Multi-stator double-layer excitation rotor integrated motor with internal heat dissipation

Abstract

The invention relates to the technical field of motors, in particular to an internal heat dissipation multi-stator double-layer excitation rotor integrated motor which comprises a shell, end covers are fixedly connected to the two ends of the shell through first bolts, air holes are formed in the surfaces of the end covers, rotating shafts are rotationally connected into the end covers, and inner rotors and chucks are fixedly connected to the circumferential surfaces of the rotating shafts. Inclined holes are formed in the surface of the chuck; an outer rotor is fixedly connected to the circumferential surface of the chuck; the inner wall of the shell is fixedly connected with an outer stator; the inner side of the end cover is fixedly connected with an inner stator. By arranging the outer stator, the inner stator, the outer rotor and the inner rotor, a double-layer excitation effect can be formed when the motor operates, and the output power and the output torque of the motor are effectively improved. According to the structural design, the defect that the large-power requirement is met by simply increasing the size of the motor is avoided, the manufacturing cost is remarkably reduced, meanwhile, heat generated in the motor can be rapidly taken away under the cooperation of the air holes and the inclined holes, and the heat dissipation efficiency of the motor is remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric machines, in particular to a multi-stator double-layer excitation rotor integrated electric machine with internal heat dissipation. BACKGROUND

[0002] An electric machine, commonly known as a motor, is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law. The electric machine generally comprises a stator and a rotor, the stator comprises a stator core and a coil winding wound on the stator core, the rotor comprises a rotating shaft and a rotor core sleeved on the rotating shaft, and a permanent magnet is arranged on the outer edge of the rotor core. The electric machine is generally divided into a direct-current motor and an alternating-current motor. The main function of the electric machine is to generate driving torque, serving as a power source for electric appliances or various machines.

[0003] In the prior art, the power output of a single-stator electric machine is limited by the size of the stator core and the capacity of the winding, and it is difficult to meet the demand of a high-power scene. In a high-power scene, the volume of the electric machine needs to be simply increased to realize the demand of high-power output, which increases the manufacturing cost of the electric machine. Therefore, a multi-stator double-layer excitation rotor integrated electric machine with internal and external heat dissipation needs to be designed. SUMMARY

[0004] The application aims to solve the problems in the prior art and provides a multi-stator double-layer excitation rotor integrated electric machine with internal heat dissipation.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: a multi-stator double-layer excitation rotor integrated electric machine with internal heat dissipation comprises an outer shell, first bolts are arranged at both ends of the outer shell to fixedly connect end covers, air holes are arranged on the surfaces of the end covers, rotating shafts are rotatably connected to the interiors of the end covers, inner rotors and chucks are fixedly connected to the circumferential surfaces of the rotating shafts, inclined holes are arranged on the surfaces of the chucks, and outer rotors are fixedly connected to the circumferential surfaces of the chucks; outer stators are fixedly connected to the inner walls of the outer shell and correspond to the outer rotors; and inner stators are fixedly connected to the inner sides of the end covers and correspond to the inner rotors.

[0006] Further,

[0007] Bearing are sleeved on both ends of the rotating shafts, and the bearings are inlaid in the interiors of the end covers.

[0008] Further,

[0009] A fan blade is fixedly connected to the right end of the rotating shaft, a protective cover is arranged outside the fan blade, a connecting assembly is arranged outside the end cover on the right side, and the end cover is connected with the protective cover through the connecting assembly.

[0010] Further,

[0011] The connecting assembly comprises a connecting seat and a second bolt, the connecting seat is fixedly connected to the circumferential surface of the end cover on the right side, the second bolt is threadedly connected to the inside of the connecting seat, and the second bolt penetrates through the protective cover.

[0012] Further:

[0013] The shell is externally fixedly connected with heat dissipation fins, the heat dissipation fins are provided in plurality and are uniformly distributed around the shell.

[0014] Further:

[0015] The lower end of the shell is fixedly connected with mounting seats on both sides, and mounting holes are formed in the upper end faces of the mounting seats.

[0016] The present application has the following beneficial effects:

[0017] 1. Compared with the prior art, the multi-stator double-layer excitation rotor integrated motor is provided with an outer stator, an inner stator, an outer rotor and an inner rotor, so that the motor can form a double-layer excitation effect during operation, effectively improving the output power and output torque of the motor. This structural design not only avoids the disadvantages of simply increasing the size of the motor to meet the demand for high power, but also significantly reduces the manufacturing cost, improves the economy and practicality of the motor.

[0018] 2. Compared with the prior art, the multi-stator double-layer excitation rotor integrated motor is provided with air holes and inclined holes. With the rotation of the chuck, air on one side of the chuck is discharged to the other side of the chuck under the action of the inclined holes, and external air can smoothly enter the inside of the motor under the cooperation of the air holes, forming effective air convection, thereby rapidly removing the heat generated inside the motor, and significantly improving the heat dissipation efficiency of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the whole application;

[0020] Figure 2 It is an enlarged view of part A in the application; Figure 1

[0021] Figure 3 It is a structural schematic diagram of the inside of the application from a first perspective;

[0022] Figure 4 It is a structural schematic diagram of the inside of the application from a second perspective.

[0023] LEGEND:

[0024] ​1, shell; 2, end cover; 3, first bolt; 4, connecting assembly; 401, connecting seat; 402, second bolt; 5, protective cover; 6, fin; 7, rotating shaft; 8, mounting seat; 9, mounting hole; 10, outer stator; 11, inner stator; 12, outer rotor; 13, inner rotor; 14, chuck; 15, bearing; 16, fan blade; 17, inclined hole; 18, air hole. DETAILED DESCRIPTION

[0025] Referring to Figures 1-4 , the present application provides a multi-stator double-layer excitation rotor integrated motor with internal heat dissipation, comprising a shell 1, both ends of the shell 1 are fixedly connected with an end cover 2 through a first bolt 3, the surface of the end cover 2 is provided with an air hole 18, the inside of the end cover 2 is rotatably connected with a rotating shaft 7, the circumferential surface of the rotating shaft 7 is fixedly connected with an inner rotor 13 and a chuck 14, the surface of the chuck 14 is provided with an inclined hole 17, and the circumferential surface of the chuck 14 is fixedly connected with an outer rotor 12; the inner wall of the shell 1 is fixedly connected with an outer stator 10, and the outer stator 10 corresponds to the outer rotor 12; the inner side of the end cover 2 is fixedly connected with an inner stator 11, and the inner stator 11 corresponds to the inner rotor 13.

[0026] In use, the outer stator 10 is installed inside the shell 1, and the outer stator 10 corresponds to the outer rotor 12, then the inner stator 11 is installed inside the two end covers 2, so that the inner stator 11 corresponds to the inner rotor 13, after the motor is assembled, the motor is connected to the power supply, and the current passes through the coil winding of the outer stator 10 and the inner stator 11 to generate a magnetic field. The magnetic field generated by the outer stator 10 interacts with the outer rotor 12, and the magnetic field generated by the inner stator 11 interacts with the inner rotor 13, since the outer rotor 12 and the inner rotor 13 are both fixed on the rotating shaft 7, the two interaction forces jointly drive the rotating shaft 7 to rotate, so that the motor can form a double-layer excitation effect when running, effectively improving the output power and output torque of the motor. This structure design not only avoids the disadvantages of simply increasing the size of the motor to meet the demand for high power, but also significantly reduces the manufacturing cost, improves the economy and practicality of the motor, and at the same time, with the rotation of the chuck 14, the air on one side of the chuck 14 will be discharged to the other side of the chuck 14 under the action of the inclined hole 17, and with the cooperation of the air hole 18, external air can smoothly enter the inside of the motor, forming effective air convection, thereby rapidly removing the heat generated inside the motor, significantly improving the heat dissipation efficiency of the motor.

[0027] The rotating shaft 7 is sleeved with a bearing 15 at both ends, and the bearing 15 is embedded in the inside of the end cover 2. When working, by arranging the bearing 15, the bearing 15 can support and reduce friction during the rotation of the rotating shaft 7, ensuring that the rotating shaft 7 rotates stably and smoothly, reducing energy loss caused by friction, further improving the operating efficiency of the motor, and prolonging the service life of the motor.

[0028] The right end of the rotating shaft 7 is fixedly connected with a fan blade 16, the fan blade 16 is externally provided with a protective cover 5, the right end cover 2 is externally provided with a connecting assembly 4, and the end cover 2 is connected with the protective cover 5 through the connecting assembly 4. During operation, the rotating shaft 7 drives the fan blade 16 to rotate, the airflow formed by the rotation of the fan blade 16 cooperates with the inclined hole 17 on the inner chuck 14 to accelerate the airflow in the motor, so that the heat generated during the operation of the motor is promptly dissipated, thereby achieving good heat dissipation effect and preventing the motor from being damaged due to high temperature. The protective cover 5 can prevent foreign matters from entering the area of the fan blade 16, prevent the fan blade 16 from being damaged due to foreign matter interference during rotation, and ensure the safe operation of the motor.

[0029] The connecting assembly 4 comprises a connecting seat 401 and a second bolt 402, the connecting seat 401 is fixedly connected to the circumferential surface of the right end cover 2, the second bolt 402 is threadedly connected in the connecting seat 401, and the second bolt 402 penetrates the protective cover 5. During operation, the second bolt 402 is connected with the connecting seat 401 to realize the installation of the protective cover 5. This connection mode enables the protective cover 5 to be stably installed on the end cover 2. When the protective cover 5 needs to be disassembled for cleaning or maintenance, the second bolt 402 can be simply unscrewed, which is convenient and fast.

[0030] The outer shell 1 is externally fixedly connected with a plurality of heat dissipation fins 6 which are uniformly distributed around the outer shell 1. During operation, the heat dissipation fins 6 increase the contact area between the outer shell 1 and the external air, so that the heat in the motor can be more quickly conducted to the external environment, further improving the heat dissipation performance of the motor, ensuring that the motor maintains stable temperature during long-time operation, and maintaining good working condition.

[0031] The outer shell 1 is externally fixedly connected with a plurality of heat dissipation fins 6 which are uniformly distributed around the outer shell 1. During operation, the heat dissipation fins 6 increase the contact area between the outer shell 1 and the external air, so that the heat in the motor can be more quickly conducted to the external environment, further improving the heat dissipation performance of the motor, ensuring that the motor maintains stable temperature during long-time operation, and maintaining good working condition.

[0032] Working principle: when in use, the outer stator 10 is installed inside the shell 1, and the outer stator 10 corresponds to the outer rotor 12, then the inner stator 11 is installed inside the two end covers 2, so that the inner stator 11 corresponds to the inner rotor 13, after the motor is assembled, the motor is connected to the power supply, the current passes through the coil winding of the outer stator 10 and the inner stator 11, and a magnetic field is generated. The magnetic field generated by the outer stator 10 interacts with the outer rotor 12, and the magnetic field generated by the inner stator 11 interacts with the inner rotor 13, since the outer rotor 12 and the inner rotor 13 are fixed on the rotating shaft 7, the two interaction forces jointly drive the rotating shaft 7 to rotate. During the operation of the motor, the fan blades 16 fixedly connected to the right end of the rotating shaft 7 will rotate with the rotating shaft 7, which plays a role in heat dissipation and prevents the internal temperature of the motor from being too high to affect the performance. At the same time, since the shell 1 is uniformly distributed with multiple cooling fins 6 outside, the heat dissipation effect of the motor is further enhanced, ensuring that the motor maintains a stable working temperature during long-term operation. When it is necessary to install the motor on other equipment, the mounting holes 9 on the mounting seats 8 on the lower end of the shell 1 can be used to firmly install the motor at the target position using bolts and other fixing members, which is convenient, fast, stable and reliable. This multi-stator double-layer excitation rotor integrated motor, with its unique structure design, has significant advantages in high-power application scenarios, effectively solving the problems of power output limitation of existing single-stator motors and cost increase caused by simply increasing the size of the motor to meet the demand for high power. At the same time, with the rotation of the chuck 14, the air on one side of the chuck 14 will be discharged to the other side of the chuck 14 under the action of the inclined hole 17, and the external air can smoothly enter the motor interior under the cooperation of the air hole 18, forming effective air convection, thereby rapidly removing the heat generated inside the motor, significantly improving the heat dissipation efficiency of the motor.

[0033] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacement of some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-stator double-layer excited rotor integrated motor with internal heat dissipation, comprising a shell (1), characterized in that: The both ends of the shell (1) are fixedly connected with end covers (2) through first bolts (3), the surface of the end cover (2) is provided with air holes (18), the inside of the end cover (2) is rotatably connected with a rotating shaft (7), the circumferential surface of the rotating shaft (7) is fixedly connected with an inner rotor (13) and a chuck (14), the surface of the chuck (14) is provided with inclined holes (17), the circumferential surface of the chuck (14) is fixedly connected with an outer rotor (12); the inner wall of the shell (1) is fixedly connected with an outer stator (10), the outer stator (10) corresponds to the outer rotor (12); the inside of the end cover (2) is fixedly connected with an inner stator (11), the inner stator (11) corresponds to the inner rotor (13).

2. The integrated motor of claim 1, wherein: The both ends of the rotating shaft (7) are sleeved with bearings (15), the bearings (15) are embedded in the inside of the end cover (2).

3. The integrated motor of claim 1, wherein: The right end of the rotating shaft (7) is fixedly connected with a fan blade (16), the outside of the fan blade (16) is provided with a protective cover (5), the outside of the end cover (2) located on the right side is provided with a connecting assembly (4), the end cover (2) is connected with the protective cover (5) through the connecting assembly (4).

4. The integrated motor of claim 3, wherein: The connecting assembly (4) comprises a connecting seat (401) and a second bolt (402), the circumferential surface of the end cover (2) located on the right side is fixedly connected with the connecting seat (401), the inside of the connecting seat (401) is threadedly connected with the second bolt (402), and the second bolt (402) penetrates through the protective cover (5).

5. The integrated motor of claim 1, wherein: The outside of the shell (1) is fixedly connected with heat dissipation fins (6), a plurality of heat dissipation fins (6) are evenly distributed around the shell (1).

6. The integrated motor of claim 1, wherein: The lower end of the shell (1) is fixedly connected with mounting seats (8) on the both sides, and mounting holes (9) are formed in the upper end face of the mounting seat (8).

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