WO2016173286A1 - 液冷散热器及电子设备 - Google Patents

液冷散热器及电子设备 Download PDF

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Publication number
WO2016173286A1
WO2016173286A1 PCT/CN2015/099167 CN2015099167W WO2016173286A1 WO 2016173286 A1 WO2016173286 A1 WO 2016173286A1 CN 2015099167 W CN2015099167 W CN 2015099167W WO 2016173286 A1 WO2016173286 A1 WO 2016173286A1
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substrate
liquid
heat
heat sink
cooling medium
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PCT/CN2015/099167
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English (en)
French (fr)
Inventor
柴宏生
李婷婷
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中兴通讯股份有限公司
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Publication of WO2016173286A1 publication Critical patent/WO2016173286A1/zh

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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
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device

Definitions

  • the present invention relates to the field of electronic device technologies, and in particular, to a liquid-cooled heat sink and an electronic device.
  • liquid-cooled heat sinks in electronic equipment and communication equipment are usually used to carry away all the heat in the liquid-cooled substrate, and the outer surface of the liquid-cooled substrate that is not in contact with the chip is a flat plane, and the heat-dissipating effect is poor.
  • embodiments of the present invention are directed to providing a liquid-cooled heat sink and an electronic device, the main purpose of which is to enhance the heat exchange between the substrate and the surrounding air through the heat exchange fins to achieve a better heat dissipation effect.
  • an embodiment of the present invention provides a liquid-cooled heat sink including a substrate for dissipating heat, wherein the substrate is provided with a heat dissipating surface, and the substrate is provided with a cooling medium inlet, a cooling medium outlet, and a liquid cooling flow path.
  • the cooling medium inlet communicates with the cooling medium outlet through the liquid cooling flow passage, and the heat dissipation surface is provided with heat exchange fins.
  • the liquid-cooled flow channel is a metal pipe
  • the substrate is provided with a receiving passage for accommodating the metal pipe.
  • the substrate is formed by welding the upper substrate and the lower substrate, and the upper surface of the upper substrate and the lower substrate are respectively provided with an upper groove and a lower groove, and the upper groove and the lower surface The groove is enclosed to form a liquid cooling channel.
  • the heat dissipating fins are welded or integrally formed with the substrate.
  • the heat dissipating fins are welded or integrally formed with the lower substrate.
  • the substrate and the heat exchange fin are both made of a metal heat conductive material.
  • the liquid-cooled heat sink includes a plurality of the substrates arranged in series, and a cooling medium outlet of the substrate of the upper stage and a cooling medium inlet of the substrate of the next stage are connected by a connecting pipe.
  • the embodiment of the invention also proposes an electronic device, which comprises the above liquid cooling radiator.
  • the liquid-cooled heat sink and the electronic device provided by the embodiments of the present invention provide heat dissipation between the substrate and the surrounding air by disposing heat-dissipating fins on the outer surface of the substrate, thereby enabling the substrate to exert a greater heat dissipation effect.
  • the surrounding air can also be used to dissipate heat from the substrate.
  • FIG. 1 is a schematic structural view of a preferred embodiment of a liquid cooling heat sink of the present invention
  • FIG. 2 is a schematic view of a heat dissipation system of a preferred embodiment of the liquid cooling heat sink of the present invention.
  • the invention provides a liquid cooling radiator.
  • FIG. 1 is a schematic structural view of a liquid cooling heat sink according to a preferred embodiment of the present invention.
  • the liquid cooling heat sink 11 includes a substrate 20 for heat dissipation, and a heat dissipation surface is disposed on the substrate 20 .
  • the substrate 20 is provided with a cooling medium inlet 22, a cooling medium outlet 23 and a liquid cooling flow passage 24.
  • the cooling medium inlet 22 and the cooling medium outlet 23 communicate with each other through the liquid cooling flow passage 25, and the heat radiating surface of the substrate 20 is provided with heat exchange fins. 21, as shown in FIG. 2, in this embodiment, the shape of the heat exchange fin 21
  • the sheet fin is preferable, but the shape of the heat exchange fin of the present invention is not limited thereto, and may be other shapes such as a needle fin, a cylindrical fin, or a profiled fin.
  • the liquid-cooled heat sink 11 proposed in this embodiment adopts a heat exchange fin 21 on the outer surface of the substrate 20 to perform better heat exchange with the surrounding air.
  • the substrate 20 absorbs the heat of the surrounding air through the heat exchange fins 21 to lower the ambient air temperature.
  • the ambient air can also be dissipated through the heat exchange fins 21 to assist the substrate 20 to achieve heat dissipation. Better heat transfer.
  • the structure of the substrate 20 is preferably formed by soldering the upper substrate 25 and the lower substrate 26.
  • the upper surface of the substrate 25 and the lower substrate 26 are correspondingly provided with upper and lower grooves, upper grooves and lower portions.
  • the groove encloses to form the liquid cooling passage 24, and at this time, the heat exchange fin 21 is attached to the upper surface of the upper substrate 24.
  • this embodiment uses the upper surface of the upper substrate 24 as a heat dissipating surface, but Further, the other side of the upper substrate 24 or the side surface of the lower substrate 25 may be further used as a heat dissipating surface.
  • the substrate 20 may be further provided as a complete board in which The accommodating channel is opened, and the metal pipe is pressed into the accommodating channel as a liquid cooling channel.
  • the specific structure of the liquid cooling channel 24 may be other forms.
  • the heat dissipating fins 21 are preferably integrally formed with the upper substrate 24. In other embodiments, a fixed connection manner such as soldering or crimping may be selected.
  • the substrate 20 may be The heat exchange fins 21 may be integrally formed or welded, and the substrate 20 and the heat exchange fins 21 may be metal heat conductive materials such as copper, aluminum, stainless steel or the like, or alloys of various metal materials may be welded, crimped, etc. The method is connected, and other heat conductive materials such as graphite sheets or thermal conductive films may be connected by bonding or the like to achieve a good heat dissipation effect of the liquid cooling radiator.
  • FIG. 2 is a schematic diagram of a heat dissipation system of a preferred embodiment of the liquid cooling heat sink of the present invention.
  • the cooling medium flowing out of the liquid cooling source 10 enters the substrate 20 through the cooling medium inlet 22.
  • Flowing inside the liquid cooling passage 24 inside the substrate 20 passing through the cooling medium.
  • the heat exchange with the substrate 20 carries away the heat generated during the use of the electronic product 13 and the like, and flows out of the substrate 20 through the cooling medium outlet 23, returns to the liquid cooling source 10, and is cooled by the liquid cooling source, and then transported to the substrate.
  • a cycle is formed to dissipate heat for the electronic product 13 or the like.
  • the liquid-cooled heat sink comprises a plurality of substrates 20 arranged in series, and the plurality of substrates 20 are connected by a connecting pipe.
  • the connecting pipe may be a metal pipe such as a copper pipe or an aluminum pipe, or may be a non-metal pipe.
  • the cooling medium outlet 23 of the primary substrate 20 and the cooling medium inlet of the next primary substrate are connected by a connecting pipe, and a liquid-cooled heat sink can exchange heat for a plurality of chips or other electronic devices.
  • embodiments of the present invention also describe an electronic device including the liquid-cooled heat sink described above.
  • the liquid-cooled heat sink includes a substrate for dissipating heat, and the substrate is provided with a heat dissipating surface, the substrate is provided with a cooling medium inlet, a cooling medium outlet and a liquid cooling flow channel, and the cooling medium inlet and the cooling medium are The cooling medium outlet is connected through the liquid cooling flow channel, and the heat dissipating surface is provided with heat exchange fins; thus, the heat exchange between the substrate and the surrounding air is realized by the heat dissipating fins, thereby causing the substrate to exert a greater heat dissipation effect.
  • the surrounding air can also be used to dissipate heat from the substrate.

Abstract

一种液冷散热器（11）及电子设备，其中，所述液冷散热器（11）包括用于散热的基板（20），基板（20）上设置有散热面，基板（20）设置有冷却介质入口（22）、冷却介质出口（23）和液冷流道（24），冷却介质入口（22）与冷却介质出口（23）通过液冷流道（24）连通，基板（20）的散热面上设置有换热翅片（21）。

Description

液冷散热器及电子设备 技术领域
本发明涉及电子设备技术领域，尤其涉及一种液冷散热器及电子设备。
背景技术
在电子设备、通讯设备中，由于芯片功耗的不断增大，传统风冷技术已经难以完全解决大功耗芯片(如功耗150W以上芯片)的散热问题，液冷散热方案正逐渐被重视。目前常用的电子设备、通讯设备中的液冷散热器，通常液体在液冷基板内部流动将全部热量带走，不与芯片接触的液冷基板外表面为平整平面，其散热效果较差。
发明内容
有鉴于此，本发明实施例期望提供一种液冷散热器及电子设备，主要目的在于通过换热翅片强化基板与周围空气换热，以达到更好的散热效果。
为实现上述目的，本发明实施例提供一种液冷散热器，包括用于散热的基板，所述基板上设置有散热面，所述基板设置有冷却介质入口、冷却介质出口和液冷流道，所述冷却介质入口与所述冷却介质出口通过所述液冷流道连通，所述散热面上设置有换热翅片。
上述方案中，所述液冷流道为金属管道，所述基板内设置有容置所述金属管道的容置通道。
上述方案中，所述基板为上基板和下基板焊接形成，所述上基板和所述下基板的焊接面上分别对应设置有上凹槽和下凹槽，所述上凹槽和所述下凹槽围合形成液冷流道。
上述方案中，所述散热翅片与所述基板焊接或者一体成型。
上述方案中，所述散热翅片与所述下基板焊接或者一体成型。
上述方案中，所述基板和所述换热翅片均由金属导热材料制成。
上述方案中，所述液冷散热器包括串联设置的多个所述基板，上一级所述基板的冷却介质出口与下一级所述基板的冷却介质入口通过连接管道连通。
本发明实施例还提出了一种电子设备，所述电子设备包括上述液冷散热器。
本发明实施例提出的液冷散热器及电子设备，通过在基板的外表面设置散热翅片，通过散热翅片实现基板与周围空气的换热，从而使得基板发挥更大的散热作用，同时在基板散热能力不足时候，还可以通过周围空气辅助基板散热。
附图说明
图1为本发明液冷散热器较佳实施例的结构示意图；
图2为本发明液冷散热器较佳实施例的散热系统示意图。
具体实施方式
下面结合附图及具体实施例就本发明的技术方案做进一步的说明，应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种液冷散热器。
参照图1所示，图1为本发明液冷散热器较佳实施例的结构示意图，在本实施例中，该液冷散热器11包括用于散热的基板20，基板20上设置有散热面，基板20设置有冷却介质入口22、冷却介质出口23和液冷流道24，冷却介质入口22与冷却介质出口23通过液冷流道25连通，基板20的散热面上设置有换热翅片21，如图2，该实施例中，换热翅片21的形状 优选为片型翅片，但本发明的换热翅片形状并不限于此，也可以是针形翅片、圆柱形翅片或异形翅片等其他形状。
本实施例中提出的液冷散热器11，采用在基板20外表面增加换热翅片21，从而与周围的空气进行更好的换热，在基板20温度低于周围空气温度的情况下，基板20通过换热翅片21吸收周围空气的热量可以使得周围空气温度降低，当基板20温度高于周围温度的情况下，周围空气也可以通过换热翅片21辅助基板20进行散热，从而达到更好的换热效果。
在一实施例中，基板20的结构优选为上基板25与下基板26焊接而成，上基板25和下基板26的焊接面上对应设置有上凹槽和下凹槽，上凹槽和下凹槽围合形成液冷流道24，此时，换热翅片21附着在上基板24的上表面，如图2所示，该实施例将上基板24的上表面作为散热面，但并不局限于此，也可以进一步地将上基板24的其他侧面或者下基板25的侧面等作为散热面，此种结构易于加工且节省成本；基板20也可以进一步设置为一块完整的板，在其中开设容置通道，将金属管道压入容置通道内作为液冷流道，其他实施例中，液冷流道24的具体结构也可以为其他形式。
在一实施例中，散热翅片21优选为与上基板24一体成型制成，其他实施例中也可以选择焊接、压接等固定连接方式，当基板20为一块完整的板时，基板20可以与换热翅片21可以一体成型也可以焊接成型，基板20和换热翅片21可以是铜、铝、不锈钢等金属导热材料或者是多种金属材质混合而成的合金通过焊接、压接等方式连接，也可以是石墨片或者导热胶片等其他导热材料通过粘接等方式连接，以实现液冷散热器的良好散热效果。
如图2所示，图2为本发明液冷散热器较佳实施例的散热系统示意图，在使用液冷散热器11时，由液冷源10流出的冷却介质通过冷却介质入口22进入基板20，在基板20内部的液冷流道24的内部流动，通过冷却介质 与基板20的热交换，将电子产品13等使用期间产生的热量带走，并通过冷却介质出口23流出基板20，再回到液冷源10处，经液冷源降温后，再输送至基板20处，形成循环，为电子产品13等进行散热。
在一实施例中，液冷散热器包括多个串联设置的基板20，多个基板20之间通过连接管道连接，连接管道可以是铜管、铝管等金属管，也可以是非金属管，上一级基板20的冷却介质出口23与下一级基板的冷却介质入口通过连接管道连通，一个液冷散热器可为多个芯片或者其他电子设备换热。
相应地，本发明实施例还记载一种电子设备，所述电子设备包括上文所述的液冷散热器。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。
工业实用性
本发明实施例中，液冷散热器包括用于散热的基板，所述基板上设置有散热面，所述基板设置有冷却介质入口、冷却介质出口和液冷流道，所述冷却介质入口与所述冷却介质出口通过所述液冷流道连通，所述散热面上设置有换热翅片；如此，通过散热翅片实现基板与周围空气的换热，从而使得基板发挥更大的散热作用，同时在基板散热能力不足时候，还可以通过周围空气辅助基板散热。

Claims (8)

  1. 一种液冷散热器，包括用于散热的基板，所述基板上设置有散热面，所述基板设置有冷却介质入口、冷却介质出口和液冷流道，所述冷却介质入口与所述冷却介质出口通过所述液冷流道连通，所述散热面上设置有换热翅片。
  2. 根据权利要求1所述的液冷散热器，其中，所述液冷流道为金属管道，所述基板内设置有容置所述金属管道的容置通道。
  3. 根据权利要求1所述的液冷散热器，其中，所述基板为上基板和下基板焊接形成，所述上基板和所述下基板的焊接面上分别对应设置有上凹槽和下凹槽，所述上凹槽和所述下凹槽围合形成液冷流道。
  4. 根据权利要求2所述的液冷散热器，其中，所述散热翅片与所述基板焊接或者一体成型。
  5. 根据权利要求3所述的液冷散热器，其中，所述散热翅片与所述下基板焊接或者一体成型。
  6. 根据权利要求1至5中任一项所述的液冷散热器，其中，所述基板和所述换热翅片均由金属导热材料制成。
  7. 根据权利要求1所述的液冷散热器，其中，所述液冷散热器包括串联设置的多个所述基板，上一级所述基板的冷却介质出口与下一级所述基板的冷却介质入口通过连接管道连通。
  8. 一种电子设备，包括权利要求1至7中任一项所述的液冷散热器。
PCT/CN2015/099167 2015-04-28 2015-12-28 液冷散热器及电子设备 WO2016173286A1 (zh)

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CN202083049U (zh) * 2011-06-13 2011-12-21 Tcl空调器(中山)有限公司 空调及空调的散热装置
CN203120357U (zh) * 2013-01-14 2013-08-07 中兴通讯股份有限公司 液冷散热机柜
CN203814108U (zh) * 2013-12-19 2014-09-03 上海西门子医疗器械有限公司 液冷装置、液冷组件和医疗设备

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