A carbon fiber fan blade and aluminum hub composite structure cooling fan

Abstract

The utility model discloses a kind of composite structure heat dissipation fan of carbon fiber fan blade and aluminum hub, including fan frame assembly and fan blade assembly, fan blade assembly is located in fan frame assembly inside;Fan blade assembly includes aluminum hub piece and the fan blade piece made of carbon fiber, and fan blade piece is at least three on hub piece Circumferentially equidistant distribution;Fan blade piece made of carbon fiber has light weight high strength characteristics, effectively reduce the overall weight of the heat dissipation fan, reduce operating energy consumption;Aluminum hub piece has good structural strength and heat dissipation performance, provides stable support for fan blade piece while accelerating heat conduction, solve the contradiction between weight, strength and heat dissipation of single material;Fan blade piece and hub piece are preliminarily limited by plug-in cooperation, then form blocking positioning by end cover threaded connection, double fixed structure ensures that fan blade piece is not easy to loosen when high-speed operation, also facilitate fan blade piece disassembly replacement.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, and in particular to a composite structure cooling fan of carbon fiber fan blades and aluminum hub. Background Technology

[0002] Cooling fans are key components in the heat dissipation systems of electronic and mechanical equipment, and their performance directly affects the operational stability and service life of the equipment.

[0003] In the existing technology, the blades and hub of cooling fans are mostly made of a single material, commonly either all-metal or all-plastic.

[0004] While all-metal fans offer high structural strength, their overall weight is relatively large, leading to increased energy consumption during operation. Furthermore, metal materials have weak corrosion resistance, making them prone to damage in humid or corrosive environments, thus affecting the long-term use of the equipment. On the other hand, all-plastic fans are lighter, but they suffer from insufficient structural strength, making them prone to deformation at high speeds, which reduces heat dissipation and shortens their lifespan.

[0005] For example, a cooling fan with one-piece molded fan blades disclosed in the existing announcement number CN220726624U reduces the number of parts and reduces vibration and noise through the integrated design of fan blades and hub, but still does not solve the inherent defects of a single material.

[0006] Therefore, to address the problem of balancing weight, strength, and heat dissipation performance in existing fans, a cooling fan with a composite structure that combines lightweight, high strength, and efficient heat dissipation is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a composite cooling fan with carbon fiber blades and an aluminum hub to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] A composite cooling fan with carbon fiber blades and an aluminum hub includes a fan frame assembly and a fan blade assembly, wherein the fan blade assembly is disposed within the fan frame assembly, wherein:

[0010] The fan blade assembly includes an aluminum hub and fan blades made of carbon fiber, wherein at least three fan blades are circumferentially equidistantly distributed on the hub.

[0011] The hub component includes a rim and an end cap. The rim and the fan blade are interlocked for interlocking and limiting. The end cap is threaded to the inner wall of the rim and can contact and block the fan blade for blocking and positioning. The end cap is indirectly connected to the fan frame assembly via a motor.

[0012] As a preferred technical solution, the fan frame assembly includes a hollow frame with an air inlet on one side and an air outlet on the other side opposite to the air inlet. A base is integrally formed on the side of the inner cavity of the frame near the air inlet, and an installation cavity for accommodating the motor rotor and stator is formed between the base, the wheel rim and the end cover.

[0013] As a preferred technical solution, a set of mounting plates is integrally formed on both sides of the frame surface, and four mounting plates are distributed in a rectangular array in each set, with mounting holes provided on the mounting plates.

[0014] As a preferred technical solution, the fan blade includes a blade, one end of which is integrally formed with an insert block, and a slot adapted to the insert block is opened on the side of the wheel rim away from the base, and the insert block is inserted into the inner cavity of the slot.

[0015] As a preferred technical solution, the slot is open on the side away from the base, and one side of the insert block contacts the end cap. A rubber pad is provided on the side of the insert block that contacts the end cap, and the rubber pad fits tightly against the end cap.

[0016] As a preferred technical solution, grooves are provided on both sides of the inner wall of the slot, and protrusions that match the grooves are integrally formed on both sides of the insert, with the protrusions inserted into the inner cavity of the corresponding groove.

[0017] As a preferred technical solution, the surface of the blade is provided with a heat dissipation coating, which is a graphene heat dissipation coating.

[0018] As a preferred technical solution, both the wheel rim and the end cap are provided with an anodized layer, which is an aluminum oxide film layer.

[0019] This utility model has at least the following beneficial effects:

[0020] This application utilizes carbon fiber fan blades, which are lightweight and high-strength, effectively reducing the overall weight of the cooling fan and decreasing operating energy consumption. The aluminum hub combines excellent structural strength and heat dissipation performance, providing stable support for the fan blades while accelerating heat conduction, thus resolving the contradiction between weight, strength, and heat dissipation in a single material. The fan blades and hub are initially positioned by plugging together, and then the end cap is threaded to form a blocking and positioning structure. This double fixing structure ensures that the fan blades are not easily loosened during high-speed operation, while also facilitating the disassembly and replacement of the fan blades. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is an exploded view of the structure of this utility model;

[0023] Figure 3 This is an exploded view of the structure of the hub and fan blade components of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the wheel rim and blade of this utility model.

[0025] In the diagram: 100, fan frame assembly; 110, frame; 120, base; 130, mounting plate; 131, mounting hole; 200, fan blade assembly; 210, hub assembly; 211, rim; 212, end cap; 213, slot; 2131, groove; 220, fan blade assembly; 221, blade; 222, insert; 2221, protrusion. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-4 This utility model provides a composite cooling fan with carbon fiber blades and an aluminum hub, including a fan frame assembly 100 and a fan blade assembly 200, with the fan blade assembly 200 disposed within the fan frame assembly 100. The fan blade assembly 200 includes an aluminum hub 210 and fan blades 220 made of carbon fiber, with at least three fan blades 220 evenly distributed circumferentially on the hub 210. The hub 210 includes a rim 211 and an end cap 212, with the rim 211 and the fan blades 220 interlocking for insertion limiting. The end cap 212 and the inner wall of the rim 211 are connected. The end cap 212 is indirectly connected to the fan frame assembly 100 via a motor. By combining the fan frame assembly 100 and the fan blade assembly 200, the fan blade 220 made of carbon fiber and the hub 210 made of aluminum are formed into a composite structure. This utilizes the lightweight and high-strength characteristics of carbon fiber and the support and heat dissipation advantages of the aluminum hub 210. At the same time, the dual fixation of plug-in and threaded connections ensures reliable assembly of the fan blade 220 and the hub 210, thus solving the performance shortcomings of fans made of single materials.

[0028] The fan frame assembly 100 includes a hollow frame 110. One side of the frame 110 has an air inlet, and the other side has an air outlet opposite to the air inlet. A base 120 is integrally formed on the side of the inner cavity of the frame 110 near the air inlet. An installation cavity for accommodating the motor rotor and stator is formed between the base 120, the wheel rim 211, and the end cover 212. The motor stator is fixed to the base 120, and the rotor drives the end cover 212 through the output shaft to drive the hub 210 and the fan blade 220 to rotate. The motor is integrated between the fan frame assembly 100 and the hub 210 through the installation cavity, which optimizes the transmission path between the motor and the fan blade assembly 220, ensures direct and efficient power transmission, reduces energy loss in intermediate links, and improves the stability of fan operation.

[0029] The frame 110 has a set of mounting plates 130 integrally formed on both sides of its surface. Each set of mounting plates 130 has four plates arranged in a rectangular array. The mounting plates 130 have mounting holes 131. The design of the mounting plates 130 and mounting holes 131 on both sides of the frame 110 provides a convenient way to fix the cooling fan, making it easy to install in different devices or scenarios, thus enhancing the product's versatility and practicality.

[0030] The fan blade component 220 includes a blade 221, with an insert 222 integrally formed at one end of the blade 221. A slot 213 adapted to the insert 222 is provided on the surface of the wheel rim 211 away from the base 120. The insert 222 is inserted into the inner cavity of the slot 213. The insert 222 of the fan blade component 220 and the slot 213 of the wheel rim 211 are inserted and engaged to form a preliminary limiting structure, ensuring that the fan blade component 220 is evenly distributed circumferentially on the hub component 210, avoiding shaking due to uneven force during operation, and improving structural stability.

[0031] The slot 213 is open on the side away from the base 120, and the side of the insert 222 contacts the end cover 212. A rubber pad is provided on the side of the insert 222 that contacts the end cover 212. The rubber pad fits tightly with the end cover 212. The rubber pad is used to buffer the vibration between the fan blade 220 and the end cover 212 and enhance the fit and sealing between the two. The open design of the slot 213, combined with the blocking of the end cover 212 and the buffering effect of the rubber pad, not only achieves the axial positioning of the fan blade 220, but also reduces the rigid collision between the fan blade 220 and the end cover 212, reducing vibration and noise and improving the smoothness of operation.

[0032] The slot 213 has grooves 2131 on both sides of its inner wall, and the plug 222 has protrusions 2221 on both sides that are adapted to the grooves 2131. The protrusions 2221 are inserted into the inner cavity of the corresponding grooves 2131. The cooperation between the grooves 2131 and the protrusions 2221 further strengthens the connection between the plug 222 and the slot 213, prevents the fan blade 220 from radially displacing when rotating at high speed, enhances the anti-loosening ability of the plug structure, and improves the service life of the cooling fan.

[0033] The surface of blade 221 is provided with a heat dissipation coating, which is a graphene heat dissipation coating. The graphene heat dissipation coating on the surface of blade 221 can accelerate the heat exchange between it and the air, improve the heat dissipation efficiency, and ensure that the cooling fan can quickly dissipate heat during long-term operation to maintain the stable operation of the equipment at a low temperature.

[0034] The surfaces of the wheel rim 211 and the end cap 212 are provided with an anodized layer, which is an aluminum oxide film layer. The anodized layer on the surface of the wheel rim 211 and the end cap 212 forms a protective layer, which enhances the corrosion resistance and wear resistance of the aluminum components, making them less prone to damage in humid or complex environments and extending the service life of the wheel hub 210.

[0035] The working principle of this utility model is as follows:

[0036] When the cooling fan is running, the motor stator is fixed on the base 120 of the fan frame assembly 100, and the rotor drives the end cover 212 to rotate through the output shaft. The wheel rim 211 rotates synchronously with the end cover 212, thereby driving the fan blade 220 made of carbon fiber, which is inserted into the wheel rim 211, to rotate.

[0037] When the fan blade 220 rotates, air enters from the air inlet of the frame 110, is guided by the blades 221, and is discharged from the air outlet, forming an airflow circulation to achieve heat dissipation. During this process, the lightweight characteristics of the fan blade 220 made of carbon fiber reduce rotational resistance and energy consumption. The aluminum hub 210 conducts the heat generated by the motor and fan blade 220 into the air through its own heat dissipation performance, and the heat dissipation coating on the surface of the blades 221 further accelerates heat dissipation.

[0038] When the fan blade 220 is damaged and needs to be replaced, simply unscrew the end cap 212 from the rim 211, and then move the fan blade 220 axially along the rim 211, so that the insert 222 slides in the slot 213 and the protrusion 2221 slides in the groove 2131 until they are completely disengaged, thus completing the disassembly of the fan blade 220. Conversely, by reversing the above steps, the replaced fan blade 220 can be assembled onto the hub 210. The threaded connection of the end cap 212 and the cushioning effect of the rubber pad reduce vibration and noise, improving operational stability. The anodized layer protects the hub 210 from environmental corrosion, extending its overall service life. The mounting plate 130 securely fixes the cooling fan to the equipment through the mounting holes 131, ensuring long-term reliable operation.

[0039] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model 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 this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite cooling fan with carbon fiber blades and an aluminum hub, characterized in that, It includes a fan frame assembly (100) and a fan blade assembly (200), wherein the fan blade assembly (200) is disposed within the fan frame assembly (100), wherein: The fan blade assembly (200) includes an aluminum hub (210) and fan blades (220) made of carbon fiber, wherein at least three fan blades (220) are circumferentially equidistantly distributed on the hub (210); The hub component (210) includes a wheel rim (211) and an end cap (212). The wheel rim (211) and the fan blade component (220) are inserted into each other to achieve insertion limit. The end cap (212) is threaded to the inner wall of the wheel rim (211) and can contact and block the fan blade component (220) to achieve blocking positioning. The end cap (212) is indirectly connected to the fan frame assembly (100) through a motor.

2. The composite cooling fan with carbon fiber blades and aluminum hub according to claim 1, characterized in that: The fan frame assembly (100) includes a hollow frame (110). One side of the frame (110) is provided with an air inlet, and the other side is provided with an air outlet opposite to the air inlet. A base (120) is integrally formed on the side of the inner cavity of the frame (110) near the air inlet. An installation cavity for accommodating the motor rotor and stator is formed between the base (120), the wheel rim (211), and the end cover (212).

3. The composite cooling fan with carbon fiber blades and aluminum hub according to claim 2, characterized in that: A set of mounting plates (130) are integrally formed on both sides of the surface of the frame (110). Each set of mounting plates (130) has four in a rectangular array, and mounting holes (131) are provided on the mounting plates (130).

4. The composite cooling fan with carbon fiber blades and aluminum hub according to claim 2, characterized in that: The fan blade (220) includes a blade (221), one end of which is integrally formed with a plug (222). A slot (213) adapted to the plug (222) is provided on the surface of the rim (211) away from the base (120). The plug (222) is inserted into the inner cavity of the slot (213).

5. The composite cooling fan with carbon fiber blades and aluminum hub according to claim 4, characterized in that: The slot (213) is open on the side away from the base (120), and one side of the insert (222) is in contact with the end cap (212). A rubber pad is provided on the side of the insert (222) that is in contact with the end cap (212), and the rubber pad is in close contact with the end cap (212).

6. The composite cooling fan with carbon fiber blades and aluminum hub according to claim 4, characterized in that: The inner wall of the slot (213) is provided with grooves (2131) on both sides, and the two sides of the insert (222) are integrally formed with protrusions (2221) that are adapted to the grooves (2131). The protrusions (2221) are inserted into the inner cavity of the corresponding grooves (2131).

7. The composite cooling fan with carbon fiber blades and aluminum hub according to claim 4, characterized in that: The surface of the blade (221) is provided with a heat dissipation coating, which is a graphene heat dissipation coating.

8. The composite cooling fan with carbon fiber blades and aluminum hub according to any one of claims 1-7, characterized in that: The surfaces of the wheel rim (211) and the end cap (212) are both provided with an anodic oxide layer, which is an aluminum oxide film layer.

Images