US20060207749A1 - Multi-layer wick structure of heat pipe - Google Patents
Multi-layer wick structure of heat pipe Download PDFInfo
- Publication number
- US20060207749A1 US20060207749A1 US11/082,803 US8280305A US2006207749A1 US 20060207749 A1 US20060207749 A1 US 20060207749A1 US 8280305 A US8280305 A US 8280305A US 2006207749 A1 US2006207749 A1 US 2006207749A1
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- US
- United States
- Prior art keywords
- weaving
- wick
- layer
- heat pipe
- tubular member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
Definitions
- the present invention relates in general to a multi-layer wick structure of a heat pipe, and more particularly, to a multi-layer wick structure providing excellent capillary force and attachment to an interior surface of a heat pipe.
- the heat pipe has been applied in various types of electronic products for delivering large amount of heat without consuming significant power because of the characteristics of high thermal transmission capacity, high thermal transmission speed, high thermal conduction efficiency, light weight, none mobile element, simple structure and versatile applications.
- Conventional heat pipe includes a wick structure attached to an interior surface of a heat-pipe body.
- the wick structure includes weaving mesh that has capillary effect, such that a working fluid filled in the heat-pipe body can be used to deliver heat.
- multi-layer structure has been adapted in the heat pipe.
- FIG. 1 shows a conventional weaving mesh of a wick structure la which is curled into a multi-layer structure.
- a sintering process is required to attach the curled wick structure 1 a to the internal surface of the heat-pipe body 2 a .
- the weaving mesh of the wick structure 1 a is typically too soft to support itself.
- the multi-layer portion A formed by curling process makes the attachment worse.
- the wick structure 1 a is easily softened and collapsed due to the heat generated in the high-temperature sintering process.
- the present invention provides a multi-layer wick structure of a heat pipe with a finer weaving mesh of first wick layer attached inside the heat pipe and a coarser weaving mesh of the second wick layer supporting the first wick layer.
- the multi-layer wick structure can provide the excellent capillary force and attachment to an interior surface of a heat pipe.
- the multi-layer wick structure attached to a tubular member of a heat pipe includes a first weaving mesh of wick layer attached to an interior surface of the tubular member, and a second weaving mesh of wick layer encircled by the first wick layer so that the first wick layer is sandwich between the tubular member and the second wick layer.
- the first and the second weaving meshes of the wick layer include a plurality of first and second weaving wires, respectively, and the first weaving wire has the diameter smaller than that of the second weaving wire.
- FIG. 1 shows an a cross sectional view of a conventional heat pipe
- FIG. 2 shows the process of winding a multi-layer wick structure
- FIG. 3 shows the process for inserting the wick structure into a tubular member of a heat pipe
- FIG. 4 shows the open circular profile of the winded multi-layer wick structure
- FIG. 5 shows an enlarged view of a portion A in Figure.
- the heat pipe includes a tubular member 1 , a first wick layer 2 and a second wick layer 3 .
- the first and the second wick layers 2 and 3 include a first and a second weaving meshes 20 and 30 , respectively.
- the first wick layer 2 includes two first weaving meshes 20
- the second wick layer 3 includes one first weaving mesh 30 .
- the first and the second wick layers 2 and 3 can both include a plurality of weaving meshes. After the first and the second wick layers 2 and 3 overlaying each other, the wick structure is winded with the first weaving meshes 20 encircling the second weaving mesh 30 .
- the winded first and the second wick layers 2 and 3 are disposed into the hollow tubular member 1 .
- the first wick layer 2 is sandwiched between the tubular member 1 and the second wick layer 3 and securely attached to an interior surface 10 of the tubular member 1 .
- the first and the second weaving meshes 20 and 30 includes a plurality of first and second weaving wires 200 and 300 , respectively.
- the diameter of the first weaving wire 200 is smaller than the diameter of the second weaving wire 300 .
- the smaller weaving wires 200 are finer and softer to make the first weaving mesh 20 capably of providing excellent attachment to the interior surface 10 of the tubular member 1 and better capillary force to the working fluid filled in the tubular member 2
- the larger weaving wires 300 are coarser and harder to make the second weaving mesh 30 capably of providing better support effect of the wick structure.
- the second weaving mesh 30 of the second wick layer 3 can provide sufficient support to the first weaving mesh 20 so that the first wick structure 2 is not easily softened and peeled from the interior surface 10 of the tubular member 1 . Meanwhile, the second wick layer 3 can also provide more capillary force to transport the working fluid.
- first wick layer 2 has the finer weaving wires 200 compared to the coarser weaving wires 300 of the second wick layer 3 , the capillary force of the heat pipe is enhanced, while second wick layer 3 provides better support to the first wick layer 2 to ensure the first wick structure 2 can still attach on the interior surface 10 of the tubular member 1 without peeling at annealing.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Woven Fabrics (AREA)
Abstract
A multi-layer wick structure attached to a tubular member of a heat pipe includes a first weaving mesh of wick layer attached to an interior surface of the tubular member, and a second weaving mesh of wick layer encircled by the first wick layer so that the first wick layer is sandwich between the tubular member and the second wick layer. The first and the second weaving meshes of the wick layer include a plurality of first and second weaving wires, respectively, and the first weaving wire has the diameter smaller than that of the second weaving wire.
Description
- The present invention relates in general to a multi-layer wick structure of a heat pipe, and more particularly, to a multi-layer wick structure providing excellent capillary force and attachment to an interior surface of a heat pipe.
- The heat pipe has been applied in various types of electronic products for delivering large amount of heat without consuming significant power because of the characteristics of high thermal transmission capacity, high thermal transmission speed, high thermal conduction efficiency, light weight, none mobile element, simple structure and versatile applications. Conventional heat pipe includes a wick structure attached to an interior surface of a heat-pipe body. The wick structure includes weaving mesh that has capillary effect, such that a working fluid filled in the heat-pipe body can be used to deliver heat. To improve the capillary force and the amount of heat to be transferred by the wick structure, multi-layer structure has been adapted in the heat pipe.
-
FIG. 1 shows a conventional weaving mesh of a wick structure la which is curled into a multi-layer structure. When the curled wick structure la is inserted into theheat pipe body 2 a, a sintering process is required to attach the curled wick structure 1 a to the internal surface of the heat-pipe body 2 a. However, as the weaving mesh of the wick structure 1 a is typically too soft to support itself. The multi-layer portion A formed by curling process makes the attachment worse. As there provides no additional support structure, the wick structure 1 a is easily softened and collapsed due to the heat generated in the high-temperature sintering process. - To resolve the problems caused by the conventional heat pipe structure as described above, the Applicant, with many years of experience in this field, has developed a shrinkage-free sealing method and structure of heat pipe as described as follows.
- The present invention provides a multi-layer wick structure of a heat pipe with a finer weaving mesh of first wick layer attached inside the heat pipe and a coarser weaving mesh of the second wick layer supporting the first wick layer. Such that the multi-layer wick structure can provide the excellent capillary force and attachment to an interior surface of a heat pipe.
- Accordingly, the multi-layer wick structure attached to a tubular member of a heat pipe includes a first weaving mesh of wick layer attached to an interior surface of the tubular member, and a second weaving mesh of wick layer encircled by the first wick layer so that the first wick layer is sandwich between the tubular member and the second wick layer. The first and the second weaving meshes of the wick layer include a plurality of first and second weaving wires, respectively, and the first weaving wire has the diameter smaller than that of the second weaving wire.
- The objectives of the present invention will become obvious to those of ordinary skill in the art after reading the following detailed description of preferred embodiments.
- It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed.
- The above objects and advantages of the present invention will be become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:
-
FIG. 1 shows an a cross sectional view of a conventional heat pipe; -
FIG. 2 shows the process of winding a multi-layer wick structure; -
FIG. 3 shows the process for inserting the wick structure into a tubular member of a heat pipe; -
FIG. 4 shows the open circular profile of the winded multi-layer wick structure; and -
FIG. 5 shows an enlarged view of a portion A in Figure. - Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
- Referring to
FIGS. 2-4 , a multi-layer wick structure of a heat pipe is provided. The heat pipe includes atubular member 1, afirst wick layer 2 and asecond wick layer 3. - As shown in
FIG. 2 , the first and thesecond wick layers second weaving meshes first wick layer 2 includes twofirst weaving meshes 20, and thesecond wick layer 3 includes onefirst weaving mesh 30. However, the first and thesecond wick layers second wick layers first weaving meshes 20 encircling thesecond weaving mesh 30. - As shown in
FIGS. 3 and 4 , the winded first and thesecond wick layers tubular member 1. Such that thefirst wick layer 2 is sandwiched between thetubular member 1 and thesecond wick layer 3 and securely attached to aninterior surface 10 of thetubular member 1. - Further referring to
FIG. 5 , the first and thesecond weaving meshes second weaving wires first weaving wire 200 is smaller than the diameter of thesecond weaving wire 300. Thesmaller weaving wires 200 are finer and softer to make thefirst weaving mesh 20 capably of providing excellent attachment to theinterior surface 10 of thetubular member 1 and better capillary force to the working fluid filled in thetubular member 2, while thelarger weaving wires 300 are coarser and harder to make thesecond weaving mesh 30 capably of providing better support effect of the wick structure. Therefore, during the high-temperature annealing process, thesecond weaving mesh 30 of thesecond wick layer 3 can provide sufficient support to thefirst weaving mesh 20 so that thefirst wick structure 2 is not easily softened and peeled from theinterior surface 10 of thetubular member 1. Meanwhile, thesecond wick layer 3 can also provide more capillary force to transport the working fluid. - As the
first wick layer 2 has thefiner weaving wires 200 compared to thecoarser weaving wires 300 of thesecond wick layer 3, the capillary force of the heat pipe is enhanced, whilesecond wick layer 3 provides better support to thefirst wick layer 2 to ensure thefirst wick structure 2 can still attach on theinterior surface 10 of thetubular member 1 without peeling at annealing. - While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those of ordinary skill in the art the various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (3)
1. A multi-layer wick structure attached to a tubular member of a heat pipe, comprising:
a first wick layer having a plurality of first weaving meshes attached to an interior surface of the tubular member; and
a second wick layer having at least a second weaving mesh, which is encircled by the first wick layer so that the first wick layer is sandwiched between the tubular member and the second wick layer, wherein the first weaving mesh comprises a plurality of first weaving wires and the second weaving mesh comprises a plurality of second weaving wires, and the first weaving wire has the diameter smaller than that of the second weaving wire.
2. (canceled)
3. The structure of claim 1 , wherein the second wick layer has a plurality of weaving meshes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/082,803 US20060207749A1 (en) | 2005-03-18 | 2005-03-18 | Multi-layer wick structure of heat pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/082,803 US20060207749A1 (en) | 2005-03-18 | 2005-03-18 | Multi-layer wick structure of heat pipe |
Publications (1)
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US20060207749A1 true US20060207749A1 (en) | 2006-09-21 |
Family
ID=37009095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/082,803 Abandoned US20060207749A1 (en) | 2005-03-18 | 2005-03-18 | Multi-layer wick structure of heat pipe |
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US (1) | US20060207749A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060198753A1 (en) * | 2005-03-04 | 2006-09-07 | Chu-Wan Hong | Method of manufacturing wick structure for heat pipe |
US20060283574A1 (en) * | 2005-06-15 | 2006-12-21 | Top Way Thermal Management Co., Ltd. | Thermoduct |
US20080105405A1 (en) * | 2006-11-03 | 2008-05-08 | Hul-Chun Hsu | Heat Pipe Multilayer Capillary Wick Support Structure |
US20100155032A1 (en) * | 2008-12-22 | 2010-06-24 | Furui Precise Component (Kunshan) Co., Ltd. | Heat pipe and method of making the same |
US20100319881A1 (en) * | 2009-06-19 | 2010-12-23 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat spreader with vapor chamber and method for manufacturing the same |
US20120148967A1 (en) * | 2010-12-13 | 2012-06-14 | Thomas Thomas J | Candle wick including slotted wick members |
CN106871675A (en) * | 2017-03-22 | 2017-06-20 | 广东工业大学 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe and preparation method thereof |
WO2021216532A1 (en) * | 2020-04-20 | 2021-10-28 | Westinghouse Electric Company Llc | Internal hydroforming method for manufacturing heat pipe wicks |
Citations (17)
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US3327866A (en) * | 1964-06-15 | 1967-06-27 | Pall Corp | Woven wire mesh |
US3576210A (en) * | 1969-12-15 | 1971-04-27 | Donald S Trent | Heat pipe |
US3681843A (en) * | 1970-03-06 | 1972-08-08 | Westinghouse Electric Corp | Heat pipe wick fabrication |
US3720988A (en) * | 1971-09-20 | 1973-03-20 | Mc Donnell Douglas Corp | Method of making a heat pipe |
US3754594A (en) * | 1972-01-24 | 1973-08-28 | Sanders Associates Inc | Unilateral heat transfer apparatus |
US3779310A (en) * | 1971-04-05 | 1973-12-18 | G Russell | High efficiency heat transit system |
US3857441A (en) * | 1970-03-06 | 1974-12-31 | Westinghouse Electric Corp | Heat pipe wick restrainer |
US3964902A (en) * | 1974-02-27 | 1976-06-22 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Method of forming a wick for a heat pipe |
US4108239A (en) * | 1975-04-10 | 1978-08-22 | Siemens Aktiengesellschaft | Heat pipe |
US4186796A (en) * | 1977-05-17 | 1980-02-05 | Usui International Industry, Ltd. | Heat pipe element |
US5076352A (en) * | 1991-02-08 | 1991-12-31 | Thermacore, Inc. | High permeability heat pipe wick structure |
US20010004934A1 (en) * | 1999-12-24 | 2001-06-28 | Masaaki Yamamoto | Compressed mesh wick, method for manufacturing same, and plate type heat pipe including compressed mesh wick |
US6460612B1 (en) * | 2002-02-12 | 2002-10-08 | Motorola, Inc. | Heat transfer device with a self adjusting wick and method of manufacturing same |
US6619384B2 (en) * | 2001-03-09 | 2003-09-16 | Electronics And Telecommunications Research Institute | Heat pipe having woven-wire wick and straight-wire wick |
US20050247435A1 (en) * | 2004-04-21 | 2005-11-10 | Hul-Chun Hsu | Wick structure of heat pipe |
US20050266163A1 (en) * | 2002-11-12 | 2005-12-01 | Wortman David J | Extremely strain tolerant thermal protection coating and related method and apparatus thereof |
US20060035189A1 (en) * | 2002-07-23 | 2006-02-16 | Rational Ag | Pore burner and cooking appliance containing at least one pore burner |
-
2005
- 2005-03-18 US US11/082,803 patent/US20060207749A1/en not_active Abandoned
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3327866A (en) * | 1964-06-15 | 1967-06-27 | Pall Corp | Woven wire mesh |
US3576210A (en) * | 1969-12-15 | 1971-04-27 | Donald S Trent | Heat pipe |
US3681843A (en) * | 1970-03-06 | 1972-08-08 | Westinghouse Electric Corp | Heat pipe wick fabrication |
US3857441A (en) * | 1970-03-06 | 1974-12-31 | Westinghouse Electric Corp | Heat pipe wick restrainer |
US3779310A (en) * | 1971-04-05 | 1973-12-18 | G Russell | High efficiency heat transit system |
US3720988A (en) * | 1971-09-20 | 1973-03-20 | Mc Donnell Douglas Corp | Method of making a heat pipe |
US3754594A (en) * | 1972-01-24 | 1973-08-28 | Sanders Associates Inc | Unilateral heat transfer apparatus |
US3964902A (en) * | 1974-02-27 | 1976-06-22 | The United States Of America As Represented By The United States National Aeronautics And Space Administration | Method of forming a wick for a heat pipe |
US4108239A (en) * | 1975-04-10 | 1978-08-22 | Siemens Aktiengesellschaft | Heat pipe |
US4186796A (en) * | 1977-05-17 | 1980-02-05 | Usui International Industry, Ltd. | Heat pipe element |
US5076352A (en) * | 1991-02-08 | 1991-12-31 | Thermacore, Inc. | High permeability heat pipe wick structure |
US20010004934A1 (en) * | 1999-12-24 | 2001-06-28 | Masaaki Yamamoto | Compressed mesh wick, method for manufacturing same, and plate type heat pipe including compressed mesh wick |
US6619384B2 (en) * | 2001-03-09 | 2003-09-16 | Electronics And Telecommunications Research Institute | Heat pipe having woven-wire wick and straight-wire wick |
US6460612B1 (en) * | 2002-02-12 | 2002-10-08 | Motorola, Inc. | Heat transfer device with a self adjusting wick and method of manufacturing same |
US20060035189A1 (en) * | 2002-07-23 | 2006-02-16 | Rational Ag | Pore burner and cooking appliance containing at least one pore burner |
US20050266163A1 (en) * | 2002-11-12 | 2005-12-01 | Wortman David J | Extremely strain tolerant thermal protection coating and related method and apparatus thereof |
US20050247435A1 (en) * | 2004-04-21 | 2005-11-10 | Hul-Chun Hsu | Wick structure of heat pipe |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060198753A1 (en) * | 2005-03-04 | 2006-09-07 | Chu-Wan Hong | Method of manufacturing wick structure for heat pipe |
US20060283574A1 (en) * | 2005-06-15 | 2006-12-21 | Top Way Thermal Management Co., Ltd. | Thermoduct |
US7293601B2 (en) * | 2005-06-15 | 2007-11-13 | Top Way Thermal Management Co., Ltd. | Thermoduct |
US20080105405A1 (en) * | 2006-11-03 | 2008-05-08 | Hul-Chun Hsu | Heat Pipe Multilayer Capillary Wick Support Structure |
US20100155032A1 (en) * | 2008-12-22 | 2010-06-24 | Furui Precise Component (Kunshan) Co., Ltd. | Heat pipe and method of making the same |
US8622117B2 (en) * | 2008-12-22 | 2014-01-07 | Furui Precise Component (Kunshan) Co., Ltd. | Heat pipe including a main wick structure and at least one auxiliary wick structure |
US20100319881A1 (en) * | 2009-06-19 | 2010-12-23 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat spreader with vapor chamber and method for manufacturing the same |
US20120148967A1 (en) * | 2010-12-13 | 2012-06-14 | Thomas Thomas J | Candle wick including slotted wick members |
CN106871675A (en) * | 2017-03-22 | 2017-06-20 | 广东工业大学 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe and preparation method thereof |
WO2021216532A1 (en) * | 2020-04-20 | 2021-10-28 | Westinghouse Electric Company Llc | Internal hydroforming method for manufacturing heat pipe wicks |
US11780122B2 (en) | 2020-04-20 | 2023-10-10 | Westinghouse Electric Company Llc | Internal hydroforming method for manufacturing heat pipe wicks |
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Owner name: JAFFE LIMITED, VIRGIN ISLANDS, BRITISH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHU, HUL-CHUN;REEL/FRAME:016396/0697 Effective date: 20050315 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |