JP2005268658A - Boiling cooler - Google Patents

Boiling cooler Download PDF

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Publication number
JP2005268658A
JP2005268658A JP2004081381A JP2004081381A JP2005268658A JP 2005268658 A JP2005268658 A JP 2005268658A JP 2004081381 A JP2004081381 A JP 2004081381A JP 2004081381 A JP2004081381 A JP 2004081381A JP 2005268658 A JP2005268658 A JP 2005268658A
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Prior art keywords
refrigerant
wick
cooling device
boiling cooling
heating element
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JP2004081381A
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Japanese (ja)
Inventor
Sho Ishii
焦 石井
Noriyoshi Miyajima
則義 宮嶋
Yoshiyuki Okamoto
義之 岡本
Takashi Ogura
隆史 小倉
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Denso Corp
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Denso Corp
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Priority to JP2004081381A priority Critical patent/JP2005268658A/en
Priority to CNB2005100547974A priority patent/CN100414243C/en
Priority to US11/082,929 priority patent/US20050274496A1/en
Publication of JP2005268658A publication Critical patent/JP2005268658A/en
Pending legal-status Critical Current

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    • 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
    • H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
    • H01L23/427—Cooling by change of state, e.g. use of heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
    • F25B23/006—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect boiling cooling systems
    • 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
    • F28D15/0266—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 separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
    • 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
    • F28D15/046—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 characterised by the material or the construction of the capillary structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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 boiling cooler efficiently cooling a heating element, even when a refrigerant tub is used in a head and tail direction posture in addition to a horizontal direction posture independently of a position of the heating element to the refrigerant tub. <P>SOLUTION: The boiling cooler equipped is with: a refrigerant tub 110 in which a heating element 10 is attached on an external surface of one wall 111 out of two facing walls 111, 112 and refrigerant is stored in an interior thereof; and a radiator 120 which is provided on an external surface of another wall 112 out of two walls 111, 112 and returns the refrigerant to the refrigerant tub 110 after flowing the refrigerant boiled and vaporized by the heating element 10 in an interior thereof and condensing the refrigerant. There is provided, on an interior side of one wall 111, a primary wick 131 from a region where the primary wick 131 serves as a bottom when two walls 111, 112 are used in the head and tail direction posture to a region where the heating element 10 is arranged. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、冷媒の沸騰と凝縮による潜熱移動によって半導体素子等の発熱体を冷却する沸騰冷却装置に関するものである。   The present invention relates to a boiling cooling device that cools a heating element such as a semiconductor element by latent heat transfer caused by boiling and condensation of a refrigerant.

従来の沸騰冷却装置として、例えば特許文献１に示されるものが知られている。即ち、この沸騰冷却装置は、扁平状を成して水平方向配置され、内部に冷媒が貯留される冷媒槽（特許文献１中では冷媒容器）と、この冷媒槽の上側に組付けられる放熱部（特許文献１中では放熱器）とから構成され、冷媒槽の下側には発熱体（半導体素子等）が取付けられる。   As a conventional boiling cooling device, for example, the one shown in Patent Document 1 is known. That is, this boiling cooling device is formed in a flat shape in a horizontal direction, a refrigerant tank (a refrigerant container in Patent Document 1) in which a refrigerant is stored, and a heat radiating unit assembled above the refrigerant tank. (A radiator in Patent Document 1), and a heating element (such as a semiconductor element) is attached to the lower side of the refrigerant tank.

放熱部は、冷媒槽の上側に立設される２本のヘッダと、この２本のヘッダを介して冷媒槽内に連通するチューブとから成り、チューブは冷媒槽に対して傾斜するように設けられている。   The heat radiating section is composed of two headers standing on the upper side of the refrigerant tank and a tube communicating with the refrigerant tank via the two headers, and the tube is provided so as to be inclined with respect to the refrigerant tank. It has been.

この沸騰冷却装置においては、冷媒槽内の冷媒は、発熱体の熱を受けて沸騰気化し、上昇してチューブ内へ流れ込み、チューブ内を流れる際に、外気との熱交換により凝縮し、凝縮液となって冷媒槽に還流する。よって、発熱体から発生した熱が冷媒に伝達されて放熱部で外気に放出されることで発熱体が冷却されることになる。   In this boiling cooling device, the refrigerant in the refrigerant tank is boiled and vaporized by the heat of the heating element, rises and flows into the tube, and condenses and condenses by heat exchange with the outside air when flowing through the tube. It becomes a liquid and returns to the refrigerant tank. Therefore, the heat generated from the heating element is transmitted to the refrigerant and released to the outside air by the heat radiating section, thereby cooling the heating element.

ここでは、チューブ内で凝縮した凝縮冷媒がチューブの傾斜によってスムーズに流れることができ、チューブ内に凝縮冷媒が滞留するのを防止し、冷媒の循環性を向上するようにしている。
特開２００２−２０６８８０号公報 Here, the condensed refrigerant condensed in the tube can flow smoothly due to the inclination of the tube, so that the condensed refrigerant is prevented from staying in the tube and the circulation of the refrigerant is improved.
JP 2002-206880 A

しかしながら、近年、上記のような沸騰冷却装置においては、発熱体の実装密度の向上や各種電子機器への共通使用等のために、冷媒槽を水平方向姿勢に対して、図１１に示す天地方向姿勢での使用も可能となるような要求も出ている。   However, in recent years, in the above-described boiling cooling apparatus, the refrigerant tank is in a vertical direction as shown in FIG. 11 with respect to the horizontal orientation in order to improve the mounting density of the heating elements and to be commonly used for various electronic devices. There is also a demand that can be used in a posture.

特に、天地方向姿勢で発熱体１０が冷媒槽１１０の上側に配置される場合には、それに合わせて冷媒液面を高くする必要があり、放熱部１２０における有効な領域（凝縮領域）が減少して著しく性能が低下する。   In particular, when the heating element 10 is arranged on the upper side of the refrigerant tank 110 in the vertical orientation, it is necessary to raise the refrigerant liquid level accordingly, and the effective area (condensation area) in the heat radiating unit 120 is reduced. Performance is significantly reduced.

本発明の目的は、上記問題に鑑み、冷媒槽に対する発熱体の位置に関わらず、且つ冷媒槽が水平方向姿勢に加えて天地方向姿勢で使用される場合でも、高性能で発熱体の冷却を可能とする沸騰冷却装置を提供することにある。   In view of the above problems, the object of the present invention is to cool the heating element with high performance regardless of the position of the heating element with respect to the refrigerant tank, and even when the refrigerant tank is used in the vertical orientation in addition to the horizontal orientation. An object of the present invention is to provide a boiling cooling device that can be used.

本発明は上記目的を達成するために、以下の技術的手段を採用する。   In order to achieve the above object, the present invention employs the following technical means.

請求項１に記載の発明では、対向する２つの壁部（１１１、１１２）のうち、一方の壁部（１１１）の外表面に発熱体（１０）が取付けられ、内部に冷媒を貯留する冷媒槽（１１０）と、２つの壁部（１１１、１１２）のうち、他方の壁部（１１２）の外表面に設けられ、発熱体（１０）によって沸騰気化した冷媒を内部に流入させて凝縮液化した後に冷媒槽（１１０）に戻す放熱部（１２０）とを備える沸騰冷却装置において、一方の壁部（１１１）の内側面には、２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時に下側となる領域から発熱体（１０）が配置される領域に至る第１のウィック（１３１）が設けられたことを特徴としている。   In the invention according to claim 1, of the two opposing wall portions (111, 112), the heating element (10) is attached to the outer surface of one wall portion (111), and the refrigerant stores the refrigerant therein. Of the tank (110) and the two wall portions (111, 112), provided on the outer surface of the other wall portion (112), the refrigerant boiled and vaporized by the heating element (10) is introduced into the inside to be condensed and liquefied. In the boiling cooling device including the heat radiating portion (120) that is returned to the refrigerant tank (110) after the operation, the two wall portions (111, 112) are oriented in the vertical direction on the inner surface of the one wall portion (111). The first wick (131) extending from the lower region to the region where the heating element (10) is disposed when used in the above is provided.

これにより、２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時に、発熱体（１０）の位置に関わらず冷媒槽（１１０）内部の冷媒液面を低い位置に設定しても、第１のウィック（１３１）の毛細管力によって、一方の壁部（１１１）の内壁面に沿って冷媒を発熱体（１０）の配置される領域まで供給することができる。また、冷媒液面を低くすることで、放熱部（１２０）での冷媒凝縮領域を大きくすることができる。よって、冷媒槽（１１０）内の冷媒を沸騰気化させ、沸騰気化した冷媒を放熱部（１２０）で充分に凝縮液化（凝縮潜熱を大気に放熱）して、再び冷媒槽（１１０）に戻すことで発熱体（１０）の冷却が可能となる。   Thus, when the two wall portions (111, 112) are used in a posture facing the top-and-bottom direction, the refrigerant liquid level inside the refrigerant tank (110) is set to a low position regardless of the position of the heating element (10). Even so, the capillary force of the first wick (131) can supply the refrigerant along the inner wall surface of the one wall portion (111) to the region where the heating element (10) is disposed. Moreover, the refrigerant | coolant condensation area | region in a thermal radiation part (120) can be enlarged by making a refrigerant | coolant liquid level low. Therefore, the refrigerant in the refrigerant tank (110) is boiled and vaporized, and the vaporized refrigerant is sufficiently condensed and liquefied (condensation latent heat is released to the atmosphere) by the heat radiating section (120), and then returned to the refrigerant tank (110) again. Thus, the heating element (10) can be cooled.

尚、２つの壁部（１１１、１１２）が水平方向を向く姿勢とし、発熱体（１０）が冷媒槽（１１０）の下側に配置されるようにした場合は、冷媒は一方の壁部（１１１）の上に貯まる形となるので、容易に冷媒を沸騰気化させ、放熱部（１２０）で充分に凝縮液化させることができる。   In addition, when it is set as the attitude | position in which two wall parts (111,112) face a horizontal direction, and a heat generating body (10) is arrange | positioned under a refrigerant tank (110), a refrigerant | coolant is one wall part ( 111), the refrigerant can be easily evaporated to the boil and sufficiently condensed and liquefied by the heat radiating section (120).

総じて、冷媒槽（１１０）に対する発熱体（１０）の位置に関わらず、且つ冷媒槽（１１０）が水平方向姿勢に加えて天地方向姿勢で使用される場合でも、高性能で発熱体（１０）の冷却を可能とする沸騰冷却装置（１００）とすることができる。   In general, regardless of the position of the heating element (10) with respect to the refrigerant tank (110), and even when the refrigerant tank (110) is used in a vertical orientation in addition to the horizontal orientation, the heating element (10) has high performance. It is possible to provide a boiling cooling device (100) that can cool the water.

そして、放熱部（１２０）は、請求項２に記載の発明のように、他方の壁部（１１２）から立設されて、一端側が前記冷媒槽（１１０）内に連通する一対のヘッダ（１２１、１２２）と、一対のヘッダ（１２１、１２２）間で２つの壁部（１１１、１１２）に略平行に配置されて、一対のヘッダ（１２１、１２２）内に連通する１以上のチューブ（１２３ａ）とから形成することができる。   And the heat radiating part (120) is erected from the other wall part (112) as in the invention described in claim 2, and has a pair of headers (121) whose one end side communicates with the refrigerant tank (110). 122) and one or more tubes (123a) that are arranged substantially parallel to the two wall portions (111, 112) between the pair of headers (121, 122) and communicate with the pair of headers (121, 122). ).

また、放熱部（１２０）は、請求項３に記載の発明のように、他方の壁部（１１２）から立設されて、一端側が冷媒槽（１１０）内に連通する複数のチューブ（１２３ｂ）と、複数のチューブ（１２３ｂ）の他端側で接続されて、複数のチューブ（１２３ｂ）同士を連通させる連通ヘッダ（１２５）とから形成するようにしても良い。   Further, as in the invention described in claim 3, the heat dissipating part (120) is erected from the other wall part (112) and has a plurality of tubes (123b) whose one end side communicates with the refrigerant tank (110). And a communication header (125) that is connected on the other end side of the plurality of tubes (123b) and allows the plurality of tubes (123b) to communicate with each other.

通常、２つの壁部（１１１、１１２）が拡がる方向の寸法は、放熱部（１２０）における２つの壁部（１１１、１１２）が対向する方向の寸法より大きく設定される場合が多く、このような場合では、２つの壁部（１１１、１１２）が拡がる方向にチューブ（１２３ｂ）を複数配置することで、冷媒の流路断面積を拡大して、冷媒の流通抵抗を低減することができるので、冷媒の循環を促進して冷却性能を向上させることができる。   Usually, the dimension in the direction in which the two wall parts (111, 112) expand is often set larger than the dimension in the direction in which the two wall parts (111, 112) in the heat dissipating part (120) face each other. In such a case, by arranging a plurality of tubes (123b) in the direction in which the two wall portions (111, 112) expand, the flow passage cross-sectional area of the refrigerant can be expanded and the flow resistance of the refrigerant can be reduced. The cooling performance can be improved by promoting the circulation of the refrigerant.

請求項４に記載の発明では、２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時の冷媒槽（１１０）内の下側領域には、第２のウィック（１３２）が設けられたことを特徴としている。   In the invention according to claim 4, the second wick (132) is provided in the lower region in the refrigerant tank (110) when the two wall portions (111, 112) are used in a posture facing the vertical direction. Is featured.

これにより、第２のウィック（１３２）の毛細管力によって、放熱部（１２０）側の冷媒を冷媒槽（１１０）側に引っ張ることができ、放熱部（１２０）における冷媒液面を下げて凝縮領域を大きくできるので、冷却性能を向上させることができる。   Thereby, the refrigerant | coolant by the side of a thermal radiation part (120) can be pulled to the refrigerant | coolant tank (110) side by the capillary force of a 2nd wick (132), the refrigerant | coolant liquid level in a thermal radiation part (120) is lowered | hung, and a condensation area | region Therefore, the cooling performance can be improved.

請求項５に記載の発明では、第２のウィック（１３２）は、第１のウィック（１３１）よりも多孔質構造が粗と成るように形成されたことを特徴としている。   The invention according to claim 5 is characterized in that the second wick (132) is formed so as to have a coarser porous structure than the first wick (131).

第２のウィック（１３２）においては、放熱部（１２０）側の冷媒を冷媒槽（１１０）側に引っ張るだけの毛細管力があれば事足りるため、第１のウィック（１３１）に比べて大きな毛細管力を必要としないことから、多孔質構造を粗にすることができる訳であり、この分、冷媒が流通する際の流通抵抗を低減することができるので、冷媒の循環をスムーズにして、冷却性能を向上させることができる。   In the second wick (132), a capillary force sufficient to pull the refrigerant on the heat radiating portion (120) side to the refrigerant tank (110) side is sufficient, and therefore a larger capillary force than the first wick (131) is required. Therefore, the porous structure can be roughened, and the flow resistance when the refrigerant flows can be reduced accordingly. Can be improved.

請求項６に記載の発明では、第２のウィック（１３２）は、第１のウィック（１３１）に一体的に形成されたことを特徴としており、これにより、部品点数を低減し、組付けを容易にして、安価な対応ができる。   The invention according to claim 6 is characterized in that the second wick (132) is formed integrally with the first wick (131), thereby reducing the number of parts and assembling. Easily and inexpensively.

請求項７に記載の発明では、第２のウィック（１３２）は、発熱体（１０）が配置される領域近傍まで延びるように形成されたことを特徴としている。   The invention according to claim 7 is characterized in that the second wick (132) is formed so as to extend to the vicinity of the region where the heating element (10) is arranged.

これにより、第１のウィック（１３１）に加えて、第２のウィック（１３２）によっても冷媒を発熱体（１０）の領域に供給することができるので、その分、発熱体（１０）による沸騰を促進させ、冷媒の循環量を増加させて、冷却性能を向上させることができる。   Thereby, in addition to the first wick (131), the second wick (132) can also supply the refrigerant to the region of the heating element (10). Can be promoted, the circulation amount of the refrigerant can be increased, and the cooling performance can be improved.

請求項８に記載の発明では、２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時の冷媒槽（１１０）内の冷媒の液面より上側と成る領域には、第１のウィック（１３１）を貫通させつつ、冷媒槽（１１０）内を上側と下側とに区切る隔壁（１１３）が設けられたことを特徴としている。   In the invention according to claim 8, in the region above the coolant level in the coolant tank (110) when the two wall portions (111, 112) are used in a posture facing the top-and-bottom direction, A partition wall (113) that divides the refrigerant tank (110) into an upper side and a lower side while passing through one wick (131) is provided.

これにより、冷媒槽（１１０）内の沸騰冷媒の圧力（ＰＡ）が冷媒槽（１１０）の液冷媒に作用しないようにして、放熱部（１２０）内の冷媒液面の上昇を防止することができるので、放熱部（１２０）の凝縮領域を大きくして、冷却性能を向上さることができる。   This prevents the pressure (PA) of the boiling refrigerant in the refrigerant tank (110) from acting on the liquid refrigerant in the refrigerant tank (110) and prevents the refrigerant liquid level in the heat radiating section (120) from rising. Therefore, the condensation area of the heat dissipating part (120) can be increased to improve the cooling performance.

請求項２に記載の発明において、請求項９に記載の発明では、一対のヘッダ（１２１、１２２）の一方（１２２）には、このヘッダ（１２２）の反冷媒槽側の先端部から第１のウィック（１３１）に繋がる第３のウィック（１３３）が設けられたことを特徴としている。   In the invention according to claim 2, in the invention according to claim 9, the first (122) of the pair of headers (121, 122) is a first from the tip of the header (122) on the side opposite to the refrigerant tank. The third wick (133) connected to the wick (131) is provided.

これにより、冷媒槽（１１０）を水平方向姿勢として、且つ、発熱体（１０）が冷媒槽（１１０）の上側になるようにして使用する場合でも、放熱部（１２０）の下側に貯まる冷媒を第３のウィック（１３３）の毛細管力によって第１のウィック（１３１）を介して発熱体（１０）に供給することができるので、発熱体（１０）の冷却を可能とする沸騰冷却装置（１００）とすることができる。   Accordingly, even when the refrigerant tank (110) is used in a horizontal orientation and the heating element (10) is located above the refrigerant tank (110), the refrigerant is stored below the heat radiating portion (120). Can be supplied to the heating element (10) via the first wick (131) by the capillary force of the third wick (133), so that the boiling cooling device ( 100).

請求項３に記載の発明において、請求項１０に記載の発明では、複数のチューブ（１２３ｂ）のいずれかには、連通ヘッダ（１２５）側から第１のウィック（１３１）に繋がる第４のウィック（１３４）が設けられたことを特徴としている。   In the invention according to claim 3, in the invention according to claim 10, any one of the plurality of tubes (123b) includes a fourth wick connected to the first wick (131) from the communication header (125) side. (134) is provided.

これにより、請求項９に記載の発明と同様に、冷媒槽（１１０）を水平方向姿勢として、且つ、発熱体（１０）が冷媒槽（１１０）の上側になるようにして使用する場合でも、放熱部（１２０）の下側に貯まる冷媒を第４のウィック（１３４）の毛細管力によって第１のウィック（１３１）を介して発熱体（１０）に供給することができるので、発熱体（１０）の冷却を可能とする沸騰冷却装置（１００）とすることができる。   Thereby, similarly to the invention described in claim 9, even when the refrigerant tank (110) is used in a horizontal orientation and the heating element (10) is located above the refrigerant tank (110), Since the refrigerant stored under the heat radiating section (120) can be supplied to the heating element (10) via the first wick (131) by the capillary force of the fourth wick (134), the heating element (10 ) Is a boiling cooling device (100) that enables cooling.

尚、上記各手段の括弧内の符号は、後述する実施形態記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with the specific means of embodiment description mentioned later.

（第１実施形態）
本発明の沸騰冷却装置１００における第１実施形態を図１、図２に示す。図１は、冷媒槽１１０を天地方向（以下、垂直方向と呼ぶ）姿勢とした場合の沸騰冷却装置１００を示す断面図、図２は、冷媒槽１１０を水平方向姿勢とした場合の沸騰冷却装置１００を示す断面図である。 (First embodiment)
1 and 2 show a first embodiment of the boiling cooling device 100 of the present invention. FIG. 1 is a cross-sectional view showing a boiling cooling device 100 when the refrigerant tank 110 is in a vertical direction (hereinafter referred to as a vertical direction), and FIG. 2 is a boiling cooling device when the refrigerant tank 110 is in a horizontal posture. FIG.

沸騰冷却装置１００は、半導体素子等の発熱体１０を冷却するようにしたもので、冷媒槽１１０と放熱部１２０とから構成されている。そして、以下説明する各部材は、銅材あるいは銅系材より成り、各部材間で接合される部位に施されたろう材により一体でろう付けされている。   The boiling cooling device 100 is configured to cool the heating element 10 such as a semiconductor element, and includes a refrigerant tank 110 and a heat radiating unit 120. Each member described below is made of a copper material or a copper-based material, and is brazed integrally with a brazing material applied to a portion joined between the members.

まず、冷媒槽１１０は、扁平箱状を成す容器であり、対向する受熱壁（本発明における一方の壁部に対応）１１１と、放熱壁（本発明における他方の壁部に対応）１１２とを有している。そして、図１に示すように、受熱壁１１１、放熱壁１１２を垂直方向姿勢とした場合の受熱壁１１１の上側には発熱体１０が図示しないボルト等の締め付けにより固定されている。ここで、発熱体１０と受熱壁１１１との間の接触熱抵抗を小さくするために、両者間に熱伝導グリースを介在させても良い。   First, the refrigerant tank 110 is a container having a flat box shape, and includes an opposing heat receiving wall (corresponding to one wall portion in the present invention) 111 and a heat radiating wall (corresponding to the other wall portion in the present invention) 112. Have. And as shown in FIG. 1, the heat generating body 10 is being fixed to the upper side of the heat receiving wall 111 at the time of making the heat receiving wall 111 and the heat radiating wall 112 into a vertical attitude | position by fastening | tightening the bolt etc. which are not shown in figure. Here, in order to reduce the contact thermal resistance between the heating element 10 and the heat receiving wall 111, thermal conductive grease may be interposed therebetween.

放熱部１２０は、２本のヘッダ１２１、１２２内に連通する複数本の放熱チューブ（本発明における１以上のチューブに対応）１２３ａと、各放熱チューブ１２３ａ間に介在される放熱フィン１２４とから構成される。２本のヘッダ１２１、１２２は、それぞれ冷媒槽１１０の両端側（図１中の上側と下側）で放熱壁１１２から略直立して組付けられ、冷媒槽１１０の内部空間と連通して設けられている。放熱チューブ１２３ａは、放熱壁１１２と略平行に配列され、２本のヘッダ１２１、１２２を介して冷媒槽１１０の内部空間と連通している。放熱フィン１２４は、周知のコルゲートフィンであり、放熱面積を増大させるために使用される。   The heat dissipating part 120 includes a plurality of heat dissipating tubes (corresponding to one or more tubes in the present invention) 123a communicating with the two headers 121 and 122, and heat dissipating fins 124 interposed between the heat dissipating tubes 123a. Is done. The two headers 121 and 122 are assembled so as to be substantially upright from the heat radiating wall 112 on both ends (upper and lower sides in FIG. 1) of the refrigerant tank 110, and are provided in communication with the internal space of the refrigerant tank 110. It has been. The heat radiating tube 123 a is arranged substantially in parallel with the heat radiating wall 112, and communicates with the internal space of the refrigerant tank 110 through the two headers 121 and 122. The heat radiating fins 124 are well-known corrugated fins and are used to increase the heat radiating area.

そして、本発明の特徴部として冷媒槽１１０の受熱壁１１１の内側面には、受熱壁１１１（冷媒槽１１０）の下側となる領域から発熱体１０が配置される領域に至るウィック（本発明における第１のウィックに対応）１３１を設けるようにしている。尚、ここでは、受熱壁１１１の垂直方向の両端部のどちらが下側になっても上記の条件を満足するように、ウィック１３１は、受熱壁１１１の両端部側（図１中の上側と下側）から発熱体１０の領域に至るように設けている。因みに、ウィック１３１は、周知のように、金網、金属製フェルト、焼結金属等から成る多孔質部材であり、本実施形態では、銅製の焼結金属を用いている。   As a characteristic part of the present invention, the inner surface of the heat receiving wall 111 of the refrigerant tank 110 has a wick extending from a region below the heat receiving wall 111 (refrigerant tank 110) to a region where the heating element 10 is disposed (the present invention). 131 corresponding to the first wick in FIG. In this case, the wick 131 is arranged on both end sides of the heat receiving wall 111 (upper side and lower side in FIG. 1) so that the above condition is satisfied regardless of which of the both ends in the vertical direction of the heat receiving wall 111 is on the lower side. Side) to the region of the heating element 10. Incidentally, as is well known, the wick 131 is a porous member made of a wire mesh, a metal felt, a sintered metal, or the like. In this embodiment, a sintered metal made of copper is used.

そして、真空引きされた沸騰冷却装置１００の内部空間には、所定量の冷媒が封入されている。冷媒は、ここでは水を使用しており、封入量としては、冷媒槽１１０の容積以下となるようにしている。冷媒（水）の沸点は、通常（一気圧で）１００℃であるが、沸騰冷却装置１００内を真空引きしているため、沸点は、３０〜４０℃となっている。尚、冷媒としては、水の他にアルコール、フロロカーボン、フロン等を用いても良い。   A predetermined amount of refrigerant is sealed in the internal space of the evacuated boiling cooling apparatus 100. Here, water is used as the refrigerant, and the amount of the enclosed liquid is set to be equal to or less than the volume of the refrigerant tank 110. The boiling point of the refrigerant (water) is usually 100 ° C. (at one atmospheric pressure), but since the inside of the boiling cooling device 100 is evacuated, the boiling point is 30 to 40 ° C. As the refrigerant, alcohol, fluorocarbon, chlorofluorocarbon or the like may be used in addition to water.

次に、上記構成に基づく沸騰冷却装置１００の作動および作用効果について説明する。   Next, the operation and effect of the boiling cooling device 100 based on the above configuration will be described.

まず、冷媒槽１１０の受熱壁１１１、放熱壁１１２を垂直方向にして用いた場合（図１）、沸騰冷却装置１００内の冷媒は、冷媒槽１１０、放熱チューブ１２３ａの下側およびヘッダ１２２に貯まる形となり、その液面は発熱体１０よりも低い位置と成るが、この冷媒は、ウィック１３１の毛細管力によって吸い上げられ、発熱体１０の領域に供給されることになる。   First, when the heat receiving wall 111 and the heat radiating wall 112 of the refrigerant tank 110 are used in a vertical direction (FIG. 1), the refrigerant in the boiling cooling device 100 is stored in the refrigerant tank 110, the lower side of the heat radiating tube 123a, and the header 122. The liquid level is lower than that of the heating element 10, but the refrigerant is sucked up by the capillary force of the wick 131 and supplied to the area of the heating element 10.

そして、この冷媒は発熱体１０から受熱して沸騰気化し、冷媒槽１１０内を上昇し、一方のヘッダ１２１内に流れ込み（図１中の破線）、そのヘッダ１２１から各放熱チューブ１２３ａに分散して流れる。放熱チューブ１２３ａ内へ流入した冷媒蒸気は、この放熱チューブ１２３ａ内を流れる際に、例えば図示しない送風手段から供給される冷却風を受けて冷却され、凝縮液となって他方のヘッダ１２２から冷媒槽１１０へと還流する（図１中の実線）。   Then, this refrigerant receives heat from the heating element 10 and evaporates, rises in the refrigerant tank 110, flows into one header 121 (broken line in FIG. 1), and is dispersed from the header 121 to each heat radiating tube 123a. Flowing. When the refrigerant vapor that has flowed into the heat radiating tube 123a flows through the heat radiating tube 123a, the refrigerant vapor is cooled by receiving cooling air supplied from, for example, a blowing means (not shown), and becomes a condensed liquid from the other header 122. Reflux to 110 (solid line in FIG. 1).

このように、発熱体１０から発生した熱が冷媒に伝達されて放熱部１２０へ輸送され、この放熱部１２０で冷媒蒸気が凝縮する際に凝縮潜熱として放出され、放熱フィン１２４を介して外気（冷却風）に放熱される。即ち、発熱体１０から発生した熱が冷媒に伝達されて放熱部１２０で外気に放出されることで発熱体１０が冷却される訳である。   In this way, the heat generated from the heating element 10 is transmitted to the refrigerant and transported to the heat radiating unit 120, and is released as condensation latent heat when the refrigerant vapor condenses in the heat radiating unit 120, and the outside air ( Heat is dissipated to the cooling air). That is, the heat generated from the heating element 10 is transmitted to the refrigerant and released to the outside air by the heat radiating unit 120, thereby cooling the heating element 10.

本発明においては、２つの壁部１１１、１１２が垂直方向を向く姿勢で使用される時に、発熱体１０の位置に関わらず冷媒槽１１０内部の冷媒液面を発熱体１０より低い位置に設定しても、上記したようにウィック１３１の毛細管力によって、受熱壁１１１の内壁面に沿って冷媒を発熱体１０の配置される領域まで供給することができる。また、冷媒液面を低くすることで、従来技術の項で説明した図１１に比較して、放熱部１２０での冷媒凝縮領域を大きくすることができる。よって、冷媒槽１１０内の冷媒を沸騰気化させ、沸騰気化した冷媒を放熱部１２０で充分に凝縮液化（凝縮潜熱を大気に放熱）して、再び冷媒槽１１０に戻すことで発熱体１０の冷却が可能となる。   In the present invention, when the two wall portions 111 and 112 are used in a vertical orientation, the refrigerant liquid level in the refrigerant tank 110 is set at a lower position than the heating element 10 regardless of the position of the heating element 10. However, as described above, the refrigerant can be supplied to the region where the heating element 10 is disposed along the inner wall surface of the heat receiving wall 111 by the capillary force of the wick 131. Further, by lowering the coolant level, the coolant condensing region in the heat dissipating unit 120 can be increased as compared with FIG. 11 described in the section of the prior art. Therefore, the refrigerant in the refrigerant tank 110 is boiled and vaporized, and the boiled and vaporized refrigerant is sufficiently condensed and liquefied by the heat dissipating unit 120 (condensation latent heat is released to the atmosphere) and returned to the refrigerant tank 110 again to cool the heating element 10. Is possible.

尚、図２に示すように、放熱部１２０が上を向くように冷媒槽１１０の受熱壁１１１、放熱壁１１２を水平方向にして用いた場合は、冷媒は冷媒槽１１０内で受熱壁１１１の上に貯まる形となるので、容易に冷媒を沸騰気化させ、放熱部１２０で充分に凝縮液化させることができる。   As shown in FIG. 2, when the heat receiving wall 111 and the heat radiating wall 112 of the refrigerant tank 110 are used in a horizontal direction so that the heat dissipating part 120 faces upward, the refrigerant is contained in the heat receiving wall 111 in the refrigerant tank 110. Since it is stored in the upper shape, the refrigerant can be easily boiled and vaporized sufficiently by the heat dissipating unit 120.

総じて、冷媒槽１１０に対する発熱体１０の位置に関わらず、且つ冷媒槽１１０が水平方向姿勢に加えて垂直方向姿勢で使用される場合でも、高性能で発熱体１０の冷却を可能とする沸騰冷却装置１００とすることができる。   In general, regardless of the position of the heating element 10 with respect to the refrigerant tank 110, and even when the refrigerant tank 110 is used in a vertical position in addition to a horizontal position, boiling cooling that enables the heating element 10 to be cooled with high performance. Device 100 may be provided.

尚、変形例１として放熱部１２０については、図３に示すように、放熱壁１１２から立設されて、一端側が冷媒槽１１０内に連通する複数のチューブ１２３ｂと、これら複数のチューブ１２３ｂの他端側で接続されて、複数のチューブ１２３ｂ同士を連通させる連通ヘッダ１２５とから成るものとしても良い。   In addition, as shown in FIG. 3, as the first modification, the heat radiating unit 120 is erected from the heat radiating wall 112 and has one end side communicating with the inside of the refrigerant tank 110, and other than the plurality of tubes 123 b. It is good also as what consists of the communication header 125 connected by the end side and making the some tube 123b communicate.

通常、２つの壁部１１１、１１２が拡がる方向（図３中の上下方向）の寸法は、放熱部１２０における２つの壁部１１１、１１２が対向する方向（図３中の左右方向）の寸法より大きく設定される場合が多く、このような場合では、上下方向に放熱チューブ１２３ｂを複数配置することで、冷媒の流路断面積を拡大して、冷媒の流通抵抗を低減することができるので、冷媒の循環を促進して冷却性能を向上させることができる。   Usually, the dimension in the direction in which the two wall parts 111 and 112 expand (up and down direction in FIG. 3) is larger than the dimension in the direction in which the two wall parts 111 and 112 face each other in the heat radiating part 120 (left and right direction in FIG. 3) In many cases, it is set large, and in such a case, by disposing a plurality of heat dissipating tubes 123b in the vertical direction, the flow passage cross-sectional area of the refrigerant can be expanded and the flow resistance of the refrigerant can be reduced. Cooling performance can be improved by promoting circulation of the refrigerant.

（第２実施形態）
本発明の第２実施形態を図４、図５に示す。第２実施形態は、上記第１実施形態に対して、ウィック（本発明における第２のウィックに対応）１３２を追加したものである。 (Second Embodiment)
A second embodiment of the present invention is shown in FIGS. The second embodiment is obtained by adding a wick (corresponding to the second wick in the present invention) 132 to the first embodiment.

ウィック１３２は、図４に示すように、２つの壁部１１１、１１２が垂直方向を向く姿勢で使用される時の冷媒槽１１０内の下側領域に配置されるようにしている。そして、ウィック１３２は、ウィック１３１に対して多孔質構造が粗（形成される孔が大きい）と成るようにしている。   As shown in FIG. 4, the wick 132 is arranged in a lower region in the refrigerant tank 110 when the two wall portions 111 and 112 are used in a posture in which they are oriented in the vertical direction. The wick 132 has a coarser porous structure (larger holes are formed) than the wick 131.

沸騰冷却装置１００においては、発熱体１０の発熱に伴って冷媒の沸騰が促進され、冷媒循環量が増加する。すると、放熱チューブ１２３ａにおける冷媒の流通抵抗が増大し（冷媒の圧力損失が増大し）、図５に示すように、冷媒槽１１０内のＡ点における圧力ＰＡに対して、放熱チューブ１２３ａ内のＢ点の圧力ＰＢが低下し（圧力ＰＡ＞圧力ＰＢ）、冷媒液にヘッド差ｈが生じる。即ち、凝縮領域が減少してしまう。   In the boiling cooling device 100, the boiling of the refrigerant is promoted with the heat generation of the heating element 10, and the refrigerant circulation amount is increased. Then, the flow resistance of the refrigerant in the heat radiating tube 123a increases (the pressure loss of the refrigerant increases), and as shown in FIG. 5, B in the heat radiating tube 123a with respect to the pressure PA at point A in the refrigerant tank 110. The point pressure PB decreases (pressure PA> pressure PB), and a head difference h occurs in the refrigerant liquid. That is, the condensation area is reduced.

しかしながら、本第２実施形態では、ウィック１３２の毛細管力によって、放熱部１２０側の冷媒を冷媒槽１１０側に引っ張ることができるので、放熱部１２０における冷媒液面を下げて凝縮領域を大きくして、冷却性能を向上させることができる。   However, in the second embodiment, the capillary force of the wick 132 can pull the refrigerant on the heat radiating unit 120 side to the refrigerant tank 110 side, so the refrigerant liquid level in the heat radiating unit 120 is lowered to enlarge the condensation region. , Cooling performance can be improved.

また、ウィック１３２においては、放熱部１２０側の冷媒を冷媒槽１１０側に引っ張るだけの毛細管力があれば事足りるため、ウィック１３１に比べて大きな毛細管力を必要としないことから、多孔質構造を粗にすることができる訳であり、この分、冷媒が流通する際の流通抵抗を低減することができるので、冷媒の循環をスムーズにして、冷却性能を向上させることができる。   In addition, in the wick 132, it is sufficient that there is a capillary force sufficient to pull the refrigerant on the heat radiating unit 120 side to the refrigerant tank 110 side, so that a large capillary force is not required compared to the wick 131. Since the flow resistance when the refrigerant flows can be reduced by this amount, the refrigerant can be smoothly circulated and the cooling performance can be improved.

尚、第２実施形態の変形例２として図６に示すように、ウィック１３２は、ウィック１３１と一体に形成するようにしても良く、これにより、部品点数を低減し、組付けを容易にして、安価な対応ができる。ここで、ウィック１３１と１３２の一体化に当っては、上記で説明したように、ウィック１３２を多孔質構造が粗となるものとして、両ウィック１３１、１３２を焼結によって一体化させたものとしても良い。   As shown in FIG. 6 as a second modification of the second embodiment, the wick 132 may be formed integrally with the wick 131, thereby reducing the number of parts and facilitating assembly. Can be cheap. Here, in integrating the wicks 131 and 132, as described above, it is assumed that the wick 132 has a rough porous structure and the wicks 131 and 132 are integrated by sintering. Also good.

また、変形例３として図７に示すように、ウィック１３２は、発熱体１０が配置される領域まで延ばすようにしても良く、これにより、ウィック１３１に加えて、ウィック１３２によっても冷媒を発熱体１０の領域に供給することができるので、その分、発熱体１０による沸騰を促進させ、冷媒の循環量を増加させて、冷却性能を向上させることができる。   Further, as shown in FIG. 7 as a third modification, the wick 132 may be extended to a region where the heating element 10 is disposed, and thereby the refrigerant is also generated by the wick 132 in addition to the wick 131. Since it can supply to 10 area | regions, the boiling by the heat generating body 10 can be accelerated | stimulated by that much, the circulation amount of a refrigerant | coolant can be increased, and cooling performance can be improved.

（第３実施形態）
本発明の第３実施形態を図８に示す。第３実施形態は、上記第２実施形態に対して、隔壁１１３によって、冷媒液のヘッド差ｈを低減するようにしたものである。 (Third embodiment)
A third embodiment of the present invention is shown in FIG. In the third embodiment, the head difference h of the refrigerant liquid is reduced by the partition wall 113 as compared with the second embodiment.

隔壁１１３は、２つの壁部１１１、１１２が垂直方向を向く姿勢で使用される時の冷媒槽１１０内の冷媒の液面より上側となる領域に、ウィック１３１を貫通させつつ、冷媒槽１１０内を上側と下側とに区切るように配設されている。   The partition wall 113 is disposed in the refrigerant tank 110 while penetrating the wick 131 into a region above the liquid level of the refrigerant in the refrigerant tank 110 when the two wall portions 111 and 112 are used in a posture in which they are oriented in the vertical direction. Is arranged to be divided into an upper side and a lower side.

これにより、冷媒槽１１０内の沸騰冷媒の圧力ＰＡが冷媒槽１１０の液冷媒に作用しないようにして、放熱部１２０（放熱チューブ１２３ａ）内の冷媒液面の上昇を防止することができるので、放熱部１２０の凝縮領域を大きくして、冷却性能を向上さることができる。   Thereby, the pressure PA of the boiling refrigerant in the refrigerant tank 110 does not act on the liquid refrigerant in the refrigerant tank 110, and the rise of the refrigerant liquid level in the heat radiating unit 120 (heat radiating tube 123a) can be prevented. The condensation area of the heat dissipating unit 120 can be increased to improve the cooling performance.

（第４実施形態）
本発明の第４実施形態を図９に示す。第４実施形態は、冷媒槽１１０が上記第１実施形態〜第３実施形態に対して、更に異なる姿勢で使用される場合でも発熱体１０の冷却を可能とするようにしたものである。 (Fourth embodiment)
A fourth embodiment of the present invention is shown in FIG. In the fourth embodiment, the heat generating body 10 can be cooled even when the refrigerant tank 110 is used in a different posture from the first to third embodiments.

ここでは、ヘッダ１２２内に、このヘッダ１２２の反冷媒槽側の先端部からのウィック１３１に繋がるウィック（本発明における第３のウィックに対応）１３３を設けるようにしている。   Here, a wick (corresponding to the third wick in the present invention) 133 connected to the wick 131 from the tip of the header 122 on the side opposite to the refrigerant tank is provided in the header 122.

これにより、冷媒槽１１０を水平方向姿勢として、且つ、発熱体１０が冷媒槽１１０の上側になるようにして使用する場合でも、放熱部１２０の下側に貯まる冷媒をウィック１３３の毛細管力によってウィック１３１を介して発熱体１０に供給することができるので、発熱体１０の冷却を可能とする沸騰冷却装置１００とすることができる。   Accordingly, even when the refrigerant tank 110 is used in a horizontal orientation and the heating element 10 is located above the refrigerant tank 110, the refrigerant stored under the heat radiating unit 120 is wicked by the capillary force of the wick 133. Since it can supply to the heat generating body 10 via 131, it can be set as the boiling cooling device 100 which enables the heat generating body 10 to be cooled.

尚、放熱部１２０を複数の放熱チューブ１２３ｂと連通ヘッダ１２５から成るものとした場合は、変形例４として図１０に示すように、複数のチューブ１２３ｂのいずれか（ここでは図中右側のチューブ１２３ｂ）に、連通ヘッダ１２５側からウィック１３１に繋がるウィック（本発明における第４のウィックに対応）１３４を設けてやれば良く、これにより、上記と同様の効果を得ることができる。   When the heat dissipating part 120 is composed of a plurality of heat dissipating tubes 123b and a communication header 125, as shown in FIG. 10 as a modified example 4, any one of the plural tubes 123b (here, the right tube 123b in the figure). ) May be provided with a wick (corresponding to the fourth wick in the present invention) 134 connected to the wick 131 from the communication header 125 side, whereby the same effect as described above can be obtained.

第１実施形態における沸騰冷却装置の冷媒槽を垂直方向姿勢で用いる場合を示す断面図である。It is sectional drawing which shows the case where the refrigerant tank of the boiling cooling device in 1st Embodiment is used with a vertical direction attitude | position. 第１実施形態における沸騰冷却装置の冷媒槽を水平方向姿勢で用いる場合を示す断面図である。It is sectional drawing which shows the case where the refrigerant tank of the boiling cooling device in 1st Embodiment is used in a horizontal direction attitude | position. 第１実施形態における沸騰冷却装置の変形例１を示す断面図である。It is sectional drawing which shows the modification 1 of the boiling cooling device in 1st Embodiment. 第２実施形態における沸騰冷却装置の冷媒槽を垂直方向姿勢で用いる場合を示す断面図である。It is sectional drawing which shows the case where the refrigerant tank of the boiling cooling device in 2nd Embodiment is used with a vertical direction attitude | position. 沸騰冷却装置に生じる冷媒液のヘッド差を示す断面図である。It is sectional drawing which shows the head difference of the refrigerant liquid which arises in a boiling cooling device. 第２実施形態における沸騰冷却装置の変形例２を示す断面図である。It is sectional drawing which shows the modification 2 of the boiling cooling device in 2nd Embodiment. 第２実施形態における沸騰冷却装置の変形例３を示す断面図である。It is sectional drawing which shows the modification 3 of the boiling cooling device in 2nd Embodiment. 第３実施形態における沸騰冷却装置の冷媒槽を垂直方向姿勢で用いる場合を示す断面図である。It is sectional drawing which shows the case where the refrigerant tank of the boiling cooling device in 3rd Embodiment is used with a vertical direction attitude | position. 第４実施形態における沸騰冷却装置の冷媒槽を水平方向姿勢とし、発熱体を上側にして用いる場合を示す断面図である。It is sectional drawing which shows the case where it uses a refrigerant | coolant tank of the boiling cooling device in 4th Embodiment as a horizontal direction attitude | position, and makes a heat generating body upper side. 第４実施形態における沸騰冷却装置の変形例４を示す断面図である。It is sectional drawing which shows the modification 4 of the boiling cooling device in 4th Embodiment. 従来技術における沸騰冷却装置の冷媒槽を垂直方向姿勢で用いる場合を示す断面図である。It is sectional drawing which shows the case where the refrigerant tank of the boiling-cooling apparatus in a prior art is used with an orthogonal | vertical direction attitude | position.

符号の説明Explanation of symbols

１０ 発熱体
１００ 沸騰冷却装置
１１０ 冷媒槽
１１１ 受熱壁（一方の壁部）
１１２ 放熱壁（他方の壁部）
１１３ 隔壁
１２０ 放熱部
１２１、１２２ ヘッダ
１２３ａ 放熱チューブ（１以上のチューブ）
１２３ｂ 放熱チューブ（複数のチューブ）
１２５ 連通ヘッダ
１３１ ウィック（第１のウィック）
１３２ ウィック（第２のウィック）
１３３ ウィック（第３のウィック）
１３４ ウィック（第４のウィック） DESCRIPTION OF SYMBOLS 10 Heat generating body 100 Boiling cooler 110 Refrigerant tank 111 Heat receiving wall (one wall part)
112 Heat dissipation wall (the other wall)
113 Partition 120 Heat radiating part 121, 122 Header 123a Heat radiating tube (one or more tubes)
123b Heat dissipation tube (multiple tubes)
125 communication header 131 wick (first wick)
132 Wick (second wick)
133 Wick (Third Wick)
134 Wick (4th Wick)

Claims (10)

対向する２つの壁部（１１１、１１２）のうち、一方の壁部（１１１）の外表面に発熱体（１０）が取付けられ、内部に冷媒を貯留する冷媒槽（１１０）と、
前記２つの壁部（１１１、１１２）のうち、他方の壁部（１１２）の外表面に設けられ、前記発熱体（１０）によって沸騰気化した前記冷媒を内部に流入させて凝縮液化した後に前記冷媒槽（１１０）に戻す放熱部（１２０）とを備える沸騰冷却装置において、
前記一方の壁部（１１１）の内側面には、前記２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時に下側となる領域から前記発熱体（１０）が配置される領域に至る第１のウィック（１３１）が設けられたことを特徴とする沸騰冷却装置。 Of the two opposing wall portions (111, 112), the heating element (10) is attached to the outer surface of one wall portion (111), and the refrigerant tank (110) that stores the refrigerant therein,
Of the two wall portions (111, 112), provided on the outer surface of the other wall portion (112), the refrigerant boiled and vaporized by the heating element (10) flows into the inside and is condensed and liquefied. In a boiling cooling device comprising a heat radiating part (120) returning to the refrigerant tank (110),
The heating element (10) is disposed on the inner side surface of the one wall portion (111) from the lower region when the two wall portions (111, 112) are used in a posture facing the top-and-bottom direction. A boiling cooling device characterized in that a first wick (131) extending to a region is provided. 前記放熱部（１２０）は、前記他方の壁部（１１２）から立設されて、一端側が前記冷媒槽（１１０）内に連通する一対のヘッダ（１２１、１２２）と、
前記一対のヘッダ（１２１、１２２）間で前記２つの壁部（１１１、１１２）に略平行に配置されて、前記一対のヘッダ（１２１、１２２）内に連通する１以上のチューブ（１２３ａ）とから成ることを特徴とする請求項１に記載の沸騰冷却装置。 The heat radiating portion (120) is erected from the other wall portion (112), and a pair of headers (121, 122) whose one end side communicates with the refrigerant tank (110);
One or more tubes (123a) disposed between the pair of headers (121, 122) substantially parallel to the two wall portions (111, 112) and communicating with the pair of headers (121, 122). The boiling cooling device according to claim 1, comprising: 前記放熱部（１２０）は、前記他方の壁部（１１２）から立設されて、一端側が前記冷媒槽（１１０）内に連通する複数のチューブ（１２３ｂ）と、
前記複数のチューブ（１２３ｂ）の他端側で接続されて、前記複数のチューブ（１２３ｂ）同士を連通させる連通ヘッダ（１２５）とから成ることを特徴とする請求項１に記載の沸騰冷却装置。 The heat dissipating part (120) is erected from the other wall part (112), and a plurality of tubes (123b) whose one end side communicates with the refrigerant tank (110),
2. The boiling cooling device according to claim 1, comprising a communication header (125) connected at the other end side of the plurality of tubes (123 b) and communicating the plurality of tubes (123 b) with each other. 前記２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時の前記冷媒槽（１１０）内の下側領域には、第２のウィック（１３２）が設けられたことを特徴とする請求項１〜請求項３のいずれかに記載の沸騰冷却装置。   A second wick (132) is provided in a lower region in the refrigerant tank (110) when the two wall portions (111, 112) are used in a posture in which they face in a vertical direction. The boiling cooling device according to any one of claims 1 to 3. 前記第２のウィック（１３２）は、前記第１のウィック（１３１）よりも多孔質構造が粗と成るように形成されたことを特徴とする請求項４に記載の沸騰冷却装置。   The boiling cooling device according to claim 4, wherein the second wick (132) is formed so as to have a coarser porous structure than the first wick (131). 前記第２のウィック（１３２）は、前記第１のウィック（１３１）に一体的に形成されたことを特徴とする請求項４または請求項５に記載の沸騰冷却装置。   The boiling cooling apparatus according to claim 4 or 5, wherein the second wick (132) is formed integrally with the first wick (131). 前記第２のウィック（１３２）は、前記発熱体（１０）が配置される領域近傍まで延びるように形成されたことを特徴とする請求項４〜請求項６のいずれかに記載の沸騰冷却装置。   The said 2nd wick (132) was formed so that it might extend to the area | region vicinity where the said heat generating body (10) is arrange | positioned, The boiling cooling device in any one of Claims 4-6 characterized by the above-mentioned. . 前記２つの壁部（１１１、１１２）が天地方向を向く姿勢で使用される時の前記冷媒槽（１１０）内の前記冷媒の液面より上側と成る領域には、前記第１のウィック（１３１）を貫通させつつ、前記冷媒槽（１１０）内を上側と下側とに区切る隔壁（１１３）が設けられたことを特徴とする請求項１〜請求項３のいずれかに記載の沸騰冷却装置。   When the two wall portions (111, 112) are used in a posture facing the top-and-bottom direction, the first wick (131) is disposed in a region above the coolant level in the coolant tank (110). ), And a partition wall (113) that divides the inside of the refrigerant tank (110) into an upper side and a lower side is provided. . 前記一対のヘッダ（１２１、１２２）の一方（１２２）には、このヘッダ（１２２）の反冷媒槽側の先端部から前記第１のウィック（１３１）に繋がる第３のウィック（１３３）が設けられたことを特徴とする請求項２に記載の沸騰冷却装置。   One (122) of the pair of headers (121, 122) is provided with a third wick (133) connected to the first wick (131) from the front end portion of the header (122) on the side opposite to the refrigerant tank. The boiling cooling device according to claim 2, wherein the boiling cooling device is provided. 前記複数のチューブ（１２３ｂ）のいずれかには、前記連通ヘッダ（１２５）側から前記第１のウィック（１３１）に繋がる第４のウィック（１３４）が設けられたことを特徴とする請求項３に記載の沸騰冷却装置。   The fourth wick (134) connected to the first wick (131) from the side of the communication header (125) is provided in any of the plurality of tubes (123b). The boiling cooling apparatus according to 1.
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