WO2005096377A1 - A heat exchanger - Google Patents
A heat exchanger Download PDFInfo
- Publication number
- WO2005096377A1 WO2005096377A1 PCT/AU2005/000475 AU2005000475W WO2005096377A1 WO 2005096377 A1 WO2005096377 A1 WO 2005096377A1 AU 2005000475 W AU2005000475 W AU 2005000475W WO 2005096377 A1 WO2005096377 A1 WO 2005096377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- base
- exchanger according
- fins
- cover
- Prior art date
Links
Classifications
-
- 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
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
-
- 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
- a HEAT EXCHANGER TECHNICAL FIELD This invention relates to heat exchangers and more particularly to a heat exchanger suitable for use with computer central processing units and/or thermo-electric modules.
- BACKGROUND ART A prior art multi-channelled heat exchanger described in Australian patent specification No. 779,519.
- the invention will be described in relation to the use of a heat exchanger with a computer central processing unit. The performance of a computer central processing unit can be improved by removing heat and thus there is a need for a heat exchanger adapted for use with a computer central processing unit.
- a heat exchanger comprising:- (i) a conductive base, (ii) an array of heat exchanger fins on the base defining a plurality of channels through which coolant liquid may flow, (iii) a sealing sheet or pad overlying the surface of the fins remote from the base, and (iv) a non-conductive cover sealingly engaged with the base and enclosing the heat exchange channels, the cover having an inlet leading to the channels and at least one outlet leading from the heat exchange channels.
- a heat exchanger comprising:- (i) a conductive base, (ii) an array of heat exchanger fins on the base defining a plurality of channels through which coolant liquid may flow, and (iii) a conductive cover sealingly engaged with the base and enclosing the heat exchange channels, the cover having an inlet leading to the channels and at least one outlet leading from the heat exchange channels.
- the conductive cover has a central inlet which directs the coldest liquid directly to the metal fins adjacent to the source of heat from a CPU die. A central inlet, will most likely be preferred if only a heat exchanger is applied to the CPU.
- Fig. 1 is a partially cut away perspective view of a heat exchanger according to one embodiment of the invention
- Fig. 2 is an exploded view of the heat exchanger shown in Fig. 1
- Fig. 3 is a plan view of the heat exchanger shown in Fig. 1
- Fig. 4 is a cross-sectional view of the heat exchanger taken along lines A-A of Fig. 3
- Fig. 5 is an enlarged view of portion C of Fig. 4
- Fig. 6 is a cross-sectional view of the heat exchanger taken along lines D-D of Fig.
- Fig. 7 is an enlarged view of portion F of Fig. 6
- Fig. 8 is a perspective view of a heat exchanger according to another embodiment of the invention
- Fig. 9 is a plan view of the cover shown in Fig. 8
- Fig. 10 is a cross-sectional view of the cover shown in Fig. 8 taken along lines A-A of Fig. 9
- Fig. 11 is a cross-sectional view of the cover shown in Fig. 8 taken along lines B-B
- Fig. 12 is a graph of thermal resistance (°C/W) and pressure drop (kPa) against flow rate (L/min) for a heat exchanger according to one embodiment of the invention. MODES FOR CARRYING OUT THE INVENTION The heat exchanger 10 shown in Figs.
- 1 to 7 consists of a copper base or tray 11 which seats in a plastic bottom flange 12 and supports an array of copper fins 13 which define heat exchanger channels.
- a rubber sealing member in the form of a sheet or pad 14 overlies the fins 13 and a plastic cover 15 is sealingly engaged with the base flange 12 with O-ring 16 therebetween.
- the fins 13 are made from a continuous sheet of copper, folded in a concertina fashion. The top and bottom surfaces of the channels are sealed by virtue of the compression of the fins against each other.
- the fins 13 are soldered to the copper base and sealed with the rubber pad 14 at the top to prevent liquid bypass between the top of the fins and the plastic cover.
- the heat exchanger channels defined by the array of fins 13 extend from an inlet side 20 to an outlet side 21 of the heat exchanger 10.
- the cover 15 has an inlet 22 leading to the inlet side 20 and an outlet 23 leading from the outlet side 21.
- the cover or manifold top 15 has a peripheral flange 24 which terminates in an inwardly directed flange 25 to define therebetween a channel 26 in which the O-ring 16 is seated.
- the flange 24 has a stepped recess 27 on its inner face 28 which receives a similarly shaped lip 29 of the bottom flange 12.
- the heat exchanger 10 is placed directly onto the computer central processing unit and then clamped in place.
- thermo electric module 40 which is placed into contact with the computer central processing unit or other heat source or cold sink.
- the thermo electric module actively removes heat from the computer central processing unit and transfers it to water flowing through the heat exchanger mounted on the hot side of the thermo electric module.
- water is piped to a remote radiator which dissipates the heat to atmosphere.
- the heat exchanger of the embodiment shown in Figs. 8 to 11 has a cover or manifold top 30 made of copper and has a central inlet 31 and two outlets 32 and 33 on either side of the inlet 31.
- the copper cover 30 allows a soldered joint to be used in place of the O-ring 16 of the embodiment of Fig. 1.
- the base 34 is soldered to the cover 30 and obviates the need for the flange 12 of the Fig. 1 embodiment and rubber pad 14 and o-ring 16.
- the copper fins 13 have a V-shaped cut 35 across them to assist the entry of fluid. This jet impingement feature directs the coldest liquid directly to the metal fins adjacent to the source of heat from the CPU die thereby enhancing cooling performance.
- the thermo-electric heat exchangers shown in the drawings have a remarkably low thermal resistance at very modest pumping power.
- thermo-electric module A thermal resistance of only 0.01 °C/W with a pumping power requirement of 2.2 watts for 2 litres per minute flow rate on a 40mm x 40mm face area has been achieved. Optimized microchannels have enabled these low thermal resistances to be achieved and the benefit can be demonstrated by considering the effect on a high heat pumping thermo-electric module. If the module is cooling at 100W capacity with a coefficient of performance (COP) of 1.0 then the heat passing through the cold side is 100W and the heat passing through the hot side is 200W. Heat exchangers on the cold side and hot side pose thermal resistance to heat flow, i.e. there is a temperature difference required to force the heat across the interface.
- COP coefficient of performance
- thermo-electric modules have a thermal resistance of 0.1°C/W compared to 0.01 °C/W heat exchanger of the invention.
- the table below shows the effect on the dT a thermo-electric module can achieve with a heat exchanger of the invention compared to typical heat exchangers, assuming a 100W coldside.
- thermo-electric modules have a maximum dT of 75°C so a 30°C loss across the heat exchanger interfaces leaves only 45°C of effective temperature differential. Compare this to the 3°C temperature differential with heat exchangers of the invention where the module is left with 72°C of effective temperature differential.
- the base is made from pure silver and the cover is made from polycarbonate.
- the cooling performance of one specific embodiment of the invention is as follows:-
- Fig. 12 is a graph of the thermal resistance (°C/W) and pressure drop (kPa) against flow rate (L/min) for a heat exchanger according to the invention.
- Various modifications may be made in details and design and construction of the heat exchanger without departing from the scope and ambit of the invention.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007505339A JP2007531991A (en) | 2004-03-31 | 2005-03-31 | Heat exchanger |
AU2005228057A AU2005228057B2 (en) | 2004-03-31 | 2005-03-31 | A heat exchanger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2004901733 | 2004-03-31 | ||
AU2004901733A AU2004901733A0 (en) | 2004-03-31 | A heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005096377A1 true WO2005096377A1 (en) | 2005-10-13 |
Family
ID=35064077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2005/000475 WO2005096377A1 (en) | 2004-03-31 | 2005-03-31 | A heat exchanger |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2007531991A (en) |
WO (1) | WO2005096377A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013008385A (en) * | 2006-09-28 | 2013-01-10 | Fisher Rosemount Systems Inc | Prevention of abnormal state of heat exchanger |
US20140251582A1 (en) * | 2007-08-09 | 2014-09-11 | Coolit Systems Inc. | Fluid heat exchanger configured to provide a split flow |
US9909820B2 (en) | 2007-08-09 | 2018-03-06 | Coolit Systems, Inc. | Fluid heat exchange systems |
US9943014B2 (en) | 2013-03-15 | 2018-04-10 | Coolit Systems, Inc. | Manifolded heat exchangers and related systems |
US10364809B2 (en) | 2013-03-15 | 2019-07-30 | Coolit Systems, Inc. | Sensors, multiplexed communication techniques, and related systems |
US10365667B2 (en) | 2011-08-11 | 2019-07-30 | Coolit Systems, Inc. | Flow-path controllers and related systems |
US10415597B2 (en) | 2014-10-27 | 2019-09-17 | Coolit Systems, Inc. | Fluid heat exchange systems |
US11395443B2 (en) | 2020-05-11 | 2022-07-19 | Coolit Systems, Inc. | Liquid pumping units, and related systems and methods |
US11452243B2 (en) | 2017-10-12 | 2022-09-20 | Coolit Systems, Inc. | Cooling system, controllers and methods |
US11473860B2 (en) | 2019-04-25 | 2022-10-18 | Coolit Systems, Inc. | Cooling module with leak detector and related systems |
US11662037B2 (en) | 2019-01-18 | 2023-05-30 | Coolit Systems, Inc. | Fluid flow control valve for fluid flow systems, and methods |
US11725886B2 (en) | 2021-05-20 | 2023-08-15 | Coolit Systems, Inc. | Modular fluid heat exchange systems |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7331378B2 (en) * | 2006-01-17 | 2008-02-19 | Delphi Technologies, Inc. | Microchannel heat sink |
US9496200B2 (en) | 2011-07-27 | 2016-11-15 | Coolit Systems, Inc. | Modular heat-transfer systems |
DE202012002974U1 (en) * | 2011-07-27 | 2012-07-23 | Coolit Systems Inc. | Fluid heat exchange systems |
JP5957686B2 (en) * | 2012-01-13 | 2016-07-27 | パナソニックIpマネジメント株式会社 | COOLING DEVICE AND ELECTRONIC DEVICE AND ELECTRIC CAR HAVING THE SAME |
JP6482955B2 (en) * | 2015-06-02 | 2019-03-13 | 昭和電工株式会社 | Liquid cooling system |
JP6646005B2 (en) * | 2017-03-24 | 2020-02-14 | 株式会社ケーヒン | Power module |
JP6646004B2 (en) * | 2017-03-24 | 2020-02-14 | 株式会社ケーヒン | Power module |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4573067A (en) * | 1981-03-02 | 1986-02-25 | The Board Of Trustees Of The Leland Stanford Junior University | Method and means for improved heat removal in compact semiconductor integrated circuits |
EP0243710A2 (en) * | 1986-04-30 | 1987-11-04 | International Business Machines Corporation | Flexible finned heat exchanger |
US5584183A (en) * | 1994-02-18 | 1996-12-17 | Solid State Cooling Systems | Thermoelectric heat exchanger |
EP1204143A2 (en) * | 2000-11-03 | 2002-05-08 | Cray Inc. | Semiconductor circular and radial flow cooler |
-
2005
- 2005-03-31 JP JP2007505339A patent/JP2007531991A/en active Pending
- 2005-03-31 WO PCT/AU2005/000475 patent/WO2005096377A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4573067A (en) * | 1981-03-02 | 1986-02-25 | The Board Of Trustees Of The Leland Stanford Junior University | Method and means for improved heat removal in compact semiconductor integrated circuits |
EP0243710A2 (en) * | 1986-04-30 | 1987-11-04 | International Business Machines Corporation | Flexible finned heat exchanger |
US5584183A (en) * | 1994-02-18 | 1996-12-17 | Solid State Cooling Systems | Thermoelectric heat exchanger |
EP1204143A2 (en) * | 2000-11-03 | 2002-05-08 | Cray Inc. | Semiconductor circular and radial flow cooler |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8762106B2 (en) | 2006-09-28 | 2014-06-24 | Fisher-Rosemount Systems, Inc. | Abnormal situation prevention in a heat exchanger |
JP2013008385A (en) * | 2006-09-28 | 2013-01-10 | Fisher Rosemount Systems Inc | Prevention of abnormal state of heat exchanger |
US10274266B2 (en) | 2007-08-09 | 2019-04-30 | CoolIT Systems, Inc | Fluid heat exchange sytems |
US20140251582A1 (en) * | 2007-08-09 | 2014-09-11 | Coolit Systems Inc. | Fluid heat exchanger configured to provide a split flow |
US9603284B2 (en) * | 2007-08-09 | 2017-03-21 | Coolit Systems, Inc. | Fluid heat exchanger configured to provide a split flow |
US9909820B2 (en) | 2007-08-09 | 2018-03-06 | Coolit Systems, Inc. | Fluid heat exchange systems |
US10365667B2 (en) | 2011-08-11 | 2019-07-30 | Coolit Systems, Inc. | Flow-path controllers and related systems |
US11714432B2 (en) | 2011-08-11 | 2023-08-01 | Coolit Systems, Inc. | Flow-path controllers and related systems |
US10364809B2 (en) | 2013-03-15 | 2019-07-30 | Coolit Systems, Inc. | Sensors, multiplexed communication techniques, and related systems |
US9943014B2 (en) | 2013-03-15 | 2018-04-10 | Coolit Systems, Inc. | Manifolded heat exchangers and related systems |
US11661936B2 (en) | 2013-03-15 | 2023-05-30 | Coolit Systems, Inc. | Sensors, multiplexed communication techniques, and related systems |
US10415597B2 (en) | 2014-10-27 | 2019-09-17 | Coolit Systems, Inc. | Fluid heat exchange systems |
US11452243B2 (en) | 2017-10-12 | 2022-09-20 | Coolit Systems, Inc. | Cooling system, controllers and methods |
US11662037B2 (en) | 2019-01-18 | 2023-05-30 | Coolit Systems, Inc. | Fluid flow control valve for fluid flow systems, and methods |
US11473860B2 (en) | 2019-04-25 | 2022-10-18 | Coolit Systems, Inc. | Cooling module with leak detector and related systems |
US11725890B2 (en) | 2019-04-25 | 2023-08-15 | Coolit Systems, Inc. | Cooling module with leak detector and related systems |
US11395443B2 (en) | 2020-05-11 | 2022-07-19 | Coolit Systems, Inc. | Liquid pumping units, and related systems and methods |
US11725886B2 (en) | 2021-05-20 | 2023-08-15 | Coolit Systems, Inc. | Modular fluid heat exchange systems |
Also Published As
Publication number | Publication date |
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JP2007531991A (en) | 2007-11-08 |
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