A shaftless magnetic levitation rotor power system and aircraft thereof

Abstract

The present invention discloses a shaftless magnetic levitation rotor power system and an aircraft thereof, which solves the technical problem that the existing rotor power system still needs to be further improved in terms of light weight and reliability. The present invention comprises: a rotor, a drive system, and an axial magnetic levitation support assembly. The drive system comprises at least one rotor ring and at least one stator. The stator is arranged above and / or below the rotor ring, the rotor is arranged on the outside of the rotor ring, a through hole is arranged in the middle of the rotor ring, and the axial magnetic levitation support assembly is arranged axially between at least one stator and the rotor ring to achieve suspension between the stator and the rotor ring. The present invention has the advantages of light weight and high reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor power systems, and in particular to a shaftless magnetically suspended rotor power system and an aircraft thereof. Background Art

[0002] The rotor power system is one of the core components of a rotorcraft, which generally includes a drive part, namely a motor, a rotor part, and a structure that can maintain rotational stability and reduce friction, such as axial support and radial limit assemblies.

[0003] According to the different motor structures, it can be divided into disc motors and non-disc motors. The non-disc motor is a traditional cylindrical motor whose rotor and stator are arranged radially, while the rotor and stator of the disc motor are arranged axially.

[0004] No matter it is a disc motor or a non-disc motor, when it is used to drive a rotor power system, a central axis is generally set to ensure the stability of the structure and the smoothness of rotation. For example, in the previous patent of this team, the publication number is CN118238996A, and the patent name is: A magnetic levitation power rotor system with a disc motor mid-drive and its aircraft. Although it also uses a disc motor, it has a central axis, and the upper and lower stators are fixedly connected to the central axis. A rotor ring is set between the upper and lower stators, and the rotor is connected to the rotor ring. When the rotating drive module set between the rotor ring and the stator drives the rotor ring to rotate, it will drive the rotor to rotate and generate lift.

[0005] Due to the design of the central axis, the weight will increase, and because the entire drive and magnetic suspension system are integrated near the central axis, heat dissipation will be difficult.

[0006] Based on the problems existing in the above-mentioned existing patents, it is necessary to study a lighter and more reliable rotor power system. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing rotor power system still needs to be further improved in terms of lightness and reliability.

[0008] The present invention is achieved through the following technical solutions:

[0009] A shaftless magnetic levitation rotor power system, comprising:

[0010] Rotor,

[0011] Drive system,

[0012] Axial magnetic suspension support assembly,

[0013] The drive system includes at least one rotor ring and at least one stator, the stator is arranged above and / or below the rotor ring, the rotor is arranged on the outside of the rotor ring, and a through hole is arranged in the middle of the rotor ring, and the through hole is connected to the outside through a gap formed between the rotor ring and the stator.

[0014] The axial magnetic suspension support assembly is axially arranged between at least one stator and the rotor ring, so as to realize suspension between the stator and the rotor ring.

[0015] A driving assembly is disposed between at least one stator and the rotor ring for driving the rotor ring to rotate relative to the stator.

[0016] The concept of the present invention is: a design without a central axis, a disc motor composed of a rotor ring and a stator is used as a driving system of a rotor system, and an axial magnetic suspension support assembly is provided between the rotor ring and the stator to realize the suspension between the stator and the rotor ring. Due to the design without a central axis, the entire rotor power system is lighter, and due to the magnetic suspension between the rotor ring and the stator, frictionless starting and the suspension of the rotor ring part during the entire flight process can be guaranteed, so that the rotor rotation is carried out under lightweight conditions, with lower energy consumption and more stability. The heat generated by the driving system between the stator and the rotor ring can also be diffused outward through the through hole through the suspension gap between the stator and the rotor ring, thereby enhancing the heat dissipation effect, extending the life of the motor, and improving the reliability of the rotor power system.

[0017] Furthermore, the axial magnetic suspension support assembly includes a first axial magnetic assembly arranged on the rotor ring and a second axial magnetic assembly cooperatively arranged on the stator.

[0018] The first axial magnetic assembly and the second axial magnetic assembly may constitute a controllable magnetic suspension system, or both of them may be permanent magnets constituting a permanent magnet system.

[0019] Furthermore, controllable magnetic levitation systems such as electromagnetic levitation systems and superconducting magnetic levitation systems.

[0020] By setting up a controllable magnetic levitation system, the magnetic force of the axial magnetic levitation support assembly can be controlled according to the actual flight stage and state, so as to adapt to different flight conditions and ensure the stability and reliability of the entire flight process.

[0021] Furthermore, a radial limiting assembly is provided between the stator and the rotor ring to achieve radial support stability of the stator and the rotor ring.

[0022] Furthermore, the radial limiting assembly may be a ball or rolling bearing arranged on the rotor ring and / or the stator.

[0023] Furthermore, the radial limiting assembly includes a first radial assembly and a second radial assembly, the first radial assembly is arranged on the stator, and the second radial assembly is arranged on the rotor ring.

[0024] Furthermore, the first radial component and the second radial component constitute a magnetic suspension system. Preferably, the first radial component and the second radial component constitute a controllable magnetic suspension system.

[0025] The rotor ring and the stator are provided with a matching structure of a groove and a raised track,

[0026] When the rotor ring is provided with a raised track, the stator is provided with a groove corresponding to the raised track. When there are two stators, the upper end and / or the lower end of the rotor ring are provided with a raised track.

[0027] When the rotor ring is provided with a groove, the stator is provided with a raised track corresponding to the groove.

[0028] The side wall of the groove and the raised track are matched with a radial limit assembly, and the inner top wall of the groove and the top of the raised track are matched with the axial magnetic suspension support assembly.

[0029] The present invention adopts a structure in which a raised track and a groove cooperate with each other, so that the radial limit assembly and the axial magnetic suspension support assembly can be easily installed in the radial and axial directions. Even in extreme cases, the cooperation between the raised track and the groove can effectively prevent the rotor ring from detaching from the entire rotor power system.

[0030] In another matching structure of a stator and a rotor ring, the side wall of the stator is provided with an extension portion extending axially, the inner side wall of the extension portion and the outer side wall of the rotor ring are matched to be provided with a radial limit assembly, and the inner top wall of the stator and the top of the rotor ring are matched to be provided with the axial magnetic suspension support assembly.

[0031] The outer extension of the stator surrounds the upper part of the rotor ring, and a radial limiting component and an axial magnetic suspension support component are correspondingly arranged, so that the axial support and radial limiting effects are good and the structure is compact.

[0032] Furthermore, when the drive system includes a rotor ring and two stators, the two stators are an upper stator and a lower stator, respectively, the upper stator is arranged above the rotor ring, and the lower stator is arranged below the rotor ring, and a rotor ring and at least one stator are cooperated to form a drive assembly.

[0033] Furthermore, the driving assembly includes an iron core arranged at the lower end of the upper stator and / or the upper end of the lower stator, a driving coil wound around the iron core, and a magnet arranged at the upper end and / or the lower end of the rotor ring.

[0034] When the drive coil is energized, it can cooperate with the magnet to generate a rotational driving force, so that the rotor ring can rotate relative to the stator. The through hole in the middle of the rotor ring and the gap between the rotor ring and the stator as well as the connection with the outside world can achieve good heat dissipation, extend the life of the motor and improve the reliability of the rotor power system.

[0035] As a preferred arrangement of the drive system, radial limit assembly and axial magnetic suspension support assembly, the upper end surface of the lower stator and the lower end surface of the rotor ring are cooperated with the axial magnetic suspension support assembly, and the lower end surface of the upper stator and the upper end surface of the rotor ring are cooperated with the drive assembly.

[0036] In order to further improve the heat dissipation system of the system, a heat dissipation structure is arranged on the inner wall of the through hole.

[0037] Furthermore, a heat dissipation microchannel connected to the through hole and the outside is arranged inside the stator.

[0038] Furthermore, an inner recess is provided on one side of the upper stator and / or the lower stator close to the rotor ring through hole, and the inner recess expands the space at the through hole. The provision of the heat dissipation microchannel increases the flow of air between the through hole and the outside, facilitates the flow of air, and further improves the heat dissipation effect.

[0039] Preferably, the upper stator and the lower stator are fixedly connected via a connecting piece, and the connecting piece passes through the through hole.

[0040] In the present invention, regarding the fixation of the rotor power system, if the upper stator and the lower stator are not connected, both the upper stator and the lower stator need to be connected to the frame part of the aircraft. If the upper stator and the lower stator are connected, the upper stator or the lower stator alone or both the upper stator and the lower stator can be connected to the frame part.

[0041] The connecting piece may be a bolt, or a connecting rod, etc.

[0042] Preferably, the drive system comprises N rotor rings and N+1 stators, the N rotor rings and N+1 stators constitute N drive modules, wherein one or two stators and one rotor ring constitute one drive module, wherein N is greater than or equal to 2.

[0043] The present invention can be configured with multiple layers of rotor rings and multiple layers of rotor wings, so as to adjust the lift as required.

[0044] An aircraft comprises the above-mentioned shaftless magnetic levitation rotor power system.

[0045] The present invention has the following advantages and beneficial effects:

[0046] The present invention makes the entire rotor power system lighter by removing the central axis design, and due to the magnetic suspension between the rotor ring and the stator, the suspension of the rotor ring part can be guaranteed during the flight, so that the rotor rotation is carried out under lightweight conditions, with lower energy consumption and more stability. The heat generated by the drive assembly between the stator and the rotor ring can also be diffused outward through the through hole through the suspension gap between the stator and the rotor ring, thereby enhancing the heat dissipation effect, extending the life of the motor, and improving the reliability of the rotor power system.

[0047] 2. The present invention provides a heat dissipation structure at the through hole, and the heat dissipation structure is driven to rotate under the rotation of the rotor ring, thereby forming a gas diversion effect and further improving the heat dissipation performance.

[0048] 3. The present invention arranges stators above and below the rotor ring, wherein the upper end surface of the lower stator and the lower end surface of the rotor ring are cooperated with the axial magnetic suspension support assembly, the lower end surface of the upper stator and the upper end surface of the rotor ring are cooperated with the driving assembly, and a radial limit assembly is arranged between the side wall of the extended part of the stator and the rotor ring. Through the reasonable configuration of various components, the structure is simplified while ensuring lightweight and reducing energy consumption.

[0049] 4. The present invention provides multiple layers of rotors and cooperates with a double-stator motor structure to set the number of rotor layers according to lift requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0051] Figure 1 It is a schematic diagram of the overall structure of the single-layer rotor power system of the present invention;

[0052] Figure 2 For the present invention Figure 1 A half-section structural schematic diagram;

[0053] Figure 3 This is a schematic diagram of the top view of the rotor ring structure of the present invention;

[0054] Figure 4 It is a bottom view structural schematic diagram of the upper stator or the first stator of the present invention;

[0055] Figure 5 It is a schematic diagram of a half-section structure of a rotor ring of a single-layer rotor power system of the present invention with raised rails arranged on the upper and lower sides;

[0056] Figure 6 A schematic diagram of a half-section structure of a heat dissipation structure provided in a rotor ring through hole of the present invention;

[0057] Figure 7A schematic diagram of a half-section structure of a stator provided with an inner recess in the present invention;

[0058] Figure 8 A schematic diagram of a half-section structure of a stator provided with a heat dissipation microchannel according to the present invention;

[0059] Fig. 9 It is a schematic diagram of the overall structure of the multi-layer rotor power system of the present invention with multi-layer rotors overlapping;

[0060] Fig.10 It is a schematic diagram of the overall structure of the multi-layer rotor power system of the present invention with staggered multi-layer rotors;

[0061] Fig.11 It is a schematic diagram of the structure of a half-section view of a multi-layer rotor power system of the present invention;

[0062] Fig.12 A schematic diagram of the structure of the upper stator of the present invention provided with a heat dissipation microchannel;

[0063] Fig.13 A schematic diagram of another structure of heat dissipation microchannels provided on the stator of the present invention;

[0064] Fig.14 This is a schematic diagram of the structure of the upper stator of the present invention provided with a hollow grid structure and cut along the horizontal direction;

[0065] Fig.15 A schematic diagram of a connection structure between two rotor rings of the present invention;

[0066] Fig.16 It is a schematic diagram of the structure of a connecting piece arranged between two stators of the present invention.

[0067] The names of the components in the attached drawings are as follows:

[0068] 1-rotor, 101-upper rotor, 102-lower rotor, 2-through hole, 201-heat dissipation structure, 202-upper inner concave portion, 203-lower inner concave portion, 204-connecting support rod, 3-radial limit assembly, 301-first radial assembly, 302-second radial assembly, 4-axial magnetic suspension support assembly, 401-first axial magnetic assembly, 402-second axial magnetic assembly, 5-rotor ring, 501-first rotor ring, 502-second rotor ring, 503-magnet, 601-extension, 602-iron core, 603-drive coil, 604-upper stator, 605-lower stator, 606-first stator, 607-second stator, 608-third stator, 609-rotating rod, 7-heat dissipation microchannel, 8-groove, 9-raised track, 10-connector, 11-hollow grid structure, 12-grid plate,

[0069] The dotted lines in the drawings indicate the blocked parts. DETAILED DESCRIPTION

[0070] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0071] Example 1

[0072] like Figure 1-Figure 15 As shown, a shaftless magnetic levitation rotor power system comprises:

[0073] Rotor 1,

[0074] Drive system,

[0075] Axial magnetic suspension support assembly 4,

[0076] The drive system includes at least one rotor ring 5 and at least one stator. The stator is arranged above and / or below the rotor ring 5. The rotor 1 is arranged on the outside of the rotor ring 5. A through hole 2 is arranged in the middle of the rotor ring 5. The through hole 2 is connected to the outside through the gap formed between the rotor ring 5 and the stator.

[0077] The axial magnetic suspension support assembly 4 is axially arranged between at least one stator and the rotor ring 5 , so as to realize suspension between the stator and the rotor ring 5 .

[0078] A driving assembly is disposed between at least one stator and the rotor ring for driving the rotor ring to rotate relative to the stator.

[0079] In this embodiment, by removing the central axis design, a disc motor consisting of a rotor ring 5 and a stator is used as the driving system of the rotor 1 system, and an axial magnetic suspension support assembly 4 is provided between the rotor ring 5 and the stator to realize the suspension between the stator and the rotor ring 5. Due to the design of removing the central axis, the entire rotor power system is lighter, and due to the magnetic suspension between the rotor ring 5 and the stator, frictionless starting and partial suspension of the rotor ring 5 during the entire flight process can be guaranteed, ensuring that the rotor 1 rotates under lightweight conditions, with lower energy consumption and more stability. The heat generated by the driving system between the stator and the rotor ring 5 can also diffuse outward through the through hole 2 through the suspension gap between the stator and the rotor ring 5, thereby enhancing the heat dissipation effect, extending the life of the motor, and improving the reliability of the rotor power system.

[0080] In this embodiment, the axial magnetic suspension support assembly 4 includes a first axial magnetic assembly 401 arranged on the stator and a second axial magnetic assembly 402 cooperatively arranged on the rotor ring 5. The first axial magnetic assembly 401 and the second axial magnetic assembly 402 can constitute a controllable magnetic suspension system or both are permanent magnets to constitute a permanent magnet system.

[0081] In this embodiment, the number of the rotors 1 is greater than or equal to 2.

[0082] Example 2

[0083] The difference between this embodiment and embodiment 1 is that the drive system includes a rotor ring 5 and a stator. Regarding the positional relationship between the rotor ring 5 and the stator, one method of this embodiment is: the stator is an upper stator 604 located above the rotor ring 5, and a drive component and an axial magnetic suspension support component 4 are arranged between the rotor ring 5 and the upper stator 604. The drive component drives the rotor ring 5 to rotate relative to the upper stator 604 to generate lift, and the repulsive force generated by the axial magnetic suspension support component 4 generates suspension support for the upper stator 604. In order to generate the repulsive force, the axial magnetic suspension support component 4 adopts a permanent magnet system, that is, the first axial magnetic component 401 and the second axial magnetic component 402 both adopt permanent magnets with the same polarity.

[0084] Another way of this embodiment is: the stator is a lower stator 605 located below the rotor ring 5, and a driving component and an axial magnetic levitation support component 4 are arranged between the rotor ring 5 and the lower stator 605. The driving component drives the rotor ring 5 to rotate relative to the lower stator 605 to generate lift, and the suction force generated by the axial magnetic levitation support component 4 suspends the lower stator 605. In order to generate suction, the axial magnetic levitation support component 4 adopts a controllable magnetic levitation system, and the controllable magnetic levitation system is an electromagnetic levitation system or a superconducting magnetic levitation system.

[0085] In order to reduce the friction between the rotor ring 5 and the lower stator 605 during the rotation process, balls or rollers are provided on the rotor ring 5 and / or the lower stator 605 .

[0086] In this embodiment, when the controllable magnetic levitation system adopts a superconducting magnetic levitation system, that is, the first axial magnetic component 401 is a superconducting magnet and the second axial magnetic component 402 is a permanent magnet, since the superconducting magnetic levitation system has a pinning effect, it can not only play an axial suspension role, but also a radial limiting role, thereby the use of the radial limiting component 3 can be omitted.

[0087] In this embodiment, when the controllable magnetic suspension system adopts an electromagnetic suspension system, the first axial magnetic component 401 is an electromagnet, and the second axial magnetic component 402 is an armature.

[0088] In this embodiment, when the axial magnetic levitation support assembly 4 is an electromagnetic levitation system, the first axial magnetic assembly 401 is an electromagnet, and the armature of the second axial magnetic assembly 402 can be eliminated. The lower stator 605 is directly made of ferromagnetic material. The magnetic field generated by the electromagnetic coil acts on the ferromagnetic lower stator 605 to generate electromagnetic attraction, thereby driving the lower stator 605 to rise together with the rotating rotor ring 5.

[0089] By setting up a controllable magnetic levitation system, the magnetic force of the axial magnetic levitation support assembly 4 can be controlled according to the actual flight stage and state, so as to adapt to different flight conditions and ensure the stability and reliability of the entire flight process.

[0090] In this embodiment, when the axial magnetic suspension support assembly 4 adopts a permanent magnet system or a controllable magnetic suspension system, a radial limit assembly 3 is further provided between the stator and the rotor ring 5 to ensure the radial support stability of the stator and the rotor ring 5 .

[0091] The radial limiting assembly 3 is a ball or roller arranged on the stator and / or rotor ring 5 .

[0092] Another embodiment of the radial limit assembly is as follows: the radial limit assembly 3 includes a first radial assembly 301 and a second radial assembly 302, wherein the first radial assembly 301 is arranged on the stator, and the second radial assembly 302 is arranged on the rotor ring 5, and the first radial assembly 301 and the second radial assembly 302 constitute a magnetic suspension system, specifically, the first radial assembly 301 is a radial electromagnet, and the second radial assembly 302 is an armature, or the first radial assembly 301 and the second radial assembly 302 are both permanent magnets.

[0093] Example 3

[0094] The difference between this embodiment and embodiment 1 or 2 is that, in this embodiment, Figure 2 and Figure 5-Figure 8 As shown, the rotor ring 5 and the stator are provided with a matching structure of a groove 8 and a raised track 9.

[0095] When the rotor ring 5 is provided with a raised track 9, the stator is provided with a groove 8 corresponding to the raised track 9;

[0096] When the rotor ring 5 is provided with a groove 8, the stator is provided with a raised track 9 corresponding to the groove 8;

[0097] The side wall of the groove 8 and the raised track 9 are matched with a radial limit assembly 3 , and the inner top wall of the groove 8 and the top of the raised track 9 are matched with the axial magnetic suspension support assembly 4 .

[0098] This embodiment adopts a structure in which the raised track 9 and the groove 8 cooperate with each other, which makes it convenient to install the radial limit assembly 3 and the axial magnetic suspension support assembly 4 in the radial and axial directions. Even in extreme cases, the cooperation between the raised track 9 and the groove 8 can effectively prevent the rotor ring 5 from detaching from the entire rotor power system.

[0099] In this embodiment, another implementation of the matching structure between the rotor ring 5 and the stator is: the side wall of the stator is provided with an axial extension portion 601, the inner side wall of the extension portion 601 and the outer side wall of the rotor ring 5 are matched with a radial limit assembly 3, and the inner top wall of the stator and the top of the rotor ring 5 are matched with the axial magnetic suspension support assembly 4.

[0100] In this embodiment, the extension portion 601 of the stator encloses the upper portion of the rotor ring 5, and a radial limiting assembly 3 and an axial magnetic suspension support assembly 4 are correspondingly provided, so that the axial support and radial limiting effects are good and the structure is compact.

[0101] Example 4

[0102] The difference between this embodiment and embodiment 3 is that Figure 1 , 2 and Figure 5-Figure 8 As shown, the driving system includes a rotor ring 5 and two stators, the two stators are an upper stator 604 and a lower stator 605, the upper stator 604 is arranged above the rotor ring 5, and the lower stator 605 is arranged below the rotor ring 5, and a driving component is cooperatively arranged on the rotor ring 5 and at least one of the stators.

[0103] In this embodiment, if Figure 2 and Figure 5-Figure 8 As shown, the driving assembly includes an iron core 602 arranged on the lower end surface of the upper stator 604 and / or the upper end surface of the lower stator 605 , a driving coil 603 wound around the iron core 602 , and a magnet 503 arranged on the upper end of the rotor ring 5 .

[0104] In this embodiment, when the driving coil 603 is energized, it can cooperate with the magnet 503 to generate a rotational driving force, so that the rotor ring 5 can rotate relative to the stator. The through hole 2 in the middle of the rotor ring 5 and the gap between the rotor ring 5 and the stator as well as the connection with the outside world can achieve good heat dissipation, extend the life of the motor, and improve the reliability of the rotor power system.

[0105] In this embodiment, with regard to the arrangement of the driving assembly and the axial magnetic levitation support assembly 4, the upper end surface of the lower stator 605 and the lower end surface of the rotor ring 5 are cooperated with an axial magnetic levitation support assembly 4 for generating suction, and the lower end surface of the upper stator 604 and the upper end surface of the rotor ring 5 are cooperated with the driving assembly.

[0106] For this arrangement, when the axial magnetic suspension support assembly 4 adopts an electromagnetic suspension system, the working process of the rotor power system is as follows:

[0107] During the take-off phase: the drive assembly rotates to make the rotor ring 5 rotate relative to the stator. When the difference between the lift generated by the rotor 1 and the gravity of the rotating part is less than the gravity of the non-rotating part and equal to the axial suction generated by the axial magnetic suspension support assembly 4, the rotor ring 5 and the lower stator 605 are controlled to be stably suspended.

[0108] During the uniform flight, when the axial force generated by the axial magnetic suspension support assembly 4 is equal to the gravity of the non-rotating part, the rotor ring 5 is always kept stably suspended relative to the lower stator 605;

[0109] During the descent phase, the control drive assembly reduces the rotational output, so that the lift generated by the rotor 1 gradually decreases. When the lift gradually decreases to zero, the axial force of the axial magnetic levitation support assembly 4 is also reduced to zero, and the rotor ring 5 contacts the lower stator 605.

[0110] In this embodiment, a second magnetic suspension system for generating suction may be arranged in cooperation with the lower end surface of the upper stator 604 and the upper end surface of the rotor ring 5, so as to generate suction to suspend the rotor ring 5 during the take-off phase, thereby ensuring that the rotor ring 5 is in a suspended state before or during rotation, thereby achieving frictionless starting.

[0111] Regarding the arrangement of the drive assembly and the axial magnetic levitation support assembly 4, another way is: the lower end surface of the upper stator 604 and the upper end surface of the rotor ring 5 are cooperated with an axial magnetic levitation support assembly 4 that generates a repulsive force, and the upper end surface of the lower stator 605 and the lower end surface of the rotor ring 5 are cooperated with the drive assembly.

[0112] For this arrangement, when the axial magnetic suspension support assembly 4 adopts a permanent magnetic suspension system that generates repulsive force, the working process of the rotor power system is as follows:

[0113] During the take-off phase: the drive assembly rotates to make the rotor ring 5 rotate relative to the stator. When the rotor 1 generates lift and moves upward, the gap between the rotor ring 5 and the upper stator 604 decreases, that is, the distance between the permanent magnets of the rotor ring 5 and the upper stator 604 decreases, and the repulsive force generated increases, thereby generating a greater supporting force on the non-rotating part until the rotor ring 5 is stably suspended between the upper stator 604 and the lower stator 605.

[0114] During the uniform flight, when the axial force generated by the axial magnetic suspension support assembly 4 is equal to the gravity of the non-rotating part, the rotor ring 5 is always kept stably suspended relative to the lower stator 605;

[0115] During the descent phase, the drive assembly is controlled to reduce the rotational output, so that the lift generated by the rotor 1 gradually decreases. When the lift gradually decreases to zero, the rotor ring 5 stops rotating and contacts the lower stator 605 .

[0116] In this embodiment, a second magnetic suspension system that generates a repulsive force can also be arranged on the upper end surface of the lower stator 605 and the lower end surface of the rotor ring 5 to generate a repulsive force to suspend the rotor ring 5 during the take-off phase, thereby ensuring that the rotor ring 5 is in a suspended state before or during rotation, thereby achieving frictionless starting.

[0117] In order to prevent collision between the rotor ring 5 and the lower stator 605 , balls or rollers are further provided on the upper end surface of the lower stator 605 .

[0118] Example 5

[0119] The difference between this embodiment and embodiment 4 is that Figure 6 and Figure 8 As shown, in order to further improve the heat dissipation system of the system, a heat dissipation structure 201 is provided on the inner wall of the through hole 2. The heat dissipation structure 201 guides the airflow, which can accelerate the entry of external cold air and the discharge of internal hot air, thereby improving the heat dissipation performance.

[0120] In this embodiment, the heat dissipation structure 201 is a plurality of heat dissipation blades arranged on the inner wall of the through hole 2. The arrangement of the heat dissipation blades can guide the air upward or downward after rotating, thereby accelerating the introduction of external cold air flow and the dissipation of internal hot air flow.

[0121] Example 6

[0122] The difference between this embodiment and embodiment 2, 4 or 5 is that Figure 8 As shown, the stator is provided with a heat dissipation microchannel 7 which is connected with the through hole 2 and the outside, and the heat dissipation microchannel 7 is opened inside the stator behind the electromagnet.

[0123] Example 7

[0124] The difference between this embodiment and embodiments 1-6 is that Figure 7 and Figure 8 As shown, an inner recess is provided on one side of the stator close to the through hole 2 of the rotor ring 5; when there are two stators, an upper inner recess 202 is provided on one side of the upper stator 604 close to the through hole 2 of the rotor ring 5, and a lower inner recess 203 is provided on one side of the lower stator 605 close to the through hole 2 of the rotor ring 5, and the inner recess expands the space at the through hole 2.

[0125] When the heat dissipation microchannel 7 is provided, the provision of the heat dissipation microchannel 7 increases the flow of air between the through hole 2 and the outside, facilitates the flow of air, and further improves the heat dissipation effect.

[0126] In this embodiment, if Fig.12As shown, the heat dissipation microchannel 7 is opened inside the stator behind the driving coil 603 and distributed along the radial direction of the stator, wherein a heat dissipation microchannel 7 is arranged behind each group of driving coils 603, so that the heat generated by the driving coil 603 can be dissipated outward along the airflow in the heat dissipation microchannel 7, thereby improving the heat dissipation effect.

[0127] When the radial limiting component 3 is an electromagnetic suspension system, wherein the first radial component 301 is a radial electromagnet and the electromagnetic coil of the radial electromagnet is located in the same radial direction as the driving coil 603, the heat dissipation microchannel 7 passes through the back of the first radial component 301 and the driving coil 603 respectively, so that the heat dissipation microchannel 7 can dissipate heat for the radial coil and the driving coil 603 at the same time, wherein each heat dissipation microchannel 7 is connected to the through hole and the outside world.

[0128] In this embodiment, if Fig.13 As shown, the heat dissipation microchannels 7 can also be interconnected in annular directions with different diameters.

[0129] Regarding the arrangement of the heat dissipation microchannel 7, in another embodiment, as Fig.14 As shown, the heat dissipation arrangement can also be as follows Fig.14 Method: a hollow grid structure 11 corresponding to the driving coil 603 is provided inside the stator, the hollow grid structure 11 is divided by a grid plate 12, and the hollow grid structure 11 is connected to the through hole 2 and the outside.

[0130] The hollow grille structure 11 can increase the airflow space for heat dissipation, which not only improves the heat dissipation effect but also reduces the weight of the stator to a greater extent.

[0131] Example 8

[0132] Regarding the connection between different stators and the connection between the rotor power system and the frame, in this embodiment, the upper stator 604 and the lower stator 605 are fixedly connected by a connecting member 10, and the connecting member 10 passes through the through hole 2. In this embodiment, Fig.16 As shown, regarding the fixation of the rotor power system, if the upper stator 604 and the lower stator 605 are not connected, it is necessary to connect both the upper stator 604 and the lower stator 605 to the frame part. If the upper stator 604 and the lower stator 605 are connected by a connector 10, the upper stator 604 or the lower stator 605 alone or both the upper stator 604 and the lower stator 605 can be connected to the frame part.

[0133] In this embodiment, the connecting member 10 may be a bolt, or a connecting rod, etc.

[0134] Example 9

[0135] This embodiment is different from other embodiments in that the drive system includes N rotor rings 5 ​​and N+1 stators, and the N rotor rings 5 ​​and N+1 stators constitute N drive modules, wherein one or two stators and one rotor ring 5 constitute a drive module, where N is greater than or equal to 2.

[0136] In this embodiment, the number of layers of the rotor 1 is equal to the number of the rotor rings 5 ​​.

[0137] The present invention can be configured with multiple layers of rotor rings 5 ​​and multiple layers of rotor blades 1, so as to adjust the lift as required.

[0138] In a specific embodiment, Fig. 9 , Fig.10 and Fig.11 As shown, N=2, the drive system includes 2 rotor rings 5 ​​and 3 stators, the rotor ring 5 includes a first rotor ring 501 and a second rotor ring 502, the stator includes a first stator 606, a second stator 607 and a third stator 608, an upper rotor 101 is arranged on the outer side of the first rotor ring 501, and a lower rotor 102 is arranged on the outer side of the second rotor ring 502.

[0139] For the case where there are N rotor rings 5 ​​and N+1 stators, taking N=2 as an example, the drive assembly can be installed in a variety of ways:

[0140] The first one is that the same driving coil 603 is set through the middle second stator 607 from top to bottom, which acts with the magnet 503 set on the first rotor ring 501 and the magnet 503 set on the second rotor ring 502 respectively, and can drive the first rotor ring 501 and the second rotor ring 502 to rotate at the same time.

[0141] The second type is: different driving coils 603 are set up through the middle second stator 607 from top to bottom, which respectively interact with the magnets 503 set on the first rotor ring 501 and the magnets 503 set on the second rotor ring 502 to drive the first rotor ring 501 and the second rotor ring 502 to rotate respectively.

[0142] The third method is: driving coils 603 are respectively arranged on the upper end surface and the lower end surface of the second stator 607, which respectively interact with the magnets 503 arranged on the first rotor ring 501 and the magnets 503 arranged on the second rotor ring 502, and respectively drive the first rotor ring 501 and the second rotor ring 502 to rotate.

[0143] The fourth type is: the inner side walls of the through holes 2 of the first rotor ring 501 and the second rotor ring 502 are both provided with a plurality of connecting rods 204, the connecting rods 204 of the first rotor ring 501 and the connecting rods 204 of the second rotor ring 502 are respectively connected to the two ends of the rotating rod 609, the rotating rod 609 passes through the center of the second stator 607 and can rotate at the central axis of the second stator 607, driving one of the rotor rings to rotate will drive the other rotor ring to rotate, wherein the rotor ring with the driving assembly installed is the main rotor ring, and the rotor ring that rotates passively is the auxiliary rotor ring, such as Fig.15 shown.

[0144] Example 10

[0145] An aircraft comprises the rotor power system in the above embodiment.

[0146] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shaftless magnetic levitation rotor power system, characterized in that: include: Rotor (1), Drive system, Axial magnetic suspension support assembly (4), The drive system comprises at least one rotor ring (5) and at least two stators, wherein the stator is arranged above and / or below the rotor ring (5), the rotor blade (1) is arranged on the outside of the rotor ring (5), and a through hole (2) is arranged in the middle of the rotor ring (5). The axial magnetic suspension support assembly (4) is arranged axially between at least one stator and the rotor ring (5) to achieve suspension between the stator and the rotor ring (5). The side wall of the stator is provided with an extension portion (601) extending in the axial direction, and the inner side wall of the extension portion (601) and the outer side wall of the rotor ring (5) are cooperated to be provided with a radial limit assembly (3) for ensuring the stable support of the stator and the rotor ring (5) in the radial direction. The axial magnetic suspension support component (4) and the radial limit component (3) both adopt electromagnetic suspension. When the drive system comprises a rotor ring (5) and two stators, the stator comprises an upper stator (604) and a lower stator (605), the upper stator (604) is arranged above the rotor ring (5), the upper end surface of the lower stator (605) and the lower end surface of the rotor ring (5) are provided with the axial magnetic suspension support assembly (4), the lower end surface of the upper stator (604) and the upper end surface of the rotor ring (5) are provided with the drive assembly, or the lower end surface of the upper stator (604) and the upper end surface of the rotor ring (5) are provided with the axial magnetic suspension support assembly (4), the upper end surface of the lower stator (605) and the lower end surface of the rotor ring (5) are provided with the drive assembly, and the drive assembly comprises an iron core arranged at the lower end of the upper stator and / or the upper end of the lower stator, a drive coil (603) wound on the iron core, and a magnet (503) arranged at the upper end and / or the lower end of the rotor ring (5), The inner wall of the through hole (2) is provided with a heat dissipation structure (201). The stator is provided with a heat dissipation microchannel (7) which is in communication with both the through hole (2) and the outside.

2. A shaftless magnetic levitation rotor power system according to claim 1, characterized in that: The rotor ring (5) and the stator are provided with a matching structure of a groove (8) and a raised track (9). When the rotor ring (5) is provided with a raised track (9), the stator is provided with a groove (8) corresponding to the raised track (9). When the rotor ring (5) is provided with a groove (8), the stator is provided with a raised track (9) corresponding to the groove (8). The side wall of the groove (8) and the raised track (9) are provided with a radial limit assembly (3) in cooperation, and the inner top wall of the groove (8) and the top of the raised track (9) are provided with the axial magnetic suspension support assembly (4) in cooperation.

3. A shaftless magnetic levitation rotor power system according to claim 1 or 2, characterized in that: An inner recess is provided on one side of the upper stator (604) and / or the lower stator (605) close to the through hole (2) of the rotor ring (5).

4. A shaftless magnetic levitation rotor power system according to claim 1 or 2, characterized in that: The upper stator (604) and the lower stator (605) are fixedly connected via a connecting piece (10), and the connecting piece (10) passes through the through hole (2).

5. A shaftless magnetically suspended rotor power system according to claim 1 or 2, characterized in that: The drive system comprises N rotor rings (5) and N+1 stators, the N rotor rings (5) and N+1 stators forming N drive modules, wherein one or two stators and one rotor ring (5) form one drive module, wherein N is greater than or equal to 2.

6. An aircraft, characterized in that: It comprises a shaftless magnetically suspended rotor power system as described in any one of claims 1 to 5.

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