Fan module

Abstract

The utility model provides a fan module, including a fan body. The fan body includes a hub, a plurality of fan blades, a first mute ring and a second mute ring. The plurality of fan blades are arranged on the hub, wherein a first airflow is sucked into the plurality of fan blades from a first side of the fan body, and the first airflow is driven by the plurality of fan blades to be sent to an air outlet side of the fan body. The first mute ring is arranged on the plurality of fan blades, and the first mute ring is located at the first side of the fan body. The second mute ring is arranged on the plurality of fan blades, and the second mute ring is located at a second side of the fan body, and the second side is opposite to the first side.

Description

Technical Field

[0001] The present invention relates to a fan module, and more particularly to a fan module with noise reduction function. Background Technology

[0002] As laptops become increasingly powerful, the heat generated by processors and other electronic components also increases, making the performance and reliability of laptop cooling modules crucial design considerations. In existing technologies, centrifugal fans are widely used in laptop cooling systems. They use high-speed rotating blades to generate airflow, transferring heat from heat pipes to the fins and dissipating it from the chassis. However, known fan modules often produce abnormal noises during operation due to vibrations generated by the blades at high speeds, affecting the user experience. Furthermore, insufficient structural strength can lead to deformation or damage in the trend towards thinner and lighter laptops, impacting overall cooling efficiency and device lifespan. Utility Model Content

[0003] The present invention provides a fan module to address the problems of known technologies, comprising a fan body. The fan body includes a hub, multiple fan blades, a first silencing ring, and a second silencing ring. The multiple fan blades are disposed on the hub, wherein a first airflow is drawn into the space between the multiple fan blades from a first side of the fan body, and the first airflow is driven by the multiple fan blades to be discharged towards an outlet side of the fan body. The first silencing ring is disposed on the multiple fan blades and located on the first side of the fan body. The second silencing ring is disposed on the multiple fan blades and located on a second side of the fan body, opposite to the first side.

[0004] In one embodiment, the fan module further includes a module housing, wherein the module housing includes a first air inlet and an air outlet, the first air inlet being opposite to the first side of the fan body, and the air outlet being opposite to the air outlet side of the fan body.

[0005] In one embodiment, the module housing includes a first cover plate, a second cover plate, and a side wall. The first cover plate corresponds to the first side of the fan body, and the second cover plate corresponds to the second side of the fan body. The side wall connects the first cover plate and the second cover plate and is sandwiched between the first cover plate and the second cover plate. The first air inlet is formed on the first cover plate, and the air outlet is formed by the first cover plate, the second cover plate, and the side wall.

[0006] In one embodiment, a first annular groove is formed on the first cover plate, the first annular groove facing the first silencing ring.

[0007] In one embodiment, a second annular groove is formed on the second cover plate, the second annular groove facing the second silencing ring.

[0008] In one embodiment, the distance between the first silencing ring and the bottom of the first annular groove is equal to the shortest distance between the fan blade and the first cover plate.

[0009] In one embodiment, a second airflow is drawn into the space between the plurality of fan blades from the second side of the fan body, and the second airflow is driven by the plurality of fan blades to be sent out toward the air outlet side of the fan body. The flow rate of the second airflow is less than the flow rate of the first airflow. The module housing further includes a second air inlet, which is located opposite the second side of the fan body.

[0010] In one embodiment, the radius of the second silencing ring is less than or equal to the radius of the first silencing ring.

[0011] In one embodiment, each blade is an S-shaped blade, and each blade includes a blade connecting end, a curvature reversal point, and a blade free end. The blade connecting end is connected to the hub, and the second noise reduction ring is located between the curvature reversal point and the blade free end.

[0012] In one embodiment, the plurality of fan blades collectively define an air intake zone and a pressurization zone, the pressurization zone surrounding the air intake zone, and the second silencing ring located within the pressurization zone.

[0013] To overcome the shortcomings of known centrifugal fans in terms of noise control and structural strength, the fan module of this embodiment adopts a double-protruding centrifugal fan annular structure, with a first silencing ring and a second silencing ring correspondingly arranged on the upper and lower sides of the fan blades. This effectively suppresses noise generated by vibration when the fan blades are running at high speed, thereby improving the quietness. Simultaneously, the first and second silencing rings enhance the structural strength of the fan body, helping to reduce the risk of abnormal noise and damage caused by structural deformation. In one embodiment, under the same noise conditions, the airflow of the fan module of this embodiment is increased by approximately 7% compared to the traditional single-plane fan blade design, demonstrating that the fan module of this embodiment combines advantages in quietness and efficiency, making it particularly suitable for high-efficiency heat dissipation modules in thin and light laptops. Attached Figure Description

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 This is a perspective view showing the fan module of an embodiment of the present utility model.

[0016] Figure 2This shows the internal structure of the fan module in an embodiment of the present invention.

[0017] Figure 3 This is a cross-sectional view showing the fan module of an embodiment of the present invention.

[0018] Figure 4 This shows the relative position between the first silencing ring and the first annular groove in this embodiment of the present invention.

[0019] Figure 5 This is another perspective on the fan module of this utility model.

[0020] Figure 6A as well as Figure 6B This shows the detailed structure of the fan body according to an embodiment of the present invention.

[0021] Figure label:

[0022] F: Fan module

[0023] 1: Fan body

[0024] 11: Wheel hub

[0025] 12: Fan blades

[0026] 121: Fan blade connection end

[0027] 122: Curvature Reversal Point

[0028] 123: Free end of fan blade

[0029] 13: First Silent Ring

[0030] 14: Second Silent Ring

[0031] 191: First side

[0032] 192: Second side

[0033] 193: Air outlet side

[0034] 2: Module housing

[0035] 21: First cover plate

[0036] 211: First annular groove

[0037] 22: Second cover plate

[0038] 221: Second annular groove

[0039] 23: Side wall

[0040] 241: First air inlet

[0041] 242: Second air inlet

[0042] 243: Air vent

[0043] P1: Air intake area

[0044] P2: Pressure boosting zone

[0045] A1: First airflow

[0046] A2: Second airflow

[0047] d1: Distance

[0048] d2: Shortest distance Detailed Implementation

[0049] Figure 1 This is a perspective view showing the fan module of an embodiment of the present utility model. Figure 2 This shows the internal structure of the fan module in an embodiment of the present invention. Figure 3 This is a cross-sectional view showing a fan module according to an embodiment of the present invention. (See accompanying reference.) Figure 1 , 2 3. The fan module F of this utility model embodiment includes a fan body 1. The fan body 1 includes a hub 11, a plurality of fan blades 12, a first silencing ring 13, and a second silencing ring 14. The plurality of fan blades 12 are disposed on the hub 11. A first airflow A1 is drawn into the space between the plurality of fan blades 12 from a first side 191 of the fan body 1, and the first airflow A1 is driven by the plurality of fan blades 12 to be sent out towards an outlet side 193 of the fan body 1. The first silencing ring 13 is disposed on the plurality of fan blades 12 and is located on the first side 191 of the fan body 1. The second silencing ring 14 is disposed on the plurality of fan blades 12 and is located on a second side 192 of the fan body 1, which is opposite to the first side 191.

[0050] Referring to Figures 1 and 3, in one embodiment, the fan module F further includes a module housing 2, wherein the module housing 2 includes a first air inlet 241 and an air outlet 243, the first air inlet 241 corresponding to the first side 191 of the fan body 1, and the air outlet 243 corresponding to the air outlet side 193 of the fan body 1.

[0051] Referring to Figures 1 and 2, in one embodiment, the module housing 2 includes a first cover plate 21, a second cover plate 22, and a side wall 23. The first cover plate 21 corresponds to the first side 191 of the fan body 1, and the second cover plate 22 corresponds to the second side 192 of the fan body 1. The side wall 23 connects the first cover plate 21 and the second cover plate 22 and is sandwiched between the first cover plate 21 and the second cover plate 22. The first air inlet 241 is formed on the first cover plate 21, and the air outlet 243 is formed by the first cover plate 21, the second cover plate 22, and the side wall 23.

[0052] Reference Figure 3 In one embodiment, a first annular groove 211 is formed on the first cover plate 21, and the first annular groove 211 faces the first silencing ring 13. This prevents interference between the first silencing ring 13 and the first cover plate 21.

[0053] Reference Figure 3 In one embodiment, a second annular groove 221 is formed on the second cover plate 22, and the second annular groove 221 faces the second silencing ring 14. This prevents interference between the second silencing ring 14 and the second cover plate 22.

[0054] Figure 4 This shows the relative position between the first silencing ring and the first annular groove in this embodiment of the invention. (Refer to...) Figure 4 In one embodiment, the distance d1 between the first silencing ring 13 and the bottom 211 of the first annular groove is equal to the shortest distance d2 between the fan blade 12 and the first cover plate 21.

[0055] In one embodiment, the cross-sections of the first silencing ring 13 and the second silencing ring 14 are rectangular, and the above disclosure does not limit the present invention. In other embodiments, the cross-sections of the first silencing ring 13 and the second silencing ring 14 may also be appropriately varied.

[0056] Figure 5 This is another perspective showing the fan module of this utility model. Referring to Figures 3 and 5, in one embodiment, a second airflow A2 is drawn into the space between the plurality of fan blades 12 from the second side 192 of the fan body 1. The second airflow A2 is driven by the plurality of fan blades 12 and sent out toward the air outlet side 193 of the fan body 1. The flow rate of the second airflow A2 is less than the flow rate of the first airflow A1. The module housing 2 further includes a second air inlet 242, which corresponds to the second side 192 of the fan body 1.

[0057] Figures 6A and 6B show the detailed structure of the fan body according to an embodiment of the present invention. Referring to Figures 6A and 6B, in one embodiment, the radius of the second silencing ring 14 is less than or equal to the radius of the first silencing ring 13. In this embodiment, since the first silencing ring 13 and the second silencing ring 14 do not overlap, they can provide reinforcement at different positions of the plurality of fan blades 12 to prevent structural deformation. Furthermore, the smaller radius of the second silencing ring 14 also provides further reinforcement. Moreover, since the flow rate of the second airflow is less than the flow rate of the first airflow, the small-radius second silencing ring 14 has a limited impact on the flow rate.

[0058] Referring to Figures 6A and 6B, in one embodiment, each blade 12 is an S-shaped blade, and each blade 12 includes a blade connecting end 121, a curvature reversal point 122, and a blade free end 123. The blade connecting end 121 is connected to the hub 11, and the second noise reduction ring 14 is located between the curvature reversal point 122 and the blade free end 123.

[0059] Reference Figure 6B In one embodiment, the plurality of fan blades 12 collectively define an air intake zone P1 and a pressurization zone P2, the pressurization zone P2 surrounding the air intake zone P1, and the second silencing ring 14 located within the pressurization zone P2. In one embodiment, the plurality of fan blades may also be of other shapes, and the above disclosure does not limit the present invention.

[0060] To overcome the shortcomings of known centrifugal fans in terms of noise control and structural strength, the fan module of this embodiment adopts a double-protruding centrifugal fan annular structure, with a first silencing ring and a second silencing ring correspondingly arranged on the upper and lower sides of the fan blades. This effectively suppresses noise generated by vibration when the fan blades are running at high speed, thereby improving the quietness. Simultaneously, the first and second silencing rings enhance the structural strength of the fan body, helping to reduce the risk of abnormal noise and damage caused by structural deformation. In one embodiment, under the same noise conditions, the airflow of the fan module of this embodiment is increased by approximately 7% compared to the traditional single-plane fan blade design, demonstrating that the fan module of this embodiment combines advantages in quietness and efficiency, making it particularly suitable for high-efficiency heat dissipation modules in thin and light laptops.

[0061] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A fan module, characterized by include: A fan body, including: One wheel hub; Multiple fan blades are disposed on the hub, wherein a first airflow is drawn into the space between the multiple fan blades from a first side of the fan body, and the first airflow is driven by the multiple fan blades to be sent out towards an outlet side of the fan body: A first noise reduction ring is disposed on the plurality of fan blades, the first noise reduction ring being located on the first side of the fan body; and A second noise reduction ring is disposed on the plurality of fan blades. The second noise reduction ring is located on a second side of the fan body, which is opposite to the first side.

2. The fan module of claim 1, wherein, It further includes a module housing, wherein the module housing includes a first air inlet and an air outlet, the first air inlet being opposite to the first side of the fan body, and the air outlet being opposite to the air outlet side of the fan body.

3. The fan module of claim 2, wherein, The module housing includes a first cover plate, a second cover plate, and a side wall. The first cover plate corresponds to the first side of the fan body, and the second cover plate corresponds to the second side of the fan body. The side wall connects the first cover plate and the second cover plate and is sandwiched between the first cover plate and the second cover plate. The first air inlet is formed on the first cover plate, and the air outlet is formed by the first cover plate, the second cover plate, and the side wall.

4. The fan module of claim 3, wherein, A first annular groove is formed on the first cover plate, the first annular groove facing the first silencing ring.

5. The fan module of claim 4, wherein, A second annular groove is formed on the second cover plate, and the second annular groove faces the second silencing ring.

6. The fan module of claim 4, wherein, The distance between the first silencing ring and the bottom of the first annular groove is equal to the shortest distance between the fan blade and the first cover plate.

7. The fan module as described in claim 3, characterized in that, A second airflow is drawn into the space between the plurality of fan blades from the second side of the fan body. The second airflow is driven by the plurality of fan blades and sent out toward the air outlet side of the fan body. The flow rate of the second airflow is less than the flow rate of the first airflow. The module housing further includes a second air inlet, which is located opposite the second side of the fan body.

8. The fan module of any one of claims 1 to 7, wherein, The radius of the second silencing ring is less than or equal to the radius of the first silencing ring.

9. The fan module of claim 8, wherein, Each blade is an S-shaped blade, and each blade includes a blade connecting end, a curvature reversal point, and a blade free end. The blade connecting end is connected to the hub, and the second noise reduction ring is located between the curvature reversal point and the blade free end.

10. The fan module of claim 8, wherein, The multiple fan blades together define an air intake zone and a pressurization zone, the pressurization zone surrounding the air intake zone, and the second noise reduction ring located within the pressurization zone.

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