Rotor core of permanent magnet auxiliary synchronous reluctance motor

Abstract

The rotor core comprises a stator and a rotor, the rotor is arranged on the inner side of the stator, slots are uniformly arranged on the front surface of the rotor close to the stator, side blocks are arranged on the rotor in the middle of two sides of the slots, fan blades are inserted in the slots of the rotor, and the side blocks are arranged on the side blocks. A plurality of groups of three-layer permanent magnet grooves are uniformly formed between the fan blades on the front side of the rotor and the bearing in the radial direction, sliding grooves are formed in the two sides, close to the fan blades and the bearing, of the permanent magnet grooves, T-shaped blocks are slidably connected into the sliding grooves, and limiting blocks are connected into the sliding grooves in the sides, away from the permanent magnet grooves, of the T-shaped blocks. The fan blades are convenient to assemble and disassemble, adaptive fan blades can be installed, so that the heat dissipation effect is improved, the T-shaped blocks are tightly attached to the two sides of the first permanent magnet and the two sides of the second permanent magnet, and the situation that the first permanent magnet and the second permanent magnet fall off, and the use effect is affected can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a rotor core for a permanent magnet assisted synchronous reluctance motor. Background Art

[0002] A permanent magnet assisted synchronous reluctance motor is a special type of motor that uses reluctance characteristics to assist the operation of a synchronous motor. Due to its high efficiency, high power density, and low noise, it can be widely used in industrial automation, new energy vehicles, wind power generation, and other fields.

[0003] As disclosed in application number 201821290958.9, a permanent magnet assisted synchronous reluctance motor rotor includes a rotor core. The rotor core is provided with a plurality of magnetic barrier structures evenly distributed along its circumference. The magnetic barrier structure includes at least three layers of permanent magnets arranged radially along the rotor core. The two ends of the permanent magnets are made of ferrite, and the middle part of the permanent magnets is made of neodymium iron boron. By using a mixture of ferrite and neodymium iron boron, the motor's anti-demagnetization performance, reluctance torque utilization rate, and structural strength can be improved. Furthermore, the use of permanent magnets that combine ferrite and neodymium iron boron can reduce the operating cost of the motor. However, in practical applications, it still has some shortcomings. The fan blades cannot be disassembled and replaced, which does not improve the heat dissipation effect and thus affects the performance of the permanent magnets. In addition, the bonding effect of the permanent magnets may weaken under high temperature conditions. If the two sides are not limited and fixed, they may fall off, thus affecting the performance. Utility Model Content

[0004] The purpose of this invention is to provide a rotor core for a permanent magnet assisted synchronous reluctance motor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet assisted synchronous reluctance motor rotor core, comprising a stator and a rotor. The rotor is disposed inside the stator, and slots are evenly distributed on the front of the rotor near the stator. Side blocks are provided on the rotor on both sides of the slots. Fan blades are inserted into the slots of the rotor, and heat dissipation holes are provided on the rotor between the fan blades. Multiple sets of three-layer permanent magnet slots are radially evenly distributed between the fan blades and bearings on the front of the rotor, and sliding grooves are provided on both sides of the permanent magnet slots near the fan blades and bearings. Each of the aforementioned grooves is slidably connected with a T-shaped block, and a limiting block is provided in the groove on the side of the T-shaped block away from the permanent magnet groove, so that the fan blades are inserted into the rotor and fixed. This allows for quick assembly and disassembly of the fan blades, facilitating the installation of fan blades with suitable shapes or numbers on the rotor, thereby improving the heat dissipation effect. Furthermore, when installing permanent magnet one and permanent magnet two, the T-shaped block can be tightly attached to permanent magnet one and permanent magnet two, preventing the adhesion of permanent magnet one and permanent magnet two from weakening under high temperature environment, which could lead to permanent magnet one and permanent magnet two falling off and affecting their performance.

[0006] Preferably, magnetic barriers are provided on the rotors on both sides of the permanent magnet slot, and a second permanent magnet is provided on the side of the permanent magnet slot near the magnetic barrier, and the second permanent magnet is made of ferrite material.

[0007] Preferably, permanent magnet one is provided in the permanent magnet groove inside the permanent magnet two, and the permanent magnet one is made of neodymium iron boron material. The use of neodymium iron boron permanent magnet one and ferrite permanent magnet two in combination can enhance its performance.

[0008] Preferably, each of the fan blades has a plug at the position corresponding to the slot at the bottom, and the fan blade is inserted into the slot of the rotor through the plug, so that the plug is inserted into the slot for easy initial positioning.

[0009] Preferably, threaded holes are provided at the corresponding middle positions of the fan blade and the side block, and threaded rods are threadedly connected to the corresponding threaded holes of the fan blade and the side block. Nuts are threadedly connected to both ends of the threaded rods, so that the threaded rods can be screwed through the side block and the fan blades for easy fixing.

[0010] Preferably, the stator on the outer side of the rotor is provided with winding slots evenly, and each winding slot is provided with a winding.

[0011] Preferably, a bearing is provided at the middle position of the rotor, and a rotating shaft is provided at the middle position of the rotor through the bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The rotor core of the permanent magnet assisted synchronous reluctance motor allows for quick assembly and disassembly of the fan blades by inserting the fan blade insert into the corresponding slot, then screwing the threaded rod through the fan blade and side block, and finally fixing it with nuts at both ends of the threaded rod. This facilitates the installation of fan blades with suitable shapes or numbers on the rotor, thereby improving the heat dissipation effect. Furthermore, when installing permanent magnet one and permanent magnet two, the T-shaped block can be moved close to permanent magnet one and permanent magnet two, and then the T-shaped block in the slide groove can be fixed by the limiting block, which ensures that the T-shaped block is tightly attached to permanent magnet one and permanent magnet two, preventing the bonding effect of permanent magnet one and permanent magnet two from weakening under high temperature environment, which could lead to permanent magnet one and permanent magnet two falling off and affecting their performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front sectional view of the present invention;

[0014] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0015] Figure 3 This is a cross-sectional view of the dust collection box of this utility model;

[0016] Figure 4 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] In the diagram: 1. Stator; 2. Winding slot; 3. Winding; 4. Fan blade; 5. Rotor; 6. Magnetic barrier; 7. Bearing; 8. Threaded hole; 9. Insert block; 10. Slot; 11. Threaded rod; 12. Side block; 13. Nut; 14. Heat dissipation hole; 15. Permanent magnet slot; 16. T-block; 17. Permanent magnet one; 18. Permanent magnet two; 19. Slide groove; 20. Limiting block; 21. Shaft. DETAILED DESCRIPTION

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Please see Figure 1-4An embodiment of this utility model is provided: a suspension and fixing device for a rattan product spraying production line, including a stator 1 and a rotor 5. The rotor 5 is provided on the inner side of the stator 1, and winding slots 2 are evenly provided on the outer side of the stator 1 of the rotor 5. Winding 3 is provided in each of the winding slots 2. A bearing 7 is provided in the middle position of the rotor 5, and a rotating shaft 21 is provided in the middle position of the rotor 5 through the bearing 7. Slots 10 are evenly provided on the front of the rotor 5 near the stator 1, and side blocks 12 are provided on the rotor 5 on both sides of the slots 10.

[0020] Each of the slots 10 of the rotor 5 has a fan blade 4 inserted into it, and each of the rotor 5 between the fan blades 4 has a heat dissipation hole 14. Multiple sets of three-layer permanent magnet slots 15 are radially and evenly arranged between the fan blades 4 and the bearing 7 on the front side of the rotor 5. Each of the permanent magnet slots 15 has a sliding groove 19 on both sides near the fan blades 4 and the bearing 7. Each of the sliding grooves 19 has a T-shaped block 16 slidably connected in it. Each of the sliding grooves 19 on the side of the T-shaped block 16 away from the permanent magnet slot 15 has a limiting block 20 connected in it. Each of the bottom of the fan blades 4 has an insertion block 9 at the position corresponding to the slot 10, and the fan blades 4 are inserted into the slots 10 of the rotor 5 through the insertion block 9.

[0021] Both the fan blade 4 and the side block 12 are provided with threaded holes 8 at their corresponding middle positions, and both the fan blade 4 and the side block 12 are connected to threaded rods 11 by threads, and both ends of the threaded rods 11 are connected to nuts 13 by threads.

[0022] During installation, the operator inserts the appropriate fan blade 4 into the corresponding slot 10 via the insert block 9 according to the motor's usage. Then, the threaded rod 11 is screwed into the threaded hole 8 and passes through the fan blade 4 and the side block 12. Finally, the nut 13 is screwed onto both ends of the threaded rod 11 to limit and fix it. This allows for the assembly and disassembly of the fan blade 4, facilitating the installation of the appropriate fan blade 4 shape or number of fan blades 4 on the rotor. This also allows the fan blade 4 and the heat dissipation hole 14 to dissipate heat synchronously, improving the heat dissipation effect.

[0023] When installing permanent magnet 17 and permanent magnet 28, the T-shaped blocks 16 in the movable sliding grooves 19 on both sides can be brought close to permanent magnet 17 and permanent magnet 28. Then, the limiting blocks 20 can be used to limit and fix the T-shaped blocks 16 in the sliding grooves 19, which can prevent the T-shaped blocks 16 from shifting and can make the T-shaped blocks 16 tightly attached to permanent magnet 17 and permanent magnet 28. This prevents the bonding effect of permanent magnet 17 and permanent magnet 28 from weakening under high temperature environment, which would cause permanent magnet 17 and permanent magnet 28 to fall off and affect their use effect.

[0024] Both sides of the permanent magnet slot 15 are equipped with magnetic barriers 6 on the rotors 5. The permanent magnet slot 15 is equipped with a second permanent magnet 18 on the side near the magnetic barrier 6. The second permanent magnet 18 is made of ferrite. The permanent magnet slot 15 inside the second permanent magnet 18 is equipped with a first permanent magnet 17. The first permanent magnet 17 is made of neodymium iron boron. The workers can coat the back of the first permanent magnet 17 and the second permanent magnet 18 with glue and then stick them into the corresponding permanent magnet slot 15. The neodymium iron boron permanent magnet 17 and the ferrite permanent magnet 18 can be used together to enhance their performance.

[0025] In this embodiment, during use, workers apply adhesive to the backs of permanent magnet 17 and permanent magnet 2 18, then adhere them into the corresponding permanent magnet grooves 15. This allows for the mixed use of neodymium iron boron permanent magnet 17 and ferrite permanent magnet 2 18, enhancing their performance. After permanent magnet 17 and permanent magnet 2 18 are bonded, the T-shaped blocks 16 in the side grooves 19 can be moved closer to permanent magnet 17 and permanent magnet 2 18. Then, limiting blocks 20 can be used to limit and fix the T-shaped blocks 16 in the grooves 19, preventing displacement and ensuring a tight fit between the T-shaped blocks 16 and permanent magnet 17 and permanent magnet 2 18, preventing the permanent magnet 17 and permanent magnet 2 18 from shifting. The bonding effect of magnet 18 weakens under high temperature, causing permanent magnet 17 and permanent magnet 18 to fall off, affecting their performance. Then, the insert block 9 at the bottom of the fan blade 4 can be inserted into the corresponding slot 10. After insertion, the threaded rod 11 can be rotated and screwed into the threaded hole 8, passing through the fan blade 4 and the side block 12. Then, the nut 13 is screwed onto both ends of the threaded rod 11 to limit and fix it. The fan blade 4 can be assembled and disassembled, making it convenient to install a fan blade 4 with a suitable shape or number of fan blades 4 on the rotor. Then, when the motor is in use, heat dissipation can be carried out synchronously through the fan blade 4 and the heat dissipation hole 14, which can improve its heat dissipation effect and reduce the impact of high temperature on permanent magnet 17 and permanent magnet 18.

[0026] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotor core for a permanent magnet assisted synchronous reluctance motor, characterized in that: The rotor includes a stator (1) and a rotor (5). The rotor (5) is provided inside the stator (1). The rotor (5) is provided with slots (10) on the front side of the rotor (5) near the stator (1). The rotor (5) on both sides of the slots (10) is provided with side blocks (12). Fan blades (4) are inserted into the slots (10) of the rotor (5). Heat dissipation holes (14) are provided on the rotor (5) between the fan blades (4). Multiple sets of three-layer permanent magnet slots (15) are provided radially and evenly between the fan blades (4) and the bearings (7) on the front side of the rotor (5). The permanent magnet slots (15) are provided with sliding grooves (19) on both sides near the fan blades (4) and the bearings (7). T-shaped blocks (16) are slidably connected in the sliding grooves (19). A limiting block (20) is connected in the sliding groove (19) on the side of the T-shaped block (16) away from the permanent magnet slots (15).

2. The rotor core of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: Both sides of the permanent magnet groove (15) are provided with magnetic barriers (6), and the permanent magnet second (18) is provided on the side of the permanent magnet groove (15) near the magnetic barrier (6), and the permanent magnet second (18) is made of ferrite material.

3. The rotor core of a permanent magnet assisted synchronous reluctance motor according to claim 2, characterized in that: The permanent magnet one (17) is provided in the permanent magnet groove (15) inside the permanent magnet two (18), and the permanent magnet one (17) is made of neodymium iron boron material.

4. The rotor core of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: Each of the fan blades (4) has a plug (9) at the position corresponding to the slot (10) at the bottom, and the fan blades (4) are connected to the slot (10) of the rotor (5) through the plug (9).

5. The rotor core of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The fan blade (4) and the side block (12) are provided with threaded holes (8) at their corresponding middle positions, and the threaded holes (8) of the fan blade (4) and the side block (12) are connected to threaded rods (11) by threads, and the two ends of the threaded rods (11) are connected to nuts (13) by threads.

6. The rotor core of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The stator (1) on the outside of the rotor (5) is uniformly provided with winding slots (2), and each winding slot (2) is provided with a winding (3).

7. The rotor core of a permanent magnet assisted synchronous reluctance motor according to claim 1, characterized in that: The rotor (5) has a bearing (7) at its middle position, and the rotor (5) has a shaft (21) at its middle position through the bearing (7).

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