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Radiating fan

A technology for cooling fans and fan blades, which is used in instruments, electrical digital data processing, digital data processing components, etc., and can solve problems such as large noise value, large noise, and mixed flow.

Active Publication Date: 2009-01-21
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the current blade design makes the bottom edge of the blade horizontal, and the flow velocity near the end of the blade is the fastest, the closer to the end edge of the blade, the more air volume will flow in and out, so when the air flow and the support rod 13 When in contact, there will be mixed flow and a lot of noise. This is due to the combination of the horizontal blade 121 and the support rod 13. The distance h between the two is short. When the airflow passes through it, it will be excited in a short time. Very high noise level and produces poor sound quality

Method used

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Examples

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Embodiment Construction

[0045] First, see figure 2 , which shows the first preferred embodiment of the cooling fan of the present invention. The radiating fan includes an outer frame 20; a base 21 arranged in the outer frame 20; Rods or stator blades 23 are located on the air outlet side of the cooling fan. Certainly, the support rod or the stationary vane 23 can also be arranged on the air inlet side of the cooling fan, or be located on the air inlet side and the air outlet side of the cooling fan at the same time. This cooling fan has an impeller 22, has a hub 221 and a plurality of fan blades 222 that are arranged around the hub, and the top peripheral edge of the hub 221 is a slope 221a to guide more air flow to the fan more smoothly. Ye 222. The shape of the frame is in addition to the figure 2 Instead of being shown as a square configuration, it could also be a rectangular or circular configuration. The outer frame 20 , the base 21 and the plurality of support rods or vanes 23 can be mad...

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Abstract

A heat emission fan with an up forward flow guider comprises a frame, an impeller formed by a wheel hub and motive blades around the hub, a base fixed in the frame to support the impeller, and a flow guide set fixed in between the base and the frame. One end of the flow guide set which is fixed to the windward side or the lee side inclines a first angle to the horizontal line vertical to the axes.

Description

technical field [0001] The invention relates to a cooling fan, in particular to an axial flow cooling fan. Background technique [0002] In general electronic products (such as computers), since the electronic components in them generate a lot of heat during operation, if they are kept at high temperature, it will easily lead to wear and tear of the electronic components and shorten their lifespan. Therefore, in order to prevent electronic components from malfunctioning, cooling fans are generally provided therein to dissipate the heat generated inside to the outside. [0003] see figure 1 , which is a traditional commonly used axial flow fan, the axial flow fan has a housing 10, a motor 11 and an impeller 12. The casing 10 has a base 14 for receiving the motor 11 , and a plurality of strip-shaped support rods 13 are provided at the air outlet end of the casing 10 . When the motor drives the impeller 12 to rotate, the blades 121 on it will drive the airflow to blow out to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/66F04D29/54F04D29/38F04D29/02G06F1/20
Inventor 李金鸿张楯成林国正黄文喜张秀贞
Owner DELTA ELECTRONICS INC
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