JP4807346B2 - Cooling piping structure - Google Patents

Cooling piping structure Download PDF

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JP4807346B2
JP4807346B2 JP2007274626A JP2007274626A JP4807346B2 JP 4807346 B2 JP4807346 B2 JP 4807346B2 JP 2007274626 A JP2007274626 A JP 2007274626A JP 2007274626 A JP2007274626 A JP 2007274626A JP 4807346 B2 JP4807346 B2 JP 4807346B2
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nipple
cooling water
water channel
convex portion
horizontal
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JP2009105174A (en
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徹 浦野
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Description

本発明は、冷却配管構造に関する。   The present invention relates to a cooling piping structure.

電気自動車用インバータ装置には、構成部品の温度上昇を抑えるため、筐体内に冷却水路を配設しているものがある。   Some inverter devices for electric vehicles have a cooling water channel disposed in a casing in order to suppress the temperature rise of components.

例えば、特許文献1には、「一方、アルミニウム製の凹形の冷却水路形成部材2は、接合面にガスケット11を介在させて前記ヒートシンク1と水密状態に重合し、このヒートシンク1の裏側に、通水口10a,10bに連通する冷却水路2aを構成する。この冷却水路2aは、前記ヒートシンク1の表側の半導体素子3,電気接続部材8aおよびコンデンサ9の設置領域の裏側に位置するように形成し、この半導体素子3,電気接続部材8aおよびコンデンサ9の冷却効果を十分に高めることができるようにする。」と記載されている(段落[0015])。   For example, Patent Document 1 states, “On the other hand, the concave cooling water channel forming member 2 made of aluminum is polymerized in a watertight state with the heat sink 1 with a gasket 11 interposed on the joint surface, and on the back side of the heat sink 1, A cooling water channel 2a communicating with the water flow ports 10a and 10b is formed, and the cooling water channel 2a is formed so as to be positioned behind the installation area of the semiconductor element 3, the electrical connection member 8a, and the capacitor 9 on the front side of the heat sink 1. The cooling effect of the semiconductor element 3, the electrical connection member 8a and the capacitor 9 can be sufficiently enhanced "(paragraph [0015]).

従って、冷却水路形成部材2の下面に突出した通水口10aから冷却水が上向きに流入し、冷却水路形成部材2の冷却水路2aを水平方向に流れ、更に、冷却水路形成部材2の下面に突出した通水口10bから下向きに流出することになる。
特開平11−346480号
Accordingly, the cooling water flows upward from the water passage 10a protruding from the lower surface of the cooling water channel forming member 2, flows in the horizontal direction through the cooling water channel 2a of the cooling water channel forming member 2, and further protrudes from the lower surface of the cooling water channel forming member 2. It flows out downward from the water flow port 10b.
JP-A-11-346480

特許文献1に記載される電気自動車用インバータ装置は、冷却水路形成部材2の下面に通水口10a,10bが下向きに突出するため、この電気自動車用インバータ装置を電気自動車に搭載する前に、通水口10a,10bが床面に接するように荷積みすると、通水口10a,10bが破損する虞がある。
そのため、通水口10a,10bが床面に接しないよう、通水口10a,10bが横向なる様に横積みする必要があり、不安定な荷積みとなり、取り扱いが不便であった。
In the inverter device for an electric vehicle described in Patent Document 1, the water passages 10a and 10b protrude downward on the lower surface of the cooling water channel forming member 2, and therefore, before the electric vehicle inverter device is mounted on the electric vehicle, If the water ports 10a and 10b are loaded so as to be in contact with the floor surface, the water ports 10a and 10b may be damaged.
Therefore, it is necessary to horizontally stack the water inlets 10a and 10b so that the water outlets 10a and 10b do not contact the floor surface, resulting in unstable loading and inconvenient handling.

そこで、図6に示すように、L字のニップル04を使用することが考えられる。
L字のニップル04は、冷却配管などの出し方向を変えるために使用される湾曲した管体である。
そのため、図6に示すように、筐体03の上面にL字型のニップル04を取り付け、筐体03中に形成された冷却水路(図示省略)とL字のニップル04を接続すると、例えば、筐体03の冷却水路を上向きに流れる冷却水を図中横方向に流れを変えることができる。
Therefore, it is conceivable to use an L-shaped nipple 04 as shown in FIG.
The L-shaped nipple 04 is a curved tube body used to change the exit direction of a cooling pipe or the like.
Therefore, as shown in FIG. 6, when an L-shaped nipple 04 is attached to the upper surface of the housing 03 and a cooling water channel (not shown) formed in the housing 03 is connected to the L-shaped nipple 04, for example, The flow of the cooling water flowing upward in the cooling water channel of the housing 03 can be changed in the horizontal direction in the figure.

しかし、L字型のニップル04は、筐体03への圧入量の管理がストレート型のものに比べて難しく、また、L字型のニップル04にホースを差し込む場合に差込み量を管理するためにニップル形状を工夫(例えば、段部を設ける等)する必要がある。
本発明は、上記従来技術に鑑みてなされたものであり、筐体形状を工夫して、筐体全体を大きくせず、上記問題点を解消させる構造を提供することを目的とする。
However, the L-shaped nipple 04 is more difficult to manage the amount of press-fitting into the housing 03 than the straight type, and also to manage the amount of insertion when a hose is inserted into the L-shaped nipple 04. It is necessary to devise the nipple shape (for example, to provide a step portion).
The present invention has been made in view of the above prior art, and an object of the present invention is to provide a structure that solves the above-described problems without devising the shape of the housing to enlarge the entire housing.

上記課題を解決する本発明の請求項1に係る冷却配管構造は、筐体内部に配設される水平な水平冷却水路と、該水平冷却水路の端部に位置するよう前記筐体の側面に形成される凸部と、前記凸部に垂直上向きに挿入される直管状のニップルと、前記凸部内において前記水平冷却水路と前記ニップルとの間を接続する屈曲した屈曲冷却水路とを設け冷却配管構造において、前記水平冷却水路は、前記筐体の下部に設けられ、また、前記凸部は前記筐体の底面よりも高い位置に位置し、更に、前記ニップルの最下端は、前記筐体の底面よりも上方に位置することを特徴とする。 A cooling pipe structure according to claim 1 of the present invention for solving the above-described problems is provided on a side surface of the casing so as to be positioned at an end of the horizontal cooling water path disposed in the horizontal cooling water path. a convex portion being formed, provided with a straight tubular nipple to be inserted vertically upwards into the convex portion, and a bent cooling water passage that is bent connecting between the horizontal cooling channel to the nipple within the protrusion cooling In the piping structure , the horizontal cooling water channel is provided at a lower portion of the casing, the convex portion is located at a position higher than a bottom surface of the casing, and a lowermost end of the nipple is the casing. It is characterized by being located above the bottom surface of .

上記課題を解決する本発明の請求項に係る冷却配管構造は、請求項において、前記屈曲冷却水路は、前記水平冷却水路と接続する水平冷却水路部と前記ニップルと接続する垂直冷却水路部とを屈曲して接続してなり、前記水平冷却水路部は、前記凸部において水平方向に貫通する貫通孔を形成した後に該貫通孔を前記凸部側面で蓋にて閉塞ことにより形成されることを特徴とする。 The cooling piping structure according to a second aspect of the present invention for solving the above-mentioned problems is that, in the first aspect , the bent cooling water channel includes a horizontal cooling water channel portion connected to the horizontal cooling water channel and a vertical cooling water channel portion connected to the nipple. The horizontal cooling water channel portion is formed by forming a through hole penetrating in the horizontal direction in the convex portion and then closing the through hole with a lid on the side surface of the convex portion. It is characterized by that.

上記課題を解決する本発明の請求項に係る冷却配管構造は、請求項1又は2において、前記ニップルは、前記凸部に挿入される外径が小径なニップル小径部分と前記凸部から下向きに突き出す外径が大径なニップル大径部分とからなり、前記ニップル小径部分と前記ニップル大径部分との間に形成される段差が前記凸部下面に突き当てられることを特徴とする。 The cooling pipe structure according to a third aspect of the present invention for solving the above-mentioned problems is the cooling pipe structure according to the first or second aspect , wherein the nipple has a nipple small diameter portion having a small outer diameter inserted into the convex portion and a downward direction from the convex portion. The nipple has a large-diameter portion with a large outer diameter, and a step formed between the nipple small-diameter portion and the nipple large-diameter portion is abutted against the lower surface of the convex portion.

上記課題を解決する本発明の請求項に係る冷却配管構造は、請求項において、前記ニップルの前記ニップル大径部分に冷却水流出入用ホースが差し込まれ、該冷却水流出入用ホースの上端が前記凸部下面に突き当てられることを特徴とする。 The cooling pipe structure according to claim 4 of the present invention for solving the above-mentioned problem is that, in claim 3 , a cooling water inflow / outflow hose is inserted into the nipple large diameter portion of the nipple, and an upper end of the cooling water outflow / inflow hose is It is abutted against the lower surface of the convex part.

本発明は、筐体の側面に凸部を設け、この凸部内に冷却水路を形成して、直管状のニップルを凸部に挿入したので、冷却出し口の方向を変えることができ、また、凸部の突出量は直管状のニップルの管径および直管状のニップル保持の必要な肉厚分でよいためL字型のニップルを用いる場合よりも筐体からの飛び出し量を少なくでき小型化となる。
また、直管状のニップルの最下端を筺体の底面よりも上方に位置させることで、荷積みなどの取り扱いが容易となる。
In the present invention, a convex portion is provided on the side surface of the housing, a cooling water channel is formed in the convex portion, and a straight tubular nipple is inserted into the convex portion, so that the direction of the cooling outlet can be changed, The projecting amount of the convex portion may be the tube diameter of the straight tubular nipple and the thickness necessary for holding the straight tubular nipple, so that the amount of protrusion from the housing can be reduced compared to the case of using the L-shaped nipple, and the size can be reduced. Become.
Moreover, handling, such as loading, becomes easy by positioning the lowest end of a straight tubular nipple above the bottom face of a housing.

更に、凸部内に貫通孔を形成した後に、この貫通孔を蓋にて塞ぐことにより冷却水路を形成すると、容易に製造することができる。
また、水平冷却水路部と垂直冷却水路部とが直接接続されるため、冷却水路の曲がり部にRを形成しない小型化な冷却配管構造を提供することができる。
特に、ニップルに段差を設けてその段差を凸部下面に突き当てると、圧入量の管理が容易であり、品質安定化するという利点がある。
更に、ニップルに差し込まれる冷却水流出入用ホースを凸部下面に突き当てると、ホース差込管理も可能となる。
Furthermore, after forming a through-hole in a convex part, if this cooling hole is formed by closing this through-hole with a cover, it can manufacture easily.
In addition, since the horizontal cooling water channel and the vertical cooling water channel are directly connected, it is possible to provide a miniaturized cooling pipe structure that does not form R at the bent part of the cooling water channel.
In particular, when a step is provided in the nipple and the step is abutted against the lower surface of the convex portion, there is an advantage that the press-fitting amount can be easily managed and the quality is stabilized.
Furthermore, if the cooling water inflow / outflow hose to be inserted into the nipple is abutted against the lower surface of the convex portion, the hose insertion management is also possible.

以下に実施例1として説明する態様が本発明を実施するための最良の形態である。   The mode described below as Example 1 is the best mode for carrying out the present invention.

本発明の第1の実施例を図1〜図5に示す。図1は本実施例の冷却配管構造の正面図、図2は直管状ニップルの断面図、図3は筐体側面に形成される凸部の断面図、図4及び図5は何れも電気自動車用インバータ装置の斜視図である。
本実施例は、図4及び図5に示すように、電気自動車用インバータ装置に適用したものである。
A first embodiment of the present invention is shown in FIGS. FIG. 1 is a front view of a cooling pipe structure of the present embodiment, FIG. 2 is a cross-sectional view of a straight tubular nipple, FIG. 3 is a cross-sectional view of a convex portion formed on a side surface of a housing, and FIGS. FIG.
This embodiment is applied to an inverter device for an electric vehicle as shown in FIGS.

即ち、電気自動車用インバータ装置においては、半導体スイッチング素子を搭載したインバータ回路(図示省略)が筐体3内に収容されると共にこのインバータ回路に対して入出力用ケーブル1が接続される。
筐体3の下部には、インバータ回路の温度上昇を抑えるための略水平な冷却水路2(図1参照)が形成され、この冷却水路2の端部に位置するよう、筐体3の側面には立方体状の凸部(出っ張り)5が形成されている。凸部5は、冷却水路2の配置に合わせて、筺体3の底面よりも高い位置に位置している。
That is, in an inverter device for an electric vehicle, an inverter circuit (not shown) on which a semiconductor switching element is mounted is housed in a housing 3 and an input / output cable 1 is connected to the inverter circuit.
A substantially horizontal cooling water channel 2 (see FIG. 1) for suppressing the temperature rise of the inverter circuit is formed in the lower part of the housing 3, and is formed on the side surface of the housing 3 so as to be positioned at the end of the cooling water channel 2. Is formed with a cubic convex portion (protrusion) 5. The convex portion 5 is positioned higher than the bottom surface of the housing 3 in accordance with the arrangement of the cooling water channel 2.

凸部5には、図1に示すように、直管状(ストレート)のニップル4が垂直上向きに挿入されている。直管状のニップル4は、L字型のニップル04に比較して圧入の管理が容易であるという利点がある。
ニップル4の最下端は、筺体3の底面よりも上方に位置している。そのため、電気自動車用インバータ装置を車両に搭載する前に、底面を床につけるように平積みしても、ニップル4が床面に接することがなく、安定した荷積みが可能となるなど取り扱い上の利点がある。
As shown in FIG. 1, a straight tubular (straight) nipple 4 is inserted into the convex portion 5 vertically upward. The straight-tube nipple 4 has an advantage that the press-fitting management is easier than the L-shaped nipple 04.
The lowermost end of the nipple 4 is located above the bottom surface of the housing 3. Therefore, before mounting the inverter device for an electric vehicle on the vehicle, the nipple 4 does not come into contact with the floor surface even if the bottom surface is attached to the floor, so that stable loading is possible. There are advantages.

凸部5内には、筺体3内の冷却水路2とニップル4とを接続する屈曲した冷却水路6が形成されている。
冷却水路6は、冷却水路2と接続する水平な水路部6aと、ニップル4と接続する垂直な水路部6bとからなる。
冷却水路6のうち水平な水路部6aは、筺体3と共に凸部5を金型で一体成型する際に、凸部5を水平に貫通する管通孔を形成した後、この貫通孔を凸部側面で蓋7にて閉塞することにより形成すると製造が容易である。
A bent cooling water channel 6 that connects the cooling water channel 2 in the housing 3 and the nipple 4 is formed in the convex portion 5.
The cooling water channel 6 includes a horizontal water channel portion 6 a connected to the cooling water channel 2 and a vertical water channel portion 6 b connected to the nipple 4.
In the cooling water channel 6, the horizontal water channel portion 6 a is formed by forming a through-hole that penetrates the convex portion 5 horizontally when the convex portion 5 is integrally formed with the housing 3 with a mold. Manufacture is easy if it is formed by closing with a lid 7 on the side surface.

ニップル4は、図2に示すように、下部のニップル大径部分4aと、上部のニップル小径部分4bとからなる。
ニップル小径部分4bはニップル大径部分4aよりも外径が大きく、ニップル大径部分4aとニップル小径部分4bとの間には段差が形成され、この段差が凸部5の下面に突き当てて位置決めされる。
As shown in FIG. 2, the nipple 4 includes a lower nipple large diameter portion 4a and an upper nipple small diameter portion 4b.
The nipple small-diameter portion 4b has an outer diameter larger than that of the nipple large-diameter portion 4a, and a step is formed between the nipple large-diameter portion 4a and the nipple small-diameter portion 4b. Is done.

つまり、図3に示すように、凸部5の冷却水路6のうち垂直な水路部6bの内径とニップル小径部分4bの外径とがほぼ同じ大きさに設計されており、ニップル小径部分4bを凸部5に挿入すれば、ニップル大径部分4bが凸部5から下向きに突き出すことになる。
このようにニップル4をニップル大径部分4aとニップル小径部分4bとから構成して段差を設けると、ニップル4の圧入管理が容易となる。
That is, as shown in FIG. 3, the inner diameter of the vertical water channel portion 6 b of the cooling water channel 6 of the convex portion 5 and the outer diameter of the nipple small diameter portion 4 b are designed to be approximately the same size, and the nipple small diameter portion 4 b is If inserted into the convex portion 5, the nipple large-diameter portion 4 b protrudes downward from the convex portion 5.
When the nipple 4 is constituted by the nipple large-diameter portion 4a and the nipple small-diameter portion 4b and is provided with a step, the press-fitting management of the nipple 4 is facilitated.

更に、ニップル4が直管状であるため、図中では省略しているが、ニップル大径部分4bに冷却水流出入用ホースを差し込む際に、このホースの上端を凸部5の下面に突き当てることにより、ホース差込管理も容易となる利点がある。
上述した通り、本実施例では、筐体3の側面に凸部5を設け、この凸部5内に加工により冷却水路6を形成し、ストレートのニップル4を凸部5に挿入したので、L字型のニップル04を使用することなく、冷却出し口の方向を変えることができる。
Furthermore, since the nipple 4 has a straight tube shape, it is omitted in the drawing, but when the cooling water inflow / outflow hose is inserted into the nipple large diameter portion 4b, the upper end of the hose is abutted against the lower surface of the convex portion 5. Therefore, there is an advantage that hose insertion management is also easy.
As described above, in this embodiment, the convex portion 5 is provided on the side surface of the housing 3, the cooling water channel 6 is formed by processing in the convex portion 5, and the straight nipple 4 is inserted into the convex portion 5. The direction of the cooling outlet can be changed without using the letter-shaped nipple 04.

また、ストレートのニップル4を使用するため、L字型のニップル04を用いる場合よりも筺体3からの飛び出し量を少なくできる利点もある。
特に、L字型のニップル04ではなく、最も形状が簡単なストレートタイプのニップル4を使うので、圧入の管理が容易であり、品質安定化するという利点がある。
更に、ストレートタイプのニップル4を使うので、筐体突き当てでホース差込管理も可能となる。
Further, since the straight nipple 4 is used, there is an advantage that the amount of protrusion from the housing 3 can be reduced as compared with the case where the L-shaped nipple 04 is used.
In particular, since the straight nipple 4 having the simplest shape is used instead of the L-shaped nipple 04, there is an advantage that the press-fitting management is easy and the quality is stabilized.
Furthermore, since the straight type nipple 4 is used, the hose insertion management can be performed by the housing abutment.

本発明は、ストレートのニップルを使用するため、L字型のニップルを用いる場合よりも筺体からの飛び出し量を少なくできる冷却配管構造として広く利用可能なものである。   Since the straight nipple is used, the present invention can be widely used as a cooling pipe structure that can reduce the amount of protrusion from the housing as compared with the case of using an L-shaped nipple.

本発明の第1の実施例に係る冷却配管構造の正面図である。It is a front view of the cooling piping structure which concerns on 1st Example of this invention. 本発明の第1の実施例に使用される直管状ニップルの断面図である。It is sectional drawing of the straight tubular nipple used for the 1st Example of this invention. 本発明の第1の実施例に係る筐体側面に形成される凸部の断面図である。It is sectional drawing of the convex part formed in the housing | casing side surface which concerns on 1st Example of this invention. 電気自動車用インバータ装置の斜視図である。It is a perspective view of the inverter apparatus for electric vehicles. 電気自動車用インバータ装置の斜視図である。It is a perspective view of the inverter apparatus for electric vehicles. L字型のニップルを使用した冷却配管構造の正面図である。It is a front view of the cooling piping structure using an L-shaped nipple.

符号の説明Explanation of symbols

1 入出力用ケーブル
2,6 冷却水路
3 筺体
4 直管状(ストレート)のニップル
5 凸部
6a 水平な水路部
6b 垂直な水路部
DESCRIPTION OF SYMBOLS 1 Input / output cable 2,6 Cooling water channel 3 Housing 4 Straight pipe (straight) nipple 5 Convex part 6a Horizontal water channel part 6b Vertical water channel part

Claims (4)

筐体内部に配設される水平な水平冷却水路と、該水平冷却水路の端部に位置するよう前記筐体の側面に形成される凸部と、前記凸部に垂直上向きに挿入される直管状のニップルと、前記凸部内において前記水平冷却水路と前記ニップルとの間を接続する屈曲した屈曲冷却水路とを設け冷却配管構造において、前記水平冷却水路は、前記筐体の下部に設けられ、また、前記凸部は前記筐体の底面よりも高い位置に位置し、更に、前記ニップルの最下端は、前記筐体の底面よりも上方に位置することを特徴とする冷却配管構造。 A horizontal horizontal cooling water channel disposed inside the housing, a convex portion formed on the side surface of the housing so as to be positioned at an end of the horizontal cooling water channel, and a straight portion inserted vertically upward into the convex portion. In the cooling pipe structure provided with a tubular nipple and a bent cooling cooling water channel connecting the horizontal cooling water channel and the nipple in the convex portion, the horizontal cooling water channel is provided at a lower part of the casing. The cooling pipe structure is characterized in that the convex portion is positioned higher than the bottom surface of the casing, and the lowermost end of the nipple is positioned higher than the bottom surface of the casing . 請求項において、前記屈曲冷却水路は、前記水平冷却水路と接続する水平冷却水路部と前記ニップルと接続する垂直冷却水路部とを屈曲して接続してなり、前記水平冷却水路部は、前記凸部において水平方向に貫通する貫通孔を形成した後に該貫通孔を前記凸部側面で蓋にて閉塞することにより形成されることを特徴とする冷却配管構造。 2. The bent cooling water channel according to claim 1 , wherein the bent cooling water channel is formed by bending and connecting a horizontal cooling water channel portion connected to the horizontal cooling water channel and a vertical cooling water channel portion connected to the nipple. A cooling pipe structure formed by forming a through hole penetrating in a horizontal direction in a convex portion and then closing the through hole with a lid on the side surface of the convex portion. 請求項1又は2において、前記ニップルは、前記凸部に挿入される外径が小径なニップル小径部分と前記凸部から下向きに突き出す外径が大径なニップル大径部分とからなり、前記ニップル小径部分と前記ニップル大径部分との間に形成される段差が前記凸部下面に突き当てられることを特徴とする冷却配管構造。 3. The nipple according to claim 1, wherein the nipple includes a nipple small diameter portion with a small outer diameter inserted into the convex portion and a nipple large diameter portion with a large outer diameter protruding downward from the convex portion. A cooling pipe structure characterized in that a step formed between a small diameter portion and the nipple large diameter portion is abutted against the lower surface of the convex portion. 請求項において、前記ニップルの前記ニップル大径部分に冷却水流出入用ホースが差し込まれ、該冷却水流出入用ホースの上端が前記凸部下面に突き当てられることを特徴とする冷却配管構造。 4. The cooling pipe structure according to claim 3 , wherein a cooling water inflow / outflow hose is inserted into the nipple large diameter portion of the nipple, and an upper end of the cooling water outflow / inflow hose is abutted against the lower surface of the convex portion.
JP2007274626A 2007-10-23 2007-10-23 Cooling piping structure Expired - Fee Related JP4807346B2 (en)

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* Cited by examiner, † Cited by third party
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JPH0511116A (en) * 1991-07-03 1993-01-19 Hitachi Cable Ltd Light energy transmitter
JPH05267871A (en) * 1992-03-19 1993-10-15 Fujitsu Ltd Cooling module mounting structure
JPH07249721A (en) * 1994-03-10 1995-09-26 Fuji Electric Co Ltd Cooling body for power semiconductor element
JP3299394B2 (en) * 1994-09-12 2002-07-08 三菱電機株式会社 Electric equipment cooling device
JP3474363B2 (en) * 1996-07-08 2003-12-08 株式会社東芝 Power converter
JP2003249783A (en) * 2002-02-25 2003-09-05 Toshiba Corp Electronic apparatus
JP4333587B2 (en) * 2005-01-14 2009-09-16 三菱電機株式会社 Heat sink and cooling unit

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