High-reliability stator and rotor iron core of high-temperature and high-speed permanent magnet motor

Abstract

The utility model relates to the technical field of motor accessories, and discloses a high-reliability stator and rotor iron core of a high-temperature high-speed permanent magnet motor, which comprises a silicon steel sleeve, permanent magnets, a support ring and a rotor iron core, the inner side of the silicon steel sleeve is sleeved with a permanent magnet, a hollow interlayer is arranged between the permanent magnet and the silicon steel sleeve, a heat absorption copper ring is sleeved with the hollow interlayer, and air collection holes are formed in the inner wall of the silicon steel sleeve and located outside the heat absorption copper ring at equal intervals; supporting rings are arranged at the two ends of the silicon steel sleeve, arc-shaped ventilation openings are formed in the supporting rings at equal intervals, and positioning plates are welded to the inner rings of the supporting rings. According to the high-reliability stator and rotor iron core of the permanent magnet motor, the stability of the rotor iron core in high-speed rotation is greatly improved, and the high-temperature heat dissipation capability of the permanent magnet motor is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor accessories, in particular to a high-reliability stator and rotor iron core of a high-temperature and high-speed permanent magnet motor. Background Art

[0002] The stator and rotor cores of permanent magnet motors are important components of the motor, and they each play a key role in the operation of the motor; the stator core is mainly made of stamped silicon steel sheets tightly stacked, usually used on the stator of the three-phase winding, and plays the role of positioning the coil, enhancing the magnetic field, and supporting. The structure of the rotor core can be divided into hidden pole type and salient pole type according to the distribution of the air gap between the stator and rotor. Salient pole rotors have obvious protruding magnetic poles, and the air gap is unevenly distributed.

[0003] The conventional high-reliability stator and rotor cores of permanent magnet motors have the following disadvantages: 1. The stability of the rotor core cannot be greatly improved during high-speed rotation, and the permanent magnet motor has poor high-temperature heat dissipation capacity and is easily damaged after long-term use. Therefore, those skilled in the art provide a high-reliability stator and rotor core for high-temperature and high-speed permanent magnet motors to solve the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-reliability stator and rotor core for a high-temperature, high-speed permanent magnet motor, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] High-reliability stator and rotor cores for high-temperature, high-speed permanent magnet motors, including silicon steel sleeves, permanent magnets, support rings and rotor cores;

[0007] The inner side of the silicon steel sleeve is provided with a permanent magnet and a hollow interlayer is provided between the permanent magnet and the silicon steel sleeve, the inner side of the hollow interlayer is provided with a heat-absorbing copper ring, the inner wall of the silicon steel sleeve and the outer side of the heat-absorbing copper ring are provided with air collecting holes at equal distances, the inner side of the permanent magnet is provided with a rotor bracket and the outer side of the rotor bracket is installed with a rotor core by screws, support rings are provided at both ends of the silicon steel sleeve and arc-shaped air vents are provided on the support rings at equal distances, and a positioning plate is welded to the inner ring of the support ring.

[0008] As a further solution of the utility model: bearings are provided at both ends of the rotor bracket and the bearing sleeves are arranged in the positioning plate, which can improve the stability during rotation and also have a sealing effect to prevent dust and moisture from entering the silicon steel sleeve.

[0009] As a further solution of the utility model: a rotating shaft is sleeved on the axis of the rotor bracket.

[0010] As a further solution of the utility model: a positioning sleeve is sleeved on the end of the rotating shaft and located at the rotor bracket.

[0011] As a further solution of the utility model: a locking bolt is installed on the positioning plate through a screw hole, and docking screw holes corresponding to the locking bolt are provided at both ends of the permanent magnet and one end of the locking bolt is located in the docking screw hole, which is convenient for connecting the support ring to the permanent magnet on the inner side of the silicon steel sleeve, and is easy to install and disassemble.

[0012] As a further solution of the utility model: winding racks are installed in the hollow interlayer at equal distances by screws.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When it is installed in the motor housing, the support ring is used for support, which has high strength and good anti-deformation effect, so that the stability of the rotor core in high-speed rotation is greatly improved. The permanent magnet is directly set in the silicon steel sleeve and is set around the rotor core at a close distance to make the rotor core rotate at high speed. The two ends of the rotor bracket are connected to the positioning plate through bearings, which can improve the stability during rotation and have a sealing effect to prevent dust and moisture from entering the silicon steel sleeve, thereby extending the service life of the stator and rotor.

[0015] 2. The heat-absorbing copper ring is used to quickly absorb internal heat, and the rotor core forms airflow during rotation. The arc-shaped vents and air collecting holes are used to improve the outflow of hot air flow, which greatly improves the high-temperature heat dissipation capacity of the permanent magnet motor. The high-reliability stator and rotor core of the permanent magnet motor enables the rotor core to rotate at high speed, and the stability is greatly improved during high-speed rotation, which greatly improves the high-temperature heat dissipation capacity of the permanent magnet motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor of the utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor of the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the rotor core structure of the high-reliability stator and rotor core of the high-temperature and high-speed permanent magnet motor.

[0019] In the figure: 1. Silicon steel sleeve; 2. Arc vent; 3. Support ring; 4. Positioning plate; 5. Locking bolt; 6. Bearing; 7. Rotor bracket; 8. Positioning sleeve; 9. Rotating shaft; 10. Permanent magnet; 11. Heat-absorbing copper ring; 12. Winding frame; 13. Hollow interlayer; 14. Air collecting hole; 15. Docking screw hole; 16. Rotor core. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 In the embodiment of the utility model, the high-reliability stator and rotor core of the high-temperature and high-speed permanent magnet motor includes a silicon steel sleeve 1, a permanent magnet 10, a support ring 3 and a rotor core 16;

[0022] A permanent magnet 10 is sleeved on the inner side of the silicon steel sleeve 1, and a hollow interlayer 13 is arranged between the permanent magnet 10 and the silicon steel sleeve 1, a heat-absorbing copper ring 11 is sleeved inside the hollow interlayer 13, and air collecting holes 14 are opened on the inner wall of the silicon steel sleeve 1 and outside the heat-absorbing copper ring 11 at equal distances, a rotor bracket 7 is sleeved inside the permanent magnet 10, and a rotor core 16 is installed on the outer side of the rotor bracket 7 by screws, support rings 3 are arranged at both ends of the silicon steel sleeve 1, and arc-shaped air vents 2 are opened on the support ring 3 at equal distances, and a positioning plate 4 is welded to the inner circle of the support ring 3.

[0023] Among them, bearings 6 are sleeved at both ends of the rotor bracket 7 and the bearings 6 are sleeved in the positioning plate 4; this can improve the stability during rotation and also play a sealing effect to prevent dust and moisture from entering the silicon steel sleeve 1.

[0024] The rotating shaft 9 is sleeved at the axis of the rotor bracket 7; the rotor core 16 drives the rotating shaft 9 to rotate during high-speed rotation.

[0025] A positioning sleeve 8 is sleeved on the end of the rotating shaft 9 and located at the rotor bracket 7 ; the positioning sleeve 8 is used to limit the rotor bracket 7 .

[0026] Among them, a locking bolt 5 is installed on the positioning plate 4 through a screw hole, and docking screw holes 15 corresponding to the locking bolt 5 are arranged at both ends of the permanent magnet 10, and one end of the locking bolt 5 is located in the docking screw hole 15; it is convenient to connect the support ring 3 to the permanent magnet 10 on the inner side of the silicon steel sleeve 1, which is convenient for installation and disassembly.

[0027] The winding frames 12 are installed in the hollow interlayer 13 at equal intervals by screws; the winding frames 12 are used to facilitate winding of the enameled wire.

[0028] The working principle of the utility model is as follows: when it is installed in the motor housing, the support ring 3 is used to support it, and it has high strength and good anti-deformation effect, so that the stability of the rotor core 16 in high-speed rotation is greatly improved, and the permanent magnet 10 is directly set in the silicon steel sleeve 1 and is arranged around the rotor core 16 at a close distance, so that the rotor core 16 rotates at a high speed, and the two ends of the rotor bracket 7 are connected to the positioning plate 4 through the bearings 6, which can improve the stability in rotation and can also play a sealing effect to prevent dust and moisture from entering the silicon steel sleeve 1, and extend the service life of the stator and rotor, and the heat-absorbing copper ring 11 is used to quickly absorb internal heat, and the rotor core 16 forms an airflow during rotation, and the arc vent 2 and the air collecting hole 14 are used to improve the outflow of hot airflow, which greatly improves the high-temperature heat dissipation capacity of the permanent magnet motor, and the high-reliability stator and rotor core of the permanent magnet motor makes the rotor core 16 rotate at a high speed, and the stability is greatly improved during high-speed rotation, which greatly improves the high-temperature heat dissipation capacity of the permanent magnet motor.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-reliability stator and rotor core for a high-temperature, high-speed permanent magnet motor, comprising a silicon steel sleeve (1), a permanent magnet (10), a support ring (3) and a rotor core (16); It is characterized by: The inner side of the silicon steel sleeve (1) is provided with a permanent magnet (10), and a hollow interlayer (13) is provided between the permanent magnet (10) and the silicon steel sleeve (1); a heat-absorbing copper ring (11) is provided inside the hollow interlayer (13); air collecting holes (14) are provided on the inner wall of the silicon steel sleeve (1) and are located outside the heat-absorbing copper ring (11) at equal distances; a rotor bracket (7) is provided inside the permanent magnet (10), and a rotor core (16) is installed on the outer side of the rotor bracket (7) by screws; support rings (3) are provided at both ends of the silicon steel sleeve (1), and arc-shaped air vents (2) are provided on the support rings (3) at equal distances; and a positioning plate (4) is welded to the inner ring of the support ring (3).

2. The high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor according to claim 1 is characterized in that: Bearings (6) are sleeved on both ends of the rotor bracket (7), and the bearings (6) are sleeved in the positioning plate (4).

3. The high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor according to claim 1 is characterized in that: A rotating shaft (9) is sleeved on the axis of the rotor support (7).

4. The high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor according to claim 3 is characterized in that: A positioning sleeve (8) is sleeved on the end of the rotating shaft (9) and located on the rotor bracket (7).

5. The high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor according to claim 1, characterized in that: A locking bolt (5) is installed on the positioning plate (4) through a screw hole, and docking screw holes (15) corresponding to the locking bolt (5) are provided at both ends of the permanent magnet (10), and one end of the locking bolt (5) is located in the docking screw hole (15).

6. The high-reliability stator and rotor core of the high-temperature, high-speed permanent magnet motor according to claim 1, characterized in that: Winding racks (12) are installed in the hollow interlayer (13) at equal intervals by means of screws.

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