A fan blade structure with a large air output

Abstract

The utility model relates to a fan blade structure with large air volume belongs to fan blade structure technical field, including wheel hub and connecting ring, the outer surface of wheel hub is provided with a plurality of main fan blade that is uniformly arranged, a plurality of main fan blade is uniformly distributed with vice fan blade, the connecting ring is in proper order and penetrates a plurality of main fan blade and a plurality of vice fan blade, a plurality of vice fan blade's bottom is fixed with the connecting bottom plate. This fan blade structure with large air volume, by setting up main fan blade and vice fan blade can effectively improve the overall fan blade number under the condition of not changing the overall size of wheel hub, and because only main fan blade is fixed with wheel hub, the air inlet hole of main fan blade root can keep relatively invariable compared with inserting vice fan blade, thereby guaranteeing the air intake volume, effectively improving the wind-swept area of blade, because the increase of overall blade number, can cut air into more pieces, can effectively reduce the noise, play better mute effect.

Description

Technical Field

[0001] This utility model relates to the field of fan blade structure technology, specifically a fan blade structure with a large air volume. Background Technology

[0002] The fan blade structure is the core component of a fan. Its main function is to convert the rotational kinetic energy provided by the motor into airflow energy, thereby generating directional airflow. Fan blades usually adopt a curved or twisted surface design. Through high-speed rotation, a high-pressure zone is formed on the front side of the blade and a low-pressure zone is formed on the rear side. Driven by the pressure difference, air flows from the high-pressure zone to the low-pressure zone, forming a continuous airflow.

[0003] For example, a Chinese patent (publication number: CN212297019U) discloses a centrifugal fan blade structure, comprising a plurality of blades extending from the outer periphery of a hub. Each of the plurality of blades has a fixed end, a free end, an upper end face, a lower end face, a front end face, and a rear end face. The fixed end and the free end are respectively disposed at opposite ends of the plurality of blades. The fixed end is fixedly connected to the hub. The upper and lower end faces are respectively disposed on the upper and lower sides of the plurality of blades, and the front and rear end faces are respectively disposed on the front and rear sides of the plurality of blades. A thickness is defined between the front and rear end faces, which is between 0.05mm and 0.15mm. The plurality of blades gradually taper from the upper end face to the lower end face, so that there are two inclined angles between the upper and lower end faces, so that the number of the plurality of blades is ≥71. This achieves the effect of reducing the blade thickness and increasing the number of blades, and making the blades less prone to breakage during the demolding process.

[0004] However, due to its inherent structural limitations, the number of fan blades is restricted, and the sweeping area of ​​the blades is smaller, resulting in a lower overall air volume. Therefore, a fan blade structure with a larger air volume is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a fan blade structure with a large air volume, which has the advantages of large air volume and solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fan blade structure with a large air volume, including a hub and a connecting ring. The outer surface of the hub is provided with a plurality of main fan blades arranged in an evenly distributed manner, and secondary fan blades are evenly distributed between the plurality of main fan blades. The connecting ring passes through the plurality of main fan blades and the plurality of secondary fan blades in sequence, and a connecting base plate is fixed to the bottom of the plurality of secondary fan blades.

[0007] Furthermore, all of the plurality of main fan blades and auxiliary fan blades are curved, and all of the plurality of main fan blades and auxiliary fan blades are inclined.

[0008] Furthermore, the length of each of the plurality of main fan blades is longer than that of the secondary fan blades, the top of each of the plurality of secondary fan blades is flush with the top of the plurality of main fan blades, and the bottom of each of the secondary fan blades is longer than that of the main fan blades.

[0009] Furthermore, an air inlet is formed between every two main fan blades, hubs, and connecting base plates, and the connecting base plate is annular in shape.

[0010] Furthermore, the hub is generally circular, with a raised top and an annular groove at the bottom.

[0011] Furthermore, the thickness of each main fan blade is gradually tapering in the elongation direction, and the thickness of each secondary fan blade is also gradually tapering in the elongation direction.

[0012] Furthermore, the hub, multiple main fan blades, connecting ring, and multiple auxiliary fan blades are integrally injection molded.

[0013] Furthermore, the roots of the plurality of auxiliary fan blades are fixed to the connecting base plate, and the plurality of main fan blades are all located above the connecting base plate.

[0014] Compared with the prior art, this utility model provides a fan blade structure with a large air volume, which has the following beneficial effects:

[0015] 1. This fan blade structure with a large air volume can effectively increase the total number of fan blades without changing the overall size of the hub by setting main fan blades and auxiliary fan blades. Furthermore, since only the main fan blade is fixed to the hub, the air intake hole at the root of the main fan blade can remain relatively unchanged compared to when the auxiliary fan blade is inserted, thereby ensuring the air volume while effectively increasing the sweeping area of ​​the blades.

[0016] 2. The fan blade structure with a large air volume can cut the air into more pieces due to the increased number of blades, which can effectively reduce noise and achieve a better quiet effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a diagram showing the connection relationship between the connecting ring and the secondary fan blade of this utility model;

[0019] Figure 3 This is a diagram showing the connection relationship between the connecting base plate and the secondary fan blades of this utility model.

[0020] In the picture: 1. Wheel hub, 2. Main fan blade, 3. Connecting ring, 4. Secondary fan blade, 5. Connecting base plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 3 In this embodiment, a fan blade structure with a large air volume includes a hub 1 and a connecting ring 3. The outer surface of the hub 1 is provided with multiple main fan blades 2 arranged in an evenly distributed manner. Auxiliary fan blades 4 are evenly distributed between the multiple main fan blades 2. By inserting auxiliary fan blades 4 between the main fan blades 2, the number of fan blades can be increased, which can effectively increase the sweeping area of ​​the blades and drive more airflow, which greatly helps the fan's air volume and air pressure. The connecting ring 3 passes through multiple main fan blades 2 and multiple auxiliary fan blades 4 in sequence. A connecting base plate 5 is fixed to the bottom of the multiple auxiliary fan blades 4.

[0023] In addition, the hub 1 is circular in shape, and the circular hub 1 facilitates the connection of multiple main fan blades 2. The top of the hub 1 is convex, and the bottom of the hub 1 has an annular groove.

[0024] In this embodiment, through the synergistic effect of the main fan blade 2 and the auxiliary fan blade 4, as well as the design of the air inlet, more air can enter the fan blade structure and be accelerated out, and the airflow is stable.

[0025] Please refer to it again. Figures 1 to 3 In order to increase the air volume, the main fan blades 2 and the auxiliary fan blades 4 in this embodiment are all curved and tilted. The special design of the main fan blades 2 and the auxiliary fan blades 4 can make the exhaust airflow more uniform and improve the uniformity and stability of the exhaust air.

[0026] In addition, the length of multiple main fan blades 2 is longer than that of the secondary fan blades 4, the top of multiple secondary fan blades 4 is flush with the top of multiple main fan blades 2, and the bottom of each secondary fan blade 4 is longer than that of the main fan blades 2. This structure increases the number of blades without changing the size of the air inlet. Compared with directly adding multiple fan blades, the air inlet is larger and produces more air. An air inlet is formed between every two main fan blades 2, the hub 1 and the connecting base plate 5. The connecting base plate 5 is in the shape of a ring.

[0027] It should be further explained that the thickness of each main fan blade 2 is gradually tapering in the elongation direction, and the thickness of each secondary fan blade 4 is also gradually tapering in the elongation direction. The hub 1, multiple main fan blades 2, connecting ring 3, and multiple secondary fan blades 4 are integrally injection molded. The integral injection molding manufacturing method reduces the number of parts and connection points, and reduces the assembly difficulty and cost. This design enables the fan blade structure to be mass-produced, while ensuring the consistency of product quality, enhancing structural stability, and avoiding loosening and noise. The roots of multiple secondary fan blades 4 are fixed to the connecting base plate 5, and multiple main fan blades 2 are all located above the connecting base plate 5.

[0028] In this embodiment, by optimizing the shape of the main fan blade 2 and the secondary fan blade 4, the air volume can be effectively increased. Combined with increasing the number of fan blades, more airflow is driven, effectively increasing the air volume and air pressure.

[0029] Understandably, this structure has been tested and found that the unit's performance in terms of air volume and air pressure is 10% higher than that of the conventional model. Its heat dissipation performance within the system is also more significant, with an improvement of 10% to 20%, resulting in a remarkable heat dissipation effect.

[0030] The working principle of the above embodiments is as follows:

[0031] When the fan is running, the motor drives the hub 1 to rotate, which in turn drives the main fan blade 2 and the auxiliary fan blade 4 to rotate synchronously. The air inlet formed between each pair of main fan blades 2, hub 1 and connecting base plate 5 plays a key role. Due to the presence of the air inlet, air can enter the fan blade structure through these holes. With the cooperation of the main fan blades 2 and auxiliary fan blades 4, the overall number of fan blades is increased while the original size of the air inlet is maintained, thereby effectively increasing the air volume.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A fan blade structure with a large air output, comprising a hub (1) and a connecting ring (3), characterized in that: The outer surface of the hub (1) is provided with a plurality of main fan blades (2) evenly distributed, and secondary fan blades (4) are evenly distributed between the plurality of main fan blades (2). The connecting ring (3) passes through the plurality of main fan blades (2) and the plurality of secondary fan blades (4) in sequence, and a connecting base plate (5) is fixed to the bottom of the plurality of secondary fan blades (4).

2. The fan blade structure with large air output according to claim 1, characterized in that: The plurality of main fan blades (2) and secondary fan blades (4) are all curved, and the plurality of main fan blades (2) and secondary fan blades (4) are all inclined.

3. The fan blade structure with large air output according to claim 1, characterized in that: The length of each of the plurality of main fan blades (2) is longer than that of the secondary fan blades (4), the top of each of the plurality of secondary fan blades (4) is flush with the top of the plurality of main fan blades (2), and the bottom of each of the secondary fan blades (4) is longer than that of the main fan blades (2).

4. The fan blade structure with large air output according to claim 1, characterized in that: An air inlet is formed between each pair of main fan blades (2), hub (1) and connecting base plate (5), and the connecting base plate (5) is annular.

5. The fan blade structure with large air output according to claim 1, characterized in that: The hub (1) is generally circular, the top of the hub (1) is convex, and the bottom of the hub (1) has an annular groove.

6. The fan blade structure with large air output according to claim 1, characterized in that: The thickness of each main fan blade (2) is gradually reduced in the elongation direction, and the thickness of each secondary fan blade (4) is gradually reduced in the elongation direction.

7. The fan blade structure with large air output according to claim 1, characterized in that: The hub (1), multiple main fan blades (2), connecting ring (3) and multiple auxiliary fan blades (4) are integrally injection molded.

8. The fan blade structure with large air output according to claim 1, characterized in that: The roots of the multiple auxiliary fan blades (4) are fixed to the connecting base plate (5), and the multiple main fan blades (2) are all located above the connecting base plate (5).

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