Rim motor with disturbance guide wheel

Abstract

The rim motor comprises a motor shell, stator assemblies and a rotor assembly, the stator assemblies are arranged at the two ends of the motor shell, the rotor assembly is arranged on the stator assemblies through bearings, the rotor assembly is located on the inner sides of the stator assemblies, a first flow channel allowing liquid to flow is formed in the motor shell, and a second flow channel allowing liquid to flow is formed in the motor shell. The rotor assembly comprises a rotor and a rotor motor, the rotor is provided with a disturbance guide wheel, the disturbance guide wheel is provided with a second flow channel communicating with the first flow channel, and the rotor motor is used for driving the rotor and the disturbance guide wheel to rotate. And tiny impurities in liquid can be removed and prevented from entering the bearing, the tiny impurities in an air gap between the stator and the rotor are pressed out along with water flow, the rotor is prevented from being clamped, and it is guaranteed that the sliding bearing has sufficient water flow lubrication.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a rim motor with a disturbance guide wheel. BACKGROUND

[0002] The rim motor with a disturbance guide wheel is an advanced direct-drive electric power technology, which has the advantages of high power density, high maneuverability, vibration and noise reduction, energy saving and environmental protection, etc. The rim motor with a disturbance guide wheel is widely used in ship propulsion systems (such as RDT) and aviation power systems (such as electric rim fans), and realizes high efficiency and compact design through the direct combination of the motor and the rotating part. The rim motor with a disturbance guide wheel integrates the motor stator and rotor, and cancels the intermediate links such as the transmission shaft, thereby improving the power density and efficiency. At the same time, this design also reduces noise and realizes full rotation function.

[0003] At present, the rim motor has the following problems in actual use: when the water quality is not up to standard, impurities will enter the bearing, which will interfere with the arrangement of water molecules on the surface of the bearing, making it difficult to form or unstable water film, affecting the lubrication effect and shortening the service life. SUMMARY

[0004] Therefore, the present application provides a rim motor with a disturbance guide wheel, which can remove small impurities in the liquid and prevent them from entering the bearing.

[0005] The rim motor with a disturbance guide wheel provided by the present application adopts the following technical scheme:

[0006] The rim motor with a disturbance guide wheel comprises a motor shell, a stator assembly and a rotor assembly, the stator assembly is arranged at both ends of the motor shell, the rotor assembly is arranged in the stator assembly through a bearing, the rotor assembly is located on the inner side of the stator assembly, a flow channel one for liquid flow is formed in the motor shell, the rotor assembly comprises a rotor and a rotor motor, a disturbance guide wheel is arranged on the rotor, the disturbance guide wheel has a flow channel two in communication with the flow channel one, and the rotor motor is used to drive the rotor and the disturbance guide wheel to rotate.

[0007] Optionally, a paddle is arranged on the rotor assembly, the paddle is located in the flow channel one, the rotor motor can drive the paddle to rotate, and the cross-sectional shape of the flow channel one is approximately double inverse ellipse.

[0008] Optionally, the area relationship of the flow channel one is as follows:

[0009] S=Z / 360×π×(R 2 / -r 2 / )-π×a×(R-r) 2

[0010] S = Z * r2 2 ; R: the outer diameter of the guide wheel, unit: mm; r: the inner diameter of the flow channel, unit: mm; Z: the number of flow channels; a: disturbance coefficient (related to flow rate).

[0011] Optionally, the disturbance guide wheel is provided with a helix angle θ in the circumferential direction.

[0012] Optionally, the helix angle θ ranges from 35° to 55°.

[0013] Optionally, the outer contour of the disturbance guide wheel is provided with a second flow channel spaced apart from the first flow channel along the circumferential direction of the disturbance guide wheel, and the impurities in the first flow channel enter the second flow channel and are discharged.

[0014] Optionally, the side wall of the second flow channel is provided with an elliptical arc-shaped groove.

[0015] Optionally, the paddle is a four-blade propeller.

[0016] In summary, the present application has at least one of the following beneficial technical effects: by setting the disturbance guide wheel, the bearings arranged at both ends of the motor can be lubricated, the small impurities in the liquid can be removed to avoid entering the bearings, the small impurities in the stator and rotor air gap can be pressed out with the water flow to avoid the rotor from being stuck, and the sliding bearing can be ensured to have sufficient water flow lubrication. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 is a cross-sectional view of an embodiment of the present application;

[0019] Figure 2 is a front view of an embodiment of the present application;

[0020] Figure 3 is a schematic view of the disturbance guide wheel structure of an embodiment of the present application;

[0021] Figure 4 is a cross-sectional view of the disturbance guide wheel of an embodiment of the present application;

[0022] Figure 5 is Figure 4 a cross-sectional view along A-A in the figure.

[0023] 1, motor shell; 2, stator; 3, rotor; 4, disturbance guide wheel; 5, bearing; 6, paddle; 7, flow passage one; 8, flow passage two; 9, helical angle; 10, arc-shaped slot. DETAILED DESCRIPTION

[0024] The advantages and effects of the present application can be easily understood by those skilled in the art from the description of the specific embodiments of the present application. The present application can also be implemented or applied in other different embodiments, and the details in the description can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0025] The accompanying drawings are referred to in the description of the present application. Figures 1-5 The present application is further described in detail.

[0026] The embodiment of the present application discloses a rim motor with a disturbance guide wheel.

[0027] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , a rim motor with a disturbance guide wheel comprises a motor shell 1, a stator 2 assembly and a rotor 3 assembly, the stator 2 assembly is arranged at both ends of the motor shell 1, the rotor 3 assembly is arranged in the stator 2 assembly through a bearing 5, the rotor 3 assembly is located inside the stator 2 assembly, a paddle 6 is arranged on the rotor 3 assembly, the paddle 6 and the inside of the motor shell 1 form a flow passage one 7 for liquid flow, the rotor 3 assembly comprises a rotor 3 and a rotor 3 motor, the rotor 3 is provided with a disturbance guide wheel 4, and the rotor 3 motor is used to drive the rotor 3 and the disturbance guide wheel 4 to rotate. By arranging the disturbance guide wheel 4, the bearing 5 arranged at both ends of the motor can be lubricated, and small impurities in the liquid can be removed to avoid entering the bearing 5. Small impurities in the air gap between the stator 2 and the rotor 3 are pressed out with the water flow to avoid the rotor 3 from being stuck, and the sliding bearing 5 is ensured to be lubricated with sufficient water flow.

[0028] The cross-sectional shape of the flow passage one 7 is approximately double inverse ellipse, the paddle 6 adopts a propeller, two propellers are arranged, the inside radius of the paddle 6 of the two propellers is greater than the outside radius, the cross-sectional shape thereof is approximately elliptical, the shape of the paddle 6 in the flow passage one 7 is approximately hyperbolic, and the cross-section of the flow passage one 7 not covered by the paddle 6 is approximately double inverse ellipse, that is, the flow passage one 7 has two opposite direction elliptical shapes

[0029] The area relationship of the flow passage one 7 is as follows:

[0030] S = Z / 360 × π × (R 2 / r 2 / a × (R - r)2

[0031] Wherein, S: flow channel area, unit: mm 2 R: guide wheel outer diameter, unit: mm; r: flow channel inner diameter, unit: mm; Z: flow channel number; a, disturbance coefficient (related to flow velocity).

[0032] The flow channel 7 of the double reverse ellipse ensures that the high-speed water flow flows along the designed flow channel 7, prevents the water flow from overflowing in the radial direction, and helps to guide the water flow to form a stable flow pattern in the flow channel 7. The side wall of the flow channel 7 has appropriate curvature to prevent the water flow from overflowing in the radial direction, so as to ensure smooth transition of the water flow and minimize overflow.

[0033] The outer contour of the disturbance guide wheel 4 is provided with a flow channel 8 spaced along the circumference of the disturbance guide wheel 4, and the impurities in the flow channel 7 enter the flow channel 8 and are discharged. The side wall of the flow channel 8 is provided with an elliptical arc-shaped groove 10. The design of the arc-shaped groove 10 helps to reduce the resistance of the fluid in the flow channel 8, so that the impurities can be discharged more smoothly.

[0034] The disturbance guide wheel 4 is provided with a helix angle 9θ in the circumferential direction, and the helix angle 9θ ranges from 35° to 55°. In this embodiment, the helix angle 9θ is 45°. The equal pressure of forward and reverse water flow is ensured, the load fluctuation is avoided, the axial pressure is applied to the water flow, the bearing 5 is ensured to have sufficient water flow lubrication, the complete water film is easily formed when the motor starts, the friction coefficient is reduced; at the same time, the small impurities in the air gap of the stator and rotor 3 are pressed out with the water flow, and the rotor 3 is prevented from being stuck.

[0035] The disturbance guide wheel 4 and the rotor 3 are connected by a double key, which can more effectively transmit torque, improve the reliability and stability of the connection, and ensure the stability and reliability when transmitting torque and bearing load.

[0036] The disturbance guide wheel 4 is made of a magnetic material, and the surface of the disturbance guide wheel 4 is treated to prevent corrosion, so as to improve its service life and reliability. The corrosion treatment can be electroplating, spraying anticorrosive paint, etc., to form a protective layer to isolate air, moisture and other corrosion factors.

[0037] The rotor 3 motor of the present application can be used in forward and reverse directions, and the impurities remaining in the flow channel 8 can be pressed out by forward and reverse rotation, thereby effectively preventing impurities from remaining in the flow channel 8. The present application realizes effective separation of impurities and fluid through the design of the disturbance guide wheel 4 and the flow channel.

[0038] The present application drives the rotor 3, propeller and disturbance guide wheel 4 to rotate simultaneously by the rotor 3 motor, which is compact in structure, saves space, high in efficiency and low in energy consumption. In addition, the disturbance guide wheel 4 can further improve the flow field of the flow channel 7, which is used to improve the propulsion efficiency and reduce noise.

[0039] The principles and implementation manners of the present application are described herein by using specific examples, and the above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred implementation manner of the present application. It should be noted that, due to the limited expression of the text, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principles of the present application, or the above technical features can be combined in an appropriate manner; the improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, shall be regarded as the protection scope of the present application.

Claims

1. A rim motor with a perturbation guide wheel, characterized by: The motor comprises a motor shell, a stator assembly and a rotor assembly, the stator assembly is arranged at both ends of the motor shell, the rotor assembly is arranged at the stator assembly through a bearing, the rotor assembly is located at the inner side of the stator assembly, a flow channel one for liquid flow is formed inside the motor shell, the rotor assembly comprises a rotor and a rotor motor, the rotor is provided with a disturbing guide wheel, the disturbing guide wheel has a flow channel two in flow communication with the flow channel one, and the rotor motor is used to drive the rotor and the disturbing guide wheel to rotate.

2. The rim generator with perturbed guide wheels according to claim 1, characterized in that: The rotor assembly is provided with a paddle, the paddle is located in the flow channel one, the rotor motor can drive the paddle to rotate, and the cross section of the flow channel one is approximately double inverse ellipse.

3. The rim generator with perturbed guide wheels according to claim 2, characterized in that: The area relationship of the flow channel one is as follows: S = Z * π * (R + r) / 2, wherein S is the flow channel area, R is the outer diameter of the guide wheel, r is the inner diameter of the flow channel, Z is the number of flow channels, and a is the disturbance coefficient related to the flow rate. S = Z / 360 x π x (R 2 / - 2 / - 2 The disturbing guide wheel is provided with a helix angle θ in the circumferential direction.

4. The rim generator with perturbed guide wheels of claim 1, wherein: The helix angle θ is in the range of 35°-55°.

5. The rim generator with perturbed guide wheels according to claim 4, characterized in that: The outer contour of the disturbing guide wheel is provided with the flow channel two in fluid communication with the flow channel one along the circumferential direction of the disturbing guide wheel, impurities in the flow channel one enter the flow channel two and are discharged.

6. The rim generator with perturbed guide wheels of claim 1, wherein: The side wall of the flow channel two is provided with an elliptical arc-shaped groove.

7. The rim generator with perturbed guide wheels according to claim 6, characterized in that: The paddle is a four-blade propeller.

8. The rim generator with perturbed guide wheels of claim 2, wherein: ​

Images