Electronic device with heat dissipation modules

Patent metadata

Field	Value
Publication number	US-10694638-B1
Application number	US-201916414326-A
Country	US
Kind code	B1
Filing date	May 16, 2019
Priority date	May 16, 2019
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A system for cooling an electronic device applying the Peltier effect includes case, flow guiding device, heat dissipation module, and electronic component needing cooling in specific regions. The case has air inlet and heat outlet enclosing an internal space. The internal space includes cooling and heat exhausting regions. The flow guiding device is disposed around the air inlet to guide cooling medium into the internal space. The heat dissipation module includes a cooling device with hot and cold sides, the heat being exchanged from cold side to hot side. The cold side is coupled to the cooling region, the hot side to the heat exhausting region. The electronic component is coupled to the cooling region. The cooling medium flowing through the cooling region is cooled by the cold side and decreases the overall temperature of the electronic component or specific regions thereof.

First claim

What is claimed is:

1. An electronic device comprising:
a case enclosing an internal space, wherein the internal space comprises a cooling region, a heat source region and a heat releasing region;
a first flow guiding device being adapted for guiding a cooling medium into the internal space;
a heat dissipation module comprising a first cooling device having a first cold side and a first hot side, the first cooling device being adapted for exchanging heat from the first cold side to the first hot side, wherein the first cold side is adjacent to the cooling region, and the first hot side is adjacent to the heat releasing region;
an electronic component disposed on the cooling region, wherein the cooling medium is cooled by the first cold side, and flows through the cooling region to decrease a temperature of the electronic component, wherein a temperature of the cooling medium is increased when flows through the heat source region, then the temperature of the cooling medium is decreased by the first cold side, and the cooling medium flows through the cooling region to decrease the temperature of the electronic component;
a first temperature detector detecting a temperature of the heat source region and obtaining a first detection temperature;
a second temperature detector detecting a temperature of the cooling region and obtaining a second detection temperature; and
a control circuit adapted for triggering the first flow guiding device according to the first detection temperature in a first phase, and triggering the first flow guiding device according to the first detection temperature and the second detection temperature in a second phase after the first phase.

2. The electronic device of claim 1 , wherein the heat dissipation module further comprises:
a first heat sink fin contacting with the first cold side; and
a second heat sink fin contacting with the first hot side.

3. The electronic device of claim 2 , further comprising a second flow guiding device adapted to cool the second heat sink fin.

4. The electronic device of claim 2 , wherein the heat dissipation module further comprises a second cooling device having a second cold side contacting with the first heat sink fin and a second hot side contacting with the second heat sink fin.

5. The electronic device of claim 4 , wherein the first cooling device and the second cooling device are alternately enabled to perform thermal conversion.

6. The electronic device of claim 4 , wherein the first cooling device and the second cooling device are thermoelectric cooling devices.

7. The electronic device of claim 1 , wherein the heat dissipation module comprises a baffle between the cooling region and the heat releasing region.

8. The electronic device of claim 1 , wherein the second phase is initialized when the second detection temperature exceeds a predetermined threshold temperature.

9. An electronic device comprising:
a case enclosing an internal space, wherein the internal space comprises a cooling region, a heat releasing region and a heat source region;
a first flow guiding device being adapted for guiding a cooling medium into the internal space;
a heat dissipation module disposed on the cooling region for cooling the cooling medium;
an electronic component disposed on the cooling region, wherein a temperature of the cooling medium is increased when flows through the heat source region, then the temperature of the cooling medium is decreased by the heat dissipation module, and the cooling medium flows through the cooling region to decrease a temperature of the electronic component;
a first temperature detector detecting a temperature of the heat source region and obtaining a first detection temperature;
a second temperature detector detecting a temperature of the cooling region and obtaining a second detection temperature; and
a control circuit adapted for triggering the first flow guiding device according to the first detection temperature in a first phase, and triggering the first flow guiding device according to the first detection temperature and the second detection temperature in a second phase after the first phase.

10. The electronic device of claim 9 , wherein the second phase is initialized when the second detection temperature exceeds a predetermined threshold temperature.

11. The electronic device of claim 9 , wherein the heat dissipation module comprises a first cooling device having a first cold side and a first hot side, the first cooling device being adapted for exchanging heat from the first cold side to the first hot side, wherein the first cold side is adjacent to the cooling region, and the first hot side is adjacent to the heat releasing region.

12. The electronic device of claim 11 , wherein the heat dissipation module further comprises:
a first heat sink fin contacting with the first cold side; and
a second heat sink fin contacting with the first hot side.

13. The electronic device of claim 12 , further comprising a second flow guiding device adapted to cool the second heat sink fin.

14. The electronic device of claim 12 , wherein the heat dissipation module further comprises a second cooling device having a second cold side contacting with the first heat sink fin and a second hot side contacting with the second heat sink fin.

15. The electronic device of claim 14 , wherein the first cooling device and the second cooling device are alternately enabled to perform thermal conversion.

16. The electronic device of claim 14 , wherein the first cooling device and the second cooling device are thermoelectric cooling devices.

17. The electronic device of claim 9 , wherein the heat dissipation module comprises a baffle between the cooling region and the heat releasing region.

Assignees

• Nanning Fugui Prec Ind Co Ltd

Inventors

• Lin Huan-Ze
• Mi Yun-Nien

Classifications

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• H05K7/2039 Primary

  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

• H05K7/20209

  Thermal management, e.g. fan control · CPC title

• H05K7/20136

  Forced ventilation, e.g. by fans (H05K7/202 takes precedence) · CPC title

• F25B21/02

  using Peltier effect; using Nernst-Ettinghausen effect · CPC title