AU2020104436A4

AU2020104436A4 - Motor having speed regulation function

Info

Publication number: AU2020104436A4
Application number: AU2020104436A
Authority: AU
Inventors: Wenjie Li; Tao Zhang; Tinglou ZHU
Original assignee: Jiangsu Jiaruifeng Mechanical and Electrical Equipment Co Ltd
Current assignee: Jiangsu Jiaruifeng Mechanical and Electrical Equipment Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-14
Publication date: 2021-07-29
Anticipated expiration: 2028-12-14
Also published as: AU2020342301A9; AU2020342301A1; CN213754285U; JP3235100U; WO2021043344A3; WO2021043344A2; AU2020342301A2

Abstract

The present disclosure discloses a motor with a speed regulating function, including a rotor, a rotating shaft, an outer sleeve, an inner sleeve, and a regulator, where one end of the rotor is fixedly connected to the outer sleeve through the rotating shaft, one side of the outer sleeve is provided with the inner sleeve, one side of the inner sleeve is fixedly connected to an output shaft, and the output shaft is sleeved with the regulator. The motor according to the present disclosure is scientific and reasonable in structure, safe and easy to use, the rotor rotates to drive the rotating shaft to rotate, and fan blades also rotate with the rotating shaft. Wind generated through the rotation of the fan blades passes through a spiral through hole to form spiral wind inside the outer sleeve, which increases the contact area between external cold air and the inside of the outer sleeve, has a good heat dissipation effect on an inner wall of the outer sleeve, and effectively solves the problem that wind directly passes through the inside of the outer sleeve, resulting in low air cooling efficiency. In addition, compared with the existing water cooling, the air cooling makes the failure rate lower because no water is added, and the motor is smaller and lighter. 1/3 DRAWINGS FIG.1 1F9.7 FIG. 2

Description

1/3

DRAWINGS

FIG.1

1F9.7 FIG. 2

MOTOR WITH SPEED REGULATING FUNCTION TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of motors, and in particular, to a motor with a speed regulating function.

BACKGROUD

[0002] A speed governor is composed of a conductor rotor, a permanent magnet rotor and a regulator. When the conductor rotor rotates, the conductor rotor and the permanent magnet rotor move relative to each other, and a permanent magnetic field generates eddy current on the conductor rotor; besides, the eddy current generates an induced magnetic field which interacts with the permanent magnetic field, so that the permanent magnet rotor is driven to rotate in the same direction as the conductor rotor, the torque of an input shaft is transmitted to an output shaft, and the rotating speed of a load end is changed by changing the number of stages, voltage, current, frequency, or the like of the motor; therefore, the load end achieves higher service performance, which is especially suitable for supporting loads such as pumps and fans with large flow changes, and can achieve good energy-saving effects. At present, cooling modes of adjustable-speed motors include water cooling and air cooling. Cooling liquid pipeline structures in the water cooling mode are mostly large in size, while the cooling effect of fins in the air cooling mode is low, which greatly limits the operation of the adjustable-speed motors. Therefore, there is an urgent need for a motor with a speed regulating function to solve the above problems.

SUMMARY

[0003] To solve the above technical problems, the present disclosure provides the following technical solution: A motor with a speed regulating function, including a rotor, a rotating shaft, an outer sleeve, an inner sleeve, and a regulator, where one end of the rotor is fixedly connected to the outer sleeve through the rotating shaft, one side of the outer sleeve is provided with the inner sleeve, one side of the inner sleeve is fixedly connected to an output shaft, the output shaft is sleeved with the regulator, and the rotating shaft is provided with fan blades.

[0004] A speed governor is formed by combining the outer sleeve, the inner sleeve and the regulator. The outer sleeve is equivalent to a conductor rotor and the inner sleeve is equivalent to a permanent magnet rotor. The rotor drives the rotating shaft to rotate to make the outer sleeve rotate. When the outer sleeve rotates, the outer sleeve and the inner sleeve move relative to each other, and the permanent magnetic field generates eddy current on the outer sleeve; at the same time, the eddy current generates an induced magnetic field which interacts with the permanent magnetic field, so that the inner sleeve is driven to rotate in the same direction as the outer sleeve, the torque of a motor input shaft is transmitted to an output shaft and a load, and the rotating speed of the load is regulated by the regulator.

[0005] Further, the rotating shaft is provided with fan blades.

[0006] The rotor drives the rotating shaft to rotate, and at the same time, the fan blades rotate together. The wind generated through the rotation of the fan blades can take away heat emitted by the outer sleeve, thereby achieving the effect of air cooling.

[0007] Further, the outer sleeve is provided with several through holes, and the several through holes correspond to the fan blades.

[0008] The rotor drives the rotating shaft to rotate, and at the same time, the fan blades also rotate together. The wind generated through the rotation of the fan blades enters the outer sleeve and the inner sleeve through the through holes, and the external cold air passes through the outer sleeve and the inner sleeve to form air circulation, thereby taking away the heat from the outer sleeve and the inner sleeve, achieving the effect of cooling the inner sleeve and the outer sleeve, and greatly improving the service performance of the speed governor composed of the outer sleeve, the inner sleeve and the regulator.

[0009] Further, the through holes are spirally formed.

[0010] The through holes are spirally formed, so that the wind generated by the fan blades is spiral at the through holes, and the wind entering the outer sleeve is also spiral, thereby prolonging the residence time of external cold air inside the outer sleeve. In addition, the spiral wind passes through the outer sleeve to increase the contact area between the wind and the outer sleeve, so that the effect is better. Moreover, the spiral through holes also improve the heat dissipation air volume inside the outer sleeve, which is beneficial to improving the service performance and prolonging the service life of the motor. Compared with the existing air cooling mode with direct ventilation through holes, the spiral through holes can solve the problem that wind directly passes through the inside of the outer sleeve, resulting in low air cooling efficiency, and the spiral air circulation greatly improves the air cooling efficiency of the motor. In addition, the contact area between external flowing air and the outer sleeve can be increased without other parts and connections, which is simple and efficient.

[0011] Further, the through holes are circumferentially formed in the outer sleeve.

[0012] The through holes are circumferentially formed in the outer sleeve, so that the external flowing air is closer to the inner wall of the outer sleeve, and the spiral flowing air passing through the through holes can take away the heat from the inner wall of the outer sleeve more intensively, thereby improving the efficiency of the spiral flowing air taking away the heat from the inner wall of the outer sleeve.

[0013] Further, the outer sleeve is arranged opposite to the inner sleeve, and the outer sleeve and the inner sleeve are concentric and have no mechanical contact with each other.

[0014] The outer sleeve and the inner sleeve are separated by an air gap, and external cold air passes through the outer sleeve and the inner sleeve to form air circulation, thereby taking away heat from the outer sleeve and the inner sleeve and achieving the effect of cooling the outer sleeve and the inner sleeve.

[0015] Further, the cross-sectional area of the outer sleeve is greater than that of the inner sleeve.

[0016] The cross-sectional area of the outer sleeve is greater than that of the inner sleeve to ensure the stability and uniqueness of an air duct.

[0017] Compared with the prior art, the present disclosure has the following beneficial effects:

[0018] A rotor rotates to drive a rotating shaft to rotate, and fan blades also rotate with the rotating shaft. Wind generated through the rotation of the fan blades passes through a spiral through hole to form spiral air circulation inside an outer sleeve, which increases the contact area between external cold air and the inside of the outer sleeve, has a good heat dissipation effect on an inner wall of the outer sleeve, and compared with existing air cooling, effectively solves the problem that wind directly passes through the inside of the outer sleeve, resulting in low air cooling efficiency. In addition, compared with the existing motor cooled using water, the motor has a lower failure rate because no water is added and an external water pipe and water source are not required, so that the motor is smaller and lighter, thereby improving the motor using experience.

[0019] A speed governor is formed by combining the outer sleeve, an inner sleeve and a regulator. The rotor drives the rotating shaft to rotate, so that the outer sleeve drives the inner sleeve to rotate while rotating. The torque of the motor input shaft is transmitted to an output shaft and a load, and the rotating speed of the load is regulated by the regulator, so that the rotor can adapt to various high-power loads. In addition, the motor has simple structural connections and is light and high in practicability.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a schematic diagram of an overall structure according to the present disclosure;

[0021] FIG. 2 is a schematic diagram of an installation structure of a rotor and speed governor according to the present disclosure;

[0022] FIG. 3 is a schematic diagram of an installation structure of fan blades and a speed governor according to the present disclosure;

[0023] FIG. 4 is a cross-sectional view of a motor according to the present disclosure; and

[0024] FIG. 5 is a schematic structural diagram of a speed governor according to the present disclosure.

[0025] In the figures: 1. Rotor; 2. Rotating shaft; 3. Outer sleeve; 4. Inner sleeve; 5. Through hole; 6. Fan blade; 7. Output shaft; 8. Regulator; 9. Speed governor; 10. Motor.

DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiment: Referring to FIGs. 1 to 5, the present disclosure provides the following technical solution: A motor with a speed regulating function, including a rotor 1, a rotating shaft 2, an outer sleeve 3, an inner sleeve 4, and a regulator 8, where an output shaft of the rotor 1 is fixedly connected to the outer sleeve 3 through the rotating shaft 2, one side of the outer sleeve 3 is provided with the inner sleeve 4, one side of the inner sleeve 4 is fixedly connected to an output shaft 7, and the output shaft 7 is sleeved with the regulator 8.

[0027] The rotor is the rotor of the motor 10, the rotor 1 rotates to drive the rotating shaft 2 to rotate, the rotating shaft 2 rotates to drive the outer sleeve 3 to rotate, the outer sleeve 3 rotates to generate an induced magnetic field to drive the inner sleeve 4 to rotate, the output shaft 7 is the output shaft 7 of the regulator, and the other end of the output shaft 7 is connected to a load. The regulator 8 is configured to adjust the rotating speed of the load. A speed governor 9 is formed by combining the outer sleeve 3, the inner sleeve 4 and the regulator 8. The outer sleeve 3 is equivalent to a conductor rotor and the inner sleeve 4 is equivalent to a permanent magnet rotor. The rotor 1 drives the rotating shaft 2 to rotate to make the outer sleeve 3 rotate. When the outer sleeve 3 rotates, the outer sleeve 3 and the inner sleeve 4 move relative to each other, and the permanent magnetic field generates eddy current on the outer sleeve 3; at the same time, the eddy current generates an induced magnetic field which interacts with the permanent magnetic field, so that the inner sleeve 4 is driven to rotate in the same direction as the outer sleeve 3, the torque of a rotor 1 input shaft is transmitted to the output shaft 7 and the load, and the rotating speed of the load is regulated by the regulator 8.

[0028] The rotating shaft 2 is provided with fan blades 6, the outer sleeve 3 is provided with several through holes 5, and the several through holes 5 correspond to the fan blades 6. The outer sleeve is arranged opposite to the inner sleeve, and the outer sleeve and the inner sleeve are concentric and have no mechanical contact with each other.

[0029] The rotating shaft 2 is further configured to drive the fan blades 6 to rotate while driving the outer sleeve 3 to rotate, the fan blades 6 rotate to generate wind which passes through the through holes 5, and the through holes 5 are for external cold air to pass through to cool the inside of the outer sleeve 3, to achieve the effect of taking heat from the outer sleeve 3 and the inner wall of the inner sleeve 4. The outer sleeve 3 and the inner sleeve 4 are separated by an air gap, the several through holes 5 and the fan blades 6 are correspondingly arranged to enable wind generated through the rotation of the fan blades 6 to directly enter the through holes , which is favorable for improving the efficiency of cooling the inside of the outer sleeve 3 and the inner sleeve 4. The wind generated through the rotation of the fan blades 6 enters the outer sleeve 3 and the inner sleeve 4 through the through holes 5, and external cold air passes through the outer sleeve 3 and the inner sleeve 4 to form air circulation, thereby taking away the heat from the outer sleeve 3 and the inner sleeve 4, achieving the effect of cooling the outer sleeve 3 and the inner sleeve 4, and greatly improving the service performance of the speed governor 9 composed of the outer sleeve 3, the inner sleeve 4 and the regulator 8.

[0030] The cross-sectional area of the outer sleeve 3 is greater than that of the inner sleeve 4, the through holes 5 are spiral, and the through holes 5 are circumferentially formed in the outer sleeve 3.

[0031] The cross-sectional area of the outer sleeve 3 is greater than that of the inner sleeve 4 to ensure the stability and uniqueness of an air duct. The through holes 5 are spirally formed, so that the wind generated by the fan blades 6 is spiral at the through holes 5, and the wind entering the outer sleeve 3 is also spiral, thereby prolonging the residence time of external cold air inside the outer sleeve 3. In addition, the spiral wind passes through the outer sleeve 3 to increase the contact area between the wind and the inner wall of the outer sleeve 3, so that the effect is better. Moreover, the spiral through holes 5 also improve the heat dissipation air volume inside the outer sleeve 3, which is beneficial to improving the service performance of the motor 10 and prolonging the service life of the motor 10. The through holes 5 are circumferentially formed in the outer sleeve 3, so that the external flowing air is closer to the inner wall of the outer sleeve 3, and the spiral flowing air passing through the through holes 5 can more intensively take away the heat from the inner wall of the outer sleeve 3, thereby improving the efficiency of the spiral flowing air taking away the heat from the inner wall of the outer sleeve 3. The contact area between the external flowing air and the outer sleeve 3 can be increased without other parts and connections, which is simple and efficient.

[0032] The working principle of the present disclosure is as follows: The outer sleeve 3, the inner sleeve 4 and the regulator 8 together form the speed governor 9 to regulate the speed of the load, the rotor 1 rotates to drive the rotating shaft 2 to rotate, and the rotating shaft 2 drives the fan blades 6 and the outer sleeve 3 to rotate together while rotating, the outer sleeve 3 rotates to generate the induced magnetic field to drive the inner sleeve 4 to rotate, and the fan blades 6 rotate to generate wind which passes through the spiral through holes 5, and the spiral wind is formed at the through holes 5 and enters the outer sleeve 3, thereby realizing the effect of taking away the heat from the inner wall of the outer sleeve 3 by external cold air.

[0033] Compared with straight through holes, the spiral through holes 5 enable air passing through the spiral through holes 5 to form spiral air flow, so that the fan blade 6 rotate to achieve better effects of cooling the inside of the outer sleeve 3 and the inner sleeve 4. This improves the air cooling degree of the fan blades 6, prevents external cold air from directly passing through the inside of the outer sleeve 3, and effectively increases the range and duration of air flow inside the outer sleeve 3. Compared with water cooling, the spiral air cooling makes the failure rate of the adjustable-speed motor 10 lower because there is no water source and no external pipe. In addition, the adjustable-speed motor 10 has a smaller size and is lighter, and the using experience on the motor 10 is better.

Claims

1. A motor with a speed regulating function, comprising a rotor (1), a rotating shaft (2), an outer sleeve (3), an inner sleeve (4), and a regulator (8), wherein one end of the rotor (1) is fixedly connected to the outer sleeve (3) through the rotating shaft (2), one side of the outer sleeve (3) is provided with the inner sleeve (4), one side of the inner sleeve (4) is fixedly connected to an output shaft (7), the output shaft (7) is sleeved with the regulator (8), and the rotating shaft (2) is provided with fan blades (6).

2. The motor with a speed regulating function according to claim 1, wherein the outer sleeve (3) is provided with several through holes (5), and the several through holes (5) correspond to the fan blades (6).

3. The motor with a speed regulating function according to claim 2, wherein the through holes (5) are spirally formed.

4. The motor with a speed regulating function according to claim 2 or 3, wherein the through holes (5) are circumferentially formed in the outer sleeve (3).

5. The motor with a speed regulating function according to claim 1, wherein the outer sleeve (3) is arranged opposite to the inner sleeve (4), and the outer sleeve (3) and the inner sleeve (4) are concentric and have no mechanical contact with each other; or wherein the cross sectional area of the outer sleeve (3) is greater than that of the inner sleeve (4).