Axial flow fan with multi-blade fan blades and air guide cylinder with rotation stopping blades

Abstract

The axial flow fan with the multi-blade fan blades and the air guide barrel with the rotation stopping blades comprises an air guide barrel body, a motor and a fan blade body, the fan blade body is installed in the air guide barrel body and connected with the motor, a plurality of blades are arranged on the fan blade body, and the rotation stopping blades are arranged on the fan blade body. A mounting hole is formed in the circle center of the bottom of the air duct body, and a plurality of rotation stopping blades are arranged at the bottom of the air duct body in a circumferential array mode with the mounting hole as the circle center. The axial flow fan adopting the multi-blade fan blades and the air guide barrel with the rotation stopping blades is large in air volume and air pressure, low in noise, capable of eliminating rotational flow, high in efficiency and the like, suitable for industrial ventilation, building air conditioners, public place heat dissipation and other scenes and has the advantages of being low in noise, high in static pressure efficiency and wide in working condition adaptability.

Description

Technical Field

[0001] This utility model relates to the field of axial flow fans with multi-bladed blades and anti-rotation blades in the air guide tube. Background Technology

[0002] Fan blades and air ducts are widely used in HVAC equipment to guide and optimize airflow. In existing technologies, fan blades typically employ a small number of blades, resulting in uneven airflow distribution and low efficiency, especially prone to generating eddies at high speeds, increasing energy consumption. Furthermore, the structure of air ducts lacks airflow stabilization design, easily leading to airflow turbulence and reducing overall system efficiency.

[0003] The shortcomings of existing technology:

[0004] 1. Insufficient number of blades: Traditional wind turbine blades have a small number of blades (usually 3-6), which cannot fully divide the airflow, resulting in large local pressure loss and low energy efficiency.

[0005] 2. The design of the air duct is simple and the installation adaptability is poor. After the airflow passes through the conventional air duct, it is easy to form a rotating vortex, which affects the operational stability of downstream equipment. The current air duct cannot flexibly adjust the airflow direction and is difficult to adapt to complex ventilation scenarios.

[0006] 3. The air duct has a large deformation during injection molding, making it prone to colliding with the fan blades and affecting its functionality. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the aforementioned problems in the prior art, this utility model provides an axial flow fan with multi-bladed impellers and an air guide tube with anti-rotation blades.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0011] An axial flow fan with multi-bladed impeller and anti-rotation blade guide tube includes an air guide tube body, a motor, and an impeller body.

[0012] The fan blade body is installed inside the air guide tube body and connected to the motor. The fan blade body has multiple blades.

[0013] An installation hole is provided at the center of the bottom of the air guide tube body, and multiple anti-rotation blades are arranged in a circular array around the installation hole at the bottom of the air guide tube body.

[0014] Preferably, the blade is an arc-shaped blade.

[0015] Preferably, the angle between the anti-rotation blade and the inner wall of the air guide tube body is 60-90°.

[0016] Preferably, the air duct is made of ABS.

[0017] Preferably, the height of the anti-rotation blade is 1 / 7 of the height of the air guide tube body.

[0018] Preferably, the fan blade body has 10 blades.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. Reduce operating noise:

[0022] The multi-blade design reduces the load on a single blade by dispersing the impact force of airflow, thereby reducing the noise level. The 10-blade fan rotates at a lower speed than the 6-blade fan at the same air volume, reducing bearing wear and vibration noise, making it suitable for noise-sensitive scenarios.

[0023] 2. Eliminate airflow rotation and reduce energy loss:

[0024] When the blades of an axial flow fan rotate, the airflow will form a rotational motion under the action of the blades. This rotating airflow will generate eddies and frictional resistance in the subsequent flow, resulting in energy loss. The anti-rotation blades convert the rotational kinetic energy of the airflow into static pressure energy, so that the airflow direction is restored to axial flow, reducing the ineffective energy loss caused by rotation.

[0025] 3. Improve static pressure efficiency:

[0026] Multi-bladed fan blades can significantly improve static pressure efficiency. The number of blades is positively correlated with wind pressure. By increasing blade density, kinetic energy is efficiently converted into static pressure energy, reducing energy loss. The air duct body has anti-rotation blades that convert dynamic pressure into static pressure through rectification. The airflow of existing axial fans has a high velocity when it flows out of the impeller, but the direction is chaotic. By adjusting the flow channel shape through anti-rotation blades, the airflow velocity is slowed down and static pressure is increased, thereby improving the static pressure efficiency of the fan.

[0027] 4. Extend the service life of the fan blades:

[0028] The anti-rotation blades on the air guide tube body enhance the strength of the air guide tube, solve the problem of air guide tube deformation, avoid the air guide tube and the blades from scratching and damaging each other, and extend the service life of the blades. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an axial flow fan with multi-bladed blades and an anti-rotation blade guide tube;

[0030] Figure 2 This is a schematic diagram of the air guide duct body.

[0031] Figure 3 This is a schematic diagram of the wind turbine blade.

[0032] [Explanation of Labels in the Attached Image]

[0033] 1. Air duct body;

[0034] 11. Mounting hole; 12. Anti-rotation blade;

[0035] 2. Wind turbine blade body; 21. Blades;

[0036] 3. Motor. Detailed Implementation

[0037] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Please refer to Figures 1 to 3 This utility model provides an axial flow fan with multi-bladed impeller and 12 anti-rotation blades in the air guide tube, including an air guide tube body 1, a motor 3 and an impeller body 2.

[0039] The fan blade body 2 is installed inside the air guide tube body 1 and connected to the motor 3. The fan blade body 2 has multiple blades 21.

[0040] A mounting hole 11 is provided at the center of the bottom of the air guide tube body 1, and multiple anti-rotation blades 12 are arranged in a circular array around the mounting hole 11 at the bottom of the air guide tube body 1.

[0041] This application installs anti-rotation blades 12 inside the air guide tube body 1. When the fan blade body 2 of the axial flow fan rotates, the airflow will form a rotational motion under the action of the blades 21 of the fan blade body 2. This rotating airflow will generate eddies and frictional resistance in subsequent flow, resulting in energy loss. The anti-rotation blades 12 convert the rotational kinetic energy of the airflow into static pressure energy, so that the airflow direction is restored to axial flow, reducing the ineffective energy loss caused by rotation. At the same time, the anti-rotation blades 12 enhance the strength of the air guide tube body 1, solve the deformation problem of the air guide tube body 1, avoid the air guide tube body 1 and the fan blade body 2 from scratching and colliding, and extend the service life of the fan blade.

[0042] In this embodiment, the blade 21 is an arc-shaped blade.

[0043] In this embodiment, the angle between the anti-rotation blade 12 and the inner wall of the air guide tube body 1 is 60-90°.

[0044] In this embodiment, the air duct is made of ABS.

[0045] In this embodiment, the height of the anti-rotation blade 12 is 1 / 7 of the height of the air guide tube body 1.

[0046] In this embodiment, the fan blade body 2 has 10 blades 21. By dispersing the airflow impact force, the load on a single blade 21 is reduced, thereby lowering the noise level. The 10-blade fan rotates at a lower speed than a 6-blade fan under the same airflow, reducing bearing wear and vibration noise, making it suitable for noise-sensitive scenarios. At the same time, the blades 21 adopt an arc-shaped blade design, which can optimize the airflow path and further suppress noise. Multiple blades can significantly improve static pressure efficiency. The number of blades 21 is positively correlated with wind pressure. By increasing the blade density, kinetic energy is efficiently converted into static pressure energy, reducing energy loss. The air guide duct has anti-rotation blades 12, which convert dynamic pressure into static pressure through rectification. The airflow of existing axial flow fans has a high velocity when it flows out of the impeller, but the direction is chaotic. By adjusting the flow channel shape through the anti-rotation blades 12, the airflow velocity is slowed down and the static pressure is increased, thereby improving the static pressure efficiency of the fan.

[0047] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0048] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An axial flow fan with multi-bladed impellers and an anti-rotation blade guide tube, characterized in that, Includes the air duct body, motor, and fan blade body; The fan blade body is installed inside the air guide tube body and connected to the motor. The fan blade body has multiple blades. An installation hole is provided at the center of the bottom of the air guide tube body, and multiple anti-rotation blades are arranged in a circular array around the installation hole at the bottom of the air guide tube body.

2. The axial flow fan with multi-bladed impeller and anti-rotation blade guide tube according to claim 1, characterized in that, The blade is an arc-shaped blade.

3. The axial flow fan with multi-bladed impeller and anti-rotation blade guide tube according to claim 1, characterized in that, The angle between the anti-rotation blade and the inner wall of the air guide tube body is 60-90°.

4. An axial flow fan with multi-bladed impellers and anti-rotation blades in a guide tube according to claim 1, characterized in that, The air duct is made of ABS.

5. An axial flow fan with multi-bladed impeller and anti-rotation blade guide tube according to claim 1, characterized in that, The height of the anti-rotation blade is 1 / 7 of the height of the air guide tube body.

6. An axial flow fan with multi-bladed impellers and anti-rotation blades in a guide tube according to claim 1, characterized in that, The wind turbine blade body has 10 blades.

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