Locking type magnetic suspension motor

Abstract

A locking type magnetic suspension motor relates to the field of machinery, in particular to a motor technology. Comprising a supporting device; a magnet mechanism is arranged on the supporting device and is called as a fixed magnet mechanism; the rotating mechanism rotates relative to the supporting device, and a magnet mechanism which repels the fixed magnet mechanism and is called as a floating magnet mechanism is arranged on the rotating mechanism; the floating magnet mechanism and the fixed magnet mechanism are arranged around the rotating axis of the rotating mechanism; in the floating magnet mechanism and the fixed magnet mechanism, the number of one mechanism is two, the two mechanisms are arranged in a two-layer structure, and at least part of magnets of the other mechanism are clamped between the two-layer structure; the two mechanisms of the two-layer structure and the other mechanism oppositely clamped between the two mechanisms have magnetic force repelling the other mechanism. The suspension tendency is realized.

Description

Technical Field

[0001] The utility model relates to the field of machinery, specifically to motor technology. Background Art

[0002] Electric motors include generators and motors. A significant portion of the energy loss and noise in these motors comes from rotor friction. To reduce rotor friction, technologies such as magnetic bearings, air bearings, and oil bearings have been applied, resulting in the design of magnetically levitated motors (including generators and motors), air bearings (including generators and motors), and even oil bearings (including generators and motors).

[0003] The suspension bearings of these motors (including generators and motors) require additional energy consumption and complex auxiliary equipment for work support.

[0004] For example, magnetic levitation motors are used to precisely control magnetic levitation bearings, and require a complex frequency conversion system that can transmit signals at high speed and respond to electromagnetic changes.

[0005] Air suspension motors require a larger air compressor system to provide working support.

[0006] Oil-suspended motors require a larger hydraulic system to provide working support.

[0007] These motors (including generators and electric motors) require additional energy supply, so if there is a power outage when rotating at high speed, there will be a risk of damage.

[0008] Therefore, although magnetic levitation motors, air levitation motors, and oil levitation motors reduce friction, energy consumption, and noise, they have complex auxiliary equipment, so they have problems such as large size and high cost, as well as risks of power failure and damage.

[0009] A system is needed which has the advantages of more stable suspension, lower cost and lower energy consumption in terms of comprehensive performance.

[0010] This system is independent of the bearing and works completely on its own or provides performance supplement to the bearing. Utility Model Content

[0011] The purpose of the utility model is to provide a locked magnetic levitation motor to solve at least one of the above technical problems.

[0012] The technical problem solved by the utility model can be achieved by adopting the following technical solutions:

[0013] A locked magnetic levitation motor includes a motor system, wherein the motor system includes a motor housing, a stator, and a rotor, and is characterized in that:

[0014] The motor system is provided with a double-locking magnetic suspension support;

[0015] The double-locking magnetic suspension support includes a support device;

[0016] The supporting device is provided with a magnet mechanism, which is called a fixed magnet mechanism;

[0017] It also includes a rotating mechanism that rotates relative to the supporting device, and the rotating mechanism is provided with a magnetic mechanism that repels the fixed magnetic mechanism, which is called a floating magnetic mechanism;

[0018] The floating magnet mechanism and the fixed magnet mechanism are both arranged around the rotation axis of the rotating mechanism;

[0019] Two of the floating magnet mechanism and the fixed magnet mechanism are provided, and the two mechanisms are arranged in a two-layer structure, and at least part of the magnet of the other mechanism is sandwiched between the two layers;

[0020] The two mechanisms of the two-layer structure both generate a repulsive magnetic force on the other mechanism sandwiched between them;

[0021] The support device and rotating mechanism of the double-locking magnetic suspension support adopt the following structure of the motor system, the support device adopts at least one of the motor housing and the stator, and the rotating mechanism adopts the rotor.

[0022] The floating magnet mechanism can be directly or indirectly arranged on the rotor to provide support force for the rotor.

[0023] The motor system can be a generator system or a motor system.

[0024] The stator is arranged in the motor housing;

[0025] The rotor is placed vertically, and is provided with a rotor shaft, which is in a vertical working state;

[0026] A support bearing for supporting the weight of the rotor is directly or indirectly provided between the rotor and the motor housing; a base for fixing the motor to be placed vertically is provided below the motor housing.

[0027] The rotor can be an inner rotor or an outer rotor. Moreover, the rotor can preferably be a permanent magnet rotor.

[0028] In conventional motor designs, especially large motor designs, the motor's rotor is placed horizontally, meaning that the rotor rotates while lying down.

[0029] Through extensive testing and actual use, researchers have verified that this conventional design allows for a larger area to bear the rotor's weight, making it easier to distribute force evenly and effectively, thus supporting the rotor's weight in a balanced manner. Furthermore, the rotor's force output is more balanced, less prone to shaking, and capable of delivering greater radial force.

[0030] This patent no longer uses the conventional design, but adopts the design of vertical rotor. This design will make the weight of the heavier rotor be applied in the axial direction of the rotor.

[0031] Generally speaking, the length of a rotor is greater than its diameter, especially for permanent magnet rotors. Therefore, from a mechanical perspective, the design in this patent will weaken the rotor's load-bearing strength and stability compared to conventional designs. Furthermore, compared to the rotor's radial force, the output stability is also reduced.

[0032] The inventors of the utility model have discovered that when placed vertically, the frictional force of a permanent magnet motor, particularly a permanent magnet brushless motor, during rotation comes primarily from pressure on the bearings. This pressure is composed of two components: gravity and the external forces acting or reacting upon the motor's output.

[0033] Traditional magnetic levitation motors, air levitation motors, and oil levitation motors all use electromagnetic force, high-pressure air film, and high-pressure oil film to suspend the built-in rotor as horizontally as possible when the motor is placed horizontally.

[0034] Although this design reduces the unit area of ​​the rotor, it increases the force-bearing surface. A large force-bearing surface is more difficult to balance.

[0035] The design of this patent has many shortcomings in conventional motor application environments, but it has significant technical effects in specific application scenarios.

[0036] The design of this patent has outstanding technical effects and substantial technological progress in working scenarios where the axial thrust or suction is large and the radial force is relatively balanced.

[0037] In an environment with large axial thrust, the design of conventional motors or generators will increase the bearing force due to the compression of the thrust, resulting in greater rotational resistance.

[0038] Especially in high-speed, high-power motors or generators, this thrust is much greater than the weight of the rotor. According to conventional designs, there will be disadvantages in this special operating environment.

[0039] The design of this patent can operate with low friction or even no friction under such working conditions.

[0040] A double-locking magnetic suspension support is provided between the rotor shaft and the motor housing for generating a force to push the rotor away from the support bearing;

[0041] The thrust generated by the double-locked magnetic levitation support is greater than three-fifths of the rotor's gravity.

[0042] This patent not only takes into account the adverse factors in special operating environments, but also partially or completely overcomes the combined force of gravity and thrust through the magnetic field, thereby greatly reducing friction, reducing energy consumption, and improving efficiency; reducing wear, reducing failure rate, reducing noise, and increasing service life.

[0043] Furthermore, the thrust generated by the double-locked magnetic levitation support is less than or equal to the resultant force of the rotor's gravity and the force generated during operation; and greater than four-fifths of the resultant force of the rotor's gravity and the force generated during operation.

[0044] Ensure that the thrust generated by the double-locked magnetic suspension does not completely push the rotor away. This design is preferred when the support bearing is a mechanical bearing. It avoids reverse pressure on the support bearing, which would otherwise generate additional friction.

[0045] Furthermore, the rotor is linked to a working component that generates a downward force to rotate;

[0046] The thrust generated by the double-locked magnetic levitation support is greater than the weight of the rotor, but less than or equal to the resultant force of the weight of the rotor and the force generated during operation.

[0047] The force generated when the rotor is running can be a downward thrust or an upward pull.

[0048] When the working parts rotate, they generate a downward thrust, and the resulting force causes the rotor to move downward, thereby reducing some of the pressure on the support bearings or even completely eliminating the pressure.

[0049] A fluid driving component is mounted on the rotor shaft of the rotor, which serves as a working component and allows fluid to flow into the rotor from one side and push the fluid out axially.

[0050] Alternatively, a fluid driving component is mounted on the rotor shaft of the rotor, which serves as a working component and allows fluid to flow in axially and push out fluid laterally.

[0051] By concentrating the working force on the rotor's axial direction, the force on the rotor side is balanced as much as possible, reducing or even avoiding the generation of lateral pressure. This reduces friction, allows for extremely high speeds, and reduces noise.

[0052] It is also possible to generate an upward pulling force in other driving modes, such as when a fluid impacts a working component upward from below to cause it to perform work, or when a fluid is pushed downward.

[0053] The working component can be an axial fluid driving component, specifically an axial airflow or fluid driving component in a propeller, a turbine, or a scroll. Other forms of axial airflow or fluid driving components can also be used.

[0054] When the motor is an electric motor, the working component may be a propeller, a turbine, or a scroll, etc., which drives the fluid to flow. When the working component pushes the fluid upward, it generates a downward reaction force.

[0055] In the prior art, a scroll can be used in a scroll compressor as a fluid driving component.

[0056] When the motor is a generator, the working component may be a scroll, propeller, turbine, or other working component driven by the fluid flow. When the working component is impacted downward by the fluid, a downward force may be generated.

[0057] It also includes a flow guide device, and the working component is sleeved in the flow guide device;

[0058] The flow guide device is provided with two openings, one for air inlet and the other for air outlet;

[0059] One type of opening is a vertically upward opening, which is located above the working component.

[0060] Furthermore, it is preferred that an upward flow guide tube at least 20 cm high is provided at the opening.

[0061] The height can be calculated from the upper edge of the working part. The guide tube is directed upward within a height of 20 cm. After exceeding a height of at least 20 cm, the direction of the guide tube is allowed to change.

[0062] The high-height guide tube ensures that the air flow remains relatively stable when it is close to the working parts, whether it is inhaled or discharged from the top, thus minimizing the uneven force on each side of the working parts.

[0063] A mixing flow mechanism can be provided in front of the air inlet and the air outlet to mix the inlet and the outlet airflow, thereby evenly distributing the pressure on each side.

[0064] The flow mixing mechanism may be a spiral tube, a propeller or other mechanisms that can mix the airflow evenly.

[0065] Specific embodiment of setting permanent magnetic bearing on rotor shaft:

[0066] A permanent magnetic bearing is also provided, which includes an outer magnetic ring and an inner magnetic ring nested in the outer magnetic ring and having magnetic repulsion; a gap is provided between the outer magnetic ring and the inner magnetic ring;

[0067] The outer magnetic ring is fixed on one of the stator and the motor housing, and the inner magnetic ring is arranged on the rotor shaft.

[0068] By setting up permanent magnetic bearings, the rotor shaft can be stabilized and can achieve contactless and frictionless rotation with the stator.

[0069] Permanent magnetic bearings can be arranged at two positions, the upper and lower positions of the rotor shaft.

[0070] Two permanent magnetic bearings provide high stability and limit vibration.

[0071] Alternatively, a permanent magnetic bearing may be provided on the upper portion of the rotor shaft, and another permanent magnetic bearing may be provided at the support bearing.

[0072] It is even possible to integrate the support bearing and the permanent magnetic bearing into a single structure.

[0073] Specific embodiment 1 of the support bearing structure:

[0074] Furthermore, the thrust generated by the double-locked magnetic suspension support is equal to the combined force of the rotor's gravity and the force generated during operation;

[0075] The support bearing is a magnetic support bearing; the magnetic support bearing includes two repelling magnets, one magnet is located at the bottom, and the other magnet is located above the magnet and is a permanent magnet fixed on the rotor shaft.

[0076] The two repelling magnets are separated by repulsion, thereby reducing or even eliminating friction.

[0077] The magnetic support bearing has a mechanical self-balancing function within the set range. This allows the double-locked magnetic suspension support to automatically adjust to a state where the thrust and the resultant force are equal within a certain range. This allows for a completely frictionless operation, allowing for extremely high-speed operation.

[0078] The support bearing is a magnetic support bearing, which can be a permanent magnetic bearing or an electromagnetic bearing.

[0079] It should be noted that the magnetic support bearing is not only provided with these two magnets, but also may be provided with other auxiliary structures.

[0080] Furthermore, the magnetic support bearing further comprises a sliding sleeve, the sliding sleeve being fixed on the motor housing, and the magnet at the bottom being arranged below the sliding sleeve;

[0081] The permanent magnet fixed on the rotor shaft is sleeved in the sliding sleeve to form an up and down sliding connection.

[0082] Furthermore, the magnetic support bearing has two repelling magnets, one of which is an electromagnet located at the bottom and the other is a permanent magnet located above the electromagnet and fixed to the rotor shaft;

[0083] The electromagnet is further connected to a magnetic force control circuit, and the magnetic force control circuit is further connected to a magnetic force sensor for detecting the magnetic force of the permanent magnet.

[0084] The magnetic sensor can be set at a position above the height of the permanent magnet on the rotor shaft.

[0085] When the permanent magnet moves upward and approaches the magnetic sensor beyond the amplitude, the magnetic sensor sensing signal is enhanced, and the magnetic force of the electromagnet is reduced through the magnetic control circuit, thereby shortening the distance the permanent magnet is pushed away, and causing the rotor shaft to return downward.

[0086] When the permanent magnet moves downward and away from the magnetic sensor beyond the amplitude, the magnetic sensor sensing signal weakens, and the magnetic force of the electromagnet is enhanced through the magnetic control circuit, thereby increasing the distance the permanent magnet is pushed away, and causing the rotor axis to return upward.

[0087] Furthermore, through dynamic adjustment of the magnetic control circuit and control of the rotor shaft, the height position of the rotor in the stator can be relatively fixed, or even kept suspended for a long time, so that the entire motor is in an ideal operating state.

[0088] In this patent, the magnetic sensor is placed above the permanent magnet, rather than below it, effectively avoiding the influence of the magnetic field of the electromagnet below. This improves control accuracy. The magnetic sensor can be a Hall effect sensor.

[0089] As for the magnetic force control circuit, it can be implemented using a multi-stage amplifier integrated circuit and auxiliary circuits. It only needs to set the amplification ratio according to the position of the magnetic sensor and select the amplification logic relationship.

[0090] The magnetic force control circuit can be composed of CD4069 multi-stage amplifier integrated circuit, plus auxiliary components such as resistors, capacitors, power amplifiers, etc. The Hall sensor can be OH137 or 44E.

[0091] The difficulty of implementing the magnetic control circuit is greatly reduced compared to the high-frequency suspension control circuit system of the magnetic levitation motor, and the possibility of loss of control is smaller and the stability is higher.

[0092] A limiting mechanism for limiting the sliding range may be provided between the rotor shaft and the support bearing.

[0093] Specific embodiment 2 of the support bearing structure:

[0094] Furthermore, the thrust generated by the double-locked magnetic suspension support is equal to the combined force of the rotor's gravity and the force generated during operation;

[0095] The supporting bearing adopts a rotary bearing with a sliding structure;

[0096] The rotating bearing includes an outer ring, a rolling element, and an inner ring;

[0097] The outer ring is directly or indirectly fixedly connected to the motor housing, and the inner ring is connected to the rotor shaft in an up-and-down sliding manner.

[0098] In the above design, a support bearing that allows for up and down sliding is provided. By allowing the rotor shaft to slide up and down relative to the support bearing, the double-locked magnetic suspension support is automatically adjusted to a state where the thrust and the resultant force are equal within a certain range.

[0099] This allows for an almost complete absence of mechanical friction, allowing for extremely high speeds.

[0100] Moreover, compared with the design scheme using magnetic support bearings, it has the characteristics of low cost, simple production process, high radial stability, and allows relatively high radial force output.

[0101] However, it should be noted that this design does not completely eliminate mechanical friction, and the no-load running speed is slightly lower than that of a solution using magnetic support bearings.

[0102] An up-and-down sliding structure is used between the rotor shaft and the inner ring to limit the speed difference.

[0103] By limiting the speed difference, sliding in the rotational direction between the rotor shaft and the inner ring is avoided, and problems such as wear, heat, and noise caused by relative sliding friction are avoided.

[0104] The up and down sliding structure that limits the speed difference can be that the connection between the rotor shaft and the inner ring adopts a columnar structure with a non-circular cross-section, and the inner side of the inner ring adopts a structure that allows the columnar structure to be inserted and slides, but limits the relative rotation range.

[0105] For example, the cross section of the rotor shaft may be elliptical, and the inner side of the inner ring may also be elliptical; the cross section may be triangular, and the inner side of the inner ring may also be triangular; the cross section may be quadrilateral, and the inner side of the inner ring may also be quadrilateral.

[0106] Preferably, the cross section of the rotor shaft is elliptical, and the inner side of the inner ring is also elliptical.

[0107] Avoid the problem of excessive bearing capacity at sharp corners, avoid wear and tear, ensure long-term smoothness, and increase service life.

[0108] A limiting mechanism for limiting the sliding amplitude is provided between the rotor shaft and the support bearing.

[0109] Avoid the problem that the rotor shaft, under the action of the force generated during operation, the thrust generated by the magnetic field, or other forces, has excessive relative movement with the stator, affecting the operation of the equipment.

[0110] A limiting mechanism for limiting the sliding amplitude is provided between the rotor shaft and the inner ring of the support bearing, and an elastic mechanism is provided between the rotor shaft and the support bearing.

[0111] The elastic mechanism provides flexible stroke compensation for operating forces, magnetic field thrust, and other forces. This prevents significant displacement of the rotor shaft due to force fluctuations. Furthermore, it prevents collisions between the rotor shaft and support bearings caused by force fluctuations, ensuring smooth equipment operation and the safety of the support bearings.

[0112] The limiting mechanism includes a stopper provided on the rotor shaft to prevent the rotor shaft from excessively sliding through the inner ring.

[0113] An elastic mechanism is further provided between the rotor shaft and the inner ring. One end of the elastic mechanism is fixedly connected to one of the rotor shaft and the inner ring; the other end is allowed to be in a non-contact state with the other in a working state.

[0114] When not in contact with one another, pressure on the inner ring can be avoided.

[0115] For example, the elastic mechanism using a spring structure can be a spring structure with one end fixed on the rotor shaft; the other end is provided with a sleeve ring that is sleeved on the rotor shaft and allows sliding, and the sleeve ring is a structure that limits the passage through the inner ring.

[0116] Arranging the spring structure on the rotor shaft instead of the inner ring can avoid friction caused by relative shaking between the rotor shaft and the inner ring.

[0117] The spring structure is placed on the rotor shaft, and a collar is used to limit the shaking of the other end, so that the spring structure is relatively stable during high-speed rotation.

[0118] Yes, the inner ring can be used as the limiting component of the limiting mechanism.

[0119] Because the collar is a structure that limits the passage through the inner ring, when the rotor shaft moves more, the collar presses against the inner ring, generating a reaction force and achieving flexible position limiting. If the rotor shaft moves too much, the elasticity continues to increase, achieving further position limiting.

[0120] Furthermore, the elastic mechanism may also be an elastic mechanism composed of two repelling magnets; one of the two repelling magnets is fixed on the rotor shaft, and the other is fixed on the inner ring.

[0121] When the rotor shaft moves more, the two repelling magnets increase the reaction force, achieving flexible limit. Preferably, a limit component, such as a limit stop, is provided on the rotor shaft to prevent the magnets from colliding.

[0122] This elastic mechanism composed of two repelling magnets can prevent the spring from shaking under high-speed rotation, and avoid wear and noise caused by the vibration between the rotor shaft and the inner ring due to high-speed rotation.

[0123] In addition, it is also allowed to be applied when the rotor is subjected to an upward force (such as a pulling force) from the working part. When subjected to a pulling force, some reverse settings can be performed according to the above description of this patent. BRIEF DESCRIPTION OF THE DRAWINGS

[0124] Figure 1 This is a schematic diagram of the cross-sectional arrangement structure of a locked magnetic levitation motor.

[0125] Figure 2 It is a cross-sectional schematic diagram of a double-locking magnetic levitation support that uses two external permanent magnet rings to fix the magnet mechanism.

[0126] Figure 3 This is a schematic cross-sectional view of a double-locking magnetic levitation support that uses an external permanent magnet ring to fix the magnet mechanism.

[0127] Figure 4 A schematic cross-sectional view of a double-locking magnetic levitation support with a two-layer fixed magnet mechanism that uses an inner and outer layer stacked structure.

[0128] Figure 5 It is a cross-sectional schematic diagram of a double-locking magnetic levitation support using a floating magnet mechanism with two permanent magnet rings and magnetic fields facing the same direction.

[0129] Figure 6 A schematic cross-sectional view of a double-locking magnetic levitation support with a two-layer floating magnet mechanism that uses an inner and outer layer stacked structure.

[0130] Figure 7 Schematic diagram of the arrangement of two permanent magnet rings coaxially nested. DETAILED DESCRIPTION

[0131] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is further explained below with reference to specific illustrations.

[0132] Reference Figure 1 , a locked magnetic levitation motor, comprising a motor system, the motor system comprising a motor housing 1, a stator 2, a rotor 3, and the motor system is provided with a double-locked magnetic levitation support 5;

[0133] The double-locking magnetic suspension support 5 includes a support device 10;

[0134] The support device 10 is provided with a magnet mechanism, referred to as a fixed magnet mechanism 8;

[0135] It also includes a rotating mechanism 11 that rotates relative to the supporting device 10. The rotating mechanism 11 is provided with a magnetic mechanism that repels the fixed magnetic mechanism 8, which is called a floating magnetic mechanism 9;

[0136] The floating magnet mechanism 9 and the fixed magnet mechanism 8 are both arranged around the rotation axis of the rotating mechanism 11;

[0137] Two of the floating magnet mechanism 9 and the fixed magnet mechanism 8 are provided, and the two mechanisms are arranged in a two-layer structure, and at least part of the magnet of the other mechanism is sandwiched between the two layers;

[0138] The two mechanisms of the two-layer structure both generate a repulsive magnetic force on the other mechanism sandwiched between them;

[0139] The support device 10 and the rotating mechanism 11 of the double-locking magnetic suspension support 5 adopt the following structure of the motor system: the support device 10 adopts at least one of the motor housing 1 and the stator 2 , and the rotating mechanism 11 adopts the rotor 3 .

[0140] The floating magnet mechanism 9 may be directly or indirectly provided on the rotor 3 to provide support force for the rotor 3 .

[0141] The motor system can be a generator system or a motor system.

[0142] Example:

[0143] The stator 2 is arranged in the motor housing 1;

[0144] The rotor 3 is placed vertically, and is provided with a rotor shaft 4, which is in a vertical working state;

[0145] A support bearing for supporting the weight of the rotor 3 is directly or indirectly provided between the rotor 3 and the motor housing 1 ; a base for fixing the motor in a vertical position is provided below the motor housing 1 .

[0146] The rotor 3 may be an inner rotor 3 or an outer rotor 3. Moreover, the rotor 3 may preferably be a permanent magnet rotor 3.

[0147] In conventional motor designs, especially large motor designs, the rotor 3 of the motor is placed horizontally, that is, the rotor 3 is allowed to rotate while lying down.

[0148] Through extensive testing and actual use, researchers have verified that this conventional design can increase the area supporting the weight of rotor 3, making it easier to evenly distribute force, and can effectively and balancedly support the weight of rotor 3. Furthermore, when rotor 3 outputs force, it is more balanced and less prone to shaking, capable of outputting stronger radial force.

[0149] In this patent, the conventional design is no longer used, but the design of a vertical rotor 3 is adopted. This design will cause the weight of the heavier rotor 3 to be applied in the axial direction of the rotor 3.

[0150] Generally, the length of the rotor 3 is greater than its diameter, especially for the permanent magnet rotor 3. Therefore, from a mechanical perspective, the design of this patent will weaken the rotor 3's load-bearing strength and stability compared to conventional designs. Furthermore, the output stability of the rotor 3's radial force is also reduced.

[0151] The inventors of the utility model have discovered that when placed vertically, the frictional force of a permanent magnet motor, particularly a permanent magnet brushless motor, during rotation comes primarily from pressure on the bearings. This pressure is composed of two components: gravity and the external forces acting or reacting upon the motor's output.

[0152] Conventional magnetic levitation motors, air levitation motors, and oil levitation motors all use electromagnetic force, high-pressure air film, and high-pressure oil film to suspend the built-in rotor 3 as horizontally as possible when the motor is placed horizontally.

[0153] Although this design reduces the unit area of ​​the rotor 3, it increases the force-bearing surface. A large force-bearing surface is more difficult to balance.

[0154] The design of this patent has many shortcomings in conventional motor application environments, but it has significant technical effects in specific application scenarios.

[0155] The design of this patent has outstanding technical effects and substantial technological progress in working scenarios where the axial thrust or suction is large and the radial force is relatively balanced.

[0156] In an environment with large axial thrust, the design of conventional motors or generators will increase the bearing force due to the compression of the thrust, resulting in greater rotational resistance.

[0157] In particular, in a high-speed, high-power motor or generator, this thrust is much greater than the weight of the rotor 3. According to conventional designs, there will be disadvantages in this special operating environment.

[0158] The design of this patent can operate with low friction or even no friction under such working conditions.

[0159] A double-locking magnetic suspension support 5 is provided between the rotor shaft 4 and the motor housing 1 for generating a force to push the rotor 3 away from the support bearing;

[0160] The thrust generated by the double-locking magnetic suspension support 5 is greater than three-fifths of the weight of the rotor 3 .

[0161] This patent not only takes into account the adverse factors in special operating environments, but also partially or completely overcomes the combined force of gravity and thrust through the magnetic field, thereby greatly reducing friction, reducing energy consumption, and improving efficiency; reducing wear, reducing failure rate, reducing noise, and increasing service life.

[0162] Furthermore, the thrust generated by the double-locked magnetic suspension support 5 is less than or equal to the resultant force of the weight of the rotor 3 and the force generated during operation; and greater than four-fifths of the resultant force of the weight of the rotor 3 and the force generated during operation.

[0163] The thrust generated by the double-locked magnetic suspension support 5 does not completely push the rotor 3 away. This design is preferably used when the support bearing is a mechanical bearing to avoid generating reverse pressure on the support bearing, which would otherwise generate additional friction.

[0164] Furthermore, the rotor 3 is linked to a working component 6 that generates a downward force to rotate;

[0165] The thrust generated by the double-locking magnetic suspension support 5 is greater than the weight of the rotor 3, but less than or equal to the resultant force of the weight of the rotor 3 and the force generated during operation.

[0166] The force generated by the rotor 3 during operation can be a downward thrust or an upward pull.

[0167] When the working component 6 rotates, it generates a downward thrust, and the resulting force causes the rotor 3 to move downward, thereby reducing some of the pressure on the support bearing or even completely eliminating the pressure.

[0168] A fluid driving component is mounted on the rotor shaft 4 of the rotor 3 , which serves as a working component 6 and allows fluid to flow into the rotor from the side and push the fluid out axially.

[0169] Alternatively, a fluid driving component is mounted on the rotor shaft 4 of the rotor 3 , which allows the fluid to flow in axially and pushes the fluid out laterally, serving as the working component 6 .

[0170] By concentrating the working force on the axial direction of the rotor 3, the force on the side of the rotor 3 is balanced as much as possible, reducing or even avoiding the generation of lateral pressure, thereby reducing friction, allowing for extremely high speeds and reducing noise.

[0171] An upward pulling force may also be generated in other driving modes, such as when the fluid impacts the working member 6 upward from below to cause it to perform work, or when pushing the fluid downward.

[0172] The working component 6 can be an axial fluid driving component, specifically an axial airflow or fluid driving component in a propeller, a turbine, or a scroll. Other forms of axial airflow or fluid driving components can also be used.

[0173] When the motor is an electric motor, the working component 6 can be a propeller, a turbine, a vortex disk, or other working components that drive the fluid to flow 6. When the working component 6 pushes the fluid to move upward, it will generate a downward reaction force.

[0174] In the prior art, a scroll can be used in a scroll compressor as a fluid driving component.

[0175] When the motor is a generator, the working component 6 can be a scroll, a propeller, a turbine, or other working component 6 driven by the fluid flow. When the working component 6 is impacted downward by the fluid, a downward force may be generated.

[0176] It also includes a flow guide device, and the working component 6 is sleeved in the flow guide device;

[0177] The flow guide device is provided with two openings, one for air inlet and the other for air outlet;

[0178] One of the openings is a vertically upward opening, which is located above the working component 6 .

[0179] Furthermore, it is preferred that an upward-facing flow guide tube 7 with a height of at least 20 cm is provided at the opening.

[0180] The calculation of height can be started from the upper edge of working part 6. The flow conduit 7 is directed upward within 20cm height. After exceeding at least 20cm height, the direction of flow conduit 7 is allowed to change.

[0181] By providing the high-height air guide 7, whether air is sucked in from above or discharged from above, a relatively stable flow can be maintained when the air flow is close to the working component 6, thus avoiding uneven forces on each side of the working component 6.

[0182] A mixing flow mechanism can be provided in front of the air inlet and the air outlet to mix the inlet and the outlet airflow, thereby evenly distributing the pressure on each side.

[0183] The flow mixing mechanism may be a spiral tube, a propeller or other mechanisms that can mix the airflow evenly.

[0184] The working component 6 may also be subjected to radial forces or forces in mixed directions, such as a wind turbine impeller.

[0185] Specific embodiment of setting permanent magnetic bearing on rotor shaft 4:

[0186] A permanent magnetic bearing is also provided, which includes an outer magnetic ring a2 and an inner magnetic ring a1 nested in the outer magnetic ring a2 and having magnetic repulsions therefrom; a gap is provided between the outer magnetic ring a2 and the inner magnetic ring a1;

[0187] The outer magnetic ring a2 is fixed on one of the stator 2 and the motor housing 1 , and the inner magnetic ring a1 is arranged on the rotor shaft 4 .

[0188] By providing a permanent magnetic bearing, the rotor shaft 4 can be stabilized and can achieve contactless and frictionless rotation with the stator 2 .

[0189] Permanent magnetic bearings may be provided at two positions, one on the upper side and the other on the lower side of the rotor shaft 4 .

[0190] Two permanent magnetic bearings provide high stability and limit vibration.

[0191] Alternatively, a permanent magnetic bearing may be provided on the upper portion of the rotor shaft 4 and another permanent magnetic bearing may be provided at the support bearing.

[0192] It is even possible to integrate the support bearing and the permanent magnetic bearing into a single structure.

[0193] Specific embodiment 1 of the support bearing structure:

[0194] Furthermore, the thrust generated by the double-locked magnetic suspension support 5 is equal to the combined force of the weight of the rotor 3 and the force generated during operation;

[0195] The support bearing is a magnetic support bearing b; the magnetic support bearing b includes two repelling magnets, one magnet is located at the bottom, and the other magnet is located above the magnet and is a permanent magnet fixed on the rotor shaft 4.

[0196] The two repelling magnets are separated by repulsion, thereby reducing or even eliminating friction.

[0197] The magnetic support bearing B has a mechanical self-balancing function within a set range. This allows the double-locked magnetic suspension support 5 to automatically adjust to a state where the thrust and the resultant force are equal within a certain range. This allows for a completely frictionless operation, allowing for extremely high-speed operation.

[0198] The supporting bearing is a magnetic supporting bearing b, which can be a permanent magnetic bearing or an electromagnetic bearing.

[0199] It should be noted that the magnetic support bearing b is not only provided with these two magnets, but also may be provided with other auxiliary structures.

[0200] Furthermore, the magnetic support bearing b further comprises a sliding sleeve b1, the sliding sleeve b1 being fixed on the motor housing 1, and the magnet at the bottom being arranged below the sliding sleeve b1;

[0201] The permanent magnet fixed on the rotor shaft 4 is sleeved in the sliding sleeve b1 to form an up and down sliding connection.

[0202] Furthermore, the magnetic support bearing b has two repelling magnets, one of which is an electromagnet located at the bottom and the other is a permanent magnet located above the electromagnet and fixed on the rotor shaft 4;

[0203] The electromagnet is further connected to a magnetic force control circuit, and the magnetic force control circuit is further connected to a magnetic force sensor for detecting the magnetic force of the permanent magnet.

[0204] The magnetic sensor may be arranged at a position above the height of the permanent magnet on the rotor shaft 4 .

[0205] When the permanent magnet moves upward and approaches the magnetic sensor beyond the amplitude, the magnetic sensor sensing signal is enhanced, and the magnetic force of the electromagnet is reduced through the magnetic control circuit, thereby shortening the distance the permanent magnet is pushed away, and causing the rotor shaft 4 to return downward.

[0206] When the permanent magnet moves downward and away from the magnetic sensor beyond the amplitude, the magnetic sensor sensing signal weakens, and the magnetic force of the electromagnet is enhanced through the magnetic control circuit, thereby increasing the distance the permanent magnet is pushed away, and the rotor shaft 4 returns upward.

[0207] Furthermore, by dynamically adjusting the magnetic control circuit and controlling the rotor shaft 4, the height position of the rotor 3 in the stator 2 can be relatively fixed, or even kept suspended for a long time, so that the entire motor is in an ideal operating state.

[0208] In this patent, the magnetic sensor is placed above the permanent magnet, rather than below it, effectively avoiding the influence of the magnetic field of the electromagnet below. This improves control accuracy. The magnetic sensor can be a Hall effect sensor.

[0209] As for the magnetic force control circuit, it can be implemented using a multi-stage amplifier integrated circuit and auxiliary circuits. It only needs to set the amplification ratio according to the position of the magnetic sensor and select the amplification logic relationship.

[0210] The magnetic force control circuit can be composed of CD4069 multi-stage amplifier integrated circuit, plus auxiliary components such as resistors, capacitors, power amplifiers, etc. The Hall sensor can be OH137 or 44E.

[0211] The difficulty of implementing the magnetic control circuit is greatly reduced compared to the high-frequency suspension control circuit system of the magnetic levitation motor, and the possibility of loss of control is smaller and the stability is higher.

[0212] A limiting mechanism for limiting the sliding range may be provided between the rotor shaft 4 and the support bearing.

[0213] Specific embodiment 2 of the support bearing structure:

[0214] Furthermore, the thrust generated by the double-locked magnetic suspension support 5 is equal to the combined force of the weight of the rotor 3 and the force generated during operation;

[0215] The supporting bearing adopts a rotary bearing with a sliding structure;

[0216] The rotating bearing includes an outer ring, a rolling element, and an inner ring;

[0217] The outer ring is directly or indirectly fixedly connected to the motor housing 1 , and the inner ring is connected to the rotor shaft 4 in an up-and-down sliding manner.

[0218] In the above design, a support bearing that allows for up and down sliding is provided. By allowing the rotor shaft 4 to slide up and down relative to the support bearing, the double-locked magnetic suspension support 5 is allowed to automatically adjust to a state where the thrust and the resultant force are equal within a certain range.

[0219] This allows for an almost complete absence of mechanical friction, allowing for extremely high speeds.

[0220] Moreover, compared with the design scheme using magnetic support bearing b, it has the characteristics of low cost, simple production process, high radial stability, and allows relatively high radial force output.

[0221] However, it should be noted that this design does not completely eliminate mechanical friction. The no-load running speed is slightly lower than that of the solution using magnetic support bearings b.

[0222] An up-and-down sliding structure is adopted between the rotor shaft 4 and the inner ring to limit the rotation speed difference.

[0223] By limiting the speed difference, sliding between the rotor shaft 4 and the inner ring in the rotational direction is avoided, thereby avoiding problems such as wear, heat, and noise caused by relative sliding friction.

[0224] The up and down sliding structure that limits the speed difference can be that the connection between the rotor shaft 4 and the inner ring adopts a columnar structure with a non-circular cross-section, and the inner side of the inner ring adopts a structure that allows the columnar structure to be inserted and slides, but limits the relative rotation range.

[0225] For example, the cross section of the rotor shaft 4 may be elliptical, and the inner side of the inner ring may also be elliptical; the cross section may be triangular, and the inner side of the inner ring may also be triangular; the cross section may be quadrilateral, and the inner side of the inner ring may also be quadrilateral.

[0226] Preferably, the cross section of the rotor shaft 4 is elliptical, and the inner side of the inner ring is also elliptical.

[0227] Avoid the problem of excessive bearing capacity at sharp corners, avoid wear and tear, ensure long-term smoothness, and increase service life.

[0228] A limiting mechanism for limiting the sliding range is provided between the rotor shaft 4 and the support bearing.

[0229] Avoid the problem that the rotor shaft 4, under the action of the force generated during operation and the thrust generated by the magnetic field, or other forces, has an excessive relative movement with the stator 2, thereby affecting the operation of the equipment.

[0230] A limiting mechanism for limiting the sliding range is provided between the rotor shaft 4 and the inner ring of the support bearing, and an elastic mechanism is provided between the rotor shaft 4 and the support bearing.

[0231] The elastic mechanism provides flexible stroke compensation for the forces generated during operation, the thrust generated by the magnetic field, or other forces. This prevents significant displacement of the rotor shaft 4 due to force fluctuations. Furthermore, it prevents collisions between the rotor shaft 4 and the support bearings caused by force fluctuations, ensuring smooth operation of the equipment and the safety of the support bearings.

[0232] The limiting mechanism includes a stopper provided on the rotor shaft 4. The stopper prevents the rotor shaft 4 from excessively sliding through the inner ring.

[0233] An elastic mechanism is further provided between the rotor shaft 4 and the inner ring. One end of the elastic mechanism is fixedly connected to one of the rotor shaft 4 and the inner ring; the other end is allowed to be in a non-contact state with the other in a working state.

[0234] When not in contact with one another, pressure on the inner ring can be avoided.

[0235] For example, the elastic mechanism adopts a spring structure, which can be a spring structure with one end fixed on the rotor shaft 4; the other end is provided with a ring that is sleeved on the rotor shaft 4 and allows sliding, and the ring is a structure that limits the passage through the inner ring.

[0236] Arranging the spring structure on the rotor shaft 4 instead of the inner ring can avoid friction caused by relative shaking between the rotor shaft 4 and the inner ring.

[0237] The spring structure is placed on the rotor shaft 4, and a collar is used to limit the shaking of the other end, so that the spring structure is relatively stable during high-speed rotation.

[0238] Yes, the inner ring can be used as the limiting component of the limiting mechanism.

[0239] Because the collar is a structure that restricts the passage through the inner ring, when the rotor shaft 4 moves more, the collar presses against the inner ring, generating a reaction force to achieve flexible position limiting. If the rotor shaft 4 moves too much, the elasticity continues to increase, achieving further position limiting.

[0240] Furthermore, the elastic mechanism may also be an elastic mechanism composed of two repelling magnets; one of the two repelling magnets is fixed on the rotor shaft 4, and the other is fixed on the inner ring.

[0241] When the rotor shaft 4 moves more, the two repelling magnets increase the reaction force to achieve flexible limiting. Preferably, a limiting component, such as a limiting stop, is additionally provided on the rotor shaft 4 to prevent the magnets from colliding.

[0242] This elastic mechanism composed of two repelling magnets can prevent the spring from shaking under high-speed rotation, and avoid wear and noise caused by the vibration between the rotor shaft 4 and the inner ring due to high-speed rotation.

[0243] In addition, it is also allowed to be applied when the rotor 3 is subjected to an upward force (such as a pulling force) from the working part 6. When subjected to a pulling force, some reverse settings can be performed according to the above description of this patent.

[0244] Reference Figures 1 to 7 , a double-locking magnetic levitation support 5 includes a support device 10; a magnet mechanism is provided on the support device 10, called a fixed magnet mechanism 8; it also includes a rotating mechanism 11 that rotates relative to the support device 10, and a magnet mechanism that repels the fixed magnet mechanism 8 is provided on the rotating mechanism 11, called a floating magnet mechanism 9; the floating magnet mechanism 9 and the fixed magnet mechanism 8 are both arranged around the rotation axis of the rotating mechanism 11; two of the floating magnet mechanism 9 and the fixed magnet mechanism 8 are provided, and the two mechanisms are arranged in a two-layer structure, and at least part of the magnet of the other mechanism is sandwiched between the two layers of structure; the two mechanisms of the two-layer structure have a magnetic force that repels the other mechanism sandwiched therebetween.

[0245] Because the two mechanisms of the two-layer structure each exert a magnetic repulsive force on the other mechanism sandwiched between them, the other mechanism has a mechanical tendency to stabilize in the middle of the two mechanisms of the two-layer structure. In this coordinate direction, it has a tendency to levitate.

[0246] “At least part of the magnets of another mechanism are sandwiched between the two structures” is not limited to being entirely located between the two side structures, but rather means that at least part of the magnets of another mechanism are sandwiched between the two structures.

[0247] In the above design, rather than simply using a magnetic field to eliminate the gravity or reaction force of the floating magnet mechanism 9 and its connected components during operation, a two-layer structure is provided to provide forces in two directions. According to conventional design principles, one of the two layers would act as a counterforce, which would be detrimental to enhancing the overall magnetic strength. However, the inventors of the present invention have taken the opposite approach, overcoming technical prejudices and achieving the technical effect of precise positioning.

[0248] Each mechanism in the two-layer structure produces a repulsive magnetic force against the other, allowing both mechanisms to move closer together simultaneously. This results in large fluctuations in the magnetic field within a relatively small distance range, facilitating precise limit correction via the magnetic field. Even small distance offsets generate a powerful magnetic field correction force, resulting in greater sensitivity to displacement correction, higher precision, faster response, and greater resilience. This design minimizes oscillation and accelerates correction. Mechanical applications offer advantages such as stable operation, low noise, and high load capacity.

[0249] The two mechanisms of the two-layer structure are respectively close to two surfaces of the other mechanism, and the distance between them is greater than 0.2 mm and less than 3 mm.

[0250] The range of greater than 0.2mm and less than 3mm is where the magnetic field intensity varies more due to distance. This also makes it easier to machine other auxiliary components and avoid friction caused by slight shaking.

[0251] In the two mechanisms of the two-layer structure and the other mechanism, one mechanism includes two permanent magnet rings; a gap is set between the two permanent magnet rings,

[0252] The magnet in the other relatively rotating mechanism and the two permanent magnet rings repel each other, and the lowest point of the resultant force of the two repulsive forces is located between the two permanent magnet rings.

[0253] Through this design, the positions of the two-layer structure and another mechanism in another coordinate direction are relatively fixed, further improving the stability of the system.

[0254] The permanent magnet ring can be a one-piece ring or a ring made of spliced ​​permanent magnets.

[0255] Two designs using two permanent magnet rings:

[0256] (1) Both layers of the structure use two permanent magnet rings.

[0257] Reference Figures 1 to 7, two mechanisms of a two-layer structure, each mechanism includes two permanent magnet rings; a gap is set between the two permanent magnet rings, the magnet in the other mechanism and the two permanent magnet rings are repelling each other, and the low point of the resultant force of the two repulsive forces is located between the two permanent magnet rings.

[0258] Through this design, the positions of the two-layer structure and another mechanism in another coordinate direction are relatively fixed, further improving the stability of the system.

[0259] Reference Figure 7 The lower structure of the fixed magnet mechanism 8 includes two permanent magnet rings, one is a large magnetic ring c1 and the other is a small magnetic ring c2, which are coaxially nested; and the inner diameter of the large magnetic ring c1 is larger than the outer diameter of the small magnetic ring c2, and there is a gap; the floating magnet mechanism 9 is located above the gap; the floating magnet mechanism 9 and the two permanent magnet rings repel each other.

[0260] Figure 7 The shaded area in the figure is used to distinguish magnetic poles. For example, the upper portion of the larger permanent magnet ring C1 is shaded, indicating that the polarity of the upper portion is different from that of the lower portion. The outer portion of the floating magnet mechanism 9 is shaded, indicating that the polarity of the outer portion is different from that of the inner portion. This indicates that the polarity of the outer portion of the floating magnet mechanism 9 is the same as that of the upper portion of the larger permanent magnet ring C1, and the magnetic force relationship is repulsive.

[0261] (2) Another mechanism uses two permanent magnet rings.

[0262] Alternatively, another mechanism includes two permanent magnet rings; a gap is provided between the two permanent magnet rings, the magnets in the two mechanisms of the two-layer structure and the two permanent magnet rings are repelled, and the lowest point of the resultant force of the two repulsive forces is located between the two permanent magnet rings.

[0263] Through this design, the positions of the two-layer structure and another mechanism in another coordinate direction are relatively fixed, further improving the stability of the system.

[0264] Solutions to enhance the magnetic field strength of two permanent magnet rings:

[0265] (1) The magnetic field is enhanced by the magnetic conductive mechanism d.

[0266] Furthermore, the two permanent magnet rings have different magnetic pole orientations, and rotate relative to the magnets in another mechanism;

[0267] The two magnetic poles of the magnet in the other relatively rotating mechanism are respectively facing the two permanent magnet rings and are in a repulsive state;

[0268] A magnetic conductive mechanism d is provided on the side of the two permanent magnet rings facing away from the magnet in the other mechanism that rotates relatively. The magnetic conductive mechanism d connects the magnetic fields of the two permanent magnets.

[0269] The magnetic field on the back side of the two permanent magnet rings is conducted, thereby enhancing the magnetic field strength in the front.

[0270] (2) The magnetic field is enhanced by auxiliary permanent magnets c.

[0271] An annular auxiliary permanent magnet c is arranged between the two permanent magnet rings;

[0272] The auxiliary permanent magnet c is arranged in such a manner that its two magnetic poles attract the magnetic poles on one side of the magnet in the other mechanism that rotates relative to the two permanent magnet rings.

[0273] The auxiliary permanent magnet c increases the magnetic flux on the back side of the two permanent magnet rings, thereby enhancing the magnetic field strength in the front.

[0274] Two layout schemes for two-layer structures:

[0275] (1) Arranged front and back along the axis:

[0276] The two mechanisms of the two-layer structure are arranged in front and back along the axial direction, and the other mechanism is set between the two layers. The other mechanism is set between the two layers, which is a hierarchical position relationship.

[0277] The two-layer structure allows for magnetic rings with the same radius to be arranged front to back.

[0278] (2) Inner and outer layers are stacked:

[0279] The two-layer structure adopts an inner and outer layer stacked structure, and another mechanism is set in the position between the two layers. The other mechanism is set in the position between the two layers, which is a hierarchical position relationship.

[0280] The two-layer structure allows for magnetic rings with one radius larger than the other and one radius smaller, arranged in layers.

[0281] Solution for independently setting up electromagnets in fixed magnet mechanisms:

[0282] The fixed magnet mechanism 8 adopts an independent electromagnet, or an electromagnet is added on the basis of the permanent magnet. The specific technical solution is as follows.

[0283] The electromagnet is connected to an electromagnetic drive circuit for driving and controlling the electromagnet, and a sensor for detecting the position of the floating magnet mechanism 9 is also connected to the signal input end of the electromagnetic drive circuit.

[0284] In the above design, the position change or angle change of the floating magnet mechanism 9 will cause the signal output of the sensor (a Hall sensor can be used) to change, and then the electromagnetic drive circuit will respond, realize the control change of the electromagnet, generate a magnetic field change, and then generate a force change on the floating magnet mechanism 9 through the magnetic field change, so that the floating magnet mechanism 9 is corrected to the correct position.

[0285] In the above design, the fixed magnet mechanism 8 is configured as a magnetically controllable system driven and controlled by an electromagnetic drive circuit. This allows the force acting on the rotor shaft 4 to be adjusted by controlling the magnetic force. This allows for adjustment of the height and even the tilt of the rotor shaft 4. This provides timely feedback to respond to varying forces acting on the rotor 3. Timely adjustments ensure optimal dynamic operation.

[0286] As for the electromagnetic drive circuit, it can be realized by using a multi-stage amplifier integrated circuit and auxiliary circuit. It only needs to set the amplification ratio and select the amplification logic relationship according to the position of the sensor.

[0287] The electromagnetic drive circuit can be composed of CD4069 multi-stage amplifier integrated circuit, plus auxiliary components such as resistors, capacitors, power amplifiers, etc. The Hall sensor can be OH137 or 44E.

[0288] The electromagnets controlled by the electromagnetic drive circuit are allowed to be arranged on one plane, and only three of them are allowed to be arranged in number.

[0289] Furthermore, the fixed magnet mechanism 8 preferably adopts a combined structure of a permanent magnet and an electromagnet.

[0290] The main magnetic support is achieved through permanent magnets, and the output control of smaller correction forces is achieved through electromagnets.

[0291] In this way, the current for maintaining the magnetic field can be reduced, and even after a power outage occurs, the rotor 3 will not impact the stator 2 or other components.

[0292] In addition, because only electromagnets are used for correction, the electromagnet current is allowed to be small, which provides a favorable basis for high-speed adjustment and rapid response of the magnetic field.

[0293] Specific embodiment 1: structure using a two-layer floating magnet mechanism

[0294] A structure of two layers of floating magnet mechanisms 9 is adopted, and at least part of the magnets of the fixed magnet mechanism 8 are sandwiched between the two layers of floating magnet mechanisms 9;

[0295] The two layers of floating magnet mechanisms 9 both generate a repulsive magnetic force on the fixed magnet mechanism 8 sandwiched therebetween.

[0296] One design is:

[0297] Reference Figure 3 The two layers of floating magnet mechanisms 9 are arranged front to back along the axial direction, and the fixed magnet mechanism 8 is arranged between the two layers of floating magnet mechanisms 9.

[0298] The two-layer floating magnet mechanism 9 is allowed to be a magnetic ring with the same radius and arranged front to back.

[0299] Another design is:

[0300] Reference Figure 6 The two-layer floating magnet mechanism 9 adopts a structure in which the inner and outer layers are stacked, and the fixed magnet mechanism 8 is arranged between the two-layer floating magnet mechanism 9.

[0301] The two-layer floating magnet mechanism 9 allows for magnetic rings with a larger radius and a smaller radius to be stacked.

[0302] Specific embodiment 2: using a structure with two layers of fixed magnet mechanism

[0303] Reference Figure 2 、 7 , adopting a structure of two layers of fixed magnet mechanisms 8, with the floating magnet mechanism 9 sandwiched between the two layers of fixed magnet mechanisms 8;

[0304] The two layers of fixed magnet mechanisms 8 both generate repulsive magnetic forces on the floating magnet mechanism 9 sandwiched therebetween.

[0305] This design helps to reduce the weight of the floating magnet mechanism 9 and reduce the centrifugal force caused during the rotation process.

[0306] One design is:

[0307] Reference Figure 2 、 7 The two layers of fixed magnet mechanisms 8 are arranged front to back along the axial direction, and the floating magnet mechanism 9 is arranged between the two layers of fixed magnet mechanisms 8.

[0308] The two layers of fixed magnet mechanisms 8 may be magnetic rings with the same radius and arranged front to back.

[0309] Another design is:

[0310] Reference Figure 4 The two-layer fixed magnet mechanism 8 adopts an inner and outer layer stacked structure, and the floating magnet mechanism 9 is arranged between the two-layer fixed magnet mechanism 8.

[0311] The two-layer fixed magnet mechanism 8 may be a magnetic ring body with a larger radius and a smaller radius, which is stacked.

[0312] The above shows and describes the basic principles and main features of the utility model, as well as the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the utility model. Various changes and improvements may be made to the utility model without departing from the spirit and scope of the utility model. Such changes and improvements are within the scope of the utility model claimed. The scope of protection claimed for the utility model is defined by the appended claims and their equivalents.

Claims

1. A locked magnetic levitation motor, comprising a motor system, the motor system comprising a motor housing, a stator, and a rotor, characterized in that: The motor system is provided with a double-locking magnetic suspension support; The double-locking magnetic suspension support includes a support device; The supporting device is provided with a magnet mechanism, which is called a fixed magnet mechanism; It also includes a rotating mechanism that rotates relative to the supporting device, and the rotating mechanism is provided with a magnetic mechanism that repels the fixed magnetic mechanism, which is called a floating magnetic mechanism; The floating magnet mechanism and the fixed magnet mechanism are both arranged around the rotation axis of the rotating mechanism; Two of the floating magnet mechanism and the fixed magnet mechanism are provided, and the two mechanisms are arranged in a two-layer structure, and at least part of the magnet of the other mechanism is sandwiched between the two layers; The two mechanisms of the two-layer structure both generate a repulsive magnetic force on the other mechanism sandwiched between them; The support device and rotating mechanism of the double-locking magnetic suspension support adopt the following structure of the motor system, the support device adopts at least one of the motor housing and the stator, and the rotating mechanism adopts the rotor.

2. The locked magnetic levitation motor according to claim 1, characterized in that: The stator is arranged in the motor housing; The rotor is placed vertically, and is provided with a rotor shaft, which is in a vertical working state; A support bearing for supporting the weight of the rotor is directly or indirectly provided between the rotor and the motor housing; a base for fixing the motor in a vertical position is provided below the motor housing; A double-locking magnetic suspension support is provided between the rotor shaft and the motor housing for generating a force to push the rotor away from the support bearing; The thrust generated by the double-locked magnetic levitation support is greater than three-fifths of the rotor's gravity.

3. The locked magnetic levitation motor according to claim 1, characterized in that: The rotor is linked to a working part that produces a downward force and rotates; The thrust generated by the double-locked magnetic levitation support is greater than the weight of the rotor, but less than or equal to the resultant force of the weight of the rotor and the force generated during operation.

4. The locked magnetic levitation motor according to claim 1, characterized in that: It also includes a flow guide device, and the working component is sleeved in the flow guide device; The flow guide device is provided with two openings, one for air inlet and the other for air outlet; One type of opening is a vertically upward opening, and the vertically upward opening is located above the working part; An upward-facing flow guide tube at least 20 cm high is provided at the opening.

5. The locked magnetic levitation motor according to claim 4, characterized in that: A mixing mechanism is provided in front of the air inlet and outlet to mix the inlet and outlet air flows and evenly distribute the pressure on each side. The flow mixing mechanism is a spiral tube, a propeller or at least one other mechanism that can mix the airflow evenly.

6. The locked magnetic levitation motor according to claim 1, characterized in that: A permanent magnetic bearing is also provided, which includes an outer magnetic ring and an inner magnetic ring nested in the outer magnetic ring and having magnetic repulsion; a gap is provided between the outer magnetic ring and the inner magnetic ring; The outer magnetic ring is fixed on one of the stator and the motor housing, and the inner magnetic ring is arranged on the rotor shaft.

7. The locked magnetic levitation motor according to claim 2, characterized in that: The support bearing is a magnetic support bearing; the magnetic support bearing includes two repelling magnets, one magnet is located at the bottom, and the other magnet is located above the magnet and is a permanent magnet fixed on the rotor shaft; A permanent magnetic bearing is arranged on the upper part of the rotor shaft, and another permanent magnetic bearing is arranged at the support bearing; The magnetic support bearing further comprises a sliding sleeve body, the sliding sleeve body being fixed on the motor housing, and the magnet at the bottom being arranged below the sliding sleeve body; The permanent magnet fixed on the rotor shaft is sleeved in the sliding sleeve to form an up and down sliding connection.

8. The locked magnetic levitation motor according to claim 2, characterized in that: The magnetic support bearing further comprises a sliding sleeve body, the sliding sleeve body being fixed on the motor housing, and the magnet at the bottom being arranged below the sliding sleeve body; The permanent magnet fixed on the rotor shaft is sleeved in the sliding sleeve to form an up and down sliding connection; Two repelling magnets of the magnetic support bearing, one magnet is an electromagnet located at the bottom, and the other magnet is a permanent magnet located above the electromagnet and fixed to the rotor shaft; The electromagnet is further connected to a magnetic force control circuit, and the magnetic force control circuit is further connected to a magnetic force sensor for detecting the magnetic force of the permanent magnet.

9. The locked magnetic levitation motor according to any one of claims 2, 7 and 8, characterized in that: The supporting bearing adopts a rotary bearing with a sliding structure; The rotating bearing includes an outer ring, a rolling element, and an inner ring; The outer ring is directly or indirectly fixedly connected to the motor housing, and the inner ring is connected to the rotor shaft in an upward and downward sliding manner; A limiting mechanism for limiting the sliding amplitude is provided between the rotor shaft and the inner ring of the support bearing, and an elastic mechanism is provided between the rotor shaft and the support bearing.

10. The locked magnetic levitation motor according to claim 1, characterized in that: The double-locking magnetic suspension support adopts a structure of two layers of floating magnet mechanisms, and at least part of the magnets of the fixed magnet mechanism are sandwiched between the two layers of floating magnet mechanisms; The two layers of floating magnet mechanisms both generate a repulsive magnetic force on the fixed magnet mechanism sandwiched therebetween. The two layers of floating magnet mechanisms adopt a structure of inner and outer layers stacked, with the fixed magnet mechanism being arranged between the two layers of floating magnet mechanisms.

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