Electric duct model convenient to install
By optimizing the structural design of the electric duct, the problem of energy loss caused by uneven airflow was solved, achieving more efficient energy utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU SHENHANG TECHNOLOGY CO LTD
- Filing Date
- 2025-03-25
- Publication Date
- 2026-05-12
AI Technical Summary
When existing electric ducts are in use, the airflow at the duct outlet is relatively chaotic, resulting in energy loss and waste.
A structure including a channel wall, support plate, air outlet ring, rectifier and rectifier cone is designed to optimize airflow and improve installation convenience and stability through clamping components and limiting guard plates.
The airflow around the exhaust vent was optimized, reducing energy loss, increasing the aircraft's high-speed thrust, and reducing energy waste.
Smart Images

Figure CN224232274U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of installation technology and relates to an electric duct model that is easy to install. Background Technology
[0002] An electric ducted propulsion system is a type of propulsion system that incorporates a fan within a nacelle with inlets and outlets. It is typically used as an aircraft propulsion system, where the fan accelerates airflow to generate thrust, while the duct guides and concentrates the airflow in front of the fan and diffuses the airflow behind the fan to the outside.
[0003] Electric ducted fans (EMFs) replace the traditional ducted fan engines in aircraft with electric motors, resulting in faster system response, lower noise pollution, and more flexible transmission system layouts. Based on the principles of high efficiency, energy saving, and environmental safety, the design of using electric motors to drive ducted fans to generate flight propulsion will significantly improve the environmental friendliness, economy, and reliability of aircraft.
[0004] When existing electric ducts are in use, the airflow at the duct outlet is relatively chaotic, which will cause a certain amount of energy loss and waste of energy during the flight. Utility Model Content
[0005] The technical problem this invention aims to solve is that, in the operation of existing electric ducts, the airflow at the duct outlet is relatively chaotic, which leads to a certain amount of energy loss and waste of energy during aircraft flight.
[0006] This utility model discloses an easy-to-install electric duct model, comprising a duct wall, multiple sets of first support plates fixed to the inner side of the duct wall, motor columns fixed to the ends of the multiple sets of first support plates, an air outlet ring fixed to the end of the duct wall, a gentle slope fixed at the connection between the air outlet ring and the duct wall, multiple sets of second support plates fixed to the middle of the air outlet ring, a rectifier shroud fixed to the end of the second support plates, a rectifier cone fixed to the end of the motor column, a motor cavity opened in the middle of the motor column, a motor slidably connected in the middle of the motor cavity, a support assembly disposed inside the motor cavity, a clamping assembly disposed at the end of the motor, a motor cover plate rotatably connected in the middle of the motor column, and a protective assembly disposed in the middle of the motor cover plate.
[0007] The protection component includes a circular groove, a small spring, a connecting post, and a push plate. The motor has a circular groove in the middle, a small spring is fixed inside the circular groove, a connecting post is fixed to the end of the small spring, the connecting post is slidably connected to the circular groove, and a push plate is fixed to the middle of the connecting post.
[0008] The clamping assembly includes a transmission shaft and a sleeve groove. The transmission shaft is fixedly connected to the output end of the motor, and a sleeve groove is provided at the end of the transmission shaft.
[0009] The air outlet ring has a sliding groove in the middle, and multiple sets of spring rods are fixedly connected to the middle of the sliding groove. Each set of spring rods has a limit plate fixedly connected to its end, and the limit plate is slidably connected to the sliding groove.
[0010] The limiting guard plate has a slot in the middle, and a retaining ring is slidably connected in the middle of the slot.
[0011] Multiple sets of clamping plates are fixedly connected to the middle of the gentle slope surface, and a spring column is fixedly connected to the middle of the gentle slope surface. The spring column is located inside the multiple sets of gentle slope surfaces and is slidably connected to the end of the second support plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are: this structural design can make the structure at the air outlet ring at the end of the duct more aesthetically pleasing, and can optimize the flow of air in the air outlet ring, reduce energy loss, improve the high-speed thrust of the aircraft, and thus reduce energy waste during flight. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a partial sectional view of this utility model.
[0015] Figure 3 This is the front sectional view of this utility model.
[0016] Figure 4 This is a schematic diagram of the transmission shaft in this utility model.
[0017] Figure 5 This utility model Figure 2 Enlarged view of point A.
[0018] In the diagram: 1. Driveway wall; 2. First support plate; 3. Motor column; 4. Second support plate; 5. Fairing; 6. Fairing cone; 7. Gentle slope; 8. Air outlet ring; 9. Motor cavity; 10. Motor; 18. Transmission shaft; 19. Slot; 20. Motor cover plate; 21. Circular groove; 22. Small spring; 23. Connecting column; 24. Push plate; 25. Spring rod; 26. Limiting guard plate; 27. Slot; 28. Snap ring; 29. Snap plate; 30. Spring column; 31. Slide groove. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0022] Example 1
[0023] like Figures 1-4 As shown, the system includes a channel wall 1, with multiple sets of first support plates 2 fixedly connected to the inner side of the middle section of the channel wall 1. Motor columns 3 are fixedly connected to the ends of the multiple sets of first support plates 2. An air outlet ring 8 is fixedly connected to the end of the channel wall 1. A gentle slope surface 7 is fixedly connected at the connection between the air outlet ring 8 and the channel wall 1. Multiple sets of second support plates 4 are fixedly connected to the middle of the air outlet ring 8. A rectifier shroud 5 is fixedly connected to the end of the second support plate 4. A rectifier cone 6 is fixedly connected to the end of the motor column 3. A motor cavity 9 is opened in the middle of the motor column 3. A motor 10 is slidably connected in the middle of the motor cavity 9. A support assembly is provided inside the motor cavity 9. A clamping assembly is provided at the end of the motor 10. A motor cover plate 20 is rotatably connected in the middle of the motor column 3. A protective assembly is provided in the middle of the motor cover plate 20.
[0024] During operation, the electric motor 10 can be activated, allowing airflow to enter the interior of the duct wall 1 from its tail end. The airflow then flows within the duct wall 1, guided by the flow-guiding cone 6. Part of the airflow flows towards the top of the fairing 5, while another part flows into the interior of the fairing 5. Finally, the gas is discharged at the outlet ring 8. The pressure at the tail end of the duct wall 1 must be greater than the pressure at the outlet ring 8 to allow airflow to flow from the tail end of the duct wall 1 to the outlet ring 8. This structural design makes the structure at the outlet ring 8 at the end of the duct more aesthetically pleasing and optimizes the airflow within the outlet ring 8, reducing energy loss and increasing the high-speed thrust of the aircraft, thereby reducing energy waste during flight.
[0025] The protective assembly includes a circular groove 21, a small spring 22, a connecting post 23, and a push plate 24. The motor 10 has a circular groove 21 in the middle. A small spring 22 is fixed inside the circular groove 21. A connecting post 23 is fixed at the end of the small spring 22. The connecting post 23 is slidably connected to the circular groove 21. A push plate 24 is fixed in the middle of the connecting post 23.
[0026] After the motor 10 is placed inside the motor cavity 9, the motor cover 20 can be rotated to protect the motor 10. Then, the push plate 24 can be pulled to compress the small spring 22 inside the circular groove 21. After the motor cover 20 and the motor column 3 are in contact, the pull on the push plate 24 can be released. Then, the end of the connecting column 23 is placed inside the circular groove 21 in the middle of the motor column 3 to fix the motor cover 20. This process can protect the motor cover 20 after it is placed inside the motor cavity 9, reducing the possibility of the motor 10 being affected by external factors during operation. When it is necessary to remove the motor 10 from the motor cavity 9, the motor cover 20 can be opened from the middle of the motor column 3 by pulling the push plate 24.
[0027] The clamping assembly includes a transmission shaft 18 and a sleeve groove 19. The output end of the motor 10 is fixedly connected to the transmission shaft 18, and the end of the transmission shaft 18 is provided with a sleeve groove 19.
[0028] After placing the motor 10 inside the motor cavity 9, the transmission shaft 18 can be connected to the rotating shaft inside the motor column 3. At this time, the transmission shaft 18 and the rotating shaft can be snapped together through the sleeve groove 19. This process can reduce the situation where the motor 10 runs dry due to unstable transmission connection when the motor 10 is working, thereby improving the efficiency of disassembling and installing the motor 10.
[0029] Example 2
[0030] like Figures 1-5 As shown, a sliding groove 31 is provided in the middle of the air outlet ring 8. Multiple sets of spring rods 25 are fixedly connected to the middle of the sliding groove 31. Limiting guard plates 26 are fixedly connected to the ends of the multiple sets of spring rods 25. The limiting guard plates 26 are slidably connected to the sliding groove 31.
[0031] When it is necessary to fix the fairing 5 to the end of the duct wall 1, the second support plate 4 can be used to initially fix the fairing 5. Then, the second support plate 4 can be placed in the middle of the air outlet ring 8. Next, the fairing 5 can be pressed into the duct wall 1, which will cause the spring rod 25 to retract. Then, the second support plate 4 can pass over the limiting guard plate 26 and contact the gentle slope surface 7. At this time, the limiting guard plate 26 can be ejected from the inside of the slide groove 31 to the outside under the action of the spring rod 25, which can fix the second support plate 4. This process can be used to fix the second support plate 4 through the limiting guard plate 26 when the fairing 5 needs to be installed, thereby improving the convenience of installing the fairing 5.
[0032] The limiting guard plate 26 has a slot 27 in the middle, and a retaining ring 28 is slidably connected in the middle of the slot 27.
[0033] After the second support piece 4 is fixed by the limiting guard plate 26, the retaining ring 28 can be placed in the middle of the retaining groove 27. Then, the retaining ring 28 can be used to connect and fix multiple sets of limiting guard plates 26. This process can reduce the occurrence of the limiting guard plate 26 retracting into the slide groove 31 after the second support piece 4 is fixed by the limiting guard plate 26.
[0034] Multiple sets of clamping plates 29 are fixedly connected to the middle of the gentle slope surface 7, and a spring column 30 is fixedly connected to the middle of the gentle slope surface 7. The spring column 30 is located inside the multiple sets of gentle slope surfaces 7 and is slidably connected to the end of the second support plate 4.
[0035] When the second support plate 4 is placed in the middle of the tunnel wall 1, the clamping plate 29 can be used to clamp and fix the second support plate 4, and then the end of the second support plate 4 can be supported by the spring column 30. This process can reduce the rotation of the second support plate 4 in the middle of the tunnel wall 1, thereby making the fairing 5 more stable during operation.
[0036] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.
Claims
1. A model of an easily installed electric duct, characterized in that: The system includes a driveway wall (1), with multiple sets of first support plates (2) fixedly connected to the inner side of the middle section of the driveway wall (1). A motor column (3) is fixedly connected to the end of the multiple sets of first support plates (2). An air outlet ring (8) is fixedly connected to the end of the driveway wall (1). A gentle slope (7) is fixedly connected at the connection between the air outlet ring (8) and the driveway wall (1). Multiple sets of second support plates (4) are fixedly connected to the middle section of the air outlet ring (8). A rectifier cover (5) is fixedly connected to the end of the second support plate (4). A rectifier cone (6) is fixedly connected to the end of the motor column (3). A motor cavity (9) is opened in the middle of the motor column (3). A motor (10) is slidably connected in the middle of the motor cavity (9). A support component is provided inside the motor cavity (9). A clamping component is provided at the end of the motor (10). A motor cover plate (20) is rotatably connected in the middle of the motor column (3). A protective component is provided in the middle of the motor cover plate (20).
2. The easily installable electric duct model according to claim 1, characterized in that: The protective component includes a circular groove (21), a small spring (22), a connecting post (23), and a push plate (24). The motor (10) has a circular groove (21) in the middle. A small spring (22) is fixed inside the circular groove (21). A connecting post (23) is fixed at the end of the small spring (22). The connecting post (23) is slidably connected to the circular groove (21). A push plate (24) is fixed in the middle of the connecting post (23).
3. The easily installable electric duct model according to claim 1, characterized in that: The clamping assembly includes a transmission shaft (18) and a sleeve groove (19). The output end of the motor (10) is fixedly connected to the transmission shaft (18), and the end of the transmission shaft (18) is provided with a sleeve groove (19).
4. The easily installable electric duct model according to claim 1, characterized in that: The air outlet ring (8) has a groove (31) in the middle. Multiple sets of spring rods (25) are fixed in the middle of the groove (31). Limiting guards (26) are fixed at the ends of the multiple sets of spring rods (25). The limiting guards (26) are slidably connected to the groove (31).
5. The easily installable electric duct model according to claim 4, characterized in that: The limiting guard plate (26) has a slot (27) in the middle, and a retaining ring (28) is slidably connected in the middle of the slot (27).
6. The easily installable electric duct model according to claim 1, characterized in that: Multiple sets of clamping plates (29) are fixedly connected to the middle of the gentle slope surface (7), and a spring column (30) is fixedly connected to the middle of the gentle slope surface (7). The spring column (30) is located inside the multiple sets of gentle slope surfaces (7) and is slidably connected to the end of the second support plate (4).