JP2558578B2 - Heat dissipation device for heating element - Google Patents
Heat dissipation device for heating elementInfo
- Publication number
- JP2558578B2 JP2558578B2 JP4285488A JP28548892A JP2558578B2 JP 2558578 B2 JP2558578 B2 JP 2558578B2 JP 4285488 A JP4285488 A JP 4285488A JP 28548892 A JP28548892 A JP 28548892A JP 2558578 B2 JP2558578 B2 JP 2558578B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heating element
- cooling
- holes
- cooling surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、発熱体用放熱装置、特
に半導体や電子機器等の冷却用として好適な発熱体放熱
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat radiator for a heating element, and more particularly to a heat radiator for a heating element suitable for cooling semiconductors, electronic equipment and the like.
【０００２】[0002]
【従来の技術】半導体や電子機器等の冷却には、従来、
種々の放熱装置が使用されている。例えば、図５に示す
ように、アルミニウムプレート１９に格子状フィン２１
をろう付けにより形成し、アルミニウムプレート１９を
冷却面２０として、冷却面２０に発熱体を取り付け、矢
印Ａ方向から冷却用空気を導入して発熱体からの熱をア
ルミニウムプレート１９によって分散させ、格子状フィ
ン２０で放熱するようにした格子フィン型放熱装置１８
がある。また、図６に示すように、ヒートパイプ２６を
受熱ブロック２４に挿着し放熱フィン２３を組み合わせ
て、受熱ブロック２４の外面に半導体等の発熱体を取り
付け、発熱体からの熱をヒートパイプ２６によって放熱
フィンに伝達し，矢印Ｂ方向から送風して冷却するよう
にしたヒートパイプ放熱装置２２も使用されている。2. Description of the Related Art For cooling semiconductors and electronic devices,
Various heat dissipation devices are used. For example, as shown in FIG.
Is formed by brazing, the aluminum plate 19 is used as the cooling surface 20, a heating element is attached to the cooling surface 20, cooling air is introduced from the direction of arrow A, and the heat from the heating element is dispersed by the aluminum plate 19 to form a grid. Lattice fin type heat radiating device 18 configured to radiate heat with the fins 20
There is. Further, as shown in FIG. 6, the heat pipe 26 is inserted into the heat receiving block 24, the heat radiating fins 23 are combined, a heating element such as a semiconductor is attached to the outer surface of the heat receiving block 24, and the heat from the heating element is transferred to the heat pipe 26. A heat pipe radiator 22 is also used in which the heat is dissipated to the radiator fins and is blown from the direction of arrow B for cooling.
【０００３】しかしながら、これらの放熱装置にはそれ
ぞれ問題点があり、信頼性の面で必ずしも十分なもので
はない。格子フィン型放熱装置においては、発熱量の大
きな発熱体に対応する場合、アルミニウムプレートの大
きさおよび厚さを増加し、格子数を増やして伝熱面積を
大きくする必要があるが、格子数を増やすとアルミニウ
ムプレートから格子状フィン端部への伝熱が十分でなく
なってアルミニウムプレート側と反対側の格子状フィン
端部の表面温度が上がらず、放熱性能が低下してしま
う。従って、格子フィン型放熱装置の放熱量には限界が
あり、発熱量の大きな発熱体の冷却用には適用できない
という難点がある。ヒートパイプ放熱装置は、受熱ブロ
ックからなる受熱部と放熱フィンからなる放熱部に分か
れているため、小型化、コンパクト化が難しく、またヒ
ートパイプは、過負荷時ドライアウトが発生すると、表
面温度が急激に上昇するという欠点もある。However, each of these heat dissipating devices has problems and is not always sufficient in terms of reliability. In the grid fin type heat dissipation device, in order to cope with a heating element with a large amount of heat generation, it is necessary to increase the size and thickness of the aluminum plate and increase the number of grids to increase the heat transfer area. If the number is increased, heat transfer from the aluminum plate to the end of the grid fin becomes insufficient, the surface temperature of the end of the grid fin on the side opposite to the aluminum plate side does not rise, and the heat dissipation performance deteriorates. Therefore, there is a limit to the amount of heat that can be dissipated by the lattice fin type heat dissipation device, and it cannot be applied to the cooling of a heating element that generates a large amount of heat. The heat pipe radiator is divided into a heat receiving part consisting of a heat receiving block and a heat radiating part consisting of radiating fins, so it is difficult to make it compact and compact. It also has the drawback of rising sharply.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来の発熱
体用放熱装置における上記問題点を解消し、放熱性能に
優れ、発熱量が大きい発熱体の冷却にも適用でき、コン
パクト化が可能な発熱体用放熱装置を提供することを目
的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems in the conventional heat dissipating device for a heat generating element, is excellent in heat dissipating performance, can be applied to cooling a heat generating element having a large calorific value, and can be made compact. An object of the present invention is to provide a heat dissipation device for a heat generating element.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めの本発明による発熱体用放熱装置は、外面に発熱体を
装着するための冷却面を具えた金属ブロックに、該冷却
面と平行する多数の冷却媒体流通孔を形成し、冷却面近
傍の金属ブロック内に前記流通孔と平行にヒートパイプ
を列設したことを構成上の基本的特徴とし、流通孔にね
じり板が挿着されること、および金属ブロックが多数の
貫通孔を並設したアルミニウム押出材のブロック片を積
層してなり、冷却面側最外部に貫通孔にヒートパイプが
挿着されることをそれぞれ第２、第３の特徴とする。In order to achieve the above object, a heat radiator for a heating element according to the present invention comprises a metal block having a cooling surface for mounting the heating element on an outer surface, and a metal block parallel to the cooling surface. A large number of cooling medium circulation holes are formed, and the heat pipe is arranged in a row in the metal block in the vicinity of the cooling surface in parallel with the circulation holes. And that the metal block is formed by laminating block pieces of aluminum extruded material in which a large number of through holes are arranged in parallel, and the heat pipe is inserted into the through holes at the outermost portion on the cooling surface side. It is characterized by 3.
【０００６】金属ブロックは、アルミニウム、銅等、熱
伝導性の良好な金属材料で構成するのが好ましく、例え
ば、図１に示すように、外面に発熱体を装着するための
広い冷却面３を具えた直方体状のブロック２に成形し、
冷却面３と平行する多数の冷却媒体流通孔５を穿設す
る。流通孔５は碁盤目状または千鳥状に配列するのが好
ましく、流通孔５の間隔、配列等は冷却効率を考慮して
決定する。流通孔５内には気体や液体からなる冷却媒体
が導入され、冷却面３に取り付けられた発熱体４からの
熱は、熱伝導により流通孔部に移動し、冷却媒体によっ
て運ばれ放出される。流通孔５の形状は、丸孔以外に必
要に応じて溝付きその他種々の形状のものを選択するこ
とができる。この場合、流通孔５内に、図２に示すよう
なねじり板１１を挿着しておけば、冷却媒体に乱流が与
えられて熱伝達率が向上し、冷却効果を高めることがで
きる。金属ブロックとしてアルミニウムブロックを使用
した場合には、ねじり板の挿着によりねじり板なしのと
きに比べ２〜３倍の冷却効率向上が達成される。ねじり
板１１は、通常アルミニウム、銅等の金属材料から成形
されるが、プラスチック等他の材料を適用することも可
能である。The metal block is preferably made of a metal material having good thermal conductivity such as aluminum or copper. For example, as shown in FIG. 1, a large cooling surface 3 for mounting a heating element on the outer surface is provided. Molded into a rectangular parallelepiped block 2
A large number of cooling medium circulation holes 5 are formed in parallel with the cooling surface 3. The flow holes 5 are preferably arranged in a checkerboard pattern or a zigzag pattern, and the intervals and arrangement of the flow holes 5 are determined in consideration of cooling efficiency. A cooling medium composed of a gas or a liquid is introduced into the circulation holes 5, and heat from the heating element 4 attached to the cooling surface 3 moves to the circulation holes by heat conduction and is carried and discharged by the cooling medium. . The shape of the flow holes 5 can be selected from various shapes other than round holes, such as those with grooves as required. In this case, if the twisted plate 11 as shown in FIG. 2 is inserted into the circulation hole 5, a turbulent flow is given to the cooling medium, the heat transfer coefficient is improved, and the cooling effect can be enhanced. When the aluminum block is used as the metal block, the insertion of the twisted plate achieves a 2-3 times improvement in cooling efficiency as compared with the case without the twisted plate. The twisted plate 11 is usually molded from a metal material such as aluminum and copper, but other materials such as plastic can be applied.
【０００７】冷却面３から流通孔部に伝達された発熱体
４の熱は、冷却媒体によって流通孔の出側に運ばれる
が、冷却媒体は次第に加熱されるため流通孔の出側に向
かい熱量に比例して温度上昇が生じる。このため、金属
ブロック２自体にも流通孔の方向に沿って温度差がで
き、金属ブロック２の冷却面３に取り付けられた被冷却
物である発熱体４の温度分布にも許容値以上の差が生じ
る場合がある。本発明では、上記温度差の問題を解消す
るために、冷却面近傍の金属ブロック内に流通孔と平行
にヒートパイプ６を列設する。金属ブロック２の流通孔
方向の温度差に基づいてヒートパイプ６の温度に差が生
じれば、ヒートパイプ６が作動して均熱化が図られ、被
冷却体は常に許容温度範囲内に制御される。The heat of the heating element 4 transferred from the cooling surface 3 to the flow hole is carried to the outlet side of the flow hole by the cooling medium, but since the cooling medium is gradually heated, the heat quantity goes to the outlet side of the flow hole. The temperature rises in proportion to. Therefore, the metal block 2 itself can have a temperature difference along the direction of the flow hole, and the temperature distribution of the heating element 4 which is the object to be cooled and is attached to the cooling surface 3 of the metal block 2 is more than the allowable value. May occur. In the present invention, in order to solve the problem of the temperature difference, the heat pipes 6 are arranged in parallel in the metal block near the cooling surface in parallel with the flow holes. If there is a difference in the temperature of the heat pipe 6 based on the temperature difference in the direction of the flow holes of the metal block 2, the heat pipe 6 operates to equalize the temperature and the object to be cooled is always controlled within the allowable temperature range. To be done.
【０００８】本発明の金属ブロックは、図３に示すよう
に、多数の貫通孔９を並設したアルミニウム押出材のブ
ロック片８を積層した積層体７より構成することもでき
る。この場合、並設した貫通孔のうち、冷却面３となる
側最外部の貫通孔１０をヒートパイプ挿通用として形成
し、アルミニウム押出材ブロック８の積層は、接着剤に
よる接合方式、ろう付けによる接合方式、押出材同志の
嵌合等による機械的接続方式等を適用して行われる。ア
ルミニウム押出材によれば、多数の貫通孔を有するブロ
ックを容易に作製することができ、押出材ブロック片の
積層も前記方式により容易に行うことができるから、製
作コストの低減が期待できる。As shown in FIG. 3, the metal block of the present invention can also be constituted by a laminated body 7 in which block pieces 8 of aluminum extruded material in which a large number of through holes 9 are arranged are laminated. In this case, among the through holes arranged side by side, the outermost through hole 10 on the side to be the cooling surface 3 is formed for inserting the heat pipe, and the aluminum extruded material block 8 is laminated by an adhesive bonding method or brazing. It is carried out by applying a joining method, a mechanical connection method by fitting together extruded materials, or the like. With the aluminum extruded material, a block having a large number of through holes can be easily produced, and the extruded material block pieces can be easily laminated by the above method, so that reduction of the production cost can be expected.
【０００９】[0009]
【作用】本発明は、金属ブロックに多数の流通孔を形成
し流通孔に冷却媒体を導入して放熱させるもので、伝熱
の機構がシンプルであるから、安定した放熱性能が得ら
れ、金属ブロック構造のため機械的衝撃にも強い。ヒー
トパイプを冷却面近傍の金属ブロック内に列設し均熱性
を向上させたので、信頼性の高い放熱性能が得られる。
流通孔に挿着されるねじり板は、冷却媒体の流量を均一
にし偏流によるブロック内温度のばらつきをなくし、ね
じりピッチの変更やねじり板を部分的に抜き取ることに
よって放熱性能の微調整を行うことができるから、ヒー
トパイプによる均熱効果の調整用としての役割を持たせ
ることも可能であるAccording to the present invention, a large number of through holes are formed in a metal block, and a cooling medium is introduced into the through holes to radiate heat. Since the heat transfer mechanism is simple, stable heat radiating performance can be obtained. Block structure also resists mechanical shock. Since the heat pipes are arranged in a row in the metal block near the cooling surface to improve the uniform heat distribution, highly reliable heat dissipation performance can be obtained.
For the torsion plate inserted in the flow hole, make the flow rate of the cooling medium uniform and eliminate the variation in the temperature inside the block due to uneven flow, and make fine adjustment of the heat dissipation performance by changing the torsion pitch or partially removing the torsion plate. Therefore, it is possible to have a role of adjusting the soaking effect by the heat pipe.
【００１０】[0010]
【実施例】以下、本発明の実施例を説明する。 実施例 図４に示すように、アルミニウムブロック２に多数の冷
却媒体流通孔５を穿設し、流通孔５にアルミニウム板か
ら成形したねじり板を挿着するとともに、ブロック２の
一端部にはヒートパイプ用の貫通孔を形成し、ヒートパ
イプ６を挿入した。このようにして作製された放熱装置
１のブロック２の一側にケーシング１４を取り付け、配
管１４を介してブロアー１３に連結した。ブロック２の
冷却面３に被冷却体（発熱体）４を取り付け、ブロアー
１３で空気を吸引して排出口１５より排出したところ、
発熱体４に対する冷却が効果的に行われた。冷却面の温
度は均一で、被冷却体４の温度は常に許容範囲内に維持
された。さらに、ブロック２の他側にもケーシング１６
を取り付けて配管１７を接続し、冷却面３に発熱体４を
取り付けて、ブロアー１３により空気を配管１７側に送
給し、配管１７から排出した。その結果、発熱体からの
十分な放熱効果が得られ、被冷却体は許容温度範囲内に
制御された。Embodiments of the present invention will be described below. Example As shown in FIG. 4, a large number of cooling medium circulation holes 5 were bored in an aluminum block 2, a twisted plate formed from an aluminum plate was inserted into the circulation holes 5, and heat was applied to one end of the block 2. A through hole for a pipe was formed and the heat pipe 6 was inserted. The casing 14 was attached to one side of the block 2 of the heat dissipation device 1 thus produced, and was connected to the blower 13 via the pipe 14. When the object to be cooled (heating element) 4 is attached to the cooling surface 3 of the block 2, air is sucked by the blower 13 and discharged from the discharge port 15,
The heating element 4 was effectively cooled. The temperature of the cooling surface was uniform, and the temperature of the cooled object 4 was always maintained within the allowable range. Furthermore, the casing 16 is provided on the other side of the block 2.
Was attached and the pipe 17 was connected, the heating element 4 was attached to the cooling surface 3, and air was supplied to the pipe 17 side by the blower 13 and discharged from the pipe 17. As a result, a sufficient heat radiation effect from the heating element was obtained, and the cooled body was controlled within the allowable temperature range.
【００１１】[0011]
【発明の効果】以上のとおり、本発明によれば、冷却面
の温度分布が均一で被冷却体の温度を常に許容範囲内に
制御でき、且つ優れた放熱性能を有する発熱体用放熱装
置が提供される。ねじり板の併用により装置のコンパク
ト化が達成され、アルミニウム押出材の積層方式によっ
て製作コストが低減される。As described above, according to the present invention, there is provided a heat dissipation device for a heating element, which has a uniform temperature distribution on the cooling surface, can always control the temperature of the object to be cooled within an allowable range, and has excellent heat dissipation performance. Provided. The combined use of the twisted plate achieves downsizing of the device, and the laminated method of aluminum extruded material reduces the manufacturing cost.
【図１】本発明の放熱装置を示す斜視図である。FIG. 1 is a perspective view showing a heat dissipation device of the present invention.
【図２】本発明の放熱装置に使用するねじり板を示す斜
視図である。FIG. 2 is a perspective view showing a twist plate used in the heat dissipation device of the present invention.
【図３】本発明の放熱装置を構成するアルミニウム押出
材の積層状態を示す一部斜視図である。FIG. 3 is a partial perspective view showing a laminated state of aluminum extruded materials constituting the heat dissipation device of the present invention.
【図４】本発明の放熱装置の全体構成を示す斜視図であ
る。FIG. 4 is a perspective view showing an overall configuration of a heat dissipation device of the present invention.
【図５】従来の発熱体用放熱装置の例を示す斜視図であ
る。FIG. 5 is a perspective view showing an example of a conventional heat radiator for a heating element.
【図６】従来の発熱体用放熱装置の他の例を示す斜視図
である。FIG. 6 is a perspective view showing another example of a conventional heat radiator for a heating element.
１ 放熱装置 ２ 金属ブロック ３ 冷却面 ４ 発熱体 ５ 流通孔 ６ ヒートパイプ ７ 積層体 ８ アルミニウム押出材 ９ 貫通孔 10 貫通孔 11 ねじり板 12 ケーシング 13 ブロアー 14 配管 15 排出口 16 ケーシング 17 配管 18 格子フィン型放熱装置 19 アルミニウムプレート 20 冷却面 21 格子状フィン 22 ヒートパイプ放熱装置 23 放熱フィン 24 受熱ブロック 25 冷却面 26 ヒートパイプ 1 Heat Dissipator 2 Metal Block 3 Cooling Surface 4 Heating Element 5 Flow Hole 6 Heat Pipe 7 Laminated Body 8 Aluminum Extruded Material 9 Through Hole 10 Through Hole 11 Torsion Plate 12 Casing 13 Blower 14 Piping 15 Exhaust 16 Casing 17 Piping 18 Lattice Fin Mold radiator 19 Aluminum plate 20 Cooling surface 21 Lattice fins 22 Heat pipe radiator 23 Radiating fins 24 Heat receiving block 25 Cooling surface 26 Heat pipe
Claims (3)
具えた金属ブロックに、該冷却面と平行する多数の冷却
媒体流通孔を形成し、冷却面近傍の金属ブロック内に前
記流通孔と平行にヒートパイプを列設したことを特徴と
する発熱体用放熱装置。1. A metal block having a cooling surface for mounting a heating element on an outer surface thereof, wherein a large number of cooling medium circulation holes are formed in parallel with the cooling surface, and the circulation holes are provided in the metal block near the cooling surface. A heat radiating device for a heating element, characterized in that a heat pipe is provided in parallel with the heat pipe.
記載の発熱体用放熱装置。2. The twist plate is inserted into the through hole.
The heat dissipation device for the heating element described.
アルミニウム押出材のブロック片を積層してなり、冷却
面側最外部の貫通孔にヒートパイプが挿着される請求項
１または請求項２記載の発熱体用放熱装置。3. A metal block is formed by stacking block pieces of aluminum extruded material in which a large number of through holes are arranged side by side, and a heat pipe is inserted into the outermost through holes of the cooling surface. The heat dissipation device for a heating element according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4285488A JP2558578B2 (en) | 1992-09-30 | 1992-09-30 | Heat dissipation device for heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4285488A JP2558578B2 (en) | 1992-09-30 | 1992-09-30 | Heat dissipation device for heating element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06120385A JPH06120385A (en) | 1994-04-28 |
| JP2558578B2 true JP2558578B2 (en) | 1996-11-27 |
Family
ID=17692174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4285488A Expired - Fee Related JP2558578B2 (en) | 1992-09-30 | 1992-09-30 | Heat dissipation device for heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2558578B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4265509B2 (en) * | 2003-12-03 | 2009-05-20 | 株式会社デンソー | Stacked cooler |
| DE102004057526B4 (en) | 2003-12-03 | 2020-08-20 | Denso Corporation | Stack cooler |
| WO2006115073A1 (en) * | 2005-04-21 | 2006-11-02 | Nippon Light Metal Company, Ltd. | Liquid-cooled jacket |
| JP4600220B2 (en) * | 2005-09-01 | 2010-12-15 | 三菱マテリアル株式会社 | Cooler and power module |
| US20140090818A1 (en) * | 2011-05-23 | 2014-04-03 | Ramot At Tel-Aviv University Ltd. | Heat exchanger device |
| KR101354814B1 (en) * | 2011-12-14 | 2014-01-27 | 삼성전기주식회사 | Semiconductor package |
-
1992
- 1992-09-30 JP JP4285488A patent/JP2558578B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06120385A (en) | 1994-04-28 |
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