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cooling fan

A heat dissipation fan and fan frame technology, which is applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve problems such as loud noise, energy loss, and uneven pressure distribution

Inactive Publication Date: 2016-10-12
FURUI PRECISE COMPONENT (KUNSHAN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the height of the side wall of the flow channel is greater than the height of the fan blade, the airflow pressure in the area where the fan blade is directly facing the fan frame is greater than that in other areas where the fan frame is higher than the fan blade, resulting in uneven pressure distribution, which in turn causes the phenomenon of airflow rewinding, not only Loss of energy, but also cause a lot of noise

Method used

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Embodiment Construction

[0018] see figure 1 The heat dissipation fan 100 provided by the first embodiment of the present invention is a centrifugal fan, which includes a fan frame 10 and an impeller 20 for connecting with a heat sink and heat-generating electronic components (not shown) to enhance the heat dissipation effect of the heat-generating electronic components.

[0019] Please also see figure 2 , the fan frame 10 includes a base 11 and a top plate 12 covering the base 11 , the two enclose to form a receiving space 13 for receiving the impeller 20 .

[0020] The base 11 includes a bottom plate 111 and a sidewall 112 extending upward from a periphery of the bottom plate 111 . The side wall 112 includes a lower edge 1122 close to the bottom plate 111 and an upper edge 1121 opposite to the lower edge 1122 . The bottom board 111 and the top board 12 are parallel to and facing each other. The upper edge 1121 of the side wall 112 is connected to the top board 12 . An air inlet 14 is respective...

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Abstract

Disclosed is a cooling fan. The cooling fan comprises a fan frame and an impeller which is accommodated in the fan frame and provided with a plurality of fan blades. The fan frame comprises a bottom base provided with a side wall which encircles the fan blades and right opposite to tips of the fan blades. The inner surface of the side wall recesses to the outside of the fan frame, so that airflow pressure difference between the fan blades and the inner surface of the side wall is reduced when the cooling fan runs, reverse involving of the airflow is avoided, and noises and energy loss are decreased.

Description

technical field [0001] The invention relates to a cooling fan, in particular to a fan frame and fan blade structure of the cooling fan. Background technique [0002] At present, in a computer, a heat dissipation module composed of a heat pipe, a heat dissipation fin group, and a heat dissipation fan is often used to dissipate heat from the heat-generating electronic components. The heating electronic component transmits heat to the cooling fin group through the heat pipe, and the cooling fin group is arranged at the air outlet of the cooling fan. The airflow generated by the heat dissipation fan blows to the heat dissipation fin set and exchanges heat with the heat dissipation fin set, thereby dissipating heat. Therefore, the cooling fan plays an extremely important role in the cooling module. [0003] A traditional cooling fan includes a fan frame and an impeller accommodated in the fan frame, and fan blades are arranged around the impeller. The side wall of the flow cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/42F04D29/00
Inventor 郑年添刘智仁
Owner FURUI PRECISE COMPONENT (KUNSHAN) CO LTD