JP2008170060A - Herringbone type liquid cooled heat sink - Google Patents

Herringbone type liquid cooled heat sink Download PDF

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JP2008170060A
JP2008170060A JP2007003283A JP2007003283A JP2008170060A JP 2008170060 A JP2008170060 A JP 2008170060A JP 2007003283 A JP2007003283 A JP 2007003283A JP 2007003283 A JP2007003283 A JP 2007003283A JP 2008170060 A JP2008170060 A JP 2008170060A
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pair
heat sink
inner fins
type liquid
heating element
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JP5005356B2 (en
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Satoru Sakuma
哲 佐久間
Tsutomu Wada
努 和田
Takashi Ueno
孝史 上野
Ken Yanagawa
謙 柳川
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T Rad Co Ltd
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T Rad Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To promote heat exchange as a whole by improving heat transfer performance between a heating element 7 and each inner fin 4, and improving heat transfer performance of a plate 5 in an opposite side of the heating element 7 with respect to the inner fin 4. <P>SOLUTION: A land part 9 for heat transfer promotion is provided in each inner fin 4, and the heating element 7 is fixed to the plate 5 or a tube 6 outer face in a position conforming to the land part 9. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、複数のヘリボーンタイプのインナーフィンを有するヒートシンクにおいて、その外表面にある一対のプレートまたはチューブの発熱体取付部における熱を、各インナーフィンおよび裏面側のプレート等に迅速に伝熱し得るヒートシンクに関する。   In the heat sink having a plurality of helicone type inner fins, the present invention can quickly transfer the heat at the heating element mounting portion of a pair of plates or tubes on the outer surface to each inner fin and the plate on the back side. Regarding heat sink.

ヘリボーンタイプのヒートシンクとして、下記特許文献１に記載のものが知られている。これは内部に収納される一対のインナーフィンとして、夫々四周に枠部が形成されると共に、長手方向両端部に連通孔を有する。そして、枠内に網目状の突条が形成されている。さらに一対のインナーフィンは、その網目の各孔が整合しないように位置ずれして重ね合わされ、一対のインナーフィンの上側および下側にプレートを配置し、プレートの長手方向両端部に冷却液の出入口を設け、それを各インナーフィンの連通孔に連通されたものである。   As a helibone type heat sink, one described in Patent Document 1 below is known. As a pair of inner fins housed inside, a frame portion is formed on each of the four circumferences, and communication holes are provided at both ends in the longitudinal direction. And the mesh-shaped protrusion is formed in the frame. Further, the pair of inner fins are superposed with their positions shifted so that the holes of the mesh are not aligned, a plate is disposed above and below the pair of inner fins, and a coolant inlet / outlet is provided at both ends of the plate in the longitudinal direction. Are provided and communicated with the communication holes of the respective inner fins.

特表平４−５０５０４６号公報Japanese National Publication No. 4-505046

上記ヒートシンクは、発熱体の受熱面から各インナーフィンへの伝熱および、受熱面のインナーフィンに対する反対側の面への伝熱が充分ではない欠点があった。即ち、インナーフィンは多数の細い網目状のリブを有するが、発熱体に整合する位置のリブの面積が比較的小であるためインナーフィンへの伝熱が悪い欠点があった。
そこで本発明は、係る欠点を取り除き、発熱体から各インナーフィンへの伝熱を迅速に行えるものを提供することを課題とする。 The heat sink has a drawback that heat transfer from the heat receiving surface of the heating element to each inner fin and heat transfer from the heat receiving surface to the surface opposite to the inner fin are not sufficient. That is, the inner fin has a large number of thin mesh-like ribs, but has a drawback that heat transfer to the inner fin is poor because the area of the rib aligned with the heating element is relatively small.
Then, this invention makes it a subject to remove the said fault and to provide what can perform the heat transfer from a heat generating body to each inner fin rapidly.

請求項１に記載の本発明は、幅方向の両縁に一対の平行で平坦な細長い縁部(1) が設けられ、両縁部(1) の間にその縁部に対して斜めに多数の細長い傾斜条部(2) が設けられ、各傾斜条部(2) 間にそれぞれスリット(3) が開口され、各傾斜条部(2) と前記縁部(1) とが面一に形成された少なくとも一対のインナーフィン(4) を有し、
一対の前記インナーフィン(4) はその傾斜条部(2) が互いに交差するように重ね合わされて、それらのインナーフィン(4) が一対のプレート(5) 間またはチューブ(6) 内に配置され、前記一対のプレート(5) 間または前記チューブ(6) 内に冷却液が流通し、それらの外面に発熱体(7) が接触固定されるヘリボーンタイプ液冷ヒートシンクにおいて、
前記発熱体(7) が前記プレート(5) またはチューブ(6) 外面に固定される取付部(8) に整合する位置で、それぞれの前記インナーフィン(4) に伝熱促進用の島部(9) が前記傾斜条部(2) または前記縁部(1) に連結され且つ、それらと面一に設けられたことを特徴とするヘリボーンタイプ液冷ヒートシンクである。 According to the present invention, a pair of parallel flat elongated edges (1) are provided on both edges in the width direction, and a large number of the edges (1) are inclined with respect to the edges. The slanted strips (2) are provided, slits (3) are opened between the slanted strips (2), and the slanted strips (2) and the edge (1) are flush with each other. At least a pair of inner fins (4) formed,
The pair of inner fins (4) are overlapped so that the inclined strips (2) cross each other, and the inner fins (4) are disposed between the pair of plates (5) or in the tube (6). In the helibone type liquid cooling heat sink in which the coolant flows between the pair of plates (5) or in the tube (6), and the heating element (7) is fixed in contact with the outer surface thereof,
In the position where the heating element (7) is aligned with the mounting portion (8) fixed to the outer surface of the plate (5) or the tube (6), each of the inner fins (4) has an island portion for promoting heat transfer ( 9) is a helicone type liquid-cooled heat sink, characterized in that it is connected to the inclined strip (2) or the edge (1) and is flush with them.

請求項２に記載の本発明は、請求項１において、
前記一対のインナーフィン(4) は同一形状に形成され、それらが互いに表裏または長手方向の前後を反対側に位置して重ね合わされたヘリボーンタイプ液冷ヒートシンクである。
請求項３に記載の本発明は、請求項２において、
前記各インナーフィン(4) は一対の前記縁部(1) 間に、それらに平行な中心条部(10) が存在するヘリボーンタイプ液冷ヒートシンクである。 The present invention according to claim 2 is the method according to claim 1,
The pair of inner fins (4) is a helicone type liquid cooling heat sink formed in the same shape and superposed on each other with the front and back sides or the front and rear in the longitudinal direction positioned opposite to each other.
The present invention described in claim 3 provides the method according to claim 2,
Each of the inner fins (4) is a helibone type liquid cooling heat sink in which a central strip (10) parallel to the pair of edges (1) is present.

本は発明のヒートシンクは、発熱体７の取付部８に整合する位置でインナーフィン４に伝熱促進用の島部９が設けられたものであるから、発熱体７の熱が島部９を介して直接各インナーフィン４に伝熱されると共に、そのインナーフィンに対し取付部８の反対側におけるプレート５またはチューブ６に伝熱され、ヒートシンク各部における熱交換を促進し得る。それにより、熱交換性の高いヒートシンクとなり得る。
一例として、図２において、発熱体７で発熱した熱21はそれに隣接する上面のプレート５および島部９の積層体からなる伝熱柱18を通り、各インナーフィン４に迅速に伝熱されると共に、下面のプレート５に伝熱される。そして、各プレートおよびインナーフィン４と冷却液11との間に熱交換が行われるものである。 Since the heat sink of the present invention is such that the heat sink 7 is provided with the island portion 9 for promoting heat transfer at a position aligned with the mounting portion 8 of the heating element 7, the heat of the heating element 7 causes the island portion 9 to be heated. The heat is directly transferred to each inner fin 4 through the heat transfer, and is also transferred to the plate 5 or the tube 6 on the opposite side of the mounting portion 8 with respect to the inner fin, so that heat exchange in each portion of the heat sink can be promoted. Thereby, it can become a heat sink with high heat exchange property.
As an example, in FIG. 2, the heat 21 generated by the heating element 7 passes through the heat transfer pillar 18 composed of a laminated body of the upper surface plate 5 and the island portion 9 adjacent thereto and is quickly transferred to each inner fin 4. Heat is transferred to the lower plate 5. Then, heat exchange is performed between each plate and inner fin 4 and the coolant 11.

次に、図面に基づいて本発明の実施の形態につき説明する。
図１は本発明のヒートシンクの要部分解斜視図である。また、図２はその組立て状態における横断面説明図であって、図３のII−II矢視断面図、図３は積層されたインナーフィン４の交差状態を示す平面図、図４はヒートシンクの縦断面図であって、図３のIV−IV矢視断面略図である。
このヒートシンクは、図１に示す如く複数のインナーフィン４（この例では４枚）と上下一対のプレート５との積層体からなる。各インナーフィン４は、四周に細長い縁部１が設けられると共に、その幅方向中間位置に中心条10が設けられ且つ、幅方向の両縁部１と中心条10とが多数の斜めに傾斜した細長い傾斜条部２で連結され、それら縁部１，中心条10，傾斜条部２が面一に形成されたものである。 Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a main part of a heat sink according to the present invention. 2 is a cross-sectional explanatory view in the assembled state, taken along the line II-II in FIG. 3, FIG. 3 is a plan view showing the crossed state of the laminated inner fins 4, and FIG. It is a longitudinal cross-sectional view, Comprising: It is the IV-IV arrow schematic cross-sectional view of FIG.
As shown in FIG. 1, the heat sink is composed of a laminate of a plurality of inner fins 4 (four in this example) and a pair of upper and lower plates 5. Each inner fin 4 is provided with a slender edge 1 on the four circumferences, a central strip 10 is provided at an intermediate position in the width direction, and the both edges 1 and the central strip 10 in the width direction are inclined at a large number of angles. They are connected by an elongated inclined strip portion 2, and the edge portion 1, the central strip 10, and the inclined strip portion 2 are formed flush with each other.

そして、中心条10の適宜位置に円板状の島部９が一体に設けられている。この島部９の位置は、プレート５の外面に取付けられる発熱体７（図２）に整合する取付部８の位置に形成され、発熱体７以上の大きさである。なお、この島部９の形状は円形であるが、それを方形または矩形にすることもできる。さらに島部９は、縁部１に隣接して配置してもよい。
また、この例では各インナーフィン４は同一形状のものが用いられ、それらの互いに隣接する面が表裏逆向きに重ねあわされるものである。その結果、一対の隣接するインナーフィン４は、図３に示す如く夫々の傾斜条部２が互いに交差する。 A disc-shaped island portion 9 is integrally provided at an appropriate position of the central strip 10. The position of the island portion 9 is formed at the position of the attachment portion 8 that matches the heating element 7 (FIG. 2) attached to the outer surface of the plate 5, and is larger than the heating element 7. The shape of the island portion 9 is circular, but it can be rectangular or rectangular. Further, the island portion 9 may be disposed adjacent to the edge portion 1.
In this example, the inner fins 4 having the same shape are used, and their adjacent surfaces are overlapped in the opposite direction. As a result, in the pair of adjacent inner fins 4, the inclined strips 2 intersect each other as shown in FIG. 3.

なお、各インナーフィン４の長手方向両端位置には、傾斜条部２が存在しないタンク部19が設けられている。また、この例では、下側のプレート５の長手方向両端には開口12が設けられ、そこに入口パイプ13，出口パイプ14（図４参照）が接続されている。
このようにしてなる複数のインナーフィン４，一対のプレート５間は、互いに一体的にろう付け固定される。そして各インナーフィン４の島部９は互いに整合し、全体として厚み方向に伝熱柱18を形成する。そして、その伝熱柱18に整合するプレート５の取付部８に発熱体７が接合される。この例では、発熱体７の基部16とセラミック15の絶縁板とがろう付けまたはハンダ付け接合され、セラミック15とプレート５とが熱応力吸収プレート17を介して一体的にろう付け固定されている。 In addition, the tank part 19 in which the inclined stripe part 2 does not exist is provided in the longitudinal direction both ends position of each inner fin 4. As shown in FIG. In this example, openings 12 are provided at both ends of the lower plate 5 in the longitudinal direction, and an inlet pipe 13 and an outlet pipe 14 (see FIG. 4) are connected thereto.
The plurality of inner fins 4 and the pair of plates 5 formed in this manner are integrally brazed and fixed to each other. And the island part 9 of each inner fin 4 aligns mutually, and forms the heat-transfer pillar 18 in the thickness direction as a whole. And the heat generating body 7 is joined to the attachment part 8 of the plate 5 aligned with the heat transfer column 18. In this example, the base 16 of the heating element 7 and the insulating plate of the ceramic 15 are brazed or soldered, and the ceramic 15 and the plate 5 are integrally brazed and fixed via the thermal stress absorbing plate 17. .

なお、この熱応力吸収プレート17は複数の図示しない弧状スリットが同心円上に配置され、セラミック15とプレート５との熱膨張差を熱応力吸収プレート17の変形により吸収するものである。そして図４において、液冷ヒートシンク20の入口パイプ13から冷却液11が流入し、各インナーフィン４のタンク部19から互いに交差する傾斜条部２間を上下方向に蛇行して迂回しながら、各インナーフィン４の他方のタンク部19より出口パイプ14に導かれ、その出口パイプ14から図示しない冷却液11の冷却用熱交換器を通過し、再び入口パイプ13に循環される。
そして図２において、発熱体７で発熱した熱21はそれに隣接する上面のプレート５および島部９の積層体からなる伝熱柱18を通り、各インナーフィン４に迅速に伝熱されると共に、下面のプレート５に伝熱される。そして、各プレートおよびインナーフィン４と冷却液11との間に熱交換が行われるものである。 The thermal stress absorbing plate 17 has a plurality of arc slits (not shown) arranged concentrically so as to absorb the thermal expansion difference between the ceramic 15 and the plate 5 by deformation of the thermal stress absorbing plate 17. In FIG. 4, the coolant 11 flows from the inlet pipe 13 of the liquid-cooled heat sink 20, and each of the inner fins 4 circulates between the inclined strips 2 intersecting each other in a vertical direction to make a detour. It is led to the outlet pipe 14 from the other tank portion 19 of the inner fin 4, passes through a cooling heat exchanger for cooling liquid 11 (not shown) from the outlet pipe 14, and is circulated to the inlet pipe 13 again.
In FIG. 2, the heat 21 generated by the heating element 7 passes through the heat transfer column 18 composed of a laminated body of the upper surface plate 5 and the island portion 9 adjacent thereto, and is quickly transferred to each inner fin 4. Heat is transferred to the plate 5. Then, heat exchange is performed between each plate and inner fin 4 and the coolant 11.

（変形例）
次に、図５は上下一対のインナーフィン４の傾斜条部２が平面山形に形成されてなり、その傾斜条部２の適宜位置に島部９が設けられている。このような同一形状の一対のインナーフィン４を長手方向に前後反転し、各傾斜条部２が互いに交差するように交互に配置したものである。 (Modification)
Next, in FIG. 5, the inclined strips 2 of the pair of upper and lower inner fins 4 are formed in a plane chevron shape, and island portions 9 are provided at appropriate positions of the inclined strips 2. Such a pair of inner fins 4 having the same shape are reversed in the longitudinal direction and are alternately arranged so that the inclined strips 2 cross each other.

次に、図６は本発明のヒートシンクの他の例であり、この例は夫々のインナーフィン４の長手方向両端部が開放され、一対のインナーフィン４がチューブ６に嵌入し、各接触部間が一体にろう付け固定されるものである。そしてインナーフィン４の島部９に整合する位置で、チューブ６の取付部８に発熱体７が接合固定されるものである。   Next, FIG. 6 shows another example of the heat sink of the present invention. In this example, both end portions in the longitudinal direction of each inner fin 4 are opened, and a pair of inner fins 4 are fitted into the tube 6, and between the contact portions. Are brazed and fixed together. The heating element 7 is joined and fixed to the mounting portion 8 of the tube 6 at a position aligned with the island portion 9 of the inner fin 4.

本発明の液冷ヒートシンクの要部分解斜視図。The principal part disassembled perspective view of the liquid cooling heat sink of this invention. 同組立て状態を示す横断面図であって、図３のII−II矢視における断面図。It is a cross-sectional view which shows the assembly state, Comprising: Sectional drawing in the II-II arrow of FIG. 同ヒートシンクに用いられるインナーフィン４の積層体を示す平面図。The top view which shows the laminated body of the inner fin 4 used for the heat sink.

同ヒートシンクの縦断面図であって、図３のIV−IV矢視における断面図。It is a longitudinal cross-sectional view of the heat sink, and is a cross-sectional view taken along arrows IV-IV in FIG. 本発明の他のヒートシンクにおけるインナーフィン４の積層状態を示す要部平面図。The principal part top view which shows the lamination | stacking state of the inner fin 4 in the other heat sink of this invention. 本発明のさらに他のヒートシンクの要部分解斜視図。The principal part disassembled perspective view of the further another heat sink of this invention.

符号の説明Explanation of symbols

１ 縁部
２ 傾斜条部
３ スリット
４ インナーフィン
５ プレート
６ チューブ
７ 発熱体
８ 取付部
９ 島部 DESCRIPTION OF SYMBOLS 1 Edge 2 Inclined strip 3 Slit 4 Inner fin 5 Plate 6 Tube 7 Heating element 8 Mounting part 9 Island part

10 中心条
11 冷却液
12 開口
13 入口パイプ
14 出口パイプ
15 セラミック
16 基部
17 熱応力吸収プレート
18 伝熱柱
19 タンク部
20 液冷ヒートシンク
21 熱 10 Central strip
11 Coolant
12 opening
13 Inlet pipe
14 Outlet pipe
15 Ceramic
16 base
17 Thermal stress absorbing plate
18 Heat transfer pillar
19 Tank section
20 liquid cooling heat sink
21 fever

Claims (3)

幅方向の両縁に一対の平行で平坦な細長い縁部(1) が設けられ、両縁部(1) の間にその縁部に対して斜めに多数の細長い傾斜条部(2) が設けられ、各傾斜条部(2) 間にそれぞれスリット(3) が開口され、各傾斜条部(2) と前記縁部(1) とが面一に形成された少なくとも一対のインナーフィン(4) を有し、
一対の前記インナーフィン(4) はその傾斜条部(2) が互いに交差するように重ね合わされて、それらのインナーフィン(4) が一対のプレート(5) 間またはチューブ(6) 内に配置され、前記一対のプレート(5) 間または前記チューブ(6) 内に冷却液が流通し、それらの外面に発熱体(7) が接触固定されるヘリボーンタイプ液冷ヒートシンクにおいて、
前記発熱体(7) が前記プレート(5) またはチューブ(6) 外面に固定される取付部(8) に整合する位置で、それぞれの前記インナーフィン(4) に伝熱促進用の島部(9) が前記傾斜条部(2) または前記縁部(1) に連結され且つ、それらと面一に設けられたことを特徴とするヘリボーンタイプ液冷ヒートシンク。 A pair of parallel flat elongated edges (1) are provided on both edges in the width direction, and a number of elongated inclined strips (2) are provided between the edges (1) obliquely with respect to the edges. And at least a pair of inner fins (4) in which slits (3) are opened between the inclined strips (2), and the inclined strips (2) and the edge (1) are formed flush with each other. Have
The pair of inner fins (4) are overlapped so that the inclined strips (2) cross each other, and the inner fins (4) are disposed between the pair of plates (5) or in the tube (6). In the helibone type liquid cooling heat sink in which the coolant flows between the pair of plates (5) or in the tube (6), and the heating element (7) is fixed in contact with the outer surface thereof,
In the position where the heating element (7) is aligned with the mounting portion (8) fixed to the outer surface of the plate (5) or the tube (6), each of the inner fins (4) has an island portion for promoting heat transfer ( 9) A helicone-type liquid-cooled heat sink, characterized in that 9) is connected to the inclined strip (2) or the edge (1) and is provided flush with them. 請求項１において、
前記一対のインナーフィン(4) は同一形状に形成され、それらが互いに表裏または長手方向の前後を反対側に位置して重ね合わされたヘリボーンタイプ液冷ヒートシンク。 In claim 1,
The pair of inner fins (4) is formed in the same shape, and is a helibone type liquid-cooled heat sink in which the front and back sides or the front and rear in the longitudinal direction are superposed on each other. 請求項２において、
前記各インナーフィン(4) は一対の前記縁部(1) 間に、それらに平行な中心条部(10) が存在するヘリボーンタイプ液冷ヒートシンク。 In claim 2,
Each of the inner fins (4) is a helibone type liquid cooling heat sink in which a central strip (10) parallel to the pair of edges (1) is present.
JP2007003283A 2007-01-11 2007-01-11 Helicon type liquid cooling heat sink Active JP5005356B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2012013249A (en) * 2010-06-29 2012-01-19 T Rad Co Ltd Plate lamination type heat sink
JP2013258219A (en) * 2012-06-12 2013-12-26 Saijo Inx Co Ltd Radiator
JP2016046430A (en) * 2014-08-25 2016-04-04 京セラ株式会社 Circuit board and electronic device
WO2018131243A1 (en) * 2017-01-13 2018-07-19 三桜工業株式会社 Cooling device and method for manufacturing cooling device

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JPS56100299A (en) * 1980-01-16 1981-08-12 Hisaka Works Ltd Plate of plate type heat exchanger
JPS61122493A (en) * 1984-11-16 1986-06-10 Hisaka Works Ltd Plate type heat exchanger
JPH0674678A (en) * 1992-08-24 1994-03-18 Nippondenso Co Ltd Lamination type heat exchanger and manufacture thereof
JP2000508751A (en) * 1996-04-16 2000-07-11 アルファ ラヴァル アーベー Plate heat exchanger
JP2005302898A (en) * 2004-04-08 2005-10-27 Mitsubishi Electric Corp Heat sink

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JPS56100299A (en) * 1980-01-16 1981-08-12 Hisaka Works Ltd Plate of plate type heat exchanger
JPS61122493A (en) * 1984-11-16 1986-06-10 Hisaka Works Ltd Plate type heat exchanger
JPH0674678A (en) * 1992-08-24 1994-03-18 Nippondenso Co Ltd Lamination type heat exchanger and manufacture thereof
JP2000508751A (en) * 1996-04-16 2000-07-11 アルファ ラヴァル アーベー Plate heat exchanger
JP2005302898A (en) * 2004-04-08 2005-10-27 Mitsubishi Electric Corp Heat sink

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012013249A (en) * 2010-06-29 2012-01-19 T Rad Co Ltd Plate lamination type heat sink
JP2013258219A (en) * 2012-06-12 2013-12-26 Saijo Inx Co Ltd Radiator
JP2016046430A (en) * 2014-08-25 2016-04-04 京セラ株式会社 Circuit board and electronic device
WO2018131243A1 (en) * 2017-01-13 2018-07-19 三桜工業株式会社 Cooling device and method for manufacturing cooling device
JP2018113409A (en) * 2017-01-13 2018-07-19 三桜工業株式会社 Cooler and manufacturing method of cooler
US11109511B2 (en) 2017-01-13 2021-08-31 Sanoh Industrial Co., Ltd. Cooling device and method of manufacturing cooling device
JP7028526B2 (en) 2017-01-13 2022-03-02 三桜工業株式会社 Cooling device and manufacturing method of cooling device

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