Heat dissipation system of portable electronic device

Patent metadata

Field	Value
Publication number	US-2022132700-A1
Application number	US-202117471176-A
Country	US
Kind code	A1
Filing date	Sep 10, 2021
Priority date	Oct 26, 2020
Publication date	Apr 28, 2022
Grant date	—

Abstract

A heat dissipation system of portable electronic device includes a body, at least one fan and at least one spacing member. At least one heat source of the portable electronic device is arranged in the body. The fan is a centrifugal fan disposed in the body. The fan has at least one flow inlet located in the axial direction and at least one flow outlet located in the radial direction. The spacing member is disposed on at least one of the body or the fan to form a stratified air flow in the body along the axial direction. The stratified air flows into the fan through the flow inlet and out of the fan through the flow outlet respectively.

First claim

What is claimed is:

1 . A heat dissipation system of a portable electronic device, comprising:
a body, in which at least one heat source of the portable electronic device is arranged; at least one fan, which is a centrifugal fan, arranged in the body, wherein the fan has at least one flow inlet located in an axial direction and at least one flow outlet located in a radial direction; and at least one spacing member, disposed on at least one of the body or the fan to form a stratified air flow in the body along the axial direction, wherein the stratified air flow flows into the fan through the flow inlet and flows out of the fan through the flow outlet.

2 . The heat dissipation system of the portable electronic device according to claim 1 , wherein the at least one spacing member comprises a first spacing member arranged on part of a periphery of the fan and a second spacing member arranged on an inner wall of the body, the first spacing member, the second spacing member, the body and the fan form an inflow channel, and the inflow channel is connected to the flow inlet.

3 . The heat dissipation system of the portable electronic device according to claim 2 , wherein the inflow channel and the flow outlet are located on opposite sides of the fan.

4 . The heat dissipation system of the portable electronic device according to claim 2 , wherein the first spacing member forms a notch on an outer surface of the fan, and the notch and the flow outlet are located on different sides of the fan.

5 . The heat dissipation system of the portable electronic device according to claim 2 , wherein the fan has two flow outlets located in different radial directions, one of the flow outlets faces the outside of the body, and the other flow outlet faces the inside of the body, and the two flow outlets have the same opening size along the axial direction.

6 . The heat dissipation system of the portable electronic device according to claim 1 , further comprising a circuit board, wherein the at least one spacing member comprises a first spacing member arranged on part of a periphery of the fan and a second spacing member arranged on an inner wall of the body, the first spacing member, the second spacing member, the body, the fan and the circuit board form an inflow channel, and the inflow channel is connected to the flow inlet.

7 . The heat dissipation system of the portable electronic device according to claim 6 , wherein the inflow channel and the flow outlet are located on the same side of the fan.

8 . The heat dissipation system of the portable electronic device according to claim 6 , wherein the first spacing member forms a notch on the fan, and the notch and the flow outlet are located on the same side of the fan.

9 . The heat dissipation system of the portable electronic device according to claim 6 , wherein the fan has two flow outlets located in different radial directions, one of the flow outlets faces the outside of the body, and the other flow outlet faces the inside of the body, and the two flow outlets have different opening sizes along the axial direction.

10 . The heat dissipation system of the portable electronic device according to claim 6 , wherein the fan has two flow outlets located in different radial directions, one of the flow outlets faces the outside of the body, and the other flow outlet faces the inside of the body, and the two flow outlets have the same opening size along the axial direction.

11 . The heat dissipation system of the portable electronic device according to claim 10 , wherein the flow outlet facing the inside of the body and the inflow channel are located on the same side of the fan.

12 . The heat dissipation system of the portable electronic device according to claim 10 , wherein the flow outlet facing the inside of the body has a first sub-flow outlet and a second sub-flow outlet, and an opening size of the first sub-flow outlet along the axial direction is smaller than an opening size of the second sub-flow outlet.

13 . The heat dissipation system of the portable electronic device according to claim 12 , wherein the fan further has a side wall, which is located between the first sub-flow outlet and the inflow channel along the axial direction.

14 . The heat dissipation system of the portable electronic device according to claim 1 , wherein an orthographic projection of the inflow channel in the axial direction and an orthographic projection of the flow outlet in the axial direction are staggered.

15 . The heat dissipation system of the portable electronic device according to claim 1 , wherein the spacing member is a circuit board, which is arranged in the body and annularly connected to at least a part of the fan to stratify an internal space of the body, and the flow outlet is located at one of the layers.

16 . The heat dissipation system of the portable electronic device according to claim 15 , wherein the fan abuts against the body along the axial direction.

17 . The heat dissipation system of the portable electronic device according to claim 15 , further comprising another spacing member arranged along a periphery of the fan and abutting between the fan and the body.

18 . The heat dissipation system of the portable electronic device according to claim 15 , wherein the fan has two flow outlets located in different radial directions, one of the flow outlets faces the outside of the body, and the other flow outlet faces the inside of the body and is located at one of the layers, the entire fan except for the flow outlet facing the outside of the body is all annularly connected to the circuit board.

19 . The heat dissipation system of the portable electronic device according to claim 18 , further comprising a heat dissipation fin disposed in the body and facing forward the flow outlet facing the outside of the body, the heat dissipation fin and the circuit board form a closed contour, and the fan is located in the closed contour.

20 . The heat dissipation system of the portable electronic device according to claim 15 , wherein another layer of the internal space of the body is not provided with the flow outlet, the body further has a plurality of openings located at another layer.

Assignees

• Acer Inc

Inventors

• Chen Tsung-Ting
• Liao Wen-Neng
• Hsieh Cheng-Wen
• Lin Yu-Ming
• Chen Wei-Chin
• Lin Kuang-Hua
• Wang Chun-Chieh
• Kuo Shu-Hao

Classifications

• G06F1/203 Primary

  for portable computers, e.g. for laptops · CPC title

• G06F1/1616

  with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position · CPC title

• H05K7/20172 Primary

  Fan mounting or fan specifications · CPC title

• H05K7/2039

  characterised by the heat transfer by conduction from the heat generating element to a dissipating body (arrangements for increasing/decreasing heat-transfer, e.g. fins details, F28F13/00) · CPC title