TWM525398U - Centrifugal fan - Google Patents

Centrifugal fan Download PDF

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Publication number
TWM525398U
TWM525398U TW104216181U TW104216181U TWM525398U TW M525398 U TWM525398 U TW M525398U TW 104216181 U TW104216181 U TW 104216181U TW 104216181 U TW104216181 U TW 104216181U TW M525398 U TWM525398 U TW M525398U
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Taiwan
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centrifugal fan
air inlet
impeller
substrate
disposed
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TW104216181U
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Chinese (zh)
Inventor
謝錚玟
廖文能
余順達
林光華
張家源
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宏碁股份有限公司
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Priority to TW104216181U priority Critical patent/TWM525398U/en
Publication of TWM525398U publication Critical patent/TWM525398U/en

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Abstract

A centrifugal fan includes a housing, a blocking element, an impeller, and an driving element. The housing includes a base, a side wall, and a top board. The base includes an inlet. The side wall is disposed on the base, and includes an outlet. The top board is disposed on the side wall, and faces the base. The base, the side wall, and the top board form a receiving chamber. The blocking element is disposed on the base adjacent to the edge of the inlet. The impeller is disposed in the chamber. The driving element is disposed on the impeller, and configured to drive the impeller to rotate about an axis. The blocking element is close to the outlet relative to the axis.

Description

離心式風扇 Centrifugal fan

本創作主要關於一種離心式風扇,尤指一種設置於電子裝置內之離心式風扇。 The present invention relates to a centrifugal fan, and more particularly to a centrifugal fan disposed in an electronic device.

一般之筆記型電腦中設置了離心式風扇,以將外部之空氣由筆記型電腦之底部吸入,並由筆記型電腦之側面排出,藉以對筆記型電腦之內部進行散熱。 A general-purpose notebook computer has a centrifugal fan that draws outside air from the bottom of the notebook computer and discharges it from the side of the notebook computer to dissipate heat from the inside of the notebook computer.

然而,離心式風扇卻可能會將部分由筆記型電腦之側面所排出的熱空氣再次吸入,進而影響了散熱效能。一般習知之作法為將由筆記型電腦之側面的熱空氣朝斜上方排出,然而熱空氣可能會吹向使用者之手部,因此降低了使用上之舒適感。或是將離心式風扇遠離筆記型電腦之側面,但會因此降低風扇之散熱效率。 However, the centrifugal fan may inhale some of the hot air discharged from the side of the notebook, which affects the heat dissipation performance. It is conventional practice to discharge the hot air from the side of the notebook computer obliquely upward, but hot air may blow toward the user's hand, thereby reducing the comfort of use. Or move the centrifugal fan away from the side of the notebook, but it will reduce the cooling efficiency of the fan.

因此筆記型電腦之散熱機構必須重新加以設計與改良,以增加離心式風扇之散熱效率。 Therefore, the heat dissipation mechanism of the notebook computer must be redesigned and improved to increase the heat dissipation efficiency of the centrifugal fan.

本創作之目的為提供一種離心式風扇,其可設置於薄型電子裝置之內部,並於其上設置了止擋元件,以降低由由離心式風扇之進風口吸入電子裝置之側邊所吹出的熱風的量,進而增加離心式風扇的散熱效率。 The purpose of the present invention is to provide a centrifugal fan which can be disposed inside a thin electronic device and is provided with a stop member for reducing the blown from the side of the electronic device by the air inlet of the centrifugal fan. The amount of hot air increases the heat dissipation efficiency of the centrifugal fan.

為了達到上述之目的,本創作提供了一種離心式 風扇,包括一殼體、一止擋元件、一葉輪、以及一驅動元件。殼體包括一基板、一側壁、以及一頂板。基板包括一進風口。側壁設置於該基板,且包括一出風口。頂板設置於該側壁,並朝向該基板。該基板、該側壁與該頂板之間形成一容置腔。止擋元件設置於該基板,且鄰近於該進風口之邊緣。葉輪設置於該容置腔內。驅動元件設置於該葉輪,並用以驅動該葉輪以一軸線為軸心旋轉。該止擋元件相對於該軸線鄰近於該出風口。 In order to achieve the above objectives, the present invention provides a centrifugal type The fan includes a housing, a stop element, an impeller, and a drive element. The housing includes a substrate, a side wall, and a top plate. The substrate includes an air inlet. The sidewall is disposed on the substrate and includes an air outlet. The top plate is disposed on the side wall and faces the substrate. A receiving cavity is formed between the substrate, the sidewall and the top plate. A stop element is disposed on the substrate and adjacent to an edge of the air inlet. The impeller is disposed in the accommodating cavity. The driving component is disposed on the impeller and is configured to drive the impeller to rotate on an axis. The stop element is adjacent to the air outlet relative to the axis.

於一些實施例中,該止擋元件沿該進風口之邊緣延伸,且止擋元件之長度為進風口之周長的1/6至1/5之間。 In some embodiments, the stop element extends along the edge of the air inlet and the length of the stop element is between 1/6 and 1/5 of the circumference of the air inlet.

於一些實施例中,該止擋部沿一弧形路徑延伸,且與該葉輪相互間隔。 In some embodiments, the stop extends along an arcuate path and is spaced from the impeller.

於一些實施例中,該基板具有連接於該出風口之一出風部,且該止擋元件鄰近於該出風部。 In some embodiments, the substrate has an air outlet connected to the air outlet, and the stop element is adjacent to the air outlet.

於一些實施例中,該進風口包括遠離該出風口之一主進風區域以及鄰近該出風口之一次進風區域,其中該止擋元件於一軸向上覆蓋該次進風區域,且該軸向平行於該軸線。 In some embodiments, the air inlet includes a main air inlet area away from the air outlet and an air inlet area adjacent to the air outlet, wherein the stopping element covers the secondary air inlet area in an axial direction, and the axial direction Parallel to the axis.

於一些實施例中,該止擋元件包括一連接部以及一止擋部。該連接部設置於該基板之一外表面,以及該止擋部連接於該連接部。該止擋部於一軸向上覆蓋該進風口之邊緣,其中該軸向平行於該軸線。 In some embodiments, the stop element includes a connecting portion and a stop. The connecting portion is disposed on an outer surface of the substrate, and the stopping portion is connected to the connecting portion. The stop covers the edge of the air inlet in an axial direction, wherein the axial direction is parallel to the axis.

於一些實施例中,該進風口沿一平面延伸,且該止擋部與該平面相互間隔。該止擋部為一板狀結構。 In some embodiments, the air inlet extends along a plane and the stops are spaced from the plane. The stop is a plate-like structure.

於一些實施例中,該葉輪更包括一輪轂、以及多個設置於該輪轂之扇葉,其中該止擋部於一軸向上覆蓋該扇 葉,但並未覆蓋該輪轂。 In some embodiments, the impeller further includes a hub, and a plurality of blades disposed on the hub, wherein the stop covers the fan in an axial direction. Leaves, but did not cover the hub.

於一些實施例中,該驅動元件包括連接於該葉輪之一轉軸,該轉軸沿該軸線延伸,且該驅動元件經由該轉軸驅動該葉輪旋轉。 In some embodiments, the drive member includes a shaft coupled to the impeller, the shaft extends along the axis, and the drive member drives the impeller to rotate via the shaft.

綜上所述,本創作之離心式風扇,止擋元件能有效的止擋由電子裝置之側邊所吹出之熱風經由離心式風扇之進風口吸入,進而增加了離心式風扇的散熱效率。 In summary, the centrifugal fan of the present invention can effectively stop the hot air blown by the side of the electronic device from being sucked through the air inlet of the centrifugal fan, thereby increasing the heat dissipation efficiency of the centrifugal fan.

1‧‧‧離心式風扇 1‧‧‧ centrifugal fan

10‧‧‧殼體 10‧‧‧shell

11‧‧‧基板 11‧‧‧Substrate

111‧‧‧基板本體 111‧‧‧Substrate body

112‧‧‧進風口 112‧‧‧Air inlet

113‧‧‧出風部 113‧‧‧Outlet Department

114‧‧‧外表面 114‧‧‧ outer surface

12‧‧‧側壁 12‧‧‧ side wall

121‧‧‧出風口 121‧‧‧air outlet

13‧‧‧頂板 13‧‧‧ top board

131‧‧‧通氣孔 131‧‧‧Ventinel

20‧‧‧葉輪 20‧‧‧ Impeller

21‧‧‧輪轂 21‧‧·wheels

22‧‧‧扇葉 22‧‧‧ fan leaves

30‧‧‧驅動元件 30‧‧‧ Drive components

31‧‧‧轉軸 31‧‧‧ shaft

40‧‧‧止擋元件 40‧‧‧stop element

41‧‧‧連接部 41‧‧‧Connecting Department

42‧‧‧止擋部 42‧‧‧stop

AX1‧‧‧軸線 AX1‧‧‧ axis

A1‧‧‧電子裝置 A1‧‧‧Electronic device

A11‧‧‧機殼 A11‧‧‧Chassis

A12‧‧‧主機板 A12‧‧‧ motherboard

A13‧‧‧底部開口 A13‧‧‧ bottom opening

A14‧‧‧側向開口 A14‧‧‧ lateral opening

D1‧‧‧軸向 D1‧‧‧ axial

S1‧‧‧容置腔 S1‧‧‧ 容室

Z1‧‧‧主進風區域 Z1‧‧‧ main air intake area

Z2‧‧‧次進風區域 Z2‧‧‧ intake area

第1圖為本創作之離心式風扇的立體圖。 Fig. 1 is a perspective view of the centrifugal fan of the present invention.

第2圖為本創作之離心式風扇的俯視圖。 Figure 2 is a top view of the centrifugal fan of the present invention.

第3圖為本創作之離心式風扇的移除基板之俯視圖。 Fig. 3 is a plan view showing the removal substrate of the centrifugal fan of the present invention.

第4圖為第2圖之AA端面的剖視示意圖。 Fig. 4 is a cross-sectional view showing the AA end surface of Fig. 2;

第5圖為設置有離心式風扇之薄型電子裝置的示意圖。 Fig. 5 is a schematic view of a thin electronic device provided with a centrifugal fan.

以下之說明提供了許多不同的實施例、或是例子,用來實施本創作之不同特徵。以下特定例子所描述的元件和排列方式,僅用來精簡的表達本創作,其僅作為例子,而並非用以限制本創作。例如,第一特徵在一第二特徵上或上方的結構之描述包括了第一和第二特徵之間直接接觸,或是以另一特徵設置於第一和第二特徵之間,以致於第一和第二特徵並不是直接接觸。 The following description provides many different embodiments, or examples, for implementing different features of the present invention. The elements and permutations described in the following specific examples are only used to simplify the present invention, which is merely an example and is not intended to limit the present invention. For example, the description of the structure of the first feature on or above a second feature includes direct contact between the first and second features, or another feature disposed between the first and second features such that The first and second features are not in direct contact.

使用於此之空間上相關的詞彙,例如向下(beneath)、下方(below)、較低(lower)、上方(above)、或較高 (upper)等,用以簡易描述圖式上之一元件或一特徵相對於另一元件或特徵之關係。空間上相關的詞彙意指除了圖式上描述的方位外,包括於不同之方位使用或是操作之裝置。上述裝置可以其他方式定向(旋轉90度或是於其他方位)以及使用於此之空間上的相關描述也可依此來解釋。 Use spatially related terms such as bottome, below, lower, above, or higher The use of one element or one element in relation to another element or feature is briefly described. Spatially related terms are meant to include devices that are used or operated in different orientations in addition to the orientations depicted in the drawings. The above described means may be otherwise oriented (rotated 90 degrees or at other orientations) and the associated description of the space used therein may also be interpreted accordingly.

第1圖為本創作之離心式風扇1的立體圖。第2圖為 本創作之離心式風扇1的俯視圖。第3圖為本創作之離心式風扇1的移除基板11之俯視圖。第4圖為第2圖之AA端面剖視示意圖。 Fig. 1 is a perspective view of the centrifugal fan 1 of the present invention. Figure 2 shows A top view of the centrifugal fan 1 of the present invention. Fig. 3 is a plan view showing the substrate 11 of the centrifugal fan 1 of the present invention. Fig. 4 is a cross-sectional view showing the AA end face of Fig. 2;

離心式風扇1包括一殼體10、一葉輪20、一驅動元 件30、以及一止擋元件40。殼體10包括一基板11、一側壁12、以及一頂板13。基板11與頂板13相互間隔且大致平行。頂板13設置於側壁12,並朝向基板11。側壁12連接於基板11與頂板13,且大致垂直於基板11與頂板13。基板11、側壁12、以及頂板13之間形成一容置腔S1。 The centrifugal fan 1 includes a casing 10, an impeller 20, and a driving element. A member 30, and a stop member 40. The housing 10 includes a substrate 11, a side wall 12, and a top plate 13. The substrate 11 and the top plate 13 are spaced apart from each other and are substantially parallel. The top plate 13 is disposed on the side wall 12 and faces the substrate 11. The side wall 12 is connected to the substrate 11 and the top plate 13 and is substantially perpendicular to the substrate 11 and the top plate 13. A receiving cavity S1 is formed between the substrate 11, the side wall 12, and the top plate 13.

基板11包括一基板本體111、一進風口112、以及一 出風部113。基板本體111可為一板狀結構。進風口112形成於基板本體111之一外表面114,且與容置腔S1相互連通。出風部113連接於基板本體111,並突出於外表面114。於本實施例中,出風部113位於基板11之邊緣。 The substrate 11 includes a substrate body 111, an air inlet 112, and a Outlet portion 113. The substrate body 111 may be a plate-like structure. The air inlet 112 is formed on one outer surface 114 of the substrate body 111 and communicates with the accommodating cavity S1. The air outlet portion 113 is coupled to the substrate body 111 and protrudes from the outer surface 114. In the present embodiment, the air outlet portion 113 is located at the edge of the substrate 11.

如第3圖所示,側壁12為一U型結構。側壁12包括 連通於容置腔S1之一出風口121。於本實施例中,出風口121可由出風部113、側壁12以及頂板13之邊緣所形成,換句話說出風部113連接於出風口121。藉由出風部113突出於基板本體 111之外表面114,可擴大出風口121之面積,藉以增加離心式風扇1之出風量。頂板13具有多個通氣孔131,對應於進風口112。 As shown in Fig. 3, the side wall 12 is a U-shaped structure. Side wall 12 includes It is connected to one of the air outlets 121 of the accommodating cavity S1. In the present embodiment, the air outlet 121 may be formed by the edge of the air outlet portion 113, the side wall 12, and the top plate 13, in other words, the air outlet portion 113 is connected to the air outlet 121. Projecting from the substrate body by the air outlet portion 113 The outer surface 114 of the 111 can enlarge the area of the air outlet 121, thereby increasing the air volume of the centrifugal fan 1. The top plate 13 has a plurality of vent holes 131 corresponding to the air inlets 112.

葉輪20設置於容置腔S1內。葉輪20包括一輪轂 21、多個扇葉22、以及一固定環23。扇葉22以放射狀間隔排列於輪轂21之側面。如第3圖所示,扇葉22與側壁12相互間隔。 固定環23連接每一扇葉22之邊緣,以藉以穩定葉輪20之旋轉,以及扇葉22之間的相對位置。 The impeller 20 is disposed in the accommodating cavity S1. The impeller 20 includes a hub 21. A plurality of blades 22 and a retaining ring 23. The blades 22 are arranged at a radial interval on the side of the hub 21. As shown in Fig. 3, the blade 22 and the side wall 12 are spaced apart from each other. A retaining ring 23 connects the edges of each of the blades 22 to stabilize the rotation of the impeller 20 and the relative position between the blades 22.

驅動元件30固定於頂板13,且設置於葉輪20。驅 動元件30用以驅動葉輪20以一軸線AX1為軸心旋轉,上述軸線AX1平行於軸向D1。於本實施例中,驅動元件30包括一轉軸31。轉軸31連接於葉輪20之輪轂21的內部,且沿軸線AX1以及軸向D1延伸。驅動元件30經由轉軸31帶動葉輪20旋轉。 The driving element 30 is fixed to the top plate 13 and is disposed on the impeller 20. drive The moving element 30 is used to drive the impeller 20 to rotate about an axis AX1, and the axis AX1 is parallel to the axial direction D1. In the present embodiment, the drive member 30 includes a shaft 31. The rotating shaft 31 is coupled to the inside of the hub 21 of the impeller 20 and extends along the axis AX1 and the axial direction D1. The drive element 30 drives the impeller 20 to rotate via the rotating shaft 31.

止擋元件40設置於基板11之基板本體111的外表面 114,且與葉輪20相互間隔。於本實施例中,止擋元件40與基板11一體成型,於另一實施例中,止擋元件40以扣合的或是可拆卸的方式固定於基板11上。 The stopper member 40 is disposed on the outer surface of the substrate body 111 of the substrate 11 114 and spaced apart from the impeller 20. In the present embodiment, the stop element 40 is integrally formed with the substrate 11. In another embodiment, the stop element 40 is fixed to the substrate 11 in a snap-fit or detachable manner.

止擋元件40相對於軸線AX1鄰近於進風口112以及 基板11之出風部113。止擋元件40鄰近於進風口112之邊緣,且沿進風口112之邊緣延伸。於本實施例中,止擋元件40沿一弧形路徑延伸,弧形路徑之曲度與進風口112之曲度大致相同。 The stop element 40 is adjacent to the air inlet 112 with respect to the axis AX1 and The air outlet portion 113 of the substrate 11. The stop element 40 is adjacent the edge of the air inlet 112 and extends along the edge of the air inlet 112. In the present embodiment, the stop member 40 extends along an arcuate path having a curvature that is substantially the same as the curvature of the air inlet 112.

於一些實施例中,止擋元件40之長度為進風口112 之周長的1/6至3/5之間。止擋元件40之寬度為進風口112之半徑的1/8至2/3之間,或是1/7至1/2之間。 In some embodiments, the length of the stop element 40 is the air inlet 112. Between 1/6 and 3/5 of the circumference. The width of the stop element 40 is between 1/8 and 2/3 of the radius of the air inlet 112, or between 1/7 and 1/2.

進風口112包括遠離出風口121之一主進風區域Z1 以及鄰近出風口121之一次進風區域Z2。換句話說,主進風區域Z1與次進風區域Z2大致位於軸線AX1之兩相反側。 The air inlet 112 includes a main air inlet zone Z1 away from the air outlet 121. And an air inlet zone Z2 adjacent to the air outlet 121. In other words, the main intake air zone Z1 and the secondary air intake zone Z2 are located substantially on opposite sides of the axis AX1.

當葉輪20旋轉時,由進風口112之主進風區域Z1所 吸入空氣的量大於次進風區域Z2所吸入的量,此外,主進風區域Z1之面積大於次進風區域Z2之面積。由於於本實施例中,止擋元件40於軸向D1上覆蓋次進風區域Z2,因此止擋元件40並不會過度的影響,離心式風扇1的進風量。 When the impeller 20 rotates, the main air inlet region Z1 of the air inlet 112 The amount of intake air is larger than the amount of intake of the secondary air inlet region Z2, and the area of the main air inlet region Z1 is larger than the area of the secondary air inlet region Z2. Since the stopper member 40 covers the secondary air inlet region Z2 in the axial direction D1 in the present embodiment, the stopper member 40 does not excessively affect the air intake amount of the centrifugal fan 1.

於本實施例中,止擋元件40包括一連接部41以及 一止擋部42。連接部41設置於基板11之外表面114,連接部41相對於基板本體111之外表面114傾斜,且沿上述弧狀路徑延伸。 In this embodiment, the stop element 40 includes a connecting portion 41 and A stop portion 42. The connecting portion 41 is disposed on the outer surface 114 of the substrate 11. The connecting portion 41 is inclined with respect to the outer surface 114 of the substrate body 111 and extends along the arcuate path.

止擋部42連接於連接部41。止擋部42為一板狀結 構,且沿上述弧狀路徑延伸。止擋部42於軸向D1上覆蓋進風口112之邊緣。如第4圖所示,進風口112沿一平面延伸,且止擋部42與平面相互間隔。止擋部42於軸向D1上覆蓋扇葉22,但並未覆蓋輪轂21。 The stopper portion 42 is connected to the connecting portion 41. The stop portion 42 is a plate-like knot And extending along the arcuate path described above. The stopper portion 42 covers the edge of the air inlet 112 in the axial direction D1. As shown in Fig. 4, the air inlet 112 extends along a plane, and the stoppers 42 are spaced apart from the plane. The stopper portion 42 covers the blade 22 in the axial direction D1 but does not cover the hub 21.

藉由上述止擋元件40之結構,離心式風扇1外部之 空氣,可經由止擋元件40之兩端以及止擋部42與進風口112之間的間隙進入,藉以增加離心式風扇1的進風量。 With the structure of the above-mentioned stopper element 40, the outside of the centrifugal fan 1 The air can enter through the gap between the two ends of the stop member 40 and the stop portion 42 and the air inlet 112, thereby increasing the air intake amount of the centrifugal fan 1.

此外,於本實施例中,止擋部42相對於基板本體 111之外表面114的高度大致相等於出風部113相對於基板本體111之外表面114的高度。上述之高度沿著軸向D1而被測量。因此止擋部42並不會進一步增加離心式風扇1的厚度。 In addition, in the embodiment, the stopping portion 42 is opposite to the substrate body The height of the outer surface 114 of the 111 is substantially equal to the height of the wind outlet portion 113 with respect to the outer surface 114 of the substrate body 111. The above height is measured along the axial direction D1. Therefore, the stopper 42 does not further increase the thickness of the centrifugal fan 1.

第5圖為設置有離心式風扇1之薄型電子裝置A1的 示意圖。電子裝置A1可為一筆記型電腦或是一平板電腦。電子裝置A1包括一機殼A11以及一主機板A12。主機板A12以及離心式風扇1設置於機殼A11之內部。機殼A11具有一底部開口A13以及一側向開口A14。 Figure 5 is a thin electronic device A1 provided with a centrifugal fan 1 schematic diagram. The electronic device A1 can be a notebook computer or a tablet computer. The electronic device A1 includes a casing A11 and a motherboard A12. The main board A12 and the centrifugal fan 1 are disposed inside the casing A11. The casing A11 has a bottom opening A13 and a side opening A14.

離心式風扇1位於主機板A12以及底部開口A13之 間。離心式風扇1之進風口112朝向及對應於底部開口A13,且離心式風扇1之出風口121朝向及對應於側向開口A14。 The centrifugal fan 1 is located on the main board A12 and the bottom opening A13. between. The air inlet 112 of the centrifugal fan 1 faces and corresponds to the bottom opening A13, and the air outlet 121 of the centrifugal fan 1 faces and corresponds to the lateral opening A14.

當驅動元件30驅動葉輪20轉動時,離心式風扇1抽 取電子裝置A1外部之空氣,並產生一氣流。上述之氣流經由容置腔S1、出風口121以及側向開口A14排出於機殼A11外,並帶走。電子裝置A1內部之部分熱量。 When the driving element 30 drives the impeller 20 to rotate, the centrifugal fan 1 is pumped The air outside the electronic device A1 is taken and an air flow is generated. The airflow described above is discharged outside the casing A11 via the accommodating cavity S1, the air outlet 121, and the lateral opening A14, and is carried away. Part of the heat inside the electronic device A1.

由於止擋元件40鄰近於出風口121以及側向開口 A14,可有效的止擋由側向開口A14排出之熱風經由進風口112吸入離心式風扇1,因此於本實施例中不需要增加離心式風扇1與側向開口A14之間的距離,因此不會進一步降低離心式風扇1的散熱效率。此外,亦不需要調整側向開口A14之結構將熱風朝斜上方吹,進而造成使用上的不適。 Since the stop element 40 is adjacent to the air outlet 121 and the lateral opening A14, the hot air discharged from the lateral opening A14 can be effectively sucked into the centrifugal fan 1 via the air inlet 112, so that it is not necessary to increase the distance between the centrifugal fan 1 and the lateral opening A14 in this embodiment, so The heat dissipation efficiency of the centrifugal fan 1 is further reduced. In addition, it is not necessary to adjust the structure of the lateral opening A14 to blow the hot air upward obliquely, thereby causing discomfort in use.

此外,藉由本揭露之止擋元件40,可不需於機殼 A11之底部設置防止進風口112吸入熱空氣之一止擋肋條,因此可維持機殼A11之美觀。 In addition, with the stop element 40 of the present disclosure, the housing is not required The bottom of the A11 is provided to prevent the air inlet 112 from sucking in one of the stop ribs of the hot air, so that the appearance of the casing A11 can be maintained.

綜上所述,本創作之離心式風扇,止擋元件能有 效的止擋由電子裝置之側邊所吹出之熱風經由離心式風扇之進風口吸入,進而增加了離心式風扇的散熱效率。 In summary, the centrifugal fan of the present invention can have a stop element The effective stop is sucked by the hot air blown from the side of the electronic device through the air inlet of the centrifugal fan, thereby increasing the heat dissipation efficiency of the centrifugal fan.

本創作雖以各種實施例揭露如上,然而其僅為範 例參考而非用以限定本創作的範圍,任何熟習此項技藝者,在不脫離本創作之精神和範圍內,當可做些許的更動與潤飾。因此上述實施例並非用以限定本創作之範圍,本創作之保護範圍 當視後附之申請專利範圍所界定者為準。 Although the present invention is disclosed above in various embodiments, it is only a van. For example, and not to limit the scope of the present invention, anyone skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. Therefore, the above embodiments are not intended to limit the scope of the present invention, and the scope of protection of the present invention This is subject to the definition of the scope of the patent application.

1‧‧‧離心式風扇 1‧‧‧ centrifugal fan

10‧‧‧殼體 10‧‧‧shell

11‧‧‧基板 11‧‧‧Substrate

111‧‧‧基板本體 111‧‧‧Substrate body

112‧‧‧進風口 112‧‧‧Air inlet

113‧‧‧出風部 113‧‧‧Outlet Department

114‧‧‧外表面 114‧‧‧ outer surface

12‧‧‧側壁 12‧‧‧ side wall

121‧‧‧出風口 121‧‧‧air outlet

13‧‧‧頂板 13‧‧‧ top board

20‧‧‧葉輪 20‧‧‧ Impeller

21‧‧‧輪轂 21‧‧·wheels

22‧‧‧扇葉 22‧‧‧ fan leaves

40‧‧‧止擋元件 40‧‧‧stop element

41‧‧‧連接部 41‧‧‧Connecting Department

42‧‧‧止擋部 42‧‧‧stop

AX1‧‧‧軸線 AX1‧‧‧ axis

D1‧‧‧軸向 D1‧‧‧ axial

Claims (10)

一種離心式風扇,包括:一殼體,包括:一基板,包括一進風口;一側壁,設置於該基板,且包括一出風口;以及一頂板,設置於該側壁,並朝向該基板,其中該基板、該側壁與該頂板之間形成一容置腔;一止擋元件,設置於該基板,且鄰近於該進風口之邊緣;一葉輪,設置於該容置腔內;以及一驅動元件,設置於該葉輪,並用以驅動該葉輪以一軸線為軸心旋轉,其中該止擋元件相對於該軸線鄰近於該出風口。 A centrifugal fan includes: a casing comprising: a substrate including an air inlet; a side wall disposed on the substrate and including an air outlet; and a top plate disposed on the side wall and facing the substrate, wherein Forming a receiving cavity between the substrate, the sidewall and the top plate; a stop member disposed on the substrate adjacent to an edge of the air inlet; an impeller disposed in the receiving cavity; and a driving component The impeller is disposed to drive the impeller to rotate about an axis, wherein the stop element is adjacent to the air outlet relative to the axis. 如申請專利範圍第1項所述之離心式風扇,其中該止擋元件沿該進風口之邊緣延伸,且止擋元件之長度為進風口之周長的1/6至3/5之間。 The centrifugal fan of claim 1, wherein the stop element extends along an edge of the air inlet, and the length of the stop element is between 1/6 and 3/5 of the circumference of the air inlet. 如申請專利範圍第1項所述之離心式風扇,其中該止擋元件沿一弧形路徑延伸,且與該葉輪相互間隔。 The centrifugal fan of claim 1, wherein the stop element extends along an arcuate path and is spaced apart from the impeller. 如申請專利範圍第1項所述之離心式風扇,其中該基板具有連接於該出風口之一出風部,且該止擋元件鄰近於該出風部。 The centrifugal fan according to claim 1, wherein the substrate has an air outlet connected to the air outlet, and the stop element is adjacent to the air outlet. 如申請專利範圍第1項所述之離心式風扇,其中該進風口包括遠離該出風口之一主進風區域以及鄰近該出風口之一次進風區域,其中該止擋元件於一軸向上覆蓋該次進風區域,且該軸向平行於該軸線。 The centrifugal fan of claim 1, wherein the air inlet includes a main air inlet area away from the air outlet and an air inlet area adjacent to the air outlet, wherein the stopping element covers the axial direction a secondary air inlet region, and the axial direction is parallel to the axis. 如申請專利範圍第1項所述之離心式風扇,其中該止擋元件包括:一連接部,設置於該基板之一外表面;以及一止擋部,連接於該連接部,其中該止擋部於一軸向上覆蓋該進風口之邊緣,其中該軸向平行於該軸線。 The centrifugal fan of claim 1, wherein the stop element comprises: a connecting portion disposed on an outer surface of the substrate; and a stop portion connected to the connecting portion, wherein the stop portion The portion covers the edge of the air inlet in an axial direction, wherein the axial direction is parallel to the axis. 如申請專利範圍第6項所述之離心式風扇,其中該進風口沿一平面延伸,且該止擋部與該平面相互間隔。 The centrifugal fan of claim 6, wherein the air inlet extends along a plane, and the stopping portion is spaced apart from the plane. 如申請專利範圍第6項所述之離心式風扇,其中該止擋部為一板狀結構。 The centrifugal fan according to claim 6, wherein the stopping portion is a plate-like structure. 如申請專利範圍第6項所述之離心式風扇,其中該葉輪更包括一輪轂、以及多個設置於該輪轂之扇葉,其中該止擋部於一軸向上覆蓋該扇葉,但並未覆蓋該輪轂。 The centrifugal fan of claim 6, wherein the impeller further comprises a hub, and a plurality of blades disposed on the hub, wherein the stop covers the blade in an axial direction but is not covered The hub. 如申請專利範圍第1項所述之離心式風扇,其中該驅動元件包括連接於該葉輪之一轉軸,該轉軸沿該軸線延伸,且該驅動元件經由該轉軸驅動該葉輪旋轉。 The centrifugal fan of claim 1, wherein the driving element comprises a rotating shaft coupled to the impeller, the rotating shaft extends along the axis, and the driving element drives the impeller to rotate via the rotating shaft.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI663339B (en) * 2017-10-26 2019-06-21 宏碁股份有限公司 Heat dissipation fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI663339B (en) * 2017-10-26 2019-06-21 宏碁股份有限公司 Heat dissipation fan
US10808715B2 (en) 2017-10-26 2020-10-20 Acer Incorporated Heat dissipation fan

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