A magnetically suspended rotor power system driven by a disk motor and an aircraft thereof

Abstract

The present invention discloses a magnetic levitation rotor power system driven by a disc motor and an aircraft thereof, which solves the technical problems that the rotor power system of the existing device has limited lift and poor overall stability and reliability. The present invention includes a rotor, a drive system and a magnetic levitation system. The drive system includes a rotating assembly and at least one motor stator. The rotating assembly includes a rotating shaft and at least one rotor ring. The rotor ring is fixed on the rotating shaft. The gap between the rotor ring, the motor stator and the rotating shaft forms an inner channel connected to the outside. The magnetic levitation system includes a radial limit assembly and an axial magnetic levitation support assembly. The axial magnetic levitation support assembly is arranged on the side of the rotor ring away from the motor stator. The axial magnetic levitation support assembly is a controllable magnetic levitation assembly. The radial limit assembly is radially arranged on the outside of the rotating shaft. The rotating assembly is provided with multiple layers of the rotors, and at least one layer of rotors is arranged above and below the driving motor. The present invention has the advantages of large lift, stable operation, and high reliability.

Description

Technical Field

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

[0002] Magnetic levitation technology is an advanced technology based on electromagnetic principles. It uses the attraction or repulsion force generated by the magnetic field to maintain a certain distance between the object and the supporting surface, thereby achieving suspension. Magnetic levitation technology has the advantages of no friction, low noise, high precision and smooth operation. With the continuous development and maturity of magnetic levitation technology, its application prospects in rotor systems are becoming more and more broad. On the one hand, magnetic levitation support has the characteristics of no contact and no friction, which can significantly increase the rotation speed of the rotor ring, thereby improving the lift and flight efficiency of the rotor. On the other hand, because magnetic levitation support eliminates the friction and vibration of traditional mechanical bearings, the vibration and noise levels of the rotor are significantly reduced, thereby improving the reliability of the rotor.

[0003] In the existing patent CN118083167A, a new coaxial twin-rotor UAV is disclosed. The rotation of the coaxial twin-propeller motor drives the rotation of the rotor to provide lift for the UAV. The rotation of the upper outer frame and the inner frame of the motor enables the UAV to complete pitch and roll movements, thereby improving its flexibility during flight. However, in this device, its double-layer rotors are installed in reverse and a speed change device is introduced, which is not conducive to the lightweight design of the rotor power system, and the motor used consumes a lot of energy.

[0004] In the patent with publication number CN220257156U and the name of the patent being a rotorcraft, a double rotor is disclosed, which uses a ball screw to transmit power to the double-layer rotor. The active part is a screw, and the double-layer rotors achieve reverse rotation through a speed change device. However, this device additionally designs a speed change device between the double-layer rotors, which is not conducive to the lightweight design of the rotor power system. The ball screw transmission generates serious heat and has low flight efficiency. In addition, the directions of the resistance torques between the double-layer rotors are different, which aggravates the torsion of the intermediate shaft and limits the overall strength of the rotorcraft.

[0005] In the patent with publication number CN118004415A and patent name “Rotorcraft”, a rotor structure is disclosed, which utilizes the Coanda effect to enable the powered rotor system to obtain additional lift. However, in this device, the lift provided by the single-layer rotor is limited, and the mechanical bearing support has severe mechanical losses, which reduces the working efficiency of the rotorcraft.

[0006] Based on the problems existing in the above-mentioned existing patents, it is necessary to study a rotor power system with strong carrying capacity and high reliability. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing rotor power system has limited lift and poor overall stability and reliability.

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

[0009] A magnetically suspended rotor power system driven by a disc motor, comprising:

[0010] Rotor, drive system and magnetic levitation system,

[0011] The driving system includes a rotating component and at least one motor stator, the rotating component includes a rotating shaft and at least one rotor ring, the motor stator and the rotor ring constitute a driving motor, the rotor ring is arranged on the rotating shaft, the rotating component can rotate relative to the motor stator, and the gap between the rotor ring, the motor stator and the rotating shaft forms an internal channel connected to the outside world. The magnetic suspension system includes a radial limiting component and an axial magnetic suspension support component. The axial magnetic suspension support component is arranged on the side of the rotor ring away from the motor stator. The axial magnetic suspension support component is a controllable magnetic suspension component for controlling the suspension between the axial coil of the axial magnetic suspension support component and the rotor ring. The radial limiting component is a controllable magnetic suspension component for maintaining the radial stability of the rotating shaft. Multiple layers of the rotors are arranged on the rotating component, and at least one layer of the rotor is arranged above and below the driving motor respectively.

[0012] The multi-layer rotor of the present invention rotates under the action of the drive system to generate greater lift. The axial magnetic levitation support component in the magnetic levitation system realizes the control of different levitation forces of the rotor power system in different stages of flight through controllable magnetic levitation, thereby achieving zero friction start-up, low-energy flight and safe landing, etc. The radial limit component in the magnetic levitation system can realize the stable rotation of the rotating shaft, and the inner channel is connected to the outside world, which is beneficial to the heat dissipation of the system. The above structures cooperate with each other to enhance the lift, flight stability and reliability of the rotor power system.

[0013] The present invention preferably provides a magnetic levitation rotor power system driven by a disc motor, wherein the drive motor includes at least two rotor rings and at least one motor stator. When the drive motor includes only two rotor rings and one motor stator, the two rotor rings and one motor stator constitute a bilateral motor, wherein the rotor rings are respectively a first rotor ring and a second rotor ring, wherein one side of the motor stator is provided with a first rotor ring, and the other side of the motor stator is provided with a second rotor ring, wherein the first rotor ring and the second rotor ring are both connected to the rotating shaft, and the gap between the motor stator and the first rotor ring, the second rotor ring and the rotating shaft forms the inner channel, and when the drive motor includes N+1 rotor rings and N motor stators, the N+1 rotor rings and the N motor stators constitute N bilateral motors, wherein the rotor ring located at the uppermost end in the axial direction is the first rotor ring, the rotor ring located at the lowermost end in the axial direction is the second rotor ring, and the rotor ring located between the first rotor ring and the second rotor ring is the third rotor ring, and N is a natural number ≥2, and the first rotor ring and the second rotor ring are both provided with an axial magnetic levitation support assembly on the side away from the motor stator.

[0014] In order to improve the rotor efficiency and the compactness of the structure, the present invention provides a bilateral motor, that is, one motor stator is matched with two rotor rings, and the bilateral motor can increase the power density of the electric motor, so that higher power output can be obtained in a limited space, providing a basis for driving the rotor to rotate and generate high lift. In addition, the compact structure of the bilateral motor reduces the complexity of the transmission mechanism and improves the space utilization and power transmission efficiency. In order to further improve the lift, multiple bilateral motors can be provided, and axial magnetic levitation support assemblies are provided in combination with the uppermost and lowermost rotor rings of the drive motor. The suspension force control of the axial magnetic levitation support assemblies at different upper and lower positions can be used to achieve high-efficiency, smooth and reliable flight in different flight stages.

[0015] Preferably, the radial limit assembly includes an upper radial limit assembly and a lower radial limit assembly, and the axial magnetic levitation support assembly includes an upper axial magnetic levitation support assembly and a lower axial magnetic levitation support assembly, the upper axial magnetic levitation support assembly is located above the first rotor ring, and is used to control the suspension between the first rotor ring and the axial coil of the upper axial magnetic levitation support assembly, the lower axial magnetic levitation support assembly is located below the second rotor ring, and is used to control the suspension between the second rotor ring and the axial coil of the lower axial magnetic levitation support assembly, the upper radial limit assembly is located above the upper axial magnetic levitation support assembly, and the lower radial limit assembly is located below the lower axial magnetic levitation support assembly.

[0016] The present invention arranges an upper radial limit assembly and a lower radial limit assembly, so that the rotating shaft remains relatively stable in the radial direction during operation to prevent the rotating shaft from swinging in the radial direction. The radial limit assemblies are arranged at both the upper and lower parts to further enhance the stability of the rotating shaft in the radial direction. The upper axial magnetic levitation support assembly and the lower axial magnetic levitation support assembly realize frictionless starting and the transmission of lift generated by the rotation of the rotor.

[0017] Preferably, the number of the lower axial magnetic suspension support assemblies is greater than the number of the upper axial magnetic suspension support assemblies.

[0018] Furthermore, the radial limiting component is a magnetic suspension component, and the magnetic suspension component includes electromagnetic suspension, superconducting magnetic suspension and permanent magnetic suspension.

[0019] A controllable magnetic suspension component, such as electromagnetic suspension, is further preferred.

[0020] In the present invention, the rotating component includes a rotating assembly and a rotor.

[0021] Non-rotating components include other components of the rotor power system other than the rotating components.

[0022] When the axial magnetic suspension support assembly adopts electromagnetic suspension, the working process of the rotor system is:

[0023] During the startup phase: the upper axial magnetic suspension support assembly generates electromagnetic suction to lift the first rotor ring relative to the motor stator to a stable suspension state.

[0024] Ascending phase: As the lift increases to be equal to the gravity of the rotating parts, the electromagnetic attraction of the upper axial magnetic levitation support assembly decreases to zero as the lift increases. When the lift continues to increase, the electromagnetic attraction of the lower axial magnetic levitation support assembly increases to be equal to the gravity of the non-rotating parts and maintains the stability of the suspension state.

[0025] Descent phase: As the lift decreases, the electromagnetic attraction of the lower axial magnetic levitation support assembly continues to maintain the stability of the suspension state.

[0026] Stop phase: As the lift gradually decreases to zero, the electromagnetic attraction of the lower axial magnetic levitation support assembly gradually decreases to zero, while the electromagnetic attraction of the upper axial magnetic levitation support assembly gradually increases to maintain the suspension state of the rotor relative to the motor stator. When the lift is zero, the electromagnetic attraction of the upper axial magnetic levitation support assembly also gradually decreases to zero until the second rotor ring contacts the lower axial magnetic levitation support assembly.

[0027] Preferably, the upper axial magnetic levitation support assembly includes an upper axial iron core and an upper axial coil sleeved on the outer side of the upper axial iron core, and the upper axial coil cooperates with the upper end surface of the first rotor ring to form a magnetic levitation assembly; the lower axial magnetic levitation support assembly includes a lower axial iron core and two lower axial coils sleeved on the outer side of the lower axial iron core, and the two lower axial coils cooperate with the lower end surface of the second rotor ring to form two magnetic levitation assemblies.

[0028] Furthermore, the first rotor ring and the second rotor ring are both ferromagnetic iron yokes, or magnets are arranged on the upper end surface of the first rotor ring and the lower end surface of the second rotor ring to form a controllable magnetic suspension component between the axial coil.

[0029] In the present invention, the overall stability of the device is ensured by reasonably arranging the axial coils of the upper axial magnetic levitation support assembly and the lower axial magnetic levitation support assembly. It should be noted that since the lower axial magnetic levitation support assembly undertakes the lift transmission function, higher requirements are placed on the performance of the lower axial magnetic levitation support assembly, so two lower axial magnetic levitation assemblies are arranged to ensure the lift transmission efficiency.

[0030] Preferably, the upper radial limit assembly and the lower radial limit assembly have the same structure, including a radial iron core and a radial coil sleeved on the radial iron core, the radial coils are arranged in 4 numbers and are evenly distributed along the circumference of the rotating shaft, the rotating shaft is provided with a magnet that cooperates with the radial coil to generate magnetic force or the rotating shaft is made of ferromagnetic material to provide stable radial limiting and ensure the stability of the rotating shaft rotation.

[0031] Preferably, the radial limit assembly, the axial magnetic levitation support assembly and the rotor ring are designed as an integral whole, that is, a sleeve is arranged on the rotor ring, the rotor ring and the sleeve as a whole constitute an iron yoke, the sleeve is sleeved on the rotating shaft, the sleeve cooperates with the radial coil to generate a repulsive force to play a role of radial limit, the rotor ring and the axial coil can cooperate to generate an attractive force, and the rotor ring and the driving coil on the motor stator act to generate a driving force, thereby making the structure simple and compact and reducing the overall mass.

[0032] Furthermore, the rotating shaft is provided with a heat dissipation structure at the inner channel, and the motor stator is provided with a heat dissipation channel connected with the inner channel and the outside.

[0033] When the drive system is in working state, the heat it generates can be diffused outward through the internal channel and the heat dissipation channel for passive heat dissipation. By setting a heat dissipation structure on the rotating shaft, the heat dissipation structure will be driven to rotate while the rotating shaft rotates, thereby throwing hot air outward along the heat dissipation channel set on the motor stator for active heat dissipation. This heat dissipation structure ensures the stable operation of the drive system and improves its service life.

[0034] Preferably, the rotating shaft is provided with an inner recess, and the heat dissipation structure is located in the inner recess.

[0035] The inner duct includes an upper duct formed by the motor stator and the first rotor ring, a lower duct formed by the motor stator and the second rotor ring, and a central duct formed between the motor stator and the inner recess of the rotating shaft. The upper duct, the lower duct and the central duct are interconnected, and the inner recess arranged on the rotating shaft is conducive to expanding the space of the central duct, facilitating the introduction of airflow and the discharge under the action of the heat dissipation structure to enhance the airflow flow.

[0036] The present invention arranges an inner recess on the rotating shaft. On the one hand, the rotation of the heat dissipation structure will cause the inner recess to form a negative pressure space. At this time, the external gas will be sucked into the central duct through the upper duct and the lower duct under the action of the pressure difference, and will be thrown outward under the rotation of the heat dissipation structure of the central duct. The thrown-out airflow will flow out along the heat dissipation channel. This process will take away the heat of the driving coil. On the other hand, the setting of the inner recess makes the setting of the rotating shaft and the subsequent motor more compact, thereby improving the space utilization.

[0037] Furthermore, the motor stator comprises an iron core, a driving coil and a coil sleeve, the driving coil is wound on the iron core, the coil sleeve surrounds the driving coil, and the coil sleeve is provided with the heat dissipation channel.

[0038] The present invention provides a coil sleeve, which, on the one hand, encloses the driving coil, and the heat generated by the driving coil can be conducted to the coil sleeve to achieve passive heat dissipation. In order to improve the passive heat dissipation effect, a material with good thermal conductivity and light weight, such as aluminum alloy, can be selected to prepare the coil sleeve; on the other hand, a heat dissipation channel connected to the inner duct and the outside is opened in the coil sleeve. When the rotation of the shaft drives the heat dissipation structure to rotate, a negative pressure is formed in the inner concave portion, so that the outside airflow flows into the inner concave portion through the upper duct and the lower duct, and the airflow is thrown out under the action of the heat dissipation structure, and flows out along the heat dissipation channel to take away the heat generated by the driving coil, thereby achieving active heat dissipation. In addition, when the hot airflow flows out from the heat dissipation channel, it will also fully contact the side wall of the coil sleeve to better conduct the heat.

[0039] Preferably, the coil sleeve is arranged along the circumference of the rotating shaft, and the coil sleeve is sleeved on the corresponding driving coil, and the upper and lower ends of the heat dissipation channel do not penetrate the upper and lower ends of the coil sleeve.

[0040] The upper and lower ends of the heat dissipation channel do not penetrate the upper and lower ends of the coil sleeve, so that the heat dissipation channel is isolated from the upper duct and the lower duct, which can prevent the hot air flow out of the heat dissipation channel from affecting the entry of cold air in the upper and lower ducts, so that the entry of cold air and the removal of hot air do not interfere with each other.

[0041] Preferably, the coil sleeve comprises a plurality of interconnected sub-coil sleeves, the number of the sub-coil sleeves is less than or equal to the number of the driving coils, and the heat dissipation channel is arranged between two adjacent sub-coil sleeves.

[0042] In order to improve the heat dissipation efficiency, the number of the sub-coil sleeves is consistent with the number of the driving coils, and each sub-coil sleeve is correspondingly sleeved with a driving coil.

[0043] When the number of sub-coil sleeves is less than the number of driving coils arranged on the motor stator, two or more adjacent sub-coil sleeves can be arranged as a group in one sub-coil sleeve, and each group of driving coils is isolated from each other by the sub-coil sleeves.

[0044] When the number of sub-coil sleeves is equal to the number of driving coils arranged on the motor stator, each sub-coil sleeve is correspondingly sleeved with a driving coil, so that adjacent driving coils are isolated from each other by the sub-coil sleeves.

[0045] The driving coil is connected to the corresponding sub-coil sleeve to transfer heat. In addition, it should be noted that the heat dissipation channel is arranged between two adjacent sub-coil sleeves, and the heat dissipation channel is not connected to the upper duct and the lower duct, so that the airflow inhaled from the inner duct and the airflow discharged from the heat dissipation channel are isolated from each other and do not interfere with each other, thereby improving the heat dissipation effect.

[0046] Preferably, a bracket is connected to the outer side of the coil sleeve, and a plurality of connecting parts are arranged on the bracket, and the connecting parts are connected to the axial magnetic suspension support assembly and / or the radial limit assembly.

[0047] Preferably, the connecting member is configured as a claw corresponding to the radial limiting assembly and the axial magnetic suspension support assembly.

[0048] Preferably, the clamping claw includes an upper radial clamping claw, a lower radial clamping claw, an upper axial clamping claw, and a lower axial clamping claw. The upper radial clamping claw and the lower radial clamping claw are respectively connected to the upper radial limit assembly and the lower radial limit assembly, the upper axial clamping claw and the lower axial clamping claw are respectively connected to the upper axial magnetic levitation support assembly and the lower axial magnetic levitation support assembly, and the center position of the bracket is connected to the coil sleeve.

[0049] The present invention provides a bracket and a claw on the bracket, on the one hand, to fix and support the radial limit assembly and the axial magnetic suspension support assembly to maintain overall stability; on the other hand, the heat generated by the drive coil will be transferred to the coil sleeve, and the coil sleeve will transfer the heat to the bracket, thereby realizing passive heat dissipation of the drive coil.

[0050] Preferably, the brackets are arranged in 3 groups and are evenly distributed on the outside of the coil sleeve, thereby reducing the weight while ensuring the support stability.

[0051] Preferably, the rotor includes at least two layers of rotors, and the rotors are connected to the rotating assembly.

[0052] Furthermore, the rotor includes an upper rotor and a lower rotor, and the bracket is located between the upper rotor and the lower rotor.

[0053] The present invention sets a double-layer rotor and sets the bracket between the upper rotor and the lower rotor. On the one hand, the double-rotor motor structure is set to cooperate with the double-layer rotor structure to increase the motor torque and improve the lift. On the other hand, the double-layer rotor plays an auxiliary heat dissipation role for the bracket. Auxiliary heat dissipation is specifically as follows: First of all, it should be explained that the upper rotor and the lower rotor are respectively arranged above and below the bracket. When the rotating assembly drives the upper rotor and the lower rotor to rotate, the upper rotor and the lower rotor will inevitably generate downward downwash airflow due to the lift provided, and the downwash airflow generated by the upper rotor will take away the heat on the bracket.

[0054] Preferably, the heat dissipation structure is a flow-guiding structure for actively dissipating heat by driving air flow to be guided out as the shaft rotates.

[0055] Preferably, the heat dissipation structure is arranged in an arc shape, and the direction of the inner concave surface of the arc is opposite to the direction of rotation of the shaft when flying upward.

[0056] The present invention enables a negative pressure space to be better formed in the inner recessed portion by setting a heat dissipation structure. It should be noted that, in the present invention, the heat dissipation structure is axially arranged around the inner recessed portion, and the heat dissipation structure is arranged in an arc shape to increase the contact area with the airflow when the shaft rotates, thereby improving the heat dissipation efficiency. It should be noted that the direction of the arc-shaped inner concave surface is opposite to the direction of rotation of the shaft when flying upward, so as to increase the wind impact area during the rotation process and increase the internal negative pressure.

[0057] Preferably, the rotor power system also includes an outer duct structure, and the rotor, drive system and magnetic levitation system are all located in the outer duct structure. The outer duct structure is connected to the bracket. The outer duct structure is conducive to introducing airflow from top to bottom, enhancing heat dissipation and flight efficiency.

[0058] The working principle of heat dissipation of the present invention is: the dual-rotor motor structure drives the rotating assembly to rotate, and the rotating assembly drives the upper rotor and the lower rotor to rotate coaxially and in the same direction to improve lift. During the operation of the motor, the drive coil on the motor stator and the coils of the radial limit assembly and the axial magnetic suspension support assembly will all generate heat, which will be transferred through two heat dissipation methods: active heat dissipation and passive heat dissipation.

[0059] Passive heat dissipation: The heat generated by the drive coil is transferred to the coil sleeve, and the heat of the coil sleeve and the heat generated by the coils on the radial limit assembly and the axial magnetic suspension support assembly are then transferred to the bracket, and then heat is exchanged with the external air for heat dissipation;

[0060] Active heat dissipation: On the one hand, the rotation of the shaft drives the rotation of the heat dissipation structure. The rotation of the heat dissipation structure forms a negative pressure space in the inner concave part, and the external airflow is sucked into the inner concave part through the inner channel between the rotor ring and the motor stator, and thrown out through the heat dissipation channel under the action of the heat dissipation structure. The thrown airflow will take away the heat on the coil sleeve, thereby achieving cooling inside the motor; on the other hand, the heat transferred to the frame through passive heat dissipation will be taken away under the action of the downwash airflow generated by the rotation of the upper rotor, thereby achieving auxiliary heat dissipation.

[0061] An aircraft comprises the magnetic levitation rotor power system driven by the above-mentioned disc motor.

[0062] The present invention has the following advantages and beneficial effects:

[0063] 1. The multi-layer rotor of the present invention rotates under the action of the drive system to generate greater lift. The axial magnetic suspension support component in the magnetic suspension system realizes the control of different suspension force sizes of the rotor power system at different stages of flight through controllable magnetic suspension. The radial limit component in the magnetic suspension system can realize the stable rotation of the rotating shaft, and the inner channel is connected to the outside world, which is beneficial to the heat dissipation of the system. The above structures cooperate with each other to enhance the lift, flight stability and reliability of the rotor power system.

[0064] 2. The present invention designs a magnetic levitation rotor power system driven by a disc motor. The dual-rotor structure can increase the power density of the motor, so that higher power output can be obtained in a limited space, providing a basis for driving the rotor to rotate and generate high lift. In addition, the compact structure of the dual-rotor structure reduces the complexity of the transmission mechanism and improves space utilization and power transmission efficiency.

[0065] 3. The upper radial limit assembly and the lower radial limit assembly provided in the present invention prevent the rotating shaft from swinging in the radial direction, making the rotor installation more stable. By providing the upper axial magnetic levitation support assembly and the lower axial magnetic levitation support assembly, the frictionless starting of the rotor is achieved. At the same time, the lift generated by the rotor will also be transmitted to the lower axial magnetic levitation support assembly, thereby maintaining uniform lift and achieving lift transmission, thereby driving the body connected to the device to rise.

[0066] 4. The present invention provides an inner channel and a heat dissipation structure. Cold air enters through the inner channel and is thrown out along the heat dissipation channel under the action of the heat dissipation structure, thereby taking away the heat generated by the driving coil. When the hot air flows out along the heat dissipation channel, it also exchanges heat with the side wall of the heat dissipation channel to achieve passive heat dissipation. The combination of active and passive heat dissipation ensures the stable operation of the motor and improves its service life.

[0067] The present invention sets a coil sleeve and connects the driving coil of the motor stator. The heat generated by the driving coil can be conducted to the coil sleeve to achieve passive heat dissipation. The present invention sets a heat dissipation channel on the coil sleeve. The heat dissipation channel is connected with the central duct and the outside world. Active heat dissipation is achieved under the action of the heat dissipation structure. In addition, the upper and lower ends of the coil sleeve are isolated from the upper duct and the lower duct, so that the airflow inhaled from the inner duct and the airflow discharged from the heat dissipation channel are isolated from each other without interfering with each other, thereby improving the heat dissipation effect.

[0068] The present invention provides a bracket to achieve overall support for the motor on the one hand, and on the other hand, the bracket is connected to the coil sleeve, the radial limit assembly and the axial magnetic suspension support assembly for heat conduction.

[0069] 5. The present invention realizes lift enhancement and enhanced carrying capacity by providing a double-layer rotor in combination with a dual-rotor motor structure, and the downwash airflow generated by the upper rotor also dissipates heat for the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] 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:

[0071] Figure 1 It is a schematic diagram of the overall structure of the rotor power system of the present invention;

[0072] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0073] Figure 3 This is a schematic diagram of the structure of the bracket and the coil sleeve of the present invention;

[0074] Figure 4 This is a schematic diagram of the transverse cross-sectional structure of the upper axial magnetic suspension support assembly of the present invention;

[0075] Figure 5 This is a schematic diagram of the transverse cross-sectional structure of the lower axial magnetic suspension support assembly of the present invention;

[0076] Figure 6 It is a schematic diagram of the structure of the upper radial limit assembly of the present invention;

[0077] Figure 7It is a schematic diagram of the structure of the rotor power system of the present invention without the bracket;

[0078] Figure 8 This is a schematic diagram of the rotating shaft structure of the present invention;

[0079] Fig. 9 It is a schematic diagram of the structure of another rotating shaft, rotor ring and rotor blade of the present invention;

[0080] Fig.10 The schematic diagram of the structure of the outer duct is provided in the present invention.

[0081] The names of the components in the attached drawings are as follows:

[0082] 1-rotor, 100-upper rotor, 101-lower rotor; 2-rotating shaft, 201-heat dissipation structure, 202-inner concave portion; 3-upper radial limit assembly, 301-radial iron core, 302-radial coil; 4-upper axial magnetic suspension support assembly, 401-upper axial iron core, 402-upper axial coil; 5-first rotor ring; 6-motor stator, 601-driving coil; 7-second rotor ring; 8-lower axial magnetic suspension support assembly, 8 01-lower axial core, 802-lower axial coil; 9-lower radial limit assembly; 10-bracket, 1001-upper radial claw, 1002-upper axial claw, 1003-sub-coil sleeve, 1004-lower axial claw, 1005-lower radial claw; 11-inner duct, 110-upper duct, 111-lower duct, 112-center duct; 12-spline sleeve; 13-sleeve, 14-outer duct structure, 15-connecting rod. DETAILED DESCRIPTION

[0083] 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.

[0084] like Figure 1-Figure 10 As shown, a magnetically suspended rotor power system driven by a disc motor comprises:

[0085] Rotor 1, drive system and magnetic suspension system,

[0086] The driving system includes a rotating component and at least one motor stator 6, the rotating component includes a rotating shaft 2 and at least one rotor ring, the motor stator 6 and the rotor ring constitute a driving motor, the rotor ring is arranged on the rotating shaft 2, the rotating component can rotate relative to the motor stator 6, the gap between the rotor ring, the motor stator 6 and the rotating shaft 2 forms an inner channel 11 connected to the outside world, the magnetic suspension system includes a radial limiting component and an axial magnetic suspension support component, the side of the rotor ring away from the motor stator 6 is provided with an axial magnetic suspension support component that generates magnetic force with the rotor ring, the axial magnetic suspension support component is a controllable magnetic suspension component, which is used to control the suspension between the axial coil of the axial magnetic suspension support component and the rotor ring, the radial limiting component is a controllable magnetic suspension component, which is used to maintain the radial stability of the rotating shaft 2,

[0087] The rotating assembly is provided with multiple layers of the rotor 1, and at least one layer of the rotor 1 is respectively provided on the upper side and the lower side of the driving motor.

[0088] The radial limiting assembly includes a magnetic member on the rotating shaft 2 and a radial coil 302 radially arranged outside the rotating shaft 2. The magnetic member and the radial coil 302 cooperate to generate radial limiting.

[0089] In this embodiment, the magnetically acting member is a component that can interact with the radial coil 302, such as a ferromagnetic material.

[0090] In this embodiment, the motor stator 6 can form a single-sided motor with a rotor ring, or a motor stator 6 and two rotor rings can form a double-sided motor, or multiple motor stators 6 and multiple rotor rings can form multiple double-sided motors, which is selected according to lift requirements.

[0091] In this embodiment, regarding the setting of the radial limiting components, as required, multiple radial limiting components may be set in the circumferential direction of the rotating shaft 2 , and multiple radial limiting components may also be set at different axial positions of the rotating shaft 2 .

[0092] The radial limiting component is a controllable magnetic suspension component, and the controllable magnetic suspension component is electromagnetic suspension or superconducting magnetic suspension. If it is electromagnetic suspension, the radial iron yoke or radial magnet of the radial limiting component is arranged on the rotating shaft 2, and the radial coil 302 is arranged at a position opposite to the radial iron yoke or radial magnet.

[0093] The axial magnetic suspension support assembly may be one or more depending on the suspension requirements. The axial magnetic suspension support assembly may be arranged at different positions of the rotor ring according to different rotor rings.

[0094] In this embodiment, the multi-layer rotor 1 includes at least two layers and there is at least one layer of rotor 1 at each end of the rotating shaft 2 .

[0095] In another embodiment of the present invention, the drive motor includes at least two rotor rings and at least one motor stator 6. When the drive motor includes only two rotor rings and one motor stator 6, the two rotor rings and one motor stator 6 constitute a bilateral motor. The rotor rings are respectively a first rotor ring 5 and a second rotor ring 7. The first rotor ring 5 is provided on one side of the motor stator 6, and the second rotor ring 7 is provided on the other side of the motor stator 6. The first rotor ring 5 and the second rotor ring 7 are both fixedly connected or sleeved to the rotating shaft 2. The motor stator 6 and the first rotor ring 5, the second rotor ring 7 and the rotating shaft 2 are connected to each other. The gap forms the inner channel 11. When the driving motor includes N+1 rotor rings and N motor stators 6, the N+1 rotor rings and the N motor stators 6 constitute N bilateral motors, wherein the rotor ring located at the axial uppermost end is the first rotor ring 5, the rotor ring located at the axial lowermost end is the second rotor ring 7, and the rotor ring located between the first rotor ring 5 and the second rotor ring 7 is the third rotor ring. N is a natural number ≥2. The first rotor ring 5 and the second rotor ring 7 are both provided with an axial magnetic suspension support assembly on one side away from the motor stator 6. The setting of the driving motor selects N according to needs.

[0096] In another embodiment of the present invention, Figure 1 , Figure 2 As shown, the radial limit assembly includes an upper radial limit assembly 3 and a lower radial limit assembly 9, and the axial magnetic suspension support assembly includes an upper axial magnetic suspension support assembly 4 and a lower axial magnetic suspension support assembly 8. The upper axial magnetic suspension support assembly 4 is located above the first rotor ring 5, and is used to control the suspension between the first rotor ring 5 and the upper axial coil 402 of the upper axial magnetic suspension support assembly 4, and the lower axial magnetic suspension support assembly 8 is located below the second rotor ring 7, and is used to control the suspension between the second rotor ring 7 and the lower axial coil 802 of the lower axial magnetic suspension support assembly 8.

[0097] The upper radial limiting assembly 3 is located above the upper axial magnetic suspension support assembly 4 , and the lower radial limiting assembly 9 is located below the lower axial magnetic suspension support assembly 8 .

[0098] The present invention arranges an upper radial limit assembly 3 and a lower radial limit assembly 9, so that the rotating shaft 2 remains relatively stable in the radial direction during operation to prevent the rotating shaft 2 from swinging in the radial direction. The radial limit assemblies are arranged at both the upper and lower parts, so as to further enhance the stability of the rotating shaft 2 in the radial direction. The upper axial magnetic levitation support assembly 4 and the lower axial magnetic levitation support assembly 8 realize frictionless starting and the transmission of lift generated by the rotation of the rotor.

[0099] In the present invention, the rotating component includes a rotating assembly and a rotor.

[0100] The non-rotating components include other components in the rotor 1 power system except the rotating components.

[0101] When the axial magnetic suspension support assembly adopts electromagnetic suspension, the working process of the rotor 1 system is:

[0102] During the startup phase: the upper axial magnetic suspension support assembly 4 generates electromagnetic attraction to lift the first rotor ring 5 relative to the motor stator 6 to a stable suspension state.

[0103] Ascending stage: In the process of the lift increasing to be equal to the gravity of the rotating parts, the electromagnetic attraction of the upper axial magnetic levitation support assembly 4 decreases to zero as the lift increases. When the lift continues to increase, the electromagnetic attraction of the lower axial magnetic levitation support assembly 8 increases to be equal to the gravity of the non-rotating parts and maintains the stability of the suspension state.

[0104] Descending stage: As the lift decreases, the electromagnetic attraction of the lower axial magnetic suspension support assembly 8 continues to maintain the stability of the suspension state.

[0105] Stopping stage: as the lift gradually decreases to zero, the electromagnetic attraction of the lower axial magnetic levitation support assembly 8 gradually decreases to zero, while the electromagnetic attraction of the upper axial magnetic levitation support assembly 4 gradually increases to maintain the suspension state of the rotor 1 relative to the motor stator 6. When the lift is zero, the electromagnetic attraction of the upper axial magnetic levitation support assembly 4 also gradually decreases to zero until the second rotor ring 7 contacts the lower axial magnetic levitation support assembly 8. In order to protect the lower axial magnetic levitation support assembly 8 and the second rotor ring 7, balls may also be arranged on the second rotor ring 7 and / or the lower axial magnetic levitation support assembly 8.

[0106] In another implementation of the present invention, the axial magnetic suspension support assembly is still an electromagnetic suspension assembly, and a magnet is arranged on the rotor ring opposite to the axial coil, and an electromagnetic repulsion force is generated between the electromagnet and the magnet by controlling the current of the electromagnet, so that the working process is as follows:

[0107] During the startup phase: the lower axial magnetic suspension support assembly 8 generates an electromagnetic repulsive force to create a gap between the rotor ring and the motor stator 6 until the rotor ring reaches a stable suspension state.

[0108] Ascending phase: As the lift increases to be equal to the gravity of the rotating parts, the electromagnetic repulsion of the lower axial magnetic levitation support assembly 8 decreases to zero as the lift increases. When the lift continues to increase, the electromagnetic repulsion of the upper axial magnetic levitation support assembly 4 increases to be equal to the gravity of the non-rotating parts and maintains the stability of the suspended state.

[0109] Descending stage: As the lift decreases, the electromagnetic repulsion of the upper axial magnetic suspension support assembly 4 continues to maintain the stability of the suspension state.

[0110] Stop phase: As the lift gradually decreases to zero, the electromagnetic repulsion of the upper axial magnetic levitation support assembly 4 gradually decreases to zero, while the electromagnetic repulsion of the lower axial magnetic levitation support assembly 8 gradually increases to maintain the suspension state of the rotor 1 relative to the motor stator 6. When the lift is zero, the electromagnetic repulsion of the lower axial magnetic levitation support assembly 8 also gradually decreases to zero until the second rotor ring 7 contacts the lower axial magnetic levitation support assembly 8.

[0111] In another embodiment, the number of the lower axial magnetic suspension support assemblies 8 is greater than the number of the upper axial magnetic suspension support assemblies 4 .

[0112] In this embodiment, if Figure 4 , Figure 5 As shown, the upper axial magnetic suspension support assembly 4 includes an upper axial iron core 401 and an upper axial coil 402 arranged on the upper axial iron core 401, and the upper axial coil 402 corresponds to the upper end of the first rotor ring 5; the lower axial magnetic suspension support assembly 8 includes a lower axial iron core 801 and two lower axial coils 802 arranged on the lower axial iron core 801, and the two lower axial coils 802 correspond to the lower end of the second rotor ring 7. The first rotor ring 5 and the second rotor ring 7 are both made of ferromagnetic materials and can interact with the electromagnetic coils.

[0113] In this embodiment, the overall stability of the device is ensured by reasonably setting the axial coils of the upper axial magnetic levitation support assembly 4 and the lower axial magnetic levitation support assembly 8. It should be noted that since the lower axial magnetic levitation support assembly 8 undertakes the lift transmission function, higher requirements are placed on the performance of the lower axial magnetic levitation support assembly 8, so two lower axial coils 802 are set to ensure the lift transmission efficiency.

[0114] In this embodiment, the first rotor ring 5 and the second rotor ring 7 are both made of ferromagnetic materials, such as 45 steel, or magnets are arranged on the upper end surface of the first rotor ring 5 and the lower end surface of the second rotor ring 7 to form a controllable magnetic suspension assembly between the axial coil.

[0115] In this embodiment, the upper radial limit assembly 3 and the lower radial limit assembly 9 have the same structure, including a radial iron core 301 and a radial coil 302 arranged on the radial iron core 301, the radial coil 302 is set to 4 and is evenly distributed along the circumference of the rotating shaft 2, the rotating shaft 2 is provided with a magnet that cooperates with the radial coil 302 to generate magnetic force, or the rotating shaft 2 is made of ferromagnetic material to provide stable radial limiting and ensure the stability of the rotation of the rotating shaft 2.

[0116] In this embodiment, a layer of rotor 1 is fixedly connected or sleeved on both ends of the rotating shaft 2, and each layer includes two blades.

[0117] In another embodiment of the present invention, a sleeve 13 is provided on the rotor ring, and the rotor ring and the sleeve 13 constitute an iron yoke as a whole. The iron yoke is made of 45 steel. The sleeve 13 is sleeved on the rotating shaft 2 and rotates with the rotating shaft 2. The sleeve 13 cooperates with the radial coil 302 to generate suction to play a role of radial limiting. The rotor ring and the axial coil can cooperate to generate suction, and the rotor ring and the motor stator 6 generate driving force, thereby making the structure compact and reducing the overall mass.

[0118] In another embodiment, the rotating shaft 2 is provided with a heat dissipation structure 201 at the inner channel 11 , and the motor stator 6 is provided with a heat dissipation channel connected with the inner channel 11 and the outside.

[0119] When the drive system is in operation, the heat generated by the drive system can be diffused outward through the inner channel 11 for passive heat dissipation. By setting a heat dissipation structure 201 on the rotating shaft 2, the rotating shaft 2 will also drive the heat dissipation structure 201 to rotate, thereby actively dissipating heat by throwing hot air outward along the heat dissipation channel set on the motor stator 6. The heat dissipation structure 201 ensures the stable operation of the drive system and improves its service life.

[0120] In another embodiment of the present invention, Figure 8 As shown, the rotating shaft 2 is provided with an inner recess 202 , and the heat dissipation structure 201 is located in the inner recess 202 .

[0121] The inner duct 11 includes an upper duct 110 formed by the motor stator 6 and the first rotor ring 5, a lower duct 111 formed by the motor stator 6 and the second rotor ring 7, and a central duct 112 formed between the motor stator 6 and the inner recess 202 of the rotating shaft 2. The upper duct 110, the lower duct 111 and the central duct 112 are interconnected, wherein the inner recess 202 arranged on the rotating shaft 2 is beneficial to expanding the space of the central duct 112, facilitating the introduction of airflow and the discharge under the action of the heat dissipation structure 201 to enhance the airflow flow.

[0122] In this embodiment, the first rotor ring 5 and the second rotor ring 7 can both be driving rotor rings that can cooperate with the motor stator 6 to generate driving force, or one of the rotor rings can be the driving rotor ring and the other does not participate in the driving but only forms a gap with the motor stator to constitute a part of the inner channel 11.

[0123] In this embodiment, the inner recess 202, on the one hand, enables the heat dissipation structure 201 to better form a negative pressure space during the rotation process. At this time, the external gas will be sucked into the central duct 112 through the upper duct 110 and the lower duct 111 under the action of the pressure difference, and then thrown outward under the rotation of the heat dissipation structure 201 in the central duct 112. The thrown-out airflow will flow out along the heat dissipation channel. This process will take away the heat of the drive coil 601. On the other hand, the setting of the inner recess 202 makes the setting of the rotating shaft 2 and the subsequent motor more compact, thereby improving space utilization.

[0124] In other embodiments, regarding the disposition of the heat dissipation structure 201 and the inner recess 202: Fig. 9 As shown, the rotating shaft 2 adopts a spline shaft, and a spline sleeve 12 is sleeved on the rotating shaft 2. The heat dissipation structure 201 is arranged on the outside of the spline sleeve 12. A sleeve 13 is arranged on the rotor ring, and the rotor ring is sleeved on the rotating shaft 2 through the sleeve 13. The upper and lower sleeves 13 are designed so that the rotating shaft 2 forms an inner recess 202 at the position of the spline sleeve 12, which can also play the effect of expanding the central duct 112. The heat dissipation structure 201 is located in the inner recess 202, which also increases the airflow and accelerates the suction of external cold air into the central duct 112.

[0125] In another embodiment of the present invention, a coil sleeve is wrapped around the outer side of the motor stator 6, and a heat dissipation channel connected to the inner channel 11 and the outside is opened on the side wall of the coil sleeve.

[0126] In this embodiment, the coil sleeve encloses the driving coil 601 on the motor stator 6. On the one hand, the heat generated by the driving coil 601 can be conducted to the coil sleeve to achieve passive heat dissipation. In order to improve the passive heat dissipation effect, a material with good thermal conductivity and light weight, such as aluminum alloy, can be selected to prepare the coil sleeve; on the other hand, a heat dissipation channel connected to the inner duct 11 and the outside is opened in the coil sleeve. When the rotation of the shaft 2 drives the heat dissipation structure 201 to rotate, a negative pressure is formed in the inner recess 202, so that the external airflow flows into the inner recess 202 through the upper duct 110 and the lower duct 111. Under the action of the heat dissipation structure 201, the airflow is thrown out and flows out along the heat dissipation channel to take away the heat generated by the driving coil 601, thereby achieving active heat dissipation. In addition, when the hot air flows out from the heat dissipation channel, it will also fully contact the side wall of the coil sleeve to better conduct heat.

[0127] In another embodiment of the present invention, Figure 1 As shown, the coil sleeve is arranged along the circumference of the rotating shaft 2, and the coil sleeve is sleeved on the corresponding driving coil 601, and the upper and lower ends of the heat dissipation channel do not penetrate the upper and lower ends of the coil sleeve.

[0128] The heat dissipation channel is isolated from the upper duct 110 and the lower duct 111, so that the hot air flow out of the heat dissipation channel can be prevented from affecting the entry of cold air into the upper and lower ducts 111, so that the entry of cold air and the removal of hot air do not interfere with each other.

[0129] In one embodiment of the present invention, the coil sleeve includes a plurality of sub-coil sleeves 1003 connected to each other to form a ring shape, the number of the sub-coil sleeves 1003 is equal to the number of the driving coils 601 , and the heat dissipation channel is arranged between two adjacent sub-coil sleeves 1003 .

[0130] In this embodiment, the number of sub-coil sleeves 1003 can also be half, one quarter, etc. of the number of driving coils 601. When the number of sub-coil sleeves 1003 is half of the number of driving coils 601, one sub-coil sleeve 1003 encloses two driving coils 601, and when the number of sub-coil sleeves 1003 is one quarter of the number of driving coils 601, one sub-coil sleeve 1003 encloses four driving coils 601.

[0131] It should be noted that, considering the heat dissipation performance, it is best if the number of the sub-coil sleeves 1003 is consistent with the number of the drive coils 601 , so that each sub-coil sleeve 1003 is correspondingly sleeved with one drive coil 601 .

[0132] In this embodiment, adjacent drive coils 601 are isolated from each other by the sub-coil sleeves 1003 , and the drive coils 601 are connected to the corresponding sub-coil sleeves 1003 to transfer heat, thereby achieving uniform heat dissipation for all drive coils 601 .

[0133] In another embodiment of the present invention, Figure 2 , Figure 3 As shown, a bracket 10 is connected to the outside of the coil sleeve, and a plurality of connecting parts are arranged on the bracket 10, and the connecting parts are connected to the axial magnetic suspension support assembly and / or the radial limit assembly. The connecting parts include an upper radial claw 1001, a lower radial claw 1005, an upper axial claw 1002, and a lower axial claw 1004. The upper radial claw 1001 and the lower radial claw 1005 are respectively connected to the upper radial limit assembly 3 and the lower radial limit assembly 9, the upper axial claw 1002 and the lower axial claw 1004 are respectively connected to the upper axial magnetic suspension support assembly 4 and the lower axial magnetic suspension support assembly 8, and the center position of the bracket 10 is connected to the coil sleeve.

[0134] In this embodiment, a clamping groove that cooperates with the clamping claw is provided on the radial limiting component and / or the axial magnetic levitation support component, and the clamping claw is an arc-shaped structure that cooperates with the annular radial limiting component and / or the axial magnetic levitation support component, so as to increase the contact area between the two, make the connection more secure and have better heat dissipation performance.

[0135] In this embodiment, it should be noted that, in addition to the claw structure, the connecting member may also be other connecting structures, such as bonding with thermal conductive adhesive or other clamping mechanisms.

[0136] In this embodiment, a bracket and a claw are provided to, on the one hand, fix and support the radial limit assembly and the axial magnetic suspension support assembly to maintain overall stability; on the other hand, the heat generated by the drive coil 601 will be transferred to the coil sleeve, and the coil sleeve will transfer the heat to the bracket 10, thereby achieving passive heat dissipation of the drive coil 601.

[0137] In this embodiment, if Figure 3 As shown, the brackets 10 are arranged in three groups and are evenly distributed on the outside of the coil sleeve, so as to reduce the weight of the whole machine as much as possible while ensuring the support stability.

[0138] It should be noted that, in the present embodiment, the brackets 10 can also be arranged in 4 or 5 groups as required.

[0139] In another embodiment of the present invention, Figure 1 , Figure 2 , Figure 7 As shown, the rotor 1 includes an upper rotor 100 and a lower rotor 101, and the rotor 1 is connected to the rotating assembly. The upper rotor 100 and the lower rotor 101 are respectively located above and below the motor, and the bracket 10 is located between the upper rotor 100 and the lower rotor 101.

[0140] In this embodiment, the rotor 1 is directly connected to the rotating shaft 2 in the rotating assembly.

[0141] In this embodiment, the double-layer rotor 1 plays an auxiliary heat dissipation role for the bracket 10. When the rotating shaft 2 drives the upper rotor 100 and the lower rotor 101 to rotate, the upper rotor 100 and the lower rotor 101 will inevitably generate a downward downwash airflow due to the lift provided, and the downwash airflow generated by the upper rotor 100 will take away the heat on the bracket 10. The source of this heat is the passive heat dissipation of the drive coil 601 and the active heat dissipation of the heat dissipation structure 201.

[0142] In another embodiment of the rotor installation method, a sleeve 13 is provided on the rotor ring, and the rotor ring and the sleeve 13 integrally constitute an iron yoke, which is made of 45 steel. The sleeve 13 is sleeved on the rotating shaft 2, and the sleeve 13 cooperates with the radial coil 302 to generate suction to play a role of radial limiting. The annular surface of the rotor ring and the axial coil can cooperate to generate suction, and the permanent magnets provided on the rotor ring act with the driving coil 601 of the motor stator 6 to generate driving force. The sleeve 13 extends from the position of the rotor ring to the end of the rotating shaft 2, and the rotor 1 is installed on the extended end of the sleeve 13, or the rotor 1 is fixedly installed on the end of the rotating shaft 2 through the mounting ring, and the end of the rotating shaft 2 is fixed by the end cover to prevent the mounting ring from slipping out.

[0143] Regarding the heat dissipation structure 201, in one embodiment, the heat dissipation structure 201 is a flow-guiding structure for actively dissipating heat by driving air flow to be guided out as the shaft 2 rotates.

[0144] In this embodiment, if Figure 8 As shown, the heat dissipation structure 201 is arranged in an arc shape, and the direction of the inner concave surface of the arc is opposite to the direction in which the rotating shaft 2 rotates when flying upward.

[0145] In this embodiment, by setting the heat dissipation structure 201, a negative pressure space can be better formed in the inner recess 202. In the present invention, the heat dissipation structure 201 is axially arranged around the inner recess 202, and the heat dissipation structure 201 is arranged in an arc shape to increase the contact area with the airflow when the shaft 2 rotates, thereby improving the heat dissipation efficiency. The direction of the arc-shaped inner concave surface is opposite to the direction of rotation of the shaft 2 when flying upward, so as to increase the wind impact area during the rotation process and increase the internal negative pressure.

[0146] It should be noted that the heat dissipation structure 201 may also be other structures, such as a spiral protrusion, as long as it can promote the airflow to be sucked in from the inner channel 11 and thrown out from the heat dissipation channel as the shaft 2 rotates.

[0147] In another embodiment, Fig.10 As shown, the rotor power system also includes an outer duct structure 14, and the rotor 1 and the drive system are both located in the outer duct structure 14. The outer duct structure 14 is connected to the bracket 10 through a connecting rod 15. Both ends of the outer duct structure 14 are penetrated, and the diameter of the opening gradually decreases from the upper end to the lower end. The outer duct structure 14 is conducive to introducing airflow from top to bottom, thereby enhancing heat dissipation and flight efficiency.

[0148] An aircraft comprises the magnetic levitation rotor power system driven by the above-mentioned disc motor.

[0149] In the present invention, the “axial direction” refers to the direction along the axis of the rotating shaft 2, and the “radial direction” refers to the direction perpendicular to the axis of the rotating shaft 2. The above and below are based on the directions shown in the drawings.

[0150] 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 magnetically suspended rotor power system driven by a disk motor, characterized in that: include: Rotor (1), drive system and magnetic suspension system, The drive system comprises a rotating assembly and at least one motor stator (6), wherein the rotating assembly comprises a rotating shaft (2) and at least two rotor rings, wherein at least one rotor ring is a driving rotor ring and forms a driving motor with the motor electronics (6), and the rotating assembly can rotate relative to the motor stator (6). When the driving motor only comprises two rotor rings and one motor stator (6), the rotor rings are respectively a first rotor ring (5) and a second rotor ring (7). The first rotor ring (5) is arranged on one side of the motor stator (6), and the second rotor ring (7) is arranged on the other side of the motor stator (6). The first rotor ring (5) and the second rotor ring (7) are both connected to the rotating shaft (2), and the gap between the motor stator (6) and the first rotor ring (5), the second rotor ring (7) and the rotating shaft (2) forms an inner channel (11). The magnetic suspension system comprises a radial limit assembly and an axial magnetic suspension support assembly. The axial magnetic suspension support assembly is electromagnetically suspended and is used to control the suspension between the axial coil of the axial magnetic suspension support assembly and the rotor ring. The axial magnetic suspension support assembly comprises an upper axial magnetic suspension support assembly (4) and a lower axial magnetic suspension support assembly (8). The upper axial magnetic suspension support assembly (4) is located above the first rotor ring (5) and is used to control the suspension between the first rotor ring (5) and the axial coil of the upper axial magnetic suspension support assembly (4). The lower axial magnetic suspension support assembly (8) is located below the second rotor ring (7) and is used to control the suspension between the second rotor ring (7) and the axial coil of the lower axial magnetic suspension support assembly (8). The radial limiting component is an electromagnetic suspension, which is used to maintain the stability of the rotating shaft (2) in the radial direction. The radial limiting assembly comprises an upper radial limiting assembly (3) and a lower radial limiting assembly (9). The upper radial limit assembly (3) is located above the upper axial magnetic suspension support assembly (4), and the lower radial limit assembly (9) is located below the lower axial magnetic suspension support assembly (8). The rotating assembly is provided with multiple layers of the rotor (1), and at least one layer of the rotor (1) is respectively provided above and below the driving motor.

2. A magnetically suspended rotor power system driven by a disk motor according to claim 1, characterized in that: When the drive motor comprises N+1 rotor rings and N motor stators (6), the N+1 rotor rings and the N motor stators (6) constitute N bilateral motors, wherein, based on the axial direction of the rotating shaft (2), the rotor ring located at the uppermost end in the axial direction is the first rotor ring (5), the rotor ring located at the lowermost end in the axial direction is the second rotor ring (7), and the rotor ring located between the first rotor ring (5) and the second rotor ring (7) is the third rotor ring, and N is a natural number greater than or equal to 2. An axial magnetic suspension support assembly is provided on the side of the first rotor ring (5) and the second rotor ring (7) away from the motor stator (6).

3. The magnetically suspended rotor power system driven by a disk motor according to claim 1, characterized in that: The rotating shaft (2) is provided with a heat dissipation structure (201) located at the inner channel (11), and the motor stator (6) is provided with a heat dissipation channel connected to the inner channel (11) and the outside.

4. A magnetically suspended rotor power system driven by a disk motor according to claim 3, characterized in that: The rotating shaft (2) is provided with an inner recess (202), and the heat dissipation structure (201) is located in the inner recess (202).

5. The magnetically suspended rotor power system driven by a disk motor according to claim 3, characterized in that: The motor stator (6) comprises an iron core, a drive coil (601) and a coil sleeve, the drive coil (601) is wound on the iron core, the coil sleeve surrounds the drive coil (601), and the coil sleeve is provided with the heat dissipation channel.

6. A magnetically suspended rotor power system driven by a disk motor according to claim 5, characterized in that: The coil sleeve comprises a plurality of interconnected sub-coil sleeves (1003), the number of the sub-coil sleeves (1003) being less than or equal to the number of the drive coils (601), and the heat dissipation channel is provided between two adjacent sub-coil sleeves (1003).

7. A magnetically suspended rotor power system driven by a disk motor according to claim 6, characterized in that: The number of the sub-coil sleeves (1003) is consistent with the number of the drive coils (601), and each sub-coil sleeve (1003) is sleeved with a corresponding drive coil (601).

8. The magnetically suspended rotor power system driven by a disk motor according to claim 5, characterized in that: A bracket (10) is connected to the outside of the coil sleeve, and a plurality of connecting pieces are arranged on the bracket (10), and the connecting pieces are connected to the axial magnetic suspension support assembly and / or the radial limit assembly.

9. The magnetically suspended rotor power system driven by a disk motor according to claim 8, characterized in that: The rotor (1) comprises an upper rotor (100) and a lower rotor (101), wherein the upper rotor (100) and the lower rotor (101) are respectively arranged at the upper and lower ends of a rotating shaft (2), and the bracket (10) is located between the upper rotor (100) and the lower rotor (101).

10. The magnetically suspended rotor power system driven by a disk motor according to claim 3, characterized in that: The heat dissipation structure (201) is a flow-guiding structure, which is used to drive airflow to be guided out as the rotating shaft (2) rotates to perform active heat dissipation.

11. A magnetically suspended rotor power system driven by a disk motor according to any one of claims 1 to 10, characterized in that: It also comprises an outer duct structure (14), wherein the rotor (1), the drive system and the magnetic suspension system are all located in the outer duct structure (14), and the outer duct structure (14) is connected to the motor stator (6).

12. An aircraft, characterized in that: A magnetically suspended rotor power system comprising a disc motor driven by any one of claims 1 to 11.

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