Heat dissipation system and method for making same

• US 20070068654A1
• Filed: 05/12/2006
• Published: 03/29/2007
• Est. Priority Date: 09/23/2005
• Status: Active Grant

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Chang, Jen-Tsorng
• Granted Patent: US 7,694,725 B2
• Time in Patent Office: Days
• US Class Current: 165/104.210
• CPC Class Codes: F28D 15/0233 the conduits having a particular shape, e.g. non-circular cross-section, annular F28D15/0241, F28D15/0266 take precedence
• CPC Class Codes: F28D 15/04 with tubes having a capillary structure
• CPC Class Codes: F28D 15/046 characterised by the material or the construction of the capillary structure
• CPC Class Codes: H01L 23/427 Cooling by change of state, e.g. use of heat pipes by liquefied gas H01L23/445
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: Y10T 29/49353 Heat pipe device making

Abstract

A heat dissipation system and a making method thereof are disclosed in accordance with a preferred embodiment. The heat dissipation system mainly includes a body, a cover, and a working fluid. The body includes an evaporation chamber having a first side entryway and a first side outlet, a condensation chamber having a second side entryway and a second side outlet, an elongated evaporation passage configured for intercommunicating the first side outlet with the second side entryway, and an elongated condensation passage configured for intercommunicating the second side outlet with the first side entryway. The cover is hermetically secured to the body. The working fluid is contained in the body.

Claims

1. A heat dissipation system, comprising:

a body comprising;

an evaporation chamber having a first side entryway and a first side outlet;

a condensation chamber having a second side entryway and a second side outlet;

an elongated evaporation passage configured for intercommunicating the first side outlet with the second side entryway; and

an elongated condensation passage configured for intercommunicating the second side outlet with the first side entryway;

a cover hermetically secured to the body; and

a working fluid contained in the body.

2. The heat dissipation system of claim 1, wherein the evaporation chamber comprises a plurality of first spacer plates configured for forming a periphrastic passage inside the evaporation chamber.

3. The heat dissipation system of claim 2, wherein the first spacer plates are parallel to one another and are arranged uniformly inside the evaporation chamber.

4. The heat dissipation system of claim 2, wherein the evaporation chamber comprises a first interior sidewall and a first exterior sidewall opposite to the first interior sidewall, the first spacer plates alternately extending from the first interior and exterior sidewalls to form a periphrastic passage inside the evaporation chamber.

5. The heat dissipation system of claim 2, wherein the body comprises an evaporation interior sidewall, an evaporation exterior sidewall, a condensation interior sidewall, and a condensation exterior sidewall, the evaporation passage being defined between the evaporation interior and exterior sidewalls, the condensation passage being defined between the condensation interior and exterior sidewalls, the first spacer plates alternately extending from two respective end portions adjacent the evaporation chamber of the evaporation interior/exterior sidewalls and the condensation exterior/interior sidewalls.

6. The heat dissipation system of claim 1, wherein the condensation chamber comprises a plurality of second spacer plates configured for forming a periphrastic passage inside the condensation chamber.

7. The heat dissipation system of claim 6, wherein the second spacer plates are parallel to one another and are arranged uniformly inside the evaporation chamber.

8. The heat dissipation system of claim 6, wherein the condensation chamber comprises a second interior sidewall and a second exterior sidewall opposite to the second interior sidewall, the first spacer plates alternately extending from the second interior and exterior sidewalls.

9. The heat dissipation system of claim 6, wherein the body comprises an evaporation interior sidewall, an evaporation exterior sidewall, a condensation interior sidewall, and a condensation exterior sidewall, the evaporation passage being defined between the evaporation interior and exterior sidewalls, the condensation passage being defined between the condensation interior and exterior sidewalls, the second spacer plates alternately extending from two respective end portions adjacent the condensation chamber the evaporation interior/exterior sidewalls and the condensation exterior/interior sidewalls.

10. The heat dissipation system of claim 6, wherein each of the second spacer plates defines at least one opening cavity towards the cover.

11. The heat dissipation system of claim 10, wherein the cover defines a plurality of airflow orifices each gaseous communicating with the at least one cavity of one respective second spacer plate.

12. The heat dissipation system of claim 11, further comprising a plurality of fins formed on the cover adjacent the airflow orifices.

13. The heat dissipation system of claim 1, further comprising a fan disposed adjacent the condensation chamber.

14. The heat dissipation system of claim 1, further comprising a wick applied to inner walls of the condensation passage.

15. The heat dissipation system of claim 1, further comprising a pump disposed in the condensation chamber to accelerating circulation of the working fluid between the condensation chamber and the evaporation chamber.

16. A method for making a heat dissipation system, comprising the steps of:

forming a body, the body comprising an evaporation chamber having a first side entryway and a first side outlet, a condensation chamber having a second side entryway and a second side outlet, an elongated evaporation passage configured for intercommunicating the first side outlet with the second side entryway, and an elongated condensation passage configured for intercommunicating the second side outlet with the first side entryway;

forming a cover;

containing a working fluid in the body; and

hermetically securing the cover to the body.

17. The method of claim 16, further comprising steps of:

forming a plurality of first spacer plates inside the evaporation chamber, and forming a plurality of second spacer plates inside the condensation chamber.