JP2010133642A - Radiator, cooling unit, cooling system and electronic device - Google Patents

Radiator, cooling unit, cooling system and electronic device Download PDF

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Publication number
JP2010133642A
JP2010133642A JP2008309925A JP2008309925A JP2010133642A JP 2010133642 A JP2010133642 A JP 2010133642A JP 2008309925 A JP2008309925 A JP 2008309925A JP 2008309925 A JP2008309925 A JP 2008309925A JP 2010133642 A JP2010133642 A JP 2010133642A
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Prior art keywords
tube
refrigerant
radiator
cooling
cooling jacket
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JP5531400B2 (en
Inventor
Masumi Suzuki
真純 鈴木
Michimasa Aoki
亨匡 青木
Yosuke Tsunoda
洋介 角田
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Fujitsu Ltd
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Fujitsu Ltd
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Priority to JP2008309925A priority Critical patent/JP5531400B2/en
Priority to US12/609,677 priority patent/US20100139891A1/en
Priority to CN2009102258430A priority patent/CN101749968B/en
Priority to KR1020090118385A priority patent/KR101158201B1/en
Publication of JP2010133642A publication Critical patent/JP2010133642A/en
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    • 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
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0475—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
    • F28D1/0476—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend the conduits having a non-circular cross-section
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thinned radiator, a cooling unit, a cooling system and an electronic device. <P>SOLUTION: This radiator 30 is provided with: a flat tube 34 in which a refrigerant flows, and which is provided with fins 38 at its outer side; an introduction tube 32b communicated with one end of the tube 34 at its side face for introducing the refrigerant to the tube 34 from the communicating section; and a discharge tube 32a communicated with the other end of the tube 34 at its side face for discharging the refrigerant from the tube 34 from the communicating section. The tube 34 includes: an extended section 34b connected with the communicating section of the introduction tube 32b and extended in the prescribed direction, a curved section 34c continued from the extended section 34b; and an extended section 34a continued from the curved section 34c, extended in a state of being opposed to the extended section 34b, and connected with the communicating section of the discharge tube 32a, and the introduction tube 32b and the discharge tube 32a are arranged in parallel with each other in the direction along the virtual extended face of the extended section 34b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ラジエータ、冷却ユニット、冷却システム及び電子機器に関する。   The present invention relates to a radiator, a cooling unit, a cooling system, and an electronic apparatus.

電子機器に搭載された電子部品を、液状の冷媒を用いて冷却するユニットがある。このようなユニットには、冷媒を放熱するラジエータを備えたものがある。   There is a unit that cools an electronic component mounted on an electronic device using a liquid refrigerant. Some of such units include a radiator that radiates heat from the refrigerant.

特開平１０−１８５４６６号公報Japanese Patent Laid-Open No. 10-185466 特開２００７−１７０７１８号公報JP 2007-170718 A 特開２００７−１９２４２９号公報JP 2007-192429 A

ラジエータは、内部を冷媒が通過するチューブと、チューブの両端に接続されたタンクとを備えたものがある。しかしながら、このようなラジエータを備えたユニットを小型の電子機器に採用する場合、ラジエータのタンクの大きさによっては、ユニットの採用が困難な場合がある。   Some radiators include a tube through which a refrigerant passes and tanks connected to both ends of the tube. However, when a unit including such a radiator is employed in a small electronic device, it may be difficult to employ the unit depending on the size of the tank of the radiator.

そこで本発明は上記の課題に鑑みてなされたものであり、薄型化されたラジエータ、冷却ユニット、冷却システム及び電子機器を提供することを目的とする。   Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a radiator, a cooling unit, a cooling system, and an electronic device that are thinned.

本明細書に開示のラジエータは、内部に冷媒が流れ、外側にフィンが接続された扁平状のチューブと、側面に前記チューブの一端が連通され、該連通部分より前記チューブに前記冷媒を導入する導入管と、側面に前記チューブの他端が連通され、該連通部分より前記チューブから前記冷媒を排出する排出管と、を備え、前記チューブは、前記導入管の連通部に接続され、所定方向に延びた第１延在部と、前記第１延在部と連続した湾曲部と、前記湾曲部と連続して前記第１延在部と向かい合うように延在し前記排出管の連通部に接続された第２延在部と、を含み、前記導入管及び排出管は、互いに並列し、前記第１又は第２延在部の仮想延長面に沿った方向に並んでいる。導入管及び排出管が、互いに並列し、第１又は第２延在部の仮想延長面に沿った方向に並んでいるので、第１又は第２延在部の仮想延長面に直交する方向でのラジエータの厚みが抑制される。   In the radiator disclosed in the present specification, a refrigerant flows inside, a flat tube having fins connected to the outside, and one end of the tube communicated with a side surface, and the refrigerant is introduced into the tube from the communicating part. The other end of the tube communicated with the side surface, and a discharge tube for discharging the refrigerant from the tube through the communicating portion, the tube being connected to a communication portion of the introduction tube, and having a predetermined direction A first extending portion that extends to the first extending portion, a curved portion that is continuous with the first extending portion, and a continuous portion that is continuous with the curved portion and faces the first extending portion, and is connected to the communicating portion of the discharge pipe. And the introduction pipe and the discharge pipe are arranged in parallel with each other in a direction along a virtual extension surface of the first or second extension part. Since the introduction pipe and the discharge pipe are arranged in parallel with each other and aligned in the direction along the virtual extension surface of the first or second extension portion, in the direction orthogonal to the virtual extension surface of the first or second extension portion. The thickness of the radiator is suppressed.

また、本明細書に開示の冷却ユニットは、上記のラジエータと、内部を冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備え、前記ポンプは、前記冷却ジャケット内の前記冷媒を吸引する吸引管と、吸引した前記冷媒を前記冷却ジャケットへ吐出すると共に前記吸引管と並列した吐出管とを備え、前記導入管及び排出管と、前記吸引管及び吐出管とは、一定の方向に沿うように延びており、略同一直線状にある。これにより、導入管及び排出管と、吸引管及び吐出管とが略同一直線状にない場合と比較し、冷却ユニットの振動が抑制される。   Further, the cooling unit disclosed in the present specification includes the above-described radiator, a cooling jacket through which a refrigerant flows and transmits heat of an electronic component to the refrigerant, and the refrigerant between the cooling jacket and the radiator. A pump that circulates the refrigerant, and the pump includes a suction pipe that sucks the refrigerant in the cooling jacket, and a discharge pipe that discharges the sucked refrigerant to the cooling jacket and parallel to the suction pipe. The introduction tube and the discharge tube, and the suction tube and the discharge tube extend along a certain direction and are substantially in the same straight line. Thereby, compared with the case where the introduction tube and the discharge tube, and the suction tube and the discharge tube are not substantially in the same straight line, the vibration of the cooling unit is suppressed.

また、本明細書に開示の冷却ユニットは、上記のラジエータと、内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備えている。   Further, the cooling unit disclosed in the present specification includes the radiator, a cooling jacket through which the refrigerant flows and transmits heat of an electronic component to the refrigerant, and between the cooling jacket and the radiator. And a pump for circulating the refrigerant.

また、本明細書に開示の冷却ユニットは、上記のラジエータと、内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、前記囲い板により囲われた空間に向けて送風する冷却ファンと、を備えている。冷却ファンが囲い板により囲われた空間に向けて送風するので、ラジエータの放熱効率が向上する。   Further, the cooling unit disclosed in the present specification includes the radiator, a cooling jacket through which the refrigerant flows and transmits heat of an electronic component to the refrigerant, and between the cooling jacket and the radiator. A pump that circulates the refrigerant; and a cooling fan that blows air toward a space surrounded by the surrounding plate. Since the cooling fan blows air toward the space surrounded by the enclosure plate, the heat dissipation efficiency of the radiator is improved.

以下、実施形態について図面を参照して説明する。   Hereinafter, embodiments will be described with reference to the drawings.

電子機器の一例としてノートパソコンを説明する。図１（Ａ）〜図１（Ｃ）は、ノートパソコン１の説明図である。ノートパソコン１は、開閉可能に連結された表示部２、本体部３を有している。表示部２は、液晶ディスプレイ４が設けられている。本体部３には、キーボード５が設けられている。本体部３には、各種電子部品が内蔵されている。図１（Ｃ）は、底面側から見たノートパソコン１の斜視図であり、本体部３の底面カバーを外した状態を示している。図１（Ｃ）に例示するように、本体部３には冷却ユニット８が内蔵されている。冷却ユニット８は、ノートパソコン１内の電子部品を冷却する。図２は、冷却ユニット８の斜視図である。冷却ユニット８は、プリント基板上に実装され、冷却ジャケット１０、ポンプ２０、ラジエータ３０、冷却ファン４０を含む。   A notebook computer will be described as an example of an electronic device. FIG. 1A to FIG. 1C are explanatory diagrams of a notebook computer 1. The notebook computer 1 includes a display unit 2 and a main body unit 3 that are connected to each other so as to be opened and closed. The display unit 2 is provided with a liquid crystal display 4. The main body 3 is provided with a keyboard 5. Various electronic components are built in the main body 3. FIG. 1C is a perspective view of the notebook computer 1 viewed from the bottom side, and shows a state where the bottom cover of the main body 3 is removed. As illustrated in FIG. 1C, the main body 3 includes a cooling unit 8. The cooling unit 8 cools electronic components in the notebook computer 1. FIG. 2 is a perspective view of the cooling unit 8. The cooling unit 8 is mounted on a printed board and includes a cooling jacket 10, a pump 20, a radiator 30, and a cooling fan 40.

冷却ジャケット（以下、ジャケットと称する）１０は、内部を冷媒が流通する。ジャケット１０は、ケース１１ａ、蓋１１ｂを有している。ケース１１ａ、蓋１１ｂは、筺体に相当する。ケース１１ａ、蓋１１ｂは、例えば、銅、アルミニウム等の熱伝導性に優れた金属製である。ジャケット１０は、扁平状である。ジャケット１０は、プリント基板５０に実装されたＣＰＵ７０ｂ等の電子部品に当接している。これにより、電子部品の熱がジャケット１０内を流れる冷媒に伝達される。   A cooling jacket (hereinafter referred to as a jacket) 10 has a coolant flowing through it. The jacket 10 has a case 11a and a lid 11b. The case 11a and the lid 11b correspond to a housing. The case 11a and the lid 11b are made of metal having excellent thermal conductivity such as copper and aluminum. The jacket 10 has a flat shape. The jacket 10 is in contact with an electronic component such as the CPU 70b mounted on the printed circuit board 50. Thereby, the heat of the electronic component is transmitted to the refrigerant flowing in the jacket 10.

ポンプ２０は、ジャケット１０とラジエータ３０との間で冷媒を循環させる。ポンプ２０は電動式である。また、ポンプ２０とジャケット１０とは、ゴムチューブ６０を介して連通している。ゴムチューブ６０は、冷媒の漏れを防止するためのものである。ゴムチューブ６０、金属製のベルトによって締結されている。ポンプ２０は、扁平状である。   The pump 20 circulates the refrigerant between the jacket 10 and the radiator 30. The pump 20 is an electric type. Further, the pump 20 and the jacket 10 communicate with each other through a rubber tube 60. The rubber tube 60 is for preventing leakage of the refrigerant. It is fastened by a rubber tube 60 and a metal belt. The pump 20 is flat.

ラジエータ３０は、ジャケット１０で受熱した冷媒を放熱する。ラジエータ３０は、例えばアルミニウム等の金属製である。ラジエータ３０は、単一のチューブ３４、囲い板３６、排出管３２ａ、導入管３２ｂを有している。チューブ３４は、内部に冷媒が通過する扁平状であって略Ｕ字状である。排出管３２ａは、側面にチューブ３４の他端が連通され、該連通部よりチューブ３４から冷媒を排出する。導入管３２ｂは、側面にチューブ３４の一端が連通され、該連通部よりチューブ３４に冷媒を導入する。また、囲い板３６はチューブ３４を囲う。排出管３２ａ、導入管３２ｂは、それぞれジャケット１０に連通している。排出管３２ａ、導入管３２ｂと、ジャケット１０とは、ゴムチューブ６０を介して連通されている。   The radiator 30 radiates the refrigerant received by the jacket 10. The radiator 30 is made of metal such as aluminum. The radiator 30 includes a single tube 34, a surrounding plate 36, a discharge pipe 32a, and an introduction pipe 32b. The tube 34 is a flat shape through which the refrigerant passes, and is substantially U-shaped. The other end of the tube 34 communicates with the side surface of the discharge pipe 32a, and the refrigerant is discharged from the tube 34 through the communicating portion. One end of the tube 34 is communicated with the side surface of the introduction tube 32b, and the refrigerant is introduced into the tube 34 from the communication portion. The surrounding plate 36 surrounds the tube 34. The discharge pipe 32a and the introduction pipe 32b communicate with the jacket 10, respectively. The discharge pipe 32 a, the introduction pipe 32 b, and the jacket 10 are communicated with each other through a rubber tube 60.

冷却ファン４０は、開口４１を有し、内部にファン４２を収納している。ファン４２が回転することにより、開口４１を介して冷却ファン４０内に空気が取り込まれ、送風口４６から排出される。送風口４６は、ラジエータ３０と対向している。送風口４６から排出された空気は、ラジエータ３０に送風される。これにより、ラジエータ３０での冷媒の放熱が促進される。   The cooling fan 40 has an opening 41 and houses the fan 42 therein. When the fan 42 rotates, air is taken into the cooling fan 40 through the opening 41 and is discharged from the blower port 46. The blower port 46 faces the radiator 30. The air discharged from the blower port 46 is blown to the radiator 30. Thereby, the heat dissipation of the refrigerant in the radiator 30 is promoted.

プリント基板５０は、硬質のプリント配線板であり、所定のパターニングが施されている。プリント基板５０には、複数の電子部品が実装されている。これら電子部品は電力が供給されることによって発熱する。ＣＰＵ（Central Processing Unit）７０ｂは、プリント基板５０に実装された電子部品のうちの一つである。ＣＰＵ７０ｂは蓋１１ｂに接触している。これにより、ジャケット１０内を流通する冷媒は、ＣＰＵ７０ｂから熱を受け、ＣＰＵ７０ｂが冷却される。ジャケット１０、ラジエータ３０、冷却ファン４０は、プリント基板５０上に固定される。   The printed board 50 is a hard printed wiring board, and is subjected to predetermined patterning. A plurality of electronic components are mounted on the printed circuit board 50. These electronic components generate heat when electric power is supplied. The CPU (Central Processing Unit) 70 b is one of electronic components mounted on the printed circuit board 50. The CPU 70b is in contact with the lid 11b. Thereby, the refrigerant | coolant which distribute | circulates the inside of the jacket 10 receives heat from CPU70b, and CPU70b is cooled. The jacket 10, the radiator 30, and the cooling fan 40 are fixed on the printed circuit board 50.

冷媒は、例えば、水又は不凍液である。不凍液とは、水の凍結を防止する不凍液剤(例えばプロピレングリコールなど)を水に加えたものである。   The refrigerant is, for example, water or antifreeze. The antifreeze is obtained by adding an antifreeze agent (for example, propylene glycol or the like) that prevents freezing of water to water.

図３は、ジャケット１０の内部構造の説明図である。図３においては、ケース１１ａから蓋１１ｂを取り外した状態を示している。   FIG. 3 is an explanatory diagram of the internal structure of the jacket 10. FIG. 3 shows a state where the lid 11b is removed from the case 11a.

ジャケット１０内には、流路１２ａ、１２ｂが設けられている。詳細には、ケース１１ａに、流路１２ａ、１２ｂが設けられている。流路１２ａ、１２ｂは、互いに分け隔てられている。即ち、流路１２ａ、１２ｂは合流しない。また、流路１２ａ内には、気泡を捕捉するための突出部１５ａ、１６ａが設けられている。流路１２ｂ内には、ＣＰＵ７０ｂの放熱を促進するためのフィン１５ｂが設けられている。   Channels 12 a and 12 b are provided in the jacket 10. Specifically, flow paths 12a and 12b are provided in the case 11a. The flow paths 12a and 12b are separated from each other. That is, the flow paths 12a and 12b do not merge. In addition, protrusions 15a and 16a for capturing bubbles are provided in the flow path 12a. Fins 15b are provided in the flow path 12b to promote heat dissipation from the CPU 70b.

排出管３２ａから排出された冷媒は、流路１２ａに流れる。流路１２ａを流れる冷媒は、ポンプ２０に吸い込まれ、流路１２ｂへ排出される。流路１２ｂを流れる冷媒は、導入管３２ｂへと流れる。導入管３２ｂに導入された冷媒は、チューブ３４内を流れ、再び排出管３２ａから流路１２ａへと排出される。   The refrigerant discharged from the discharge pipe 32a flows into the flow path 12a. The refrigerant flowing through the flow path 12a is sucked into the pump 20 and discharged to the flow path 12b. The refrigerant flowing through the flow path 12b flows to the introduction pipe 32b. The refrigerant introduced into the introduction pipe 32b flows through the tube 34 and is again discharged from the discharge pipe 32a to the flow path 12a.

次に、ラジエータ３０について詳細に説明する。図４（Ａ）は、ラジエータ３０の側面図であり、図４（Ｂ）は、ラジエータ３０の斜視図である。図４（Ａ）に例示するように、チューブ３４は、延在部３４ａ、３４ｂ、湾曲部３４ｃを有している。延在部３４ｂは、導入管３２ｂの連通部に接続され、所定方向に延びている。湾曲部３４ｃは、延在部３４ｂと連続している。延在部３４ａは、湾曲部３４ｃと連続して延在部３４ｂと向かい合うように延在し排出管３２ａの連通部に接続されている。チューブ３４は、側面から見て略Ｕ字状に形成されている。延在部３４ａ、３４ｂは、平行である。   Next, the radiator 30 will be described in detail. 4A is a side view of the radiator 30, and FIG. 4B is a perspective view of the radiator 30. FIG. As illustrated in FIG. 4A, the tube 34 has extending portions 34a and 34b and a curved portion 34c. The extending part 34b is connected to the communicating part of the introduction pipe 32b and extends in a predetermined direction. The curved portion 34c is continuous with the extending portion 34b. The extending part 34a extends so as to face the extending part 34b continuously with the curved part 34c, and is connected to the communicating part of the discharge pipe 32a. The tube 34 is formed in a substantially U shape when viewed from the side. The extending portions 34a and 34b are parallel.

囲い板３６は、側面から見てＵ字状であり、チューブ３４を囲う。図４（Ａ）に例示するように、延在部３４ａと延在部３４ｂとの間と、チューブ３４と囲い板３６との間とには、フィン３８が設けられている。これにより、ラジエータ３０の放熱効率が向上する。尚、図２、図３、図４（Ｂ）には、フィン３８については省略してある。   The surrounding plate 36 is U-shaped when viewed from the side, and surrounds the tube 34. As illustrated in FIG. 4A, fins 38 are provided between the extending portion 34 a and the extending portion 34 b and between the tube 34 and the surrounding plate 36. Thereby, the heat dissipation efficiency of the radiator 30 is improved. Note that the fins 38 are omitted in FIGS. 2, 3, and 4 (B).

また、冷却ファン４０は、囲い板３６により囲まれた空間に向けて送風する。これにより、囲い板３６内を空気が通過し、ラジエータ３０の放熱効率が向上する。   Further, the cooling fan 40 blows air toward the space surrounded by the surrounding plate 36. Thereby, air passes through the enclosure plate 36, and the heat dissipation efficiency of the radiator 30 is improved.

また、チューブ３４は単一であるため、チューブ３４と、排出管３２ａ、導入管３２ｂとの連結箇所は、複数のチューブを備えたラジエータと比較し少ない。このため、連結箇所の削減によりラジエータ３０の信頼性が向上している。また、部品点数も削減しており、製造コストも抑制される。   Moreover, since the tube 34 is single, there are few connection locations of the tube 34, the discharge pipe 32a, and the introductory pipe 32b compared with the radiator provided with the some tube. For this reason, the reliability of the radiator 30 is improved by reducing the number of connected portions. In addition, the number of parts is reduced, and the manufacturing cost is also suppressed.

図４（Ａ）（Ｂ）に例示するように、排出管３２ａ、導入管３２ｂは、互いに並列し、延在部３４ｂの仮想延長面に沿った方向に並んでいる。これにより、延在部３４ａ又は延在部３４ｂの仮想延長面に直交する方向でのラジエータ３０の厚みが抑制される。これにより、ラジエータ３０は薄型化が達成されている。従って、ラジエータ３０は、ノートパソコン１のような薄型の電子機器への搭載が容易である。   As illustrated in FIGS. 4A and 4B, the discharge pipe 32a and the introduction pipe 32b are arranged in parallel to each other and in a direction along the virtual extension surface of the extending part 34b. Thereby, the thickness of the radiator 30 in the direction orthogonal to the virtual extension surface of the extension part 34a or the extension part 34b is suppressed. Thereby, the radiator 30 is thinned. Therefore, the radiator 30 can be easily mounted on a thin electronic device such as the notebook computer 1.

図５は、ポンプ２０とジャケット１０との接続部分周辺の模式図である。ポンプ２０は、吸引管２２ａ、吐出管２２ｂを有している。吸引管２２ａは、ジャケット１０の流路１２ａと連通しており、吐出管２２ｂはジャケット１０の流路１２ｂと連通している。流路１２ａ内の冷媒は吸引管２２ａによりポンプ２０内に吸引される。吸引された冷媒は吐出管２２ｂから流路１２ｂ内へと吐出される。図５に例示するように、吸引管２２ａ、吐出管２２ｂは、ゴムチューブ６０よりジャケット１０と連結されている。吸引管２２ａ、吐出管２２ｂは、並列している。   FIG. 5 is a schematic view of the periphery of the connection portion between the pump 20 and the jacket 10. The pump 20 has a suction tube 22a and a discharge tube 22b. The suction pipe 22 a communicates with the flow path 12 a of the jacket 10, and the discharge pipe 22 b communicates with the flow path 12 b of the jacket 10. The refrigerant in the flow path 12a is sucked into the pump 20 by the suction pipe 22a. The sucked refrigerant is discharged from the discharge pipe 22b into the flow path 12b. As illustrated in FIG. 5, the suction tube 22 a and the discharge tube 22 b are connected to the jacket 10 through the rubber tube 60. The suction tube 22a and the discharge tube 22b are arranged in parallel.

ここで、冷却ユニット８の振動について説明する。ポンプ２０は、吸引管２２ａから冷媒を吸引し、吐出管２２ｂから冷媒を吐出する。即ち、吸引管２２ａには、ジャケット１０側からポンプ２０側へと力が作用し、吐出管２２ｂには、ポンプ２０側からジャケット１０側へと力が作用する。これによりポンプ２０は振動し、その振動がジャケット１０に伝達する。ジャケット１０が振動することにより冷却ユニット８全体が振動する。また、ジャケット１０内の冷媒は導入管３２ｂによりチューブ３４内へと導入され、チューブ３４内の冷媒は排出管３２ａからジャケット１０へ排出される。このような冷媒の移動によっても、ジャケット１０は振動する。このように、吸引管２２ａ、吐出管２２ｂ、排出管３２ａ、導入管３２ｂは、ジャケット１０の振動の発生源となる。   Here, the vibration of the cooling unit 8 will be described. The pump 20 sucks the refrigerant from the suction pipe 22a and discharges the refrigerant from the discharge pipe 22b. That is, a force acts on the suction pipe 22a from the jacket 10 side to the pump 20 side, and a force acts on the discharge pipe 22b from the pump 20 side to the jacket 10 side. As a result, the pump 20 vibrates and the vibration is transmitted to the jacket 10. When the jacket 10 vibrates, the entire cooling unit 8 vibrates. The refrigerant in the jacket 10 is introduced into the tube 34 through the introduction pipe 32b, and the refrigerant in the tube 34 is discharged from the discharge pipe 32a to the jacket 10. The jacket 10 also vibrates by such movement of the refrigerant. Thus, the suction tube 22a, the discharge tube 22b, the discharge tube 32a, and the introduction tube 32b are sources of vibration of the jacket 10.

しかしながら、図３、図５に例示するように、排出管３２ａ、導入管３２ｂと、吸引管２２ａ、吐出管２２ｂとは、略同一直線状に位置している。また、排出管３２ａ、導入管３２ｂ、吸引管２２ａ、吐出管２２ｂは、同一方向に沿うように延びている。このため、ジャケット１０の振動の発生源が、略同一直線状に位置していることになる。これにより、吸引管２２ａ、吐出管２２ｂと、排出管３２ａ、導入管３２ｂとが略同一直線状にない場合よりも、吸引管２２ａ、吐出管２２ｂと、排出管３２ａ、導入管３２ｂとが略同一直線状にある場合の方が、ジャケット１０の振動が抑制される。これにより、振動音も抑制される。   However, as illustrated in FIGS. 3 and 5, the discharge pipe 32 a and the introduction pipe 32 b, the suction pipe 22 a, and the discharge pipe 22 b are positioned on substantially the same straight line. Further, the discharge pipe 32a, the introduction pipe 32b, the suction pipe 22a, and the discharge pipe 22b extend along the same direction. For this reason, the generation source of the vibration of the jacket 10 is located in substantially the same straight line. Thereby, the suction tube 22a, the discharge tube 22b, the discharge tube 32a, and the introduction tube 32b are substantially less than the case where the suction tube 22a, the discharge tube 22b, the discharge tube 32a, and the introduction tube 32b are not substantially the same straight line. The vibration of the jacket 10 is suppressed when they are in the same straight line. Thereby, vibration sound is also suppressed.

以上本発明の好ましい一実施形態について詳述したが、本発明は係る特定の実施形態に限定されるものではなく、特許請求の範囲に記載された本発明の要旨の範囲内において、種々の変形・変更が可能である。   The preferred embodiment of the present invention has been described in detail above, but the present invention is not limited to the specific embodiment, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible.

（付記１）
内部に冷媒が流れ、外側にフィンが設けられた扁平状のチューブと、
側面に前記チューブの一端が連通され、該連通部より前記チューブに前記冷媒を導入する導入管と、
側面に前記チューブの他端が連通され、該連通部より前記チューブから前記冷媒を排出する排出管と、を備え、
前記チューブは、前記導入管の連通部に接続され、所定方向に延びた第１延在部と、前記第１延在部と連続した湾曲部と、前記湾曲部と連続して前記第１延在部と向かい合うように延在し前記排出管の連通部に接続された第２延在部と、を含み、
前記導入管及び排出管は、互いに並列し、前記第１又は第２延在部の仮想延長面に沿った方向に並んでいる、ラジエータ。
（付記２）
前記フィンは、前記第１延在部と前記第２延在部との間に設けられている、付記１のラジエータ。
（付記３）
前記チューブを囲う囲い板を備え、
前記フィンは、前記第１延在部と前記第２延在部との間と、前記チューブと前記囲い板との間とに設けられている、付記１のラジエータ。
（付記４）
付記１乃至３のラジエータと、
内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備え
前記ポンプは、前記冷却ジャケット内の前記冷媒を吸引する吸引管と、吸引した前記冷媒を前記冷却ジャケットへ吐出すると共に前記吸引管と並列した吐出管とを備え、
前記導入管及び排出管と、前記吸引管及び吐出管とは、一定の方向に沿うように延びており、略同一直線状にある、冷却ユニット。
（付記５）
付記１乃至３のラジエータと、
内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備えた冷却ユニット。
（付記６）
付記２又は３のラジエータと、
内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、
前記囲い板により囲われた空間に向けて送風する冷却ファンと、を備えた冷却ユニット。
（付記７）
付記４乃至６の何れかの冷却ユニットと、
前記電子部品とを備えた、冷却システム。
（付記８）
付記７の冷却システムを備えた電子機器。
（付記９）
冷媒を放熱するラジエータと、
内部を冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備え、
前記ラジエータは、前記冷却ジャケットから前記冷媒を導入する導入管と、前記冷却ジャケットへ前記冷媒を排出する排出管とを有し、
前記ポンプは、前記冷却ジャケットから前記冷媒を吸引する吸引管と、前記冷却ジャケットへ前記冷媒を吐出する吐出管とを有し、
前記導入管及び排出管と、前記吸引管及び吐出管とは、一定の方向に沿うように延びており、略同一直線状にある、冷却ユニット。 (Appendix 1)
A flat tube with a coolant flowing inside and fins on the outside;
One end of the tube communicates with a side surface, and an introduction tube that introduces the refrigerant into the tube from the communication portion;
The other end of the tube is communicated with a side surface, and a discharge pipe for discharging the refrigerant from the tube through the communicating portion,
The tube is connected to a communication portion of the introduction pipe and extends in a predetermined direction, a bending portion continuous with the first extension portion, and the first extension continuously with the bending portion. A second extending portion extending to face the existing portion and connected to the communicating portion of the discharge pipe,
The radiator, wherein the introduction pipe and the discharge pipe are arranged in parallel with each other and along a virtual extension surface of the first or second extension portion.
(Appendix 2)
The radiator according to appendix 1, wherein the fin is provided between the first extending portion and the second extending portion.
(Appendix 3)
A shroud that surrounds the tube;
The radiator according to appendix 1, wherein the fin is provided between the first extension part and the second extension part and between the tube and the enclosure plate.
(Appendix 4)
Radiators 1 to 3;
A cooling jacket through which the refrigerant flows and transfers heat of the electronic component to the refrigerant;
A pump for circulating the refrigerant between the cooling jacket and the radiator, and the pump discharges the sucked refrigerant to the cooling jacket, a suction pipe for sucking the refrigerant in the cooling jacket, and A discharge pipe in parallel with the suction pipe,
The cooling unit, wherein the introduction tube and the discharge tube, and the suction tube and the discharge tube extend along a certain direction and are substantially in the same straight line.
(Appendix 5)
Radiators 1 to 3;
A cooling jacket through which the refrigerant flows and transfers heat of the electronic component to the refrigerant;
And a pump for circulating the refrigerant between the cooling jacket and the radiator.
(Appendix 6)
Addenda 2 or 3 radiator,
A cooling jacket through which the refrigerant flows and transfers heat of the electronic component to the refrigerant;
A pump for circulating the refrigerant between the cooling jacket and the radiator;
And a cooling fan that blows air toward the space surrounded by the surrounding plate.
(Appendix 7)
The cooling unit according to any one of appendices 4 to 6, and
A cooling system comprising the electronic component.
(Appendix 8)
An electronic device provided with the cooling system according to appendix 7.
(Appendix 9)
A radiator that dissipates the refrigerant;
A cooling jacket through which a refrigerant flows and transfers heat of the electronic component to the refrigerant;
A pump for circulating the refrigerant between the cooling jacket and the radiator,
The radiator has an introduction pipe for introducing the refrigerant from the cooling jacket, and a discharge pipe for discharging the refrigerant to the cooling jacket,
The pump has a suction pipe for sucking the refrigerant from the cooling jacket, and a discharge pipe for discharging the refrigerant to the cooling jacket,
The cooling unit, wherein the introduction tube and the discharge tube, and the suction tube and the discharge tube extend along a certain direction and are substantially in the same straight line.

図１（Ａ）〜図１（Ｃ）は、ノートパソコンの説明図である。1A to 1C are explanatory diagrams of a notebook computer. 図２は、冷却ユニットの斜視図である。FIG. 2 is a perspective view of the cooling unit. 図３は、ジャケットの内部構造の説明図である。FIG. 3 is an explanatory diagram of the internal structure of the jacket. 図４（Ａ）は、ラジエータの側面図であり、図４（Ｂ）は、ラジエータの斜視図である。4A is a side view of the radiator, and FIG. 4B is a perspective view of the radiator. 図５は、ジャケットとポンプとの接続部分周辺の模式図である。FIG. 5 is a schematic view of the periphery of the connection portion between the jacket and the pump.

符号の説明Explanation of symbols

１ ノートパソコン
８ 冷却ユニット
１０ 冷却ジャケット
２０ ポンプ
２２ａ 吸引管
２２ｂ 吐出管
３０ ラジエータ
３２ａ 排出管
３２ｂ 導入管
３４ チューブ
３４ａ、３４ｂ 延在部
３４ｃ 湾曲部
３６ 囲い板 DESCRIPTION OF SYMBOLS 1 Notebook PC 8 Cooling unit 10 Cooling jacket 20 Pump 22a Suction pipe 22b Discharge pipe 30 Radiator 32a Discharge pipe 32b Introduction pipe 34 Tube 34a, 34b Extension part 34c Curved part 36 Enclosure board

Claims (8)

内部に冷媒が流れ、外側にフィンが設けられた扁平状のチューブと、
側面に前記チューブの一端が連通され、該連通部より前記チューブに前記冷媒を導入する導入管と、
側面に前記チューブの他端が連通され、該連通部より前記チューブから前記冷媒を排出する排出管と、を備え、
前記チューブは、前記導入管の連通部に接続され、所定方向に延びた第１延在部と、前記第１延在部と連続した湾曲部と、前記湾曲部と連続して前記第１延在部と向かい合うように延在し前記排出管の連通部に接続された第２延在部と、を含み、
前記導入管及び排出管は、互いに並列し、前記第１又は第２延在部の仮想延長面に沿った方向に並んでいる、ラジエータ。 A flat tube with a coolant flowing inside and fins on the outside;
One end of the tube communicates with a side surface, and an introduction tube that introduces the refrigerant into the tube from the communication portion;
The other end of the tube is communicated with a side surface, and a discharge pipe for discharging the refrigerant from the tube through the communicating portion,
The tube is connected to a communication portion of the introduction pipe and extends in a predetermined direction, a bending portion continuous with the first extension portion, and the first extension continuously with the bending portion. A second extending portion extending to face the existing portion and connected to the communicating portion of the discharge pipe,
The radiator, wherein the introduction pipe and the discharge pipe are arranged in parallel with each other and along a virtual extension surface of the first or second extension portion. 前記フィンは、前記第１延在部と前記第２延在部との間に設けられている、請求項１のラジエータ。   The radiator according to claim 1, wherein the fin is provided between the first extension part and the second extension part. 前記チューブを囲う囲い板を備え、
前記フィンは、前記第１延在部と前記第２延在部との間と、前記チューブと前記囲い板との間とに設けられている、請求項１のラジエータ。 A shroud that surrounds the tube;
The radiator according to claim 1, wherein the fin is provided between the first extending portion and the second extending portion and between the tube and the surrounding plate. 請求項１乃至３のラジエータと、
内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備え
前記ポンプは、前記冷却ジャケット内の前記冷媒を吸引する吸引管と、吸引した前記冷媒を前記冷却ジャケットへ吐出すると共に前記吸引管と並列した吐出管とを備え、
前記導入管及び排出管と、前記吸引管及び吐出管とは、一定の方向に沿うように延びており、略同一直線状にある、冷却ユニット。 A radiator according to claims 1 to 3;
A cooling jacket through which the refrigerant flows and transfers heat of the electronic component to the refrigerant;
A pump for circulating the refrigerant between the cooling jacket and the radiator, and the pump discharges the sucked refrigerant to the cooling jacket, a suction pipe for sucking the refrigerant in the cooling jacket, and A discharge pipe in parallel with the suction pipe,
The cooling unit, wherein the introduction tube and the discharge tube, and the suction tube and the discharge tube extend along a certain direction and are substantially in the same straight line. 請求項１乃至３のラジエータと、
内部を前記冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、を備えた冷却ユニット。 A radiator according to claims 1 to 3;
A cooling jacket through which the refrigerant flows and transfers heat of the electronic component to the refrigerant;
And a pump for circulating the refrigerant between the cooling jacket and the radiator. 請求項２又は３のラジエータと、
内部を冷媒が流通し、電子部品の熱を前記冷媒に伝達する冷却ジャケットと、
前記冷却ジャケットと前記ラジエータとの間で前記冷媒を循環させるポンプと、
前記囲い板により囲われた空間に向けて送風する冷却ファンと、を備えた冷却ユニット。 A radiator according to claim 2 or 3;
A cooling jacket through which a refrigerant flows and transfers heat of the electronic component to the refrigerant;
A pump for circulating the refrigerant between the cooling jacket and the radiator;
And a cooling fan that blows air toward the space surrounded by the surrounding plate. 請求項４乃至６の何れかの冷却ユニットと、
前記電子部品とを備えた、冷却システム。 A cooling unit according to any one of claims 4 to 6;
A cooling system comprising the electronic component. 請求項７の冷却システムを備えた電子機器。   An electronic device comprising the cooling system according to claim 7.
JP2008309925A 2008-12-04 2008-12-04 COOLING UNIT, COOLING SYSTEM, AND ELECTRONIC DEVICE Expired - Fee Related JP5531400B2 (en)

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US12/609,677 US20100139891A1 (en) 2008-12-04 2009-10-30 Radiator and cooling unit
CN2009102258430A CN101749968B (en) 2008-12-04 2009-11-30 Radiator and cooling unit
KR1020090118385A KR101158201B1 (en) 2008-12-04 2009-12-02 Radiator, cooling unit, cooling system and electronic apparatus

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CN101749968A (en) 2010-06-23
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US20100139891A1 (en) 2010-06-10
JP5531400B2 (en) 2014-06-25

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