JP2003283173A - Cooling structure for electronic instrument - Google Patents

Cooling structure for electronic instrument

Info

Publication number
JP2003283173A
JP2003283173A JP2002082769A JP2002082769A JP2003283173A JP 2003283173 A JP2003283173 A JP 2003283173A JP 2002082769 A JP2002082769 A JP 2002082769A JP 2002082769 A JP2002082769 A JP 2002082769A JP 2003283173 A JP2003283173 A JP 2003283173A
Authority
JP
Japan
Prior art keywords
heat
section
flow path
absorbing
cooling
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
JP2002082769A
Other languages
Japanese (ja)
Inventor
Hiromitsu Yamanaka
啓光 山中
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.)
Hitachi Kokusai Electric Inc
Original Assignee
Hitachi Kokusai Electric Inc
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 Hitachi Kokusai Electric Inc filed Critical Hitachi Kokusai Electric Inc
Priority to JP2002082769A priority Critical patent/JP2003283173A/en
Publication of JP2003283173A publication Critical patent/JP2003283173A/en
Pending legal-status Critical Current

Links

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling structure for an electronic instrument capable of effective cooling even when miniature heating parts are provided and distributed. <P>SOLUTION: There are provided a heat radiation section 1 cooled with cooling air, a variable shape heat sink section 4 in close contact with a heating source 9, flow passages 5, 6 for connecting the heat radiation section and the heat sink section, and a heat medium 13 encapsulated to circulate the sink section and the heat absorption section mediating the flow passages. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は発熱部品を収納する
電子機器の冷却構造、特に狭小な筐体内で発熱源が分散
している場合の電子機器の冷却器構造に関するものであ
る。 【0002】 【従来の技術】電子機器には、小型化が要求される一方
で高機能化が要求され、筐体内部には発熱源である発熱
部品が収納されている。発熱部品を所定の性能に維持
し、発熱による損傷を防止するには発熱部品の冷却が必
要である。 【0003】従来の電子機器に於いて、筐体内の発熱部
品を冷却する方法としては、発熱部品にヒートシンクを
取付け、該ヒートシンクに強制的に冷却空気を流通させ
るのが一般的である。 【0004】 【発明が解決しようとする課題】上記した従来の電子機
器の冷却器構造では、形状の大きなヒートシンクを取付
ける為の空間を必要とし、又空気の流通空間の確保が必
要となり、電子機器の小型化を妨げる要因となってお
り、発熱部品が複数ある場合は特に問題となっていた。
更に、効果的に放熱が行われる様な空気の循環経路の設
定、或は発熱部品の配置の設定が必要となる等、設計上
の制約を伴うと共に電子機器の製作価格を増大させてい
た。 【0005】本発明は斯かる実情に鑑み、小型で発熱部
品が分散して設けられる場合も効果的な冷却が行える電
子機器の冷却器構造を提供しようとするものである。 【0006】 【課題を解決するための手段】本発明は、冷却空気によ
り冷却される放熱部と、発熱源に密着される形状可変の
吸熱部と、該吸熱部と前記放熱部とを接続する流路と、
該流路を介し前記放熱部と吸熱部間を循環する様に封入
された熱媒体とを具備する電子機器の冷却器構造に係る
ものである。 【0007】 【発明の実施の形態】以下、図面を参照しつつ本発明の
実施の形態を説明する。 【0008】先ず、図1により本実施の形態の概略を説
明する。 【0009】図1中、1は筐体(図示せず)の上位に設
けられた放熱部、2は冷却ファン、3は放熱流路、4は
前記放熱部1の下方に設けられた吸熱部、5はゴム等屈
撓自在な材質からなる吸熱部往流路、6はゴム等屈撓自
在な材質からなる吸熱部復流路、7は前記吸熱部往流路
5に設けられ、前記放熱部1から前記吸熱部4方向にの
み流れる様にした逆止弁、8は前記吸熱部復流路6に設
けられ、前記吸熱部4から前記放熱部1方向にのみ流れ
る様にした逆止弁、9は前記吸熱部4で冷却される発熱
部品を示している。 【0010】前記冷却ファン2、前記放熱部1、放熱流
路3は開放放熱系11、前記吸熱部往流路5、前記吸熱
部4、前記吸熱部復流路6は閉鎖吸熱循環系12を構成
する。該閉鎖吸熱循環系12には水等の流体熱媒体13
が封入されている。 【0011】電子機器が駆動されると、前記冷却ファン
2が駆動され、冷却空気が前記放熱流路3を介して前記
開放放熱系11に流通する。前記発熱部品9が発熱し、
前記吸熱部4により熱が吸熱される。該吸熱部4での吸
熱により前記流体熱媒体13が加熱され、対流により該
流体熱媒体13が前記吸熱部復流路6を上昇し、前記放
熱部1に流入する。 【0012】該放熱部1では前記冷却ファン2からの冷
却空気により、前記流体熱媒体13が冷却され、該流体
熱媒体13は前記吸熱部往流路5を通って前記吸熱部4
に流下する。而して、前記流体熱媒体13は前記吸熱部
4で吸熱し、前記放熱部1で放熱する閉鎖循環流とな
り、前記発熱部品9を冷却する。前記逆止弁7、逆止弁
8は前記閉鎖吸熱循環系12での前記流体熱媒体13の
逆流を防止し、該流体熱媒体13の循環を円滑にする。 【0013】図2、図3により具体的に説明する。 【0014】前記放熱部1は中空の筒状をしており、中
心の中空部14を前記冷却ファン2からの冷却空気が流
通する様になっている。又、前記中空部14の周囲には
複数の放熱流路15が形成され、該放熱流路15それぞ
れに前記閉鎖吸熱循環系12が接続可能となっている。 【0015】前記吸熱部4は屈撓性、伸縮性を有し、形
状が自在に可変である袋状となっている。又、該吸熱部
4の材質は内層16、外層17の2層構造となってお
り、前記内層16には水密性を有し屈撓、伸縮性を有す
る材質、例えばゴムが用いられ、前記外層17には軟
性、密着性のよいゲル状の材質、例えばシリコンが用い
られる。又、前記内層16、外層17は伝熱性を向上さ
せる為、銀、アルミニウム等の金属粉を混入したものと
してもよい。 【0016】前記放熱部1には冷却を必要とする発熱部
品の数だけ前記閉鎖吸熱循環系12が接続され、該各閉
鎖吸熱循環系12の前記吸熱部4が前記発熱部品9に密
着されて設けられる。前記吸熱部4の外層17はゲル状
であるので、前記発熱部品9の放熱面に凹凸があった場
合でも隙間なく密着し、大きな伝熱面積が得られる。 【0017】前記発熱部品9の発熱は前記吸熱部4を介
して前記流体熱媒体13に吸熱され、前記発熱部品9が
冷却される。又、前記流体熱媒体13は前記放熱部1を
流通することで放熱し、冷却された状態で前記吸熱部4
に流入する。 【0018】該吸熱部4は箇々に発熱部品に取付けら
れ、又前記吸熱部往流路5、前記吸熱部復流路6は屈撓
自在であり、長さを調整することで、前記発熱部品9の
位置に拘らず、確実に前記吸熱部4を前記発熱部品9に
密着させ設けることができる。又、該発熱部品9が複数
あり、分散して設けられている場合でも同様にして冷却
することができる。 【0019】又、前記吸熱部往流路5、吸熱部復流路
6、流体熱媒体13により発熱源である発熱部品9から
熱を移動させ、発熱源とは別の場所で冷却するので、発
熱源の周囲に空間がなくても冷却が可能であり、冷却空
気の流通路、発熱源の配置等設計上の制約を大幅に緩和
することができる。 【0020】尚、上記実施の形態で示した放熱流路3は
冷却空気の流通状態を示しており、管路を形成してもよ
く、或は前記冷却ファン2から前記放熱部1に冷却空気
を吹付けるだけでもよい。又、前記放熱部1を一体で示
したが、前記各閉鎖吸熱循環系12が放熱部を有し、該
各放熱部を一カ所に集合させ、前記冷却ファン2で冷却
する様にしてもよい。 【0021】更に、前記逆止弁7、逆止弁8は前記吸熱
部4、吸熱部往流路5、吸熱部復流路6の取付け姿勢が
鉛直方向である場合等、逆流が生じない取付け姿勢であ
れば、省略することが可能である。又、複数の発熱部品
9が近接して設けられている場合は、1つの吸熱部4に
より複数の発熱部品9を冷却する様にしてもよい。 【0022】 【発明の効果】以上述べた如く本発明によれば、冷却空
気により冷却される放熱部と、発熱源に密着される形状
可変の吸熱部と、該吸熱部と前記放熱部とを接続する流
路と、該流路を介し前記放熱部と吸熱部間を循環する様
に封入された熱媒体とを具備するので、発熱源の位置に
拘らず、又発熱源の周囲に空間が確保できない場合で
も、又発熱源が分散して設けられる場合でも効果的な冷
却が行える等優れた効果を発揮する。
Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a cooling structure for an electronic device that accommodates a heat-generating component, and more particularly to cooling of an electronic device when a heat source is dispersed in a small housing. Related to the vessel structure. 2. Description of the Related Art Electronic equipment is required to have high functionality while being downsized, and a heat generating component which is a heat source is housed in a housing. Cooling of the heat-generating component is necessary to maintain the heat-generating component at a predetermined performance and prevent damage due to heat generation. In a conventional electronic device, as a method of cooling a heat-generating component in a housing, a heat sink is generally attached to the heat-generating component, and cooling air is forced to flow through the heat sink. [0004] The above-described conventional cooler structure for electronic equipment requires a space for mounting a heat sink having a large shape, and also requires a space for air to flow. This is a factor that hinders miniaturization of the device, and has been a particular problem when there are a plurality of heat generating components.
Further, it is necessary to set an air circulation path for effectively dissipating heat, or to set an arrangement of heat-generating components, thereby entailing design restrictions and increasing the production cost of electronic devices. The present invention has been made in view of the above circumstances, and has as its object to provide a cooler structure of an electronic device which is small and can perform effective cooling even when heat-generating components are dispersedly provided. According to the present invention, there is provided a heat radiating portion cooled by cooling air, a heat absorbing portion having a variable shape which is in close contact with a heat generating source, and connecting the heat absorbing portion and the heat radiating portion. A flow path;
The present invention relates to a cooler structure of an electronic device including a heat medium sealed so as to circulate between the heat radiating portion and the heat absorbing portion through the flow path. Embodiments of the present invention will be described below with reference to the drawings. First, an outline of the present embodiment will be described with reference to FIG. In FIG. 1, reference numeral 1 denotes a heat radiating portion provided above a housing (not shown), 2 denotes a cooling fan, 3 denotes a heat radiating passage, and 4 denotes a heat absorbing portion provided below the heat radiating portion 1. Reference numeral 5 denotes a heat-absorbing part outward flow path made of a flexible material such as rubber; 6, a heat-absorbing part return flow path made of a flexible material such as rubber; A check valve 8 which is provided only in the direction of the heat absorbing section 4 from the section 1, and a check valve 8 provided in the heat absorbing section return flow path 6 and which is allowed to flow only in the direction of the heat absorbing section 4 from the heat absorbing section 4. , 9 indicate heat-generating components to be cooled by the heat absorbing section 4. The cooling fan 2, the heat radiating section 1, and the heat radiating flow path 3 have an open heat radiating system 11, the heat absorbing section going flow path 5, the heat absorbing section 4, and the heat absorbing section returning flow path 6 have a closed heat absorbing / circulating system 12. Constitute. The closed heat absorption circulation system 12 includes a fluid heat medium 13 such as water.
Is enclosed. When the electronic device is driven, the cooling fan 2 is driven, and cooling air flows to the open heat radiation system 11 through the heat radiation passage 3. The heating component 9 generates heat,
The heat is absorbed by the heat absorbing section 4. The fluid heat medium 13 is heated by the heat absorption in the heat absorbing section 4, and the fluid heat medium 13 rises in the heat absorbing section return flow path 6 by convection and flows into the heat radiating section 1. In the heat radiating section 1, the fluid heat medium 13 is cooled by the cooling air from the cooling fan 2, and the fluid heat medium 13 passes through the heat absorbing section outward flow path 5 and the heat absorbing section 4.
Flow down to Thus, the fluid heat medium 13 absorbs heat in the heat absorbing section 4 and forms a closed circulation flow in which heat is radiated in the heat radiating section 1 to cool the heat generating component 9. The check valve 7 and the check valve 8 prevent the fluid heat medium 13 from flowing backward in the closed heat absorbing and circulating system 12 and make the circulation of the fluid heat medium 13 smooth. This will be described more specifically with reference to FIGS. The heat radiating section 1 has a hollow cylindrical shape, and the cooling air from the cooling fan 2 flows through the central hollow section 14. A plurality of heat radiation channels 15 are formed around the hollow portion 14, and the closed heat absorption / circulation system 12 can be connected to each of the heat radiation channels 15. The heat-absorbing section 4 is flexible and flexible, and has a bag shape whose shape is freely variable. The material of the heat absorbing portion 4 has a two-layer structure of an inner layer 16 and an outer layer 17, and the inner layer 16 is made of a material having watertightness, bending, and elasticity, for example, rubber. For 17, a gel material having good softness and adhesion, for example, silicon is used. The inner layer 16 and the outer layer 17 may be mixed with a metal powder such as silver or aluminum in order to improve the heat transfer. The closed heat absorbing and circulating systems 12 are connected to the heat radiating portion 1 by the number of heat generating components requiring cooling, and the heat absorbing portions 4 of the closed heat absorbing and circulating systems 12 are closely attached to the heat generating components 9. Provided. Since the outer layer 17 of the heat absorbing portion 4 is in a gel state, even if the heat radiating surface of the heat generating component 9 has irregularities, it adheres tightly without any gap, and a large heat transfer area can be obtained. The heat generated by the heat-generating component 9 is absorbed by the fluid heat medium 13 via the heat-absorbing portion 4, and the heat-generating component 9 is cooled. The fluid heat medium 13 radiates heat by flowing through the heat radiating section 1, and in a cooled state, the heat absorbing section 4.
Flows into. The heat-absorbing portion 4 is attached to each heat-generating component, and the heat-absorbing portion outgoing flow path 5 and the heat-absorbing portion return flow path 6 are flexible. Regardless of the position of 9, the heat absorbing portion 4 can be securely provided in close contact with the heat generating component 9. Further, even when a plurality of the heat generating components 9 are provided and distributed, the cooling can be performed in the same manner. Further, heat is transferred from the heat-generating component 9 as a heat source by the heat-absorbing part outward flow path 5, the heat-absorbing part return flow path 6, and the fluid heat medium 13, and is cooled in a place different from the heat source. Even if there is no space around the heat source, cooling can be performed, and design restrictions such as the flow path of the cooling air and the arrangement of the heat source can be greatly reduced. The heat radiating flow path 3 shown in the above embodiment indicates the flow state of the cooling air, and may form a conduit, or the cooling air may be supplied from the cooling fan 2 to the heat radiating section 1. You may just spray. Further, although the heat radiating portion 1 is shown as one body, each of the closed heat absorbing and circulating systems 12 may have a heat radiating portion, and the heat radiating portions may be gathered in one place and cooled by the cooling fan 2. . Further, the check valve 7 and the check valve 8 are mounted so that no backflow occurs when the mounting position of the heat absorbing section 4, the heat absorbing section outward flow path 5, and the heat absorbing section return flow path 6 is vertical. If it is a posture, it can be omitted. When a plurality of heat generating components 9 are provided close to each other, the plurality of heat generating components 9 may be cooled by one heat absorbing portion 4. As described above, according to the present invention, the heat radiating portion cooled by the cooling air, the heat absorbing portion having a variable shape which is in close contact with the heat source, and the heat absorbing portion and the heat radiating portion are provided. Since there is provided a flow path to be connected, and a heat medium sealed so as to circulate between the heat radiating section and the heat absorbing section through the flow path, regardless of the position of the heat source, a space around the heat source is formed. Even when the heat source cannot be secured, or when the heat sources are dispersedly provided, an excellent effect such as effective cooling can be achieved.

【図面の簡単な説明】 【図1】本発明の実施の形態を示す概略構成図である。 【図2】本発明の実施の形態を示す模式図である。 【図3】該実施の形態での吸熱部の断面図である。 【符号の説明】 1 放熱部 2 冷却ファン 3 放熱流路 4 吸熱部 5 吸熱部往流路 6 吸熱部復流路 9 発熱部品 12 閉鎖吸熱循環系[Brief description of the drawings] FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention. FIG. 2 is a schematic diagram showing an embodiment of the present invention. FIG. 3 is a cross-sectional view of a heat absorbing portion according to the embodiment. [Explanation of symbols] 1 Heat radiation part 2 Cooling fan 3 Heat dissipation channel 4 Heat absorption part 5 Outgoing channel of heat absorption section 6 Heat absorption section return flow 9 Heating parts 12 Closed endothermic circulation system

Claims (1)

【特許請求の範囲】 【請求項1】 冷却空気により冷却される放熱部と、発
熱源に密着される形状可変の吸熱部と、該吸熱部と前記
放熱部とを接続する流路と、該流路を介し前記放熱部と
吸熱部間を循環する様に封入された熱媒体とを具備する
ことを特徴とする電子機器の冷却器構造。
Claims: 1. A heat radiating part cooled by cooling air, a heat absorbing part having a variable shape closely contacting a heat source, a flow path connecting the heat absorbing part and the heat radiating part, A cooler structure for an electronic device, comprising: a heat medium sealed so as to circulate between the heat radiating portion and the heat absorbing portion through a flow path.
JP2002082769A 2002-03-25 2002-03-25 Cooling structure for electronic instrument Pending JP2003283173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002082769A JP2003283173A (en) 2002-03-25 2002-03-25 Cooling structure for electronic instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002082769A JP2003283173A (en) 2002-03-25 2002-03-25 Cooling structure for electronic instrument

Publications (1)

Publication Number Publication Date
JP2003283173A true JP2003283173A (en) 2003-10-03

Family

ID=29230828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002082769A Pending JP2003283173A (en) 2002-03-25 2002-03-25 Cooling structure for electronic instrument

Country Status (1)

Country Link
JP (1) JP2003283173A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005182776A (en) * 2003-12-17 2005-07-07 Hewlett-Packard Development Co Lp One or more heat exchange components operated by disposing major part outside computer chassis
JP2009088127A (en) * 2007-09-28 2009-04-23 Panasonic Corp Cooling apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005182776A (en) * 2003-12-17 2005-07-07 Hewlett-Packard Development Co Lp One or more heat exchange components operated by disposing major part outside computer chassis
JP2009088127A (en) * 2007-09-28 2009-04-23 Panasonic Corp Cooling apparatus

Similar Documents

Publication Publication Date Title
US9807906B2 (en) Liquid-cooling device and system thereof
JP3979143B2 (en) Cooling device for information processing equipment
JP3097594U (en) Combination structure of CPU heat dissipation device and power supply
TW200946010A (en) Electronic device cooling apparatus and electronic device including the same
JP2004295718A (en) Liquid cooling system for information processor
JP2004363525A (en) Cooling structure for electronic equipment
KR100939992B1 (en) Cooling Apparatus, and Electric-Electronic Equipment with the Cooling Apparatus
US11910564B2 (en) Liquid cooling device and manufacturing method thereof
JP2004293833A (en) Cooling device
CN207674759U (en) A kind of semiconductor cooling device
JP2005183676A (en) Electronic cooling unit
JPH0783582A (en) Sealed equipment container cooling device
US20050243515A1 (en) Apparatus for enhancing heat transfer efficiency of endothermic/exothermic article
JP4697171B2 (en) COOLING DEVICE AND ELECTRONIC DEVICE HAVING THE SAME
US20090301692A1 (en) Electronic Apparatus Cooling Device
JP2003283173A (en) Cooling structure for electronic instrument
US20070139888A1 (en) Heat transfer system
JP2002353668A (en) Electronic component cooling unit and cooling system
JP2008235496A (en) Cooling board
JP2006046868A (en) Radiator and heat pipe
JP2007335624A (en) Liquid-cooled cooler for electronic appliance
JP2006074029A (en) Heat transport device
CN211378651U (en) Electronic equipment and heat dissipation device thereof
JP2004247574A (en) Substrate cooling device
TWM245500U (en) Water cooling apparatus