Inner double-rotor magnetic coupling propeller waterproof motor

Abstract

The utility model relates to the technical field of motors, in particular to an inner double-rotor magnetic coupling propeller waterproof motor, which comprises a motor shell, a first inner rotor and a second inner rotor, a first paddle and a second paddle are arranged in the motor shell, and the first paddle and the second paddle are fixedly connected with a first connecting block and a second connecting block respectively. The first connecting block and the second connecting block are fixedly connected with the first inner rotor and the second inner rotor respectively. Through the motor, the second inner rotor can be adjusted independently from the first inner rotor, magnetic coupling of the inner double rotors is realized, the first inner rotor and the second inner rotor can rotate synchronously, the rotating speed of one of the rotors can be controlled independently, and the output power and efficiency of the motor are improved. Meanwhile, the inner rotor and the outer stator are not in physical contact, so that the problems of friction loss and heating are avoided, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an inner double-rotor magnetic coupling propeller waterproof motor. Background Art

[0002] The underwater propulsion motor is an important component of the underwater vehicle. It converts electrical energy into propulsion and drives the underwater vehicle to move in the water. At present, the commonly used underwater propulsion motors include propeller thrusters, jet thrusters, fishtail thrusters, etc. Among them, the propeller thruster is the most common one, which has the advantages of simple structure, high efficiency, and large thrust. However, propeller thrusters also have some disadvantages, such as high noise, susceptibility to seawater erosion, and the need for complex shaft systems and sealing devices. In order to solve these problems, some researchers have proposed a magnetically coupled propeller thruster, which uses a magnetic coupling to isolate the motor from the propeller, thereby completely isolating the motor from the seawater, avoiding the use of shaft systems and sealing devices, and reducing noise and maintenance costs. The motor in the related art usually adopts a single inner rotor structure, which makes it difficult to adjust the speeds of multiple rotors independently. In some application scenarios, it is necessary to achieve synchronous rotation between the inner rotors and to achieve their separate control. In view of this, it is necessary to improve the current motor to solve the above problems;

[0003] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute prior art. Utility Model Content

[0004] The purpose of the utility model is to provide an inner double rotor magnetic coupling propeller waterproof motor to solve the problem that the motor proposed in the above background technology usually adopts a single inner rotor structure, which makes it difficult to independently adjust the speeds of multiple rotors. In some application scenarios, it is necessary to achieve synchronous rotation between the inner rotors and also to achieve their separate control.

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

[0006] An inner double-rotor magnetically coupled propeller waterproof motor comprises a motor housing, a first inner rotor and a second inner rotor, wherein a first blade and a second blade are arranged inside the motor housing, the first blade and the second blade are respectively fixedly connected to a first connecting block and a second connecting block, and the first connecting block and the second connecting block are respectively fixedly connected to the first inner rotor and the second inner rotor.

[0007] As a preferred technical solution, a first inner bearing is arranged on the outer side of the first inner rotor, and a first inner rotor strong magnet is arranged on the outer side of the first inner bearing.

[0008] As a preferred technical solution, a first outer bearing is arranged on the outer side of the first inner rotor strong magnet, and a first outer stator coil is arranged on the outer side of the first outer bearing.

[0009] As a preferred technical solution, a second inner bearing is arranged on the outer side of the second inner rotor, and a second inner rotor strong magnet is arranged on the outer side of the second inner bearing.

[0010] As a preferred technical solution, a second outer bearing is arranged on the outer side of the second inner rotor strong magnet, and a second outer stator coil is arranged on the outer side of the second outer bearing.

[0011] The beneficial effects of the utility model are:

[0012] With this motor, the second inner rotor can be adjusted independently of the first inner rotor, realizing the magnetic coupling of the inner double rotors, so that the first inner rotor and the second inner rotor can rotate synchronously or the speed of one of the rotors can be controlled separately, thereby improving the output power and efficiency of the motor. At the same time, since there is no physical contact between the inner rotor and the outer stator, friction loss and heating problems are avoided, and the service life of the motor is extended. In addition, since the motor housing is completely enclosed, it can prevent moisture and impurities from entering, ensuring the waterproof performance of the motor, and is suitable for use underwater or in humid environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an inner double-rotor magnetically coupled propeller waterproof motor proposed by the utility model;

[0014] Figure 2 This is a structural schematic diagram of an inner double-rotor magnetically coupled propeller waterproof motor proposed by the utility model.

[0015] In the figure: 1 first blade, 2 first connecting block, 3 first inner rotor, 4 first inner bearing, 5 first inner rotor strong magnet, 6 first outer bearing, 7 first outer stator coil, 8 motor housing, 9 second blade, 10 second connecting block, 11 second inner rotor, 12 second inner bearing, 13 second inner rotor strong magnet, 14 second outer bearing, 15 second outer stator coil. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] Reference Figure 1-2 An inner double-rotor magnetically coupled propeller waterproof motor comprises a motor housing 8, a first inner rotor 3 and a second inner rotor 11. A first blade 1 and a second blade 9 are arranged inside the motor housing 8. The first blade 1 and the second blade 9 are fixedly connected to a first connecting block 2 and a second connecting block 10 respectively.

[0020] Among them, the first connecting block 2 and the second connecting block 10 are respectively fixedly connected to the first inner rotor 3 and the second inner rotor 11, the first inner rotor 3 is provided with a first inner bearing 4 on the outside, the first inner bearing 4 is provided with a first inner rotor strong magnet 5 on the outside, the first inner rotor strong magnet 5 is provided with a first outer bearing 6 on the outside, and the first outer stator coil 7 is provided on the outside of the first outer bearing 6.

[0021] Through this design, the magnetic coupling of the inner double rotors is achieved, so that the first inner rotor 3 and the second inner rotor 11 can rotate synchronously or the speed of one of the rotors can be controlled separately, thereby improving the output power and efficiency of the motor. At the same time, since there is no physical contact between the inner rotor and the outer stator, friction loss and heating problems are avoided, and the service life of the motor is extended. In addition, since the motor housing 8 is completely enclosed, it can prevent moisture and impurities from entering, ensuring the waterproof performance of the motor, and is suitable for use underwater or in humid environments.

[0022] In other embodiments, a second inner bearing 12 is disposed on the outer side of the second inner rotor 11, a second inner rotor strong magnet 13 is disposed on the outer side of the second inner bearing 12, a second outer bearing 14 is disposed on the outer side of the second inner rotor strong magnet 13, and a second outer stator coil 15 is disposed on the outer side of the second outer bearing 14.

[0023] Through this design, magnetic coupling between the second inner rotor 11 and the second outer stator coil 15 is achieved, so that the second outer stator coil 15 can control the second inner rotor 11, thereby achieving that the second inner rotor 11 can be adjusted independently of the first inner rotor 3. By changing the current magnitude and direction of the second outer stator coil 15, the speed and direction of the second inner rotor 11 can be adjusted, thereby affecting the thrust and direction of the second blade 9, and achieving motion control of the motor.

[0024] In this embodiment, the second inner rotor 11 can be adjusted independently of the first inner rotor 3, realizing the magnetic coupling of the inner double rotors, so that the first inner rotor 3 and the second inner rotor 11 can rotate synchronously or the speed of one of the rotors can be controlled separately, thereby improving the output power and efficiency of the motor. At the same time, since there is no physical contact between the inner rotor and the outer stator, friction loss and heating problems are avoided, and the service life of the motor is extended. In addition, since the motor housing 8 is completely enclosed, it can prevent moisture and impurities from entering, ensuring the waterproof performance of the motor, and is suitable for use underwater or in humid environments.

[0025] 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. An inner double-rotor magnetically coupled propeller waterproof motor, comprising a motor housing (8), a first inner rotor (3) and a second inner rotor (11), characterized in that: A first blade (1) and a second blade (9) are arranged inside the motor housing (8); the first blade (1) and the second blade (9) are respectively fixedly connected to a first connecting block (2) and a second connecting block (10); the first connecting block (2) and the second connecting block (10) are respectively fixedly connected to a first inner rotor (3) and a second inner rotor (11).

2. The inner double rotor magnetic coupling propeller waterproof motor according to claim 1, characterized in that: A first inner bearing (4) is arranged on the outer side of the first inner rotor (3), and a first inner rotor strong magnet (5) is arranged on the outer side of the first inner bearing (4).

3. The inner double rotor magnetic coupling propeller waterproof motor according to claim 2, characterized in that: A first outer bearing (6) is arranged on the outer side of the first inner rotor strong magnet (5), and a first outer stator coil (7) is arranged on the outer side of the first outer bearing (6).

4. The inner double rotor magnetic coupling propeller waterproof motor according to claim 1, characterized in that: A second inner bearing (12) is arranged on the outer side of the second inner rotor (11), and a second inner rotor strong magnet (13) is arranged on the outer side of the second inner bearing (12).

5. The inner double rotor magnetic coupling propeller waterproof motor according to claim 4, characterized in that: A second outer bearing (14) is arranged outside the second inner rotor strong magnet (13), and a second outer stator coil (15) is arranged outside the second outer bearing (14).

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