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JP2005079325A - Heat pipe, cooling device having heat pipe, and electronic device equipped with cooling device - Google Patents

Heat pipe, cooling device having heat pipe, and electronic device equipped with cooling device Download PDF

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Publication number
JP2005079325A
JP2005079325A JP2003307423A JP2003307423A JP2005079325A JP 2005079325 A JP2005079325 A JP 2005079325A JP 2003307423 A JP2003307423 A JP 2003307423A JP 2003307423 A JP2003307423 A JP 2003307423A JP 2005079325 A JP2005079325 A JP 2005079325A
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Prior art keywords
heat
heat radiating
heat receiving
receiving end
outer tube
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Inventor
Isao Okutsu
功 奥津
Satoshi Ooka
聡 大岡
Hiroki Haba
寛樹 幅
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Toshiba Corp
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Toshiba Corp
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Priority to JP2003307423A priority Critical patent/JP2005079325A/en
Priority to TW093111133A priority patent/TW200508845A/en
Priority to US10/847,246 priority patent/US20050045310A1/en
Priority to CNA2004100475026A priority patent/CN1592567A/en
Publication of JP2005079325A publication Critical patent/JP2005079325A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
    • H10W40/43—
    • H10W40/73—
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/20—Indexing scheme relating to G06F1/20
    • G06F2200/201—Cooling arrangements using cooling fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To increase flexibility of the shape of a radiating body which is thermally connected to the heat radiation end of an external tube, and also to obtain a heat pipe which enables heat conduction of proper efficiency. <P>SOLUTION: A heat pipe (15) has an external tube (30) formed internally with a wick (31), and an operating fluid is sealed in this external tube. The external tube comprises a flat heat-receiving end (32), a flat heat-radiating end (33) in a direction different from that of the heat-receiving end, and a middle part (34) having a circular section for connecting the heat-receiving end to the heat radiation end. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、例えば電子部品の熱をヒートシンクに移送する際に用いるヒートパイプおよびこのヒートパイプを利用した冷却装置に関する。さらに、本発明は筐体の内部に発熱する電子部品を収容したポータブルコンピュータのような電子機器に係り、特に電子部品の熱をヒートパイプを介して放熱部に移送する構造に関する。   The present invention relates to a heat pipe used when transferring heat of an electronic component to a heat sink, for example, and a cooling device using the heat pipe. Furthermore, the present invention relates to an electronic device such as a portable computer that contains an electronic component that generates heat inside a housing, and more particularly to a structure that transfers heat of the electronic component to a heat radiating unit via a heat pipe.

例えばノート形のポータブルコンピュータに用いられるCPUは、処理速度の高速化や多機能化に伴い発熱量が増加している。CPUの温度が高くなり過ぎると、CPUの効率的な動作が失われたり、動作不能に陥るといった問題が生じてくる。   For example, CPUs used in notebook-type portable computers have increased in calorific value as the processing speed increases and the number of functions increases. If the CPU temperature becomes too high, problems such as loss of efficient CPU operation or inability to operate will arise.

このことから、従来ではCPUの熱を外部に逃す様々な放熱対策が講じられている。CPUを冷却する代表的な手段としては、ヒートパイプやヒートシンクが知られている。ヒートパイプは、内側にウイックを有する金属製の外管を備え、この外管の内部に水等の作動液が封入されている。外管は、受熱端部と、この受熱端部の反対側に位置する放熱端部を有している。外管の受熱端部は受熱板を介してCPUに熱的に接続されているとともに、外管の放熱端部はヒートシンクに熱的に接続されている。   For this reason, various heat dissipation measures are conventionally taken to release the heat of the CPU to the outside. Heat pipes and heat sinks are known as typical means for cooling the CPU. The heat pipe includes a metal outer tube having a wick on the inside, and a working fluid such as water is sealed inside the outer tube. The outer tube has a heat receiving end and a heat radiating end located on the opposite side of the heat receiving end. The heat receiving end of the outer tube is thermally connected to the CPU through a heat receiving plate, and the heat radiating end of the outer tube is thermally connected to the heat sink.

この構成によると、CPUの熱は、受熱板からヒートパイプの受熱端部に伝えられる。この熱伝導により受熱端部内の作動液が加熱されて蒸気となる。この蒸気は、外管内の蒸気通路を通じて受熱端部から放熱端部に向けて流れる。放熱端部に導かれた蒸気は、ここで凝縮する。この凝縮により放出された熱は、放熱端部からヒートシンクへの熱伝導により拡散され、このヒートシンクの表面から放出される。   According to this configuration, the heat of the CPU is transmitted from the heat receiving plate to the heat receiving end of the heat pipe. Due to this heat conduction, the hydraulic fluid in the heat receiving end is heated to become steam. This steam flows from the heat receiving end toward the heat radiating end through the steam passage in the outer tube. The vapor led to the heat radiating end condenses here. The heat released by this condensation is diffused by heat conduction from the heat radiating end to the heat sink, and is released from the surface of the heat sink.

放熱端部で液化された作動液は、毛細管力によりウイックを伝わって受熱端部に戻り、再びCPUの熱を受ける。この作動液の蒸発・凝縮の繰り返しによりCPUの熱がヒートシンクに移送される（例えば特許文献１参照）。
特開２００１−２５１０７９号公報 The hydraulic fluid liquefied at the heat dissipating end is transmitted through the wick by capillary force, returns to the heat receiving end, and receives heat from the CPU again. The heat of the CPU is transferred to the heat sink by repeating the evaporation and condensation of the hydraulic fluid (see, for example, Patent Document 1).
JP 2001-251079 A

上記特許文献１では、ヒートパイプの設置スペースを少なく抑えるために、外管を全長に亘って偏平に押し潰している。さらに、ヒートパイプを水平方向へ略９０°折り曲げて熱移送を行う際には、偏平な外管を受熱端部と放熱端部との間で立体的に捩じるとともに、１８０°折り返している。   In Patent Document 1, the outer tube is flattened over the entire length in order to reduce the installation space of the heat pipe. Further, when heat transfer is performed by bending the heat pipe in the horizontal direction by approximately 90 °, the flat outer tube is twisted three-dimensionally between the heat receiving end portion and the heat radiating end portion and is also turned 180 °. .

ところが、特許文献１によると、偏平な外管を捩じって折り返しているので、偏平な受熱端部と偏平な放熱端部が略同一面上に位置することになる。このため、受熱端部と放熱端部が同じ方向に偏平となり、放熱端部にヒートシンクを熱的に接続するに際して、このヒートシンクの姿勢や向きが制約を受けることがあり得る。   However, according to Patent Document 1, since the flat outer tube is twisted and folded, the flat heat receiving end portion and the flat heat radiating end portion are located on substantially the same plane. For this reason, the heat receiving end and the heat radiating end are flat in the same direction, and when the heat sink is thermally connected to the heat radiating end, the posture and orientation of the heat sink may be restricted.

それとともに、偏平な外管を立体的に捩じって折り返しているので、外管の内側に位置するウイックが変形したり潰れるのを避けられない。このため、放熱端部で液化した作動液が受熱端部に向けて戻り難くなり、効率の良い熱輸送が妨げられるといった不具合が生じてくる。   At the same time, since the flat outer tube is twisted and folded three-dimensionally, it is inevitable that the wick located inside the outer tube is deformed or crushed. For this reason, it becomes difficult for the hydraulic fluid liquefied at the heat radiating end portion to return toward the heat receiving end portion, resulting in a problem that efficient heat transport is hindered.

本発明の目的は、偏平な放熱端部に熱接続される放熱体の形状あるいは向きの自由度を高めることができ、しかも、効率の良い熱移送が可能なヒートパイプを得ることにある。   An object of the present invention is to obtain a heat pipe that can increase the degree of freedom of the shape or direction of a heat radiator that is thermally connected to a flat heat radiating end, and can efficiently transfer heat.

本発明の他の目的は、上記ヒートパイプを有する冷却装置を得ることにある。   Another object of the present invention is to obtain a cooling device having the heat pipe.

本発明のさらに他の目的は、上記冷却装置を搭載した電子機器を得ることにある。   Still another object of the present invention is to obtain an electronic apparatus equipped with the cooling device.

上記目的を達成するため、本発明の一つの形態に係るヒートパイプは、
内側にウイックを有するとともに作動液が封入された外管を備えている。この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と放熱端部とを結ぶとともに、円形の断面形状を有する中間部とを備えていることを特徴としている。 In order to achieve the above object, a heat pipe according to one embodiment of the present invention,
An outer tube having a wick on the inside and enclosing a working fluid is provided. The outer tube includes a flat heat receiving end, a flat heat radiating end in a direction different from the heat receiving end, the heat receiving end and the heat radiating end, and an intermediate portion having a circular cross-sectional shape. It is characterized by having.

上記目的を達成するため、本発明の一つの形態に係る冷却装置は、
発熱体に熱的に接続された受熱部と、上記発熱体の熱を放出する放熱部と、上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプとを具備している。上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と上記放熱端部との間を結ぶとともに、円形の断面形状を有する中間部とを備えていることを特徴としている。 In order to achieve the above object, a cooling device according to one aspect of the present invention includes:
A heat receiving part thermally connected to the heating element; a heat radiating part that releases heat of the heating element; and a heat pipe that transfers the heat of the heating element transmitted to the heat receiving part to the heat radiating part. ing. The heat pipe includes an outer tube that has a wick on the inside and encloses a hydraulic fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And an intermediate portion having a circular cross-sectional shape and connecting between the heat receiving end portion and the heat radiating end portion.

上記目的を達成するため、本発明の一つの形態に係る電子機器は、
発熱体を有する筐体と、上記筐体に収容され、上記発熱体に熱的に接続された受熱部と、上記発熱体の熱を放出する放熱部と、上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプとを具備している。上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、円形の断面形状を有して上記受熱端部と上記放熱端部との間を結ぶ中間部とを備えていることを特徴としている。 In order to achieve the above object, an electronic apparatus according to one aspect of the present invention provides:
A housing having a heating element, a heat receiving part housed in the housing and thermally connected to the heating element, a heat radiating part for releasing the heat of the heating element, and the heat generation transmitted to the heat receiving part And a heat pipe for transferring body heat to the heat radiating portion. The heat pipe includes an outer tube that has a wick on the inside and encloses a hydraulic fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And a middle portion that has a circular cross-sectional shape and connects the heat receiving end and the heat radiating end.

本発明によれば、偏平な放熱端部に熱接続される放熱体の形状や向きの自由度を高めることができる。加えて、外管の中間部は円筒形を維持するので、外管の内側のウイックの変形や潰れを防止でき、効率の良い熱移送を実現できる。   ADVANTAGE OF THE INVENTION According to this invention, the freedom degree of the shape and direction of a heat radiator thermally connected to a flat heat radiation end part can be improved. In addition, since the intermediate portion of the outer tube is maintained in a cylindrical shape, deformation and crushing of the wick inside the outer tube can be prevented, and efficient heat transfer can be realized.

以下本発明の第１の実施の形態を、図１ないし図６にもとづいて説明する。   Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

図１は、電子機器の一例であるポータブルコンピュータ１を開示している。ポータブルコンピュータ１は、コンピュータ本体２とディスプレイユニット３とを備えている。コンピュータ本体２は、偏平な箱状の筐体４を有している。筐体４は、底壁４ａ、上壁４ｂ、左右の側壁４ｃ、前壁４ｄおよび図示しない後壁を備えている。上壁４ｂはキーボード５を支持している。   FIG. 1 discloses a portable computer 1 which is an example of an electronic apparatus. The portable computer 1 includes a computer main body 2 and a display unit 3. The computer main body 2 has a flat box-shaped housing 4. The housing 4 includes a bottom wall 4a, an upper wall 4b, left and right side walls 4c, a front wall 4d, and a rear wall (not shown). The upper wall 4 b supports the keyboard 5.

ディスプレイユニット３は、偏平な箱状のディスプレイハウジング６と、このディスプレイハウジング６に収容された液晶表示パネル７とを備えている。ディスプレイハウジング６は、筐体４の後端部に図示しないヒンジを介して回動可能に支持されている。液晶表示パネル７は、画像を表示するスクリーン７ａを有している。スクリーン７ａは、ディスプレイハウジング６の前面に形成した開口部８を通じてディスプレイユニット３の外方に露出している。   The display unit 3 includes a flat box-shaped display housing 6 and a liquid crystal display panel 7 accommodated in the display housing 6. The display housing 6 is rotatably supported by a rear end portion of the housing 4 via a hinge (not shown). The liquid crystal display panel 7 has a screen 7a for displaying an image. The screen 7 a is exposed to the outside of the display unit 3 through an opening 8 formed on the front surface of the display housing 6.

図２に示すように、筐体４は、プリント配線板１０と冷却装置１１を収容している。プリント配線板１０の上面に発熱体としての電子部品１２が実装されている。電子部品１２は、例えばポータブルコンピュータ１の中枢となるCPUを構成するものである。この電子部品１２は、処理速度の高速化や多機能化に伴って動作中の発熱量が非常に大きく、安定した動作を維持するために冷却を必要としている。   As shown in FIG. 2, the housing 4 accommodates a printed wiring board 10 and a cooling device 11. An electronic component 12 as a heating element is mounted on the upper surface of the printed wiring board 10. The electronic component 12 constitutes a central CPU of the portable computer 1, for example. The electronic component 12 generates a large amount of heat during operation as the processing speed increases and the number of functions increases, and cooling is necessary to maintain a stable operation.

冷却装置１１は、電子部品１２を強制的に冷却するためのものである。この冷却装置１１は、受熱部１３、放熱部としての冷却ファン１４およびヒートパイプ１５を備えている。   The cooling device 11 is for forcibly cooling the electronic component 12. The cooling device 11 includes a heat receiving portion 13, a cooling fan 14 as a heat radiating portion, and a heat pipe 15.

受熱部１３は、電子部品１２よりも大きな板状をなしており、例えばアルミニウム合金のような熱伝導性に優れた金属材料で作られている。受熱部１３は、電子部品１２を上方から覆うようにプリント配線板１０の上に固定されている。受熱部１３の下面は、電子部品１２に熱的に接続されている。受熱部１３は、ファン支持部１６を有している。ファン支持部１６は電子部品１２から遠ざかる方向に張り出すとともに、受熱部１３と一体化されている。   The heat receiving portion 13 has a plate shape larger than that of the electronic component 12 and is made of a metal material having excellent thermal conductivity such as an aluminum alloy. The heat receiving unit 13 is fixed on the printed wiring board 10 so as to cover the electronic component 12 from above. The lower surface of the heat receiving unit 13 is thermally connected to the electronic component 12. The heat receiving part 13 has a fan support part 16. The fan support portion 16 projects in a direction away from the electronic component 12 and is integrated with the heat receiving portion 13.

冷却ファン１４は、ファンケーシング１８と、このファンケーシング１８に収容された羽根車１９とを備えている。ファンケーシング１８は、例えばアルミニウム合金のような熱伝導性に優れた金属材料で作られている。ファンケーシング１８は、ファン支持部１６と向かい合う上壁２０と、この上壁２０の周縁部から下向きに延びる周壁２１とを備えている。周壁２１の下端部は、ファン支持部１６の上面に突き合わされるとともに、このファン支持部１６に複数のねじを介して固定されている。   The cooling fan 14 includes a fan casing 18 and an impeller 19 accommodated in the fan casing 18. The fan casing 18 is made of a metal material having excellent thermal conductivity such as an aluminum alloy. The fan casing 18 includes an upper wall 20 that faces the fan support portion 16, and a peripheral wall 21 that extends downward from the peripheral edge of the upper wall 20. The lower end portion of the peripheral wall 21 is abutted against the upper surface of the fan support portion 16 and is fixed to the fan support portion 16 via a plurality of screws.

このことから、本実施形態の場合、受熱部１３とファンケーシング１８は、ファン支持部１６を介して一体化されている。そのため、電子部品１２の熱の一部は、受熱部１３からファン支持部１６を経由してファンケーシング１８に伝わるようになっている。   From this, in the case of this embodiment, the heat receiving part 13 and the fan casing 18 are integrated via the fan support part 16. Therefore, part of the heat of the electronic component 12 is transmitted from the heat receiving portion 13 to the fan casing 18 via the fan support portion 16.

ファンケーシング１８の周壁２１は、平坦な接続面２１ａを有している。接続面２１ａは、ファン支持部１６の上面から起立しており、これら接続面２１ａとファン支持部１６の上面とは、互いに直交し合うような位置関係に保たれている。   The peripheral wall 21 of the fan casing 18 has a flat connection surface 21a. The connection surface 21a stands from the upper surface of the fan support portion 16, and the connection surface 21a and the upper surface of the fan support portion 16 are maintained in a positional relationship such that they are orthogonal to each other.

羽根車１９は、フラットモータ２３を介してファンケーシング１８の上壁２０に支持されている。フラットモータ２３は、例えばポータブルコンピュータ１の電源投入時あるいは電子部品１２の温度が予め決められた値に達した時に羽根車１９を回転させる。   The impeller 19 is supported on the upper wall 20 of the fan casing 18 via a flat motor 23. The flat motor 23 rotates the impeller 19 when, for example, the portable computer 1 is turned on or when the temperature of the electronic component 12 reaches a predetermined value.

ファンケーシング１８の上壁２０およびファン支持部１６は、夫々吸込口２３ａ，２３ｂを有している。吸込口２３ａ，２３ｂは、羽根車１９の回転中心部に開口するとともに、この羽根車１９を間に挟んで向かい合っている。さらに、ファンケーシング１８の周壁２１は、吐出口２４を有している。吐出口２４は、羽根車１９の外周部と向かい合うとともに、筐体４の側壁４ｃに開けた排気口２５に連なっている。   The upper wall 20 of the fan casing 18 and the fan support part 16 have suction ports 23a and 23b, respectively. The suction ports 23a and 23b open at the rotation center of the impeller 19 and face each other with the impeller 19 therebetween. Further, the peripheral wall 21 of the fan casing 18 has a discharge port 24. The discharge port 24 faces the outer peripheral portion of the impeller 19 and continues to the exhaust port 25 opened in the side wall 4 c of the housing 4.

羽根車１９が回転すると、筐体４の内部の空気が吸込口２３ａ，２３ｂから羽根車１９の回転中心部に吸い込まれる。この空気は、遠心力によって羽根車１９の外周部から吹き出し、ファンケーシング１８やファン支持部１６を冷却するとともに、吐出口２４から排気口２５に向けて吐き出される。   When the impeller 19 rotates, the air inside the housing 4 is sucked into the rotation center of the impeller 19 from the suction ports 23a and 23b. This air is blown out from the outer peripheral portion of the impeller 19 by centrifugal force, cools the fan casing 18 and the fan support portion 16, and is discharged from the discharge port 24 toward the exhaust port 25.

上記ヒートパイプ１５は、真っ直ぐな外管３０を有している。外管３０は、例えばアルミニウム、ステンレス鋼あるいは銅のような熱伝導性に優れた金属材料で作られており、その基本の断面形状が円形となっている。図４ないし図６に示すように、外管３０の内面に多数の溝からなるウイック３１が形成されている。ウイック３１は、外管３０の軸方向に沿って延びているとともに、この外管３０の周方向に間隔を存して配置されている。さらに、外管３０の内部には、例えばアンモニア、アルコール、水等の作動液が封入されている。   The heat pipe 15 has a straight outer tube 30. The outer tube 30 is made of, for example, a metal material having excellent thermal conductivity such as aluminum, stainless steel, or copper, and its basic cross-sectional shape is circular. As shown in FIGS. 4 to 6, a wick 31 having a large number of grooves is formed on the inner surface of the outer tube 30. The wick 31 extends along the axial direction of the outer tube 30, and is arranged at intervals in the circumferential direction of the outer tube 30. Furthermore, inside the outer tube 30, for example, hydraulic fluid such as ammonia, alcohol, and water is sealed.

外管３０は、受熱端部３２、放熱端部３３および中間部３４を備えている。これら受熱端部３２、放熱端部３３および中間部３４は、外管３０の軸方向に沿って一列に並んでいる。受熱端部３２は、外管３０の一端に位置するとともに、この外管３０の軸方向に一定の長さに亘って延びている。受熱端部３２は、外管３０の一端を偏平に押し潰すことにより構成され、図４に示すように横方向に細長い中空の断面形状を有している。言い換えると、偏平な受熱端部３２は、平坦な二つの受熱面３２ａ，３２ｂと、一対の縁部３２ｃ，３２ｄを有している。受熱面３２ａ，３２ｂは、外管３０の径方向に向かい合うように互いに平行に配置されている。縁部３２ｃ，３２ｄは、受熱面３２ａ，３２ｂを間に挟んで外管３０の軸方向に延びている。   The outer tube 30 includes a heat receiving end portion 32, a heat radiating end portion 33, and an intermediate portion 34. The heat receiving end portion 32, the heat radiating end portion 33 and the intermediate portion 34 are arranged in a line along the axial direction of the outer tube 30. The heat receiving end 32 is located at one end of the outer tube 30 and extends over a certain length in the axial direction of the outer tube 30. The heat receiving end portion 32 is configured by flattening one end of the outer tube 30 and has a hollow cross-sectional shape elongated in the lateral direction as shown in FIG. 4. In other words, the flat heat receiving end 32 has two flat heat receiving surfaces 32a and 32b and a pair of edges 32c and 32d. The heat receiving surfaces 32 a and 32 b are arranged in parallel to each other so as to face the radial direction of the outer tube 30. The edges 32c and 32d extend in the axial direction of the outer tube 30 with the heat receiving surfaces 32a and 32b interposed therebetween.

放熱端部３３は、外管３０の他端に位置するとともに、この外管３０の軸方向に一定の長さに亘って延びている。放熱端部３３は、外管３０の他端を偏平に押し潰すことにより構成され、図５に示すように縦方向に細長い中空の断面形状を有している。言い換えると、偏平な放熱端部３３は、平坦な二つの放熱面３３ａ，３３ｂと、一対の縁部３３ｃ，３３ｄを有している。放熱面３３ａ，３３ｂは、外管３０の径方向に向かい合うように互いに平行に配置されている。縁部３３ｃ，３３ｄは、放熱面３３ａ，３３ｂを間に挟んで外管３０の軸方向に延びている。   The heat radiating end 33 is located at the other end of the outer tube 30 and extends over a certain length in the axial direction of the outer tube 30. The heat radiating end portion 33 is formed by flattening the other end of the outer tube 30 and has a hollow cross-sectional shape elongated in the vertical direction as shown in FIG. In other words, the flat heat radiating end portion 33 has two flat heat radiating surfaces 33a and 33b and a pair of edge portions 33c and 33d. The heat radiating surfaces 33 a and 33 b are arranged in parallel to each other so as to face the radial direction of the outer tube 30. The edge portions 33c and 33d extend in the axial direction of the outer tube 30 with the heat radiation surfaces 33a and 33b interposed therebetween.

さらに、放熱端部３３は、受熱端部３２とは異なる方向に偏平となっている。本実施形態の場合、偏平な放熱端部３３と偏平な受熱端部３２は、外管３０の周方向に例えば９０°捩じられた位置関係にあり、受熱面３２ａ，３２ｂと放熱面３３ａ，３３ｂの向きが互いに９０°異なっている。   Further, the heat radiating end 33 is flat in a direction different from that of the heat receiving end 32. In the case of the present embodiment, the flat heat radiating end 33 and the flat heat receiving end 32 are in a positional relationship twisted, for example, by 90 ° in the circumferential direction of the outer tube 30, and the heat receiving surfaces 32 a and 32 b and the heat radiating surfaces 33 a, The directions of 33b are different from each other by 90 °.

中間部３４は、受熱端部３２と放熱端部３３との間に介在されるとともに、これら受熱端部３２と放熱端部３３との間を結んでいる。図６に示すように、中間部３４は円形あるいは楕円形の断面形状を有し、外管３０の基本断面形状を保っている。したがって、本発明でいう円形とは、真円、楕円および長円のいずれも含むと定義する。   The intermediate portion 34 is interposed between the heat receiving end portion 32 and the heat radiating end portion 33 and connects between the heat receiving end portion 32 and the heat radiating end portion 33. As shown in FIG. 6, the intermediate portion 34 has a circular or elliptical cross-sectional shape, and maintains the basic cross-sectional shape of the outer tube 30. Therefore, the circle in the present invention is defined to include any of a perfect circle, an ellipse, and an ellipse.

図３に示すように、受熱端部３２と中間部３４との境界部分３５は、その断面形状が偏平形から円形に徐々に変化している。同様に放熱端部３３と中間部３４との境界部分３６は、その断面形状が偏平形から円形に徐々に変化している。   As shown in FIG. 3, the cross-sectional shape of the boundary portion 35 between the heat receiving end portion 32 and the intermediate portion 34 gradually changes from a flat shape to a circular shape. Similarly, the cross-sectional shape of the boundary portion 36 between the heat radiation end portion 33 and the intermediate portion 34 gradually changes from a flat shape to a circular shape.

ヒートパイプ１５の外管３０は、受熱部１３の上面とファンケーシング１８との間に跨るように設置されている。外管３０の受熱端部３２は、その一方の受熱面３２ａが受熱部１３の上面に半田付けされ、この受熱部１３に熱的に接続されている。受熱面３２ａは、発熱する電子部品１２に対し受熱部１３を間に挟んで向かい合っている。   The outer pipe 30 of the heat pipe 15 is installed so as to straddle between the upper surface of the heat receiving unit 13 and the fan casing 18. The heat receiving end portion 32 of the outer tube 30 has one heat receiving surface 32 a soldered to the upper surface of the heat receiving portion 13 and is thermally connected to the heat receiving portion 13. The heat receiving surface 32a faces the heat generating electronic component 12 with the heat receiving portion 13 interposed therebetween.

外管３０の放熱端部３３は、その一方の放熱面３３ａがファンケーシング１８の接続面２１ａに半田付けされ、このファンケーシング１８に熱的に接続されている。この際、ファンケーシング１８の接続面２１ａは、ファン支持部１６の上面から垂直に起立しており、接続面２１ａとファン支持部１６の上面が互いに直交し合うような位置関係に保たれている。   The heat radiating end 33 of the outer tube 30 has one heat radiating surface 33 a soldered to the connecting surface 21 a of the fan casing 18 and is thermally connected to the fan casing 18. At this time, the connection surface 21a of the fan casing 18 stands vertically from the upper surface of the fan support portion 16, and is maintained in a positional relationship such that the connection surface 21a and the upper surface of the fan support portion 16 are orthogonal to each other. .

しかるに、上記ヒートパイプ１５にあっては、偏平な受熱端部３２と偏平な放熱端部３３の向きが外管３０の周方向に９０°ずれている。したがって、ヒートパイプ１５の受熱端部３２を受熱部１３の上面に熱的に接続したままの状態で、ヒートパイプ１５の放熱端部３３をファン支持部１６の上面のファンケース１８に熱的に接続することができる。   However, in the heat pipe 15, the directions of the flat heat receiving end portion 32 and the flat heat radiating end portion 33 are shifted by 90 ° in the circumferential direction of the outer tube 30. Therefore, the heat radiating end portion 33 of the heat pipe 15 is thermally connected to the fan case 18 on the upper surface of the fan support portion 16 while the heat receiving end portion 32 of the heat pipe 15 is thermally connected to the upper surface of the heat receiving portion 13. Can be connected.

電子部品１２が発熱すると、この電子部品１２の熱が受熱部１３に伝わる。ヒートパイプ１５の受熱端部３２は、受熱部１３の上面に熱的に接続されているので、電子部品１２の熱は受熱部１３から受熱端部３２に伝わる。この熱伝導により、受熱端部３２の内部の作動液が加熱されて蒸気となる。この蒸気は、受熱端部３２から中間部３４を通じて放熱端部３３に向けて流れる。放熱端部３３に導かれた蒸気は、ここで凝縮する。凝縮により放出された熱は、放熱端部３３からファンケーシング１８への熱伝導により拡散され、このファンケーシング１８の表面から放出される。   When the electronic component 12 generates heat, the heat of the electronic component 12 is transmitted to the heat receiving unit 13. Since the heat receiving end portion 32 of the heat pipe 15 is thermally connected to the upper surface of the heat receiving portion 13, the heat of the electronic component 12 is transferred from the heat receiving portion 13 to the heat receiving end portion 32. By this heat conduction, the working fluid inside the heat receiving end portion 32 is heated to become steam. The steam flows from the heat receiving end portion 32 toward the heat radiating end portion 33 through the intermediate portion 34. The steam guided to the heat radiating end 33 is condensed here. The heat released by the condensation is diffused by heat conduction from the heat radiating end 33 to the fan casing 18 and is released from the surface of the fan casing 18.

放熱端部３３で液化された作動液は、毛細管力によりウイック３１を伝わって受熱端部３２に戻り、再び電子部品１２の熱を受ける。この作動液の蒸発・凝縮の繰り返しにより電子部品１２の熱がファンケーシング１８に移送される。   The hydraulic fluid liquefied at the heat radiating end 33 is transmitted through the wick 31 by capillary force, returns to the heat receiving end 32, and receives the heat of the electronic component 12 again. The heat of the electronic component 12 is transferred to the fan casing 18 by repeating the evaporation and condensation of the hydraulic fluid.

このような構成によれば、ヒートパイプ１５の放熱端部３３は、ヒートパイプ１５の受熱端部３２とは直交する方向に偏平となっているので、ファン支持部１６の上面から垂直に起立するファンケーシング１８の接続面２１ａに放熱端部３３を熱的に接続することができる。   According to such a configuration, the heat radiating end portion 33 of the heat pipe 15 is flat in a direction orthogonal to the heat receiving end portion 32 of the heat pipe 15, and thus stands vertically from the upper surface of the fan support portion 16. The heat radiating end 33 can be thermally connected to the connection surface 21 a of the fan casing 18.

言い換えると、ヒートパイプの受熱端部と放熱端部が同一方向に偏平な場合、この放熱端部とファンケーシング１８の接続面２１ａとが互いに直交し合うような位置関係となり、放熱端部を接続面２１ａに面接触させることができなくなる。この結果、ファンケーシング１８の形状を変化させたり、冷却ファン１４の取り付け姿勢を変更する必要が生じてくる。   In other words, when the heat receiving end portion and the heat radiating end portion of the heat pipe are flat in the same direction, the heat radiating end portion and the connection surface 21a of the fan casing 18 are positioned so as to be orthogonal to each other, and the heat radiating end portion is connected. It becomes impossible to make surface contact with the surface 21a. As a result, it becomes necessary to change the shape of the fan casing 18 or change the mounting posture of the cooling fan 14.

しかるに、上記構成によれば、ファンケーシング１８の形状や冷却ファン１４の取り付け姿勢を変化させることなく、ヒートパイプ１５の放熱端部３３をファンケーシング１８に熱的に接続することができる。このため、放熱体としてのファンケーシング１８の形状および取り付け姿勢の自由度を高めることができる。   However, according to the above configuration, the heat radiating end 33 of the heat pipe 15 can be thermally connected to the fan casing 18 without changing the shape of the fan casing 18 or the mounting posture of the cooling fan 14. For this reason, the freedom degree of the shape and attachment attitude | position of the fan casing 18 as a heat radiator can be raised.

しかも、受熱端部３２と放熱端部３３とを結ぶ中間部３４は、その断面形状が円形を維持しているので、外管３０の内面のウイック３１が変形したり潰れることはない。そのため、受熱端部３２と放熱端部３３の間での作動液の往来がスムーズとなり、電子部品１２の熱を効率良くファンケーシング１８に移送することができる。   Moreover, the intermediate portion 34 connecting the heat receiving end portion 32 and the heat radiating end portion 33 maintains a circular cross-sectional shape, so that the wick 31 on the inner surface of the outer tube 30 is not deformed or crushed. As a result, the hydraulic fluid can smoothly flow between the heat receiving end portion 32 and the heat radiating end portion 33, and the heat of the electronic component 12 can be efficiently transferred to the fan casing 18.

なお、上記第１の実施の形態では、ヒートパイプの受熱端部および放熱端部を夫々受熱部およびファンケーシングに半田付けしたが、本発明はこれに特定されるものではない。例えば受熱部およびファンケーシングに夫々嵌合溝を形成し、この嵌合溝にヒートパイプの受熱端部および放熱端部を嵌め込んで固定するようにしても良い。   In the first embodiment, the heat receiving end and the heat radiating end of the heat pipe are soldered to the heat receiving portion and the fan casing, respectively, but the present invention is not limited to this. For example, a fitting groove may be formed in each of the heat receiving portion and the fan casing, and the heat receiving end portion and the heat radiating end portion of the heat pipe may be fitted into the fitting groove and fixed.

加えて、ウイックは外管の内面に形成した溝に限らず、例えば外管の内側にガラス繊維や網状の細い線材で形成したウイック材を装着するようにしてもよい。   In addition, the wick is not limited to the groove formed on the inner surface of the outer tube, and for example, a wick material formed of glass fiber or a net-like thin wire may be mounted inside the outer tube.

さらに、本発明は上記第１の実施の形態に特定されるものではなく、図７に本発明の第２の実施の形態を示す。
この第２の実施の形態は、冷却装置４１の構成が上記第１の実施の形態と相違している。冷却装置４１は、互いに分離された受熱部４２と放熱部４３とを備えている。受熱部４２は、電子部品１２に対応する大きさの平坦な板状をなしており、例えばアルミニウム合金のような熱伝導性に優れた金属材料で作られている。この受熱部４２は、電子部品１２ととは反対側に平坦な接続面４２ａを有している。 Furthermore, the present invention is not limited to the first embodiment described above, and FIG. 7 shows a second embodiment of the present invention.
In the second embodiment, the configuration of the cooling device 41 is different from the first embodiment. The cooling device 41 includes a heat receiving portion 42 and a heat radiating portion 43 that are separated from each other. The heat receiving portion 42 has a flat plate shape having a size corresponding to the electronic component 12 and is made of a metal material having excellent thermal conductivity such as an aluminum alloy. The heat receiving portion 42 has a flat connection surface 42 a on the side opposite to the electronic component 12.

放熱部４３は、複数の放熱フィン４４と、これら放熱フィン４４を支持するフレーム４５とを備えている。放熱フィン４４は互いに間隔を存して平行に配置されており、隣り合う放熱フィン４４の間を冷却風が流通するようになっている。フレーム４５は、平坦な接続面４５ａを有し、この接続面４５ａは放熱フィン４４の並び方向に延びている。フレーム４５の接続面４５ａと受熱部４２の接続面４２ａは、互いに直交するような位置関係に保たれている。   The heat radiating portion 43 includes a plurality of heat radiating fins 44 and a frame 45 that supports the heat radiating fins 44. The radiating fins 44 are arranged in parallel with a space between each other, and cooling air flows between the adjacent radiating fins 44. The frame 45 has a flat connection surface 45 a, and the connection surface 45 a extends in the direction in which the radiating fins 44 are arranged. The connection surface 45a of the frame 45 and the connection surface 42a of the heat receiving part 42 are kept in a positional relationship such that they are orthogonal to each other.

受熱部４２と放熱部４３とは、上記第１の実施の形態と同様のヒートパイプ１５を介して熱的に接続されている。ヒートパイプ１５の受熱端部３２は、受熱部４２の接続面４２ａに半田付けされている。ヒートパイプ１５の放熱端部３３は、フレーム４５の接続面４５ａに半田付けされている。   The heat receiving part 42 and the heat radiating part 43 are thermally connected via the heat pipe 15 similar to that of the first embodiment. The heat receiving end portion 32 of the heat pipe 15 is soldered to the connection surface 42 a of the heat receiving portion 42. The heat radiating end 33 of the heat pipe 15 is soldered to the connection surface 45 a of the frame 45.

このような構成によれば、受熱部４２の接続面４２ａと放熱部４３の接続面４５ａとが互いに直交する方向を向いていても、これら両者間をヒートパイプ１５で熱的に接続することができる。   According to such a structure, even if the connection surface 42a of the heat receiving part 42 and the connection surface 45a of the heat radiating part 43 are orthogonal to each other, they can be thermally connected by the heat pipe 15. it can.

したがって、受熱部４２に伝えられた電子部品１２の熱を放熱部４３に効率良く移送することができ、放熱部４３の向きや取り付け姿勢の自由度を高めることができる。   Therefore, the heat of the electronic component 12 transmitted to the heat receiving part 42 can be efficiently transferred to the heat radiating part 43, and the degree of freedom of the direction and the mounting posture of the heat radiating part 43 can be increased.

図８は、本発明の第３の実施の形態を開示している。
この第３の実施の形態は、放熱部５１の構成が上記第２の実施の形態と相違しており、それ以外の冷却装置４１の構成は第２の実施の形態と同様である。 FIG. 8 discloses a third embodiment of the present invention.
In the third embodiment, the configuration of the heat dissipating part 51 is different from that of the second embodiment, and the other configurations of the cooling device 41 are the same as those of the second embodiment.

図８に示すように、放熱部５１は、受熱部４２と略同じ大きさの板状をなしており、例えばアルミニウム合金のような熱伝導性に優れた金属材料で作られている。放熱部５１は、平坦な接続面５１ａを有している。放熱部５１の接続面５１ａと受熱部４２の接続面４２ａは、互いに直交するような位置関係に保たれており、この接続面５１ａにヒートパイプ１５の放熱端部３３が半田付けされている。   As shown in FIG. 8, the heat radiating portion 51 has a plate shape that is substantially the same size as the heat receiving portion 42, and is made of a metal material having excellent thermal conductivity, such as an aluminum alloy. The heat dissipation part 51 has a flat connection surface 51a. The connection surface 51a of the heat radiating portion 51 and the connection surface 42a of the heat receiving portion 42 are maintained in a positional relationship such that they are orthogonal to each other, and the heat radiating end portion 33 of the heat pipe 15 is soldered to the connection surface 51a.

図９は、本発明の第４の実施の形態を開示している。
この第４の実施の形態は、上記第２の実施の形態を発展させたものであり、冷却装置４１の基本的な構成は第２の実施の形態と同様である。 FIG. 9 discloses a fourth embodiment of the present invention.
The fourth embodiment is an extension of the second embodiment, and the basic configuration of the cooling device 41 is the same as that of the second embodiment.

図９に示すように、ヒートパイプ１５は、その外管３０の中間部３４に例えば円弧状に９０°湾曲された曲げ部６１を有している。この曲げ部６１の存在により、ヒートパイプ１５の受熱端部３２と放熱端部３３は、互いに直交する方向に沿って延びており、熱の移送方向が直角に折れ曲がっている。このため、ヒートパイプ１５の受熱端部３２を通る軸線O1と、ヒートパイプ１５の放熱端部３３を通る軸線O2は、曲げ部６１に対応する位置で直角に交わっている。   As shown in FIG. 9, the heat pipe 15 has a bent portion 61 that is bent, for example, by 90 ° in an arc shape in the intermediate portion 34 of the outer tube 30. Due to the presence of the bent portion 61, the heat receiving end portion 32 and the heat radiating end portion 33 of the heat pipe 15 extend along directions orthogonal to each other, and the heat transfer direction is bent at a right angle. For this reason, the axis O 1 passing through the heat receiving end 32 of the heat pipe 15 and the axis O 2 passing through the heat radiating end 33 of the heat pipe 15 intersect at a right angle at a position corresponding to the bent portion 61.

さらに、本実施の形態では、外管３０の受熱端部３２と放熱端部３３が外管３０の周方向に例えば４５°捩じられており、受熱面３２ａと放熱面３３ａの向きが互いに異なっている。   Further, in the present embodiment, the heat receiving end portion 32 and the heat radiating end portion 33 of the outer tube 30 are twisted, for example, by 45 ° in the circumferential direction of the outer tube 30, and the directions of the heat receiving surface 32a and the heat radiating surface 33a are different from each other. ing.

冷却装置４１の放熱部４３は、複数の放熱フィン６２と、これら放熱フィン６２を支持するフレーム６３とを備えている。放熱フィン６２は、平坦な板状をなしている。これら放熱フィン６２は、互いに間隔を存して平行に配置されているとともに、鉛直方向に沿って起立している。フレーム６３は、放熱フィン６２の並び方向に延びる接続面６３ａを有している。この接続面６３ａは、放熱フィン６２の起立方向に対し略４５°傾斜している。接続面６３ａの傾斜角度は、ヒートパイプ１５の受熱端部３２に対する放熱端部３３の捩じれ角度に対応している。そして、ヒートパイプ１５の放熱端部３３は、フレーム６３の熱接続面６３ａに半田付けされている。   The heat radiation part 43 of the cooling device 41 includes a plurality of heat radiation fins 62 and a frame 63 that supports the heat radiation fins 62. The radiating fins 62 have a flat plate shape. These heat radiating fins 62 are arranged parallel to each other with a space therebetween, and are erected along the vertical direction. The frame 63 has a connection surface 63 a extending in the direction in which the heat radiating fins 62 are arranged. The connection surface 63 a is inclined by approximately 45 ° with respect to the rising direction of the heat dissipating fins 62. The inclination angle of the connection surface 63 a corresponds to the twist angle of the heat radiating end portion 33 with respect to the heat receiving end portion 32 of the heat pipe 15. The heat radiating end portion 33 of the heat pipe 15 is soldered to the heat connection surface 63 a of the frame 63.

このような構成によると、ヒートパイプ１５の外管３０は、円形の断面形状を維持する中間部３４の位置で円弧状に曲げられている。このため、偏平な外管を円弧状に曲げる場合との比較において、曲げ部６１の曲げ半径を小さくすることができ、受熱端部３２と放熱端部３３とが互いに近づく。よって、冷却装置４１がコンパクトとなり、この冷却装置４１の実装スペースを削減することができる。   According to such a configuration, the outer tube 30 of the heat pipe 15 is bent in an arc shape at the position of the intermediate portion 34 that maintains a circular cross-sectional shape. For this reason, in comparison with the case where a flat outer tube is bent in an arc shape, the bending radius of the bending portion 61 can be reduced, and the heat receiving end portion 32 and the heat radiating end portion 33 come closer to each other. Therefore, the cooling device 41 becomes compact, and the mounting space for the cooling device 41 can be reduced.

それとともに、ヒートパイプ１５の曲げ部６１は、円形の断面形状を有する中間部３４に位置するので、外管３０の内面のウイック３１が変形したり潰れ難くなる。このため、受熱部４２から放熱部４３への熱の移送を効率良く行うことができる。   At the same time, since the bent portion 61 of the heat pipe 15 is located in the intermediate portion 34 having a circular cross-sectional shape, the wick 31 on the inner surface of the outer tube 30 is not easily deformed or crushed. For this reason, the heat can be efficiently transferred from the heat receiving portion 42 to the heat radiating portion 43.

図１０は、本発明の第５の実施の形態を開示している。
この第５の実施の形態は、上記第３の実施の形態をさらに発展させたものであり、冷却装置４１の基本的な構成は第３の実施の形態と同様である。 FIG. 10 discloses a fifth embodiment of the present invention.
The fifth embodiment is a further development of the third embodiment, and the basic configuration of the cooling device 41 is the same as that of the third embodiment.

図１０に示すように、ヒートパイプ１５は、その外管３０の中間部３４にクランク状に折れ曲がった段差部７１を有している。この段差部７１の存在により、ヒートパイプ１５の受熱端部３２と放熱端部３３が互いに段がつくようにずれている。   As shown in FIG. 10, the heat pipe 15 has a stepped portion 71 bent in a crank shape at the intermediate portion 34 of the outer tube 30. Due to the presence of the stepped portion 71, the heat receiving end portion 32 and the heat radiating end portion 33 of the heat pipe 15 are displaced from each other so as to be stepped.

このような構成によると、ヒートパイプ１５の外管３０は、円形の断面形状を維持する中間部３４の位置でクランク状に折れ曲がっている。このため、偏平な外管を折り曲げる場合との比較において、外管３０の内面のウイック３１が変形したり潰れ難くなる。このため、受熱部４２から放熱部４３への熱の移送を効率良く行うことができる。   According to such a configuration, the outer tube 30 of the heat pipe 15 is bent in a crank shape at the position of the intermediate portion 34 that maintains a circular cross-sectional shape. For this reason, compared with the case where a flat outer tube is bent, the wick 31 on the inner surface of the outer tube 30 is not easily deformed or crushed. For this reason, the heat can be efficiently transferred from the heat receiving portion 42 to the heat radiating portion 43.

図１１は、本発明の第６の実施の形態を開示している。
この第６の実施の形態は、上記第４の実施の形態を発展させたものであり、冷却装置４１の基本的な構成は第４の実施の形態と同様である。 FIG. 11 discloses a sixth embodiment of the present invention.
The sixth embodiment is an extension of the fourth embodiment, and the basic configuration of the cooling device 41 is the same as that of the fourth embodiment.

図１１に示すように、ヒートパイプ１５は、その外管３０の中間部３４にクランク状に折れ曲がった段差部８１を有している。段差部８１は、曲げ部６１と隣り合っており、この段差部８１の存在により、ヒートパイプ１５の受熱端部３２と放熱端部３３が互いに段がつくようにずれている。したがって、本実施形態のヒートパイプ１５は、三次元的な形状に折れ曲がっている。   As shown in FIG. 11, the heat pipe 15 has a stepped portion 81 bent in a crank shape at the intermediate portion 34 of the outer tube 30. The step portion 81 is adjacent to the bent portion 61, and due to the presence of the step portion 81, the heat receiving end portion 32 and the heat radiating end portion 33 of the heat pipe 15 are displaced from each other so as to be stepped. Therefore, the heat pipe 15 of this embodiment is bent into a three-dimensional shape.

さらに、図１２および図１３は、本発明の第７の実施の形態を開示している。
この第７の実施の形態は、ヒートパイプ１５の形状が上記第１の実施の形態と相違しており、それ以外の冷却装置１１の基本的な構成は第１の実施の形態と同様である。 Furthermore, FIGS. 12 and 13 disclose a seventh embodiment of the present invention.
In the seventh embodiment, the shape of the heat pipe 15 is different from that of the first embodiment, and the other basic configuration of the cooling device 11 is the same as that of the first embodiment. .

ヒートパイプ１５は、受熱端部３２と放熱端部３３との間を結ぶ中間部９１を有している。受熱端部３２および放熱端部３３は、外管３０の周方向に９０°捩じられた位置関係にあり、受熱面３２ａ，３２ｂと放熱面３３ａ，３３ｂの向きが９０°異なっている。この点は上記第１の実施の形態と同様である。   The heat pipe 15 has an intermediate portion 91 connecting the heat receiving end portion 32 and the heat radiating end portion 33. The heat receiving end portion 32 and the heat radiating end portion 33 are in a positional relationship twisted by 90 ° in the circumferential direction of the outer tube 30, and the directions of the heat receiving surfaces 32a and 32b and the heat radiating surfaces 33a and 33b are different by 90 °. This point is the same as in the first embodiment.

図１３に示すように、ヒートパイプ１５の中間部９１は、一対の第１の面９２ａ，９２ｂと一対の第２の面９３ａ，９３ｂを有する角筒状をなしている。一方の第１の面９２ａは、受熱端部３２の一方の受熱面３２ａと放熱端部３３の一方の縁部３３ｃとの間を結んでいる。このことから、放熱端部３３の一方の縁部３３ｃは、第１の面９２ａを介して一方の受熱面３２ａに連なっている。   As shown in FIG. 13, the intermediate portion 91 of the heat pipe 15 has a rectangular tube shape having a pair of first surfaces 92a and 92b and a pair of second surfaces 93a and 93b. One first surface 92 a connects between one heat receiving surface 32 a of the heat receiving end portion 32 and one edge portion 33 c of the heat radiating end portion 33. For this reason, one edge 33c of the heat radiating end 33 is connected to one heat receiving surface 32a via the first surface 92a.

他方の第１の面９２ｂは、受熱端部３２の他方の受熱面３２ｂと放熱端部３３の他方の縁部３３ｄとの間を結んでいる。この第１の面９２ｂは、第１の面９２ａと向かい合うとともに、これら二つの第１の面９２ａ，９２ｂは、受熱端部３２から放熱端部３３の方向に進むに従い互いに遠ざかる方向に傾斜している。よって、第１の面９２ａ，９２ｂは互いに非平行をなすとともに、受熱端部３２の受熱面３２ａ，３２ｂに連続している。   The other first surface 92 b connects between the other heat receiving surface 32 b of the heat receiving end portion 32 and the other edge portion 33 d of the heat radiating end portion 33. The first surface 92b faces the first surface 92a, and the two first surfaces 92a and 92b are inclined so as to move away from each other as they proceed from the heat receiving end portion 32 toward the heat radiating end portion 33. Yes. Therefore, the first surfaces 92 a and 92 b are not parallel to each other and are continuous with the heat receiving surfaces 32 a and 32 b of the heat receiving end portion 32.

一方の第２の面９３ａは、放熱端部３３の一方の放熱面３３ａと受熱端部３２の一方の縁部３２ｃとの間を結んでいる。言い換えると、受熱端部３２の一方の縁部３２ｃは、第２の面９３ａを介して一方の放熱面３３ａに連なっている。   One second surface 93 a connects between one heat radiating surface 33 a of the heat radiating end 33 and one edge 32 c of the heat receiving end 32. In other words, one edge portion 32c of the heat receiving end portion 32 is continuous with the one heat radiating surface 33a via the second surface 93a.

他方の第２の面９３ｂは、放熱端部３３の他方の放熱面３３ｂと受熱端部３２の他方の縁部３２ｄとの間を結んでいる。このことから、受熱端部３２の他方の縁部３２ｄは、第２の面９３ｂを介して他方の放熱面３３ｂに連なっている。   The other second surface 93 b connects the other heat radiating surface 33 b of the heat radiating end portion 33 and the other edge portion 32 d of the heat receiving end portion 32. For this reason, the other edge 32d of the heat receiving end 32 is connected to the other heat radiating surface 33b via the second surface 93b.

さらに、一方の第２の面９３ａは、他方の第２の面９３ｂと向かい合うとともに、これら二つの第２の面９３ａ，９３ｂは、受熱端部３２から放熱端部３３の方向に進むに従い互いに近づく方向に傾斜している。よって、第２の面９３ａ，９３ｂは互いに非平行をなすとともに、放熱端部３３の放熱面３３ａ，３３ｂに連続している。   Furthermore, one second surface 93a faces the other second surface 93b, and these two second surfaces 93a and 93b approach each other as they proceed from the heat receiving end 32 toward the heat radiating end 33. Inclined in the direction. Therefore, the second surfaces 93 a and 93 b are not parallel to each other and are continuous with the heat radiation surfaces 33 a and 33 b of the heat radiation end portion 33.

このような構成によると、受熱端部３２と放熱端部３３との間を結ぶ中間部９１は、互いに非平行な第１の面９２ａ，９２ｂおよび第２の面９３ａ，９３ｂを有する角筒状をなしている。そのため、中間部３４の内面のウイック３１が変形したり潰れ難くなり、受熱端部３２および放熱端部３３の偏平の向きを異ならせたにも拘わらず、受熱部４２から放熱部４３への熱の移送を効率良く行うことができる。   According to such a configuration, the intermediate portion 91 connecting the heat receiving end portion 32 and the heat radiating end portion 33 has a rectangular tube shape having first surfaces 92a and 92b and second surfaces 93a and 93b that are non-parallel to each other. I am doing. Therefore, the wick 31 on the inner surface of the intermediate portion 34 is not easily deformed or crushed, and the heat from the heat receiving portion 42 to the heat radiating portion 43 is changed in spite of the fact that the heat receiving end portion 32 and the heat radiating end portion 33 have different flat directions. Can be efficiently transferred.

図１４は、本発明の第８の実施の形態を開示している。
この第８の実施の形態は、ヒートパイプ１５の中間部９１の形状が上記第７の実施の形態と相違しており、それ以外の構成は第７の実施の形態と同様である。 FIG. 14 discloses an eighth embodiment of the present invention.
In the eighth embodiment, the shape of the intermediate portion 91 of the heat pipe 15 is different from that of the seventh embodiment, and other configurations are the same as those of the seventh embodiment.

図１４に示すように、中間部９１の一方の第１の面９２ａは、受熱端部３２の一方の受熱面３２ａから放熱端部３３の一方の縁部３３ｃと同一平面上に位置している。他方の第２の面９２ｂは、受熱端部３２から放熱端部３３の方向に進むに従い第１の面９２ａから遠ざかる方向に傾斜している。   As shown in FIG. 14, one first surface 92 a of the intermediate portion 91 is located on the same plane as one edge portion 33 c of the heat radiating end portion 33 from one heat receiving surface 32 a of the heat receiving end portion 32. . The other second surface 92 b is inclined in a direction away from the first surface 92 a as it proceeds from the heat receiving end portion 32 toward the heat radiating end portion 33.

中間部９１の他方の第２の面９３ｂは、放熱端部３３の他方の放熱面３３ｂおよび受熱端部３２の他方の縁部３２ｄと同一平面上に位置している。中間部９１の一方の第２の面９３ａは、受熱端部３２から放熱端部３３の方向に進むに従い第２の面９３ｂに近づく方向に傾斜している。   The other second surface 93 b of the intermediate portion 91 is located on the same plane as the other heat radiating surface 33 b of the heat radiating end portion 33 and the other edge portion 32 d of the heat receiving end portion 32. One second surface 93a of the intermediate portion 91 is inclined in a direction approaching the second surface 93b as it proceeds from the heat receiving end portion 32 toward the heat radiating end portion 33.

本発明の第１の実施の形態に係るポータブルコンピュータの斜視図。1 is a perspective view of a portable computer according to a first embodiment of the present invention. 本発明の第１の実施の形態において、筐体の内部に冷却装置を収容した状態を示すポータブルコンピュータの斜視図。The perspective view of the portable computer which shows the state which accommodated the cooling device in the inside of the housing | casing in the 1st Embodiment of this invention. 本発明の第１の実施の形態に係る冷却装置の斜視図。The perspective view of the cooling device which concerns on the 1st Embodiment of this invention. 本発明の第１の実施の形態において、外管の受熱端部の断面形状を示すヒートパイプの断面図。FIG. 3 is a cross-sectional view of the heat pipe showing the cross-sectional shape of the heat receiving end portion of the outer tube in the first embodiment of the present invention. 本発明の第１の実施の形態において、外管の放熱端部の断面形状を示すヒートパイプの断面図。FIG. 3 is a cross-sectional view of the heat pipe showing the cross-sectional shape of the heat radiating end of the outer tube in the first embodiment of the present invention. 本発明の第１の実施の形態において、外管の中間部の断面形状を示すヒートパイプの断面図。FIG. 3 is a cross-sectional view of the heat pipe showing a cross-sectional shape of an intermediate portion of the outer pipe in the first embodiment of the present invention. 本発明の第２の実施の形態に係る冷却装置の斜視図。The perspective view of the cooling device which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施の形態に係る冷却装置の斜視図。The perspective view of the cooling device which concerns on the 3rd Embodiment of this invention. 本発明の第４の実施の形態に係る冷却装置の斜視図。The perspective view of the cooling device which concerns on the 4th Embodiment of this invention. 本発明の第５の実施の形態に係る冷却装置の斜視図。The perspective view of the cooling device which concerns on the 5th Embodiment of this invention. 本発明の第６の実施の形態に係る冷却装置の斜視図。The perspective view of the cooling device which concerns on the 6th Embodiment of this invention. 本発明の第７の実施の形態において、筐体の内部に冷却装置を収容した状態を示すポータブルコンピュータの斜視図。The perspective view of the portable computer which shows the state which accommodated the cooling device in the inside of the housing | casing in the 7th Embodiment of this invention. (Ａ)は、本発明の第７の実施の形態に用いるヒートパイプの側面図。(Ｂ)は、図１３(Ａ)の矢印Ｘ方向から見たヒートパイプの側面図。(A) is a side view of the heat pipe used for the 7th Embodiment of this invention. FIG. 13B is a side view of the heat pipe as viewed from the direction of the arrow X in FIG. (Ａ)は、本発明の第８の実施の形態に用いるヒートパイプの側面図。(Ｂ)は、図１４(Ａ)の矢印Ｙ方向から見たヒートパイプの側面図。(A) is a side view of the heat pipe used for the 8th Embodiment of this invention. FIG. 14B is a side view of the heat pipe as viewed from the direction of the arrow Y in FIG.

符号の説明Explanation of symbols

４…筐体、１２…発熱体（電子部品）、１３，４２…受熱部、１４，４３，５１…放熱部（冷却ファン）、１５…ヒートパイプ、３０…外管、３１…ウイック、３２…受熱端部、３２ａ，３２ｂ…受熱面、３３…放熱端部、３３ａ，３３ｂ…放熱面、３４，９１…中間部、４１…冷却装置、９２ａ，９２ｂ…第１の面、９３ａ，９３ｂ…第２の面。   DESCRIPTION OF SYMBOLS 4 ... Housing | casing, 12 ... Heat generating body (electronic component), 13, 42 ... Heat receiving part, 14, 43, 51 ... Radiating part (cooling fan), 15 ... Heat pipe, 30 ... Outer pipe, 31 ... Wick, 32 ... Heat receiving end, 32a, 32b ... heat receiving surface, 33 ... heat radiating end, 33a, 33b ... heat radiating surface, 34, 91 ... intermediate portion, 41 ... cooling device, 92a, 92b ... first surface, 93a, 93b ... first 2 side.

Claims (26)

外管の内側にウイックを設けるとともに、この外管の内部に作動液を封入したヒートパイプであって、
上記外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と上記放熱端部とを結ぶとともに円形の断面形状を有する中間部と、を具備したことを特徴とするヒートパイプ。 A heat pipe in which a wick is provided inside the outer pipe and a working fluid is sealed inside the outer pipe,
The outer tube includes a flat heat receiving end portion, a heat radiating end portion flat in a direction different from the heat receiving end portion, an intermediate portion having a circular cross-sectional shape and connecting the heat receiving end portion and the heat radiating end portion. The heat pipe characterized by comprising. 請求項１の記載において、上記外管は、上記中間部の位置で円弧状に曲げられていることを特徴とするヒートパイプ。   2. The heat pipe according to claim 1, wherein the outer tube is bent in an arc shape at the position of the intermediate portion. 請求項１の記載において、上記外管は、上記中間部の位置でクランク状に折れ曲がっていることを特徴とするヒートパイプ。   The heat pipe according to claim 1, wherein the outer tube is bent in a crank shape at the position of the intermediate portion. 請求項１の記載において、上記外管の中間部は、円弧状に湾曲する曲げ部と、クランク状に折れ曲がる段差部とを有することを特徴とするヒートパイプ。   2. The heat pipe according to claim 1, wherein the intermediate portion of the outer tube has a bent portion that is curved in an arc shape and a step portion that is bent in a crank shape. 請求項１ないし請求項３のいずれかの記載において、上記外管の受熱端部は、互いに平行な二つの受熱面を有するとともに、上記外管の放熱端部は、互いに平行な二つの放熱面を有し、上記受熱面および上記放熱面の向きは、上記外管の周方向に互いに異なることを特徴とするヒートパイプ。   4. The heat receiving end of the outer tube according to claim 1, wherein the heat receiving end portion of the outer tube has two heat receiving surfaces parallel to each other, and the heat radiating end portion of the outer tube has two heat radiating surfaces parallel to each other. The heat pipe is characterized in that the directions of the heat receiving surface and the heat radiating surface are different from each other in the circumferential direction of the outer tube. 外管の内側にウイックを設けるとともに、この外管の内部に作動液を封入したヒートパイプであって、
上記外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、円形の断面形状を有して上記受熱端部と上記放熱端部との間を結ぶとともに、円弧状に湾曲する中間部と、を具備したことを特徴とするヒートパイプ。 A heat pipe in which a wick is provided inside the outer pipe and a working fluid is sealed inside the outer pipe,
The outer tube has a flat heat receiving end, a heat radiating end flat in a direction different from the heat receiving end, and a circular cross-sectional shape that connects the heat receiving end and the heat radiating end. And the heat pipe characterized by comprising the intermediate part curved in circular arc shape. 請求項６の記載において、上記受熱端部と上記放熱端部は、上記中間部を間に挟んで互いに異なる方向に延びていることを特徴とするヒートパイプ。   7. The heat pipe according to claim 6, wherein the heat receiving end portion and the heat radiating end portion extend in different directions with the intermediate portion interposed therebetween. 外管の内側にウイックを設けるとともに、この外管の内部に作動液を封入したヒートパイプであって、
上記外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と上記放熱端部との間を結ぶ中間部とを有し、これら受熱端部、放熱端部および中間部は一列に並んでいるとともに、
上記受熱端部および上記放熱端部は、夫々互いに平行な二つの面を有し、上記中間部は、上記受熱端部の二つの面に連続する互いに非平行な二つの第１の面と、上記放熱端部の二つの面に連続する互いに非平行な二つの第２の面とを有することを特徴とするヒートパイプ。 A heat pipe in which a wick is provided inside the outer pipe and a working fluid is sealed inside the outer pipe,
The outer tube has a flat heat receiving end, a heat radiating end flat in a direction different from the heat receiving end, and an intermediate portion connecting the heat receiving end and the heat radiating end. While the heat receiving end, the heat radiating end and the middle are aligned in a row,
The heat receiving end and the heat radiating end each have two surfaces parallel to each other, and the intermediate portion includes two non-parallel first surfaces continuous to the two surfaces of the heat receiving end, A heat pipe having two non-parallel second surfaces that are continuous with the two surfaces of the heat radiating end. 請求項８の記載において、上記受熱端部および上記放熱端部は、夫々上記外管の軸方向に延びる一対の縁部を有し、上記受熱端部の縁部は、上記中間部の第２の面を介して上記放熱端部の二つの面に連なるとともに、上記放熱端部の縁部は、上記中間部の第１の面を介して上記受熱端部の二つの面に連なることを特徴とするヒートパイプ。   The heat receiving end portion and the heat radiating end portion each have a pair of edges extending in the axial direction of the outer tube, and the edge of the heat receiving end is a second portion of the intermediate portion. And the edge of the heat dissipating end is connected to the two surfaces of the heat receiving end via the first surface of the intermediate part. Heat pipe. 発熱体に熱的に接続された受熱部と、
上記発熱体の熱を放出する放熱部と、
上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプと、を具備し、
上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と上記放熱端部との間を結ぶとともに、円形の断面形状を有する中間部と、を備えていることを特徴とする冷却装置。 A heat receiving portion thermally connected to the heating element;
A heat radiating part for releasing the heat of the heating element;
A heat pipe that transfers the heat of the heating element transmitted to the heat receiving portion to the heat radiating portion,
The heat pipe includes an outer tube that has a wick on the inside and encloses a working fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And a middle part having a circular cross-sectional shape and connecting between the heat receiving end and the heat radiating end. 発熱体に熱的に接続された受熱部と、
上記発熱体の熱を放出する放熱部と、
上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプと、を具備し、
上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、円形の断面形状を有して上記受熱端部と上記放熱端部との間を結ぶとともに、円弧状に湾曲する中間部と、を備えていることを特徴とする冷却装置。 A heat receiving portion thermally connected to the heating element;
A heat radiating part for releasing the heat of the heating element;
A heat pipe that transfers the heat of the heating element transmitted to the heat receiving portion to the heat radiating portion,
The heat pipe includes an outer tube that has a wick on the inside and encloses a hydraulic fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And a middle part that has a circular cross-sectional shape and connects the heat receiving end and the heat radiating end and is curved in an arc shape. 請求項１０又は請求項１１の記載において、上記受熱部は、上記放熱部を支持する支持部を有し、この支持部を介して上記受熱部と上記放熱部とが一体化されていることを特徴とする冷却装置。   In Claim 10 or Claim 11, the said heat receiving part has a support part which supports the said heat radiating part, The said heat receiving part and the said heat radiating part are integrated via this support part. A cooling device characterized. 請求項１０又は請求項１１の記載において、上記放熱部は、羽根車を収容するファンケーシングを備え、このファンケーシングに上記ヒートパイプの放熱端部が熱的に接続されていることを特徴とする冷却装置。   The heat radiating section may include a fan casing that houses an impeller, and the heat radiating end of the heat pipe may be thermally connected to the fan casing. Cooling system. 請求項１３の記載において、上記ファンケーシングは、上記受熱部と交差する方向に延びる周壁を有し、この周壁に上記ヒートパイプの放熱端部が熱的に接続されていることを特徴とする冷却装置。   14. The cooling according to claim 13, wherein the fan casing has a peripheral wall extending in a direction crossing the heat receiving portion, and a heat radiating end portion of the heat pipe is thermally connected to the peripheral wall. apparatus. 請求項１０又は請求項１１の記載において、上記外管の受熱端部は、互いに平行な二つの受熱面を有するとともに、上記外管の放熱端部は、互いに平行な二つの放熱面を有し、上記受熱面および上記放熱面の向きは、上記外管の周方向に互いに異なることを特徴とする冷却装置。   The heat receiving end portion of the outer tube has two heat receiving surfaces parallel to each other, and the heat radiating end portion of the outer tube has two heat radiating surfaces parallel to each other. The cooling device according to claim 1, wherein directions of the heat receiving surface and the heat radiating surface are different from each other in a circumferential direction of the outer tube. 請求項１０の記載において、上記ヒートパイプの外管は、上記中間部の位置で円弧状に曲げられていることを特徴とする冷却装置。   11. The cooling device according to claim 10, wherein the outer pipe of the heat pipe is bent in an arc shape at the position of the intermediate portion. 請求項１０の記載において、上記ヒートパイプの外管は、上記中間部の位置でクランク状に折れ曲がっていることを特徴とする冷却装置。   The cooling device according to claim 10, wherein the outer pipe of the heat pipe is bent in a crank shape at the position of the intermediate portion. 請求項１０の記載において、上記外管の中間部は、円弧状に湾曲する曲げ部と、クランク状の折れ曲がる段差部とを有することを特徴とする冷却装置。   11. The cooling device according to claim 10, wherein the intermediate portion of the outer tube has a bent portion that is curved in an arc shape and a step portion that is bent in a crank shape. 請求項１１の記載において、上記受熱端部と上記放熱端部は、上記中間部を間に挟んで互いに異なる方向に延びていることを特徴とする冷却装置。   12. The cooling device according to claim 11, wherein the heat receiving end portion and the heat radiating end portion extend in different directions with the intermediate portion interposed therebetween. 請求項１０又は請求項１１の記載において、上記放熱部は、互いに間隔を存して並べられた複数の放熱フィンを有し、これら放熱フィンに上記ヒートパイプの放熱端部が熱的に接続されていることを特徴とする冷却装置。   In Claim 10 or Claim 11, the said heat radiating part has a plurality of heat radiating fins arranged at intervals, and the heat radiating end of the heat pipe is thermally connected to these heat radiating fins. A cooling device characterized by that. 発熱体に熱的に接続された受熱部と、
上記発熱体の熱を放出する放熱部と、
上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプと、を具備し、
上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と上記放熱端部との間を結ぶ中間部とを有し、これら受熱端部、放熱端部および中間部は一列に並んでいるとともに、
上記受熱端部および上記放熱端部は、夫々互いに平行な二つの面を有し、上記中間部は、上記受熱端部の二つの面に連続する互いに非平行な二つの第１の面と、上記放熱端部の二つの面に連続する互いに非平行な二つの第２の面とを有することを特徴とする冷却装置。 A heat receiving portion thermally connected to the heating element;
A heat radiating part for releasing the heat of the heating element;
A heat pipe that transfers the heat of the heating element transmitted to the heat receiving portion to the heat radiating portion,
The heat pipe includes an outer tube that has a wick on the inside and encloses a hydraulic fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And an intermediate portion connecting between the heat receiving end portion and the heat radiating end portion, and the heat receiving end portion, the heat radiating end portion and the intermediate portion are arranged in a line,
The heat receiving end and the heat radiating end each have two surfaces parallel to each other, and the intermediate portion includes two non-parallel first surfaces continuous to the two surfaces of the heat receiving end, A cooling device comprising two non-parallel second surfaces that are continuous with the two surfaces of the heat radiating end. 請求項２１の記載において、上記受熱端部および上記放熱端部は、夫々上記外管の軸方向に延びる一対の縁部を有し、上記受熱端部の縁部は、上記中間部の第２の面を介して上記放熱端部の二つの面に連なるとともに、上記放熱端部の縁部は、上記中間部の第１の面を介して上記受熱端部の二つの面に連なることを特徴とする冷却装置。   The heat receiving end portion and the heat radiating end portion each have a pair of edges extending in the axial direction of the outer tube, and the edge of the heat receiving end is a second of the intermediate portion. And the edge of the heat dissipating end is connected to the two surfaces of the heat receiving end via the first surface of the intermediate part. And cooling device. 発熱体を有する筐体と、
上記筐体に収容され、上記発熱体に熱的に接続された受熱部と、
上記発熱体の熱を放出する放熱部と、
上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプと、を具備し、
上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、円形の断面形状を有して上記受熱端部と上記放熱端部との間を結ぶ中間部と、を備えていることを特徴とする電子機器。 A housing having a heating element;
A heat receiving portion housed in the housing and thermally connected to the heating element;
A heat radiating part for releasing the heat of the heating element;
A heat pipe that transfers the heat of the heating element transmitted to the heat receiving portion to the heat radiating portion,
The heat pipe includes an outer tube that has a wick on the inside and encloses a hydraulic fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And an intermediate portion connecting the heat receiving end and the heat radiating end with a circular cross-sectional shape. 請求項２３の記載において、上記ヒートパイプの外管は、上記中間部の位置で円弧状に曲げられていることを特徴とする電子機器。   24. The electronic device according to claim 23, wherein the outer pipe of the heat pipe is bent in an arc shape at the position of the intermediate portion. 請求項２３又は請求項２４の記載において、上記筐体は排気口を有し、また、上記放熱部は、吐出口を有するとともに上記ヒートパイプの放熱端部が熱的に接続されたファンケーシングを有し、このファンケーシングは上記吐出口を上記排気口に向けた姿勢で上記筐体に収容されていることを特徴とする電子機器。   25. The fan casing according to claim 23 or claim 24, wherein the housing has an exhaust port, and the heat radiating portion has a discharge port and a heat radiating end portion of the heat pipe is thermally connected. And the fan casing is housed in the casing in a posture in which the discharge port faces the exhaust port. 発熱体を有する筐体と、
上記筐体に収容され、上記発熱体に熱的に接続された受熱部と、
上記発熱体の熱を放出する放熱部と、
上記受熱部に伝えられた上記発熱体の熱を上記放熱部に移送するヒートパイプと、を具備し、
上記ヒートパイプは、内側にウイックを有するとともに熱移送用の作動液を封入した外管を含み、この外管は、偏平な受熱端部と、この受熱端部とは異なる方向に偏平な放熱端部と、上記受熱端部と上記放熱端部との間を結ぶ中間部とを有し、これら受熱端部、放熱端部および中間部は一列に並んでいるとともに、
上記受熱端部および上記放熱端部は、夫々互いに平行な二つの面を有し、上記中間部は、上記受熱端部の二つの面に連続する互いに非平行な二つの第１の面と、上記放熱端部の二つの面に連続する互いに非平行な二つの第２の面とを有することを特徴とする電子機器。 A housing having a heating element;
A heat receiving portion housed in the housing and thermally connected to the heating element;
A heat radiating part for releasing the heat of the heating element;
A heat pipe that transfers the heat of the heating element transmitted to the heat receiving portion to the heat radiating portion,
The heat pipe includes an outer tube that has a wick on the inside and encloses a hydraulic fluid for heat transfer. The outer tube has a flat heat receiving end and a flat heat radiating end in a direction different from the heat receiving end. And an intermediate portion connecting between the heat receiving end portion and the heat radiating end portion, and the heat receiving end portion, the heat radiating end portion and the intermediate portion are arranged in a line,
The heat receiving end and the heat radiating end each have two surfaces parallel to each other, and the intermediate portion includes two non-parallel first surfaces continuous to the two surfaces of the heat receiving end, An electronic apparatus comprising two non-parallel second surfaces that are continuous with the two surfaces of the heat radiating end.
JP2003307423A 2003-08-29 2003-08-29 Heat pipe, cooling device having heat pipe, and electronic device equipped with cooling device Pending JP2005079325A (en)

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US10/847,246 US20050045310A1 (en) 2003-08-29 2004-05-17 Heat pipe, cooling unit having the heat pipe, and electronic apparatus having the cooling unit
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007094648A (en) * 2005-09-28 2007-04-12 Toshiba Corp Electronics
WO2014136266A1 (en) * 2013-03-08 2014-09-12 株式会社 東芝 Electronic device

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100437005C (en) * 2005-07-08 2008-11-26 富准精密工业(深圳)有限公司 flat heat pipe
US20070121291A1 (en) * 2005-11-30 2007-05-31 Inventec Corporation Heat sink module of a notebook computer
CN100561107C (en) * 2006-03-03 2009-11-18 超众科技股份有限公司 Method for manufacturing heat pipe with expansion part
JP2007286785A (en) * 2006-04-14 2007-11-01 Fujitsu Ltd Electronic equipment and cooling parts
TWI315461B (en) * 2006-11-13 2009-10-01 Asustek Comp Inc Portable electronic device
TWI413887B (en) 2008-01-07 2013-11-01 Compal Electronics Inc Heat pipe structure
CN101493294B (en) * 2008-01-21 2010-10-13 仁宝电脑工业股份有限公司 Heat pipe structure
TWM375205U (en) * 2009-09-24 2010-03-01 Celsia Technologies Taiwan Inc Flat hot pipe
JP5927539B2 (en) * 2011-07-25 2016-06-01 パナソニックＩｐマネジメント株式会社 Electronics
CN103906412A (en) * 2012-12-29 2014-07-02 鸿富锦精密工业（深圳）有限公司 Cooling device
EP3182045B1 (en) * 2015-12-14 2023-01-25 AT & S Austria Technologie & Systemtechnik Aktiengesellschaft Component carrier with embedded heat pipe and method of manufacturing
US10485135B2 (en) * 2017-06-30 2019-11-19 Dell Products, L.P. Storage device cooling utilizing a removable heat pipe
US10622282B2 (en) * 2017-07-28 2020-04-14 Qualcomm Incorporated Systems and methods for cooling an electronic device
KR102886946B1 (en) * 2020-07-31 2025-11-17 엘지이노텍 주식회사 Converter
US11425842B2 (en) * 2020-09-14 2022-08-23 Hewlett Packard Enterprise Development Lp Thermal design of an access point
CN213841858U (en) * 2020-11-05 2021-07-30 亚浩电子五金塑胶（惠州）有限公司 Heat pipe and heat radiation structure with same
JP7097477B1 (en) * 2021-05-12 2022-07-07 レノボ・シンガポール・プライベート・リミテッド Manufacturing methods for electronic devices, cooling devices, and cooling devices
USD1073040S1 (en) * 2021-09-02 2025-04-29 Delta Electronics, Inc. Fan
TWI840730B (en) * 2022-01-04 2024-05-01 尼得科超眾科技股份有限公司 Irregular-shaped heat pipe and method of manufacturing thereof
TWI860545B (en) * 2022-09-16 2024-11-01 奇鋐科技股份有限公司 Thermal module
US20240365500A1 (en) * 2023-04-26 2024-10-31 Auras Technology Co., Ltd. Heat dissipation device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4273100A (en) * 1979-02-16 1981-06-16 W. R. Grace & Co. Passive solar heating and cooling panels
DE3008068A1 (en) * 1979-03-03 1980-09-11 Canon Kk FACSIMILE DEVICE
US5451989A (en) * 1989-07-28 1995-09-19 Canon Kabushiki Kaisha Ink jet recording apparatus with a heat pipe for temperature stabilization
EP0498897B1 (en) * 1990-09-03 1995-11-29 The Furukawa Electric Co., Ltd. Material for electrical wiring and transformer
US6113212A (en) * 1998-04-16 2000-09-05 Eastman Kodak Company Method and apparatus for thermal control of LED printheads
US6408934B1 (en) * 1998-05-28 2002-06-25 Diamond Electric Mfg. Co., Ltd. Cooling module
US6366460B1 (en) * 1998-07-27 2002-04-02 Compaq Computer Corporation Heat dissipation structure for electronic apparatus component
US6166907A (en) * 1999-11-26 2000-12-26 Chien; Chuan-Fu CPU cooling system
US6313990B1 (en) * 2000-05-25 2001-11-06 Kioan Cheon Cooling apparatus for electronic devices
JP3607608B2 (en) * 2000-12-19 2005-01-05 株式会社日立製作所 Liquid cooling system for notebook computers
JP3637304B2 (en) * 2001-11-29 2005-04-13 株式会社東芝 Small electronic equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007094648A (en) * 2005-09-28 2007-04-12 Toshiba Corp Electronics
WO2014136266A1 (en) * 2013-03-08 2014-09-12 株式会社 東芝 Electronic device
JP2014174979A (en) * 2013-03-08 2014-09-22 Toshiba Corp Electronic apparatus

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TW200508845A (en) 2005-03-01
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