JPH10190265A - Pin fin type heat radiator - Google Patents

Pin fin type heat radiator

Info

Publication number
JPH10190265A
JPH10190265A JP35536796A JP35536796A JPH10190265A JP H10190265 A JPH10190265 A JP H10190265A JP 35536796 A JP35536796 A JP 35536796A JP 35536796 A JP35536796 A JP 35536796A JP H10190265 A JPH10190265 A JP H10190265A
Authority
JP
Japan
Prior art keywords
pin
cooling air
pin fin
pin fins
fins
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.)
Pending
Application number
JP35536796A
Other languages
Japanese (ja)
Inventor
Kazuhide Takao
和英 鷹尾
Kiyoshi Oniki
清 鬼木
Hironobu Sonoda
広信 園田
Gouji Kan
剛司 貫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yaskawa Electric Corp filed Critical Yaskawa Electric Corp
Priority to JP35536796A priority Critical patent/JPH10190265A/en
Publication of JPH10190265A publication Critical patent/JPH10190265A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a heat radiator which obtains high cooling performance, by reducing the difference between the cooling performance on the windward side of a pin fin and that on the lee side, and making the whole pin fin function as an effective heat transmission face. SOLUTION: A pin fin type heat radiator comprises a base part 3 which is in contact with an electronic device 1 and is attached to a heat sink substrate 2, and a plurality of pin fins 4 each having an uniform cross section which are formed in parallel in the front/rear direction on one of the faces of the base part 3 along the discharge direction of a cooling air 5. The intervals between the plurality of pin fins 4 sequentially increase from the windward side toward the lee side. It is also possible that the interval between the flow direction of the cooling air 5 in the base part 3 and the width direction which is at the right angle increases toward the lee side. In this manner, a pressure loss per unit volume is reduce more on the lee side of the pin fins 4, the reduction in cooling air volume can be suppressed, and the difference in the cooling performance on the windward side and that on the lee side of the pin fins 4 can be reduced.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、制御盤や電子装置
等の冷却に用いられ、複数のピンフィンが平板上のベ−
ス部の一面に間隔をおいて立設されているピンフィン型
放熱装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for cooling a control panel, an electronic device, or the like, wherein a plurality of pin fins are mounted on a flat base.
The present invention relates to a pin fin-type heat radiating device that is erected on one surface of a fin portion with an interval.

【0002】[0002]

【従来の技術】近年、制御盤や電子装置において、高密
度実装化によって電子素子の発熱密度が著しく増加して
おり、電子素子から発生する熱を効率よく外部の冷却媒
体に伝熱させる必要から高効率冷却機構の開発が盛んに
行われている。一般に高効率な冷却装置として、針状の
熱伝導体から成るフィン(以下、ピンフィンと略す)を
備えるピンフィン型放熱装置がよく知られている。ピン
フィン型放熱装置は、ピンフィンの太さを細くするほど
伝熱表面の熱伝達率を大きくでき、また、高さを高くす
るほど伝熱面積を大きくでき放熱量を増やすことができ
る特徴がある。しかしながら、ピンの細径化や、高さを
高くするほど、熱抵抗が増加し冷媒へ十分に熱を伝える
ことができなくなり、フィン効率が悪くなり、さらに強
制空冷においてのみその伝熱特性を発揮するためにフィ
ン間には1m/s以上の風速が必要になるという問題が
ある。このような観点からピンフィンの熱伝達率、伝熱
面積およびフィン効率の兼ね合いを考慮し、最適なピン
フィンの太さと高さの設定がなされたピンフィン型放熱
装置が提案されている(例えば、特開平6ー32377
3号公報、特開平5ー190711号公報)。図7に従
来のピンフィン型放熱装置を示す。このピンフィン型放
熱装置は、電子素子1の放熱部が片面に装着されたヒ−
トシンク基板2と、ヒ−トシンク基板2の電子素子1と
反対側の面に固定された平板状のベ−ス部3と、ベ−ス
部3の一面においてその前後方向に沿って等間隔に、か
つ、複数並立して配設されるとともに底部から先端まで
矩形断面を有するピンフィン4から構成されており、さ
らに矢印向きの図示しない冷却ファンからの冷却風5
が、ヒートシンク基板2の面に対して平行に流れ、各ピ
ンフィン間を通過するようになっている。なお、ヒ−ト
シンク基板2とベ−ス部3は、ピンフィン4と同様に銅
やアルミ合金等の熱伝導性材料からできている。このよ
うな構成において、図示しない冷却ファンからの冷却風
5がその風上側に位置したピンフィン4の前端面から風
下側の後端面に向かって流れると、電子素子1で発生し
た熱がピンフィン4の底部から先端まで熱伝導で伝わっ
た後にピンフィン4の表面から熱伝達によって周囲の空
気へと伝わることによって冷却が行われていた。
2. Description of the Related Art In recent years, in control panels and electronic devices, the heat generation density of electronic elements has been significantly increased due to high-density mounting, and it is necessary to efficiently transfer heat generated from electronic elements to an external cooling medium. The development of high-efficiency cooling mechanisms is being actively pursued. In general, as a high-efficiency cooling device, a pin fin type heat radiating device including a fin (hereinafter, abbreviated as a pin fin) made of a needle-like heat conductor is well known. The pin fin type heat radiating device has a feature that the heat transfer coefficient of the heat transfer surface can be increased as the thickness of the pin fin is reduced, and the heat transfer area can be increased as the height is increased, thereby increasing the amount of heat radiation. However, as the pin diameter is reduced and the height is increased, the thermal resistance increases and the heat cannot be sufficiently transmitted to the refrigerant, the fin efficiency deteriorates, and the heat transfer characteristics are exhibited only in forced air cooling. Therefore, there is a problem that a wind speed of 1 m / s or more is required between the fins. From such a viewpoint, a pin fin type heat radiating device has been proposed in which the optimal pin fin thickness and height are set in consideration of the balance between the heat transfer coefficient, the heat transfer area and the fin efficiency of the pin fin (for example, see Japanese Patent Application Laid-Open No. HEI 9-103572). 6-32377
No. 3, JP-A-5-190711). FIG. 7 shows a conventional pin fin type radiator. In this pin fin type heat radiating device, a heat radiating portion of the electronic element 1 is mounted on one side.
A heat sink substrate 2, a flat base portion 3 fixed to the surface of the heat sink substrate 2 opposite to the electronic element 1, and an equal interval along the front-back direction on one surface of the base portion 3. A plurality of pin fins 4 arranged side by side and having a rectangular cross section from the bottom to the tip.
Flows parallel to the surface of the heat sink substrate 2 and passes between the pin fins. The heat sink substrate 2 and the base portion 3 are made of a heat conductive material such as copper or aluminum alloy, like the pin fins 4. In such a configuration, when cooling air 5 from a cooling fan (not shown) flows from the front end face of the pin fin 4 located on the windward side to the rear end face on the leeward side, heat generated by the electronic element 1 is generated by the pin fin 4. After being transmitted by heat conduction from the bottom to the tip, cooling is performed by being transmitted from the surface of the pin fin 4 to the surrounding air by heat transfer.

【0003】[0003]

【発明が解決しようとする課題】ところが、このような
ピンフィン型放熱装置では、ピンフィン4が冷却風5の
流れ方向に沿うベ−ス部2上の前後方向に並立して配設
されるため、図示しない冷却ファン等による強制空冷を
行うと、冷却風5の風上側から風下側に向かって各々の
ピンフィン4間の間隙を通り抜ける際に一つひとつのピ
ンフィン4に衝突して風の流れが乱れ、その結果とし
て、図8の冷却風5の流れに示すようにピンフィン4の
外部の空間に移動する現象が起こる。すなわち、ピンフ
ィン4は風下側に向かうに従って冷却ファンの風量が低
下するため、ピンフィン4の風下側は冷却風量の減少に
より風上側に比べて冷却性能が劣化し、ピンフィン4の
風上側の部分と風下側の部分との冷却性能に大きな差が
できる。したがって、ピンフィン全体を有効な熱伝達面
として機能せしめることができず十分な放熱効果が得ら
れないという問題があった。そこで、本発明は、ピンフ
ィンの外部へ逃げていく冷却風を少なくするとともに、
ピンフィンの風上側と風下側の冷却性能の差を小さく
し、ピンフィン全体を有効な熱伝達面として機能せしめ
るようにした、高い冷却性能を得ることのできるピンフ
ィン型放熱装置を提供することを目的とする。
However, in such a pin fin type heat radiating device, the pin fins 4 are arranged side by side in the front-rear direction on the base portion 2 along the flow direction of the cooling air 5. When forced air cooling is performed by a cooling fan or the like (not shown), when the cooling air 5 passes through the gap between the pin fins 4 from the windward side to the leeward side, it collides with each of the pin fins 4 and the flow of the wind is disturbed. As a result, as shown by the flow of the cooling air 5 in FIG. That is, since the air volume of the cooling fan decreases toward the leeward side of the pin fins 4, the cooling performance of the leeward side of the pin fins 4 is deteriorated as compared with the leeward side due to the decrease in the amount of cooling air. There is a great difference in cooling performance with the side part. Therefore, there is a problem that the entire pin fin cannot function as an effective heat transfer surface, and a sufficient heat radiation effect cannot be obtained. Therefore, the present invention reduces the cooling air escaping to the outside of the pin fins,
An object of the present invention is to provide a pin fin type heat radiator capable of obtaining high cooling performance, in which the difference between the cooling performance of the pin fin on the windward side and the leeward side is reduced and the entire pin fin functions as an effective heat transfer surface. I do.

【0004】[0004]

【課題を解決するための手段】上記問題を解決するた
め、本発明は発熱体の放熱部との接触面を有するベ−ス
部と、前記ベ−ス部の一面に冷却風の吐出方向に沿って
前後方向に長く並立して配設されるとともに円形状また
は多角形状の一様な断面を有する複数のピンフィンとか
らなるピンフィン型放熱装置において、前記複数のピン
フィンの間隔が、冷却風の風上側から風下側に向かうに
従って、順次拡がるように形成してなるものである。ま
た、前記ベ−ス部の冷却風の流れ方向と直角な幅方向の
間隔が、風上側から風下側に向かうに従って、順次拡が
るように形成してなるものである。
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a base having a contact surface with a heat radiating portion of a heating element, and a cooling air discharge direction on one surface of the base. And a plurality of pin fins having a uniform cross section of a circular or polygonal shape, and a plurality of pin fins having a uniform cross section in the front-rear direction. It is formed so as to expand sequentially from the upper side to the leeward side. The space in the width direction perpendicular to the flow direction of the cooling air in the base portion is formed so as to gradually increase from the windward side to the leeward side.

【0005】上記手段によりピンフィン型放熱装置で
は、ピンフィンが冷却風の流れ方向に沿う前後方向に長
く並立して配設され、かつ、ピンフィン間隔が風上側は
密、風下側は疎となるように配置し、風下側でピンフィ
ンと冷却風とが衝突する部分を減少させているので、冷
却風が風上側から風下側に向かって各ピンフィン間の間
隙を通り抜ける際において冷却風のピンフィンの外部の
空間への移動を抑え、冷却風をピンフィンの風下側の部
分に送り込むことができる。その結果、ピンフィンの風
下部まで到達する冷却風量が増加し、ピンフィンの風上
側の部分と風下側の部分との冷却性能に差を小さくする
ことができる。したがって、ピンフィン全体を有効な熱
伝達面として機能させることができ十分な放熱効果が得
られる。
By the above means, in the pin fin type heat radiating device, the pin fins are arranged so as to be long side by side in the front-rear direction along the flow direction of the cooling air, and the pin fins are arranged so as to be dense on the windward side and sparse on the leeward side. The space between the pin fins and the cooling air is reduced on the leeward side, so that the space outside the pin fins of the cooling air when the cooling air passes through the gap between the pin fins from the windward side to the leeward side is reduced. The cooling air can be sent to the leeward portion of the pin fin. As a result, the amount of cooling air reaching the leeward part of the pin fin increases, and the difference in cooling performance between the leeward part and the leeward part of the pin fin can be reduced. Therefore, the entire pin fin can function as an effective heat transfer surface, and a sufficient heat radiation effect can be obtained.

【0006】[0006]

【発明の実施の形態】以下、本発明の実施の形態を図を
参照しながら説明する。図1は本発明の第1の実施例を
示すピンフィン型放熱装置の斜視図である。図2は図1
のピンフィン配列を示す平面図である。なお、従来例と
同じ構成要素を示すものは同一符号を用いている。図に
おいて、電子素子1の放熱部と接触したヒ−トシンク基
板2上に装着されたベ−ス部3と、ベ−ス部3の一面に
間隔を置き複数並立して配置された矩形断面を有するピ
ンフィン4が設けられ、各々のピンフィン4に対して図
中の矢印向きに冷却風5が送られている構成は従来例と
同じである。従来例と異なる特徴は、ピンフィン4の間
隔が、風上側から風下側に向かうに従って密から疎へ順
次拡がるように形成して配置された点である。なお、ヒ
−トシンク基板2はピンフィン4を配設したベ−ス部3
と電子素子1との間に設けてあるが、ヒ−トシンク基板
2を取り除いて電子素子1をベ−ス部3に直接装着した
構成でも構わない。本実施例ではピンフィン4は1本あ
たり冷却風方向長さをLf 、冷却風5の方向と直角方向
にあるベ−ス部3の幅方向長さをB、ピンフィン4の冷
却風流れ方向の間隔をPn とし、ピンフィン間隔Pn
風下側に向かって、P1,P2、P3・・・・P7と順
次拡がる大きさの数値に設定したものである。また、ベ
−ス部3の幅方向における各々のピンフィン4の間隔は
Wで一定である。また、各ピンフィンの冷却風流れ方向
の長さLf と、ピンフィン間隔をPn との関係につい
て、例えば次のような式を仮定した。 Pn =an ・k・Lf (1) ただし、a、kは定数、nはべき乗数である。(1)式
からピンフィンの間隔Pn は風上側から風下側に向かう
に従って密から疎へ順次拡がるような値を有するもので
ある。このような構成において、従来の構造に比べてピ
ンフィン4の間隔が、風上側から風下側に向かうに従っ
て密から疎へ順次拡がるように形成して配置されている
ことから、風下側においてピンフィン4と冷却風5とが
衝突する部分を減少させているので、冷却風5がピンフ
ィン4の外部に逃げる量を少なくすることができ、より
多くの冷却風5をピンフィン4の風下側の部分に送り込
むことができる。これにより、風下側はピンフィン4間
の風速が増加し風下側〜冷却風5間の熱伝達率が向上す
るので、風上側との冷却性能の差が小さくなる。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a pin fin type heat radiating device showing a first embodiment of the present invention. FIG. 2 shows FIG.
FIG. 4 is a plan view showing the pin fin arrangement of FIG. The same components as those in the conventional example are denoted by the same reference numerals. In the figure, a base portion 3 mounted on a heat sink substrate 2 that is in contact with a heat radiating portion of an electronic element 1 and a rectangular cross section arranged on one surface of the base portion 3 at intervals are arranged. The configuration in which the pin fins 4 are provided and the cooling air 5 is sent to each of the pin fins 4 in the direction of the arrow in the drawing is the same as the conventional example. The feature different from the conventional example is that the interval between the pin fins 4 is formed and arranged so as to gradually increase from dense to sparse as going from the windward side to the leeward side. The heat sink substrate 2 has a base 3 on which the pin fins 4 are disposed.
Although it is provided between the electronic device 1 and the electronic device 1, a configuration in which the heat sink substrate 2 is removed and the electronic device 1 is directly mounted on the base portion 3 may be used. In this embodiment, the length of each pin fin 4 in the direction of the cooling air is L f , the length of the base portion 3 in the width direction perpendicular to the direction of the cooling air 5 is B, and the length of the pin fin 4 in the direction of the cooling air flow. The interval is set to P n , and the pin fin interval P n is set to a numerical value that gradually increases in the order of P 1, P 2, P 3... P 7 toward the leeward side. The distance between the pin fins 4 in the width direction of the base portion 3 is constant at W. Further, the length L f of the cooling air flow direction of the pin fins, the relationship between the pin fins distance between P n, assuming, for example, the following equation. P n = a n · k · L f (1) However, a, k is a constant, n represents an exponent. (1) The spacing P n of pin fins from the equation and has a sequential spread such values to sparse from dense toward the windward side on the leeward side. In such a configuration, the interval between the pin fins 4 is formed and arranged so as to gradually increase from dense to sparse as going from the windward side to the leeward side as compared with the conventional structure. Since the portion where the cooling air 5 collides with the cooling air 5 is reduced, the amount of the cooling air 5 escaping to the outside of the pin fin 4 can be reduced, and more cooling air 5 is sent to the leeward side of the pin fin 4. Can be. Thereby, the wind speed between the pin fins 4 on the leeward side increases, and the heat transfer coefficient between the leeward side and the cooling air 5 is improved, so that the difference in cooling performance from the leeward side becomes smaller.

【0007】次に、第2の実施例について説明する。図
3は本発明の第2の実施例を示すピンフィン型放熱装置
の平面図である。図4の(a)〜(h)は図3の各々A
A’線〜HH’線に沿う各ピンフィンの側断面図であ
る。なお、従来例と同じ構成要素を示すものは同一符号
を用いている。図3および図4において、冷却風5の風
上側から風下側に向かうに従って密から疎へ順次拡がる
ように形成して配置された点は第1の実施例と同じであ
るが、第1の実施例と異なるのは冷却風5の風上側から
風下側に向かうに従い、ベ−ス部の幅方向における各々
のピンフィン4の間隔をW1、W2、W3、・・・W8
と密から疎へ順次拡がるような構成を追加して設けたも
のである。このような構成において、従来の構造に比べ
てピンフィン4の間隔が、風上側から風下側に向かう方
向、および前記風上側から風下側に向かう方向と直角方
向に従って密から疎へ順次拡がるように形成して配置さ
れていることから、風下側においてピンフィン4と冷却
風5とが衝突する部分を第1の従来例に比べてさらに減
少させているので、冷却風5がピンフィン4の外部に逃
げる量を少なくし、より多くの冷却風5をピンフィン4
の風下側の部分に送り込むことができる。この結果、風
下側はピンフィン4間の風速が増加し風下側〜冷却風5
間の熱伝達率が向上するため、風上側との冷却性能の差
が小さくなる。
Next, a second embodiment will be described. FIG. 3 is a plan view of a pin fin type heat radiating device showing a second embodiment of the present invention. (A) to (h) of FIG.
It is a sectional side view of each pin fin along the A 'line-the HH' line. The same components as those in the conventional example are denoted by the same reference numerals. In FIGS. 3 and 4, the point that the cooling air 5 is formed and arranged so as to gradually spread from dense to sparse as going from the windward side to the leeward side of the cooling air 5 is the same as the first embodiment, but the first embodiment What is different from the example is that the distance between the pin fins 4 in the width direction of the base is W1, W2, W3,.
In addition, a configuration is added in such a manner as to gradually expand from dense to sparse. In such a configuration, the interval between the pin fins 4 is formed so as to gradually increase from dense to sparse according to a direction perpendicular to the leeward side from the leeward side and a direction perpendicular to the direction from the leeward side to the leeward side as compared with the conventional structure. Since the portion where the pin fins 4 and the cooling air 5 collide on the leeward side is further reduced as compared with the first conventional example, the amount of the cooling air 5 escaping to the outside of the pin fins 4 is reduced. The cooling air 5 and the pin fins 4
Can be sent to the leeward side of the As a result, the wind speed between the pin fins 4 on the leeward side increases, and
Since the heat transfer coefficient between the two is improved, the difference in cooling performance with the windward side is reduced.

【0008】次に、複数のピンフィンの間隔が冷却風の
流れ方向に従い風下側に向かって密から疎へ順次拡がる
ように配設したピンフィン型放熱装置を用いた実施例
と、ピンフィンの間隔が等しい従来のピンフィン型放熱
装置とを比較した。図5はベ−ス部の冷却風方向長さの
みピンフィン間隔を変えた場合のピンフィン間風速を示
す特性図である。図では、本実施例ではピンフィン一本
あたりの冷却風の流れ方向の長さLf とピンフィンの間
隔Pn との間に仮定した関係式(1)式において、Lf
=15(mm)、k=2とし、また、定数aを1.1、
1.2、1.3、1.4、1.5までそれぞれ変化させ
た場合の結果を示している。図5からわかるように、ピ
ンフィン間隔を風下側に向かうに従って密から疎へ順次
拡がるように形成した本実施例の方が、従来に比べてピ
ンフィン間の風速が大きくなる。また本実施例でのピン
フィン間隔が大きくなるほどピンフィン間の風速の劣化
が少ないという結果が得られることを確認した。また、
図6はベ−ス部の冷却風方向長さおよび幅方向長さのピ
ンフィン間隔を変えた場合のピンフィン間風速を示す特
性図である。図に示すようにベ−ス部の冷却風方向長さ
および幅方向長さのピンフィンの間風速を風下側に向か
うに従って密から疎へ順次拡がるように形成すると、冷
却風方向長さのみ変えた場合と同様な効果が得られる。
このように(1)式に従って本実施例ではピンフィンの
風上側と風下側の冷却性能の差を小さくし、十分な冷却
性能を得ることができる。なお、ピンフィンの間隔Pn
を(1)式で仮定したが、上記の式に限定されるもので
はない。
Next, the distance between the pin fins is equal to that of the embodiment using the pin fin type heat radiating device arranged so that the interval between the plurality of pin fins is gradually increased from dense to sparse according to the flow direction of the cooling air. A comparison was made with a conventional pin-fin heat dissipation device. FIG. 5 is a characteristic diagram showing the wind speed between pin fins when the pin fin interval is changed only for the length of the base portion in the cooling air direction. In the figure, in this embodiment in the assumed relationship (1) between the distance P n of length L f and pin fin of the cooling air flow direction per one pin fins, L f
= 15 (mm), k = 2, and the constant a is 1.1,
The results are shown when the values are changed to 1.2, 1.3, 1.4, and 1.5, respectively. As can be seen from FIG. 5, the wind speed between the pin fins is larger in the present embodiment in which the pin fin interval is formed so as to gradually increase from dense to sparse as going downwind. In addition, it was confirmed that the larger the pin fin interval in this example, the less the wind speed was reduced between the pin fins. Also,
FIG. 6 is a characteristic diagram showing the wind speed between the pin fins when the length of the base portion in the cooling air direction and the length in the width direction are changed. As shown in the figure, when the wind speed between the pin fins in the cooling air direction length and the width direction length of the base portion is formed so as to gradually increase from dense to sparse as going to the leeward side, only the length in the cooling air direction is changed. The same effect as in the case is obtained.
As described above, according to the present embodiment, the difference between the cooling performance on the leeward side and the leeward side of the pin fin is reduced according to the expression (1), and sufficient cooling performance can be obtained. The pin fin spacing P n
Is assumed by the equation (1), but is not limited to the above equation.

【0009】[0009]

【発明の効果】以上述べたように、本発明によれば、ピ
ンフィンの外部へ逃げていく冷却風を少なくするととも
に、ピンフィンの風上側と風下側の冷却性能の差を小さ
くし、ピンフィン全体を有効な熱伝達面として機能せし
めるようにした、高い冷却性能を得ることのできるピン
フィン型放熱装置を得る効果がある。
As described above, according to the present invention, the cooling air escaping to the outside of the pin fins is reduced, and the difference between the cooling performance on the windward side and the leeward side of the pin fins is reduced. There is an effect of obtaining a pin fin type heat radiating device which can function as an effective heat transfer surface and can obtain high cooling performance.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の第1の実施例を示すピンフィン型放熱
装置の斜視図である。
FIG. 1 is a perspective view of a pin fin type heat radiating device showing a first embodiment of the present invention.

【図2】図1のピンフィン配列を示す平面図である。FIG. 2 is a plan view showing the pin fin arrangement of FIG. 1;

【図3】本発明の第2の実施例を示すピンフィン型放熱
装置の平面図である。
FIG. 3 is a plan view of a pin fin type radiator showing a second embodiment of the present invention.

【図4】(a)〜(h)は図3の各々AA’線〜HH’
線に沿う各ピンフィンの側断面図である。
4 (a) to 4 (h) are AA ′ lines to HH ′ in FIG. 3, respectively.
It is a sectional side view of each pin fin along a line.

【図5】ベ−ス部の冷却風方向長さのみピンフィン間隔
を変えた場合のピンフィン間風速を示す特性図である。
FIG. 5 is a characteristic diagram showing the wind speed between pin fins when the pin fin interval is changed only for the length of the base portion in the cooling air direction.

【図6】ベ−ス部の冷却風方向長さと幅方向長さのピン
フィン間隔を変えた場合のピンフィン間風速を示す特性
図である
FIG. 6 is a characteristic diagram showing the wind speed between pin fins when the length of the base portion in the cooling air direction and the length in the width direction are changed.

【図7】従来例を示すピンフィン型放熱装置の斜視図で
ある。
FIG. 7 is a perspective view of a pin fin type radiator showing a conventional example.

【図8】冷却風がピンフィンに衝突した場合の流れを示
す模式図である。
FIG. 8 is a schematic diagram showing a flow when a cooling wind collides with a pin fin.

【符号の説明】[Explanation of symbols]

1:電子素子 2:ヒートシンク基板 3:ベ−ス部 4:ピンフィン 5:冷却風の流れ 1: Electronic element 2: Heat sink substrate 3: Base part 4: Pin fins 5: Flow of cooling air

───────────────────────────────────────────────────── フロントページの続き (72)発明者 貫 剛司 福岡県北九州市八幡西区黒崎城石2番1号 株式会社安川電機内 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takeshi Nuki 2-1, Kurosaki Castle Stone, Yawatanishi-ku, Kitakyushu-shi, Fukuoka

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 発熱体の放熱部との接触面を有するベ−
ス部と、前記ベ−ス部の一面に冷却風の吐出方向に沿っ
て前後方向に長く並立して配設されるとともに円形状ま
たは多角形状の一様な断面を有する複数のピンフィンと
からなるピンフィン型放熱装置において、 前記複数のピンフィンの間隔が、冷却風の風上側から風
下側に向かうに従って、順次拡がるように形成してなる
ことを特徴とするピンフィン型放熱装置。
A base having a contact surface with a heat radiating portion of a heating element.
And a plurality of pin fins which are disposed on one surface of the base portion in a longitudinally extending manner in the front-rear direction along the discharge direction of the cooling air and have a uniform circular or polygonal cross section. In the pin fin heat radiator, the pin fin heat radiator is formed so that an interval between the plurality of pin fins is gradually increased from the windward side to the leeward side of the cooling air.
【請求項2】 前記ベ−ス部の冷却風の流れ方向と直角
な幅方向の間隔が、風上側から風下側に向かうに従っ
て、順次拡がるように形成してなる請求項1記載のピン
フィン型放熱装置。
2. The pin-fin type heat radiation device according to claim 1, wherein the space in the width direction of the base portion in the width direction perpendicular to the flow direction of the cooling air is gradually expanded from the windward side to the leeward side. apparatus.
JP35536796A 1996-12-20 1996-12-20 Pin fin type heat radiator Pending JPH10190265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35536796A JPH10190265A (en) 1996-12-20 1996-12-20 Pin fin type heat radiator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35536796A JPH10190265A (en) 1996-12-20 1996-12-20 Pin fin type heat radiator

Publications (1)

Publication Number Publication Date
JPH10190265A true JPH10190265A (en) 1998-07-21

Family

ID=18443524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35536796A Pending JPH10190265A (en) 1996-12-20 1996-12-20 Pin fin type heat radiator

Country Status (1)

Country Link
JP (1) JPH10190265A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6591897B1 (en) * 2002-02-20 2003-07-15 Delphi Technologies, Inc. High performance pin fin heat sink for electronics cooling
JP2006350237A (en) * 2005-06-20 2006-12-28 Sharp Corp Light source device, lamp housing, lamp unit, and projection type image display apparatus
KR100692027B1 (en) 2005-01-06 2007-03-09 엘지전자 주식회사 Zig for heat sink of plasma display panel and conclusion method thereof
JP2013098530A (en) * 2011-11-04 2013-05-20 Samsung Electro-Mechanics Co Ltd Heat sink
DE102013101747A1 (en) 2012-02-24 2013-08-29 Mitsubishi Electric Corporation COOLER AND COOLING DEVICE
CN112588225A (en) * 2020-10-30 2021-04-02 浙江中科玖源新材料有限公司 Temperature balance's polyimide reation kettle in cauldron

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6591897B1 (en) * 2002-02-20 2003-07-15 Delphi Technologies, Inc. High performance pin fin heat sink for electronics cooling
KR100692027B1 (en) 2005-01-06 2007-03-09 엘지전자 주식회사 Zig for heat sink of plasma display panel and conclusion method thereof
JP2006350237A (en) * 2005-06-20 2006-12-28 Sharp Corp Light source device, lamp housing, lamp unit, and projection type image display apparatus
JP2013098530A (en) * 2011-11-04 2013-05-20 Samsung Electro-Mechanics Co Ltd Heat sink
KR101278313B1 (en) * 2011-11-04 2013-06-25 삼성전기주식회사 Heat sink
DE102013101747A1 (en) 2012-02-24 2013-08-29 Mitsubishi Electric Corporation COOLER AND COOLING DEVICE
CN103298317A (en) * 2012-02-24 2013-09-11 三菱电机株式会社 Cooler and cooling device
US9291404B2 (en) 2012-02-24 2016-03-22 Mitsubishi Electric Corporation Cooler and cooling device
DE102013101747B4 (en) * 2012-02-24 2020-09-24 Mitsubishi Electric Corporation COOLER
CN112588225A (en) * 2020-10-30 2021-04-02 浙江中科玖源新材料有限公司 Temperature balance's polyimide reation kettle in cauldron

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