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Centrifugal fan and electronic equipment

A centrifugal fan and fan technology, which is applied to the structural parts of electrical equipment, mechanical equipment, electrical components, etc., can solve the problems of poor heat dissipation of electronic equipment and low performance of centrifugal fans

Active Publication Date: 2022-01-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional centrifugal fans have low performance and are not effective in cooling electronic equipment

Method used

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  • Centrifugal fan and electronic equipment
  • Centrifugal fan and electronic equipment
  • Centrifugal fan and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0116] The design of the second embodiment facilitates expanding the volume of the mounting groove 29b of the wheel 29 (compared with the first The installation groove 29b in the. For example Figure 17 As shown, the minimum distance s between the inner wall of the installation groove 29b and the slope 29d may be 0.01mm-1mm (endpoints included). If the minimum distance s is within this range, the reliable processing of the installation groove 29b can be ensured, and the structural strength of the wheel 29 can also be ensured, and at the same time, a larger installation groove 29b can be processed. When the volume of the installation groove 29b is large, a larger permanent magnet can be installed in the installation groove 29b, which can increase the rotation speed of the wheel 29, thereby helping to improve the heat dissipation performance of the centrifugal fan 26. In other embodiments, the minimum distance s between the inner wall of the installation groove 29b and the inc...

Embodiment 4

[0119] Embodiment 4 has both the technical effects of Embodiment 2 and Embodiment 3, that is, the minimum distance between the inner wall of the installation groove 29b and the inclined surface 29d is not lower than the processing threshold to meet the manufacturing requirements. The volume of the mounting groove 29b is expanded so that a larger permanent magnet can be installed, thereby increasing the rotating speed of the wheel disc 29 and improving the heat dissipation performance of the centrifugal fan 26; it can also increase the volume of the flow path between the blades, thereby increasing the pressure energy of the air and Static wind pressure, thereby enhancing the heat dissipation performance of the centrifugal fan 26.

[0120] Embodiments 1 to 4 describe different structures of the wheel 29 and the connection design of the fan blade 50 and the wheel 29 . The following embodiments will focus on describing the structure of the fan blade 50 , and the structure of the f...

Embodiment 5

[0122] In the fifth embodiment, the thickness of the front edge surface 50a and the trailing edge surface 50c of the fan blade 50 are smaller, and the thickness of the part between the front edge surface 50a and the trailing edge surface 50c is larger. For example, from the leading edge surface 50a to the trailing edge surface 50c, the thickness of the fan blade 50 may first increase and then decrease. Specific as Figure 21 As shown, from the leading edge surface 50a to the trailing edge surface 50c, the fan blade 50 can be divided into a Z1 part and a Z2 part. The Z1 part is bounded by the leading edge surface 50a and the section 50d, and the Z2 part is bounded by the section 50d and the trailing edge surface 50c. From the leading edge surface 50a to the section 50d, the thickness of the Z1 portion can gradually increase; from the section 50d to the trailing edge surface 50c, the thickness of the Z2 portion can gradually decrease, and the thickness at the section 50d is the ...

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PUM

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Abstract

The invention provides a centrifugal fan. The centrifugal fan comprises a fan shell, a wheel disc and a plurality of fan blades, wherein an air cavity with an outlet is defined by the fan shell, the inner side face of the air cavity comprises a volute tongue face and a flow guide face which are connected, and the edge, away from the volute tongue face, of the flow guide face coincides with the edge of the outlet; and the wheel disc is located in the air cavity, a circumferential face opposite to the inner side face of the air cavity in a spaced mode is arranged on the periphery of the wheel disc, and the wheel disc can rotate around the axis of the circumferential face. The interval between the circumferential face and the flow guide face is gradually increased in the rotating direction of the wheel disc. The fan blades are located in the air cavity and fixed to the wheel disc, and a gap is formed between any two adjacent fan blades. The invention further provides electronic equipment. The electronic equipment comprises an equipment shell, a heating device and the centrifugal fan. The equipment shell is provided with a containing cavity, a first ventilation opening and a second ventilation opening, the first ventilation opening is communicated with the containing cavity and the outside, and the second ventilation opening is communicated with the containing cavity and the outside; and the heating device and the centrifugal fan are both located in the containing cavity. The heat dissipation performance of the centrifugal fan can be improved.

Description

technical field [0001] The present application relates to the field of terminal equipment, in particular to a centrifugal fan and electronic equipment. Background technique [0002] Smartphones and other electronic devices have been closely related to users' daily life. With the continuous improvement of their display, sound effects, camera, charging and other specifications, their heat generation is also gradually increasing. In order to enhance heat dissipation, electronic equipment uses centrifugal fans for air cooling. Conventional centrifugal fans have low performance and are not effective in cooling electronic equipment. Contents of the invention [0003] The application provides a centrifugal fan and electronic equipment, which can improve the heat dissipation performance of the centrifugal fan and improve the heat dissipation effect of the centrifugal fan on the electronic equipment. [0004] In the first aspect, the application provides a centrifugal fan, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D17/08F04D29/42F04D29/44F04D29/28F04D29/30F04D29/66H05K7/20
CPCF04D17/08F04D29/4226F04D29/4233F04D29/441F04D29/281F04D29/30F04D29/666F04D29/667H05K7/20136
Inventor 刘佳驹陈丘靳林芳程欣
Owner HUAWEI TECH CO LTD