CN112483431A - 离心式风扇 - Google Patents

离心式风扇 Download PDF

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CN112483431A
CN112483431A CN201910863207.4A CN201910863207A CN112483431A CN 112483431 A CN112483431 A CN 112483431A CN 201910863207 A CN201910863207 A CN 201910863207A CN 112483431 A CN112483431 A CN 112483431A
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heat
blades
centrifugal fan
ring
fan
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谢时昕
杨智凯
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Inventec Pudong Technology Corp
Inventec Corp
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Inventec Pudong Technology Corp
Inventec Corp
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Priority to CN201910863207.4A priority Critical patent/CN112483431A/zh
Priority to US16/694,953 priority patent/US11477910B2/en
Publication of CN112483431A publication Critical patent/CN112483431A/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
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
    • 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
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0693—Details or arrangements of the wiring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • 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
    • F28D15/0233—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 the conduits having a particular shape, e.g. non-circular cross-section, annular
    • 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
    • F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G06F1/203—Cooling means for portable computers, e.g. for laptops
    • 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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • H01L23/3672—Foil-like cooling fins or heat sinks
    • 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

Abstract

本发明公开了一种离心式风扇包括一外壳及一扇叶。外壳具有一容置空间及连通容置空间的一进气口及一出气口。扇叶位于容置空间。扇叶包括一轮毂、多个叶片及至少一导热环。轮毂可转动地设置于外壳。这些叶片连接于轮毂的外周缘。至少一导热环连接于这些叶片。

Description

离心式风扇
技术领域
本发明涉及一种风扇，特别是一种离心式风扇。
背景技术
随着人们计算机使用习惯的改变，笔记本电脑已成为市面上的很重要的产品类型。笔记本电脑由于体积小且方便携带，人们常常会带着笔记本电脑通勤，在办公室做些文字处理，在咖啡店上网看些文章或影片，也有可能跟三五好友用笔记本电脑来打几场电玩游戏。如果用户特别要求笔记本电脑在电玩游戏的流畅度或者画面细致度，那么需要将笔记本电脑配置更高阶的处理器与显示芯片。但是，更高阶的处理器与显示芯片伴随着产生过多废热的问题，且笔记本电脑的体积受到限制，在散热设计上往往不够理想。
传统上，有些笔记本电脑的内部设计有风扇，利用气流将笔记本电脑内部的废热带出。但是，随着笔记本电脑的性能越来越优异，笔记本电脑所产生的废热也随之剧增。因此传统的气冷式散热设计将难以达到所需的散热效果。
发明内容
本发明在于提供一种离心式风扇，藉以提升离心式风扇的散热效果。
本发明的一实施例所公开的离心式风扇包括一外壳及一扇叶。外壳具有一容置空间及连通容置空间的一进气口及一出气口。扇叶位于容置空间。扇叶包括一轮毂、多个叶片及至少一导热环。轮毂可转动地设置于外壳。这些叶片连接于轮毂的外周缘，至少一导热环连接于这些叶片。
根据上述实施例的离心式风扇，虽然这些导热环与散热架的导热圈相分离，照理由相分离的导热环与散热架的导热圈间的导热方式应为热对流，但因为导热环与导热圈的间距极小，使得当离心式风扇在运转时，形成于导热环的边界层与形成于导热圈的边界层因极小间距而被破坏。也就是说，通过这些导热环的设置，使得导热环得以与散热架的导热圈间的导热改为类似热传导的效果，进而进一步提升离心式风扇整体的散热效能。
以上的关于本发明内容的说明及以下的实施方式的说明用以示范与解释本发明的精神与原理，并且提供本发明的专利申请权利要求保护范围更进一步的解释。
附图说明
图1为根据本发明第一实施例所述的离心式风扇与热管、散热器及导热架组的立体图。
图2为图1的局部剖面图。
图3为图1的离心式风扇的扇叶的立体图。
图4为根据本发明第二实施例所述的离心式风扇的扇叶的立体图。
图5为图4的局部剖面图。
图6为根据本发明第三实施例所述的离心式风扇的扇叶的立体图。
图7为图6的局部剖面图。
图8为根据本发明第四实施例所述的离心式风扇的扇叶的立体图。
图9为图8的局部剖面图。
其中，附图标记：
10 离心式风扇
20 热管
30 散热器
40 导热架组
41 吸热架
42 散热架
50 热源
100 外壳
110 底板
120 盖板
200、200a、200b、200c 扇叶
210、210a、210b、210c 轮毂
220、220a、220b、220c 叶片
230、230a、230b、230c 导热环
240、240a 静音环
250、250b 散热环
421 基板
422 导热圈
C 凹槽
S 容置空间
O1 进气口
O2 出气口
具体实施方式
以下在实施方式中详细叙述本发明的详细特征以及优点，其内容足以使任何本领域的技术人员了解本发明的技术内容并据以实施，且根据本说明书所公开的内容、权利要求保护范围及附图，任何本领域的技术人员可轻易地理解本发明相关的目的及优点。以下的实施例进一步详细说明本发明的观点，但非以任何观点限制本发明的范畴。
请参阅图1至图3。图1为根据本发明第一实施例所述的离心式风扇与热管、散热器及导热架组的立体图。图2为图1的局部剖面图。图3为图1的离心式风扇的扇叶的立体图。
本实施例的离心式风扇10适于与一热管20、一散热器30及一导热架组40共同组成一散热系统，且散热系统适于热耦合于一热源50。热源50例如为中央处理芯片、显示芯片等高发热元件。热管20热耦合于热源50。散热器30例如为散热鳍片。散热器30位于出气口O2，并热耦合于热管20，以将热源50所产生的热量传导至散热器30，再通过离心式风扇10所产生的冷却气流将累积于散热器30的热量带走。导热架组40包括一吸热架41及一散热架42。吸热架41用以供热源50组装，并与热源50热耦合。散热架42装设于离心式风扇10的外壳100并部分位于容置空间S内。散热架42热耦合于吸热架41。如此一来，热源50所产生的热量除了可以通过热管20传导至散热器30，以通过离心式风扇10的冷却气流带走外，还可通过导热架组40传导至散热架42，以同样通过离心式风扇10的冷却气流带走。也就是说，除了传统热管20这条导热路径外，本实施例还增加了导热架组40这条导热路径，以提升热源50的散热效率。
此外，散热架42包括一基板421及多个导热圈422。这些导热圈422凸出于基板421。基板421叠设于底板110背向容置空间S的一侧，且与下列的离心式风扇10的扇叶200间形成类似热传导的导热效果，以通过导热架组40将热源50所产生的热量传导至离心式风扇10的扇叶200，再通过离心式风扇10所产生的气流来将累积于扇叶200的热量带走。
离心式风扇10包括一外壳100及一扇叶200。外壳100具有一容置空间S及连通容置空间S的一进气口O1及一出气口O2。具体来说，外壳100包括一底板110及一盖板120。盖板120组装于底板110并共同围绕出容置空间S及出气口O2，且进气口O1位于盖板120。
扇叶200位于容置空间S。扇叶200包括一轮毂210、多个叶片220及多个导热环230。轮毂210可转动地设置于外壳100。这些叶片220连接于轮毂210的外周缘。多个导热环230连接于这些叶片220，且这些导热环230与散热架42的这些导热圈422相分离，但两者之间的间距极小。由于这些导热环230与散热架42的导热圈422相分离，照理由相分离的导热环230与散热架42的导热圈422间的导热方式应为热对流，但因为导热环230与导热圈422的间距极小，使得当离心式风扇10在运转时，形成于导热环230的边界层与形成于导热圈422的边界层因极小间距而被破坏，进而让导热环230与导热圈422的导热方式改为类似热传导，进而让导热环230与导热圈422间的导热达到接近热传导的导热效果。
在本实施例中，至少一导热环230连接于这些叶片220远离进气口O1的一侧，但并不以此为限。在其他实施例中，若对应的散热架的基板改装设于外壳的顶板，则导热环也可连接于这些叶片靠近进气口的一侧。
在本实施例中，散热环250连接于这些导热环230靠近进气口O1的一侧，以加大扇叶200整体的散热面积，以进一步提升离心式风扇10的散热效率。
在本实施例中，静音环240连接于这些叶片220靠近进气口O1的一侧，但并不以此为限。在其他实施例中，静音环也可以连接于这些叶片远离进气口的一侧。
在本实施例中，导热环230的数量为多个，但并不以此为限。在其他实施例中，导热环的数量也可以仅为单个。
在本实施例中，静音环240连接于这些叶片220远离轮毂210的一侧，即静音环240连接于叶片220的最末端，但并不以此为限。在其他实施例中，静音环的位置也可以连接于叶片的中段。
在本实施例中，这些叶片220远离出气口O2的一侧各具有一凹槽C，至少一导热环230位于凹槽C内。
在本实施例中，叶片220采有凹槽C的设计，但并不以此为限。在其他实施例中，叶片也可以采无凹槽的设计，以进一步增加叶片的受风面积。
上述实施例中，离心式风扇10的扇叶200同时包括了导热环230、静音环240及散热环250的设计，但并不以此为限。请参阅图4与图5。图4为根据本发明第二实施例所述的离心式风扇的扇叶的立体图。图5为图4的局部剖面图。在本实施例中，扇叶200a包括一轮毂210a、多个叶片220a、多个导热环230a及一静音环240a。这些叶片220a连接于轮毂210a的外周缘。多个导热环230连接于这些叶片220a。静音环240a连接于这些叶片220a靠近进气口O1的一侧。也就是说，本实施例的扇叶200a仅同时包括了导热环230a与静音环240a的设计。
请参阅图6与图7。图6为根据本发明第三实施例所述的离心式风扇的扇叶的立体图。图7为图6的局部剖面图。在本实施例中，扇叶200b包括一轮毂210b、多个叶片220b、多个导热环230b及一散热环250b。这些叶片220b连接于轮毂210b的外周缘。多个导热环230b连接于这些叶片220b。散热环250b连接于这些导热环230b靠近进气口O1的一侧，以加大扇叶200b整体的散热面积，而进一步提升离心式风扇10的散热效率。也就是说，本实施例的扇叶200b仅同时包括了导热环230b与散热环250b的设计。
请参阅图8与图9。图8为根据本发明第四实施例所述的离心式风扇的扇叶的立体图。图9为图8的局部剖面图。在本实施例中，扇叶200c包括一轮毂210c、多个叶片220c及多个导热环230c。这些叶片220c连接于轮毂210c的外周缘。多个导热环230c连接于这些叶片220c。也就是说，本实施例的扇叶200c仅包括了导热环230c的设计。
根据上述实施例的离心式风扇，虽然这些导热环与散热架的导热圈相分离，照理由相分离的导热环与散热架的导热圈间的导热方式应为热对流，但因为导热环与导热圈的间距极小，使得当离心式风扇在运转时，形成于导热环的边界层与形成于导热圈的边界层因极小间距而被破坏。也就是说，通过这些导热环的设置，使得导热环得以与散热架的导热圈间的导热改为类似热传导的效果，进而进一步提升离心式风扇整体的散热效能。
当然，本发明还可有其他多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (10)

1.一种离心式风扇，其特征在于，包括：
一外壳，具有一容置空间及连通该容置空间的一进气口及一出气口；以及
一扇叶，位于该容置空间，该扇叶包括一轮毂、多个叶片及至少一导热环，该轮毂可转动地设置于该外壳，该些叶片连接于该轮毂的外周缘，该至少一导热环连接于该些叶片。
2.根据权利要求1所述的离心式风扇，其特征在于，该至少一导热环连接于该些叶片远离该进气口的一侧。
3.根据权利要求2所述的离心式风扇，其特征在于，该至少一导热环的数量为多个。
4.根据权利要求3所述的离心式风扇，其特征在于，该扇叶还包括一散热环，该散热环连接于该些导热环靠近该进气口的一侧。
5.根据权利要求4所述的离心式风扇，其特征在于，该扇叶还包括一静音环，该静音环连接于该些叶片靠近该进气口的一侧。
6.根据权利要求1所述的离心式风扇，其特征在于，该静音环连接于该些叶片远离该轮毂的一侧。
7.根据权利要求1所述的离心式风扇，其特征在于，该扇叶还包括一静音环，该静音环连接于该些叶片靠近该进气口的一侧。
8.根据权利要求1所述的离心式风扇，其特征在于，该静音环连接于该些叶片远离该轮毂的一侧。
9.根据权利要求1所述的离心式风扇，其特征在于，该些叶片远离该出气口的一侧各具有一凹槽，该至少一导热环位于该凹槽内。
10.根据权利要求1所述的离心式风扇，其特征在于，该外壳包括一底板及一盖板，该盖板组装于该底板并共同围绕出该容置空间，该扇叶可转动地装设于该底板。
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