CN2842733Y - 散热装置 - Google Patents

散热装置 Download PDF

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CN2842733Y
CN2842733Y CNU2005200599601U CN200520059960U CN2842733Y CN 2842733 Y CN2842733 Y CN 2842733Y CN U2005200599601 U CNU2005200599601 U CN U2005200599601U CN 200520059960 U CN200520059960 U CN 200520059960U CN 2842733 Y CN2842733 Y CN 2842733Y
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bending segment
bending
heat abstractor
radiating fin
flat plate
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郝明亮
林雨利
黄爱民
杨明
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Fuzhun Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Fuzhun Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/42Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
    • H01L23/427Cooling by change of state, e.g. use of heat pipes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-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
    • F28D15/02Heat-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
    • F28D15/0266Heat-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-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
    • F28D15/02Heat-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
    • F28D15/0275Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367Cooling facilitated by shape of device
    • H01L23/3672Foil-like cooling fins or heat sinks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/467Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00Fins
    • F28F2215/10Secondary fins, e.g. projections or recesses on main fins
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
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Abstract

一种散热装置,包括至少一热管及若干散热鳍片,该热管穿设于散热鳍片上,每一散热鳍片包括平板段及弯折段,该弯折段至少部分夹设于平板段之间,本实用新型散热装置中,散热鳍片形成弯折段与平板段结构并相互扣合成一整体,不仅增大散热鳍片的散热面积,提升散热鳍片的强度,还可对流经散热鳍片间的气流进行导流,减小气流流阻,提升散热鳍片的换热效果。

Description

散热装置
【技术领域】
本实用新型关于一种散热装置,尤指一种具有较高散热性能的散热装置。
【背景技术】
随着大规模集成电路技术的不断进步及广泛应用,信息产业的发展突飞猛进,计算机广泛应用于各行各业,尤其个人计算机的应用已基本普及,为适应数据处理量不断增加及实时性要求提高的发展趋势,必然要求计算机运行速度不断提高。众所周知,中央处理器是计算机系统的核心元件,其性能的优劣直接决定整个计算机的性能,因此,高频高速处理器不断推出。但是由于高频高速运行使得处理器单位时间产生大量热量,如不及时排除这些热量将引起处理器自身温度的升高,对系统的安全及性能造成很大影响,目前散热问题已经成为新一代高速处理器推出时必需解决的问题。
通常业界在中央处理器等芯片上安装散热器辅助其散热,同时,在散热器上安装风扇,以提供强制气流促使散热器的热量快速散发,从而能够对中央处理器等发热电子元件进行更为有效的散热。最初,是采用简单铝挤型及压铸型散热器,由于受限于机械加工其散热面积有限,与周围空气交换温度的面积不大,即使配用风扇亦无法及时充分地散发热量,为此,业者对传统散热器进行改良,谋求散热器整体散热面积的增加,从而,产生了一种由若干金属散热鳍片组成的组合式散热器,如图6所示,该散热器1包括若干相互平行设置的散热鳍片2,该散热鳍片2呈平板状结构,相邻两散热鳍片2之间形成风道3,每一散热鳍片2上设有供热管4的冷凝部穿设的穿孔,从而可配合热管4使用以增强散热效果,其中热管4的蒸发部是与热源热性接触,从而将热源所产生的热量快速传导至热管4的冷凝部,进而将热量较均匀地散布至各散热鳍片2上,同时于散热器1的侧端设置一风扇,提供强制气流辅助散热,最终通过散热鳍片2将热量散发至周围环境中。
然而,上述散热器虽然可通过增加散热鳍片2的数量或增大每一散热鳍片2的面积的方式提升散热器1的整体散热面积,以提升散热效果,但随着电子技术日益朝着高密度与小型化方向发展,相应地,散热元件所占的空间以及重量均受到限制,散热鳍片2所能增加的数量及尺寸有限,而其对散热效果的改善亦同样有限,另外,由于散热鳍片2是平板结构,当风扇气流流经散热鳍片2时,经热管后4分流,部分气流自散热鳍片2边缘损失掉,部分气流撞击正向气流形成回流,增大气流流阻,影响换热效果,因此散热鳍片2与风扇气流的换热效果较低,散热鳍片2对风扇气流的利用率不高,影响散热器的整体散热效果。
【发明内容】
本实用新型为解决散热鳍片的换热效率不高的问题,提供一种具有高效换热效果的散热装置。
一种散热装置,包括至少一热管及若干散热鳍片,该热管穿设于散热鳍片上,每一散热鳍片包括平板段及弯折段,该弯折段至少部分夹设于平板段之间。
一种散热装置,包括至少一热管及穿设于该热管上的若干散热鳍片,该散热鳍片包括至少两种呈不同角度弯折的第一弯折段及第二弯折段。
该散热装置中,散热鳍片形成弯折段与平板段结构并相互扣合成一整体,不仅增大散热鳍片的散热面积,提升散热鳍片的强度,还可对流经散热鳍片间的气流进行导流,减小气流流阻,提升散热鳍片的换热效果。
【附图说明】
图1是散热装置组装示意图。
图2是散热装置分解示意图。
图3是基座另一角度示图。
图4是散热鳍片示意图。
图5是散热鳍片放大示意图。
图6是习知的散热器示意图。
【具体实施方式】
下面参照附图,结合实施例对本进一步说明。
如图1及图2所示,散热装置包括一基座10,连结于该基座10的热管30及穿设于该热管30的若干散热鳍片50。
请同时参考图3,该基座10包括一底板12及一盖板14,该底板12呈方形,其底部用于与发热元件(图未示)相接触,底板12上方两侧分别设有两圆孔120。盖板14是与底板12相配合,该盖板14下方对应底板12的每一圆孔120设有一凸柱140,该盖板14两侧分别设有一贯穿该盖板14的开孔142,盖板14底部中央位置向上凹陷形成与所述开孔142连通的容置空间144。
该底板12与盖板14相对接,盖板14的凸柱140通过干涉配合容置于底板12的圆孔120内,从而底板12与盖板14固定连结形成基座10。
热管30呈“U”形,其包括一蒸发部32及自该蒸发部32两端分别向上延伸的冷凝部34,该蒸发部32是收容于基座10的容置空间144内,且与底板12热性连结,该蒸发部32与底板12之间可通过焊接,粘贴等方式相固定,热管30的冷凝部34分别自盖板14的两开孔142处向上穿出,以便于散热鳍片50的穿设。
请同时参考图4及图5,散热鳍片50相互间隔平行设置,每一散热鳍片50包括相互交替设置的弯折段与平板段,其中该散热鳍片50的中央位置形成大致呈60度连续弯折的第一弯折段52,该第一弯折段52的弯折处均形成弧线状过度,该第一弯折段52两侧分别形成一第一平板段54,该第一平板段54均设有供热管30蒸发部穿设的穿孔540,每一穿孔540边缘设有一与该穿孔540连通的容置孔542,该穿孔540外缘向上延伸形成一环状凸缘544,该凸缘544对应于相应的容置孔542位置形成一缺口546。
每一第一平板段54外侧向外弯折延伸分别形成一第二弯折段52’,该第二弯折段52’大致呈120度弯折延伸,同样该第二弯折段52’的弯折处亦形成弧线状过度。该第二弯折段52’的外侧分别形成一第二平板段54’,该第二平板段54’构成该散热鳍片50的两边缘,每一第二平板段54’的边缘处靠近两端的位置分别形成一卡片56,该卡片56是于该第二平板段54’向下弯折,对应该卡片56的位置该第二平板段54’形成一凹陷58。
其中第一、第二弯折段52、52’均可通过对散热鳍片50连续进行弯折而成,亦可通过对散热鳍片50进行局部拉伸而成,在通过局部拉伸的成型中,由于其是通过散热鳍片50的局部拉伸变形形成弯折段,故该第一、第二弯折段52、52’的厚度小于该第一平板段54的厚度,相对于直接弯折成型,在散热面积相同的情况下,由于其厚度减小,因此重量较轻,所需原材料减少。
上述各散热鳍片50相互间隔叠设,相邻后一散热鳍片50的凸缘544抵靠于相邻前一散热鳍片50的第一平板段54,该相邻前一散热鳍片50的卡片56抵靠于该相邻后一散热鳍片50的凹陷58内,从而两相邻散热鳍片50之间具有一定之间距,形成风道70,而由于散热鳍片50呈弯折状与平板状交替的分段结构,从而将风道70分为若干区域。
散热鳍片50是套设于该热管30冷凝部34上,热管30的冷凝部34依次穿过每一散热鳍片50的穿孔540并与散热鳍片50热性连结,同理,该冷凝部34与散热鳍片50之间可通过焊接或粘贴等方式固定连结,而凸缘544则与冷凝部34相贴设,可增大热管30与散热鳍片50之间的传热面积,从而增强热管30与散热鳍片50之间的热传导。
当该散热装置工作时,底板12与发热元件相接触,同时于正对散热鳍片50位置设置一风扇(图未示),提供强制气流辅助散热,加强散热效果。
首先底板12吸收发热元件所产生的热量并将所吸收的热量传导至热管30的蒸发部32,热管30内的工作介质快速吸热汽化将热量传导至冷凝部34,然后冷凝部34将热量传导至各散热鳍片50,通过风扇产生的强制气流将散热鳍片50上的热量带走,而工作介质于冷凝部34释放热量后液化回流至蒸发部32,并再次吸热蒸发,如此循环,达到散热的目的。
由于该散热鳍片50上形成交替的弯折段与平板段结构,因此增大了散热鳍片50的散热表面积,即增大了该散热鳍片50与风扇所产生的强制气流的热交换面积,提升换热效果。而该交替的弯折段与平板段结构将散热鳍片50之间所形成的风道70分割成若干区域,当风扇产生的气流流经散热鳍片50时,不仅可引导气流沿风道70流动,而且可对流经热管30的气流进行导流,气流在流经热管30后,沿热管30两侧分别以一定夹角流向散热鳍片50的第一及第二弯折段52、52’,而由于该弯折段的设置,气流不会直接撞击沿散热鳍片50正向流经该第一、第二弯折段52、52’的气流,而是沿该第一、第二弯折段52、52’边缘的折边逐渐形成与正向来风方向相同的气流,从而不仅有效避免气流之间相互干扰产生涡流,减小气流的涡流损失,而且减小散热鳍片50两侧的漏风,从而提升气流流速及流量,增强换热效果,而该第一、第二弯折段52、52’的弯折处均呈弧线状,有利减小风阻,提升散热效果。
另外,该散热鳍片50的弯折状设计,可有效提升散热鳍片50的强度,散热鳍片50两侧形成相互抵靠的卡片56结构,可增散热鳍片50整体的强度,即使在高速高压的气流冲击下,亦可减小震动以及噪音的产生。

Claims (17)

1.一种散热装置,包括至少一热管及若干散热鳍片,该热管穿设于散热鳍片上,其特征在于:每一散热鳍片包括平板段及弯折段,该弯折段至少部分夹设于平板段之间。
2.如权利要求1所述的散热装置,其特征在于:该热管呈“U”形,其包括一蒸发部及自该蒸发部两端延伸的冷凝部,该冷凝部穿设于该散热鳍片的平板段。
3.如权利要求2所述的散热装置,其特征在于:该弯折段包括设于穿设有热管的平板段之间的第一弯折段及设于该穿设有热管的平板段外侧的第二弯折段。
4.如权利要求3所述的散热装置,其特征在于:该第一弯折段呈60度连续弯折。
5.如权利要求3所述的散热装置,其特征在于:该第二弯折段呈120度弯折。
6.如权利要求3所述的散热装置,其特征在于:该第一弯折段及第二弯折段的弯折处均呈弧线状过度。
7.如权利要求3所述的散热装置,其特征在于:该第一弯折段及第二弯折段的厚度均小于该平板段的厚度。
8.如权利要求3所述的散热装置,其特征在于:该平板段包括设于该第一及第二弯折段之间的第一平板段及设于第二弯折段外侧的第二平板段,每一第二平板段外缘靠近两端的位置分别形成一向下弯折的卡片及与卡片相对应的凹陷,相邻前一散热鳍片的卡片抵靠于相邻后一散热鳍片的凹陷内。
9.如权利要求2所述的散热装置,其特征在于:该散热装置还包括一用于与热源接触的基座,该基座包括一用于与热源接触的底板及一固定于该底板上的盖板,该盖板与底板共同形成一收容热管蒸发部的容置空间。
10.如权利要求9所述的散热装置,其特征在于:该盖板设有供热管冷凝部穿设的穿孔,盖板底部向上凹陷形成所述容置空间,该容置空间与所述穿孔相连通。
11.如权利要求9所述的散热装置,其特征在于:该盖板底部向下凸设若干凸柱,该底板对应凸柱位置形成收容所述凸柱的圆孔。
12.一种散热装置,包括至少一热管及穿设于该热管上的若干散热鳍片,其特征在于:该散热鳍片包括至少两种呈不同角度弯折的第一弯折段及第二弯折段。
13.如权利要求12所述的散热装置,其特征在于:该第一弯折段的弯折角度小于第二弯折段的弯折角度。
14.如权利要求13所述的散热装置,其特征在于:该第一弯折段至少部分呈60度弯折。
15.如权利要求13所述的散热装置,其特征在于:该第二弯折段至少部分呈120度连续弯折。
16.如权利要求12所述的散热装置,其特征在于:该第二弯折段分设于第一弯折段两侧,该第一弯折段与第二弯这段之间分别连接有一可供热管穿设的第一平板段。
17.如权利要求16所述的散热装置,其特征在于:该第二弯折段外缘分别形成一第二平板段,每一第二平板段外缘靠近两端的位置分别形成一向下弯折的卡片及与卡片相对应的凹陷,相邻前一散热鳍片的卡片抵靠于相邻后一散热鳍片的凹陷内。
CNU2005200599601U 2005-06-10 2005-06-10 散热装置 Expired - Fee Related CN2842733Y (zh)

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