WO2009093618A1 - Corrugated-fin type radiator - Google Patents
Corrugated-fin type radiator Download PDFInfo
- Publication number
- WO2009093618A1 WO2009093618A1 PCT/JP2009/050893 JP2009050893W WO2009093618A1 WO 2009093618 A1 WO2009093618 A1 WO 2009093618A1 JP 2009050893 W JP2009050893 W JP 2009050893W WO 2009093618 A1 WO2009093618 A1 WO 2009093618A1
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- WIPO (PCT)
- Prior art keywords
- fin
- corrugated
- width
- fixing
- corrugated fin
- Prior art date
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- 239000000758 substrate Substances 0.000 claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract 3
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000009751 slip forming Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
- H05K7/20418—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing the radiating structures being additional and fastened onto the housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4871—Bases, plates or heatsinks
- H01L21/4882—Assembly of heatsink parts
-
- 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
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
- H01L23/3672—Foil-like cooling fins or 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
Definitions
- the present invention relates to a corrugated fin-type radiator including a corrugated fin, in particular, among radiators used for cooling semiconductor elements that generate heat when used, such as transistors, LSIs, and microprocessors.
- FIG. 4A is a diagram showing a state in which the fin fixing portion of the corrugated fin is fixed to the fixing groove in the conventional corrugated fin-type radiator
- FIG. 4B is a view of the vicinity of the fixing groove to which the fin fixing portion is fixed. It is a partially expanded sectional view.
- the conventional corrugated fin type radiator 100 mainly includes a corrugated fin 110 and a support substrate 120 in which a plurality of fin fixing grooves 123 are formed.
- the fixing groove 123 is formed by a flat bottom portion 125, a tapered portion 124 that spreads from the opening side, and a corner portion 127 that is rounded between the tapered portion 124 and the bottom portion 125.
- the corrugated fin fixing portion 114 of the corrugated fin 110 has a protruding portion 111 with its lower end protruding to the fin fixing groove 123 side, and the width is equal to or smaller than the minimum opening width on the opening side of the fin fixing groove 123. It is formed to become.
- the corrugated fin-type radiator 100 as described above still has room for improvement.
- it is required to further improve the heat dissipation efficiency.
- it is an important issue to further increase the adhesion area and adhesion force between the corrugated fins and the support substrate.
- the corrugated fin fixing portion 114 cannot be expanded well to the corner 127 of the fin fixing groove 123.
- the gap S may be formed without being able to adhere well along the corner 127.
- the protruding portion 111 of the corrugated fin fixing portion 114 is pressed by the press-fitting blade 132 having a flat lower end, the protruding portion 111 is crushed in the width direction of the fin fixing groove 123. When it spreads and reaches the corner 127, it is pushed up in the height direction of the fin fixing groove 123 and deformed. As a result of this deformation, the corrugated fin fixing portion 114 is pulled in the width direction, and its substantially central portion rises and deforms, thereby forming a gap S between the protruding portion 111 and the bottom portion 125 of the fin fixing groove 123. There was a case where it was done.
- a corrugated fin-type radiator that can increase the adhesion area and the adhesion force between the corrugated fin and the support substrate and thereby improve the heat radiation efficiency is desired.
- the present invention includes a corrugated fin for radiating heat, and a support substrate on which a plurality of fixing grooves formed by a side wall and a bottom are formed in order to fix a part of the corrugated fin.
- It is a corrugated fin-type heat radiator, and the bottom portion has a flange portion formed in parallel with the bottom portion and having a height higher than the bottom portion, and the side wall portion is supported by the support portion.
- a falling portion that vertically falls from the substrate, a tapered portion that expands from the falling portion toward the bottom portion, and a corner portion that has a round shape that is continuously formed from the tapered portion to the bottom portion.
- the corrugated fin is formed, and a part of the corrugated fin is fixed in a shape along a side wall and a bottom of the fixing groove.
- the collar portion is provided at least at the bottom, a portion of the corrugated fin is first pressed by the collar and spreads along the shape of the collar. Furthermore, it spreads along the shape of the bottom part and is pushed toward the side wall parts on both sides of the fixing groove.
- adherence area of a corrugated fin and a support substrate can be increased.
- the amount of deformation of the corrugated fin can be increased correspondingly, and thereby, a force to push a part of the corrugated fin toward the corner portion and the side wall portion on both sides of the fixing groove is increased. Can be strong.
- a part of corrugated fin can be made to closely adhere to a fixed groove.
- the side wall portion of the fixed groove has a falling portion and a tapered portion, a part of the corrugated fin is fitted and fixed to the fixed groove, so that a lateral force in which adjacent corrugated fins pull each other is pulled.
- a part of the corrugated fin can be satisfactorily adhered to the side wall portion.
- the contact area between the corrugated fin and the support substrate can be increased.
- the side wall portion has a corner portion having a rounded shape, a part of the corrugated fin that is expanded toward the corner portion presses the corner portion, thereby fixing the corrugated fin to the support substrate. Can be improved.
- the length of the falling portion is set to be not less than 1/6 and not more than 1/2 of the length of the side wall portion.
- the height of the flange portion is set to 1/10 or more and 2/3 or less of the height of the fixed groove, and the width of the lower end portion of the flange portion is set to 10 minutes of the width of the fixed groove.
- the width of the upper end portion of the flange portion is set to 1/8 or more and 5/5 or less of the width of the lower end portion of the flange portion, and the width dimension of the upper end portion Is formed so as to have a relationship equal to or smaller than the width of the lower end portion.
- a part of the corrugated fin can be more suitably fixed in a shape along the side wall, bottom and corner of the fixing groove without applying an excessive load to the corrugated fin.
- the radius of the corner portion is set to 1/16 or more and 1/3 or less of the width of the fixed groove.
- a part of the corrugated fin can be more closely attached to the corner portion.
- the manufacturing method of the corrugated fin-type heat radiator of the present invention is a method of manufacturing the corrugated fin-type heat radiator according to claim 1, and includes a substrate manufacturing stage, a fin forming stage, a fixing stage, , Comprising.
- the side wall portion having the tapered portion and the corner portion by extruding or cutting the support substrate in a substrate manufacturing stage, Forming a plurality of the fixing grooves formed on the bottom portion, forming the flange portion on the bottom portion, and bending the metal thin plate by a fin forming step to constitute a lower end of the corrugated fin.
- the corrugated fins are manufactured by forming a plurality of corrugated fins so as to have substantially the same width or slightly smaller widths, and the coupling is formed continuously from the fin bottom and the longitudinal ends of the fin bottom by a fixing step.
- a fin fixing part consisting of a lower end part of the part is inserted into the fixing groove from the opening side and fitted to the upper part of the flange part. Then, the corrugated fin is fixed to the support substrate by pressing the fin bottom portion toward the flange and deforming the fin fixing portion along the shape of the fixing groove.
- the following effects can be obtained. That is, according to the corrugated fin-type radiator of the present invention, the contact area between the corrugated fin and the support substrate can be increased, and the heat conduction from the support substrate to the corrugated fin can be improved. For this reason, the thermal radiation efficiency of a corrugated fin type heat radiator can be improved. In addition, the fixing strength of the corrugated fin to the support substrate can be improved. Moreover, according to the manufacturing method of the corrugated fin-type radiator of the present invention, the fin fixing portion is deformed along the shape of the fixing groove, and the corrugated fin is fixed to the supporting substrate. Since the contact area and the contact force can be increased, the heat dissipation characteristics of the corrugated fin-type radiator can be improved.
- the fixing strength of the corrugated fin to the support substrate can be improved. Further, since the corrugated fin can be fitted and fixed to the support substrate without using a wedge material or the like, the number of parts of the radiator can be reduced, and the radiator can be manufactured at low cost. .
- FIG. 2 is a partially enlarged sectional view in the vicinity of a fixing groove in FIG. 1.
- or (c) is a figure for demonstrating a mode that a corrugated fin is fixed to a fixing groove.
- (A) is a figure which shows a mode that the fin fixing
- (b) is a part of the fixing groove vicinity to which the fin fixing
- the corrugated fin-type heat radiator 1 is formed by a corrugated fin 10 for radiating heat and a side wall portion 24 and a bottom portion 25 for fixing a part of the corrugated fin 10. And a support substrate 20 on which a plurality of fixing grooves 23 are formed.
- the corrugated fin 10 and the support substrate 20 are formed of a material having excellent thermal conductivity, such as copper, a copper alloy, and an aluminum alloy.
- the corrugated fin 10 includes a fin bottom portion 11 that is substantially parallel to the support substrate 20 that constitutes the lower end of the corrugated fin, and a fin top portion 12 that is substantially parallel to the support substrate 20 and constitutes the upper end of the corrugated fin 10.
- a connecting portion 13 that connects the fin bottom portion 11 and the fin top portion 12 and is substantially perpendicular to the support substrate 20 is configured.
- a plurality of fin bottom portions 11 and fin top portions 12 are alternately formed.
- Such a corrugated fin 10 can be formed by bending a long metal thin plate by press working or the like.
- the connecting portion 13 is not formed on the outermost side of the corrugated fin 10, and the outermost fin bottom portion 15 (see FIG. 2) It is formed shorter than the other fin bottom part 11.
- the height of the connecting portion 13 of the corrugated fin 10 from the support substrate 20 is not particularly limited as long as the height is sufficient to obtain a heat dissipation effect.
- the width W1 of the corrugated fin 10 may be equal to or smaller than the width of the support substrate 20, and is not particularly limited. Further, the thickness of the corrugated fin 10 can be appropriately set in consideration of strength and the like.
- the fin bottom portion 11 and the vicinity of the lower ends of the connecting portions 13 and 13 formed continuously from both longitudinal end portions of the fin bottom portion 11 are the fixing grooves 23. It is fitted and fixed along the shape of the fixing groove 23.
- this portion is also referred to as a “fin fixing portion”.
- the width of the fin fixing portion 14 that is, the dimension between the outer wall portions of the connecting portion 13 is substantially the same as or slightly the same as the width on the opening side of the fixing groove 23, that is, the dimension between the side wall portions 24 and 24. It is formed to have a small width. Thereby, the fin fixing portion 14 can be smoothly inserted into the fixing groove 23.
- the support substrate 20 is a base of the corrugated fin-type radiator 1, and has a predetermined width for fixing the corrugated fin 10 to the upper surface portion 21.
- a plurality of fixing grooves 23 having a depth are provided.
- the support substrate 20 is in contact with a heat source (not shown) such as a semiconductor element at the lower surface portion 22, and transfers heat from the heat source (not shown) to the corrugated fin 10.
- a plurality of fixing grooves 23 are formed in a recessed manner from the upper surface portion 21 toward the lower surface portion 22 side of the support substrate 20, and have a side wall portion 24 and a bottom portion 25. Is done.
- the side wall portion 24 is formed continuously from the falling portion 24a that falls substantially perpendicular to the upper surface portion 21 of the support substrate 20 and the falling portion 24a, that is, from the lower end portion of the falling portion 24a, and the bottom portion 25.
- the taper portion 24b has a diameter that increases toward the center, and the taper portion 24b, that is, a corner portion 24c having a round shape that is continuously formed from the lower end portion of the taper portion 24b.
- the length L1 of the falling part 24a is not less than 1/6 and not more than 1/2 of the length L2 of the side wall part 24. If the length L1 of the falling part 24a is equal to or less than one-sixth of the length L2 of the side wall part 24, the length L1 of the falling part 24a is too short. Since there is a possibility that it cannot be made, it is not preferable.
- the length L1 of the falling part 24a is equal to or more than half of the length L2 of the side wall part 24, the angle formed by the falling part 24a and the tapered part 24b, and the taper part 24b and the corner part 24c Since the angle formed becomes too steep, there is a possibility that the fin fixing part 14 cannot be satisfactorily adhered, which is not preferable. It is more preferable that the length L1 of the falling portion 24a is not less than one quarter and not more than one third of the length L2 of the side wall portion 24.
- the radius of the corner portion 24c is not less than 1/16 and not more than 1/3 of the width W2 of the fixed groove 23. If the radius of the corner portion 24c is equal to or less than 1/16 of the width W2 of the fixing groove 23, the angle of the corner portion 24c becomes too steep, and the fin fixing portion 14 is favorably aligned with the shape of the corner portion 24c. Since there is a possibility that it cannot be adhered, it is not preferable. On the other hand, if the radius of the corner portion 24c is equal to or more than one third of the width W2 of the fixing groove 23, the angle of the corner portion 24c becomes too gentle, and the fixing strength may be insufficient. . It is more preferable that the corner portion 24c has a radius of 1/8 to 1/4 of the width W2 of the fixed groove 23.
- the bottom portion 25 is formed in a flat plate shape substantially parallel to the upper surface portion 21 of the support substrate 20, and has a flange portion 26 formed at least partially in parallel with the bottom portion 25 and having a height higher than that of the bottom portion 25. Configured.
- the collar part 26 is formed in the approximate center part of the bottom part 25 in this embodiment.
- the flange portion 26 has a height H2 from the fixing groove 23 that is not less than 1/10 and not more than two-thirds of the height H1 of the fixing groove 23, and the width W3 of the lower end portion is 10 times the width W2 of the fixing groove 23. 1/8 to 5/6, the width W4 of the upper end is 1/8 to 4/5 of the width W3 of the lower end of the flange 26, and the width of the upper end of the flange 26 It is formed so that the dimension of W4 is less than or equal to the dimension of the width W3 of the lower end portion of the flange portion 26.
- the height H2 of the flange portion 26 from the fixing groove 23 is set to 1 ⁇ 4 to 1 ⁇ 2 of the height H1 of the fixing groove 23, and the width W3 of the lower end portion of the flange portion 26 is set to the width of the fixing groove 23. More preferably, the width W4 of the upper end portion of the flange portion 26 is set to be not less than one third and not more than one half of the width W3 of the lower end portion of the flange portion 26. .
- Such a support substrate 20 is formed by, for example, extruding or cutting a plurality of fixing grooves 23 in one plate surface portion (upper surface portion 21 in the present embodiment) of a metal plate.
- engaging portions for engaging the connecting portions 13 formed continuously with the outermost fin bottom portion 15 with the outermost fin bottom portion 15 positioned on the outermost side of the corrugated fin 10. 28 is formed.
- the engaging portion 28 has an engaging side wall portion 28a that falls vertically from the upper surface portion 21, and an engaging bottom portion 28b that is parallel to the support substrate 20 formed continuously from the engaging side wall portion 28a. Configured.
- the width of the engaging portion 28 is formed to be substantially the same width as the dimension from the outer end portion of the outermost fin bottom portion 15 to the outer wall portion of the connecting portion 13.
- a caulking portion 29 is further formed outside the engaging portion 28.
- the caulking portion 29 is used to fix the outermost fin bottom portion 15 to the engaging portion 28 by being crushed.
- the caulking portion 29 is attached to the outer end portion of the engaging bottom portion 28b of the engaging portion 28. It is formed in the shape of a protrusion that rises along.
- the height H3 of the caulking portion 29 is set so that when the caulking portion 29 is crushed, the height of the engaging side wall portion 28a, that is, the height of the fixing groove 23 is set so that the vicinity of the tip portion is not caught by the engaging side wall portion 28a. It is preferably formed so as to be lower than the height H1.
- the fin fixing portion 14 of the corrugated fin 10 is inserted into the fixing groove 23 from the opening side and fitted to the upper portion of the flange portion 26. Then, as shown in FIG. 3 (b), the fin bottom portion 11 is pressed toward the flange portion 26 of the fixing groove 23 at the front end portion of the press tool 31 having the concave portion 31 a at the front end between the connecting portions 13 and 13. Is done.
- the fin bottom portion 11 adheres along the shape of the flange portion 26, and is spread from the flange portion 26 in the width direction of the bottom portion 25 of the fixing groove 23, and adheres along the shape of the corner portion 24 c. Further, it is pushed upward from the corner portion 24c and closely adheres along the shapes of the tapered portion 24b and the falling portion 24a.
- the side wall portion 24 of the fixing groove 23 has a falling portion 24a and a tapered portion 24b, the lateral direction in which the adjacent corrugated fins 20 are pulled together by the fin fixing portion 14 being fitted and fixed to the fixing groove 23.
- the connecting portions 13 and 13 of the fin fixing portion 14 can be satisfactorily adhered to the side wall portion 24.
- the side wall part 24 has the corner part 24c which has a rounded shape, the fin fixing part 14 can be adhered closely to the corner part 24c. In this way, as shown in FIG. 3C, the fin fixing portion 14 is fixed in close contact along the shape of the fixing groove 23.
- the outermost connecting portion 13 and the outermost fin bottom portion 15 are fitted to the engaging portion 28 (see FIG. 1B), and the crimping portion 29 is engaged with the press tool 32 having a flat tip.
- the caulking portion 29 is crushed along the shape of the tip of the press tool 32, spreads on the outermost fin bottom portion 15, The outer fin bottom portion 15 is pressed toward the engagement bottom portion 28b (see FIG. 1B).
- FIG.3 (c) the outermost fin bottom part 15 and the connection part 13 are fixed to the engaging part 28 (refer FIG.1 (b)).
- the corrugated fin 20 is fixed to the support substrate 10.
- the concave portion 31 a at the tip of the press tool 31 can closely contact the fin bottom 11 along the shape of the flange 26 in consideration of the width and height of the lower end of the flange 26 and the thickness of the fin bottom 11. Width and depth are preferred.
- the corrugated fin 10 and the support substrate 20 are brought into close contact with the fin fixing portion 14 of the corrugated fin 10 along the shape of the fixing groove 23 of the support substrate 20.
- the contact area can be increased, and heat conduction from the support substrate 20 to the corrugated fins 10 can be improved. For this reason, the heat dissipation efficiency of the corrugated fin-type radiator 1 can be improved. Further, the strength of fixing the corrugated fin 10 to the support substrate 20 can be improved.
- corrugated fin-type radiator according to the present embodiment has been described above.
- the corrugated fin-type radiator of the present invention is not limited to the present embodiment, and various modifications can be made without departing from the spirit of the present invention. Of course it is possible.
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Abstract
Description
ここで、放熱器の技術分野では、放熱効率をより向上させることが求められている。そのためには、コルゲートフィンと支持基板との密着面積および密着力をより増加させることが重要な課題となっている。 However, the corrugated fin-
Here, in the technical field of radiators, it is required to further improve the heat dissipation efficiency. For this purpose, it is an important issue to further increase the adhesion area and adhesion force between the corrugated fins and the support substrate.
また、本発明のコルゲートフィン型放熱器の製造方法によれば、フィン固定部を、固定溝の形状に沿って変形させてコルゲートフィンを支持基板に固定することにより、コルゲートフィンと支持基板との密着面積および密着力を増加させることができるので、コルゲートフィン型放熱器の放熱特性を向上させることができる。また、支持基板へのコルゲートフィンの固定強度を向上させることができる。さらに、楔材などを使用することなく、支持基板にコルゲートフィンを嵌合し、固定することができるため、放熱器の部品点数を削減することができ、放熱器を安価に製造することができる。 According to the present invention, the following effects can be obtained. That is, according to the corrugated fin-type radiator of the present invention, the contact area between the corrugated fin and the support substrate can be increased, and the heat conduction from the support substrate to the corrugated fin can be improved. For this reason, the thermal radiation efficiency of a corrugated fin type heat radiator can be improved. In addition, the fixing strength of the corrugated fin to the support substrate can be improved.
Moreover, according to the manufacturing method of the corrugated fin-type radiator of the present invention, the fin fixing portion is deformed along the shape of the fixing groove, and the corrugated fin is fixed to the supporting substrate. Since the contact area and the contact force can be increased, the heat dissipation characteristics of the corrugated fin-type radiator can be improved. In addition, the fixing strength of the corrugated fin to the support substrate can be improved. Further, since the corrugated fin can be fitted and fixed to the support substrate without using a wedge material or the like, the number of parts of the radiator can be reduced, and the radiator can be manufactured at low cost. .
10 コルゲートフィン
11 フィン底部
12 フィン頂部
13 連結部
14 フィン固定部
15 最外フィン底部
20 支持基板
21 上面部
22 下面部
23 固定溝
24 側壁部
24a 立下り部
24b テーパー部
24c コーナー部
25 底部
26 畝部
28 係合部
28a 係合側壁部
28b 係合底部
29 かしめ部
31、32 プレス工具
31a 凹部 DESCRIPTION OF
コルゲートフィン型放熱器1は、図1(a)に示すように、熱を放熱するためのコルゲートフィン10と、コルゲートフィン10の一部を固定するために、側壁部24と底部25とで形成される固定溝23が複数形成された支持基板20と、を備えてなる。ここで、コルゲートフィン10および支持基板20は、銅、銅合金、アルミニウム合金などの熱伝導性に優れた素材により形成される。 Hereinafter, the best mode for carrying out the corrugated fin-
As shown in FIG. 1A, the corrugated fin-
Claims (6)
- 熱を放熱するためのコルゲートフィンと、
前記コルゲートフィンの一部を固定するために、側壁部と底部とで形成される固定溝が複数形成された支持基板と、を備えてなるコルゲートフィン型放熱器であって、
前記底部は、
少なくとも一部に、当該底部と平行して形成された、当該底部よりも高さを高くした畝部を有し、
前記側壁部は、
前記支持基板から垂直方向に立ち下がる立下り部と、この立下り部から前記底部に向かうにつれて拡径するテーパー部と、前記テーパー部から前記底部まで連続して形成されるアールを有するコーナー部と、で形成され、
前記コルゲートフィンの一部が前記固定溝の側壁部と底部に沿った形状で当該固定溝に固定されていることを特徴とするコルゲートフィン型放熱器。 Corrugated fins to dissipate heat,
In order to fix a part of the corrugated fin, a corrugated fin-type radiator comprising a support substrate formed with a plurality of fixing grooves formed by a side wall portion and a bottom portion,
The bottom is
At least in part, having a flange formed in parallel with the bottom, the height of which is higher than the bottom,
The side wall portion is
A falling portion that vertically falls from the support substrate, a tapered portion that increases in diameter from the falling portion toward the bottom portion, and a corner portion having a round shape that is continuously formed from the tapered portion to the bottom portion. Formed by,
A part of the corrugated fin is fixed to the fixed groove in a shape along the side wall and the bottom of the fixed groove. - 前記立下り部の長さを、前記側壁部の長さの6分の1以上2分の1以下としたことを特徴とする請求の範囲第1項に記載のコルゲートフィン型放熱器。 The corrugated fin-type radiator according to claim 1, wherein the length of the falling part is set to be 1/6 or more and 1/2 or less of the length of the side wall part.
- 前記畝部の高さを、前記固定溝の高さの10分の1以上3分の2以下とし、前記畝部の下端部の幅を、前記固定溝の幅の10分の1以上6分の5以下とし、前記畝部の上端部の幅を、前記畝部の下端部の幅の8分の1以上5分の4以下とし、かつ、前記上端部の幅の寸法が前記下端部の幅の寸法以下の関係となるように形成されていることを特徴とする請求の範囲第1項または請求の範囲第2項に記載のコルゲートフィン型放熱器。 The height of the flange is set to 1/10 or more and 2/3 or less of the height of the fixed groove, and the width of the lower end of the flange is set to 1/10 or more and 6 minutes of the width of the fixed groove. 5 or less, and the width of the upper end portion of the flange portion is not less than 1/8 and not more than 4/5 of the width of the lower end portion of the flange portion, and the width dimension of the upper end portion is the width of the lower end portion. The corrugated fin-type radiator according to claim 1 or 2, wherein the corrugated fin-type radiator is formed so as to have a relationship of a width dimension or less.
- 前記コーナー部のアールは、前記固定溝の幅の16分の1以上3分の1以下とすることを特徴とする請求の範囲第1項または請求の範囲第2項に記載のコルゲートフィン型放熱器。 The corrugated fin-type heat radiation according to claim 1 or claim 2, wherein a radius of the corner portion is 1/16 or more and 1/3 or less of a width of the fixed groove. vessel.
- 前記コーナー部のアールは、前記固定溝の幅の16分の1以上3分の1以下とすることを特徴とする請求の範囲第3項に記載のコルゲートフィン型放熱器。 4. The corrugated fin-type radiator according to claim 3, wherein the radius of the corner portion is not less than 1/16 and not more than 1/3 of the width of the fixed groove.
- 請求の範囲第1項に記載のコルゲートフィン型放熱器の製造方法であって、
前記支持基板を押出加工または切削加工することにより、前記テーパー部と、前記コーナー部とを有する前記側壁部と、前記底部と、でなる前記固定溝を複数形成するとともに、前記底部に前記畝部を形成する基板製造段階と、
金属薄板を折曲させて、前記コルゲートフィンの下端を構成する、前記支持基板に対して略平行なフィン底部と、前記コルゲートフィンの上端を構成する、前記支持基板に対して略平行なフィン頂部と、前記フィン底部と前記フィン頂部を連結する、前記支持基板に対して略垂直な連結部とを、前記フィン底部と前記フィン頂部とが交互になるように、かつ、隣接する前記連結部の外壁部間の寸法が、前記固定溝の開口幅の寸法と略同幅か若干小さい幅を有するように複数形成することによりコルゲートフィンを製造するフィン成形段階と、
前記フィン底部と、当該フィン底部の長手方向の両端部から連続して形成される前記連結部の下端部とでなるフィン固定部を、開口側から前記固定溝に挿入して前記畝部の上方まで嵌合し、前記連結部の間に、先端に凹部を有するプレス工具の先端部で、前記フィン底部を前記畝部に向けて押圧して、前記フィン固定部を、前記固定溝の形状に沿って変形させることにより、前記コルゲートフィンを前記支持基板に固定する固定段階と、を備えることを特徴とするコルゲートフィン型放熱器の製造方法。 A method for manufacturing a corrugated fin-type heat radiator according to claim 1,
By extruding or cutting the support substrate, a plurality of the fixing grooves including the tapered portion, the side wall portion having the corner portion, and the bottom portion are formed, and the flange portion is formed on the bottom portion. Forming a substrate, and
A fin bottom portion that is substantially parallel to the support substrate and that forms the lower end of the corrugated fin by bending a thin metal plate; and a fin top portion that is substantially parallel to the support substrate and forms the upper end of the corrugated fin And a connecting part that connects the fin bottom part and the fin top part and is substantially perpendicular to the support substrate, so that the fin bottom part and the fin top part are alternately arranged, and the adjacent connecting parts A fin forming step of manufacturing corrugated fins by forming a plurality of dimensions between the outer wall portions so as to have a width substantially equal to or slightly smaller than the dimension of the opening width of the fixed groove;
A fin fixing portion comprising the fin bottom portion and the lower end portion of the connecting portion formed continuously from both ends in the longitudinal direction of the fin bottom portion is inserted into the fixing groove from the opening side and above the flange portion. The tip of the press tool having a recess at the tip is pressed between the connecting parts, and the fin bottom is pressed toward the flange to make the fin fixing part into the shape of the fixing groove. And a fixing step of fixing the corrugated fins to the support substrate by deforming the corrugated fins.
Priority Applications (2)
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CN200980101429.7A CN101904001B (en) | 2008-01-21 | 2009-01-21 | Corrugated-fin type radiator |
US12/863,913 US20110168374A1 (en) | 2008-01-21 | 2009-01-21 | Corrugated-fin type radiator |
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JP2008-000261U | 2008-01-21 | ||
JP2008000261U JP3140755U (en) | 2008-01-21 | 2008-01-21 | Corrugated fin type radiator |
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PCT/JP2009/050893 WO2009093618A1 (en) | 2008-01-21 | 2009-01-21 | Corrugated-fin type radiator |
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US (1) | US20110168374A1 (en) |
JP (1) | JP3140755U (en) |
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Also Published As
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CN101904001A (en) | 2010-12-01 |
US20110168374A1 (en) | 2011-07-14 |
CN101904001B (en) | 2012-08-08 |
JP3140755U (en) | 2008-04-10 |
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