Cooling fan with different configuration combinations of inner fan blade and outer fan blade

Abstract

The utility model relates to a cooling fan with different configuration combinations of inner and outer fan blades, which comprises a seat body frame, an outer ring frame, an inner ring frame wall, an outer ring frame wall and an inner ring frame wall, and is characterized in that the seat body frame comprises a fan seat body and an outer ring frame wall; the blade device comprises a plurality of separated inner fan blades and a plurality of separated outer fan blades, each inner fan blade is provided with an inner fan root part and an inner fan end part, the inner fan root part is connected to the inner ring frame wall of the fan base body, the inner fan end part is connected to the outer ring frame, and the inner fan blade is at least provided with an inner fan blade air inlet angle and an inner fan blade front inclination angle; and the outer fan blade is provided with an outer fan root part and an outer fan end part, the outer fan root part is connected to the outer ring frame, the outer fan end part is a free end, and the outer fan blade and the inner fan blade present different angle configuration designs and operation effects, so that the overall excellent optimization and application effects are achieved.

Description

Technical Field

[0001] The utility model relates to a fan structure, in particular to a heat dissipation fan which has the function of adjusting the matching of inner and outer airflow areas, optimizes the design of various blade angles and has different combinations of inner and outer blade configurations. Background Art

[0002] Current cooling fans are a type of heat dissipation structure commonly used in electronic products. They are used to quickly remove heat generated by electronic, motor components, or other devices to achieve the purpose of heat dissipation and cooling, thereby ensuring the efficiency, quality, and lifespan of the product. A cooling fan is an application of the principle of a motor, an electric mechanical device that uses electromagnetic effects to generate rotational energy output. Generally speaking, a cooling fan (motor) is composed of two major parts: a stator and a rotor, which are connected by a bearing. Both the stator and rotor can be selectively wound with coils or made of materials with permanent magnetism. When current passes through the wound coils, the electromagnetic effect causes the rotor to rotate relative to the stator. In this way, the rotor blades can exert their airflow to achieve the purpose of heat dissipation and cooling.

[0003] Since the cooling fan installed inside the computer primarily dissipates heat generated by the central processing unit (CPU), which is surrounded by other components, the single airflow area generated by the fan is unable to expand the heat dissipation area and properly adjust its airflow, making it a suboptimal design. Furthermore, the fan blades themselves have specific design features, such as blade mounting angle, blade inlet angle, and blade rake angle. If improperly designed, the blades may experience rotational stall and resonance failure. In order to optimize airflow efficiency or achieve the desired effect by combining different internal and external wind field effects, these issues also need to be addressed. Therefore, improving the related deficiencies of conventional cooling fans is an important area that the industry should strive to address and overcome.

[0004] Therefore, in view of the shortcomings of existing cooling fan technology, the creators of this case began to develop a solution, hoping to develop a cooling fan with different internal and external fan blade configurations that can expand the heat dissipation area, excellent airflow efficiency, stable operation and low noise, so as to serve the public and promote the development of this industry. After a long period of thinking, the creators of this case came into being. Utility Model Content

[0005] The purpose of the present invention is to provide a cooling fan with different combinations of inner and outer fan blade configurations, which can expand the cooling area of the cooling fan as a whole, and has the function of adjusting the matching of the inner and outer airflow areas, thereby actively improving its cooling efficiency and airflow allocation application.

[0006] Another object of the present invention is to provide a cooling fan with different combinations of inner and outer blade configurations, which can optimize the inner and outer blades of the cooling fan so that they can be combined with different blade configuration designs, and at the same time, the inner and outer blades can each have a better blade installation angle, blade wind inlet angle and blade forward inclination angle design, thereby greatly improving its operating efficiency, stability and low-noise performance.

[0007] The technical means adopted by the present invention to achieve the above-mentioned purpose are as follows: the present invention provides a heat dissipation fan with different combinations of inner and outer fan blade configurations, including: a base frame, the base frame including a fan base and an outer ring frame, the outer periphery of the fan base is an inner ring frame wall; a blade device, the blade device including a plurality of separated inner fan blades and a plurality of separated outer fan blades, the inner fan blade having an inner fan root and an inner fan end, the inner fan root being connected to the inner of the fan base The inner fan end is connected to the outer ring frame, and the inner fan blade has at least an inner fan blade wind inlet angle and an inner fan blade forward tilt angle; the outer fan blade has an outer fan root and an outer fan end, the outer fan root is connected to the outer ring frame, and the outer fan end is a free end. The outer fan blade has at least an outer fan blade wind inlet angle different from the inner fan blade wind inlet angle and an outer fan blade forward tilt angle different from the inner fan blade forward tilt angle, so that the inner fan blade and the outer fan blade present different angular configuration designs and operating effects.

[0008] In this embodiment, the inner fan blade has an inner leading edge and an inner trailing edge according to the rotation direction, and the outer fan blade has an outer leading edge and an outer trailing edge according to the rotation direction.

[0009] In this embodiment, the wind inlet angle of the inner blade is 33 degrees to 37 degrees, and the wind inlet angle of the outer blade is 23 degrees to 27 degrees.

[0010] In this embodiment, the wind inlet angle of the inner blade is 35 degrees, and the wind inlet angle of the outer blade is 25 degrees.

[0011] In this embodiment, the inclination angle of the inner blade is 13 degrees to 17 degrees, and the inclination angle of the outer blade is 43 degrees to 47 degrees.

[0012] In this embodiment, the inner blade has a forward inclination angle of 15 degrees, and the outer blade has a forward inclination angle of 45 degrees.

[0013] In this embodiment, an inner fan-out flow area is located below the inner blades, and an outer fan-out flow area is located below the outer blades.

[0014] In this embodiment, the inner fan blade has an inner fan blade installation angle, and the inner fan blade installation angle is 58 degrees to 62 degrees. The outer fan blade has an outer fan blade installation angle, and the outer fan blade installation angle is 48 degrees to 52 degrees.

[0015] In this embodiment, the installation angle of the inner fan blade is 60 degrees, and the installation angle of the outer fan blade is 50 degrees.

[0016] The advantage of the present invention is that it can expand the heat dissipation area of the cooling fan as a whole, and has the function of adjusting the internal and external airflow areas, thereby actively improving its heat dissipation efficiency and airflow allocation application; at the same time, the present invention makes different fan blade configuration designs match and combine, and at the same time makes the inner and outer fan blades each have a better blade inlet angle, blade forward inclination angle and blade installation angle design, thereby greatly improving its operating efficiency, stability and low noise performance.

[0017] In order to provide a better understanding and recognition of the technical features and the effects achieved by the present invention, preferred embodiment diagrams and detailed descriptions are provided as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional combination schematic diagram of the utility model.

[0019] Figure 2A This is a schematic diagram of the inner fan blade installation angle of the present invention.

[0020] Figure 2B Schematic diagram of the wind inlet angle of the inner fan blade of the present invention.

[0021] Figure 2C This is a schematic diagram of the forward inclination angle of the inner fan blade of the present invention.

[0022] Figure 3A This is a schematic diagram of the inner fan blade installation angle of the present invention.

[0023] Figure 3B Schematic diagram of the wind inlet angle of the inner fan blade of the present invention.

[0024] Figure 3C This is a schematic diagram of the forward inclination angle of the inner fan blade of the present invention.

[0025] Figure 4 This is a schematic diagram of the internal and external airflow heat dissipation of the present invention.

[0026] Explanation of the reference numerals: cooling fan 1; base frame 10; blade device 20; fan base 11; outer ring frame 12; accommodating space 110; inner ring frame wall 111; inner fan blades 21; outer fan blades 22; inner fan root 211; inner fan end 212; inner fan leading edge 213; inner fan trailing edge 214; outer fan root 221; outer fan end 222; outer fan leading edge 223; outer fan trailing edge 224; inner fan blade installation angle θ1a; inner fan blade wind inlet angle θ1b; inner fan blade forward tilt angle θ1c; outer fan blade installation angle θ2a; outer fan blade wind inlet angle θ2b; outer fan blade forward tilt angle θ2c; inner fan inlet area a; inner fan outflow area A; outer fan inlet area b; outer fan outflow area B. DETAILED DESCRIPTION

[0027] See also Figure 1 , used to illustrate the embodiment of the utility model having different internal and external fan blade configuration combinations, the heat dissipation fan 1 disclosed in this embodiment includes a base frame 10 and a blade device 20; the base frame 10 has a fan base 11 and an outer ring frame 12, the fan base 11 has an internal accommodating space 110 (see Figure 4 As shown), it is used to set components such as a rotating shaft and an electromagnetic coil (not shown), but is not limited to the above. The outer periphery of the fan base 11 is an inner ring frame wall 111.

[0028] The blade assembly 20 includes a plurality of separate inner blades 21 and a plurality of separate outer blades 22. The inner blades 21 are located between the fan base 11 and the outer ring frame 12. The inner blades 21 have an inner fan root 211 and an inner fan end 212. Specifically, the inner fan root 211 is connected to the inner ring frame wall 111 of the fan base 11, and the inner fan end 212 is connected to the inner side of the outer ring frame 12. The inner blades 21 also have an inner fan leading edge 213 and an inner fan trailing edge 214. The inner fan leading edge 213 and the inner fan trailing edge 214 are used to indicate the rotation direction of the inner blades 21.

[0029] The outer fan blade 22 has an outer fan root 221 and an outer fan end 222, the outer fan root 221 is connected to the outer side of the outer ring frame 12, and the outer fan end 222 is a free end; the outer fan blade 22 also has an outer fan leading edge 223 and an outer fan trailing edge 224, the outer fan leading edge 223 and the outer fan trailing edge 224 are used to indicate the rotation direction of the outer fan blade 22.

[0030] Please also refer to Figure 2A 、 Figure 2B and Figure 2C As shown in FIG, various angle designs of the inner blade 21 are explained. Figure 2AAs shown, the inner fan root 211 of the inner fan blade 21 is inclined toward the inner fan end 212 and has an inner fan blade installation angle θ1a with the horizontal tangent direction of the inner fan end 212. The inner fan blade installation angle θ1a is 58 degrees to 62 degrees, and is preferably 60 degrees. Figure 2B As shown, the inner fan root 211 has an inner blade inlet angle θ1b in the direction of the inclination of the inner fan root 211 toward the middle end and the horizontal tangent direction of the inner fan root 211. The inner blade inlet angle θ1b is 33 degrees to 37 degrees, and is preferably 35 degrees. Figure 2C As shown, the inner fan root 211 of the inner fan blade 21 has an inner fan blade forward inclination angle θ1c in the direction toward the inner fan end 212 and in the perpendicular direction of the inner fan root 211. The inner fan blade forward inclination angle θ1c is 13 degrees to 17 degrees, and is preferably 15 degrees.

[0031] Please also refer to Figure 3A 、 Figure 3B and Figure 3C As shown in FIG, various angle designs of the outer blades 22 are described. Figure 3A As shown, the outer fan root 221 of the outer fan blade 22 is inclined toward the outer fan end 222 and has an outer fan blade installation angle θ2a with the horizontal tangent direction of the outer fan root 221. The outer fan blade installation angle θ2a is 48 degrees to 52 degrees, and is preferably 50 degrees. Figure 3B As shown, the outer fan root 221 has an outer blade inlet wind angle θ2b with respect to the horizontal tangent direction of the outer fan root 221. The outer blade inlet wind angle θ2b is 23 degrees to 27 degrees, and is preferably 25 degrees. Figure 3C As shown, the outer fan root 221 of the outer fan blade 22 has an outer fan blade forward inclination angle θ2c in the direction toward the outer fan end 222 and in the perpendicular direction of the outer fan root 221. The outer fan blade forward inclination angle θ2c is 43 degrees to 47 degrees, and is preferably 45 degrees.

[0032] The above-mentioned structure makes the inner and outer blades of the cooling fan (axial flow fan) have different designs, that is, they have two different blade angle settings (such as wind inlet angle, forward inclination angle, etc.), so as to produce different internal and external wind flow effects, and the inner and outer blades of the cooling fan as a whole can be optimized, thereby producing an excellent function of a combination of different internal and external wind field effects.

[0033] Please also refer to Figure 4 As shown, when the embodiment of the heat dissipation fan of the utility model with different inner and outer blade configuration combinations is in operation, the upper part of the inner blade 21 (according to Figure 4The direction shown, the same below) is an inner fan-inflow area a, and below the inner fan blades 21 is an inner fan-outflow area A, which is mainly used to dissipate heat for the main heat-generating components (such as the central processing unit). Above the outer fan blades 22 is an outer fan-inflow area b, and below the outer fan blades 22 is an outer fan-outflow area B, which is mainly used to dissipate heat for the electronic components around the main heat-generating components (such as the central processing unit), thereby achieving the matching adjustment of the heat dissipation of the inner and outer fan blades and having a larger heat dissipation area; as for the relative rotation direction of the inner fan blades 21 and the outer fan blades 22, there is no limitation.

[0034] The cooling fan of the present invention has different combinations of inner and outer fan blade configurations. Through the above-mentioned structure, it can expand the cooling area of the cooling fan as a whole, and has the function of adjusting the inner and outer airflow areas, thereby actively improving its cooling efficiency and airflow allocation application; at the same time, the present invention makes different fan blade configuration designs match and combine, and at the same time makes the inner and outer fan blades each have a better blade inlet angle, blade forward inclination angle and blade installation angle design, thereby greatly improving its operating efficiency, stability and low-noise use effect.

[0035] The present invention has been described in more detail through the above preferred specific embodiments, but the present invention is not limited to the above exemplified embodiments. Within the scope of the technical ideas disclosed in the present invention, various changes and modifications to the structures are still within the scope of the present invention.

Claims

1. A cooling fan with different combinations of inner and outer blade configurations, characterized in that: Includes: A seat frame, the seat frame includes a fan seat and an outer ring frame, the outer periphery of the fan seat is an inner ring frame wall; A blade device, the blade device includes several separated inner fan blades and several separated outer fan blades, the inner fan blade has an inner fan root and an inner fan end, the inner fan root is connected to the inner ring frame wall of the fan base, the inner fan end is connected to the outer ring frame, the inner fan blade has at least an inner fan blade wind inlet angle and an inner fan blade forward tilt angle; the outer fan blade has an outer fan root and an outer fan end, the outer fan root is connected to the outer ring frame, the outer fan end is a free end, and the outer fan blade has at least an outer fan blade wind inlet angle different from the inner fan blade wind inlet angle and an outer fan blade forward tilt angle different from the inner fan blade forward tilt angle.

2. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 1, characterized in that: The inner fan blade has an inner fan leading edge and an inner fan trailing edge according to the rotation direction, and the outer fan blade has an outer fan leading edge and an outer fan trailing edge according to the rotation direction.

3. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 2, characterized in that: The wind inlet angle of the inner fan blade is 33 degrees to 37 degrees, and the wind inlet angle of the outer fan blade is 23 degrees to 27 degrees.

4. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 3, wherein: The wind inlet angle of the inner blade is 35 degrees, and the wind inlet angle of the outer blade is 25 degrees.

5. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 4, characterized in that: The inner blade has a forward inclination angle of 13 to 17 degrees, and the outer blade has a forward inclination angle of 43 to 47 degrees.

6. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 5, characterized in that: The inner blade has a forward inclination angle of 15 degrees, and the outer blade has a forward inclination angle of 45 degrees.

7. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 6, wherein: An inner fan-out flow area is located below the inner fan blades, and an outer fan-out flow area is located below the outer fan blades.

8. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 6, wherein: The inner fan blade has an inner fan blade installation angle, which is 58 degrees to 62 degrees. The outer fan blade has an outer fan blade installation angle, which is 48 degrees to 52 degrees.

9. The heat dissipation fan having different combinations of inner and outer blade configurations according to claim 8, wherein: The installation angle of the inner fan blade is 60 degrees, and the installation angle of the outer fan blade is 50 degrees.

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