# US 2014/0150263 A1 · Manufacturing method of thin heat pipe

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- Number: US 2014/0150263 A1
- Document ID: US20140150263A1
- Status: Published application
- Kind: A1
- Application number: 13/732,415
- Filed: 2013-01-01
- Published: 2014-06-05
- Earliest claimed: 2012-12-04
- Assignees: Asia Vital Components Co., Ltd.
- Applicants: Asia Vital Components Co., Ltd.
- Inventors: Chun-Ming Wu
- Web page: https://patentgrep.com/patent/US20140150263A1

## CPC

- B23P 15/26: heat exchangers {or the like (making heat exchangers by methods covered by other subclasses B21D53/02)}
- B21C 37/154: {Making multi-wall tubes}
- B21C 37/155: {Making tubes with non-circular section (B21C37/151, B21C37/154 take precedence)}
- B21C 37/158: {Protrusions, e.g. dimples}
- F28D 15/046: {characterised by the material or the construction of the capillary structure}
- H10W 40/73: for cooling by change of state
- B23P 2700/09: Heat pipes
- Y10T 29/49353: Heat pipe device making
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- B21C: MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A manufacturing method of thin heat pipe includes steps of: providing a hollow tubular body and a mesh capillary structure; placing the mesh capillary structure into the tubular body; providing a tool and placing the tool into the mesh capillary structure; sintering the tubular body to make the mesh capillary structure sintered on an inner wall face of the tubular body and then taking out the tool; vacuuming the tubular body and filling a working fluid into the tubular body; sealing the tubular body; and pressing and flattening the tubular body into a flat form by means of mechanical processing. According to the manufacturing method of thin heat pipe, the mesh capillary structure can fully tightly attach to the inner wall face of the tubular body to keep the completeness of the tubular body and the completeness of the vapor-liquid circulation passageways in the heat pipe.

## Claims

### Claim 1

A manufacturing method of thin heat pipe, comprising steps of:
providing a hollow tubular body and a mesh capillary structure;
placing the mesh capillary structure into the tubular body;
providing a tool and placing the tool into the mesh capillary structure;
sintering the tubular body to make the mesh capillary structure sintered on an inner wall face of the tubular body and then taking out the tool;
pressing and flattening the tubular body into a flat form;
vacuuming the tubular body and filling a working fluid into the tubular body; and
sealing the tubular body by means of mechanical processing.

### Claim 2 (depends on 1)

The manufacturing method of thin heat pipe as claimed in claim 1, wherein the mechanical processing is pressing or rolling.

### Claim 3 (depends on 1)

The manufacturing method of thin heat pipe as claimed in claim 1, wherein in the step of placing the tool into the mesh capillary structure, the tool serves to make the mesh capillary structure fully tightly attached to the inner wall face of the tubular body.

### Claim 4 (depends on 1)

The manufacturing method of thin heat pipe as claimed in claim 1, wherein in the step of pressing and flattening the tubular body into a flat form, the mesh capillary structure in the tubular body is simultaneously flattened along with the tubular body and kept tightly attached to the inner wall face of the tubular body.

### Claim 5

A manufacturing method of thin heat pipe, comprising steps of:
providing a hollow tubular body and a mesh capillary structure;
placing the mesh capillary structure into the tubular body;
providing a tool and placing the tool into the mesh capillary structure;
sintering the tubular body to make the mesh capillary structure sintered on an inner wall face of the tubular body and then taking out the tool;
vacuuming the tubular body and filling a working fluid into the tubular body;
sealing the tubular body by means of mechanical processing; and
pressing and flattening the tubular body into a flat form.