HEAT PIPE

• US 20070267178A1
• Filed: 07/28/2006
• Published: 11/22/2007
• Est. Priority Date: 05/19/2006
• Status: Abandoned Application

• Current Assignee: Foxconn Technology Co., Ltd.
• Original Assignee: Foxconn Technology Co., Ltd.
• Inventors: HOU, CHUEN-SHU, LIU, TAY-JIAN, TUNG, CHAO-NIEN
• Application Number:
  US11/309,346
• Publication Number:
  US 20070267178A1
• Time in Patent Office: Days
• US Class Current: 165/104.260
• CPC Class Codes: F28D 15/046 characterised by the material or the construction of the capillary structure

Abstract

A heat pipe includes a casing (100) having an inner surface. A capillary wick (200) is attached to the inner surface of casing. The casing includes an evaporating section (400) for receiving heat, a condensing section (600) for releasing the heat and an adiabatic section (500) for transferring the heat from the evaporating section to the condensing section. The evaporating and condensing sections are made of metal material and the adiabatic section is made of nonmetallic material.

Claims

1. A heat pipe comprising:

a casing having an inner surface and defining an evaporating section for receiving heat, a condensing section for releasing the heat and an adiabatic section located between the evaporating and condensing sections for transferring the heat from the evaporating section to the condensing section, the evaporating and condensing sections being made of metal material, the adiabatic section being made of nonmetallic material;

a working fluid received in the casing and evaporated into vapor in the evaporating section and condensed into liquid in the condensing section; and

a capillary wick applied to the inner surface of the casing.

2. The heat pipe of claim 1, wherein the adiabatic section is made of macromolecule material.

3. The heat pipe of claim 1, wherein the nonmetallic material of the adiabatic section is one of plastic, resin, rubber, fiber and ceramic.

4. The heat pipe of claim 1, wherein the adiabatic section is made of a compound material of macromolecule material and inorganic material.

5. The heat pipe of claim 1, wherein the capillary wick at the evaporating and condensing sections is a sintered powder wick, and the capillary wick at the adiabatic section is a groove-type wick.

6. The heat pipe of claim 1, wherein the capillary wick at the evaporating and condensing sections is one of a sintered powder wick, a fine-mesh wick, bundles of fiber wick, a honeycombed wick, and a combination thereof.

7. The heat pipe of claim 1, wherein the capillary wick at the adiabatic section is one of a fine-mesh wick, bundles of fiber wick, a honeycombed wick, a fin-type wick, a pole-type wick, and a combination thereof.

8. The heat pipe of claim 7, wherein the fin-type wick at the adiabatic section consists of a plurality of fins extending from the inner surface of the adiabatic section.

9. The heat pipe of claim 7, wherein the pole-type wick at the adiabatic section consists of a plurality of parallel micro-poles extending from the inner surface of the adiabatic section.

10. A heat pipe comprising:

a casing having an evaporating section for receiving heat, a condensing section for releasing the heat and an adiabatic section between the evaporating and condensing sections, wherein the adiabatic section is made of nonmetallic material; and

a capillary wick disposed on an inner surface of the casing, the capillary wick consisting of a first layer corresponding to the evaporating section, a second layer corresponding to the adiabatic section and a third layer corresponding to the condensing section, wherein the second layer has a structure different from that of the first and third layers.

11. The heat pipe of claim 10, wherein the second layer of the capillary wick is integrally formed with the adiabatic section of the casing as a monolithic piece.

12. The heat pipe of claim 11, wherein the second layer of the capillary wick comprises a plurality of fins extending from the inner surface of the adiabatic section of the casing.

13. The heat pipe of claim 11, wherein the second layer of the capillary wick comprises a plurality of micro poles extending from the inner surface of the adiabatic section of the casing.

14. The heat pipe of claim 11, wherein the nonmetallic material is selected from one of plastic, resin, rubber, fiber and ceramic.