Permanent magnet assisted reluctance synchronous motor rotor

Abstract

The utility model provides a kind of motor rotor of permanent magnet auxiliary reluctance synchronization belongs to motor rotor technical field, including rotor core, the shaft hole for connecting rotating shaft is opened in rotor core, multiple permanent magnets are equipped on rotor core, multiple magnetic barriers are equipped on rotor core, both ends of rotor core are equipped with end plate, multiple permanent magnets and multiple magnetic barriers are equipped with magnetic separation strip between, multiple damping grooves are opened in rotor core outer wall, multiple damping grooves are equipped with damping block, multiple end plates are equipped with balance block, multiple damping blocks are equipped with heat dissipation plate between, both sides of rotor core are equipped with magnetic conducting ring, both ends of rotor core and end plate outer wall junction are equipped with sealing pad.The device is by setting magnetic separation strip between permanent magnet and magnetic barrier, so that user can prevent the magnetic flux leakage between permanent magnet and magnetic barrier;After motor operation, the distribution of internal magnetic field of motor can be optimized by the effect of magnetic separation strip, so that user can obtain more stable motor operating condition.

Description

Technical Field

[0001] This utility model belongs to the field of motor rotor technology, and more specifically, it relates to a permanent magnet assisted reluctance synchronous motor rotor. Background Technology

[0002] In the field of motor manufacturing, permanent magnet assisted reluctance synchronous motor rotors are often used to convert electrical energy into mechanical energy.

[0003] In various industrial production, transportation, and household appliance applications, engineers often use permanent magnet assisted reluctance synchronous motors to achieve higher motor efficiency, power density, and operational stability. However, traditional devices lack magnetic circuit optimization and protection functions, resulting in uneven magnetic field distribution during motor operation due to poor control of magnetic flux leakage between the permanent magnet and the magnetic barrier.

[0004] However, an uneven magnetic field, under complex operating conditions such as high-speed motor operation, can easily lead to increased torque pulsation in the motor, causing vibration. This not only affects the smoothness of motor operation and reduces the working accuracy of related equipment, but also increases mechanical wear due to vibration, thus shortening the motor's service life. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides a permanent magnet assisted reluctance synchronous motor rotor, thereby resolving the technical issue that traditional devices in the prior art lack magnetic circuit optimization and protection functions.

[0006] The purpose and effect of this utility model of a permanent magnet assisted reluctance synchronous motor rotor are achieved by the following specific technical means:

[0007] A permanent magnet assisted reluctance synchronous motor rotor includes a rotor core with a shaft hole for connecting a rotating shaft. The rotor core has multiple sets of permanent magnets and multiple sets of magnetic barriers. End plates are provided at both ends of the rotor core. Magnetic isolation strips are provided between the sets of permanent magnets and the sets of magnetic barriers. Multiple damping grooves are formed on the outer wall of the rotor core, and damping blocks are provided within each set of damping grooves. Balance blocks are provided on each set of end plates. Heat dissipation plates are provided between the sets of damping blocks. Magnetic guide rings are provided on both sides of the rotor core. Sealing gaskets are provided at the connection points between both ends of the rotor core and the outer walls of the end plates.

[0008] According to a preferred embodiment, the rotor core has multiple sets of first mounting slots and multiple sets of second mounting slots, multiple sets of permanent magnets are located in the multiple sets of first mounting slots, the multiple sets of permanent magnets are rectangular in shape, the magnetization direction of the multiple sets of permanent magnets is consistent with the direction of the rotor core, and the length of the multiple sets of permanent magnets is equal to the length of the rotor core.

[0009] According to a preferred embodiment, multiple sets of magnetic barriers are located within multiple sets of second mounting slots, the multiple sets of magnetic barriers are radially arranged, the multiple sets of permanent magnets and the multiple sets of magnetic barriers are equidistantly distributed along the circular surface of the rotor core, and the length of the multiple sets of magnetic barriers is equal to the length of the permanent magnets.

[0010] According to a preferred embodiment, multiple sets of end plates are connected to the rotor core by bolts, multiple sets of magnetic guide rings are located on multiple sets of end plates, multiple sets of magnetic shielding strips are made of non-magnetic material, and the length of multiple sets of magnetic shielding strips is one-third of the length of the rotor core.

[0011] According to a preferred embodiment, the multiple sets of damping blocks are made of copper alloy, and the multiple sets of damping blocks are clamped on the outer wall of the rotor core, and the multiple sets of damping blocks are arranged at equal intervals along the outer wall of the rotor core.

[0012] According to a preferred embodiment, the heat sink is evenly distributed along the outer wall of the rotor core, and the length of the plurality of heat sinks is two-thirds of the length of the rotor core.

[0013] According to a preferred embodiment, multiple sets of first mounting slots and multiple sets of second mounting slots are respectively provided on the multiple sets of first mounting slots and multiple sets of second mounting slots. Protective plates are respectively attached to the permanent magnet and the magnetic barrier at one end.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting a magnetic isolation strip between the permanent magnet and the magnetic barrier, the device can prevent magnetic flux leakage between the permanent magnet and the magnetic barrier, thereby improving the magnetic performance utilization efficiency of the device. After the motor is running, the user can optimize the magnetic field distribution inside the motor through the action of the magnetic isolation strip, so that the user can obtain a more stable motor operation.

[0016] 2. When using this device, the user can suppress the oscillation generated during motor operation by setting a damping groove with damping blocks on the outer wall of the rotor core, thereby reducing the vibration during motor operation and improving the stability of the device. Then, through the heat dissipation plates evenly distributed along the outer wall of the rotor core, the device can dissipate the heat generated during generator operation in a timely manner, reduce the motor temperature, and improve the device's heat dissipation and long-term stable operation capabilities. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0018] Figure 2This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the endless plate of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 11. Rotor core; 12. Permanent magnet; 13. Magnetic barrier; 14. End plate; 15. Magnetic shielding strip; 16. Damping block; 17. Balance block; 18. Heat sink; 19. Magnetic ring; 21. Sealing gasket; 22. Protective plate. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0024] Example:

[0025] like Figures 1 to 2 As shown, this utility model provides a permanent magnet assisted reluctance synchronous motor rotor, including a rotor core 11, a shaft hole for connecting the rotor shaft on the rotor core 11, multiple sets of permanent magnets 12 on the rotor core 11, multiple sets of magnetic barriers 13 on the rotor core 11, end plates 14 at both ends of the rotor core 11, magnetic isolation strips 15 between the multiple sets of permanent magnets 12 and the multiple sets of magnetic barriers 13, multiple sets of damping grooves on the outer wall of the rotor core 11, damping blocks 16 in the multiple sets of damping grooves, balance blocks 17 on the multiple sets of end plates 14, heat dissipation plates 18 between the multiple sets of damping blocks 16, magnetic rings 19 on both sides of the rotor core 11, and sealing gaskets 21 at the connection between the two ends of the rotor core 11 and the outer wall of the end plates 14.

[0026] The rotor core 11 has multiple sets of first mounting slots and multiple sets of second mounting slots. Multiple sets of permanent magnets 12 are located in the multiple sets of first mounting slots. The multiple sets of permanent magnets 12 are rectangular in shape. The magnetization direction of the multiple sets of permanent magnets 12 is consistent with the direction of the rotor core 11. The length of the multiple sets of permanent magnets 12 is equal to the length of the rotor core 11.

[0027] Specifically, the first mounting slot provides installation and positioning space for the permanent magnet 12, ensuring that the permanent magnet 12 is stably embedded in the rotor core 11; the rectangular permanent magnet 12 can evenly distribute the magnetic field, and the magnetization direction is consistent with the direction of the rotor core 11, which can enhance the axial magnetic field strength. The length is equal to that of the core, which ensures that the magnetic field is evenly covered along the entire length of the core, providing a stable permanent magnet excitation foundation for the motor.

[0028] Multiple sets of magnetic barriers 13 are located in multiple sets of second mounting slots. The multiple sets of magnetic barriers 13 are radial. Multiple sets of permanent magnets 12 and multiple sets of magnetic barriers 13 are equidistantly distributed along the circular surface of the rotor core 11. The length of the multiple sets of magnetic barriers 13 is equal to the length of the permanent magnets 12.

[0029] Specifically, the second mounting slot provides a mounting carrier for the magnetic barrier 13. The radial magnetic barrier 13 can optimize the magnetic circuit path and guide the magnetic field to be distributed in a preset direction. The permanent magnet 12 and the magnetic barrier 13 are distributed at equal intervals to make the rotor circumferential magnetic field balanced and avoid local magnetic field distortion. The length matching the permanent magnet 12 ensures the synergistic effect of the magnetic circuit and improves the reluctance torque performance of the motor.

[0030] Multiple sets of end plates 14 are connected to the rotor core 11 by bolts. Multiple sets of magnetic rings 19 are located on multiple sets of end plates 14. Multiple sets of magnetic shielding strips 15 are made of non-magnetic material. The length of multiple sets of magnetic shielding strips 15 is one-third of the length of the rotor core 11.

[0031] Specifically, the end plate 14 is fastened to the iron core with bolts, forming a mechanical limit at both ends of the iron core to prevent internal components from loosening; the magnetic ring 19 located on the end plate 14 can optimize the end magnetic circuit and reduce magnetic field leakage; the non-magnetic magnetic isolation strip 15 blocks the leakage magnetic path between the permanent magnet 12 and the magnetic barrier 13. Its length is one-third of the iron core, which can both isolate the magnetic field and avoid excessively increasing the rotor weight, thus ensuring magnetic efficiency.

[0032] Multiple sets of damping blocks 16 are made of copper alloy and are clamped on the outer wall of the rotor core 11. The multiple sets of damping blocks 16 are arranged at equal intervals along the outer wall of the rotor core 11.

[0033] Specifically, the copper alloy damping block 16 has excellent conductivity and damping characteristics. When it is installed in the damping groove on the outer wall, it can suppress the vibration and harmonics when the rotor rotates at high speed. The equidistant arrangement makes the damping effect evenly distributed, reducing rotor running noise and energy loss, and improving running stability.

[0034] The heat sink 18 is evenly distributed along the outer wall of the rotor core 11, and the length of the multiple heat sinks 18 is two-thirds of the length of the rotor core 11.

[0035] Specifically, the heat sink 18 is evenly distributed on the outer wall to increase the contact area with the air and accelerate the heat dissipation during rotor operation; its length is two-thirds of the iron core, which can cover the main heat-generating area and avoid being too long to increase the rotor rotation resistance, thus ensuring that the motor operates at a suitable temperature.

[0036] Multiple sets of first mounting slots and multiple sets of second mounting slots are respectively opened on the multiple sets of end plates 14. Each set of first mounting slots and multiple sets of second mounting slots is fitted with a protective plate 22. One end of the multiple sets of protective plates 22 is respectively attached to the permanent magnet 12 and the magnetic barrier 13.

[0037] Specifically, the mounting groove on the end plate 14 provides a mounting position for the protective plate 22. The protective plate 22 fits against the permanent magnet 12 and the magnetic barrier 13, which can reduce the mechanical vibration and wear of the permanent magnet 12 and the magnetic barrier 13 when the rotor rotates. At the same time, it blocks dust from entering the mounting groove, protects the magnetic components from contamination, and extends their service life.

[0038] The specific usage and function of this embodiment are as follows:

[0039] Before use, the rotor assembly is prepared by placing the rotor core 11 horizontally, ensuring that the shaft hole is unobstructed and the inner wall is smooth for subsequent connection with the shaft. Permanent magnets 12 are embedded in the multiple sets of first mounting slots of the rotor core 11. The permanent magnets 12 are rectangular in shape, and their magnetization direction must be aligned with the axial direction of the rotor core 11, and their length must be equal to the length of the rotor core 11 to ensure uniform magnetic field distribution.

[0040] Assemble the magnetic barrier and magnetic shielding structure: Install radially arranged magnetic barriers 13 in multiple sets of second mounting slots, so that the permanent magnets 12 and magnetic barriers 13 are equidistantly distributed along the circular surface of the rotor core 11, and the length of the magnetic barriers 13 matches that of the permanent magnets 12; embed a non-magnetic magnetic shielding strip 15 in the gap between the permanent magnets 12 and the magnetic barriers 13, the length of the magnetic shielding strip 15 is one-third of the length of the rotor core 11, to block the magnetic leakage path of the magnetic field.

[0041] Install damping and heat dissipation components: Copper alloy damping blocks 16 are installed in multiple damping grooves on the outer wall of the rotor core 11. The damping blocks 16 are arranged at equal intervals along the outer wall. Heat dissipation plates 18 are installed between the damping blocks 16. The heat dissipation plates 18 are evenly distributed along the outer wall and their length is two-thirds of the length of the rotor core 11 to ensure sufficient heat dissipation area.

[0042] Assembly of end plates and protective structures: The end plates 14 are fastened to both ends of the rotor core 11 with bolts. The first and second mounting slots on the end plates 14 are respectively inserted into the protective plates 22, so that one end of the protective plates 22 is respectively attached to the permanent magnet 12 and the magnetic barrier 13 to form mechanical protection. The magnetic guide rings 19 are installed on the end plates 14 to ensure that the magnetic guide rings 19 are compatible with the magnetic circuit of the rotor core 11. Sealing gaskets 21 are embedded at the connection between the rotor core 11 and the outer wall of the end plates 14 to prevent dust and moisture from entering.

[0043] Final debugging: Install balance block 17 on end plate 14, adjust the position of balance block 17 through dynamic balance test to reduce vibration when the rotor rotates at high speed; check the magnetization direction of permanent magnet 12, the fit of magnetic strip 15, the stability of damping block 16, and the unobstructed heat sink 18. After ensuring that all components are assembled in place, connect the rotor to the motor shaft through the shaft hole to complete the overall assembly.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A permanent magnet assisted reluctance synchronous motor rotor, comprising a rotor core (11), characterized in that: The rotor core (11) has a shaft hole for connecting the rotating shaft. The rotor core (11) has multiple sets of permanent magnets (12) and multiple sets of magnetic barriers (13). Both ends of the rotor core (11) have end plates (14). Magnetic isolation strips (15) are provided between the multiple sets of permanent magnets (12) and the multiple sets of magnetic barriers (13). The outer wall of the rotor core (11) has multiple sets of damping grooves. Damping blocks (16) are provided in the multiple sets of damping grooves. Balance blocks (17) are provided on the multiple sets of end plates (14). Heat dissipation plates (18) are provided between the multiple sets of damping blocks (16). Magnetic guide rings (19) are provided on both sides of the rotor core (11). Sealing gaskets (21) are provided at the connection between both ends of the rotor core (11) and the outer wall of the end plates (14).

2. The permanent magnet assisted reluctance synchronous motor rotor according to claim 1, characterized in that: The rotor core (11) has multiple sets of first mounting slots and multiple sets of second mounting slots. Multiple sets of permanent magnets (12) are located in multiple sets of first mounting slots. The multiple sets of permanent magnets (12) are rectangular in shape. The magnetization direction of the multiple sets of permanent magnets (12) is consistent with the direction of the rotor core (11). The length of the multiple sets of permanent magnets (12) is equal to the length of the rotor core (11).

3. The permanent magnet assisted reluctance synchronous motor rotor according to claim 2, characterized in that: Multiple sets of magnetic barriers (13) are located in multiple sets of second mounting slots. The multiple sets of magnetic barriers (13) are radial. The multiple sets of permanent magnets (12) and the multiple sets of magnetic barriers (13) are equidistantly distributed along the circular surface of the rotor core (11). The length of the multiple sets of magnetic barriers (13) is equal to the length of the permanent magnets (12).

4. The permanent magnet assisted reluctance synchronous motor rotor according to claim 1, characterized in that: The multiple sets of end plates (14) are all connected to the rotor core (11) by bolts. The multiple sets of magnetic rings (19) are located on the multiple sets of end plates (14). The multiple sets of magnetic shielding strips (15) are made of non-magnetic material. The length of the multiple sets of magnetic shielding strips (15) is one-third of the length of the rotor core (11).

5. A permanent magnet assisted reluctance synchronous motor rotor according to claim 4, characterized in that: The multiple sets of damping blocks (16) are made of copper alloy and are clamped on the outer wall of the rotor core (11). The multiple sets of damping blocks (16) are arranged at equal intervals along the outer wall of the rotor core (11).

6. The permanent magnet assisted reluctance synchronous motor rotor according to claim 1, characterized in that: The heat sink (18) is evenly distributed along the outer wall of the rotor core (11), and the length of the multiple heat sinks (18) is two-thirds of the length of the rotor core (11).

7. A permanent magnet assisted reluctance synchronous motor rotor according to claim 6, characterized in that... Multiple sets of first mounting slots and multiple sets of second mounting slots are respectively opened on the multiple sets of end plates (14). Protective plates (22) are fixed on the multiple sets of first mounting slots and multiple sets of second mounting slots. One end of the multiple sets of protective plates (22) is respectively attached to the permanent magnet (12) and the magnetic barrier (13).

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