Magnetic-assisted coupling stator and rotor applied to magnetic-assisted synchronous reluctance energy-saving motor technology

Abstract

The utility model belongs to the technical field of manufacturing and application of synchronous motors, and particularly discloses a magnetic-assisted coupling stator and rotor applied to a magnetic-assisted synchronous reluctance energy-saving motor technology. Comprising a stator, a stator groove, a rotor, a plurality of outer-layer mounting through grooves, a plurality of middle-layer mounting through grooves, a plurality of inner-layer mounting through grooves, an outer-layer magnetism-assisting part, a middle-layer magnetism-assisting part, an inner-layer magnetism-assisting part, a plurality of outer rotor air holes, a plurality of inner rotor air holes and the like. The beneficial effects of the utility model are that the motor cost is reduced, the manufacturing process is simple, the service life of the motor is long, and the cost performance is high; the principle and working mode of the three-phase asynchronous motor are changed, and the efficiency and performance advantages of the motor are improved; when the load of the magnetism-assisting synchronous reluctance motor changes from 10% to 130%, the output efficiency of the motor is always kept above 92%, the efficiency of the motor is improved greatly, and the service life of the motor is prolonged to a great extent; by adopting the magnetic aid material ferrite, the reluctance torque output of the motor is improved, the rare earth use of the permanent magnet motor is indirectly reduced, and the economic cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of manufacturing and application of magnetic-assisted synchronous reluctance energy-saving motors, and specifically relates to a magnetic-assisted coupling stator and rotor applied to the magnetic-assisted synchronous reluctance energy-saving motor technology. Background Art

[0002] The high reluctance assisted magnetic coupling technology mainly realizes the linkage between the stator and rotor of the motor, balances the rotation difference of the stator and rotor magnetic fields, ensures the stability of the entire motor, and avoids stator and rotor magnetic field, mechanical and other failures.

[0003] The torque of the motor is composed of two parts: reluctance torque and magnetic assist torque. Reluctance torque is a key parameter of the motor's own output torque, magnetic field density, etc. It is of great significance to the energy efficiency, power and performance of the motor; reluctance torque is determined by the magnetic field, magnetic materials in the conductor and other related conditions.

[0004] Assisted magnetic torque is achieved by adding auxiliary magnetic materials inside the motor to increase the motor torque and enhance the motor energy efficiency, power and other performance. The three-phase asynchronous motor is a squirrel cage structure and cannot increase the auxiliary magnetic torque. Due to the limitations of the motor itself, its own reluctance torque is not high. Since the permanent magnet AC motor uses permanent magnet rare earth materials, the ratio of reluctance torque to permanent magnet torque is 6:4, which enhances the torque output of the permanent magnet motor. The auxiliary magnetic synchronous reluctance motor uses ferrite auxiliary magnetic materials to increase the auxiliary magnetic torque (the ratio of reluctance torque to auxiliary magnetic torque is 9:1). The cost is much lower than that of permanent magnet auxiliary magnetic materials, but the performance is ahead of rare earth permanent magnet materials, which has a significant improvement in motor performance.

[0005] At present, the performance of the magnetic steel used in the stator and rotor of the three-phase asynchronous motor is lower than that of the permanent magnet motor and the magnetic-assisted synchronous reluctance motor, and the magnetic reluctance torque of the motor itself is lower than that of the permanent magnet motor and the magnetic-assisted synchronous reluctance motor, which makes the performance of the three-phase asynchronous motor lower than that of the permanent magnet motor and the magnetic-assisted synchronous reluctance motor. At the same time, the rare earth permanent magnet magnetic-assisted technology is used to improve the motor torque. The cost of rare earth materials is relatively expensive, which increases the cost of the motor. In addition, the application of high reluctance technology in motors on the market is not high, and there are some shortcomings in motor performance and power, which cannot meet the performance requirements of magnetic-assisted reluctance torque motors.

[0006] Therefore, based on the above problems, the utility model provides a magnetic-assisted coupled stator and rotor applied to magnetic-assisted synchronous reluctance energy-saving motor technology. Utility Model Content

[0007] Purpose of the utility model: The purpose of the utility model is to provide a magnetic-assisted coupled stator and rotor applied to magnetic-assisted synchronous reluctance energy-saving motor technology to solve the technical problems existing in the existing background technology.

[0008] Technical solution: The utility model discloses a magnetic-assist coupling stator and rotor used in magnetic-assist synchronous reluctance energy-saving motor technology, comprising a stator, a stator slot and a rotor, wherein the outer layer of the rotor is provided with a plurality of outer layer mounting slots, a plurality of middle layer mounting slots and a plurality of inner layer mounting slots from the outside to the inside, wherein the outer layer mounting slots, the middle layer mounting slots and the inner layer mounting slots are respectively embedded with an outer layer magnetic-assisting part, an middle layer magnetic-assisting part and an inner layer magnetic-assisting part, a plurality of outer rotor pores are evenly distributed in the outer layer edge of the rotor and between the outer layer mounting slots, and a plurality of inner rotor pores are evenly distributed in the inner layer of the rotor and between the inner layers of the inner layer mounting slots; wherein the outer layer magnetic-assisting part, the middle layer magnetic-assisting part and the inner layer magnetic-assisting part are respectively made of ferrite materials.

[0009] In the technical solution, the inner layer installation through grooves cover the middle layer installation through grooves, the middle layer installation through grooves cover the outer layer installation through grooves, and the outer layer installation through grooves cover the outer rotor pores.

[0010] In the technical solution, the installation through groove is a V-shaped structure; the middle layer installation through groove is a flat-bottomed V-shaped structure; and the inner layer installation through groove is a flat-bottomed V-shaped structure.

[0011] In the technical solution of the present invention, the plurality of outer rotor air holes and the plurality of inner rotor air holes are non-aligned structures.

[0012] In the technical solution, the magnetic assist coupling stator and rotor applied to the magnetic assist synchronous reluctance energy-saving motor technology also includes a first limiting portion on the end faces of both ends of the outer layer mounting slot, a second limiting portion on the end faces of both ends of the middle layer mounting slot, and a third limiting portion on the end faces of both ends of the inner layer mounting slot. The end faces of the outer layer magnetic assist portion, the middle layer magnetic assist portion, and the inner layer magnetic assist portion are respectively provided with an outer layer magnetic assist portion slot, a middle layer magnetic assist portion slot, and an inner layer magnetic assist portion slot used in conjunction with the first limiting portion, the second limiting portion, and the third limiting portion.

[0013] Compared with the prior art, the beneficial effects of the magnetic-assisted coupled stator and rotor applied to the magnetic-assisted synchronous reluctance energy-saving motor technology of the utility model are: 1. Reducing the cost of the motor, simple manufacturing process, long motor life, and high cost performance; 2. Changing the principle and working mode of the three-phase asynchronous motor to improve the efficiency and performance advantages of the motor; 3. When the load of the magnetic-assisted synchronous reluctance motor changes from 10% to 130%, the motor output efficiency always remains above 92%, the motor's own efficiency is greatly improved, and the motor's service life is greatly extended; 4. The magnetic-assisted material ferrite is used to improve the motor's reluctance torque output, indirectly reduce the use of rare earths in permanent magnet motors, and save economic costs; 5. The rotor adopts magnetic-assisted technology to increase the coupling density between the stator and the rotor, realize interference-free coupling function switching, and improve the efficiency, performance, and life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the main structure of a magnetic-assisted coupled stator and rotor used in a magnetic-assisted synchronous reluctance energy-saving motor technology of the utility model;

[0016] Figure 2 It is a partial enlarged structural schematic diagram of a magnetic-assisted coupling stator and rotor applied to magnetic-assisted synchronous reluctance energy-saving motor technology of the utility model;

[0017] Figure 3 It is a structural schematic diagram of an outer layer magnetic assisting part slot, a middle layer magnetic assisting part slot, an inner layer magnetic assisting part slot, etc. of a magnetic assisting coupling stator and rotor applied to magnetic assisting synchronous reluctance energy-saving motor technology of the utility model;

[0018] Among them, the serial numbers in the figure are as follows: 100-stator, 100-1-stator slot, 200-rotor, 201-outer layer installation slot, 202-middle layer installation slot, 203-inner layer installation slot, 201-1-first limiting part, 202-1-second limiting part, 203-1-third limiting part, 204-inner rotor air hole, 205-outer rotor air hole, 300-outer layer magnetic aid part, 301-middle layer magnetic aid part, 302-inner layer magnetic aid part, 300-1 outer layer magnetic aid part slot, 301-1-middle layer magnetic aid part slot, 302-1-inner layer magnetic aid part slot. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] like Figure 1 and Figure 2 The magnetic-assisted coupled stator and rotor used in the magnetic-assisted synchronous reluctance energy-saving motor technology shown in the figure include a stator 100, a stator slot 100-1 and a rotor 200.

[0024] The outer layer of the rotor 200 is provided with a plurality of outer layer installation slots 201, a plurality of middle layer installation slots 202, and a plurality of inner layer installation slots 203 in sequence from the outside to the inside.

[0025] The outer layer installation slot 201, the middle layer installation slot 202, and the inner layer installation slot 203 are respectively embedded with the outer layer magnetic assisting part 300, the middle layer magnetic assisting part 301, and the inner layer magnetic assisting part 302.

[0026] A plurality of outer rotor air holes 205 are evenly distributed inside the outer edge of the rotor 200 and between the outer mounting slots 201.

[0027] A plurality of inner rotor air holes 204 are evenly distributed in the inner layer of the rotor 200 and between the inner layers of the inner layer mounting slots 203;

[0028] Among them, the outer magnetic layer part 300, the middle magnetic layer part 301, and the inner magnetic layer part 302 are made of ferrite materials respectively, and the outer magnetic layer part 300, the middle magnetic layer part 301, and the inner magnetic layer part 302 include but are not limited to plate structures.

[0029] In addition, the preferred inner layer mounting slot 203 covers the middle layer mounting slot 202, the middle layer mounting slot 202 covers the outer layer mounting slot 201, and the outer layer mounting slot 201 covers the outer rotor air hole 205; wherein, two outer layer mounting slots 201 are provided, and have a V-shaped structure; three middle layer mounting slots 202 are provided, and have a flat-bottomed V-shaped structure; and three inner layer mounting slots 203 are provided, and have a flat-bottomed V-shaped structure.

[0030] In addition, the preferred installation slot 201 is in a V-shaped structure; the middle layer installation slot 202 is in a flat-bottomed V-shaped structure; and the inner layer installation slot 203 is in a flat-bottomed V-shaped structure.

[0031] Adjacent outer layer installation grooves 201 with V-shaped structures do not contact each other, adjacent middle layer installation grooves 202 with flat bottom V-shaped structures do not contact each other, and adjacent inner layer installation grooves 203 with flat bottom V-shaped structures do not contact each other.

[0032] In addition, preferably, the plurality of outer rotor pores 205 and the plurality of inner rotor pores 204 are non-aligned structures; the outer rotor pores 205 located within the outer edge of the outer rotor pores 205 and the inner rotor pores 204 within the inner layer are non-aligned structures, which achieves fast and efficient heat dissipation while reducing the overall weight.

[0033] Embodiment 2

[0034] Based on the first embodiment, Figure 3 The magnetic assist coupling stator and rotor shown in the figure applied to the magnetic assist synchronous reluctance energy-saving motor technology also include a first limiting portion 201-1 on the end faces of both ends of the outer layer mounting slot 201, and a second limiting portion 202-1 arranged on the end faces of both ends of the middle layer mounting slot 202, and a third limiting portion 203-1 arranged on the end faces of both ends of the inner layer mounting slot 203. The end faces of the outer layer magnetic assist portion 300, the middle layer magnetic assist portion 301, and the inner layer magnetic assist portion 302 are respectively provided with an outer layer magnetic assist portion slot 300-1, a middle layer magnetic assist portion slot 301-1, and an inner layer magnetic assist portion slot 302-1 used in conjunction with the first limiting portion 201-1, the second limiting portion 202-1, and the third limiting portion 203-1, so as to achieve the reliability of the overall structure fixed after assembly.

[0035] The working principle or structural principle of the magnetic-assisted coupling stator and rotor of this structure applied to the magnetic-assisted synchronous reluctance energy-saving motor technology is as follows:

[0036] Assembly: Align the outer magnetic-assisting part slot 300-1, the middle magnetic-assisting part slot 301-1, and the inner magnetic-assisting part slot 302-1 with the first limit part 201-1, the second limit part 202-1, and the third limit part 203-1 respectively, and then apply force to insert the outer magnetic-assisting part 300, the middle magnetic-assisting part 301, and the inner magnetic-assisting part 302 into the outer installation slot 201, the middle installation slot 202, and the inner installation slot 203 respectively.

[0037] Working description: After assembly (the magnetic material ferrite is embedded in the motor rotor, and the coil is wound into the stator slot 100-1), the stator three-phase winding (not marked in the figure, which does not affect the disclosure of the technical solution of this application) is energized to generate a three-phase alternating magnetic field. Due to the principle of minimum magnetic resistance path, the outer magnetic part 300, the middle magnetic part 301, and the inner magnetic part 302 (ferrite) in the rotor 200 are magnetized into N and S poles, and then a torque is generated to drive the rotor 200 to rotate and generate force.

[0038] The outer layer magnetic part 300, the middle layer magnetic part 301 and the inner layer magnetic part 302 (ferrite) in this structure have a high temperature resistance of 350°C and will not demagnetize due to the ambient temperature and the temperature rise inside the motor itself, thus maintaining high-efficiency motor performance output.

[0039] This structure adopts high magnetic resistance assisted magnetic coupling technology to improve the motor output torque and motor stator-rotor coupling performance.

[0040] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A magnetic-assisted coupling stator and rotor applied to magnetic-assisted synchronous reluctance energy-saving motor technology, comprising a stator (100), a stator slot (100-1) and a rotor (200), characterized in that: The outer layer of the rotor (200) is provided with a plurality of outer layer installation slots (201), a plurality of middle layer installation slots (202), and a plurality of inner layer installation slots (203) in sequence from the outside to the inside. The outer layer mounting groove (201), the middle layer mounting groove (202), and the inner layer mounting groove (203) are respectively embedded with the outer layer magnetic assisting portion (300), the middle layer magnetic assisting portion (301), and the inner layer magnetic assisting portion (302). A plurality of outer rotor air holes (205) are evenly distributed inside the outer edge of the rotor (200) and between the outer mounting slots (201). A plurality of inner rotor air holes (204) are evenly distributed in the inner layer of the rotor (200) and between the inner layers of the inner layer mounting grooves (203); The outer magnetic-assisting part (300), the middle magnetic-assisting part (301), and the inner magnetic-assisting part (302) are respectively made of ferrite materials.

2. According to claim 1, a magnetic-assisted coupled stator and rotor used in magnetic-assisted synchronous reluctance energy-saving motor technology, characterized in that: The inner layer installation slot (203) covers the middle layer installation slot (202), the middle layer installation slot (202) covers the outer layer installation slot (201), and the outer layer installation slot (201) covers the outer rotor air hole (205).

3. The magnetic-assisted coupled stator and rotor used in magnetic-assisted synchronous reluctance energy-saving motor technology according to claim 2, characterized in that: The installation through groove (201) is in a V-shaped structure; the middle layer installation through groove (202) is in a flat-bottomed V-shaped structure; and the inner layer installation through groove (203) is in a flat-bottomed V-shaped structure.

4. The magnetic-assisted coupled stator and rotor used in magnetic-assisted synchronous reluctance energy-saving motor technology according to claim 1, characterized in that: The plurality of outer rotor air holes (205) and the plurality of inner rotor air holes (204) are non-aligned structures.

5. The magnetic-assisted coupled stator and rotor used in magnetic-assisted synchronous reluctance energy-saving motor technology according to claim 3, characterized in that: The magnetic assist coupling stator and rotor used in the magnetic assist synchronous reluctance energy-saving motor technology also include a first limiting portion (201-1) arranged on the end faces of both ends of the outer layer installation slot (201), a second limiting portion (202-1) arranged on the end faces of both ends of the middle layer installation slot (202), and a third limiting portion (203-1) arranged on the end faces of both ends of the inner layer installation slot (203); the end faces of both ends of the outer layer magnetic assist portion (300), the middle layer magnetic assist portion (301), and the inner layer magnetic assist portion (302) are respectively provided with an outer layer magnetic assist portion slot (300-1), a middle layer magnetic assist portion slot (301-1), and an inner layer magnetic assist portion slot (302-1) used in conjunction with the first limiting portion (201-1), the second limiting portion (202-1), and the third limiting portion (203-1).

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