Magnetic coupling variable speed propeller

Abstract

The utility model discloses a kind of magnetic coupling adjustable speed propellers, belong to underwater navigation and electric propulsion technical field.The motor of the propeller, driving assembly and driven assembly are arranged in the inside of cabin, motor drive shaft is connected driving assembly, a plurality of first permanent magnets are arranged on driving assembly, a plurality of second permanent magnets are arranged on driven assembly, first permanent magnet and second permanent magnet magnetic force cooperation;Impeller is arranged outside cabin, impeller is connected with driven assembly;Magnetic controller includes disc and electromagnet, disc is rotatably connected with driving assembly, a plurality of electromagnets are detachably arranged on disc, electromagnet is arranged between first permanent magnet and second permanent magnet.The driving assembly of the propeller drives driven assembly to rotate, by changing the state of electromagnet, impeller can be speed-regulated, the propeller eliminates the friction loss in traditional mechanical transmission, so that the propeller has multi-mode speed-regulating function, can adapt to more application scenarios, improves transmission efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of underwater navigation and electric propulsion technology, specifically a magnetically coupled adjustable speed propulsion device. Background Technology

[0002] Currently, most underwater propulsion systems use mechanical structures such as propellers to generate thrust. However, these systems suffer from low transmission efficiency and high noise levels due to friction between connecting components. Furthermore, the underwater environment places unique demands on propulsion performance. For example, underwater robots and submarines require propulsion systems with high efficiency, low noise, and good adaptability, while also demanding precise control. Traditional propulsion systems have limitations in these aspects, while magnetically coupled propulsion systems can better meet these requirements, improving the efficiency and flexibility of underwater operations.

[0003] Magnetic coupling technology is a power transmission method based on the interaction of magnetic fields. When applied to underwater propulsion, it can eliminate friction in mechanically connected components, improve transmission efficiency, and reduce energy loss. Compared to traditional mechanical transmission, magnetic coupling propulsion is more flexible and responsive; however, it suffers from limitations in speed regulation and imprecise speed and thrust control.

[0004] Therefore, it is necessary to propose a magnetically coupled adjustable speed thruster to solve the aforementioned technical problems existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to provide a magnetically coupled adjustable speed thruster, which can achieve precise control of speed and thrust while enabling the thruster to have functions such as multi-mode speed regulation, low noise, lubrication-free operation and automatic overload protection.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A magnetically coupled adjustable speed thruster includes a cabin, a motor, an active component, a driven component, a magnetic controller, and an impeller;

[0008] The motor and the active component are located inside the cabin. The drive shaft of the motor is connected to the active component, and several first permanent magnets are installed on the active component.

[0009] The driven component is located inside the cabin, and several second permanent magnets are provided on the driven component. The first permanent magnets and the second permanent magnets cooperate magnetically to drive the driven component to rotate.

[0010] The impeller is located at the external rear end of the cabin and is connected to the driven component;

[0011] The magnetic controller includes a disk and electromagnets. The disk is rotatably connected to the active component. Several electromagnets are detachably mounted on the disk. The electromagnets are positioned between the first permanent magnet and the second permanent magnet, and the electromagnets do not contact the first permanent magnet or the second permanent magnet.

[0012] Both the motor and the electromagnet are connected to a power source.

[0013] Preferably, the active component includes a first cylindrical body and a first connecting shaft;

[0014] The interior of the first cylinder is hollow, and a first connecting shaft is provided at the bottom of the outer side of the first cylinder, and the first connecting shaft is connected to the drive shaft of the motor.

[0015] The first permanent magnets are arranged at equal intervals on the first cylinder;

[0016] The inner bottom of the first cylinder is rotatably connected to the disk of the magnetic controller.

[0017] Preferably, the driven component includes a second cylinder and a second connecting shaft;

[0018] The second cylinder is fitted inside the first cylinder, and a second connecting shaft is provided at the top of the second cylinder;

[0019] A first gap is left between the bottom of the first cylinder and the bottom of the second cylinder for placing the disc;

[0020] A second gap is provided between the side wall of the first cylinder and the side wall of the second cylinder for placing an electromagnet;

[0021] Second permanent magnets are arranged at equal intervals on the second cylinder;

[0022] The second connecting shaft passes through the rear end of the cabin and connects to the impeller.

[0023] Preferably, the number of the first permanent magnets is 16, and the number of the second permanent magnets is 4;

[0024] The first permanent magnet and the second permanent magnet are arranged with alternating north and south poles.

[0025] Preferably, the electromagnet is composed of a magnetic metal and a metal wire;

[0026] The magnetic metal is rectangular in shape and can be detachably mounted on the side of the disc near the second cylinder.

[0027] The metal wire is wound around the outside of the magnetic metal and is connected to a power source.

[0028] Preferably, the magnetic metal is arranged at equal intervals on the disk.

[0029] Preferably, the diameter of the disk is smaller than the inner diameter of the first cylinder, and the diameter of the disk is larger than the outer diameter of the second cylinder.

[0030] Preferably, the magnetic controller further includes a third connecting shaft;

[0031] The third connecting shaft is located on the side of the disk near the first cylinder, and the end of the third connecting shaft away from the disk is rotatably connected to the first cylinder.

[0032] Preferably, the cabin consists of an outer shell, a front cover, and a rear cover;

[0033] One end of the outer casing is connected to the front cover, and the other end of the outer casing is connected to the rear cover;

[0034] The motor, driving component, and driven component are all housed inside the housing.

[0035] The impeller is located outside the rear cover, and a through hole is provided on the rear cover. The second connecting shaft passes through the through hole and connects to the impeller.

[0036] Preferably, it also includes a flow deflector, which is disposed on the outside of the rear cover.

[0037] Compared with the prior art, this utility model has the following advantages:

[0038] 1. This utility model uses magnetic coupling technology to replace traditional mechanical transmission, and uses magnetic field to transmit energy, eliminating friction loss in traditional mechanical transmission. This not only improves transmission efficiency and reduces energy loss, but also enables more precise control of speed and thrust. At the same time, the design of the magnetic metal and metal wires in the magnetic controller can be freely disassembled and assembled, enabling the thruster to have multi-mode speed regulation function, realizing four speed regulation methods: frequency conversion speed regulation, multi-speed regulation, voltage speed regulation and slip speed regulation. This can adapt to more application scenarios and greatly improve transmission efficiency.

[0039] 2. Compared with traditional mechanical propulsion, the magnetic coupling propulsion of this utility model reduces friction and vibration because there is no direct mechanical connection between the motor and the impeller, thereby reducing noise and vibration levels. This characteristic is particularly important in underwater applications where noise interference or impact on the surrounding environment needs to be reduced. At the same time, it also enables the propulsion to be lubrication-free.

[0040] 3. This utility model also has an automatic overload protection function. When the impeller is overloaded, the magnetic connection between the active component and the driven component will be cut off instantly, so as not to affect the rotation state of the active component, thereby protecting the motor.

[0041] 4. In this utility model, the driven component is located inside the cabin, which not only reduces the direct impact of external water flow on the driven component, but also improves the structural compactness and reduces the sealing difficulty. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0043] Figure 1 This is a schematic diagram of the structure of a magnetically coupled adjustable speed thruster in one embodiment;

[0044] Figure 2 for Figure 1 A schematic diagram showing the connection between the central magnetic controller and the active and driven components;

[0045] Figure 3 for Figure 2 Three-dimensional active components Figure 1 ;

[0046] Figure 4 for Figure 2 Three-dimensional active components Figure 2 ;

[0047] Figure 5 for Figure 2 A 3D view of the central magnetic controller;

[0048] Figure 6 for Figure 2 A three-dimensional view of the driven component.

[0049] In the diagram: 1. Outer shell, 2. Front cover, 3. Rear cover, 4. Motor, 5. Drive shaft, 6. Active component, 7. Magnetic controller, 8. Driven component, 9. Impeller, 10. Shield, 11. First permanent magnet, 12. Magnetic metal, 13. Second permanent magnet, 14. First cylinder, 15. First connecting shaft, 16. Second cylinder, 17. Second connecting shaft, 18. Step, 19. Metal wire, 20. Disk.

[0050] Specific implementation method

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0052] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0053] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0054] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or a single component; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] Example 1

[0057] like Figure 1 As shown in the figure, this embodiment describes a magnetically coupled adjustable speed thruster, which includes a cabin, a motor 4, an active component 6, a driven component 8, a magnetic controller 7, and an impeller 9. The motor 4 and the active component 6 are located inside the cabin. The drive shaft 5 of the motor 4 is connected to the active component 6. Several first permanent magnets 11 are arranged on the active component 6. The motor 4 can drive the active component 6 and the first permanent magnets 11 to rotate.

[0058] The driven component 8 is located inside the cabin. Several second permanent magnets 13 are installed on the driven component 8. The first permanent magnet 11 and the second permanent magnets 13 are magnetically coupled. The driving component 6 can drive the driven component 8 to rotate through the magnetic coupling between the first permanent magnet 11 and the second permanent magnets 13.

[0059] Impeller 9 is located at the external rear end of the cabin. Impeller 9 is connected to driven component 8, which can drive impeller 9 to rotate.

[0060] The magnetic controller 7 is located inside the cabin. The magnetic controller 7 includes a disk 20 and an electromagnet. The disk 20 is rotatably connected to the active component 6. Several electromagnets are detachably mounted on the disk 20. Each electromagnet is located between the first permanent magnet 11 and the second permanent magnet 13, and the electromagnet does not contact the first permanent magnet 11 or the second permanent magnet 13.

[0061] When the driving component 6 drives the driven component 8 to rotate, the state of the electromagnet is changed, which allows for speed regulation of the driven component 8 and the impeller 9. Both the motor 4 and the electromagnet are connected to a power source.

[0062] In this embodiment, the cabin consists of an outer shell 1, a front cover 2, and a rear cover 3. One end of the outer shell 1 is connected to the front cover 2, and the other end of the outer shell 1 is provided with a step 18 for installing the rear cover 3. The motor 4 is located at the front end inside the outer shell 1, the active component 6 and the driven component 8 are located at the rear end inside the outer shell 1, and the magnetic controller 7 is located between the active component 6 and the driven component 8. The impeller 9 is located outside the rear cover 3, and a through hole is opened in the middle of the rear cover 3 for the driven component 8 to connect to the impeller 9.

[0063] The active component 6 includes a first cylindrical body 14 and a first connecting shaft 15. The first cylindrical body 14 is cylindrical and hollow inside. The first connecting shaft 15 is located at the bottom outer side of the first cylindrical body 14 and is connected to the drive shaft 5 of the motor 4. When the drive shaft 5 of the motor 4 rotates, it drives the first cylindrical body 14 to rotate. First permanent magnets 11 are evenly spaced on the side wall of the first cylindrical body 14. When the motor 4 drives the first cylindrical body 14 to rotate, the first permanent magnets 11 will rotate with the first cylindrical body 14. A disc 20 of a magnetic controller 7 is rotatably connected to the bottom inner side of the first cylindrical body 14.

[0064] The driven component 8 includes a second cylindrical body 16 and a second connecting shaft 17. The second cylindrical body 16 is cylindrical and is fitted inside the first cylindrical body 14, with the first cylindrical body 14 and the second cylindrical body 16 not in contact with each other. The second connecting shaft 17 is connected to the middle of the top of the second cylindrical body 16, and the second connecting shaft 17 is connected to the impeller 9. When the driven component 8 rotates following the driving component 6, the second connecting shaft 17 can drive the impeller 9 to rotate.

[0065] A first gap is left between the bottom of the inner side of the first cylinder 14 and the bottom of the outer side of the second cylinder 16, and the first gap is used to place the disc 20; a second gap is left between the inner wall of the first cylinder 14 and the outer wall of the second cylinder 16, and the second gap is used to place the electromagnet.

[0066] The second permanent magnets 13 are evenly spaced on the side wall of the second cylinder 16, and the first permanent magnets 11 and the second permanent magnets 13 are arranged with alternating north and south poles. When the first permanent magnet 11 rotates under the drive of the motor 4, the first permanent magnet 11 and the second permanent magnet 13 are magnetically coupled. A tangential force tangential to the side wall of the second cylinder 16 is generated on the second permanent magnet 13, forcing the second cylinder 16 to change its rotational attitude. By adjusting the state of the electromagnet on the magnetic controller 7, multi-mode variable speed rotation between the active component 6 and the driven component 8 can be realized.

[0067] The second connecting shaft 17 passes through the through hole of the rear cover 3 and connects to the impeller 9 on the outside of the rear cover 3. When the second cylinder 16 rotates, it drives the second connecting shaft 17 to rotate, which in turn drives the impeller 9 to rotate. At this time, by adjusting the state of the electromagnet on the magnetic controller 7, asynchronous rotation between the impeller 9 and the motor 4 can be achieved.

[0068] In this embodiment, the diameter of the disk 20 is smaller than the inner diameter of the first cylinder 14, and the diameter of the disk 20 is larger than the outer diameter of the second cylinder 16; the electromagnets are evenly spaced around the edge of the disk 20.

[0069] In this embodiment, the electromagnet of the magnetic controller 7 is composed of a magnetic metal 12 and a metal wire 19. The magnetic metal 12 is rectangular in shape and is detachably disposed on the side of the disc 20 near the second cylinder 16, located in the second gap, and does not contact the first cylinder 14 and the second cylinder 16.

[0070] There are 6 magnetic metals 12, which are evenly spaced on the disk 20. A metal wire 19 is wound around the outside of each magnetic metal 12. The metal wire 19 is detachable from the magnetic metal 12 and is connected to a power source.

[0071] The magnetic controller 7 also includes a third connecting shaft, which is located on the side of the disc 20 near the first cylinder 14. The third connecting shaft is rotatably connected to the inner bottom of the first cylinder 14 via a bearing. Since the magnetic controller 7 is connected to the first cylinder 14 via a bearing, the magnetic controller 7 will not rotate with the first cylinder 14 when the first cylinder 14 rotates.

[0072] In this embodiment, the number of first permanent magnets 11 is four times the number of second permanent magnets 13. Preferably, the number of first permanent magnets is 16 and the number of second permanent magnets 13 is 4; and both the first permanent magnets 11 and the second permanent magnets 13 are arranged with alternating north and south poles.

[0073] In this embodiment, a flow guide shroud 10 is also provided on the outside of the rear cover 3.

[0074] In this embodiment, motor 4 is a servo motor, magnetic metal 12 of magnetic controller 7 is ferromagnetic metal, and metal wire 19 is copper metal wire.

[0075] This embodiment enables asynchronous rotation between impeller 9 and motor 4 by changing the state of the electromagnet, thus giving the propeller a multi-mode speed regulation function.

[0076] Variable frequency speed regulation is achieved by changing the power supply frequency of the electromagnet. The rotational speed of the driven component 8 and the impeller 9 is proportional to the power supply frequency. Variable frequency speed regulation can precisely control and adjust the rotational speed of the impeller 9 over a wide range.

[0077] By changing the number of electromagnets, multiple speed settings can be achieved, allowing for fixed-speed adjustment of the impeller 9.

[0078] Speed ​​regulation is achieved by changing the power supply voltage of the electromagnet. Adjusting the voltage adjusts the rotational speed. As the voltage decreases, the torque generated decreases, and the rotational speed of the driven component 8 and the impeller 9 also decreases.

[0079] Slip speed regulation is achieved by changing the number of turns of the metal wire 19 wrapped around the magnetic metal 12. Increasing the number of coil turns increases the electromotive force, thereby affecting the current and electromagnetic torque, indirectly increasing the speed of the motor 4, and enabling the motor 4 to withstand a larger load speed regulation.

[0080] The magnetically coupled adjustable speed thruster described in this embodiment uses magnetic coupling technology to replace traditional mechanical transmission. It utilizes a magnetic field to transmit energy, eliminating frictional losses inherent in traditional mechanical transmission. Furthermore, the design of the magnetic metal 12 and metal wire 19 in the magnetic controller 7 allows for free detachment and assembly, enabling the thruster to have multi-mode speed regulation capabilities, adapting to a wider range of applications and significantly improving transmission efficiency. Simultaneously, the absence of a direct mechanical connection between the motor 4 and the impeller 9 reduces friction and vibration, thereby lowering noise and vibration levels and enabling the thruster to operate without lubrication. This characteristic is particularly important in underwater applications where noise reduction or environmental impact is crucial.

[0081] The thruster also has an automatic overload protection function. When the impeller 9 is overloaded, since the active component 6 and the driven component 8 are hollow and have no physical connection, the magnetic connection between the active component 6 and the driven component 8 will be cut off instantly, which will not affect the rotation state of the active component 6, so as to protect the motor 4.

[0082] The method of using a magnetically coupled adjustable speed thruster described in this embodiment includes the following steps:

[0083] Step 1: Install the magnetically coupled adjustable speed thruster to ensure its normal operation;

[0084] Step 2: Start motor 4. The drive shaft 5 of motor 4 drives the first permanent magnet 11 to rotate. The second permanent magnet 13 follows the first permanent magnet 11 to rotate under the magnetic coupling. At the same time, the second permanent magnet 13 drives the impeller 9 to rotate.

[0085] Step 3: By changing at least one of the following four methods—the power supply voltage of the electromagnet, the power supply frequency of the electromagnet, the number of electromagnets, or the number of turns of the metal wire 19 wound in the electromagnet—the rotational speed of the second permanent magnet 13 relative to the first permanent magnet 11 can be adjusted, thereby adjusting the rotational speed of the impeller 9, so that the impeller 9 rotates asynchronously with the motor 4 until the impeller 9 reaches the required rotational speed.

[0086] The embodiments of this utility model are only used to illustrate the technical solutions of this utility model and are not intended to limit it. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetically coupled adjustable speed thruster, characterized in that, Includes the cabin, motor, active component, driven component, magnetic controller, and impeller; The motor and the active component are located inside the cabin. The drive shaft of the motor is connected to the active component, and several first permanent magnets are installed on the active component. The driven component is located inside the cabin, and several second permanent magnets are provided on the driven component. The first permanent magnets and the second permanent magnets cooperate magnetically to drive the driven component to rotate. The impeller is located at the external rear end of the cabin and is connected to the driven component; The magnetic controller includes a disk and electromagnets. The disk is rotatably connected to the active component. Several electromagnets are detachably mounted on the disk. The electromagnets are positioned between the first permanent magnet and the second permanent magnet, and the electromagnets do not contact the first permanent magnet or the second permanent magnet. Both the motor and the electromagnet are connected to a power source.

2. The magnetically coupled adjustable speed thruster according to claim 1, characterized in that, The active component includes a first cylindrical body and a first connecting shaft; The interior of the first cylinder is hollow, and a first connecting shaft is provided at the bottom of the outer side of the first cylinder, and the first connecting shaft is connected to the drive shaft of the motor. The first permanent magnets are arranged at equal intervals on the first cylinder; The inner bottom of the first cylinder is rotatably connected to the disk of the magnetic controller.

3. A magnetically coupled adjustable speed thruster according to claim 2, characterized in that, The driven component includes a second cylinder and a second connecting shaft; The second cylinder is fitted inside the first cylinder, and a second connecting shaft is provided at the top of the second cylinder; A first gap is left between the bottom of the first cylinder and the bottom of the second cylinder for placing the disc; A second gap is provided between the side wall of the first cylinder and the side wall of the second cylinder for placing an electromagnet; Second permanent magnets are arranged at equal intervals on the second cylinder; The second connecting shaft passes through the rear end of the cabin and connects to the impeller.

4. A magnetically coupled adjustable speed thruster according to claim 1, characterized in that, The number of the first permanent magnet is 16, and the number of the second permanent magnet is 4; The first permanent magnet and the second permanent magnet are arranged with alternating north and south poles.

5. A magnetically coupled adjustable speed thruster according to claim 3, characterized in that, The electromagnet is composed of magnetic metal and metal wire; The magnetic metal is rectangular in shape and can be detachably mounted on the side of the disc near the second cylinder. The metal wire is wound around the outside of the magnetic metal and is connected to a power source.

6. A magnetically coupled adjustable speed thruster according to claim 5, characterized in that, The magnetic metal is evenly spaced on the disk.

7. A magnetically coupled adjustable speed thruster according to claim 3, characterized in that, The diameter of the disk is smaller than the inner diameter of the first cylinder, and the diameter of the disk is larger than the outer diameter of the second cylinder.

8. A magnetically coupled adjustable speed thruster according to claim 2, characterized in that, The magnetic controller also includes a third connecting shaft; The third connecting shaft is located on the side of the disk near the first cylinder, and the end of the third connecting shaft away from the disk is rotatably connected to the first cylinder.

9. A magnetically coupled adjustable speed thruster according to claim 3, characterized in that, The cabin consists of an outer shell, a front cover, and a rear cover; One end of the outer casing is connected to the front cover, and the other end of the outer casing is connected to the rear cover; The motor, driving component, and driven component are all housed inside the housing. The impeller is located outside the rear cover, and a through hole is provided on the rear cover. The second connecting shaft passes through the through hole and connects to the impeller.

10. A magnetically coupled adjustable speed thruster according to claim 9, characterized in that, It also includes a flow deflector, which is disposed on the outside of the rear cover.

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