Lightweight unmanned aerial vehicle ducted propeller protection ring

Abstract

The utility model discloses a light unmanned plane culvert type propeller protection circle, including a plurality of culverts and a plurality of first connecting part, through setting up a plurality of culverts are annular pipeline structure, every culvert includes the lip and diffusion port of integrated connection, the inner diameter of this lip gradually reduces from top to bottom, the outer diameter of this lip also gradually reduces from top to bottom, the diffusion port sets up below the lip, the inner diameter of this diffusion port gradually increases from top to bottom, the outer diameter of this diffusion port keeps constant from top to bottom, and the propeller protection circle of this structure can effectively increase the air inlet pressure, effectively reduce the air flow resistance, improve the force effect and thrust of propeller, improve the flight performance of unmanned plane, promote the attitude control ability of unmanned plane, is favorable to reduce the weight of unmanned plane, is applicable to the light design of unmanned plane to improve the quality of unmanned plane, is more competitive, promotes the experience of user, satisfies the present demand.

Description

Technical Field

[0001] This utility model relates to the field of drone propeller protection rings, and in particular to a lightweight drone ducted propeller protection ring. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are a general term for unmanned aerial vehicles controlled by radio remote control or their own programmed control devices. They require no human passengers and can fly via remote control or pre-programmed instructions, enabling them to perform high-risk or repetitive tasks. UAVs offer many advantages: small size, low cost; labor-saving and easy operation; flexibility and efficiency, among others.

[0003] Drones can be classified by purpose into: military-grade drones, civilian consumer-grade drones, and civilian industrial-grade drones; by flight platform configuration into: fixed-wing drones, rotary-wing drones, unmanned helicopters, unmanned airships, paragliding drones, flapping-wing drones, etc.; and by mission altitude into: ultra-low-altitude drones, low-altitude drones, medium-altitude drones, high-altitude drones, and ultra-high-altitude drones.

[0004] Drones are widely used in fields such as aerial photography, agriculture, plant protection, mini selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, news reporting, power line inspection, disaster relief, film and television shooting, and creating romance.

[0005] Drones typically feature a propeller guard ring to protect the propeller. This ring usually consists of multiple cylindrical annular tubes. While this structure is relatively simple and provides some protection, during flight, the low intake pressure and high air resistance of the guard ring result in low propeller efficiency, low thrust, poor flight performance, poor attitude control, and overall poor drone quality. This makes the drone less competitive, provides a poor user experience, and fails to meet current requirements. Therefore, it is necessary to research a new technical solution to improve the current propeller guard ring. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a lightweight ducted propeller protection ring for drones. This effectively solves the problems in the existing technology where, during drone flight, the propeller protection ring has low intake pressure and high airflow resistance, resulting in low propeller efficiency, low propeller thrust, poor drone flight performance, poor attitude control, poor drone quality, lack of competitiveness, and poor user experience.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A lightweight ducted propeller protection ring for unmanned aerial vehicles (UAVs) includes multiple ducts and multiple first connecting parts. Each duct is an annular pipe structure, and each duct includes an integrally formed lip and a diffuser. The inner diameter of the lip gradually decreases from top to bottom, and the outer diameter of the lip also gradually decreases from top to bottom, effectively increasing the intake pressure. The diffuser is located below the lip, and its inner diameter gradually increases from top to bottom, while its outer diameter remains constant from top to bottom, effectively reducing airflow resistance. Each first connecting part is located between two adjacent ducts.

[0009] As a preferred embodiment, the ratio of the height of the lip to the height of the diffuser is 5:3, which further increases the intake pressure and reduces airflow resistance, thereby improving the propeller's power efficiency and thrust.

[0010] As a preferred embodiment, the ratio of the maximum to the minimum inner diameter of the lip is 15:13, which is beneficial for further increasing the intake pressure.

[0011] As a preferred embodiment, the ratio of the maximum to the minimum inner diameter of the diffuser is 14:13, which helps to further reduce airflow resistance.

[0012] As a preferred option, the aspect ratio of the ducted propeller protection ring of the lightweight UAV is 8:1, which effectively reduces induced drag, optimizes aerodynamic efficiency, and improves endurance.

[0013] As a preferred embodiment, the plurality of ducts and the plurality of first connecting parts are all made of carbon fiber, which has high strength, light weight, and good corrosion resistance and high temperature resistance.

[0014] As a preferred embodiment, the number of ducts is even, and correspondingly, the number of first connecting parts is also even, which is beneficial to improving flight stability and balance.

[0015] As a preferred embodiment, there are four ducts, arranged symmetrically in pairs. Correspondingly, there are also four first connecting parts, which are respectively arranged between two adjacent ducts. The upper and lower surfaces of each first connecting part are formed with positioning holes for positioning with external parts.

[0016] As a preferred embodiment, the positioning hole has a square structure.

[0017] As a preferred embodiment, a plurality of second connecting parts are further provided, each of which is an arc-shaped structure. Each second connecting part is located between two adjacent ducts and is situated outside the corresponding first connecting part.

[0018] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0019] By designing multiple annular ducts, each duct including an integrally formed lip and diffuser, the inner diameter and outer diameter of the lip gradually decrease from top to bottom. The diffuser, located below the lip, has an inner diameter that gradually increases from top to bottom while its outer diameter remains constant. This propeller protection ring structure effectively increases intake pressure, reduces airflow resistance, improves propeller efficiency and thrust, enhances drone flight performance, improves attitude control, reduces drone weight, and facilitates lightweight drone design, thereby improving drone quality, competitiveness, and user experience, and meeting current needs.

[0020] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present utility model;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of another preferred embodiment of the present utility model;

[0023] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention;

[0024] Figure 4 yes Figure 3 An enlarged view of position A in the middle.

[0025] Explanation of reference numerals in the attached diagram:

[0026] 10. Culvert 11. Lip and Mouth

[0027] 12. Diffuser port; 20. First connecting part

[0028] 21. Positioning hole 30. Second connecting part

[0029] Direction of airflow B Detailed Implementation

[0030] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a plurality of ducts 10 and a plurality of first connecting portions 20.

[0031] The multiple ducts 10 are all annular pipe structures. Each duct 10 includes an integrally formed lip 11 and diffuser 12. The inner diameter of the lip 11 gradually decreases from top to bottom, and the outer diameter of the lip 11 also gradually decreases from top to bottom, effectively increasing the intake pressure. The diffuser 12 is located below the lip 11. The inner diameter of the diffuser 12 gradually increases from top to bottom, and the outer diameter of the diffuser 12 remains unchanged from top to bottom, effectively reducing airflow resistance.

[0032] In this embodiment, the height ratio of the lip 11 to the diffuser 12 is 5:3, which further increases the intake pressure and reduces airflow resistance, thereby improving the propeller's power efficiency and thrust. The ratio of the maximum to minimum inner diameter of the lip 11 is 15:13, which is beneficial for further increasing the intake pressure. The ratio of the maximum to minimum inner diameter of the diffuser 12 is 14:13, which is beneficial for further reducing airflow resistance. The aspect ratio of the lightweight UAV ducted propeller protection ring is 8:1, which effectively reduces induced drag, optimizes aerodynamic efficiency, and improves endurance. The multiple ducts 10 are made of carbon fiber, which has high strength, light weight, and good corrosion resistance and high temperature resistance. The number of ducts 10 is even, which is beneficial for improving flight stability and balance. There are four ducts 10, with each pair of ducts 10 arranged symmetrically on both sides.

[0033] Each first connecting part 20 is disposed between two adjacent ducts 10; in this embodiment, the plurality of first connecting parts 20 are made of carbon fiber, which has high strength, light weight, and good corrosion resistance and high temperature resistance; there is an even number of first connecting parts 20; there are four first connecting parts 20, which are respectively disposed between two adjacent ducts 10, and each first connecting part 20 has a positioning hole 21 formed through its upper and lower surfaces for positioning with external parts; specifically, the positioning hole 21 has a square structure.

[0034] A plurality of second connecting portions 30 are further provided, each of which is an arc-shaped structure. Each second connecting portion 30 is disposed between two adjacent ducts 10 and is located outside the corresponding first connecting portion 20; specifically, there are four second connecting portions 30.

[0035] The assembly and usage process of this embodiment is described in detail below:

[0036] During assembly, four propellers are installed into the four ducts 10 of the lightweight drone ducted propeller protection ring. The propeller tips are positioned at the boundary between the lip 11 and the diffuser 12 of the duct 10, and the distance from the propeller tip to the inner wall of the duct 10 is 1 mm. The positioning hole 21 of the first connecting part 20 on the protection ring is used for positioning with external parts.

[0037] When using the drone, start the drone flight; the airflow direction is from top to bottom (e.g., ...). Figure 4 As shown in B); During the flight of the UAV, the structure of the lip 11 and diffuser 12 in this protective ring effectively increases the intake pressure and reduces the airflow resistance, thereby improving the propeller's power efficiency and thrust. This utility model can increase the thrust by 15% and improve the quality of the product.

[0038] Compared to previous drones, drones with this protective ring have a smaller side area, resulting in less drag during tilted flight, improved flight efficiency, less susceptibility to external airflow interference, enhanced attitude control, and prevention of loss of control risks.

[0039] The key design feature of this utility model is:

[0040] By designing multiple annular ducts, each duct including an integrally formed lip and diffuser, the inner diameter and outer diameter of the lip gradually decrease from top to bottom. The diffuser, located below the lip, has an inner diameter that gradually increases from top to bottom while its outer diameter remains constant. This propeller protection ring structure effectively increases intake pressure, reduces airflow resistance, improves propeller efficiency and thrust, enhances drone flight performance, improves attitude control, reduces drone weight, and facilitates lightweight drone design, thereby improving drone quality, competitiveness, and user experience, and meeting current needs.

[0041] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A lightweight ducted propeller protection ring for unmanned aerial vehicles (UAVs), characterized in that: It includes multiple culverts and multiple first connecting parts; the multiple culverts are all annular pipe structures, each culvert includes an integrally formed lip and a diffuser, the inner diameter of the lip gradually decreases from top to bottom, the outer diameter of the lip also gradually decreases from top to bottom, the diffuser is located below the lip, the inner diameter of the diffuser gradually increases from top to bottom, and the outer diameter of the diffuser remains unchanged from top to bottom; each first connecting part is located between two adjacent culverts.

2. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 1, characterized in that: The ratio of the height of the lip opening to the height of the diffuser opening is 5:

3.

3. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 1, characterized in that: The ratio of the maximum to the minimum inner diameter of the lip is 15:

13.

4. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 1, characterized in that: The ratio of the maximum to the minimum inner diameter of the diffuser is 14:

13.

5. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 1, characterized in that: The aspect ratio of the ducted propeller protection ring of the lightweight UAV is 8:

1.

6. The lightweight UAV ducted propeller protection ring according to claim 1, characterized in that: All of the multiple ducts and multiple first connecting parts are made of carbon fiber.

7. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 1, characterized in that: The number of ducts is even, and correspondingly, the number of first connecting parts is also even.

8. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 7, characterized in that: There are four ducts, arranged symmetrically in pairs. Correspondingly, there are also four first connecting parts, which are respectively arranged between two adjacent ducts. The upper and lower surfaces of each first connecting part are formed with positioning holes for positioning with external parts.

9. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 8, characterized in that: The positioning hole has a square structure.

10. The lightweight ducted propeller protection ring for unmanned aerial vehicles according to claim 1, characterized in that: The system further includes multiple second connecting parts, each of which is an arc-shaped structure. Each second connecting part is located between two adjacent ducts and outside the corresponding first connecting part.

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