Cooling fan
A cooling fan and fan blade technology, which is used in the components of pumping devices for elastic fluids, non-variable-capacity pumps, machines/engines, etc., can solve the problems of slow airflow, poor heat dissipation, noise, etc. , to reduce the generation of eddy current, reduce the possibility, and increase the effect of heat dissipation
Active Publication Date: 2020-03-10
ACER INC
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Problems solved by technology
[0002] Existing axial flow fans are widely used in computer mainframes to dissipate heat. However, the performance of the mainframes of personal computers and servers has developed rapidly recently, and high-performance computer mainframes also generate a lot of waste heat. In order to avoid the accumulation of waste heat and cause the mainframe The operation is not good, how to make a high-flow fan to achieve good heat dissipation is an important goal at present
[0003] In addition, when the existing axial flow fan rotates, the airflow will flow along the surface of the blade. Due to the effect of viscous force, the flow velocity of the airflow on the surface of the blade will gradually slow down, and finally the airflow will separate from the surface of the blade. and form a vortex
The generation of vortex will reduce the air flow through the fan, resulting in poor cooling performance, and the vortex phenomenon will also cause noise problems
Method used
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[0038] figure 1 It is a three-dimensional schematic diagram of a heat dissipation fan according to an embodiment of the present invention, and it is viewed from a bottom-up perspective. figure 2 Shows figure 1 Top view of the cooling fan. Figure 3A to Figure 3D Respectively show partial cross-sectional views of cooling fans at different places, here is figure 2 Corresponding to the different profile lines A1~A4 shown Figure 3A ~ Figure 3D .
[0039] Please refer to figure 1 and figure 2 , in this embodiment, the cooling fan 100 is suitable for disposing in a mainframe computer (such as a laptop, a personal computer or a large server) to dissipate heat for electronic components in the mainframe computer, so as to avoid overheating of the mainframe computer due to the accumulation of waste heat. Here, the cooling fan 100 is, for example, an axial flow fan, which includes a hub 110 and a plurality of blade sets 120 . A plurality of fan blade sets 120 are disposed arou...
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Abstract
The invention provides a cooling fan. The cooling fan comprises a hub and a plurality of fan blade sets. The fan blade sets are arranged on the hub in a surrounding manner, each fan blade set comprises at least two fan blades, flow channels are formed between the fan blades, and the width of the flow channels decreases gradually along the rotation axis of the hub.
Description
technical field [0001] The invention relates to a cooling fan. Background technique [0002] Existing axial flow fans are widely used in computer mainframes to dissipate heat. However, the performance of the mainframes of personal computers and servers has developed rapidly recently, and high-performance computer mainframes also generate a lot of waste heat. In order to avoid the accumulation of waste heat and cause the mainframe How to make a high-flow fan to achieve good heat dissipation is an important goal at present. [0003] In addition, when the existing axial flow fan rotates, the airflow will flow along the surface of the blade. Due to the effect of viscous force, the flow velocity of the airflow on the surface of the blade will gradually slow down, and finally the airflow will separate from the surface of the blade. and form a vortex. The generation of vortex will reduce the air flow through the fan, resulting in poor cooling performance, and the vortex phenomeno...
Claims
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Login to View More IPC IPC(8): F04D29/32F04D29/66
CPCF04D29/325F04D29/666
Inventor 林光华谢铮玟廖文能
Owner ACER INC