Low-speed large-air-volume axial flow fan blade
By setting up a rotating hole, rotating disc and other structures on the hub of the axial air blade, and adjusting the angle of the air blades with fixed springs and lifting handles, the problem of limited air volume when rotating at low speed is solved, the effect of generating a large air volume at low speed is achieved, and the practicality of the air blades is improved.
Patent Information
- Application Number
- CN202421885366.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The current axial air blades have limited air volume when rotating at low speeds and cannot be adjusted, which reduces the practicality of the air blades.
A low-speed, high-volume axial flow blade is designed. By setting a rotating hole, rotating disc, connecting shaft, air blade and other structures on the hub, the angle of the air blade is adjusted to adjust the air volume by adjusting the air blade through the wind breaking tip and the weight reduction groove.
When rotating at low speed, the angle of the air blade can be adjusted, the air volume can be increased, and the practicality of the air blade can be improved.
Smart Images
Figure CN223049077U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of axial flow fan blades, in particular to a low-speed and large-air-volume axial flow fan blade. Background Technique
[0002] Axial flow fans are widely used. They are a type of fan in which the air flow direction is the same as the axis of the fan blade. For example, electric fans and the external fans of air conditioners operate in an axial flow manner. The reason for being called "axial flow" is that the gas flows parallel to the axis of the fan. Among them, the axial flow fan blade is the main component of the axial flow fan, and the axial flow fan blade is related to the size of the air volume of the axial flow fan.
[0003] The axial flow fan blade generally includes a hub and fan blades. The existing axial flow fan blades are generally installed on the hub by welding. When it is necessary to adjust the air volume of the axial flow fan blade, only the rotation speed of the fan blade can be adjusted. When the rotation speed of the axial flow fan blade is low, the air volume generated by the fan is limited, and the air volume of the axial flow fan blade at low-speed rotation cannot be adjusted, which reduces the practicability of the axial flow fan blade. Therefore, a low-speed and large-air-volume axial flow fan blade is needed to solve the above problems. Summary of the Utility Model
[0004] The purpose of the present utility model aims to solve at least one of the technical defects.
[0005] For this reason, an object of the present utility model is to provide a low-speed and large-air-volume axial flow fan blade to solve the problems mentioned in the background technique and overcome the deficiencies existing in the prior art.
[0006] To achieve the above object, an embodiment of one aspect of the present utility model provides a low-speed and large-air-volume axial flow fan blade, including a hub. A plurality of rotation holes are opened inside the hub. The inner walls of the plurality of rotation holes are all rotatably connected with rotation discs. One side of each of the plurality of rotation discs is fixedly connected with a connecting shaft. One end of each of the plurality of connecting shafts is fixedly connected with a fan blade. A plurality of fixing insertion holes are opened on the outer surfaces of the plurality of rotation discs. A plurality of guiding holes are opened on one side of the hub. Fixing springs are fixedly connected to the inner walls of the plurality of guiding holes. One end of each of the plurality of fixing springs is fixedly connected with a sealing block. A pulling handle is fixedly connected to one side of each of the plurality of sealing blocks away from the fixing spring. A fixing insertion rod is fixedly connected to one side of each of the plurality of sealing blocks away from the pulling handle. A wind-breaking tip is provided at one end of each of the plurality of fan blades away from the hub. A wind-breaking surface is provided on one side of each of the plurality of fan blades. A plurality of weight-reducing grooves are opened on one side of each of the plurality of fan blades.
[0007] Preferably, according to any of the above solutions, a plurality of operation grooves are opened on one side of the hub. The number of the operation grooves corresponds to that of the guiding holes, and the operation grooves are communicated with the guiding holes.
[0008] Preferably, according to any of the above solutions, the rotating disk is adapted to the size of the rotating hole, the connecting shaft penetrates through the hub and extends to the outside of the hub, and the connecting shaft is rotatably connected to the hub.
[0009] Preferably, according to any of the above solutions, the length of the fixing spring is less than the depth of the guiding hole, the sealing block is slidably connected to the guiding hole, and the diameter of the sealing block is adapted to the diameter of the guiding hole.
[0010] Preferably, according to any of the above solutions, the number of the guiding holes corresponds to the number of the rotating holes, the positions of the guiding holes correspond to the positions of the rotating holes, a part of the fixing insertion rod is located inside the fixing spring, a part of the fixing insertion rod is located inside the rotating hole, the fixing insertion rod is slidably connected to the hub, the position of the fixing insertion rod corresponds to the position of the fixing insertion hole, and the size of the fixing insertion rod is adapted to the size of the fixing insertion hole.
[0011] Preferably, according to any of the above solutions, the weight reduction grooves are located at positions on the blade away from the wind-breaking surface, and a plurality of the weight reduction grooves are evenly distributed on one side of the blade.
[0012] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:
[0013] Through the cooperative setting of the rotating hole, the rotating disk, the connecting shaft, the blade, the fixing insertion hole, the guiding hole, the fixing spring, the sealing block, the lifting handle and the fixing insertion rod, when the rotating speed of the hub is slow, the angle of the blade can be adjusted, the air volume of the axial flow blade can be adjusted by adjusting the angle of the blade, the contact area between the blade and the air during rotation can be reduced through the wind-breaking tip and the wind-breaking surface, and the overall mass of the blade is reduced through the weight reduction grooves, so that the blade can rotate more smoothly, thereby enabling the axial flow blade to still generate a large air volume when the rotating speed is slow, and improving the practicability of the axial flow blade. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural diagram of the present utility model;
[0015] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;
[0016] Figure 3 is a schematic structural diagram of the blade of the present utility model;
[0017] Figure 4 is the present utility model Figure 2 is an enlarged schematic structural diagram of part A in the present utility model.
[0018] In the figure: 1-wheel hub, 2-rotating hole, 3-rotating disk, 4-connecting shaft, 5-fan blade, 6-fixing socket, 7-guide hole, 8-fixing spring, 9-sealing block, 10-lifting handle, 11-fixing plug rod, 12-wind-breaking tip, 13-wind-breaking surface, 14-weight-reducing groove, 15-operating groove. DETAILED DESCRIPTION
[0019] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0020] like Figures 1 to 4 As shown, the utility model provides a low-speed and large-air-volume axial flow fan blade, including a hub 1, a plurality of rotating holes 2 are opened inside the hub 1, the inner walls of the plurality of rotating holes 2 are rotatably connected with rotating disks 3, one side of the plurality of rotating disks 3 are fixedly connected with connecting shafts 4, one end of the plurality of connecting shafts 4 are fixedly connected with fan blades 5, the fan blades 5 are fitted with the outer surface of the hub 1, and the fan blades 5 are slidably connected with the hub 1, a plurality of fixed plug holes 6 are opened on the outer surfaces of the plurality of rotating disks 3, a plurality of guide holes 7 are opened on one side of the hub 1, a plurality of fixing springs 8 are fixedly connected to the inner walls of the plurality of guide holes 7, one end of the plurality of fixing springs 8 are fixedly connected with sealing blocks 9, a plurality of sealing blocks 9 are fixedly connected with lifting handles 10 on one side away from the fixing springs 8, a plurality of sealing blocks 9 are fixedly connected with fixing plug rods 11 on one side away from the lifting handles 10, a plurality of fan blades 5 are provided with wind-breaking tips 12 on one end away from the hub 1, and a plurality of fan blades 5 are provided with wind-breaking tips on one side. The surface 13, the wind-breaking tip 12 and the wind-breaking surface 13 are all in the shape of a knife edge, which reduces the contact area between the fan blade 5 and the airflow, so that the fan blade 5 can rotate smoothly. Several weight-reducing grooves 14 are provided on one side of several fan blades 5. When the rotation speed of the axial flow fan blade is low, the lifting handle 10 can be pulled to move the sealing block 9 out of the inside of the guide hole 7, and the fixing plug rod 11 can be moved out of the inside of a fixed socket 6. At this time, the fixing spring 8 is in a stretched state, and the fan blade 5 can be rotated at this time. As the fan blade 5 rotates, the rotating disk 3 is rotated under the action of the connecting shaft 4, and the fan blade 5 is adjusted to a suitable angle. Then the lifting handle 10 is slowly released, and the fixing plug rod 11 is inserted into the inside of the fixed socket 6 at a suitable position under the reaction force of the fixing spring 8, thereby fixing the rotating disk 3, thereby adjusting the fan blade 5 to a suitable angle. At this time, the wind resistance is adjusted to increase the air volume generated by the adjustment fan blade 5, so that the axial flow fan blade can generate a larger air volume at a lower rotation speed.
[0021] As an optional technical solution of the utility model, a plurality of operating grooves 15 are opened on one side of the wheel hub 1, and the number of the operating grooves 15 corresponds to the number of the guide holes 7. The operating grooves 15 are connected to the guide holes 7, and the fixing springs 8 inside the guide holes 7 are easily installed and removed through the operating grooves 15.
[0022] As an alternative technical solution of the present utility model, the size of the rotating disc 3 is adapted to that of the rotating hole 2. The connecting shaft 4 penetrates through the hub 1 and extends to the outside of the hub 1. The connecting shaft 4 is rotatably connected to the hub 1, so that the rotating disc 3 and the connecting shaft 4 can rotate smoothly.
[0023] As an alternative technical solution of the present utility model, the length of the fixing spring 8 is less than the depth of the guiding hole 7. The sealing block 9 is slidably connected to the guiding hole 7. The diameter of the sealing block 9 is adapted to that of the guiding hole 7, so that the sealing block 9 can move smoothly along the direction of the guiding hole 7 and seal the guiding hole 7 through the sealing block 9.
[0024] As an alternative technical solution of the present utility model, the number of the guiding holes 7 corresponds to that of the rotating holes 2, and the positions of the guiding holes 7 correspond to those of the rotating holes 2. A part of the fixing plug 11 is located inside the fixing spring 8, and a part of the fixing plug 11 is located inside the rotating hole 2. The fixing plug 11 is slidably connected to the hub 1. The position of the fixing plug 11 corresponds to that of the fixing socket 6, and the size of the fixing plug 11 is adapted to that of the fixing socket 6, so that the fixing plug 11 can move smoothly and insert into the fixing socket 6.
[0025] As an alternative technical solution of the present utility model, the weight-reducing grooves 14 are located on the wind blade 5 at a position away from the wind-breaking surface 13. A plurality of weight-reducing grooves 14 are evenly distributed on one side of the wind blade 5, avoiding the situation of local uneven sinking of the wind blade 5.
[0026] The working principle of the low-speed large-volume axial-flow wind blade provided by the present utility model is as follows: when the rotational speed of the axial-flow wind blade is low, the lifting handle 10 can be pulled to move the sealing block 9 out of the guiding hole 7 and move the fixing plug 11 out of one fixing socket 6. At this time, the fixing spring 8 is in a stretched state. At this time, the wind blade 5 can be rotated. As the wind blade 5 rotates, the rotating disc 3 is rotated under the action of the connecting shaft 4 to adjust the wind blade 5 to an appropriate angle. Then the lifting handle 10 is slowly released, and the fixing plug 11 is inserted into the fixing socket 6 at an appropriate position under the reaction force of the fixing spring 8, so as to fix the rotating disc 3, thereby adjusting the wind blade 5 to an appropriate angle. At this time, the air volume generated by the adjusting wind blade 5 is increased by adjusting the wind resistance.
[0027] In summary, for this low-speed and large-volume axial-flow fan blade, through the cooperative setting of the rotation hole 2, the rotating disk 3, the connecting shaft 4, the fan blade 5, the fixed insertion hole 6, the guiding hole 7, the fixed spring 8, the sealing block 9, the lifting handle 10 and the fixed insertion rod 11, the angle of the fan blade 5 can be adjusted when the rotation speed of the hub 1 is slow. By adjusting the angle of the fan blade 5, the air volume of this axial-flow fan blade can be adjusted. And through the wind-breaking tip 12 and the wind-breaking surface 13, the contact area between the fan blade 5 and the air during rotation can be reduced, and the overall mass of the fan blade 5 is reduced through the weight-reducing groove 14, enabling the fan blade 5 to rotate more smoothly. As a result, this axial-flow fan blade can still generate a large air volume when the rotation speed is slow, improving the practicality of this axial-flow fan blade.
Claims
1. A low-speed, high-air-volume axial-flow fan blade, characterized in that: The invention comprises a wheel hub (1), wherein a plurality of rotating holes (2) are provided inside the wheel hub (1), the inner walls of the plurality of rotating holes (2) are rotatably connected to rotating disks (3), one side of the plurality of rotating disks (3) are fixedly connected to connecting shafts (4), one end of the plurality of connecting shafts (4) are fixedly connected to fan blades (5), the outer surfaces of the plurality of rotating disks (3) are provided with a plurality of fixed insertion holes (6), one side of the wheel hub (1) is provided with a plurality of guide holes (7), and the inner walls of the plurality of guide holes (7) are fixedly connected to fixing springs (8) One end of a plurality of the fixing springs (8) is fixedly connected to a sealing block (9), a side of a plurality of the sealing blocks (9) away from the fixing spring (8) is fixedly connected to a lifting handle (10), a side of a plurality of the sealing blocks (9) away from the lifting handle (10) is fixedly connected to a fixing plug rod (11), a wind-breaking tip (12) is provided at one end of a plurality of the fan blades (5) away from the wheel hub (1), a wind-breaking surface (13) is provided on one side of a plurality of the fan blades (5), and a plurality of weight-reducing grooves (14) are provided on one side of a plurality of the fan blades (5).
2. The low-speed and high-air-volume axial flow fan blade according to claim 1, characterized in that: A plurality of operating grooves (15) are provided on one side of the wheel hub (1), the number of the operating grooves (15) corresponds to the number of the guide holes (7), and the operating grooves (15) are communicated with the guide holes (7).
3. The low-speed and high-air-volume axial flow fan blade according to claim 2, characterized in that: The size of the rotating disk (3) is adapted to that of the rotating hole (2); the connecting shaft (4) penetrates the wheel hub (1) and extends to the outside of the wheel hub (1); and the connecting shaft (4) is rotatably connected to the wheel hub (1).
4. The low-speed and high-air-volume axial flow fan blade according to claim 3, characterized in that: The length of the fixing spring (8) is smaller than the depth of the guide hole (7), the sealing block (9) is slidably connected to the guide hole (7), and the diameter of the sealing block (9) is matched to the diameter of the guide hole (7).
5. The low-speed and high-air-volume axial flow fan blade according to claim 4, characterized in that: The number of the guide holes (7) corresponds to that of the rotating holes (2), the positions of the guide holes (7) correspond to those of the rotating holes (2), a portion of the fixed plug rod (11) is located inside the fixed spring (8), a portion of the fixed plug rod (11) is located inside the rotating hole (2), the fixed plug rod (11) is slidably connected to the wheel hub (1), the positions of the fixed plug rod (11) correspond to those of the fixed plug hole (6), and the sizes of the fixed plug rod (11) and the fixed plug hole (6) are adapted to each other.
6. The low-speed and high-air-volume axial flow fan blade according to claim 5, characterized in that: The weight-reducing groove (14) is located on the fan blade (5) at a position away from the wind-breaking surface (13), and a plurality of the weight-reducing grooves (14) are evenly distributed on one side of the fan blade (5).