# US 2008/0185128 A1 · Flat Plate-Type Heat Pipe

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- Number: US 2008/0185128 A1
- Document ID: US20080185128A1
- Status: Published application
- Kind: A1
- Application number: 11/815,364
- Filed: 2006-01-10
- Published: 2008-08-07
- Earliest claimed: 2005-04-19
- Inventors: Seok Hwan Moon; Gunn Hwang; Sang Choon Ko; Sung Weon Kang; Chang Auck Choi
- Web page: https://patentgrep.com/patent/US20080185128A1

## CPC

- F28D 15/046: {characterised by the material or the construction of the capillary structure}
- F28D 15/0233: {the conduits having a particular shape, e.g. non-circular cross-section, annular (F28D15/0241, F28D15/0266 take precedence)}
- F28F 1/022: {with multiple channels}
- 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)
- F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16)

## Abstract

Provided is a flat plate-type heat pipe formed of a flat pipe having a predetermined through-hole formed therein and a plurality of grooves extending from an inner surface of the through-hole in a longitudinal direction so that, while the interior of the heat pipe is in a vacuum state, heat in the heat pipe is discharged to the exterior due to a phase change of between liquid and gaseous states of working fluid and the working fluid flows by a capillary force produced from the plurality of grooves, whereby it is possible to obtain a strong capillary force and an excellent cooling effect while it is manufactured through a simple process.

## Claims

### Claim 1

A flat plate-type heat pipe including: a flat pipe having a predetermined through-hole formed therein; and a plurality of grooves extending from an inner surface of the through-hole in a longitudinal direction, wherein, while the interior of the heat pipe is in a vacuum state, heat in the heat pipe is discharged to the exterior due to a phase change of between liquid and gaseous states of working fluid, and the working fluid flows by a capillary force produced from the plurality of grooves.

### Claim 2 (depends on 1)

The flat plate-type heat pipe according to claim 1, further comprising a separation layer for forming a plurality of flow paths in the through-hole.

### Claim 3 (depends on 1)

The flat plate-type heat pipe according to claim 1, wherein each of the plurality of grooves has at least one corner from which the capillary force is produced.