Blower blade structure

Abstract

A blower blade structure includes a rotating body, first blades, and a secondary impeller assembly. The rotating body includes a hub and a blade tray, with the blade tray fitted onto the hub and its center coinciding with the hub's rotation axis. Multiple first blades are arranged in a circular array along the blade tray, and each first blade is fixedly connected to the blade tray. The secondary impeller assembly is detachably connected to the rotating body. By setting a blade support and arranging multiple second blades in a circular array on the blade support, with the second blades positioned between adjacent first blades, the total number of blades can be increased through combination without integral molding, thereby optimizing the airflow cutting effect. This solves the problems of difficult mold making and limited mass production of traditional integrally molded multi-blade structures, reducing manufacturing costs.

Description

Blower blade structure Technical Field

[0001] This invention relates to the field of blower blade technology, specifically to a blower blade structure. Prior Technology

[0002] In various products requiring heat dissipation, such as laptops, automotive equipment, and graphics cards, the fan is a core heat dissipation component, and its performance directly affects the product's operational stability. To increase fan airflow and reduce noise, the industry commonly adopts the solution of increasing the number of blades.

[0003] However, traditional blower blades and hubs are mostly integrally molded structures with a fixed number of blades. If more blades are designed as integrally molded structures, the difficulty of mold making will increase dramatically. This not only makes the processing technology complex and the mass production efficiency low, but may also lead to situations where the mold cannot be made, which seriously limits the potential for improving fan performance. Summary of the Invention

[0004] In view of the above problems, this invention provides a blower blade structure.

[0005] To achieve the above objectives, this invention provides a blower blade structure, including a rotating body, first blades, and a secondary impeller assembly. The rotating body includes a hub and a blade tray, the blade tray being fitted onto the hub, with the center of the blade tray coinciding with the rotation axis of the hub. Multiple first blades are arranged in a circular array along the blade tray, and each first blade is fixedly connected to the blade tray. The secondary impeller assembly includes multiple second blades and a blade support, the second blades being arranged in a circular array along the blade support, and each second blade is fixedly connected to the blade support. The second blades are positioned between two adjacent first blades, and the first blades are connected to the blade support.

[0006] Furthermore, the blade tray is placed below the first blade and the second blade, with the second blade abutting against the blade tray.

[0007] Furthermore, the blade support is positioned above the second blade and the first blade.

[0008] Furthermore, the top of the first blade is provided with a groove for accommodating the blade support, and a positioning post is provided on the bottom surface of the groove;

[0009] The blade support is provided with a positioning hole at the corresponding position, and the positioning post is placed in the positioning hole.

[0010] Furthermore, the hub includes: a body and a rotating shaft, the body having a housing cavity for accommodating a motor, and an opening at the bottom of the body communicating with the housing cavity;

[0011] The rotating shaft is placed in the accommodating cavity, and the rotating shaft is integrally formed with the body. The rotating shaft coincides with the rotation axis of the hub.

[0012] Furthermore, the height of the first blade is equal to the height of the second blade.

[0013] Furthermore, there is a gap between the first blade and the hub sidewall, and there is a gap between the second blade and the hub sidewall.

[0014] Unlike previous technologies, the above-mentioned technical solution has the following advantages: by setting up a blade support and arranging multiple second blades in a circular array on the blade support, with the second blades placed between two adjacent first blades, the total number of blades can be increased through combination without the need for integral molding, thereby optimizing the airflow cutting effect. This solves the problems of difficult mold opening and limited mass production of traditional integrally molded multi-blade structures, reduces production and manufacturing costs, and increases the air volume and reduces wind noise after the total number of blades is increased.

[0015] The above description of the novel content is merely an overview of the technical solution of this novel. In order to enable those skilled in the art to better understand the technical solution of this novel and to implement it based on the content described in the text and drawings of the specification, and to make the above-mentioned objectives and other objectives, features and advantages of this novel easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this novel. Simple Explanation of the Diagram

[0016] Figure 1 is a schematic diagram of the structure of this novel invention; Figure 2 is an enlarged view of part A in Figure 1; Figure 3 is an enlarged view of part B in Figure 1; Figure 4 is a schematic diagram of the rotating body described in this embodiment. Implementation

[0017] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this invention in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this invention and are therefore intended only as examples, not as limiting the scope of protection of this invention.

[0018] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this invention, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0019] Unless otherwise defined, the technical terms used herein have the same meaning as understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0020] In this novel description, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0021] In this novel invention, terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantitative, hierarchical, or sequential relationship between these entities or operations.

[0022] Without further limitations, in this invention, the use of terms such as "comprising," "including," "having," or other similar expressions is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0023] In this invention, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of embodiments of this invention, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0024] In the description of this novel embodiment, the space-related terms used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or drawings. They are only for the convenience of describing the specific embodiment of this novel or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this novel.

[0025] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this invention, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Those skilled in the art to which this invention pertains can understand the specific meaning of the above terms in the embodiments of this invention according to the specific circumstances.

[0026] Please refer to Figures 1 to 4. This embodiment provides a blower blade structure, including:

[0027] The rotating body 1 includes a hub 11 and a blade tray 12, wherein the blade tray 12 is sleeved on the hub 11 and the center of the blade tray 12 coincides with the rotation axis of the hub 11.

[0028] First blade 2, there are multiple first blades 2, the multiple first blades 2 are arranged in a circular array along the blade tray 12, and the multiple first blades 2 are all fixedly connected to the blade tray 12;

[0029] The auxiliary wheel assembly 3 includes: a plurality of second blades 31 and a blade support 32. The plurality of second blades 31 are arranged in a circular array along the blade support 32, and are fixedly connected to the blade support 32. Each second blade 31 is positioned between two adjacent first blades 2, and the first blades 2 are detachably connected to the blade support 32. Alternatively, in other embodiments, the first blades 2 are fixedly connected to the blade support 32 in a non-detachable manner.

[0030] The rotating body 1 is the core support and drive carrier of the fan, consisting of a hub 11 and a blade tray 12. The hub 11 provides space for the motor and rotates around its own axis under the drive of the motor. The blade tray 12 is annular and is set on the hub 11, and is coaxial with the hub 11 to ensure stable rotation. Specifically, the blade tray 12 can be integrally formed with the hub 11 and connected to the outer wall of the hub 11. The first blades 2 are arranged in a ring array on the blade tray 12, and one end of the first blade 2 can be fixed to the blade tray 12 by integral forming. Specifically, the hub 11 drives the blade tray 12 to rotate synchronously, and the blade tray 12 is connected to the first blades 2, thus synchronously driving multiple first blades 2 to rotate, thereby generating airflow. The blade support 32 is a ring-shaped structure made of the same material as the blade tray 12, and its size is adapted to the blade tray 12. Multiple second blades 31 are disposed on the blade support 32, and the multiple second blades 31 are arranged in a ring array. Each second blade 31 is positioned between two adjacent first blades 2, and the first blades 2 are connected to the blade support 32. Therefore, under the drive of the first blades 2, the blade support 32 synchronously drives the multiple second blades 31 to rotate. That is, under the drive of the hub 11, the first blades 2 and the second blades 31 rotate synchronously, increasing the number of blades and thus improving the fan's airflow performance. Of course, in other embodiments, the blade support 32 may be made of a different material than the blade tray 12.

[0031] Specifically, each second blade 31 is disposed between two adjacent first blades 2, increasing the total number of blades to divide the airflow into smaller parts, reducing the pressure and friction on each blade, thereby making the air duct smoother and increasing the air volume; at the same time, the increased number of blades can cut the air more precisely, reduce airflow fluctuations and vortex intensity, and generate a more stable airflow, thereby reducing airflow pulsation and vortex noise, which also helps to reduce noise.

[0032] Compared with the existing technology, by setting up a blade support 32 and arranging multiple second blades 31 in a ring array on the blade support 32, with the second blades 31 placed between two adjacent first blades 2, the total number of blades can be increased through combination without integral molding, thereby optimizing the airflow cutting effect. This solves the problems of difficult mold opening and limited mass production of traditional integrally molded multi-blade structures, reduces production and manufacturing costs, and increases the air volume and reduces wind noise after the total number of blades is increased.

[0033] Please refer to Figure 1. In this embodiment, the blade tray 12 is placed below the first blade 2 and the second blade 31.

[0034] The blade tray 12 is installed at the lower part of the hub 11, and its upper surface is flush with the bottom of the first blade 2 and the second blade 31, forming a flat support surface. The blade tray 12 is placed below the first blade 2, so that its upper surface becomes a unified reference surface for the bottom of the first blade 2. The first blade 2 is fixed to this reference surface through integral injection molding. When the second blade 31 is assembled, its bottom directly fits against this reference surface, and the normal pressure generated by the surface contact forms an axial limit. There is no need to design additional limiting structures such as clips and bolts, simplifying the assembly steps and allowing the secondary wheel assembly 3 to be quickly assembled onto the rotating body 1 to increase the total number of blades.

[0035] Referring to Figure 1, in this embodiment, the blade support 32 is placed above the second blade 31 and the first blade 2. The blade support 32 covers the tops of the first blade 2 and the second blade 31, and its lower surface is in contact with the tops of the first blade 2 and the second blade 31. Through the detachable connection with the first blade 2, the dispersed tops of the first blade 2 and the second blade 31 are integrated into a unified whole. Together with the blade tray 12, it further restricts the axial displacement of the first blade 2 and the second blade 31, ensuring the stable rotation of the first blade 2 and the second blade 31.

[0036] Please refer to Figures 2 and 3. In this embodiment, the top of the first blade 2 is provided with a groove 21 for accommodating the blade support 32, and the bottom surface of the groove 21 is provided with a positioning post 22.

[0037] The blade support 32 is provided with a positioning hole 321 at a corresponding position, and the positioning post 22 is placed in the positioning hole 321 to realize the connection between the first blade 2 and the blade support 32. Moreover, the connection between the positioning hole 321 and the positioning post 22 is further fixed by adhesives such as glue, or further fixed by heat melting, ultrasonic waves or other methods.

[0038] The groove 21 is a notch structure at the top of the first blade 2. The depth of the groove 21 is equal to the thickness of the blade support 32, meaning that when the blade support 32 is placed in the groove 21, the top surface of the groove 21 is flush with the top surface of the blade support 32. The positioning post 22 is a protrusion structure set on the bottom wall of the groove 21, and the height of the positioning post 22 is the same as the thickness of the blade support 32. Specifically, during assembly, the blade support 32 is placed in the groove 21 at the top of the first blade 2, and the positioning post 22 is placed in the positioning hole 321 on the blade support 32. The movement of the blade support 32 relative to the blade tray 12 is restricted by the cooperation between the positioning post 22 and the positioning hole 321, so as to ensure that the first blade 2 and the second blade 31 rotate synchronously.

[0039] By setting the positioning post 22 and the positioning hole 321, the blade support 32 can be detachably mounted on the first blade 2, which facilitates assembly and subsequent maintenance and replacement; and the positioning post 22 and the positioning hole 321 cooperate to restrict the movement of the blade support 32 relative to the blade tray 12 to ensure stable rotation of the blade.

[0040] Please refer to Figure 4. In this embodiment, the hub 11 includes: a body 111 and a rotating shaft 112. The body 111 has a housing cavity 1111 for accommodating a motor.

[0041] The rotating shaft 112 is placed in the receiving cavity 1111, and the rotating shaft 112 is integrally formed with the body 111. The rotating shaft 112 coincides with the rotation axis of the hub 11. Of course, in other embodiments, the rotating shaft 112 and the body 111 can also be separate, and the two can be fixed by welding or other methods.

[0042] The main body 111 is the main structure of the hub 11, used to accommodate the motor and mount the blade tray 12; the rotating shaft 112 is a structure formed with the main body 111, used to cooperate with the motor to drive the main body 111 to rotate; the accommodating cavity 1111 is a cavity structure opened inside the main body 111 for accommodating the motor; the opening facilitates the placement of the motor in the accommodating cavity 1111. The accommodating cavity 1111 inside the main body 111 provides installation space for the motor, the bottom opening facilitates motor assembly and wiring layout, and the rotating shaft 112 coincides with the rotation axis of the main body 111 to ensure coaxiality during rotation and reduce eccentric vibration.

[0043] In this embodiment, the height of the first blade 2 is equal to the height of the second blade 31. The height of the first blade 2 is the length of the first blade 2 along the rotation axis, and the height of the second blade 31 is the length of the second blade 31 along the rotation axis. This ensures that the heights of the first blade 2 and the second blade 31 are consistent, guaranteeing that the airflow channel formed when they rotate is of uniform height. This avoids turbulence or eddies in the airflow within the channel due to height differences, resulting in smoother airflow, further increasing the air volume and reducing wind noise.

[0044] In this embodiment, there is a gap between the first blade 2 and the side wall of the hub 11, and there is a gap between the second blade 31 and the side wall of the hub 11. The gap can increase the air intake to improve the air volume.

[0045] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this invention, this should not limit the scope of patent protection for this invention. Any technical solutions resulting from equivalent structural or procedural substitutions or modifications made based on the essential concept of this invention and utilizing the content described in the text and drawings of this invention, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection for this invention.

[0046] 1: Rotating main body 11: Wheel hub 111:Ontology 1111: Receptacle 112: Shaft 12: Blade tray 2: First blade 21: Groove 22: Positioning Post 3: Sub-wheelset 31: Second blade 32: Blade support 321: Positioning hole

Claims

1. A blower blade structure, characterized in that it comprises: A rotating body includes: a hub and a blade tray, the blade tray being fitted onto the hub, and the center of the blade tray coinciding with the rotation axis of the hub; multiple first blades arranged in a circular array along the blade tray, and each of the multiple first blades being fixedly connected to the blade tray; a secondary wheel assembly including: multiple second blades and a blade support, the multiple second blades arranged in a circular array along the blade support, and each of the multiple second blades being fixedly connected to the blade support; the second blades are positioned between two adjacent first blades, and the first blades are connected to the blade support.

2. The blower blade structure as described in claim 1, wherein, The blade tray is placed below the first blade and the second blade.

3. The blower blade structure as described in claim 1, wherein, The blade support is positioned above the second blade and the first blade.

4. The blower blade structure as described in claim 3, wherein, The first blade has a groove at its top for accommodating the blade support, and a positioning post is provided on the bottom surface of the groove; the blade support has a positioning hole at a corresponding position, and the positioning post is placed in the positioning hole.

5. The blower blade structure as described in claim 1, wherein, The hub includes a body and a rotating shaft. The body has a cavity for accommodating a motor. The rotating shaft is placed in the cavity and coincides with the axis of rotation of the hub.

6. The blower blade structure as described in claim 1, wherein, The height of the first blade is equal to the height of the second blade.

7. The blower blade structure as described in claim 1, wherein, There is a gap between the first blade and the hub sidewall, and there is a gap between the second blade and the hub sidewall.

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