Heat dissipating apparatus and electronic device

Patent metadata

Field	Value
Publication number	US-9846461-B2
Application number	US-201414175368-A
Country	US
Kind code	B2
Filing date	Feb 7, 2014
Priority date	Feb 8, 2013
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A heat dissipating apparatus includes a frame, an elastic body, a magnetic member and a coil. The frame has an opening. The elastic body is disposed on the frame, and the frame and the elastic body define a space. The magnetic member is located corresponding to the space and disposed at one side of the elastic body. The coil is located corresponding to the periphery of the space and disposed on the frame. An electronic device with the heat dissipating apparatus is also disclosed.

First claim

What is claimed is:

1. A heat dissipating apparatus, comprising:
a frame having an opening;
an elastic body disposed on the frame, wherein the frame and the elastic body define a space;
a coil located corresponding to the periphery of the space and disposed on the frame, and configured to induce an electromagnetic force as current flows through the coil;
a magnetic member located corresponding to the space and disposed at one side of the elastic body, and configured to carry the elastic body to vibrate back and forth when driven by the electromagnetic force induced as current flows through the coil, so as to drive an airflow to flow from inside of the frame to outside of the frame through the opening, wherein the magnetic member and the coil are disposed at two opposite side of the elastic body; and
a non-return valve added to the opening so that the airflow at the opening is controlled in one direction only.

2. The heat dissipating apparatus of claim 1 , wherein the magnetic member and the coil are arranged alternately.

3. The heat dissipating apparatus of claim 1 , wherein the frame has at least one channel connecting to the opening.

4. The heat dissipating apparatus of claim 1 , further comprising:
a weighting member disposed on the magnetic member.

5. The heat dissipating apparatus of claim 1 , wherein the elastic member comprises a composite material with different elastic coefficients.

6. The heat dissipating apparatus of claim 5 , wherein a portion of the elastic body close to a center of the magnetic member is made of a material with a higher elastic coefficient, and another portion of the elastic body close to the periphery of the magnetic member is made of a material with a lower elastic coefficient.

7. The heat dissipating apparatus of claim 5 , wherein the elastic body is a natural latex film with different elastic coefficients.

8. The heat dissipating apparatus of claim 1 , wherein the elastic member is made of a general plastic film.

9. The heat dissipating apparatus of claim 1 , wherein the elastic body is disposed between the frame and the coil.

10. The heat dissipating apparatus of claim 1 , wherein the frame has a recess, and the coil is disposed in the recess.

11. The heat dissipating apparatus of claim 1 , wherein the frame has a protruding portion, and the elastic member has a concave portion fitting to the protruding portion.

12. The heat dissipating apparatus of claim 11 , further comprising a fixing member for fixing the elastic member on the frame.

13. The heat dissipating apparatus of claim 12 , wherein the fixing member is a flexible concentric ring, and a diameter of the fixing member is slightly larger than that of the recess.

14. The heat dissipating apparatus of claim 1 , wherein the frame comprises an outer frame and a frame body disposed in the outer frame, wherein the frame body has the opening and the elastic body is disposed on the frame body.

15. The heat dissipating apparatus of claim 1 , wherein the elastic body and the magnetic member are controlled by signals with specific waveforms outputted to the coil by adjusting a voltage value or a current frequency.

16. The heat dissipating apparatus of claim 15 , wherein the specific waveforms are sine waves, square waves or triangle waves.

17. The heat dissipating apparatus of claim 1 , wherein a periphery of the frame is an L-shaped structure, and the coil is outside the elastic body.

18. An electronic device, comprising: a heat source; and a heat dissipating apparatus disposed adjacent to the heat source, the heat dissipating apparatus comprising: a frame having an opening; an elastic body disposed on the frame, wherein the frame and the elastic body define a space; a coil located corresponding to the periphery of the space and disposed on the frame, and configured to induce an electromagnetic force as current flows through the coil; ad a magnetic member located corresponding to the space and disposed at one side of the elastic body and configured to carry the elastic body to vibrate back and forth when driven by the electromagnetic force induced as current flows through the coil, so as to drive an airflow to flow from inside of the frame to outside of the frame through the opening, wherein the magnetic member and the coil are disposed at the one side and a second opposite side of the elastic body; and a thermal conductive module connected with the heat source to transmit the heat generated by the heat source to the thermal conductive module.

19. The electronic device of claim 18 , further comprising a wall configured at the periphery of the heat dissipating apparatus to define a flow path for limiting the air to flow toward the thermal conductive module or the heat source.

20. The electronic device of claim 18 , further comprising a heat pipe connected with the heat source so that the heat generated by the heat source is transmitted to the thermal conductive module through the heat pipe.

21. The electronic device of claim 18 , further comprising a housing designed with a hole located corresponding to the opening.

22. An electronic device, comprising: a heat source; and a heat dissipating apparatus disposed adjacent to the heat source, the heat dissipating apparatus comprising: a frame having an opening; an elastic body disposed on the frame, wherein the frame and the elastic body define a space; a coil located corresponding to the periphery of the space and disposed on the frame, and configured to induce an electromagnetic force as current flows through the con; a magnetic member located corresponding to the space and disposed at one side of the elastic body and configured to carry the elastic body to vibrate back and forth when driven by the electromagnetic force induced as current flows through the coil, so as to drive an airflow to flow from inside of the frame to outside of the frame through the opening, wherein the magnetic member and the coil are disposed at the one side and a second opposite side of the elastic body; a housing designed with a hole located corresponding to the opening; and a check valve or non-return valve disposed at the opening so that the airflow direction at the opening is controlled to one way only.

23. The electronic device of claim 22 , further comprising a thermal conductive module connected with the heat source to transmit the heat generated by the heat source to the thermal conductive module.

24. The electronic device of claim 23 , further comprising a wall configured at the periphery of the heat dissipating apparatus to define a flow path for limiting the air to flow toward the thermal conductive module or the heat source.

25. The electronic device of claim 23 , further comprising a heat pipe connected with the heat source so that the heat generated by the heat source is transmitted to the thermal conductive module through the heat pipe.

Assignees

• Delta Electronics Inc

Inventors

• Tang Chung-Hung
• Chen Shih-Chou
• Chiu Chun-Lung
• Lu Chao-Wen
• Lin Chun-Nan
• Hsu Fu-Mei

Classifications

• G06F1/203 Primary

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

• H05K7/20172

  Fan mounting or fan specifications · CPC title