Capillary structure of heat pipe

• US 20070240859A1
• Filed: 04/17/2006
• Published: 10/18/2007
• Est. Priority Date: 04/17/2006
• Status: Abandoned Application

• Current Assignee: Chaun-Choung Technology Corp.
• Original Assignee: Chaun-Choung Technology Corp.
• Inventors: Wang, Tony, Huang, Meng-Cheng, Tsai, Ming
• Application Number:
  US11/404,793
• Publication Number:
  US 20070240859A1
• Time in Patent Office: Days
• US Class Current: 165/104.260
• CPC Class Codes: F28D 15/0266 with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers F28D15/043 takes precedence
• CPC Class Codes: F28D 15/0275 Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
• 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

Abstract

A capillary structure of a heat pipe includes a hollow pipe body and a capillary structure adhered to the inner wall of the pipe body. The main part of the pipe body is provided with at least one heated section. The capillary structure within the heated section is constituted by sintered powder, and the capillary structure within the remaining portion of the main part of the pipe body is constituted by woven web or groove. By using two different kinds of capillary structures to form the capillary structure of the inner wall of the heat pipe, the heat pipe can withstand a heat source of higher temperature, and can also be suitable for a curved pipe.

Claims

1. A capillary structure of a heat pipe, comprising a hollow pipe body and a first kind of capillary structure and a second kind of capillary structure provided on the inner wall face of the pipe body, wherein

the main part of the pipe body is provided with at least one heated section, the inner wall face of the heated section is provided with the first kind of capillary structure, the inner wall face of the remaining portion of the main part of the pipe body is provided with the second kind of capillary structure, and the first kind of capillary structure is constituted by sintered powder.

2. The capillary structure of a heat pipe according to claim 1, wherein the heated section is provided at one end of the pipe body and the other end of the pipe body is provided with a condensed section.

3. The capillary structure of a heat pipe according to claim 1, wherein the heated section is provided at the middle of the pipe body and each of both ends of the pipe body is provided with a condensed section.

4. The capillary structure of a heat pipe according to claim 1, wherein the connecting points between the first and second kinds of capillary structures are overlapped with each other.

5. The capillary structure of a heat pipe according to claim 1, wherein the connecting points between the first and second kinds of capillary structures are tightly butted.

6. The capillary structure of a heat pip according to claim 1, wherein the second kind of capillary structure is woven webs.

7. The capillary structure of a heat pip according to claim 6, wherein the woven webs are made by weaving metallic wires to form the webs.

8. The capillary structure of a heat pip according to claim 1, wherein the second capillary structure is grooves.