WO2001003484A1 - Method of installing heat source, and micro heat pipe module - Google Patents
Method of installing heat source, and micro heat pipe module Download PDFInfo
- Publication number
- WO2001003484A1 WO2001003484A1 PCT/FI2000/000596 FI0000596W WO0103484A1 WO 2001003484 A1 WO2001003484 A1 WO 2001003484A1 FI 0000596 W FI0000596 W FI 0000596W WO 0103484 A1 WO0103484 A1 WO 0103484A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- pipe module
- micro
- heat pipe
- heat source
- Prior art date
Links
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
- F28D15/0233—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 the conduits having a particular shape, e.g. non-circular cross-section, annular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
- H01L23/427—Cooling by change of state, e.g. use of heat pipes
-
- 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
- F28D2015/0225—Microheat pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the invention relates to a method of installing a heat source generating thermal energy on a micro heat pipe module which comprises micro heat pipes for dissipating thermal energy generated by the heat source, in which method the heat source generating thermal energy is installed on one side of the micro heat pipe module.
- the invention also relates to a micro heat pipe module which comprises micro heat pipes for dissipating thermal energy generated by a heat source and which micro heat pipe module has a side on which the heat source generating thermal energy is installed.
- Cooling electronic components is an old problem which has become more and more pronounced with increasing integration intensities and power.
- New methods, such as heat pipes, have lately emerged along with conventional convection cooling.
- a standard heat pipe is typically a copper cylinder several millimetres in diameter and about nine inches in length, emptied of air and partly filled with a working fluid.
- a heat pipe conducts thermal energy generated by a heat source, such as an electronic component, from one end of the heat pipe to another as latent heat from the change of phase of a working fluid in the heat pipe.
- the thermal heat generated by the heat source makes the working fluid boil and vaporise in the hot end of the heat pipe, i.e. the vaporiser of the heat pipe. Due to a generated pressure difference, the vapour moves to the other, cold end of the heat pipe, i.e. the condenser of the heat pipe, where the vapour surrenders it latent heat and returns as fluid back to the vaporiser driven by capillary forces.
- a heat pipe is an extremely efficient heat conductor, its effective thermal conductivity is typically 10 to 100 times better than that of copper.
- micro heat pipe modules which comprise very small micro heat pipes placed side by side and a binding agent. These have been used to even out temperature distribution, especially when the heat source is a local one and surrounded by an area considerably cooler in temperature.
- the micro heat pipe modules are usually attached between the heat source, such as an electronic component generating thermal energy, and another surface, such as a circuit board, cooling plates or the body of an apparatus. Micro heat pipe modules have been disclosed in US patent 5,527,588, for instance.
- a micro heat pipe module has a limited heat conducting ability.
- the micro heat pipes cannot function due to a partial drying up, for instance.
- the internal pressure of a micro heat pipe beneath a heat source such as an electronic component, increases too much and fluid cannot for some reason return to the vaporisation area driven by capillary forces.
- the object of the invention is achieved by a method characterized in that the side of the micro heat pipe module, on which a heat source generating thermal energy is installed, is coated at least partly with a coating made of a heat conducting material, which coating is arranged to conduct the heat generated by the heat-generating heat source away from the heat- generating heat source along said side of the micro heat pipe module and into the micro heat pipe module.
- An arrangement of the invention is in a corresponding manner characterized in that the side of the micro heat pipe module, on which the heat-generating heat source is installed, is at least partly coated with a coating made of a heat conducting material, which coating is arranged to conduct the heat generated by the heat-generating heat source away from the heat- generating heat source along said side of the micro heat pipe module and into the micro heat pipe module.
- Preferred embodiments of the arrangement of the invention are set forth in the dependent claims 5 to 9.
- the solution of the invention increases the maximum power transmission capacity of a micro heat pipe module by reducing the local heat load at the heat source.
- the solution is based on the use of a coating, i.e. more exactly a thermal pre-levelling material.
- thermal energy generated by the heat source diffuses along the pre-levelling layer in lateral direction, the local heat load on the top surface of the micro heat pipe module at the heat source decreases and the micro heat pipe module can function longer at a higher component power before a local operational limit is reached.
- the coating can also act as a galvanic insulation layer, and it can be machined, if necessary.
- the figure shows a micro heat pipe module 1 which comprises micro heat pipes 3 for dissipating thermal energy generated by a heat source 2, such as an electronic component.
- a heat source 2 such as an electronic component.
- the operation of such a micro heat pipe 3 is known per se and is, therefore, not described herein in more detail.
- the micro heat pipe module 1 has a side 4 on which the heat source 2 generating thermal energy is installed.
- the figure shows a micro heat pipe module 1 in the shape of a rectangular prism, having six sides, of which at least one is intended for the heat source 2 generating thermal energy.
- the side 4 of the micro heat pipe module 1 on which the heat source 2 generating thermal energy is installed, is at least partly coated with a coating 5.
- the coating 5 is made of a heat conducting material.
- the coating 5 is arranged to conduct the heat generated by the heat source 2 generating thermal energy away from the heat source 2 generating thermal energy along said side 4 of the micro heat pipe module 1 and to the micro heat pipe module 1.
- the coating 5 is thus arranged to distribute thermal energy from the heat source 2 to a wider area and consequently, the local heat load peak at the heat source 2 and in its immediate vicinity becomes smaller. Due to the distribution of the heat load from the heat source 2 generating thermal energy by means of the coating 5 to a wider area and on therefrom to the micro heat pipe module 1 , the micro heat pipe module 1 is able to function longer at a higher component power before reaching a local operational limit.
- the side 4 of the micro heat pipe module 1 on which the heat source 2 generating thermal energy is installed, is preferably substantially completely coated with the coating 5.
- the heat source 2 generating thermal energy is preferably installed on the coating 5 as shown in the figure.
- the heat conducting material of the coating 5 preferably comprises metal, preferably copper metal. Copper and copper metals are known for their good heat conductivity. A electrically conductive plane can be formed with a copper metal or another metal on the surface of the micro heat pipe module 1 , and the heat source 2 can be directly grounded to it. It is also easy to solder the heat source 2 to a copper metal, which provides an excellent heat conductivity and ground conductivity.
- the coating 5 can preferably comprise graphite or diamond-like carbon.
- the coating 5 can also act as a galvanic insulation layer which insujates various electronic components from each other and/or from the micro heat pipe module 1 so that electrical current cannot flow from one electronic component to another.
- the invention also relates to a method of installing a heat source 2 generating thermal energy on a micro heat pipe module 1 which comprises micro heat pipes 3 for dissipating the thermal energy generated by the heat source 2. In the method, a heat source 2 generating thermal energy is installed on one side 4 of a micro heat pipe module 1.
- said side 4 of the micro heat pipe module 1 on which the heat source 2 generating thermal energy is installed, is at least partly coated with a coating 5 made of a heat conducting material.
- the coating 5 is arranged to conduct the heat generated by the heat-generating heat source 2 away from the heat-generating heat source 2 along said side 4 of the micro heat pipe module 1 and to the micro heat pipe module 1.
- Said side 4 is preferably coated substantially completely.
- the heat source 2 generating thermal energy is preferably installed on the coating 5.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU58309/00A AU5830900A (en) | 1999-07-01 | 2000-06-29 | Method of installing heat source, and micro heat pipe module |
EP00944073A EP1201109A1 (en) | 1999-07-01 | 2000-06-29 | Method of installing heat source, and micro heat pipe module |
US10/026,943 US20020121359A1 (en) | 1999-07-01 | 2001-12-27 | Method of installing heat source, and micro heat pipe module |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI991509A FI991509A (en) | 1999-07-01 | 1999-07-01 | Method for Installing a Heat Energy Generating Heat Source on a Micro Pipe Module and a Micro Heat Pipe Module |
FI991509 | 1999-07-01 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/026,943 Continuation US20020121359A1 (en) | 1999-07-01 | 2001-12-27 | Method of installing heat source, and micro heat pipe module |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001003484A1 true WO2001003484A1 (en) | 2001-01-11 |
Family
ID=8555006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2000/000596 WO2001003484A1 (en) | 1999-07-01 | 2000-06-29 | Method of installing heat source, and micro heat pipe module |
Country Status (5)
Country | Link |
---|---|
US (1) | US20020121359A1 (en) |
EP (1) | EP1201109A1 (en) |
AU (1) | AU5830900A (en) |
FI (1) | FI991509A (en) |
WO (1) | WO2001003484A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002080270A1 (en) * | 2001-03-30 | 2002-10-10 | Thermotek, Inc. | Cooling apparatus having low profile extrusion |
US6834712B2 (en) | 2001-11-27 | 2004-12-28 | Thermotek, Inc. | Stacked low profile cooling system and method for making same |
US6935409B1 (en) | 1998-06-08 | 2005-08-30 | Thermotek, Inc. | Cooling apparatus having low profile extrusion |
EP2327947A1 (en) * | 2009-11-30 | 2011-06-01 | ABB Research Ltd | Heat exchanger |
US9113577B2 (en) | 2001-11-27 | 2015-08-18 | Thermotek, Inc. | Method and system for automotive battery cooling |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070130769A1 (en) * | 2002-09-03 | 2007-06-14 | Moon Seok H | Micro heat pipe with pligonal cross-section manufactured via extrusion or drawing |
US20040112572A1 (en) * | 2002-12-17 | 2004-06-17 | Moon Seok Hwan | Micro heat pipe with poligonal cross-section manufactured via extrusion or drawing |
DE102007053090B4 (en) * | 2007-11-07 | 2011-12-15 | Rohde & Schwarz Gmbh & Co. Kg | Heat sink and cooling arrangement for electrical components and method for producing a heat sink and a cooling arrangement for electrical components |
US9464847B2 (en) | 2011-02-04 | 2016-10-11 | Lockheed Martin Corporation | Shell-and-tube heat exchangers with foam heat transfer units |
US9951997B2 (en) | 2011-02-04 | 2018-04-24 | Lockheed Martin Corporation | Staged graphite foam heat exchangers |
WO2012106601A2 (en) | 2011-02-04 | 2012-08-09 | Lockheed Martin Corporation | Radial-flow heat exchanger with foam heat exchange fins |
US20130146250A1 (en) * | 2011-12-08 | 2013-06-13 | Lockheed Martin Corporation | System and method for desalination of water using a graphite foam material |
US11057983B2 (en) | 2019-01-30 | 2021-07-06 | Rohde & Schwarz Gmbh & Co. Kg | PCB assembly and method of manufacturing a PCB assembly |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5355942A (en) * | 1991-08-26 | 1994-10-18 | Sun Microsystems, Inc. | Cooling multi-chip modules using embedded heat pipes |
JPH06291481A (en) * | 1993-04-02 | 1994-10-18 | Furukawa Electric Co Ltd:The | High-density heat radiation type circuit board |
US5598632A (en) * | 1994-10-06 | 1997-02-04 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method for producing micro heat panels |
US5727619A (en) * | 1994-08-10 | 1998-03-17 | Mitsubishi Denki Kabushiki Kaisha | Honeycomb sandwich panel with built in heat pipes |
DE19849919A1 (en) * | 1997-11-07 | 1999-05-12 | Duewag Ag | Active semiconductor module |
-
1999
- 1999-07-01 FI FI991509A patent/FI991509A/en unknown
-
2000
- 2000-06-29 EP EP00944073A patent/EP1201109A1/en not_active Withdrawn
- 2000-06-29 WO PCT/FI2000/000596 patent/WO2001003484A1/en not_active Application Discontinuation
- 2000-06-29 AU AU58309/00A patent/AU5830900A/en not_active Abandoned
-
2001
- 2001-12-27 US US10/026,943 patent/US20020121359A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5355942A (en) * | 1991-08-26 | 1994-10-18 | Sun Microsystems, Inc. | Cooling multi-chip modules using embedded heat pipes |
JPH06291481A (en) * | 1993-04-02 | 1994-10-18 | Furukawa Electric Co Ltd:The | High-density heat radiation type circuit board |
US5727619A (en) * | 1994-08-10 | 1998-03-17 | Mitsubishi Denki Kabushiki Kaisha | Honeycomb sandwich panel with built in heat pipes |
US5598632A (en) * | 1994-10-06 | 1997-02-04 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Method for producing micro heat panels |
DE19849919A1 (en) * | 1997-11-07 | 1999-05-12 | Duewag Ag | Active semiconductor module |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6935409B1 (en) | 1998-06-08 | 2005-08-30 | Thermotek, Inc. | Cooling apparatus having low profile extrusion |
US6988315B2 (en) | 1998-06-08 | 2006-01-24 | Thermotek, Inc. | Cooling apparatus having low profile extrusion and method of manufacture therefor |
WO2002080270A1 (en) * | 2001-03-30 | 2002-10-10 | Thermotek, Inc. | Cooling apparatus having low profile extrusion |
US6834712B2 (en) | 2001-11-27 | 2004-12-28 | Thermotek, Inc. | Stacked low profile cooling system and method for making same |
US9113577B2 (en) | 2001-11-27 | 2015-08-18 | Thermotek, Inc. | Method and system for automotive battery cooling |
US9877409B2 (en) | 2001-11-27 | 2018-01-23 | Thermotek, Inc. | Method for automotive battery cooling |
EP2327947A1 (en) * | 2009-11-30 | 2011-06-01 | ABB Research Ltd | Heat exchanger |
EP2327947B1 (en) * | 2009-11-30 | 2012-02-22 | ABB Research Ltd | Heat exchanger |
US8915293B2 (en) | 2009-11-30 | 2014-12-23 | Abb Research Ltd | Heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
US20020121359A1 (en) | 2002-09-05 |
AU5830900A (en) | 2001-01-22 |
FI991509A (en) | 2001-01-02 |
EP1201109A1 (en) | 2002-05-02 |
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