TWI708896B - Centrifugal fan - Google Patents
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Description
本發明係關於一種風扇,特別是一種離心式風扇。 The present invention relates to a fan, particularly a centrifugal fan.
隨著人們電腦使用習慣的改變,筆記型電腦已成為市面上的很重要的產品類型。筆記型電腦由於體積小且方便攜帶,人們常常會帶著筆記型電腦通勤,在辦公室做些文書處理,在咖啡店上網看些文章或影片,也有可能跟三五好友用筆記型電腦來打幾場電玩遊戲。如果使用者特別要求筆記型電腦在電玩遊戲的流暢度或者畫面細緻度,那麼需要將筆記型電腦備配更高階的處理器與顯示晶片。但是,更高階的處理器與顯示晶片伴隨著產生過多廢熱的問題,且筆記型電腦的體積受到限制,在散熱設計上往往不夠理想。 As people’s computer habits change, notebook computers have become a very important product type on the market. Because laptops are small and easy to carry, people often take laptops to commute to work, do some paperwork in the office, read some articles or videos on the Internet in coffee shops, and may also use laptops with friends to play a few times. Field video game. If the user particularly requires the fluency or screen detail of the notebook computer in video games, the notebook computer needs to be equipped with a higher-end processor and display chip. However, higher-end processors and display chips are accompanied by excessive waste heat generation, and the size of notebook computers is limited, and the heat dissipation design is often not ideal.
傳統上,有些筆記型電腦的內部設計有風扇,利用氣流將筆記型電腦內部的廢熱帶出。但是,隨著筆記型電腦的性能越來越優異,筆記型電腦所產生的廢熱也隨之劇增。因此傳統的氣冷式散熱設計將難以達到所需的散熱效果。 Traditionally, some notebook computers are designed with fans inside, which use airflow to remove waste heat inside the notebook computers. However, as the performance of notebook computers becomes more and more excellent, the waste heat generated by notebook computers also increases sharply. Therefore, the traditional air-cooled heat dissipation design will be difficult to achieve the required heat dissipation effect.
本發明在於提供一種離心式風扇,藉以提升離心式風扇的散熱效果。 The present invention is to provide a centrifugal fan, so as to improve the heat dissipation effect of the centrifugal fan.
本發明之一實施例所揭露之離心式風扇包含一外殼及一 扇葉。外殼具有一容置空間及連通容置空間的一進氣口及一出氣口。扇葉位於容置空間。扇葉包含一輪轂、多個葉片及至少一導熱環。輪轂可轉動地設置於外殼。這些葉片連接於輪轂之外周緣,至少一導熱環連接於這些葉片。 The centrifugal fan disclosed in an embodiment of the present invention includes a housing and a Fan leaves. The shell has an accommodating space and an air inlet and an air outlet communicating with the accommodating space. The fan blade is located in the accommodating space. The fan blade includes a hub, a plurality of blades and at least one heat conducting ring. The hub is rotatably arranged on the housing. The blades are connected to the outer periphery of the hub, and at least one heat conducting ring is connected to the blades.
根據上述實施例之離心式風扇,雖然這些導熱環與散熱架之導熱圈相分離,照理由相分離之導熱環與散熱架之導熱圈間的導熱方式應為熱對流,但因為導熱環與導熱圈的間距極小,使得當離心式風扇在運轉時,形成於導熱環之邊界層與形成於導熱圈之邊界層因極小間距而被破壞。也就是說,透過這些導熱環之設置,使得導熱環得以與散熱架之導熱圈間的導熱改為類似熱傳導的效果,進而進一步提升離心式風扇整體的散熱效能。 According to the centrifugal fan of the above embodiment, although these heat conducting rings are separated from the heat conducting ring of the heat sink, the heat conduction method between the separated heat conducting ring and the heat conducting ring of the heat sink should be thermal convection. The distance between the rings is extremely small, so that when the centrifugal fan is running, the boundary layer formed on the heat conducting ring and the boundary layer formed on the heat conducting ring are destroyed due to the extremely small distance. That is to say, through the arrangement of these heat-conducting rings, the heat conduction between the heat-conducting ring and the heat-conducting ring of the heat sink is changed to a similar heat conduction effect, thereby further improving the overall heat dissipation efficiency of the centrifugal fan.
以上關於本發明內容的說明及以下實施方式的說明係用以示範與解釋本發明的原理,並且提供本發明的專利申請範圍更進一步的解釋。 The above description of the content of the present invention and the description of the following embodiments are used to demonstrate and explain the principle of the present invention and provide a further explanation of the scope of the patent application of the present invention.
10:離心式風扇 10: Centrifugal fan
20:熱管 20: Heat pipe
30:散熱器 30: radiator
40:導熱架組 40: Heat conduction rack group
41:吸熱架 41: heat sink
42:散熱架 42: heat sink
50:熱源 50: heat source
100:外殼 100: shell
110:底板 110: bottom plate
120:蓋板 120: cover
200、200a、200b、200c:扇葉 200, 200a, 200b, 200c: fan blades
210、210a、210b、210c:輪轂 210, 210a, 210b, 210c: wheel hub
220、220a、220b、220c:葉片 220, 220a, 220b, 220c: blades
230、230a、230b、230c:導熱環 230, 230a, 230b, 230c: heat conducting ring
240、240a:靜音環 240, 240a: mute ring
250、250b:散熱環 250, 250b: cooling ring
421:基板 421: Substrate
422:導熱圈 422: heat conduction ring
C:凹槽 C: groove
S:容置空間 S: housing space
O1:進氣口 O1: Air inlet
O2:出氣口 O2: Outlet
圖1為根據本發明第一實施例所述之離心式風扇與熱管、散熱器及導熱架組的立體示意圖。 FIG. 1 is a three-dimensional schematic diagram of a centrifugal fan, heat pipe, radiator, and heat conducting rack assembly according to the first embodiment of the present invention.
圖2為沿圖1之2-2割面線所繪示的局部剖面示意圖。 Fig. 2 is a schematic partial cross-sectional view taken along the line 2-2 of Fig. 1.
圖3為圖1之離心式風扇之扇葉的立體示意圖。 Fig. 3 is a three-dimensional schematic diagram of the blade of the centrifugal fan of Fig. 1.
圖4為根據本發明第二實施例所述之離心式風扇之扇葉的立體示意圖。 Fig. 4 is a perspective schematic view of a fan blade of a centrifugal fan according to a second embodiment of the present invention.
圖5為圖4之局部剖面示意圖。 Fig. 5 is a schematic partial cross-sectional view of Fig. 4.
圖6為根據本發明第三實施例所述之離心式風扇之扇葉的立體示意圖。 Fig. 6 is a perspective view of a fan blade of a centrifugal fan according to a third embodiment of the present invention.
圖7為圖6之局部剖面示意圖。 Fig. 7 is a schematic partial cross-sectional view of Fig. 6.
圖8為根據本發明第四實施例所述之離心式風扇之扇葉的立體示意圖。 Fig. 8 is a three-dimensional schematic diagram of a fan blade of a centrifugal fan according to a fourth embodiment of the present invention.
圖9為圖8之局部剖面示意圖。 Fig. 9 is a schematic partial cross-sectional view of Fig. 8.
請參閱圖1至圖3。圖1為根據本發明第一實施例所述之離心式風扇與熱管、散熱器及導熱架組的立體示意圖。圖2為沿圖1之2-2割面線所繪示的局部剖面示意圖。圖3為圖1之離心式風扇之扇葉的立體示意圖。 Please refer to Figure 1 to Figure 3. FIG. 1 is a three-dimensional schematic diagram of a centrifugal fan, heat pipe, radiator, and heat conducting rack assembly according to the first embodiment of the present invention. Fig. 2 is a schematic partial cross-sectional view taken along the line 2-2 of Fig. 1. Fig. 3 is a three-dimensional schematic diagram of the blade of the centrifugal fan of Fig. 1.
本實施例之離心式風扇10適於與一熱管20、一散熱器30及一導熱架組40共同組成一散熱系統,且散熱系統適於熱耦合於一熱源50。熱源50例如為中央處理晶片、顯示晶片等高發熱元件。熱管20熱耦合於熱源50。散熱器30例如為散熱鰭片。散熱器30位於出氣口O2,並熱耦合於熱管20,以將熱源50所產生之熱量傳導至散熱器30,再透過離心式風扇10所產生之冷卻氣流將累積於散熱器30的熱量帶走。導熱架組40包含一吸熱架41及一散熱架42。吸熱架41用以供熱源50組裝,並與熱源50熱耦合。散熱架42裝設於離心式風扇10之外殼100並部分位於容置空間S內。散熱架42熱耦合於吸熱架41。如此一來,熱源50所產生之熱量除了可以透過熱管20傳導至散熱器30,
以藉由離心式風扇10之冷卻氣流帶走外,更可透過導熱架組40傳導至散熱架42,以同樣藉由離心式風扇10之冷卻氣流帶走。也就是說,除了傳統熱管20這條導熱路徑外,本實施例更增加了導熱架組40這條導熱路徑,以提升熱源50的散熱效率。
The
此外,散熱架42包含一基板421及多個導熱圈422。這些導熱圈422凸出於基板421。基板421疊設於底板110背向容置空間S之一側,且與下列之離心式風扇10之扇葉200間形成類似熱傳導之導熱效果,以透過導熱架組40將熱源50所產生的熱量傳導至離心式風扇10之扇葉200,再透過離心式風扇10所產生之氣流來將累積於扇葉200的熱量帶走。
In addition, the
離心式風扇10包含一外殼100及一扇葉200。外殼100具有一容置空間S及連通容置空間S的一進氣口O1及一出氣口O2。具體來說,外殼100包含一底板110及一蓋板120。蓋板120組裝於底板110並共同圍繞出容置空間S及出氣口O2,且進氣口O1位於蓋板120。
The
扇葉200位於容置空間S。扇葉200包含一輪轂210、多個葉片220及多個導熱環230。輪轂210可轉動地設置於外殼100。這些葉片220連接於輪轂210之外周緣。多個導熱環230連接於這些葉片220,且這些導熱環230與散熱架42之這些導熱圈422相分離,但兩者之間的間距極小。由於這些導熱環230與散熱架42之導熱圈422相分離,照理由相分離之導熱環230與散熱架42之導熱圈422間的導熱方式應為熱對流,但因為導熱環230與導熱圈422的間距極小,使得當離心式
風扇10在運轉時,形成於導熱環230之邊界層與形成於導熱圈422之邊界層因極小間距而被破壞,進而讓導熱環230與導熱圈422的導熱方式改為類似熱傳導,進而讓導熱環230與導熱圈422間的導熱達到接近熱傳導的導熱效果。
The
在本實施例中,至少一導熱環230連接於這些葉片220遠離進氣口O1之一側,但並不以此為限。在其他實施例中,若對應之散熱架之基板改裝設於外殼之頂板,則導熱環亦可連接於這些葉片靠近進氣口之一側。
In this embodiment, at least one
在本實施例中,散熱環250連接於這些導熱環230靠近進氣口O1之一側,以加大扇葉200整體之散熱面積,以進一步提升離心式風扇10的散熱效率。
In this embodiment, the
在本實施例中,靜音環240連接於這些葉片220靠近進氣口O1之一側,但並不以此為限。在其他實施例中,靜音環也可以連接於這些葉片遠離進氣口之一側。
In this embodiment, the
在本實施例中,導熱環230的數量為多個,但並不以此為限。在其他實施例中,導熱環的數量也可以僅為單個。 In this embodiment, the number of heat conducting rings 230 is multiple, but it is not limited thereto. In other embodiments, the number of heat conducting rings can also be only a single one.
在本實施例中,靜音環240連接於這些葉片220遠離輪轂210之一側,即靜音環240連接於葉片220的最末端,但並不以此為限。在其他實施例中,靜音環的位置也可以連接於葉片之中段。
In this embodiment, the
在本實施例中,這些葉片220遠離出氣口O2之一側各具有一凹槽C,至少一導熱環230位於凹槽C內。
In this embodiment, each of the
在本實施例中,葉片220採有凹槽C之設計,但並不以
此為限。在其他實施例中,葉片亦可以採無凹槽之設計,以進一步增加葉片的受風面積。
In this embodiment, the
上述實施例中,離心式風扇10之扇葉200同時包含了導熱環230、靜音環240及散熱環250之設計,但並不以此為限。請參閱圖4與圖5。圖4為根據本發明第二實施例所述之離心式風扇之扇葉的立體示意圖。圖5為圖4之局部剖面示意圖。在本實施例中,扇葉200a包含一輪轂210a、多個葉片220a、多個導熱環230a及一靜音環240a。這些葉片220a連接於輪轂210a之外周緣。多個導熱環230連接於這些葉片220a。靜音環240a連接於這些葉片220a靠近進氣口O1之一側。也就是說,本實施例之扇葉200a僅同時包含了導熱環230a與靜音環240a之設計。
In the above embodiment, the
請參閱圖6與圖7。圖6為根據本發明第三實施例所述之離心式風扇之扇葉的立體示意圖。圖7為圖6之局部剖面示意圖。在本實施例中,扇葉200b包含一輪轂210b、多個葉片220b、多個導熱環230b及一散熱環250b。這些葉片220b連接於輪轂210b之外周緣。多個導熱環230b連接於這些葉片220b。散熱環250b連接於這些導熱環230b靠近進氣口O1之一側,以加大扇葉200b整體之散熱面積,而進一步提升離心式風扇10的散熱效率。也就是說,本實施例之扇葉200b僅同時包含了導熱環230b與散熱環250b之設計。
Please refer to Figure 6 and Figure 7. Fig. 6 is a perspective view of a fan blade of a centrifugal fan according to a third embodiment of the present invention. Fig. 7 is a schematic partial cross-sectional view of Fig. 6. In this embodiment, the
請參閱圖8與圖9。圖8為根據本發明第四實施例所述之離心式風扇之扇葉的立體示意圖。圖9為圖8之局部剖面示意圖。在本實施例中,扇葉200c包含一輪轂210c、多個葉片220c及多個導熱環230c。
這些葉片220c連接於輪轂210c之外周緣。多個導熱環230c連接於這些葉片220c。也就是說,本實施例之扇葉200c僅包含了導熱環230c之設計。
Please refer to Figure 8 and Figure 9. Fig. 8 is a three-dimensional schematic diagram of a fan blade of a centrifugal fan according to a fourth embodiment of the present invention. Fig. 9 is a schematic partial cross-sectional view of Fig. 8. In this embodiment, the
根據上述實施例之離心式風扇,雖然這些導熱環與散熱架之導熱圈相分離,照理由相分離之導熱環與散熱架之導熱圈間的導熱方式應為熱對流,但因為導熱環與導熱圈的間距極小,使得當離心式風扇在運轉時,形成於導熱環之邊界層與形成於導熱圈之邊界層因極小間距而被破壞。也就是說,透過這些導熱環之設置,使得導熱環得以與散熱架之導熱圈間的導熱改為類似熱傳導的效果,進而進一步提升離心式風扇整體的散熱效能。 According to the centrifugal fan of the above embodiment, although these heat conducting rings are separated from the heat conducting ring of the heat sink, the heat conduction method between the separated heat conducting ring and the heat conducting ring of the heat sink should be thermal convection. The distance between the rings is extremely small, so that when the centrifugal fan is running, the boundary layer formed on the heat conducting ring and the boundary layer formed on the heat conducting ring are destroyed due to the extremely small distance. That is to say, through the arrangement of these heat-conducting rings, the heat conduction between the heat-conducting ring and the heat-conducting ring of the heat sink is changed to a similar heat conduction effect, thereby further improving the overall heat dissipation efficiency of the centrifugal fan.
雖然本發明以前述之諸項實施例揭露如上,然其並非用以限定本發明,任何熟習相像技藝者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。 Although the present invention is disclosed in the foregoing embodiments as described above, it is not intended to limit the present invention. Anyone familiar with similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of patent protection for inventions shall be determined by the scope of patent applications attached to this specification.
200:扇葉 200: fan blade
210:輪轂 210: Wheel Hub
220:葉片 220: blade
230:導熱環 230: thermal ring
240:靜音環 240: Mute ring
250:散熱環 250: cooling ring
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JP2008255865A (en) * | 2007-04-04 | 2008-10-23 | Matsushita Electric Ind Co Ltd | Centrifugal fan device and electronic apparatus provided with same |
JP2016102469A (en) * | 2014-11-28 | 2016-06-02 | ミネベア株式会社 | Centrifugal fan |
TW201640026A (en) * | 2015-05-15 | 2016-11-16 | 力致科技股份有限公司 | Centrifugal cooling fan |
TWM535273U (en) * | 2016-09-21 | 2017-01-11 | 宏碁股份有限公司 | Airflow guide structure of fan |
TW201917295A (en) * | 2017-10-26 | 2019-05-01 | 宏碁股份有限公司 | Heat dissipation fan |
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TW202113235A (en) | 2021-04-01 |
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