WO1997025741A1 - Kühlkörper mit zapfen - Google Patents
Kühlkörper mit zapfen Download PDFInfo
- Publication number
- WO1997025741A1 WO1997025741A1 PCT/EP1997/000002 EP9700002W WO9725741A1 WO 1997025741 A1 WO1997025741 A1 WO 1997025741A1 EP 9700002 W EP9700002 W EP 9700002W WO 9725741 A1 WO9725741 A1 WO 9725741A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- kuhlkoφer
- pins
- cooling
- pin
- kühlkoφer
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 57
- 239000002826 coolant Substances 0.000 claims abstract description 39
- 239000012212 insulator Substances 0.000 claims abstract description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims 1
- 239000012777 electrically insulating material Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000565 sealant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920002449 FKM Polymers 0.000 description 1
- 229920013648 Perbunan Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- HAPOVYFOVVWLRS-UHFFFAOYSA-N ethosuximide Chemical compound CCC1(C)CC(=O)NC1=O HAPOVYFOVVWLRS-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
-
- 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
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
-
- 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
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
-
- 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
-
- 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 cooling element according to the preamble of claim 1
- the problem with such an arrangement is that the heat dissipation of any components on the outer surfaces of the cooler body is inhomogeneous.
- the flow path is short-circuited between the coolant inlet and coolant outlet. Hot zones therefore form on the outer surfaces.
- the heat resistance of the arrangement in DE 40 17 749 also has a high level Heat resistance of approx. 30 K / kW, which leads to overheating of the coolant
- the object of the invention is therefore to provide a cooling element with a pin arrangement which improves the flow conditions in the cooling element
- the local density of the pegs is chosen so that in the interior of the cooling element there is an essentially homogeneous flow resistance. Em short-circuiting of the flow path of the cooling medium is prevented, and the cooling medium flows evenly around the pegs
- the pegs attached to at least one inner surface have a tapering shape, the respective contact surface of a peg with an inner surface of the cooling body having the largest cross section of the peg. The thermal resistance of the arrangement is thus reduced
- the pins (5. 5 1 ) are arranged along the flow path with an opening angle of 40 ° to 60 °
- the Kuhlko ⁇ er invention is characterized by the flow-favorable design of the cones and by a high degree of fullness with cones in the Kuhlko ⁇ e ⁇ nnern
- the pins at least cohesively attached to the inner surface have a tapering shape, the respective contact surface of a pin with the inner surface of the cooling body having the largest cross-sectional area of the pin. The thermal resistance of the arrangement is thus reduced
- Fig 1 b eme top view of the inside of a cooler body with unevenly distributed cones
- FIG. 2 eme top view of the inside of another embodiment emer
- FIG. 3a shows a side view of a cooling body with consecutive pegs in longitudinal section
- FIG. 3b shows a view of another embodiment of a cooling body with consecutive pegs in longitudinal section.
- 4 shows the structure of a multi-part cooling body
- FIG. 5 shows a clamp for connecting the parts of a multi-part cooling body
- FIG. 1 a shows the side view of a cooling body 1 according to the invention with an upper and a lower part 2 and 2 '.
- the connections for coolant inlet 3 and coolant outlet 4 are indicated.
- the connections 3 and 4 can be arranged on opposite sides or on the same side.
- the two parts 2 and 2 'smd connected to each other and can eg be glued, sintered, screwed or clamped or connected to one another via an intermediate piece.
- the cooling body is, for example, suitable for liquid cooling media, but can also be used for gaseous cooling media
- a top view of the inner surface of the cooler body 2 of the cooler body 1 is shown, the wall being shown schematically by a circle.
- a large number of pins 5 are arranged on the inner surface of the cooler body part 2.
- the pins 5 are separated by channels 6 and are uneven Distributed over the inner surface of the Kuhlko ⁇ erteil 2
- the degree of fullness of the pin 5 in the area of the imaginary shortest connecting line 7 between the coolant inlet 3 and coolant outlet 4 is high, removed ge ⁇ ng, so that the flow resistance over the O
- the area with the higher cone density is at least as wide as the smaller the diameter of the cooling water inlet and outlet 3 and 4
- the resultant Narrow channel width is advantageous for the flow rate of the cooling medium.
- the arrangement has a narrow thermal resistance of only 20 K / kW
- the degree of fullness varies from 1 1 (cavity to volume fraction of material) to 2 1.
- the advantage then lies in the fact that for such a full degree, the manufacture of the tools for producing such a cooling body. e.g. by pressing and sintering ceramics, it is still simple. Any rejects by breaking out pins 5. 5 'or channels 6 are avoided.
- the flow rate is then 10 1 / ⁇ un large enough for the usual coolant flow rates for sufficient heat removal, but still small enough not to damage the Kuhlko ⁇ er 1 abrasively
- the degree of fullness can be achieved by omitting or adding pins 5. 5 ' or by enlarging or reducing pins 5, 5' or channels 6 or changing the pin size or channel size with unchanged channels 6 or pins 5, 5 * . that the maximum flow rate of the coolant along the channels 6 in each channel is not more than 50%, especially not more than 30%. is below or above the mean flow rate maximum
- the pins can have any shape per se. However, it turns out that a special base area of the pins 5, 5 'is particularly advantageous
- FIG. 2 shows a top view of the inner surface of a cooling body 2, a particularly favorable embodiment of a cooling body 1.
- a large number of flow-efficient pins 5 are arranged on the inner surface of the cooling body 2.
- the base area of the pins is diamond-shaped, with a long diagonal 8 of the pins 5 in is roughly parallel to the possible flow path of the cooling medium.
- the diamond shape is particularly favorable. since no stagnation point can form at the tip of the pin 5 against which flow flows. Instead, the flow of the cooling medium is divided and can flow around and cool the pin 5
- the flow around the pins 5 with a diamond-shaped base area is particularly advantageous according to the invention when the opening angle of the flowed front tip of each diamond 5 is between 40 ° and 60 °, in particular between 46 ° and 55 °, since the flow velocity around the pin is then at a maximum or Overcurrent length is small At larger angles or z. B with cylindrical cones deteriorates terte formation of stagnation points ⁇ on the upstream side of the cones 5 Um flow around them, at lower angles the mechanical stability of the flow around the cones 5 decreases A foundede overcurrent length is too large for given favorable cones and deteriorates the heat flow from the cone 5
- a further advantageous cone shape is shown in cross section in FIG. 3a.
- the pins 5 run tapered into the interior of the cooling body 1 and contact with their largest cross-sectional area ⁇ e inner surface 2 of the cooling body 1
- the tip of the pins 5 can be pointed or flattened, so that heat dissipation can be further improved, since any hot side of the The cooling body is contacted over a large area and the heat-dissipating pins 5, 5 'have a large area contact with the cooling element.
- expensive basic material can be saved in the manufacture of the cooling body 1
- the structure of the two cooling parts 2, 2 'of the cooling part is symmetrical to the play plane 9 between the two cooling parts 2 and 2 ⁇ ⁇ e pins 5, 5' face each other directly in the fully assembled state of the cooling part 1
- 3b shows a mirror-symmetric arrangement of the pins 5. 5 '.
- Both cooling parts 2. T have pins 5, 5' on their inner sides.
- the arrangement is symmetrical to the mirror plane 9 between the two cooling element halves 2 and 2 ', Zape pins 5. 5' face each other directly in the finished, monolithic state of the cooling element 1
- 3c shows an arrangement which permits a particularly high degree of fullness of the pins.
- the pins 5, 5 'of the upper and lower cooling body parts 2, 2' are arranged offset from one another and intermeshing. This allows the coolant speed to be increased even further since the channels 6 also in the middle area of the cooling body 1. where the two cooling body parts 2 and 2 ' meet, narrow smd
- different cone shapes and base areas can also be selected with this arrangement
- heat dissipation is optimal when the coolant speed is so high. that a turbulent flow is formed.
- the coolant damages the cooler body by erosion
- the minimum heat transfer constant R, h of the cooling element 1 according to the invention should not be less than 3000 W / (m 2 K). With lower values of R «, cooling is insufficient. For water as a possible cooling medium, this results in a minimum flow velocity of 0.1 m / sec with 1 kW power loss
- a minimum flow rate of about 0.1 m / sec is not underestimated.
- the coolant flow rate from which the cooling body 1 is abrasively damaged may be exceeded.
- this limit is, for example, 1 m / sec, for aluminum at 1.5 m / sec
- the flow of the cooling medium e.g. water
- the Kuhlko ⁇ er 1 succeeds with the Kuhlko ⁇ er 1 according to the invention a significant reduction in the heat resistance.
- the heat resistance is clearly below 30 K / kW.
- the value is, for example, 20 K / kW
- FIG. 4 shows a further advantageous embodiment of a cooling body 1 according to the invention.
- a lower part 2 'and an annular middle part 2 "coolant inlet and outlet 3 and 4 can be arranged on the middle part 2" on opposite sides or the same sides of the circumference of the middle part 2 "on the inside of the upper part 2 and the lower part 2 'smd pins 5 and 5 " arranged (only indicated)
- the parts 2 and 2' smd with the middle part 2" aligned and detachably connected by means of sealant 10.
- the lower sealant 10 ' is not shown Flat openings or round lines, e.g. made of Perbunan or Viton.
- the detachable connection can be made using clamps, sleeves or the like.
- FIG. 5 shows such a connecting chamber with which the cooling body parts 2, 2 'and 2 "can be detachably connected to one another.
- Several clamps of this type are arranged on the outer edge of the cooling body 1.
- This type of connection is particularly in the stacked arrangement with a plurality of cooling elements connected in series and power components to be cooled, for example in electric motor power trains, are advantageous.
- the actual holding force, which presses the parts together, is applied via the clamping device of the stack, which is typically around 40 kN when the cooling body stacks are received.
- the clamping of the individual cooling bodies facilitates maintenance and replacement of any defective components or Kuhlko ⁇ er from b the stack considerably
- the middle part 2 is hollow and has connections 3 and 4 for the coolant. It is particularly advantageous if this middle part consists of metal (aluminum or copper or other cost-effective materials) or plastic. While ceramic bodies connect the coolant lines is technically complex This is considerably simplified in the arrangement according to the invention.
- the connections such as commercially available flange connections or sockets, can be attached, for example, by means of screw threads on the central part 2 "or connected to this by soldering
- the cooling element 1 can preferably be made of insulator parts, such as aluminum, silicon carbide. Alumina. Berylhumoxid, silicon oxide or formed from Scfuchtko ⁇ ern sem. ⁇ e are provided with heat-conducting coatings, for example from the above-mentioned group of insulators or diamond
- the multi-part cooler body 1 according to the invention is preferably composed of insulating, preferably voleramic parts 2 and 2 'and a metallic or insulating middle part 2 "
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/894,988 US6039114A (en) | 1996-01-04 | 1997-01-02 | Cooling body having lugs |
EP97900948A EP0835524A1 (de) | 1996-01-04 | 1997-01-02 | Kühlkörper mit zapfen |
JP09524831A JP3090954B2 (ja) | 1996-01-04 | 1997-01-02 | ピンを備えた冷却部材 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996100166 DE19600166A1 (de) | 1996-01-04 | 1996-01-04 | Kühlkörper mit verbessertem Strömungswiderstand |
DE1996100164 DE19600164A1 (de) | 1996-01-04 | 1996-01-04 | Kühlkörper mit Zapfen |
DE19600164.1 | 1996-01-04 | ||
DE19600166.8 | 1996-01-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997025741A1 true WO1997025741A1 (de) | 1997-07-17 |
Family
ID=26021879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/000002 WO1997025741A1 (de) | 1996-01-04 | 1997-01-02 | Kühlkörper mit zapfen |
Country Status (4)
Country | Link |
---|---|
US (1) | US6039114A (de) |
EP (1) | EP0835524A1 (de) |
JP (1) | JP3090954B2 (de) |
WO (1) | WO1997025741A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1089604A1 (de) * | 1999-08-30 | 2001-04-04 | Electric Boat Corporation | Kühlkörper |
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- 1997-01-02 EP EP97900948A patent/EP0835524A1/de not_active Withdrawn
- 1997-01-02 US US08/894,988 patent/US6039114A/en not_active Expired - Fee Related
- 1997-01-02 JP JP09524831A patent/JP3090954B2/ja not_active Expired - Fee Related
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EP1089604A1 (de) * | 1999-08-30 | 2001-04-04 | Electric Boat Corporation | Kühlkörper |
US6230791B1 (en) | 1999-08-30 | 2001-05-15 | Electric Boat Corporation | Heat transfer cold plate arrangement |
Also Published As
Publication number | Publication date |
---|---|
US6039114A (en) | 2000-03-21 |
EP0835524A1 (de) | 1998-04-15 |
JP3090954B2 (ja) | 2000-09-25 |
JPH11506873A (ja) | 1999-06-15 |
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