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TaiWan SAN JU International Electrical Machinery CO.,LTD.Shenzhen Sanju Electric Machinery Co.,LTD.Sanju Technology and electrical machinery CO.,LTD.

Design Idea of Non-return Low Noise Computer Cooling Fan-Taiwans Three Giant Fans

Back to list Release date: May 13, 2019

The existing notebook computer fan configuration structure comprises a computer shell, a heat dissipation seat, a heat source and an axial flow fan, wherein the shell is provided with an air inlet part positioned at the bottom surface and an air outlet part positioned at one side surface; The heat dissipation seat is long and is covered in the shell corresponding to the air inlet part; after being assembled in the shell, the heat dissipation seat and the shell form a heat dissipation chamber; an open end part of the heat dissipation seat and the air outlet part of the shell form an air outlet after being assembled; The heat source is tightly abutted against the top surface of the heat dissipation seat; The axial fan is arranged in the heat dissipation chamber in parallel corresponding to the air inlet part. However, the existing fan placement method has the following disadvantages:

1.Vertical backflow of fans:the fans are arranged in parallel between the air inlet part and the heat dissipation surface of the heat dissipation seat, so that the air inlet direction of the fans is vertical as indicated by arrows, which is easy to cause vertical backflow rebounded at the air inlet source.

2.It is easy to generate larger noise:the backflow of the air source interferes with the fan blades, which is easy to cause larger noise.

3.The service life of the fan is shortened:the direct contact between the fan bearing and the side of the heat dissipation seat facing the heat source is also easy to be damaged by heat, thus shortening the service life.

The disadvantage of the fan in the prior art is that the fan is vertical concave flow, which is easy to generate larger noise and the service life of the fan is shortened. A backflow-free low-noise computer cooling fan comprises a computer shell. Has a second air inlet part and an air outlet part locate at that computer shell part; The heat dissipation seat is covered in the shell corresponding to the first air inlet part and forms two cooling chambers which are open with the shell, the two cooling parts of the heat dissipation seat and the shell form two air inlets and air outlets respectively corresponding to the second air inlet part and the air outlet part, and the second air inlet part has an air inlet direction; A heat source abutting against the heat dissipation seat; The axial flow fan is arranged in the heat dissipation chamber corresponding to the air inlet part and deflects the fan by an angle along the air inlet direction, so that the air originates from the air inlet of the first and second air inlet parts and disperses the heat source. In this way, the fan is deflected by an angle to reduce the backflow of the fan, and one side of the shell is additionally provided with an air inlet part to increase the heat dissipation area and prolong the service life.


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