JP6349161B2 - Liquid cooling system - Google Patents
Liquid cooling system Download PDFInfo
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- JP6349161B2 JP6349161B2 JP2014122689A JP2014122689A JP6349161B2 JP 6349161 B2 JP6349161 B2 JP 6349161B2 JP 2014122689 A JP2014122689 A JP 2014122689A JP 2014122689 A JP2014122689 A JP 2014122689A JP 6349161 B2 JP6349161 B2 JP 6349161B2
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- 238000001816 cooling Methods 0.000 title claims description 133
- 239000007788 liquid Substances 0.000 title claims description 57
- 239000002826 coolant Substances 0.000 claims description 74
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 claims description 4
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 229910052782 aluminium Inorganic materials 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- 238000005219 brazing Methods 0.000 description 4
- 239000012809 cooling fluid Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- 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
- H01L23/3677—Wire-like or pin-like cooling fins or heat sinks
-
- 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
- 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
Description
この発明は、たとえば半導体素子などの電子部品からなる発熱体を冷却する液冷式冷却装置に関する。 The present invention relates to a liquid cooling type cooling device that cools a heating element made of an electronic component such as a semiconductor element.
この明細書および特許請求の範囲において、図２の上下を上下というもとのとする。 In this specification and claims, the top and bottom of FIG.
たとえば、電気自動車、ハイブリッド自動車、電車などに搭載される電力変換装置に用いられるＩＧＢＴ（Insulated Gate Bipolar Transistor）などのパワーデバイス（半導体素子）を冷却する液冷式冷却装置として、本出願人は、先に、頂壁および底壁を有しかつ内部に冷却液流路が設けられたケーシングと、ケーシング内の冷却液流路に配置された放熱器とを備えており、ケーシングの頂壁外面および底壁外面のうちいずれか一方に発熱体取付部が設けられ、放熱器が、基板、基板に対して突出するように千鳥配置状に設けられた高さの等しい複数の第１ピンフィン、および冷却液流路における冷却液の流れ方向上流端部および下流端部において基板に対して突出するように設けられかつ第１ピンフィンと高さの等しい複数の第２ピンフィンからなり、放熱器の第１および第２ピンフィンが、冷却液流路における冷却液流れ方向下流側に向かって一方に傾斜した複数の第１直線上、および同じく冷却液流れ方向下流側に向かって他方に傾斜した複数の第２直線上に並んで設けられ、放熱器の第１ピンフィンの横断面形状が菱形であり、かつ当該菱形の１つの鋭角部が冷却液流路における冷却液流れ方向上流側を向くとともに、当該角部と対角線上に位置する角部が同じく冷却液流れ方向下流側を向いており、第２ピンフィンの横断面形状が三角形または五角形であって平坦面が冷却液流れ方向上流側を向いている液冷式冷却装置を提案した(特許文献１参照)。 For example, as a liquid-cooled cooling device for cooling a power device (semiconductor element) such as an IGBT (Insulated Gate Bipolar Transistor) used in a power conversion device mounted on an electric vehicle, a hybrid vehicle, a train, etc., First, a casing having a top wall and a bottom wall and provided with a coolant flow path therein, and a radiator disposed in the coolant flow path in the casing, the outer surface of the top wall of the casing and A heating element mounting portion is provided on one of the outer surfaces of the bottom wall, and a plurality of first pin fins having the same height provided in a staggered manner so that the radiator protrudes from the substrate, and cooling A plurality of second pin fins provided so as to protrude from the substrate at the upstream end portion and the downstream end portion in the flow direction of the coolant in the liquid flow path and having the same height as the first pin fins. The first and second pin fins of the radiator are on a plurality of first straight lines inclined in one direction toward the downstream side in the coolant flow direction in the coolant flow path, and on the other side in the same direction toward the downstream side in the coolant flow direction. Provided side by side on a plurality of inclined second straight lines, the cross-sectional shape of the first pin fin of the radiator is a rhombus, and one acute angle portion of the rhombus is located upstream of the coolant flow direction in the coolant flow path And the corner located diagonally to the corner also faces the downstream side in the coolant flow direction, the cross-sectional shape of the second pin fin is a triangle or pentagon, and the flat surface is upstream in the coolant flow direction A liquid-cooling type cooling device facing the above has been proposed (see Patent Document 1).
特許文献１記載の液冷式冷却装置に用いられる放熱器は、ピンフィンの高さよりも厚肉の板状素材に、第１直線および第２直線のうち一方の直線と平行になるように切削加工を施すことによって、ピンフィンの高さと等しい深さを有する複数の溝を互いに間隔をおいて形成し、ついで他方の直線と平行になるように切削加工を施すことによって、溝の両側の残存部分における上端からピンフィンの高さと等しい部分を切除し、これにより基板および第１および第２ピンフィンを形成することによって製造されている。
The radiator used in the liquid cooling type cooling device described in
特許文献１記載の液冷式冷却装置においては、冷却液通路内を流体がスムーズに流れるので、冷却性能が優れたものになる。
In the liquid cooling type cooling device described in
ところで、最近では、液冷式冷却装置のさらなる性能向上が求められている。たとえば、特許文献１記載の液冷式冷却装置においては、冷却液流路の流路抵抗を低減するために、放熱器の第２ピンフィンを除去することが求められているが、この場合、第２ピンフィンのみを除去する作業は容易ではなく、加工コストが増加するという問題がある。
By the way, recently, further performance improvement of the liquid cooling type cooling device has been demanded. For example, in the liquid cooling type cooling device described in
この発明の目的は、上記問題を解決し、冷却性能をさらに向上しうる液冷式冷却装置を提供することにある。 An object of the present invention is to provide a liquid cooling type cooling device that can solve the above-described problems and can further improve the cooling performance.
本発明は、上記目的を達成するために以下の態様からなる。 In order to achieve the above object, the present invention comprises the following aspects.
1)頂壁および底壁を有しかつ内部に冷却液流路が設けられたケーシングと、ケーシング内の冷却液流路に配置された放熱器とを備えており、ケーシングの頂壁外面および底壁外面のうちいずれか一方に発熱体取付部が設けられ、放熱器が、ケーシングの頂壁および底壁のうちいずれか一方側から他方側に向かって突出した複数のピンフィンを有する液冷式冷却装置であって、
放熱器が、一定の長さを有する直線状ベース部、およびベース部の長手方向に間隔をおいてベース部と一体に形成されかつベース部に対して同方向に突出した複数のピンフィンからなる複数の放熱部材を備えており、放熱部材がプレス成形品からなり、すべての放熱部材が間隔をおいて配置されるとともに、相互に連結されることによって放熱器が形成されている液冷式冷却装置。
1) a casing having a top wall and a bottom wall and provided with a coolant flow path therein; and a radiator disposed in the coolant flow path in the casing. Liquid-cooled cooling, in which either one of the outer wall surfaces is provided with a heating element mounting portion, and the radiator has a plurality of pin fins that protrude from one of the top and bottom walls of the casing toward the other side. A device,
A plurality of heat sinks comprising a linear base portion having a fixed length and a plurality of pin fins that are integrally formed with the base portion and spaced in the longitudinal direction of the base portion and project in the same direction with respect to the base portion The liquid cooling type cooling device is provided with a heat radiating member, and the heat radiating member is formed of a press-molded product, and all the heat radiating members are spaced apart and connected to each other to form a radiator. .
2)放熱部材のベース部が、上下方向の一定の高さと、長手方向および上下方向と直角をなす方向の一定の厚みとを有しており、ベース部の上下両端部のうちいずれか一方にピンフィンが一体に形成され、すべての放熱部材がベース部の厚み方向に間隔をおいて配置され、放熱部材のベース部が、ケーシングの頂壁および底壁のうちのいずれか一方にろう付され、放熱部材のピンフィンの先端が、ケーシングの頂壁および底壁のうちのいずれか他方にろう付されている上記1)記載の液冷式冷却装置。 2) The base portion of the heat radiating member has a certain height in the vertical direction and a certain thickness in the longitudinal direction and a direction perpendicular to the vertical direction, and is attached to either one of the upper and lower ends of the base portion. Pin fins are integrally formed, all the heat radiating members are arranged at intervals in the thickness direction of the base portion, and the base portion of the heat radiating member is brazed to one of the top wall and the bottom wall of the casing, The liquid cooling type cooling apparatus as described in 1) above, wherein the tip end of the pin fin of the heat dissipating member is brazed to either the top wall or the bottom wall of the casing.
3)放熱器の放熱部材のピンフィンの先端が、ケーシングの頂壁および底壁のうち外面に発熱体取付部が設けられた側にろう付されている上記2)記載の液冷式冷却装置。 3) The liquid cooling type cooling device as described in 2) above, wherein the tip end of the pin fin of the heat radiating member of the radiator is brazed to the side of the top wall and bottom wall of the casing where the heating element mounting portion is provided on the outer surface.
4)全放熱部材が、すべてのピンフィンが２つの直線上に並ぶように配置され、全放熱部材が、長手方向を放熱部材の並んだ方向に向けた少なくとも１つの棒状連結部材により連結一体化されている上記1)〜3)のうちのいずれかに記載の液冷式冷却装置。 4) All heat dissipating members are arranged so that all pin fins are arranged on two straight lines, and all heat dissipating members are connected and integrated by at least one rod-like connecting member whose longitudinal direction is directed to the direction in which the heat dissipating members are arranged. The liquid cooling type cooling device according to any one of the above 1) to 3).
5)全放熱部材のベース部の長さおよびピンフィンの数が等しくなっており、全放熱部材が、すべてのピンフィンが、冷却液流路における冷却液の流れ方向にのびる複数の第１直線上、および冷却液流路の幅方向にのびかつ第１直線と直交する複数の第２直線上に並ぶように配置され、棒状連結部材が、全放熱部材における全放熱部材が並んだ方向と直交する方向の同一位置に存在する隣り合う２つのピンフィン間の隙間に圧入されており、これにより全放熱部材が連結一体化されている上記4)記載の液冷式冷却装置。 5) The length of the base part of all the heat radiating members and the number of pin fins are equal, and all the heat dissipating members are on a plurality of first straight lines in which all the pin fins extend in the coolant flow direction in the coolant flow path. The rod-like connecting member is arranged in the width direction of the coolant flow path and arranged on a plurality of second straight lines orthogonal to the first straight line, and the rod-like connecting member is orthogonal to the direction in which all the heat radiating members are arranged in all the heat radiating members The liquid-cooling type cooling device according to 4), wherein the heat-dissipating member is press-fitted into a gap between two adjacent pin fins at the same position, and all the heat radiating members are connected and integrated.
6)全放熱部材のうち少なくとも一部の放熱部材のベース部の長さおよびピンフィンの数が他の放熱部材とは異なっており、全放熱部材が、すべてのピンフィンが、冷却液流路における冷却液流れ方向下流側に向かって一方に傾斜した複数の第３直線上、および同じく冷却液流れ方向下流側に向かって他方に傾斜しかつ第３直線と直交する複数の第４直線上に並ぶように配置され、棒状連結部材が、全放熱部材における全放熱部材が並んだ方向と直交する方向の同一位置に存在する隣り合う２つのピンフィン間の隙間に圧入されており、これにより全放熱部材が連結一体化されている上記4)記載の液冷式冷却装置。 6) The length of the base part of at least some of the heat radiating members and the number of pin fins are different from those of other heat radiating members, and all the heat radiating members are cooled in the coolant flow path. Lined up on a plurality of third straight lines inclined in one direction toward the downstream side in the liquid flow direction and on a plurality of fourth straight lines inclined in the other direction toward the downstream side in the cooling liquid flow direction and orthogonal to the third straight line The rod-shaped connecting member is press-fitted into a gap between two adjacent pin fins present at the same position in the direction orthogonal to the direction in which all the heat radiating members are arranged in all the heat radiating members. 4. The liquid cooling type cooling device according to 4), which is integrally connected.
7)全放熱部材のベース部のピンフィンが形成された側と反対側の端部における全放熱部材が並んだ方向と直交する方向の同一位置に切り欠きが形成され、棒状連結部材が、全放熱部材のベース部の切り欠き内に圧入されることによって、全放熱部材が連結一体化されている上記4)記載の液冷式冷却装置。
7) All the base portion of the pin fins of the heat radiating member formed in the side the notch in the direction of the co-located all radiating member is orthogonal to the direction aligned at the opposite end is formed, the rod-like connecting member, all radiator The liquid cooling type cooling apparatus according to 4) above, wherein all the heat dissipating members are connected and integrated by being press-fitted into the notches in the base portion of the member.
8)全放熱部材のベース部の長さが等しくなっているとともに、全放熱部材のうち少なくとも一部の放熱部材のピンフィンの数が他の放熱部材とは異なっており、全放熱部材が、すべてのピンフィンが、冷却液流路における冷却液流れ方向下流側に向かって一方に傾斜した複数の第５直線上、および同じく冷却液流れ方向下流側に向かって他方に傾斜した複数の第６直線上に並ぶように配置されている上記7)記載の液冷式冷却装置。 8) The length of the base part of all the heat radiating members is equal, and the number of pin fins of at least some of the heat radiating members is different from other heat radiating members, and all the heat radiating members are all On the plurality of fifth straight lines inclined in one direction toward the downstream side in the coolant flow direction and the plurality of sixth straight lines inclined in the other direction toward the downstream side in the coolant flow direction. disposed in and above 7) Symbol mounting the liquid-cooling type cooling device so as to line up in.
9)ピンフィンの横断面形状が平行四辺形であり、当該平行四辺形の１つの角部が、冷却液流路における冷却液流れ方向上流側を向くとともに、当該角部と対角をなす角部が冷却液流れ方向下流側を向いている上記1)〜8)のうちのいずれかに記載の液冷式冷却装置。 9) The cross-sectional shape of the pin fin is a parallelogram, and one corner of the parallelogram faces the upstream side in the coolant flow direction in the coolant flow path, and the corner that forms a diagonal with the corner The liquid cooling type cooling device according to any one of the above 1) to 8), wherein is directed downstream in the coolant flow direction.
10)ピンフィンの横断面形状が菱形であり、当該菱形の鋭角となる２つの角部が、冷却液流路における冷却液流れ方向上流側および同下流側を向いている上記1)〜8)のうちのいずれかに記載の液冷式冷却装置。 10) The pin fins have a rhombus cross-sectional shape, and the two corners forming the acute angle of the rhombus face the upstream side and the downstream side in the coolant flow direction of the coolant channel. The liquid cooling type cooling device according to any one of the above.
11)ピンフィンが、長手方向の少なくとも１カ所で曲げられている上記1)〜10)のうちのいずれかに記載の液冷式冷却装置。 11) The liquid cooling type cooling apparatus according to any one of 1) to 10), wherein the pin fin is bent at at least one position in the longitudinal direction.
上記1)〜11)の液冷式冷却装置によれば、ケーシング内の冷却液流路に配置された放熱器が、一定の長さを有する直線状ベース部、およびベース部の長手方向に間隔をおいてベース部と一体に形成されかつベース部に対して同方向に突出した複数のピンフィンからなる複数の放熱部材を備えており、放熱部材がプレス成形品からなり、すべての放熱部材が間隔をおいて配置されるとともに、相互に連結されることによって放熱器が形成されているので、放熱部材のピンフィンの形状、ピンフィンのピッチなどを、ケーシングの頂壁外面および底壁外面のうちいずれか一方に設けられた発熱体取付部に取り付けられる発熱体から発せられる熱を冷却液流路を流れる冷却液に効率良く伝えるのに適した形状にすることができる。また、特許文献１記載の放熱器の製造時のように、多くの材料を切削する必要がないので、無駄な材料が少なくなる。しかも、特許文献１記載の液冷式冷却装置のように、冷却液流路の流路抵抗を低減するために、放熱器の第２ピンフィンを除去する必要がなく、加工コストの増加を抑制しうる。
According to the liquid cooling type cooling apparatus of 1) to 11) above, the radiator disposed in the coolant flow path in the casing is spaced in the longitudinal direction of the linear base portion having a certain length and the base portion. It is provided with a plurality of heat dissipating members formed of a plurality of pin fins that are formed integrally with the base portion and project in the same direction with respect to the base portion. Since the heat sink is formed by being connected to each other, the shape of the pin fins of the heat radiating member, the pitch of the pin fins, etc. can be selected from either the top wall outer surface or the bottom wall outer surface of the casing. A shape suitable for efficiently transferring the heat generated from the heating element attached to the heating element attachment portion provided on one side to the coolant flowing through the coolant flow path can be obtained. Moreover, since it is not necessary to cut many materials like the time of manufacture of the heat radiator of
上記2)および3)の液冷式冷却装置によれば、ケーシングの発熱体取付部に取り付けられた発熱体から放熱器への伝熱性能が向上する。 According to the liquid cooling type cooling device of 2) and 3) above, the heat transfer performance from the heating element attached to the heating element mounting portion of the casing to the radiator is improved.
上記4)の液冷式冷却装置によれば、全放熱部材を強固に連結一体化することができるので、液冷式冷却装置を製造する際の全放熱部材の取扱性が向上し、液冷式冷却装置の製造作業が簡単になる。 According to the liquid cooling type cooling device of the above 4), since all the heat radiating members can be firmly connected and integrated, the handleability of all the heat radiating members when manufacturing the liquid cooling type cooling device is improved, and the liquid cooling The manufacturing work of the cooling device is simplified.
上記5)〜8)の液冷式冷却装置によれば、放熱器の全放熱部材を連結部材により連結一体化する作業を比較的簡単に行うことができる。 According to the liquid cooling type cooling apparatus of 5) to 8), it is possible to relatively easily perform the operation of connecting and integrating all the heat radiating members of the radiator by the connecting members.
上記9)および10)の液冷式冷却装置によれば、冷却液流路において、冷却液がスムーズに流れ、圧力損失の増大を抑制することができる。 According to the liquid cooling type cooling apparatus of 9) and 10) above, the coolant flows smoothly in the coolant flow path, and the increase in pressure loss can be suppressed.
上記11)の液冷式冷却装置によれば、ピンフィンの表面積を増大させることができ、伝熱性能を向上させることができる。 According to the liquid cooling type cooling device of the above 11), the surface area of the pin fin can be increased and the heat transfer performance can be improved.
以下、この発明の実施形態を、図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
全図面を通じて同一物および同一部分には同一符号を付す。 Throughout the drawings, the same components and parts are denoted by the same reference numerals.
この明細書において、「アルミニウム」という用語には、純アルミニウムの他にアルミニウム合金を含むものとする。 In this specification, the term “aluminum” includes aluminum alloys in addition to pure aluminum.
また、以下の説明において、図２の左右を左右といい、図３の上側を前、これと反対側を後というものとする。
実施形態１
この実施形態は図１〜図４に示すものである。
In the following description, the left and right in FIG. 2 are referred to as left and right, the upper side in FIG. 3 is referred to as the front, and the opposite side is referred to as the rear.
This embodiment is shown in FIGS.
図１〜図３は液冷式冷却装置を示し、図４は液冷式冷却装置に用いられる放熱器を示す。 1 to 3 show a liquid cooling type cooling device, and FIG. 4 shows a radiator used in the liquid cooling type cooling device.
図１〜図３において、液冷式冷却装置(1)は、頂壁(2a)、底壁(2b)および周壁(2c)を有するアルミニウム製ケーシング(2)を備えており、ケーシング(2)内に、冷却液がケーシング(2)の長手方向の片側（左側）から他側（右側）に流れる冷却液流路(3)と、冷却液流路(3)よりも上流側（左側）に位置しかつ冷却液が流入する入口ヘッダ部(4)と、冷却液流路(3)よりも下流側（右側）に位置しかつ冷却液が流出する出口ヘッダ部(5)とが設けられ、ケーシング(2)内の冷却液流路(3)に、ケーシング(2)の頂壁(2a)外面および底壁(2b)外面のうちのいずれか一方、図示の例では頂壁(2a)外面に設けられた発熱体取付部(6)に取り付けられた発熱体(P)から発せられる熱を、冷却液流路(3)を流れる冷却液に放熱するアルミニウム製放熱器(7)が配置されている。 1 to 3, the liquid cooling type cooling device (1) includes an aluminum casing (2) having a top wall (2a), a bottom wall (2b), and a peripheral wall (2c), and the casing (2) Inside, the cooling fluid flow path (3) flows from one side (left side) of the casing (2) in the longitudinal direction to the other side (right side), and upstream (left side) of the cooling fluid flow path (3). An inlet header portion (4) that is located and into which the coolant flows, and an outlet header portion (5) that is located on the downstream side (right side) of the coolant channel (3) and from which the coolant flows out, One of the top wall (2a) outer surface and the bottom wall (2b) outer surface of the casing (2), the top wall (2a) outer surface in the illustrated example, in the coolant flow path (3) in the casing (2) An aluminum radiator (7) that dissipates the heat generated from the heating element (P) attached to the heating element mounting part (6) provided in the cooling fluid flow path (3) to the cooling fluid flow path (3) is arranged. ing.
詳細な図示は省略したが、ケーシング(2)は、頂壁(2a)および周壁(2c)を構成する下方に開口した箱状のアルミニウム製上構成部材を、底壁(2b)を構成する板状のアルミニウム製下構成部材上にろう付することにより形成されている。上構成部材および下構成部材は、少なくとも一面にろう材層を有するアルミニウムブレージングシートを使用して、ろう材層がケーシング(2)内側に位置するように形成されている。 Although the detailed illustration is omitted, the casing (2) is a plate that forms the bottom wall (2b) by using a box-shaped aluminum upper structural member that opens downward that constitutes the top wall (2a) and the peripheral wall (2c). It is formed by brazing on the aluminum bottom component member. The upper component member and the lower component member are formed using an aluminum brazing sheet having a brazing material layer on at least one surface so that the brazing material layer is located inside the casing (2).
ケーシング(2)内の入口ヘッダ部(4)および出口ヘッダ部(5)は、それぞれ冷却液流路(3)の幅方向（前後方向）にのびており、ケーシング(2)の周壁(2c)の左側部分における前後方向中央部に、入口ヘッダ部(4)に通じる冷却液入口(8)が設けられ、ケーシング(2)の周壁(2c)の右側部分における前後方向中央部に、出口ヘッダ部(5)に通じる冷却液出口(9)が設けられている。図示は省略したが、ケーシング(2)の冷却液入口(8)に、入口ヘッダ部(4)内に冷却液を送り込むアルミニウム製入口パイプが接続され、冷却液出口(9)に、出口ヘッダ部(5)内から冷却液を送り出すアルミニウム製出口パイプが接続されている。 The inlet header part (4) and outlet header part (5) in the casing (2) extend in the width direction (front-rear direction) of the coolant channel (3), respectively, and the peripheral wall (2c) of the casing (2) A coolant inlet (8) leading to the inlet header (4) is provided in the front-rear direction central part in the left part, and the outlet header part (in the front-rear direction central part in the right part of the peripheral wall (2c) of the casing (2) ( A coolant outlet (9) leading to 5) is provided. Although not shown, an aluminum inlet pipe that feeds the coolant into the inlet header (4) is connected to the coolant inlet (8) of the casing (2), and the outlet header is connected to the coolant outlet (9). (5) An aluminum outlet pipe for sending the coolant from the inside is connected.
発熱体(P)は、ＩＧＢＴなどのパワーデバイスや、ＩＧＢＴが制御回路と一体化されて同一パッケージに収納されたＩＧＢＴモジュールや、ＩＧＢＴモジュールにさらに保護回路が一体化されて同一パッケージに収納されたインテリジェントパワーモジュールなどからなり、絶縁部材(I)を介してケーシング(2)の頂壁(2a)外面の発熱体取付部(6)に取り付けられる。 The heating element (P) is a power device such as an IGBT, an IGBT module in which the IGBT is integrated with a control circuit and stored in the same package, or a protection circuit integrated with the IGBT module and stored in the same package. It consists of an intelligent power module or the like, and is attached to the heating element mounting portion (6) on the outer surface of the top wall (2a) of the casing (2) via the insulating member (I).
図２〜図４に示すように、放熱器(7)は、一定の長さを有する真っ直ぐな角棒状のベース部(12)、およびベース部(12)の長手方向に間隔をおいてベース部(12)と一体に形成されかつベース部(12)に対して同方向に突出した複数のピンフィン(13)からなる複数のアルミニウム製放熱部材(11)と、すべての放熱部材(11)を連結一体化する少なくとも１つ、ここでは２つの丸棒状のアルミニウム製連結部材(14)とからなる。 As shown in FIGS. 2 to 4, the radiator (7) includes a straight rectangular base portion (12) having a certain length, and a base portion spaced apart in the longitudinal direction of the base portion (12). Connects all the heat dissipating members (11) with a plurality of aluminum heat dissipating members (11) formed of a plurality of pin fins (13) formed integrally with (12) and protruding in the same direction with respect to the base part (12) It consists of at least one, and here two round bar-like aluminum connecting members (14) to be integrated.
放熱部材(11)はプレス成形品からなり、ベース部(12)は上下方向の一定の高さと、長手方向および上下方向と直角をなす方向の一定の厚みとを有している。ピンフィン(13)の横断面形状は方形であり、ベース部(12)の上下両端部のうちいずれか一方、ここでは上端部に上方に突出するように形成されている。全放熱部材(11)のベース部(12)の長さおよびピンフィン(13)の数は等しくなっており、全放熱部材(11)は、すべてのピンフィン(13)が、冷却液流路(3)における冷却液の流れ方向(左右方向)にのびる複数の第１直線(L1)上、および冷却液流路(3)の幅方向(前後方向)にのびかつ第１直線(L1)と直交する複数の第２直線(L2)上に並ぶように、ベース部(12)の長手方向を左右方向を向けた状態で前後方向に間隔をおいて配置されている。そして、放熱部材(11)のベース部(12)が、ケーシング(2)の底壁(2b)にろう付され、ピンフィン(13)の先端が、外面に発熱体取付部(6)が設けられた頂壁(2a)にろう付されている。 The heat radiating member (11) is made of a press-molded product, and the base portion (12) has a certain height in the vertical direction and a certain thickness in the direction perpendicular to the longitudinal direction and the vertical direction. The cross-sectional shape of the pin fin (13) is a square, and is formed so as to protrude upward from one of the upper and lower ends of the base portion (12), here the upper end. The length of the base part (12) of all the heat radiating members (11) and the number of pin fins (13) are equal, and all the heat dissipating members (11) are connected to the coolant channel (3 ) On the plurality of first straight lines (L1) extending in the coolant flow direction (left-right direction) and in the width direction (front-rear direction) of the coolant flow path (3) and orthogonal to the first straight line (L1). The base portions (12) are arranged at intervals in the front-rear direction with the longitudinal direction of the base portion (12) facing the left-right direction so as to be aligned on the plurality of second straight lines (L2). Then, the base part (12) of the heat radiating member (11) is brazed to the bottom wall (2b) of the casing (2), the tip of the pin fin (13) is provided with the heating element mounting part (6) on the outer surface. It is brazed to the top wall (2a).
連結部材(14)は、長手方向を放熱部材(11)の並んだ方向、ここでは前後方向に向けた状態で、全放熱部材(11)のベース部(12)における全放熱部材(11)が並んだ方向(前後方向)と直交する方向(左右方向)の同一位置に存在する隣り合う２つのピンフィン(13)間の隙間に圧入されている。ここでは、連結部材(14)は、全放熱部材(11)の左右両端のピンフィン(13)と、左右両端から２番目のピンフィン(13)との間の隙間に圧入されており、これにより全放熱部材(11)が連結一体化されている。 The connecting member (14) is configured so that all the heat dissipating members (11) in the base portion (12) of all the heat dissipating members (11) are in a state where the longitudinal direction is directed in the direction in which the heat dissipating members (11) are arranged, in this case, the front-rear direction. It is press-fitted into a gap between two adjacent pin fins (13) existing at the same position in the direction (left-right direction) orthogonal to the lined-up direction (front-rear direction). Here, the connecting member (14) is press-fitted into the gap between the pin fins (13) at the left and right ends of the entire heat radiating member (11) and the second pin fin (13) from the left and right ends. The heat radiating member (11) is connected and integrated.
上記構成の液冷式冷却装置(1)において、入口パイプから冷却液入口(8)を通って入口ヘッダ部(4)内に流入した冷却液は、冷却液流路(3)に配置された放熱器(7)のピンフィン(13)間を通って右方に流れる。冷却液流路(3)を右方に流れた冷却液は、出口ヘッダ部(5)内に入り、冷却液出口(5)を通って出口パイプに送り出される。発熱体(P)から発せられる熱は、絶縁部材(I)、ケーシング(2)の頂壁(2a)および放熱器(7)の各フィンプレート(11)を経て冷却液流路(3)内を流れる冷却液に放熱され、発熱体(P)が冷却される。
実施形態２
この実施形態は図５および図６に示すものである。
In the liquid cooling type cooling device (1) having the above configuration, the coolant flowing into the inlet header (4) from the inlet pipe through the coolant inlet (8) is disposed in the coolant channel (3). It flows to the right through the pin fins (13) of the radiator (7). The coolant that has flowed to the right through the coolant channel (3) enters the outlet header (5), and is sent out to the outlet pipe through the coolant outlet (5). Heat generated from the heating element (P) passes through the insulating member (I), the top wall (2a) of the casing (2), and the fin plates (11) of the radiator (7) in the coolant channel (3). Heat is dissipated by the coolant flowing through the heater, and the heating element (P) is cooled.
This embodiment is shown in FIG. 5 and FIG.
図５は液冷式冷却装置を示し、図６は放熱器を示す。 FIG. 5 shows a liquid cooling type cooling device, and FIG. 6 shows a radiator.
実施形態２の液冷式冷却装置(20)に用いられている放熱器(21)を構成する全放熱部材(11)のうち少なくとも一部の放熱部材(11)のベース部(12)の長さおよびピンフィン(13)の数が他の放熱部材(11)とは異なっている。全放熱部材(11)は、すべてのピンフィン(13)が、冷却液流路(3)における冷却液流れ方向下流側(右側)に向かって一方、ここでは前方に傾斜した複数の第３直線(L3)上、および同じく冷却液流れ方向下流側に向かって他方、ここでは後方に傾斜しかつ第３直線(L3)と直交する複数の第４直線(L4)上に並ぶように、ベース部(12)が第４直線(L4)上に位置した状態で第３直線(L3)の長さ方向に間隔をおいて配置されている。全放熱部材(11)の長さは、ベース部(12)の両端部が、冷却液流路(3)を囲む仮想の四角形上に位置するような長さに決められている。 The length of the base part (12) of at least a part of the heat radiating member (11) among all the heat radiating members (11) constituting the heat radiator (21) used in the liquid cooling type cooling device (20) of the second embodiment The number of pin fins (13) is different from that of the other heat dissipating members (11). The entire heat dissipating member (11) has all the pin fins (13) directed toward the downstream side (right side) in the coolant flow direction in the coolant channel (3), but here, a plurality of third straight lines (inclined forward) ( L3), and also toward the downstream side in the coolant flow direction, on the other hand, here, the base portion (inclined rearward and aligned on a plurality of fourth straight lines (L4) perpendicular to the third straight line (L3)) 12) are arranged on the fourth straight line (L4) with an interval in the length direction of the third straight line (L3). The length of all the heat radiating members (11) is determined such that both end portions of the base portion (12) are positioned on an imaginary quadrangle surrounding the coolant channel (3).
連結部材(14)は、長手方向を放熱部材(11)の並んだ方向、すなわち第３直線(L3)と平行な方向に向けた状態で、全放熱部材(11)のベース部(12)における全放熱部材(11)が並んだ方向と直交する方向の同一位置に存在する隣り合う２つのピンフィン(13)間の隙間に圧入されている。ここでは、連結部材(14)は、第４直線(L4)の長手方向に間隔をおいて２つ配置されており、一方の連結部材(14)が、全放熱部材(11)のうち右斜め前側に存在する複数の放熱部材(11)を除いた放熱部材(11)の隣り合う２つのピンフィン(13)間の隙間に圧入され、他方の連結部材(14)が、全放熱部材(11)のうち左斜め後側に存在する複数の放熱部材(11)を除いた放熱部材(11)の隣り合う２つのピンフィン(13)間の隙間に圧入されており、これにより全放熱部材(11)が連結一体化されている。 The connecting member (14) has a longitudinal direction in a direction in which the heat radiating members (11) are arranged, that is, a direction parallel to the third straight line (L3). It is press-fitted into a gap between two adjacent pin fins (13) existing at the same position in the direction orthogonal to the direction in which all the heat radiating members (11) are arranged. Here, two connecting members (14) are arranged at intervals in the longitudinal direction of the fourth straight line (L4), and one connecting member (14) is diagonally rightward of all the heat radiating members (11). The heat radiating member (11) excluding the plurality of heat radiating members (11) on the front side is press-fitted into the gap between two adjacent pin fins (13), and the other connecting member (14) is connected to the entire heat radiating member (11). The heat radiation member (11) excluding the plurality of heat radiation members (11) present on the left diagonal rear side is press-fitted into the gap between two adjacent pin fins (13). Are connected and integrated.
ここでは、一方の連結部材(14)によって全放熱部材(11)のうちの一部の放熱部材(11)が連結一体化され、他方の連結部材(14)によって全放熱部材(11)のうちの一部の放熱部材(11)が連結一体化され、全放熱部材(11)のうちの一部が両連結部材(11)により連結一体化されている。 Here, one of the radiating members (11) of all the heat radiating members (11) is connected and integrated by one connecting member (14), and the other of the radiating members (11) is integrated by the other connecting member (14). A part of the heat radiating member (11) is connected and integrated, and a part of the whole heat radiating member (11) is connected and integrated by both connecting members (11).
その他の構成は実施形態１の液冷式冷却装置(1)と同様である。
実施形態３
この実施形態は図７〜図９に示すものである。
Other configurations are the same as those of the liquid cooling type cooling apparatus (1) of the first embodiment.
This embodiment is shown in FIGS.
図７は液冷式冷却装置を示し、図８および図９は放熱器を示す。 FIG. 7 shows a liquid cooling type cooling device, and FIGS. 8 and 9 show a radiator.
実施形態３の液冷式冷却装置(30)に用いられている放熱器(31)は、一定の長さを有しかつ幅方向を上下方向に向けた真っ直ぐな帯板状のベース部(33)、およびベース部(33)の長手方向に間隔をおいてベース部(33)と一体に形成されかつベース部(33)に対して同方向に突出した複数のピンフィン(34)からなる複数のアルミニウム製放熱部材(32)と、すべての放熱部材(32)を連結一体化する少なくとも１つ、ここでは２つの丸棒状のアルミニウム製連結部材(35)とからなる。
The radiator (31) used in the liquid cooling type cooling device (30) of
放熱部材(32)はプレス成形品からなり、ベース部(33)は上下方向の一定の高さと、長手方向および上下方向と直角をなす方向の一定の厚みとを有している。ベース部(33)の下側縁部における長手方向の両端寄りの部分に、それぞれ切り欠き(36)が形成されている。ピンフィン(34)の横断面形状は菱形であり、ベース部(33)の上下両端部のうちいずれか一方、ここでは上端部に上方に突出するように形成されている。ピンフィン(34)の横断面形状の菱形における短い対角線は、ベース部(33)の厚みよりも長くなっている。全放熱部材(32)のベース部(12)の長さが等しくなっているとともに、全放熱部材(32)のうち少なくとも一部の放熱部材(32)のピンフィン(34)の数が他の放熱部材(32)とは異なっている。全放熱部材(32)は、すべてのピンフィン(34)が、冷却液流路(3)における冷却液流れ方向下流側に向かって一方、ここでは前方に傾斜した複数の第５直線(L5)上、および同じく冷却液流れ方向下流側に向かって他方、ここでは後方に傾斜した複数の第６直線(L6)上に並ぶように、ベース部(33)の長手方向を左右方向に向けた状態で前後方向に間隔をおいて配置されている。ピンフィン(34)の横断面形状である菱形における鋭角となる２つの角部は、冷却液流路(3)における冷却液流れ方向上流側および同下流側を向いている。そして、放熱部材(32)のベース部(33)が、ケーシング(2)の底壁(2b)にろう付され、ピンフィン(34)の先端が、外面に発熱体取付部(6)が設けられた頂壁(2a)にろう付されている。 The heat radiating member (32) is formed of a press-molded product, and the base portion (33) has a certain height in the vertical direction and a certain thickness in the direction perpendicular to the longitudinal direction and the vertical direction. Cutouts (36) are formed in portions of the lower edge portion of the base portion (33) near both ends in the longitudinal direction. The cross-sectional shape of the pin fin (34) is a rhombus, and is formed so as to protrude upward from one of the upper and lower ends of the base portion (33), here the upper end. A short diagonal line in the rhombus having the cross-sectional shape of the pin fin (34) is longer than the thickness of the base portion (33). The lengths of the base portions (12) of all the heat radiating members (32) are equal, and the number of pin fins (34) of at least some of the heat radiating members (32) among other heat radiating members (32) It is different from the member (32). The entire heat dissipating member (32) has all the pin fins (34) on the downstream side in the coolant flow direction in the coolant flow path (3), on the plurality of fifth straight lines (L5) inclined forward here. And in the state where the longitudinal direction of the base portion (33) is directed in the left-right direction so as to be arranged on a plurality of sixth straight lines (L6) inclined rearward in the same manner toward the downstream side in the coolant flow direction. They are arranged at intervals in the front-rear direction. Two acute corners in the rhombus, which is the cross-sectional shape of the pin fin (34), face the upstream side and the downstream side in the coolant flow direction in the coolant channel (3). Then, the base portion (33) of the heat radiating member (32) is brazed to the bottom wall (2b) of the casing (2), the tip of the pin fin (34) is provided with the heating element mounting portion (6) on the outer surface. It is brazed to the top wall (2a).
連結部材(35)は、長手方向を放熱部材(32)の並んだ方向、ここでは前後方向に向けた状態で、全放熱部材(32)のベース部(33)の切り欠き(36)内に圧入されている。 The connecting member (35) is placed in the notch (36) of the base portion (33) of all the heat dissipating members (32) with the longitudinal direction directed in the direction in which the heat dissipating members (32) are arranged, in this case, the front-rear direction. It is press-fitted.
放熱器(31)は、放熱部材(32)のベース部(33)がケーシング(2)の頂壁(2a)および底壁(2b)のうちの発熱体取付部(6)が設けられていない側、ここでは底壁(2b)の内面にろう付され、ピンフィン(34)の先端が、ケーシング(2)の頂壁(2a)および底壁(2b)のうち外面に発熱体取付部(6)が設けられた側、ここでは頂壁(2a)内面にろう付されている。 In the radiator (31), the base part (33) of the heat dissipation member (32) is not provided with the heating element mounting part (6) of the top wall (2a) and the bottom wall (2b) of the casing (2). Side, here, the inner surface of the bottom wall (2b) is brazed, and the tip of the pin fin (34) is attached to the outer surface of the top wall (2a) and the bottom wall (2b) of the casing (2) (6) ) Is brazed to the side provided with the inner wall, here the inner surface of the top wall (2a).
その他の構成は実施形態１の液冷式冷却装置(1)と同様である。
実施形態４
この実施形態は図１０〜図１２に示すものである。
Other configurations are the same as those of the liquid cooling type cooling apparatus (1) of the first embodiment.
This embodiment is shown in FIGS.
図１０は液冷式冷却装置を示し、図１１および図１２は放熱器を示す。 FIG. 10 shows a liquid cooling type cooling device, and FIGS. 11 and 12 show a radiator.
実施形態４の液冷式冷却装置(40)と実施形態３の液冷式冷却装置(30)との相違点は、用いられる放熱器(41)の放熱部材(32)のピンフィン(42)が、実施形態３と同様な横断面菱形のピンフィン(34)が、長手方向の少なくとも１カ所において曲げられていることにある。その他の構成は、実施形態３の液冷式冷却装置(30)と同様である。 The difference between the liquid cooling type cooling device (40) of the fourth embodiment and the liquid cooling type cooling device (30) of the third embodiment is that the pin fin (42) of the heat radiation member (32) of the radiator (41) used is different. The pin fin (34) having a rhombic cross section similar to that of the third embodiment is bent at at least one point in the longitudinal direction. Other configurations are the same as those of the liquid cooling type cooling device (30) of the third embodiment.
この発明による液冷式冷却装置は、電気自動車、ハイブリッド自動車、電車などに搭載される電力変換装置に用いられるＩＧＢＴなどのパワーデバイスを冷却するのに好適に用いられる。 The liquid cooling type cooling device according to the present invention is suitably used for cooling a power device such as an IGBT used in a power conversion device mounted on an electric vehicle, a hybrid vehicle, a train or the like.
(1)(20)(30)(40)：液冷式冷却装置
(2)：ケーシング
(2a)：頂壁
(2b)：底壁
(3)：冷却液流路
(6)：発熱体取付部
(7)(21)(31)(41)：放熱器
(11)(32)：放熱部材
(12)(33)：ベース部
(13)(34)(42)：ピンフィン
(14)(35)：連結部材
(36)：切り欠き
(L1)：第１直線
(L2)：第２直線
(L3)：第３直線
(L4)：第４直線
(L5)：第５直線
(L6)：第６直線
(1) (20) (30) (40): Liquid cooling type cooling device
(2): Casing
(2a): Top wall
(2b): Bottom wall
(3): Coolant flow path
(6): Heating element mounting part
(7) (21) (31) (41): Heatsink
(11) (32): Heat dissipation member
(12) (33): Base part
(13) (34) (42): Pin fin
(14) (35): Connecting member
(36): Notch
(L1): First straight line
(L2): 2nd straight line
(L3): 3rd straight line
(L4): 4th straight line
(L5): 5th straight line
(L6): 6th straight line
Claims (9)
放熱器が、一定の長さを有する直線状ベース部、およびベース部の長手方向に間隔をおいてベース部と一体に形成されかつベース部に対して同方向に突出した複数のピンフィンからなる複数の放熱部材を備えており、放熱部材がプレス成形品からなり、すべての放熱部材が間隔をおいて配置されるとともに、相互に連結されることによって放熱器が形成されており、
全放熱部材が、すべてのピンフィンが２つの直線上に並ぶように配置され、全放熱部材が、長手方向を放熱部材の並んだ方向に向けた少なくとも１つの棒状連結部材により連結一体化されており、
全放熱部材のベース部の長さおよびピンフィンの数が等しくなっており、全放熱部材が、すべてのピンフィンが、冷却液流路における冷却液の流れ方向にのびる複数の第１直線上、および冷却液流路の幅方向にのびかつ第１直線と直交する複数の第２直線上に並ぶように配置され、棒状連結部材が、全放熱部材における全放熱部材が並んだ方向と直交する方向の同一位置に存在する隣り合う２つのピンフィン間の隙間に圧入されており、これにより全放熱部材が連結一体化されている液冷式冷却装置。 A casing having a top wall and a bottom wall and provided with a coolant flow path therein, and a radiator disposed in the coolant flow path in the casing, the top wall outer surface and the bottom wall outer surface of the casing A liquid-cooling type cooling device having a plurality of pin fins that are provided with heating element mounting portions on one of them and the radiator protrudes from either one of the top wall and bottom wall of the casing toward the other side. There,
A plurality of heat sinks comprising a linear base portion having a fixed length and a plurality of pin fins that are integrally formed with the base portion and spaced in the longitudinal direction of the base portion and project in the same direction with respect to the base portion The heat dissipating member is made of a press-molded product, all the heat dissipating members are arranged at intervals, and a radiator is formed by being connected to each other ,
All the heat radiating members are arranged so that all the pin fins are arranged on two straight lines, and all the heat radiating members are connected and integrated by at least one rod-like connecting member whose longitudinal direction is directed to the direction in which the heat radiating members are arranged. ,
The length of the base portion of all the heat radiating members and the number of pin fins are equal, and all the heat radiating members are on the plurality of first straight lines extending in the flow direction of the coolant in the coolant flow path, and the cooling. The rod-shaped connecting members are arranged in the width direction of the liquid flow path and arranged on a plurality of second straight lines orthogonal to the first straight line, and the rod-like connecting members are the same in the direction orthogonal to the direction in which all the heat radiating members are arranged. A liquid-cooling type cooling device that is press-fitted into a gap between two adjacent pin fins that are present at positions, so that all the heat dissipating members are connected and integrated .
放熱器が、一定の長さを有する直線状ベース部、およびベース部の長手方向に間隔をおいてベース部と一体に形成されかつベース部に対して同方向に突出した複数のピンフィンからなる複数の放熱部材を備えており、放熱部材がプレス成形品からなり、すべての放熱部材が間隔をおいて配置されるとともに、相互に連結されることによって放熱器が形成されており、
全放熱部材が、すべてのピンフィンが２つの直線上に並ぶように配置され、全放熱部材が、長手方向を放熱部材の並んだ方向に向けた少なくとも１つの棒状連結部材により連結一体化されており、
全放熱部材のうち少なくとも一部の放熱部材のベース部の長さおよびピンフィンの数が他の放熱部材とは異なっており、全放熱部材が、すべてのピンフィンが、冷却液流路における冷却液流れ方向下流側に向かって一方に傾斜した複数の第３直線上、および同じく冷却液流れ方向下流側に向かって他方に傾斜しかつ第３直線と直交する複数の第４直線上に並ぶように配置され、棒状連結部材が、全放熱部材における全放熱部材が並んだ方向と直交する方向の同一位置に存在する隣り合う２つのピンフィン間の隙間に圧入されており、これにより全放熱部材が連結一体化されている液冷式冷却装置。 A casing having a top wall and a bottom wall and provided with a coolant flow path therein, and a radiator disposed in the coolant flow path in the casing, the top wall outer surface and the bottom wall outer surface of the casing A liquid-cooling type cooling device having a plurality of pin fins that are provided with heating element mounting portions on one of them and the radiator protrudes from either one of the top wall and bottom wall of the casing toward the other side. There,
A plurality of heat sinks comprising a linear base portion having a fixed length and a plurality of pin fins that are integrally formed with the base portion and spaced in the longitudinal direction of the base portion and project in the same direction with respect to the base portion The heat dissipating member is made of a press-molded product, all the heat dissipating members are arranged at intervals, and a radiator is formed by being connected to each other ,
All the heat radiating members are arranged so that all the pin fins are arranged on two straight lines, and all the heat radiating members are connected and integrated by at least one rod-like connecting member whose longitudinal direction is directed to the direction in which the heat radiating members are arranged. ,
The length of the base part and the number of pin fins of at least some of the heat radiating members are different from other heat radiating members, and all the heat radiating members have all the pin fins flowing in the coolant flow path. Arranged on a plurality of third straight lines inclined in one direction toward the downstream side in the direction, and on a plurality of fourth straight lines inclined in the other direction toward the downstream side in the coolant flow direction and orthogonal to the third straight line The rod-like connecting member is press-fitted into a gap between two adjacent pin fins at the same position in the direction orthogonal to the direction in which all the heat dissipating members are arranged in all the heat dissipating members. liquid-cooled-type cooling device which is of.
放熱器が、一定の長さを有する直線状ベース部、およびベース部の長手方向に間隔をおいてベース部と一体に形成されかつベース部に対して同方向に突出した複数のピンフィンからなる複数の放熱部材を備えており、放熱部材がプレス成形品からなり、すべての放熱部材が間隔をおいて配置されるとともに、相互に連結されることによって放熱器が形成されており、
全放熱部材が、すべてのピンフィンが２つの直線上に並ぶように配置され、全放熱部材が、長手方向を放熱部材の並んだ方向に向けた少なくとも１つの棒状連結部材により連結一体化されており、
全放熱部材のベース部のピンフィンが形成された側と反対側の端部における全放熱部材が並んだ方向と直交する方向の同一位置に切り欠きが形成され、棒状連結部材が、全放熱部材のベース部の切り欠き内に圧入されることによって、全放熱部材が連結一体化されている液冷式冷却装置。 A casing having a top wall and a bottom wall and provided with a coolant flow path therein, and a radiator disposed in the coolant flow path in the casing, the top wall outer surface and the bottom wall outer surface of the casing A liquid-cooling type cooling device having a plurality of pin fins that are provided with heating element mounting portions on one of them and the radiator protrudes from either one of the top wall and bottom wall of the casing toward the other side. There,
A plurality of heat sinks comprising a linear base portion having a fixed length and a plurality of pin fins that are integrally formed with the base portion and spaced in the longitudinal direction of the base portion and project in the same direction with respect to the base portion The heat dissipating member is made of a press-molded product, all the heat dissipating members are arranged at intervals, and a radiator is formed by being connected to each other ,
All the heat radiating members are arranged so that all the pin fins are arranged on two straight lines, and all the heat radiating members are connected and integrated by at least one rod-like connecting member whose longitudinal direction is directed to the direction in which the heat radiating members are arranged. ,
A notch is formed at the same position in the direction perpendicular to the direction in which all the heat dissipation members are arranged at the end opposite to the side where the pin fins are formed on the base of all the heat dissipation members. A liquid-cooled cooling device in which all the heat dissipating members are connected and integrated by being press-fitted into a notch in the base portion .
The liquid cooling type cooling device according to any one of claims 1 to 8 , wherein the pin fin is bent at at least one point in the longitudinal direction.
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