WO2010104080A1 - 沸騰冷却装置 - Google Patents
沸騰冷却装置 Download PDFInfo
- Publication number
- WO2010104080A1 WO2010104080A1 PCT/JP2010/053910 JP2010053910W WO2010104080A1 WO 2010104080 A1 WO2010104080 A1 WO 2010104080A1 JP 2010053910 W JP2010053910 W JP 2010053910W WO 2010104080 A1 WO2010104080 A1 WO 2010104080A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- channel
- cooling channel
- fin
- heat transfer
- 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.)
- Ceased
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Classifications
-
- H10W40/73—
-
- 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
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20936—Liquid coolant with phase change
-
- 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
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
Definitions
- the present invention relates to a boiling cooling device, and more particularly to improvement of cooling performance in a cooling device using boiling / two-phase flow (gas-liquid two-phase flow).
- Patent Document 1 is composed of a cooling base body having a coolant channel and a plurality of power semiconductors mounted thereon, optimally determining the mounting position of the power semiconductor element to optimize the temperature rise of the coolant, and cooling A power semiconductor module with improved efficiency is disclosed.
- Patent Document 2 discloses a boiling cooling device that prevents a decrease in heat dissipation performance in the upper part (downstream area) of the module in boiling cooling. In the lower part (upstream area) of the module due to heat transfer from the power semiconductor. It is disclosed that a generated partition prevents the generated steam from entering the upper part (downstream area) of the module.
- JP 2007-12722 A Japanese Patent Laid-Open No. 9-23081
- FIG. 8A and FIG. 8B show a state of small heat transfer promotion in nucleate boiling heat transfer accompanying the growth of small bubbles. This is the case when the bubble size is small in the open flow path.
- 8A is a plan view
- FIG. 8B is a side view.
- the bubble size increases as the pressure decreases, and decreases as the temperature of the surrounding liquid becomes lower than the saturation temperature (subcool state).
- the saturation temperature subcool state
- 9A and 9B show a state of large heat transfer promotion in the nucleate boiling heat transfer accompanying the growth of large bubbles. This is when the bubble size is medium to large in the open channel. As the bubble size increases, the area of the dry portion 50 also increases, but the area occupied by the thin liquid film 52 increases. As a result, the feature of boiling heat transfer becomes remarkable, and the heat transfer promotion ratio when compared with heat transfer to the liquid single phase is large.
- FIG. 10A and FIG. 10B show the state of heat transfer deterioration in nucleate boiling heat transfer accompanying the growth of giant bubbles. This is the case when the bubble size is very large in the open channel. When the bubbles become excessively large, the area occupied by the dry portion 50 increases, and the heat transfer deterioration in this portion becomes more conspicuous than the heat transfer promotion by evaporation of the thin liquid film 52, and the heat transfer surface as a whole is deteriorated in heat transfer. It will take on an aspect.
- FIG. 11A and 11B show the state of heat transfer promotion in nucleate boiling heat transfer accompanying flat bubble growth between cooling fins 12 (hereinafter simply referred to as fins). This is a case where the bubble size is medium in a narrow flow path between fins.
- FIG. 12 shows the relationship between the bubble volume and heat transfer acceleration / degradation.
- the horizontal axis represents the bubble volume
- the vertical axis represents heat transfer.
- An arrow P on the vertical axis indicates heat transfer promotion
- an arrow Q indicates heat transfer deterioration.
- Both the open channel (indicated by symbol a) and the narrow fin channel (indicated by symbol b in the diagram) cannot be expected to promote heat transfer if the bubble volume is too small or too large. It is necessary to keep the size as large as possible (in the figure, the optimum value is indicated by OPT). For this reason, it is important that the contact time with the heat transfer surface is controlled so as not to be excessively long.
- An object of the present invention is to provide a cooling device that can keep a bubble volume to an appropriate size with a simple configuration, thereby improving heat transfer characteristics.
- the present invention relates to a boiling cooling device for cooling a heating element, having at least first and second cooling channels arranged in a vertical direction, wherein the first cooling channel and the second cooling channel supply a refrigerant in a vertical direction.
- it further includes a partition plate arranged between the cooling fin and the steam discharge flow path, and the guide portion is formed as a part of the partition plate.
- the partition plate has an opening at a position corresponding to between the first cooling channel and the second cooling channel, and the guide portion is cooled from the edge of the opening.
- the fin is formed so as to protrude toward the heating element contact side of the fin.
- it further includes a liquid supply pipe that is provided between the first cooling channel and the second cooling channel and supplies a refrigerant to the second cooling channel, and the tip of the guide portion. The portion comes into contact with the liquid supply pipe.
- the first cooling channel is disposed vertically below the second cooling channel, and the guide portion extends from the cooling fin of the second cooling channel to the first cooling channel. An inclination is formed toward the cooling fin.
- the present invention it is possible to keep the bubble volume at an appropriate size with a simple configuration and improve the heat transfer characteristics.
- 1 boil cooling device 2 lower channel, 3 middle channel, 4 upper channel, 10 feed pipe, 12 fins, 13 fin base, 14 cooling surface, 16 steam discharge flow path, 18 flow path partition plate and steam discharge guide plate, 19 guide parts, 20 partition plates.
- FIG. 1A to FIG. 1D show the main configuration of the boiling cooling device in the present embodiment.
- 1A is a front view
- FIG. 1B is a side view
- FIG. 1C is a B-B ′ sectional view
- FIG. 1D is an A-A ′ sectional view.
- the boiling cooling device 1 includes a liquid supply pipe 10, fins 12, fin bases 13, a cooling surface 14, a steam discharge channel 16, and a channel partition plate / steam discharge guide plate 18.
- a plurality of fins 12 are erected on the fin base 13 at a predetermined interval, and each fin 12 forms a cooling channel.
- the boiling cooling device 1 is arranged in the vertical direction (vertical placement), and each fin 12 extends in the vertical direction.
- three channels of the lower channel 2, the middle channel 3, and the upper channel 4 are illustrated, and a total of six channels are shown by being partitioned left and right by the partition plate 20, but the present invention is not limited to this.
- Each fin 12 is formed of, for example, aluminum having high thermal conductivity, and a coolant channel is formed in the vertical direction.
- the refrigerant is forcedly convected vertically upward by the pump.
- the fin 12 enlarges the surface area of the fin base 13 constituting the cooling surface 14 and increases the heat transfer coefficient.
- a power element unit (IGBT module) of a hybrid vehicle abuts on the cooling surface 14 of the fin 12.
- the liquid supply pipe 10 is arranged between the fins 12 and supplies a cooling liquid as a refrigerant to the fins 12. As shown in FIG. 1A, the liquid supply pipe 10 is arranged in the horizontal direction for each channel.
- the lower channel 2 is supplied with a refrigerant vertically upward from a liquid supply pipe 10 disposed at the lower portion of the lower channel 2, and the lower channel of the middle channel 3, that is, the middle channel 3 and the lower channel 2 is supplied to the middle channel 3.
- the refrigerant is supplied vertically upward from the liquid supply pipe 10 disposed between them, and the liquid supply pipe 10 disposed between the upper channel 4 and the lower channel 4, that is, between the upper channel 4 and the middle channel 3, is supplied to the upper channel 4.
- the refrigerant is supplied vertically upward.
- the liquid supply pipes 10 are arranged in the horizontal direction as described above, and each of the liquid supply pipes 10 positioned on the right side of the partition plate 20 is supplied with refrigerant from the right side as indicated by an arrow in the figure, and is positioned on the left side of the partition plate 20. Refrigerant is supplied to each liquid supply pipe 10 from the left side. The refrigerant is heated by each fin 12 of each channel and boiled to generate bubbles.
- the vapor discharge flow path 16 is provided on the upper surface of each fin 12, that is, the surface opposite to the cooling surface 14 of the fin 12 with which the heating element abuts.
- the steam discharge flow path 16 is provided in common to each cooling channel, and discharges bubbles generated in each cooling channel.
- the flow path partition plate / steam discharge guide plate 18 is disposed in contact with the upper surface of each fin 12, that is, the surface opposite to the fin base portion 13, that is, the surface opposite to the cooling surface of the fin 12.
- the vapor discharge channel 16 is partitioned. Further, the flow path partition plate / steam discharge guide plate 18 is opened between the fins 12 of the lower channel 2 and the fins 12 of the middle channel 3 and between the fins 12 of the middle channel 3 and the fins 12 of the upper channel 4.
- a guide portion 19 that protrudes at an angle toward the fin base portion 13 at an edge portion of the opening portion. As shown in FIG.
- the guide portion 19 of the flow path partition plate / steam discharge guide plate 18 is focused on between the lower channel 2 and the middle channel 3, and the fin base from the vertically lower end of the fin 12 of the middle channel. It protrudes toward 13 and contacts the liquid supply pipe 10. The same applies to the middle channel 3 and the upper channel 4, and the guide portion 19 protrudes from the vertically lower end of the fin 12 of the upper channel 4 toward the fin base portion 13 and comes into contact with the liquid supply pipe 10.
- the guide portion 19 may be formed separately from the flow path partition plate / steam discharge guide plate 18 and joined to the flow path partition plate / steam discharge guide plate 18. The portion may be bent on the fin base 13 side.
- the guide portion 19 protrudes at a predetermined angle from the vertically lower end of the fin 12 of the middle channel 3 toward the fin base 13 and abuts against the liquid supply pipe 10, the guide portion 19 is formed by the fin 12 of the lower channel 2.
- the bubbles that have been generated and have passed through the fins 12 are blocked by the guide portion 19 and are prevented from proceeding to the middle channel 3 and are guided to the vapor discharge passage 16.
- the guide portion 19 protrudes at a predetermined angle from the vertically lower end of the fin 12 of the upper channel 4 toward the fin base 13 and contacts the liquid supply pipe 10, the fin of the middle channel 3 The bubbles generated at 12 and passing through the fins 12 are blocked by the guide portion 19 and are prevented from proceeding to the upper channel 4 and are guided to the vapor discharge flow path 16.
- FIG. 2A and 2B show an example of the shape of the liquid supply pipe 10.
- FIG. 2A shows a case where a plurality of refrigerant supply holes whose opening diameters are sequentially increased are formed at predetermined intervals on the side surface of the liquid supply pipe 10.
- FIG. 2B shows a case where a refrigerant supply slit whose opening area is sequentially increased is formed on the side surface of the liquid supply pipe 10. In any case, the opening diameter or the opening area is increased toward the downstream side of the refrigerant.
- FIG. 3A and 3B show the configuration of the flow path partition plate / steam discharge guide plate 18.
- 3A is a front view and FIG. 3B is a side view.
- the flow path partition plate / steam discharge guide plate 18 is formed by pressing a metal plate, and has openings 18a and 18b between the lower channel 2 and the middle channel 3 and between the middle channel 3 and the upper channel 4 respectively. Is formed. Bubbles generated and grown in the lower channel 2 are discharged from the opening 18a to the vapor discharge channel 16, and bubbles generated and grown in the middle channel 3 are discharged from the opening 18b to the vapor discharge channel 16.
- the guide portion 19 is formed at the opening end of the opening 18a, specifically, the vertically lower end of the fin 12 of the middle channel 3, and the opening end of the opening 18b, that is, the fin 12 of the upper channel 4 is formed.
- a guide portion 19 is formed at the end portion on the vertically lower side.
- the guide portion 19 may be formed by bending a part of the flow path partition plate / steam discharge guide plate 18.
- FIGS. 4A and 4B are exploded perspective views of the fins 12 and the flow path partition plate / steam discharge guide plate 18. Bubbles generated in the fins 12 of the lower channel 2 collide with the guide portion 19, and are discharged from the opening 18 a to the vapor discharge channel 16 without proceeding to the middle channel 3. In addition, bubbles generated in the fins 12 of the middle channel 3 also collide with the guide portion 19 and are discharged from the opening 18 b to the vapor discharge flow path 16 without proceeding to the upper channel 4. Bubbles generated in the fins 12 of the upper channel 4 are discharged as they are to the vapor discharge flow path 16.
- FIG. 5 shows the overall configuration of the boiling cooling device 1.
- the cooling unit 28 which is a main part, is disposed between the heating elements 26 such as a power element unit.
- a refrigerant supply jacket 22 and a liquid quantity distribution plate 24 are provided vertically below the cooling unit 28, store the refrigerant supplied by the pump from below the vertical, and distribute the refrigerant in an appropriate amount to each of the cooling units 28. Supply to the supply pipe 10.
- a steam discharge jacket 30 is provided vertically above the cooling unit 28 and connected to the steam discharge channel 16 of the cooling unit 28. Bubbles discharged to the steam discharge passage 16 by the guide portion 19 are collected in the steam discharge jacket 30 and discharged to the outside.
- the flow path partition plate / steam discharge guide plate 18 is interposed between the fins 12 and the steam discharge flow path 16 so that bubbles generated in each cooling channel advance to the next cooling channel.
- the steam discharge channel 16 is arranged on the upper surface side of the fin 12, that is, on the side opposite to the power element unit that is a heating element, the size in the width direction of the cooling device can be reduced.
- the flow path partition plate / steam discharge guide plate 18 in the present embodiment only needs to be disposed on the fins 12, the structure is simplified and the assemblability at the time of manufacture is improved.
- the boiling cooling device 1 is placed vertically, and the fins 12 are also placed vertically, so that there is an effect of improving the discharge of generated bubbles due to buoyancy.
- boiling cooling device of this embodiment can be applied not only to inverter cooling of a hybrid vehicle but also to any heating element.
- system configuration using the cooling device of this embodiment is also arbitrary, an example is shown in FIGS.
- the gas-liquid two-phase flow discharged from the boiling cooling device 1 is supplied to the gas-liquid separator 106.
- a condenser 108 is connected to the gas-liquid separator 106
- a second gas-liquid separator 110 is further connected to the condenser 108.
- the cooling liquid from the gas-liquid separators 106 and 110 is supplied to the supercooler 102 via the adjustment valve 112 and is circulated to the boiling cooling device 1 by the pump 104.
- the accumulator 100 is connected between the adjustment valve 112 and the subcooler 102, and the coolant is supplied to the subcooler 102 using the gas pressure.
- the gas-liquid two-phase flow discharged from the boiling cooling device 1 is supplied to the condenser 108, and the gas-liquid separator 116 is connected to the condenser 108.
- the coolant from the gas-liquid separator 116 is circulated to the boiling cooling device 1 by the pump 104.
- the accumulator 100 is connected between the pump 104 and the gas-liquid separator 116, and supplies the cooling liquid to the pump 104 using gas pressure.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims (5)
- 発熱体を冷却する沸騰冷却装置において、
鉛直方向に配置された少なくとも第1及び第2の冷却チャネルを有し、
前記第1冷却チャネル及び第2冷却チャネルは、
鉛直方向に冷媒を流す冷却フィンと、
前記冷却フィンの、発熱体当接側と反対側に形成された蒸気排出流路と、
を有し、さらに、
前記第1冷却チャネルと前記第2冷却チャネル間に、前記第1冷却チャネルで発生した気泡の前記第2冷却チャネルへの進行を阻害し前記蒸気排出流路へと導くガイド部を有する
ことを特徴とする沸騰冷却装置。 - 請求項1記載の装置において、さらに、
前記冷却フィンと前記蒸気排出流路との間に配置される仕切板
を有し、前記ガイド部は前記仕切板の一部として形成される
ことを特徴とする沸騰冷却装置。 - 請求項2記載の装置において、
前記仕切板は、前記第1冷却チャネルと前記第2冷却チャネル間に対応する位置に開口部を有し、前記ガイド部は前記開口部の縁部から前記冷却フィンの前記発熱体当接側に向けて突出形成される
ことを特徴とする沸騰冷却装置。 - 請求項3記載の装置において、さらに、
前記第1冷却チャネルと前記第2冷却チャネル間に設けられ前記第2冷却チャネルに冷媒を供給する給液管
を有し、前記ガイド部の先端部は前記給液管に当接することを特徴とする沸騰冷却装置。 - 請求項3記載の装置において、
前記第1冷却チャネルは前記第2冷却チャネルの鉛直下方に配置され、
前記ガイド部は、前記第2冷却チャネルの前記冷却フィンから前記第1冷却チャネルの前記冷却フィンに向けて傾斜形成される
ことを特徴とする沸騰冷却装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/254,680 US20120111550A1 (en) | 2009-03-10 | 2010-03-09 | Ebullient cooling device |
| CN201080011212.XA CN102349152B (zh) | 2009-03-10 | 2010-03-09 | 沸腾冷却装置 |
| DE112010001158T DE112010001158B8 (de) | 2009-03-10 | 2010-03-09 | Heisswasserkühlvorrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-056086 | 2009-03-10 | ||
| JP2009056086A JP4766132B2 (ja) | 2009-03-10 | 2009-03-10 | 沸騰冷却装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010104080A1 true WO2010104080A1 (ja) | 2010-09-16 |
Family
ID=42728369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/053910 Ceased WO2010104080A1 (ja) | 2009-03-10 | 2010-03-09 | 沸騰冷却装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120111550A1 (ja) |
| JP (1) | JP4766132B2 (ja) |
| CN (1) | CN102349152B (ja) |
| DE (1) | DE112010001158B8 (ja) |
| WO (1) | WO2010104080A1 (ja) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5714429B2 (ja) * | 2011-06-24 | 2015-05-07 | 株式会社豊田中央研究所 | 沸騰冷却装置 |
| CN103796494B (zh) * | 2014-01-28 | 2016-02-03 | 华进半导体封装先导技术研发中心有限公司 | 密闭性温度控制装置 |
| SG10201809763VA (en) * | 2014-05-02 | 2018-12-28 | Nat Univ Singapore | Device and method for a two phase heat transfer |
| WO2016117342A1 (ja) * | 2015-01-21 | 2016-07-28 | パナソニックIpマネジメント株式会社 | 冷却装置およびこれを搭載した電子機器 |
| JP6365691B2 (ja) * | 2015-01-22 | 2018-08-01 | 三菱電機株式会社 | 半導体装置 |
| WO2017046986A1 (ja) * | 2015-09-15 | 2017-03-23 | パナソニックIpマネジメント株式会社 | 冷却装置およびこれを搭載した電子機器 |
| CN115579334B (zh) * | 2022-10-10 | 2025-09-16 | 南方电网科学研究院有限责任公司 | 一种用于气液混合态介质内的散热装置及其制备方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0923081A (ja) * | 1995-07-05 | 1997-01-21 | Nippondenso Co Ltd | 沸騰冷却装置 |
| JPH09139453A (ja) * | 1995-11-16 | 1997-05-27 | Toshiba Corp | 半導体冷却装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0223081A (ja) * | 1988-07-11 | 1990-01-25 | Matsushita Electric Ind Co Ltd | 速度制御装置 |
| JPH0339453A (ja) * | 1989-07-06 | 1991-02-20 | Sumitomo Light Metal Ind Ltd | Vtrシリンダー用アルミニウム合金鋳造棒の製造方法 |
| JP2005268658A (ja) * | 2004-03-19 | 2005-09-29 | Denso Corp | 沸騰冷却装置 |
| JP4699820B2 (ja) | 2005-06-28 | 2011-06-15 | 本田技研工業株式会社 | パワー半導体モジュール |
-
2009
- 2009-03-10 JP JP2009056086A patent/JP4766132B2/ja not_active Expired - Fee Related
-
2010
- 2010-03-09 WO PCT/JP2010/053910 patent/WO2010104080A1/ja not_active Ceased
- 2010-03-09 DE DE112010001158T patent/DE112010001158B8/de not_active Expired - Fee Related
- 2010-03-09 CN CN201080011212.XA patent/CN102349152B/zh not_active Expired - Fee Related
- 2010-03-09 US US13/254,680 patent/US20120111550A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0923081A (ja) * | 1995-07-05 | 1997-01-21 | Nippondenso Co Ltd | 沸騰冷却装置 |
| JPH09139453A (ja) * | 1995-11-16 | 1997-05-27 | Toshiba Corp | 半導体冷却装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102349152B (zh) | 2013-01-09 |
| DE112010001158B8 (de) | 2013-04-18 |
| JP2010212402A (ja) | 2010-09-24 |
| DE112010001158B4 (de) | 2013-01-31 |
| DE112010001158T5 (de) | 2012-05-10 |
| US20120111550A1 (en) | 2012-05-10 |
| JP4766132B2 (ja) | 2011-09-07 |
| CN102349152A (zh) | 2012-02-08 |
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