Example 4

[0097] Refer to the attached Figure 6 In this embodiment, the upper limit plate and the lower limit plate are inclined and extended toward the direction close to the blade 2 to form a guide extension portion 15. A gap is provided between the guide extension portion 15 and the blade 2 or the rotor ring 3. The gap and the air gap formed between the stator 1 and the rotor ring 3 form a ducted cooling system.

[0098] The longitudinal width of the blade 2 is smaller than the longitudinal height of the rotor ring 3 .

[0099] Example 5

[0100] Different from Example 4, the size of the end portion where the rotor ring 3 is connected to the blade 2 gradually decreases from the direction away from the blade 2 on this side to the direction close to the blade 2 on this side to form an accommodating portion, so as to prevent the extension portion 15 from contacting the rotor ring 3 first when approaching the rotor ring 3 and hindering the rolling assembly from supporting the rotor ring 3.

[0101] Example 6

[0102] Different from the third embodiment, in this embodiment, the second magnetic member 7 is a permanent magnetic array, and the upper magnetic matching member 6 is an induction rail;

[0103] The third magnetic member 9 is a permanent magnetic array, and the lower end magnetic matching member 8 is an induction rail;

[0104] The first magnetic component 5 is a permanent magnetic array, and the radial magnetic matching component 4 is an induction rail.

[0105] Example 7

[0106] This embodiment is an aircraft containing the magnetic levitation power rotor system with a central drive of a disc motor as described in any one of Embodiments 1-6, and the magnetic levitation power rotor system with a central drive of a disc motor provides additional lift for the aircraft.

[0107] Working principle and usage process:

[0108] The second magnetic member 7 generates an attractive force to pull the rotor ring 3 up and away from the support of the rolling assembly 12 on the lower end limit plate (when stationary, the rolling assembly 12 can support the rotor ring 3 and prevent the rotor ring 3 from colliding and getting stuck with the inner side of the stator 1 as much as possible, giving the suspension controller a time buffer.), so that a gap is generated between the surface of the stator 1 and the rotor ring 3, thereby achieving frictionless starting of the rotor.

[0109] The rotary drive module is driven by a permanent magnet brushless DC motor. Compared with the traditional rotary motor, it can make full use of the radial space of the stator 1, effectively reduce the weight of the magnetic levitation rotorcraft, and provide greater lift and stability; the disc motor drive coil 10 is energized to drive the rotor ring 3 and the magnet ring 11 to rotate, providing power for the rotation of the blade 2. As the speed increases, the lift generated by the blade 2 increases, and in this process, the attraction generated by the second magnetic part 7 is controlled to gradually decrease. When the lift generated by the blade 2 is equal to the gravity of the rotating component itself, the attraction generated by the third magnetic part 9 is controlled to gradually increase. When the lift is equal to the rotational deadweight, the rotor ring 3 and the blade 2 itself can overcome the deadweight and hover. As the lift continues to increase, the third magnetic part 9 needs to increase the suction force to control the axial air gap; the lift continues to increase. When the lift is greater than or equal to the deadweight of the rotor system, the rotor device can be lifted off, and the lift generated by the blade 2 is transmitted to the stator 1 through the attraction generated by the third magnetic part 9, so that the device is lifted off.

[0110] The first magnetic component 5 generates attraction when energized, adjusts the current according to the feedback information of the radial gap sensor 13, controls the attraction of the radial limit module, and radially maintains the air gap between the rotor ring 3 and the radial inner side of the stator 1 to prevent the rotor ring 3 from colliding with the stator 1, thereby achieving stable suspension between the rotor and the stator 1 during flight; in special circumstances, when the instantaneous lift is greater than the attraction generated by the electromagnet control, the rotor ring 3 will contact the rolling assembly 12, causing the rotor ring to rotate normally, thereby achieving the function of protecting the electromagnet and maintaining the normal operation of the structure.

[0111] The overall structure of the device adopts a method of wrapping the rotor with a central stator 1, which makes the magnetic levitation rotor structure compact, and the air gap connected to the outside and the outer blades drive the air flow to better achieve heat dissipation. At the same time, the magnetic levitation stator 1 and the rotor use better heat dissipation materials, which can also significantly improve the heat dissipation performance of the rotor. The rated speed of the rotor ring 3 can be higher, thereby providing greater lift and flight speed.

[0112] When compressed air enters from the inlet of the venturi tube 14, it will pass through a gradually smaller channel. During this process, the flow rate of the compressed air will gradually increase, while the pressure will gradually decrease. The setting of the venturi tube 14 causes the rotor ring to be subjected to an additional lift, and plays a role in reducing the weight of the rotor ring 3.

[0113] The venturi tube 14 is divided into two flow channels, the lower flow channel is short and the upper flow channel is long. The airflow tends to leave along the normal direction of the flow channel wall, so the air is stretched (air expands) and the pressure is reduced. According to the Bernoulli principle and the wall effect, the airflow velocity should be reduced, and the airflow should flow along the wall to reduce the air gap pressure above. The rotor ring 3 will be subjected to an upward force, and the weight of the rotor ring 3 will also be reduced, thereby improving the permeability of the device and the heat dissipation effect.

[0114] It should be noted that:

[0115] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetically suspended rotor system with a disk motor mid-drive, characterized in that: The invention comprises a stator (1), a rotor ring (3) and a plurality of blades (2), wherein the stator (1) comprises a central axis and an upper limit plate and a lower limit plate which are arranged in a mirror image at the upper and lower ends of the central axis, the rotor ring (3) is distributed between the upper and lower limit plates and is arranged coaxially with the central axis, and the plurality of blades (2) are arranged at intervals on the outer wall of the rotor ring (3); the upper and lower limit plates and the rotor ring (3) are provided with axial support modules and rotation drive modules which cooperate with each other, the axial support module is used to generate an air gap between the limit plate and the rotor ring (3) on the opposite side, and the rotation drive module is used to drive the rotor ring (3) to rotate; Venturi tubes (14) are arranged at intervals on the rotor ring (3); the Venturi tubes (14) are symmetrically distributed along the central axis; The structure of the venturi tube (14) comprises two truncated cone-shaped holes spliced ​​together from top to bottom, the small ends of the two truncated cone-shaped holes are connected to each other, and the height of the truncated cone-shaped hole close to the upper surface of the rotor ring is greater than the height of the other truncated cone-shaped hole.

2. The magnetic levitation power rotor system with a disk motor mid-drive according to claim 1, characterized in that: The axial support module comprises an upper magnetic matching part (6) and a second magnetic part (7) that cooperate with each other, the upper magnetic matching part (6) being embedded in the upper surface of the rotor ring (3), and the second magnetic part (7) being embedded in the lower surface of the upper limit plate; the axial support module also comprises a lower magnetic matching part (8) and a third magnetic part (9) that cooperate with each other, the lower magnetic matching part (8) being embedded in the lower surface of the rotor ring (3), and the third magnetic part (9) being embedded in the upper surface of the lower limit plate; The axial support modules are multiple and are evenly distributed around the axis of the stator (1).

3. The magnetic levitation power rotor system with a disk motor mid-drive according to claim 1, characterized in that: At least three first magnetic parts (5) are embedded on the central axis, and radial magnetic matching parts (4) matching with the first magnetic parts (5) are provided on the ring wall of the rotor ring (3) on the side close to the central axis.

4. The magnetic levitation power rotor system with a disk motor mid-drive according to claim 1, characterized in that: The rotation drive module comprises a disk motor drive coil (10) and a magnet ring (11) matched therewith, wherein the disk motor drive coil (10) is embedded in the upper surface of the rotor ring (3), and the magnet ring (11) is embedded in the lower surface of the upper limit plate, and the disk motor drive coil (10) and the magnet ring (11) are both arranged coaxially with the rotor ring (3).

5. The magnetic levitation power rotor system with a disk motor mid-drive according to claim 1, characterized in that: A plurality of rolling assemblies (12) are respectively arranged on opposite sides of the upper limit plate and the lower limit plate, and a plurality of rolling assemblies (12) are arranged at intervals on the side wall of the central axis.

6. The magnetic levitation power rotor system with a disk motor mid-drive according to claim 1, characterized in that: A plurality of gap sensors (13) are arranged on a side of the stator (1) close to the rotor ring (3), and the gap sensors (13) are arranged at intervals around the axis of the stator (1).

7. The magnetic levitation power rotor system with a disk motor mid-drive according to claim 1, characterized in that: The upper limit plate and the lower limit plate have sides close to the blade (2) that are inclined and extend in a direction close to the blade to form a guide extension portion (15), a gap is provided between the guide extension portion (15) and the blade (2) or the rotor ring (3), and the gap and the air gap formed between the stator (1) and the rotor ring (3) form a ducted cooling system.

8. An aircraft, characterized in that: A magnetically suspended powered rotor system with a disc motor mid-drive as described in any one of claims 1 to 7.

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