EP1285213A1 - Microstructured heat exchanger and method for producing the same - Google Patents
Microstructured heat exchanger and method for producing the sameInfo
- Publication number
- EP1285213A1 EP1285213A1 EP01935996A EP01935996A EP1285213A1 EP 1285213 A1 EP1285213 A1 EP 1285213A1 EP 01935996 A EP01935996 A EP 01935996A EP 01935996 A EP01935996 A EP 01935996A EP 1285213 A1 EP1285213 A1 EP 1285213A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- hollow fiber
- fiber structure
- graphite
- matrix body
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
- F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels
Definitions
- the invention relates to a microstructure heat exchanger and a method for producing such a microstructure heat exchanger according to the type of the independent claims.
- a first approach to the realization of microstructure heat exchangers with a defined fluid flow through the capillary interiors of metallic hollow fiber structures has been proposed in the application DE 199 10 985.0.
- the object of the present invention is to produce a microstructure heat exchanger which, on the one hand, enables good thermal coupling to the component to be cooled and, on the other hand, is inexpensive to produce, and the provision of a simple manufacturing process suitable for this purpose.
- microstructure heat exchanger according to the invention and the method according to the invention have the advantage over the prior art that it is thus possible in a simple manner to connect a large number of small tubes or hollow fibers in parallel within a hollow fiber structure, and therefore on account of the large heat exchanger surface that arises to transfer or dissipate a high heat output. It is also advantageous that the use of graphite as the matrix body provides a particularly good thermal coupling or thermal conductivity of the microstructure heat exchanger according to the invention.
- the hollow fiber structure used can be produced in a large number of variants or structures, and can therefore be easily adapted to the task in each individual case.
- the manufacturing method according to the invention stands out
- the hollow fiber structure used is in particular a regular arrangement of metallic tubes which are gas-permeable or liquid-permeable and are connected to a common supply line and a common discharge line.
- a graphite body made of graphite foils pressed together, preferably previously made of expanded graphite, into which the, in particular, metallic hollow fiber structure was embedded during the pressing, is particularly advantageously suitable as the matrix body.
- Both unstructured, d. H. flat graphite foils are used, as well as graphite foils which have been provided with a negative structuring corresponding to the arrangement of the tubes of the hollow fiber structure before the pressing.
- the component is made flat in the form of a plate and is connected to the cooling component in a heat-conducting manner by pressing on it.
- This pressing is particularly simple due to the elasticity or plastic formability of the graphite body used, and any unevenness in the cooling component is also compensated, which additionally leads to an improved thermal coupling.
- a thermal conductive paste for example in the form of a conductive layer applied to the flat graphite body, can also be used to improve the thermal coupling or to improve the heat conduction between the graphite body and the component to be cooled.
- FIG. 1 shows a metallic hollow fiber structure
- FIG. 2a shows the pressing of this hollow fiber structure with two graphite foils
- FIG. 2b shows the matrix body with an integrated hollow fiber structure obtained after the pressing according to FIG. 2a
- FIG. 3 shows a microstructure heat exchanger in the form of a plate with an applied cooling plate.
- the invention starts out from a metallic hollow fiber structure 10 as described in a similar form in the application DE 199 10 985.0. In this respect, details on the manufacturing process should be avoided.
- FIG. 1 first shows a hollow fiber structure 10 which has been produced in accordance with the application DE 199 10 985.0.
- This has a multiplicity of metallic tubes 13 arranged parallel to one another, which are connected to a common supply line 12 and a common discharge line 11 in a gas-permeable or liquid-permeable manner.
- the tubes 13 and the feed line 12 and the discharge line 11 are made of nickel, for example.
- the wall thickness of the tubes 13 of the hollow fiber structure 10 according to FIG. 1 is between 100 nm and 50 ⁇ m, in particular 500 nm to 5 ⁇ m.
- the average distance between the tubes 13 of the hollow fiber structure 10 according to FIG. 1 is usually between 5 ⁇ m and 10 mm, in particular between 20 ⁇ m and 200 ⁇ m.
- two graphite foils 14 made of previously expanded graphite are first prepared, between which the hollow fiber structure 10 is arranged. This is explained with the aid of FIG. 2a.
- Expanded graphite is understood to mean flake-like graphite which has a typical bulk density of approximately 2 g / 1 to 200 g / 1 and which was formed, for example, from graphite flakes so-called graphite salt soaked in acid, which, for example, at high temperatures 1200 ° C have been expanded like a shock.
- the hollow fiber structure 10 is further preferably placed between the graphite foils 14 in such a way that the tubes 13 lie between the foils 14, while the discharge line 11 and the feed line 12 are not covered by the graphite foils 14.
- the hollow fiber structure 10 is first arranged between two lightly pressed graphite foils 14 made of expanded graphite, and then these two graphite foils 14 are pressed together with the hollow fiber structure 10. With this pressing, no additional binder is required due to the elasticity and the plastic formability of the graphite foils 14.
- the elasticity of the graphite foils 14 used ensures a particularly good thermal coupling of the tubes 13 to the graphite foils 14, so that a very effective supply of heat or heat dissipation results from the matrix body 15 formed after the graphite foils 14 have been pressed with the hollow fiber structure 10.
- the matrix body 15 formed in the form of a plate after the pressing is shown in FIG. 2b.
- At least one of these two graphite foils can likewise be provided with a negative structuring corresponding to the arrangement of the tubes 13 of the hollow fiber structure 10 before the pressing.
- the negative structuring of at least one of the graphite foils 14 can take place, for example, by appropriate embossing with a printing structure or stamp corresponding to the hollow fiber structure 10.
- microstructure heat exchanger 5 is not limited to a fluid or gas flow according to FIG. 1.
- FIG. 3 explains how cooling of a cooling component in the form of a cooling plate 17 takes place with the matrix body 15 produced.
- the cooling plate 17 is pressed with a suitable contact pressure with the matrix body 15, the cooling plate 17 being thermally coupled to the matrix body 15.
- the good thermal coupling results from the elasticity and thermal conductivity of the graphite used.
- an electronic power component such as a transistor or an integrated circuit can also be provided, the electrical connections of which are then preferably located on the surface facing away from the matrix body 15. 3 can further improve the thermal coupling between the matrix body 15 and Cooling plate 17 can also be provided that a layer of a thermal conductive paste 16 is applied to the matrix body 15.
- the use of such conductive pastes is not desirable, since on the one hand they have a lower thermal conductivity than graphite and on the other hand they are often viscous, so that they tend to flow in long-term stability tests.
- a large number of concepts are suitable for supplying heat or for removing heat from the microstructure heat exchanger 5.
- cooling can be carried out using fluids or gases such as air, water or a refrigerant.
- the fluid is guided through the microstructure heat exchanger 5, for example, by a pump connected to the feed line 12, or the gas, for example, by a blower connected to the feed line 12.
- microstructure heat exchanger 5 d. H. to carry out evaporation of a liquid within the hollow fiber structure 10 embedded in the matrix body 15, so that, for example, cooling takes place in the microstructure heat exchanger 5 according to the principle of the heat pipe.
- the use of a pump is unnecessary, since the coolant can be circulated purely by gravity or, for example, by capillary forces in a wick-like structure which is integrated, for example, into the feed line 12.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10022972 | 2000-05-11 | ||
DE10022972A DE10022972A1 (en) | 2000-05-11 | 2000-05-11 | Micro heat exchanger has a number of parallel metal hollow fiber tubes shrouded by a graphite matrix body for a high heat exchange in a simple unit |
PCT/DE2001/001571 WO2001086221A1 (en) | 2000-05-11 | 2001-04-26 | Microstructured heat exchanger and method for producing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1285213A1 true EP1285213A1 (en) | 2003-02-26 |
EP1285213B1 EP1285213B1 (en) | 2005-04-06 |
Family
ID=7641583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01935996A Expired - Lifetime EP1285213B1 (en) | 2000-05-11 | 2001-04-26 | Microstructured heat exchanger and method for producing the same |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1285213B1 (en) |
JP (1) | JP2003533057A (en) |
KR (1) | KR100758836B1 (en) |
DE (2) | DE10022972A1 (en) |
ES (1) | ES2240457T3 (en) |
WO (1) | WO2001086221A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10220705A1 (en) * | 2002-05-10 | 2003-11-27 | Abb Patent Gmbh | Device for chemical or biochemical analysis of samples or reagents using water as a solvent |
US20040118553A1 (en) * | 2002-12-23 | 2004-06-24 | Graftech, Inc. | Flexible graphite thermal management devices |
JP2006064296A (en) * | 2004-08-27 | 2006-03-09 | Sgl Carbon Ag | Heat conductive plate formed of expanded graphite and production method therefor |
DE102005029051A1 (en) * | 2005-06-21 | 2006-12-28 | Sgl Carbon Ag | Heat conductive device for heating floor, wall or ceiling of building has heat conductive layer, which is arranged in between the pipe and the part of the plate surface facing towards the pipe |
EP1736715A1 (en) * | 2005-06-23 | 2006-12-27 | Sgl Carbon Ag | Vacuum tube for solar collectors with improved heat transfer |
EP2597041A1 (en) * | 2011-11-22 | 2013-05-29 | Active Space Technologies GmbH | Thermal strap |
EP2667102B1 (en) | 2012-05-23 | 2014-12-24 | Inotec Gmbh & Co.KG | Composite construction element for a floor, wall or ceiling air conditioning device of a building |
JP6201458B2 (en) * | 2013-06-28 | 2017-09-27 | 富士通株式会社 | Electronic device and method of manufacturing electronic device |
WO2020167563A2 (en) * | 2019-02-05 | 2020-08-20 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Vascular composite heat exchanger |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE966473C (en) * | 1951-07-22 | 1957-09-12 | Huels Chemische Werke Ag | Graphite heat exchanger |
FR2373498A1 (en) * | 1976-12-09 | 1978-07-07 | Savoie Electrodes Refract | Refractory block based on carbon - contg. hollow metal coolers embedded in the carbon, to circulate cooling fluid |
JPS6453438A (en) * | 1987-08-25 | 1989-03-01 | Actronics Kk | Cooler for power semiconductor element |
US5079619A (en) | 1990-07-13 | 1992-01-07 | Sun Microsystems, Inc. | Apparatus for cooling compact arrays of electronic circuitry |
GB9211413D0 (en) * | 1992-05-29 | 1992-07-15 | Cesaroni Anthony Joseph | Panel heat exchanger formed from tubes and sheets |
US5829516A (en) * | 1993-12-15 | 1998-11-03 | Aavid Thermal Products, Inc. | Liquid cooled heat sink for cooling electronic components |
JP3521318B2 (en) * | 1994-08-05 | 2004-04-19 | 株式会社日立製作所 | High heat flux heat receiving plate and method of manufacturing the same |
US5785754A (en) * | 1994-11-30 | 1998-07-28 | Sumitomo Electric Industries, Ltd. | Substrate, semiconductor device, element-mounted device and preparation of substrate |
JP3025441B2 (en) * | 1996-08-08 | 2000-03-27 | 日本原子力研究所 | Method for manufacturing first cooling wall of fusion reactor |
JP2000082659A (en) * | 1998-09-03 | 2000-03-21 | Miura Co Ltd | Developing liquid application system and its control method |
DE19910985B4 (en) * | 1999-03-12 | 2004-09-02 | Robert Bosch Gmbh | Process for the production of metallic hollow fibers or hollow fiber structures |
-
2000
- 2000-05-11 DE DE10022972A patent/DE10022972A1/en not_active Ceased
-
2001
- 2001-04-26 EP EP01935996A patent/EP1285213B1/en not_active Expired - Lifetime
- 2001-04-26 JP JP2001583120A patent/JP2003533057A/en active Pending
- 2001-04-26 KR KR1020027000304A patent/KR100758836B1/en not_active IP Right Cessation
- 2001-04-26 DE DE50105837T patent/DE50105837D1/en not_active Expired - Lifetime
- 2001-04-26 WO PCT/DE2001/001571 patent/WO2001086221A1/en active IP Right Grant
- 2001-04-26 ES ES01935996T patent/ES2240457T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0186221A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003533057A (en) | 2003-11-05 |
EP1285213B1 (en) | 2005-04-06 |
DE10022972A1 (en) | 2001-11-22 |
DE50105837D1 (en) | 2005-05-12 |
KR100758836B1 (en) | 2007-09-19 |
ES2240457T3 (en) | 2005-10-16 |
WO2001086221A1 (en) | 2001-11-15 |
KR20020037331A (en) | 2002-05-18 |
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