201132855 六、發明說明： 【發明所屬之技術頌威】 [0001]本發明涉及一種散熱風扇，特別係指一種適甩於電子元 件散熱的散熱風扇及其轉子。 【先前技術】201132855 VI. Description of the Invention: [Technology of the Invention] [0001] The present invention relates to a heat dissipation fan, and more particularly to a heat dissipation fan and a rotor thereof suitable for heat dissipation of electronic components. [Prior Art]
[0002] 隨著電子技術的飛速發展，中央處理器等發熱電子元件 運行速度越來越快’其運行時產生的熱量亦相應増加， 為了將這些熱量散發出去以保障電子元件的正常運行， 業界採用風扇對電子元件進行散熱，傳統的風扇通常包 括-定子、-轉子及收容所述定子及轉子的—扇框，該 轉子包括-雜及從環設於該輪穀外圍的複數扇葉，通 電時疋子產生的磁場與轉子相互作用驅動轉子相對 定子及扇框高速旋轉，扇葉旋轉時產生S力將熱量散發 出去〜匕種思扇存在以下問題：-、為保證轉子的正 常運打’扇葉的末端與扇框之間必須存在—定間隙，因 而在 裝配^'間内使扇葉的尺寸受到限制 ，從而限 制了風扇的散熱性能；二、風扇高轉時，每一扇葉 的侧面I成為迎風面，相對的另一侧面形成為背風面 ’於鄰近所述背風面的區域分卿成請，因而氣流通 常趨向於通過屬葉的端部從扇葉的迎風面㈣向負壓區 域’即’產生渴流，從而產生較大的脅音。 【發明内容】 [0003] [0004] —種轉子，包括 輪較及設於輪較外圍的複數扇葉，每 099109490 表單編號A0101 第3頁/共16頁 0992016872-0 201132855 一扇葉包括一迎風面及一與迎風面相對的背風面，該轉 子還包括環設於扇葉外圍並與扇葉外端相連的一環形壁 ，該環形壁上於相鄰的兩扇葉之間形成一穿孔，該穿孔 靠近沿轉子的旋轉方向上位於前方的扇葉的背風面設置 〇 [0005] —種散熱風扇，包括一底座及安裝於底座上的一轉子， 散熱風扇的軸向兩側分別形成一入風口及一出風口，該 轉子包括一輪轂及設於輪轂外圍的複數扇葉，每一扇葉 包括一迎風面及一與迎風面相對的背風面，該轉子還包 括環設於扇葉外圍並與扇葉外端相連的一環形壁，該環 形壁上於相鄰的兩扇葉之間形成一穿孔，該穿孔靠近順 沿轉子的旋轉方向上位於前方的扇葉的背風面設置。 [0006] 與習知技術相比，本發明中扇葉與環形壁相連，且環形 壁上於鄰近每一扇葉的背風面的地方設有穿孔，工作時 ，扇葉高速旋轉於鄰近每一扇葉的背風面形成低壓區， 環形壁隨同扇葉轉動而導引氣流流向出風口，由於扇葉 與環形壁之間無間隙，因而在同等大小的空間下，所述 扇葉較傳統風扇的扇葉可以獲得更大的尺寸，從而提升 了風扇的風量，同時，空氣通過穿孔從環形壁的外部進 入環形壁的内部並直接導向扇葉的背風面的低壓區，從 而可以補足壓強並減少旋流，在增加風量的同時大大減 小了散熱風扇工作時產生的噪音。 【實施方式】 [〇〇〇7] 以下參照附圖，對本發明散熱風扇及其轉子予以進一步 說明。 099109490 表單編號A0101 第4頁/共16頁 0992016872-0 201132855 [0008] 請參閱則，該散熱風扇包括1座1〇、安裝於該底座1〇 上的—定子（圖未示）及裝設於該定子外圍的-轉子30 〇 [0009] 請同時參關2,底座1Q包括1形的支撐部12、㈣ ⑽部12相互_且同心的—環形的鎖固部13及從i撑 部12周緣向外延伸以連接切部12與鎖固部U的數根肋 條U。該細0於支_2與顧部13之間形成一出風 口22。該支撐部12的中央向上凸設形成-中柱m[0002] With the rapid development of electronic technology, the heat-generating electronic components such as the central processing unit are running faster and faster, and the heat generated during operation is correspondingly increased. In order to dissipate the heat to ensure the normal operation of the electronic components, the industry The fan is used to dissipate heat from the electronic component. The conventional fan usually includes a stator, a rotor, and a fan frame for accommodating the stator and the rotor. The rotor includes a plurality of blades and a plurality of blades disposed on the periphery of the wheel valley. The magnetic field generated by the scorpion interacts with the rotor to drive the rotor to rotate at a high speed relative to the stator and the fan frame. When the blade rotates, the S force is generated to dissipate the heat. The following problems exist in the fan: - To ensure the normal operation of the rotor There must be a fixed gap between the end of the fan blade and the fan frame, so that the size of the fan blade is limited within the assembly, thereby limiting the heat dissipation performance of the fan. 2. When the fan is turned high, each blade is The side I becomes the windward side, and the other side is formed such that the leeward side is separated from the area adjacent to the leeward side, so that the airflow generally tends to pass The ends of the genus leaves generate a thirsty flow from the windward side (four) of the blade to the negative pressure area ',', thereby generating a large lash. SUMMARY OF THE INVENTION [0003] A rotor, including a wheel and a plurality of blades disposed on the periphery of the wheel, each 099109490 Form No. A0101 Page 3 / Total 16 Pages 0992016872-0 201132855 A leaf includes a windward And a leeward surface opposite to the windward side, the rotor further comprising an annular wall disposed around the periphery of the blade and connected to the outer end of the blade, the annular wall forming a perforation between the adjacent two blades The perforation is disposed near the leeward side of the fan blade located in the direction of rotation of the rotor. [0005] A cooling fan includes a base and a rotor mounted on the base, and the axial sides of the cooling fan respectively form an inlet a tuyere and an air outlet, the rotor includes a hub and a plurality of blades disposed on a periphery of the hub, each blade includes a windward surface and a leeward surface opposite to the windward side, the rotor further comprising a ring disposed on the periphery of the blade and An annular wall connected to the outer end of the blade, the annular wall forming a perforation between the adjacent two blades, the perforation being disposed adjacent to the leeward side of the blade located forward in the direction of rotation of the rotor. [0006] Compared with the prior art, in the present invention, the blade is connected to the annular wall, and the annular wall is provided with a perforation adjacent to the leeward side of each blade. When working, the blade rotates at a high speed adjacent to each other. The leeward side of the fan blade forms a low pressure zone, and the annular wall rotates along with the fan blade to guide the airflow to the air outlet. Since there is no gap between the fan blade and the annular wall, the fan blade is more conventional than the fan in the same size space. The fan blade can be made larger in size, thereby increasing the air volume of the fan. At the same time, the air enters the inside of the annular wall from the outside of the annular wall through the perforation and directly guides the low pressure region of the leeward surface of the blade, thereby filling the pressure and reducing the rotation. The flow, while increasing the air volume, greatly reduces the noise generated when the cooling fan is working. [Embodiment] [〇〇〇7] Hereinafter, a heat radiating fan and a rotor thereof according to the present invention will be further described with reference to the accompanying drawings. 099109490 Form No. A0101 Page 4 / Total 16 Pages 0992016872-0 201132855 [0008] Please refer to the case, the cooling fan includes a 1-pole, a stator (not shown) mounted on the base 1〇 and mounted on The stator-rotor 30 〇 [0009] please also participate in the 2, the base 1Q includes a 1-shaped support portion 12, (4) (10) portion 12 mutual_and concentric-annular locking portion 13 and the periphery of the i-support portion 12 Extending outwardly to connect the cut portion 12 with the plurality of ribs U of the lock portion U. The thin 0 forms an air outlet 22 between the branch 2 and the portion 13. The center of the support portion 12 is convexly formed upwardly to form a middle column m
G 承（圖未示）收容於中柱122内。鎖固部13從外周緣水平 向外突出延伸形成複數定位部丨6。賴定位部丨6沿鎖固 部13的圓周方向等間隔設置。每一定位部16大致呈半圓 形’其中央形成-固定孔16〇。使用時，後數固定件，如 螺絲等分別穿設該®定孔16〇以將散減_定於所需位 置。 [0010] ο 轉子30包括-位於中央的輪轂32、從輪轂32外圍向外呈 放射狀延伸的複數扇葉36及環設於所述扇葉36外圍的一 環形壁38。該環形壁38與扇葉36—禮成型，環形壁38的 頂端形成一入風口 21。該輪轂32包括一圓形的頂壁321、 從頂壁321的周緣向下垂直延伸的一環形的側壁322及從 頂壁321的中央向下垂直延伸的一轉轴（圖未示）。組裝 時，該轉子30通過轉軸插設於軸承内而與定子相互連接 。每一扇葉36包括與輪數32的側壁322連接的一内端36〇 及與該内端360相對並與環形壁38連接的一外端362。所 述扇葉36相對該轉子3〇中心的轴線X-X呈傾斜設置，且每 一扇葉36的内端360相對軸線χ-χ傾斜的角度小於其外端 099109490 表單編號A0101 第5頁/共16頁 0992016872-0 201132855 362相對軸線X-X傾斜的角度，從而使得每一扇葉36具有 較大面積。工作時，所述轉子30順時針或者逆時針方向 高速旋轉，每一扇葉36包括一迎風面365及一與迎風面 365相對的背風面366。本實施例中，轉子30的旋轉方向 從圖1中散熱風扇的頂端向下看為順時針方向，所述扇葉 36的迎風面365分別面向出風口 22，背風面366分別面向 入風口 21。 [0011] 該環形壁38的高度與輪轂32的側壁322的高度大致相等， 其包括一靠近入風口21的的頂端部分381及一靠近出風口 22的底端部分383。該環形壁38的頂端部分381的直徑沿 軸線X-X從入風口 21向出風口 22所在方向逐漸減小，即該 頂端部分381從入風口 21向出風口 22的方向呈漸縮狀，從 而起到導引氣流的作用，該底端部分383的直徑沿轴線X-X不變。該環形壁38上設有複數穿孔39。所述穿孔39沿環 形壁38的圓周方向等間隔分佈，每一穿孔39對應位於相 鄰的兩扇葉36之間，且靠近沿轉子30旋轉方向上位於前 方的一扇葉36的背風面366處。本實施例中，該穿孔39呈 彎月形。如圖3所示，每一穿孔39的外圍輪廓包括順沿扇 葉36的外端362傾斜延伸的第一弧面393及連接該第一弧 面393兩端的第二弧面3 94。該第二弧面394的曲率大於 第一弧面393的曲率，第一弧面393和第二弧面394之間 的距離自穿孔39的中央向兩端逐漸減小。該第一弧面393 相對軸線X-X傾斜的角度與扇葉36的外端362相對軸線X-X傾斜的角度相等，每一穿孔39的第一弧面393與對應扇 葉36的背風面366共面。 099109490 表單編號A0101 第6頁/共16頁 0992016872-0 201132855 [0012] Ο ο 099109490 工作時’扇葉36與環形壁38共同高速旋轉，在扇葉扣的 背風面36 6上產生氣流，從而在鄰近每一扇葉36的背風面 366的區域形成低壓區，氣流從轉子30頂端的入風口 21泸 軸流方向產生，並且從出風口22排出，從而對發熱電子 凡件（圖未示）進行散熱。由於環形壁38與扇葉36共同 旋轉’扇葉36與環形壁38之間無需形成間隙，因而在同 等大小的空間下，扇葉36的尺寸比傳統風扇的扇葉的尺 寸大，從而提升了散熱風扇的風量。由於在鄰近扇葉36 的背風面366的區域分別形成低壓區，氣流通常趨向於通 過扇葉36的外側緣從屬葉36的背風面366流向扇葉36的 迎風面365 ’即產生漩流’而環形壁38上於鄰近每—扇葉 36的背風面366處形成穿孔，因此窣氣可以通過穿孔扣從 環升> 壁3 8的外部直接進入環形壁3 8的内部的低壓區，以 補足所述低壓區的壓強，避免旋流的產生，從而減小噪 音並增加了風量。另外，由於環形壁38與扇葉36 —體成 型，因此於扇葉36旋轉的過程中，設置於環形壁38上的 穿孔3 9與扇葉3 6之間可以保持相同的相對位置，即屬葉 36旋轉時所述穿孔39始終位於靠近扇葉36的背風面36β 的負壓區的地方，從而保證從穿孔39進入的氣流可以較 好的補足低壓區的壓強，使該散熱風扇具有更好的進風 的效果，而穿孔39的傾斜方向與扇葉36的傾斜方向相同 ’其第一弧面393與對應扇葉36的背風面366共面，可以 使得散熱風扇内部流場更為順暢。另一方面，扇葉36的 外端362與環形壁38連接，與傳統風扇中扇葉高速旋轉而 外框靜止的結構相比可以避免扇葉3 6高速運轉時氣流揸 擊靜止的外框而產生噪音，使得在提升風扇的散熱致果 表單編號Α0101 第7頁/共16頁 0992016872-0 201132855 的同時進一步降低了噪音。 [0013] [0014] [0015] [0016] [0017] [0018] [0019] 099109490 圖4所示為本發明第二實施例中所採用的轉子4〇的側視圖 ’與上述第一實施例中的轉子30的不同在於：該轉子40 的環形壁48上於相鄰的兩扇葉36之間靠近前方扇葉36的 背風面366處分別設有第一穿孔491和第二穿孔492。所 述第一穿孔491和第二穿孔丨92均靠近扇葉36旋轉時於鄰 近扇葉36的背風面366所形成的低壓區’使得空氣可以通 過第一、第二穿孔491、492從環形壁49的外部直接進入 環形壁49的内部的低壓區’以補足所述低壓區的壓強’ 避免產生旋流、滅小嗓音並增加了風量。 可以理解的，本發明散熱風扇所採用的轉子不限於上述 實施方式，其中轉子的環形壁上的穿孔的形狀、位置和 數量均可以根據具體的使用需求而作調整’主要使得穿 孔分別位於相鄰兩扇葉之間且靠近沿轉子旋轉方向上位 於前方的扇葉的背風面設置即可。 綜上所述，本發明符合發明專利之要件，爰依法提出專 利申請。惟以上所述者僅為本發明之較佳實施例’舉凡 熟悉本案技藝之人士 ’在爰依本發明精神所作之等效修 飾或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 圖1為本發明散熱風扇第一實施例的立體分解圖。 圖2為圖1的立體組裝圖。 圖3為圖1中轉子的側視圖。 圖4為本發明散熱風扇第二實施例所採用的轉子的側視圖 表單編號 A0101 第 8 頁/共 16 S 0992016872-0 201132855 [0020] 【主要元件符號說明】 底座：10 [0021] 支撐部：12 [0022] 中柱：122 [0023] 鎖固部：13 [0024] 肋條：14 〇 [0025] 定位部：16 [0026] 固定孔：16 0 [0027] 入風口 ： 21 [0028] 出風口 ： 22 [0029] 轉子：30 [0030] 輪較· 3 2 Ο [0031] 頂壁：321 [0032] 側壁：322 [0033] 扇葉：36 [0034] 内端：360 [0035] 外端：362 [0036] 迎風面：365 [0037] 背風面：366 099109490 表單編號Α0101 第9頁/共16頁 0992016872-0 201132855 [0038] 環形壁： 38 [0039] 頂端部分 ：381 [0040] 底端部分 ：383 [0041] 穿孔：39 [0042] 第一弧面 ：393 [0043] 第二弧面 ：394 [0044] 轉子：40 [0045] 環形壁： 48 [0046] 第一穿孔 ：491 [0047] 第二穿孔 ：492 099109490 表單編號 A0101 第 10 頁/共 16 頁 0992016872-0The G bearing (not shown) is housed in the center pillar 122. The locking portion 13 projects horizontally outward from the outer periphery to form a plurality of positioning portions 丨6. The locating portions 丨6 are provided at equal intervals in the circumferential direction of the lock portion 13. Each of the positioning portions 16 has a substantially semicircular shape 'the center thereof is formed with a fixing hole 16'. When in use, the rear fixing members, such as screws, are respectively threaded through the ® fixed holes 16 to set the scatter_ to the desired position. [0010] The rotor 30 includes a centrally located hub 32, a plurality of blades 36 extending radially outwardly from the periphery of the hub 32, and an annular wall 38 disposed around the periphery of the blade 36. The annular wall 38 is formed with the blade 36, and the top end of the annular wall 38 forms an air inlet 21. The hub 32 includes a circular top wall 321 , an annular side wall 322 extending vertically downward from the periphery of the top wall 321 , and a rotating shaft (not shown) extending vertically downward from the center of the top wall 321 . When assembled, the rotor 30 is inserted into the bearing through the rotating shaft to be connected to the stator. Each of the blades 36 includes an inner end 36A coupled to the side wall 322 of the wheel 32 and an outer end 362 opposite the inner end 360 and coupled to the annular wall 38. The fan blade 36 is disposed obliquely with respect to the axis XX of the center of the rotor 3〇, and the inner end 360 of each blade 36 is inclined at an angle relative to the axis χ-χ is smaller than the outer end thereof 099109490 Form No. A0101 Page 5 / Total Page 16 0992016872-0 201132855 362 is inclined at an angle relative to the axis XX such that each blade 36 has a larger area. In operation, the rotor 30 rotates at a high speed in a clockwise or counterclockwise direction. Each of the blades 36 includes a windward surface 365 and a leeward surface 366 opposite the windward surface 365. In the present embodiment, the rotation direction of the rotor 30 is viewed from the top end of the heat dissipation fan in Fig. 1 as a clockwise direction, and the windward surface 365 of the blade 36 faces the air outlet 22, respectively, and the leeward surface 366 faces the air inlet 21, respectively. [0011] The height of the annular wall 38 is substantially equal to the height of the side wall 322 of the hub 32. It includes a top end portion 381 adjacent the air inlet opening 21 and a bottom end portion 383 adjacent the air outlet opening 22. The diameter of the top end portion 381 of the annular wall 38 gradually decreases from the air inlet 21 to the air outlet 22 along the axis XX, that is, the top end portion 381 is tapered from the air inlet 21 to the air outlet 22, thereby The diameter of the bottom end portion 383 is constant along the axis XX as a function of the pilot air flow. A plurality of perforations 39 are provided in the annular wall 38. The perforations 39 are equally spaced along the circumferential direction of the annular wall 38, each perforation 39 being located between adjacent two blades 36 and adjacent to the leeward side 366 of a blade 36 located forward in the direction of rotation of the rotor 30. At the office. In this embodiment, the through hole 39 has a meniscus shape. As shown in FIG. 3, the peripheral contour of each of the perforations 39 includes a first curved surface 393 that extends obliquely along the outer end 362 of the blade 36 and a second curved surface 3 94 that connects the ends of the first curved surface 393. The curvature of the second curved surface 394 is greater than the curvature of the first curved surface 393, and the distance between the first curved surface 393 and the second curved surface 394 gradually decreases from the center to the both ends of the through hole 39. The first curved surface 393 is inclined at an angle relative to the axis X-X that is equal to the angle at which the outer end 362 of the blade 36 is inclined relative to the axis X-X, and the first curved surface 393 of each of the perforations 39 is coplanar with the leeward surface 366 of the corresponding blade 36. 099109490 Form No. A0101 Page 6 / Total 16 Pages 0992016872-0 201132855 [0012] ο ο 099109490 When working, the fan blade 36 rotates at a high speed together with the annular wall 38, generating airflow on the leeward side 36 6 of the blade buckle, thereby The region adjacent to the leeward surface 366 of each of the blades 36 forms a low pressure region, and the airflow is generated from the axial flow direction of the air inlet 21 at the top end of the rotor 30, and is discharged from the air outlet 22, thereby performing heat generating electronic parts (not shown). Cooling. Since the annular wall 38 rotates together with the blade 36, there is no need to form a gap between the blade 36 and the annular wall 38. Therefore, in the same size space, the size of the blade 36 is larger than that of the conventional fan blade, thereby improving the size. The air volume of the cooling fan. Since the low pressure zones are respectively formed in the regions adjacent the leeward faces 366 of the fan blades 36, the airflow generally tends to flow through the leeward faces 366 of the slave blades 36 to the windward faces 365 of the fan blades 36 through the outer edges of the blades 36, i.e., creating a swirling flow. A perforation is formed in the annular wall 38 adjacent the leeward surface 366 of each of the blades 36, so that helium can pass directly from the outside of the wall 38 through the perforated buckle to the low pressure region of the interior of the annular wall 38 to complement The pressure in the low pressure zone avoids the generation of swirl, thereby reducing noise and increasing air volume. In addition, since the annular wall 38 is integrally formed with the blade 36, during the rotation of the blade 36, the perforation 39 disposed on the annular wall 38 and the blade 36 can maintain the same relative position. The perforation 39 is always located near the negative pressure zone of the leeward surface 36β of the blade 36 when the blade 36 rotates, thereby ensuring that the airflow entering from the perforation 39 can better compensate the pressure in the low pressure zone, making the cooling fan better. The effect of the air inlet, and the inclination direction of the perforation 39 is the same as the inclination direction of the blade 36. The first arc surface 393 is coplanar with the leeward surface 366 of the corresponding blade 36, which makes the internal flow field of the cooling fan smoother. On the other hand, the outer end 362 of the blade 36 is connected to the annular wall 38. Compared with the structure in which the blade of the conventional fan rotates at a high speed and the frame is stationary, the outer frame of the airflow slamming at the high speed of the blade 36 can be avoided. Noise is generated, which further reduces noise while lifting the fan's heat dissipation result number Α0101 Page 7 of 16 pages 0992016872-0 201132855. [0015] [0019] [0019] [0019] FIG. 4 is a side view of the rotor 4〇 used in the second embodiment of the present invention and the first embodiment described above. The rotor 30 is different in that the annular wall 48 of the rotor 40 is provided with a first through hole 491 and a second through hole 492 respectively between the adjacent two blades 36 near the leeward surface 366 of the front blade 36. The first perforation 491 and the second perforated crucible 92 are both close to the low pressure region formed by the leeward surface 366 of the adjacent fan blade 36 when the blade 36 rotates so that air can pass through the first and second perforations 491, 492 from the annular wall. The outside of the 49 directly enters the low pressure zone ' inside the annular wall 49 to compensate for the pressure in the low pressure zone' to avoid swirling, small tones and increased air volume. It can be understood that the rotor used in the heat dissipation fan of the present invention is not limited to the above embodiment, wherein the shape, position and number of the perforations on the annular wall of the rotor can be adjusted according to specific use requirements, mainly so that the perforations are respectively adjacent to each other. The leeward side of the blade between the two blades and adjacent to the front in the direction of rotation of the rotor may be disposed. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. It is to be understood that the above-mentioned preferred embodiments of the present invention are intended to be equivalent to the modifications and variations of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing a first embodiment of a heat dissipation fan of the present invention. FIG. 2 is an assembled, isometric view of FIG. 1. FIG. Figure 3 is a side elevational view of the rotor of Figure 1. Figure 4 is a side view of the rotor used in the second embodiment of the heat-dissipating fan of the present invention. Form No. A0101 Page 8 of 16 S 0992016872-0 201132855 [0020] [Main component symbol description] Base: 10 [0021] Support: 12 [0022] Center column: 122 [0023] Locking part: 13 [0024] Rib: 14 〇 [0025] Positioning part: 16 [0026] Fixing hole: 16 0 [0027] Air inlet: 21 [0028] Air outlet : 22 [0029] Rotor: 30 [0030] Wheel comparison · 3 2 Ο [0031] Top wall: 321 [0032] Side wall: 322 [0033] Fan blade: 36 [0034] Inner end: 360 [0035] Outer end: 362 [0036] Windward side: 365 [0037] leeward side: 366 099109490 Form number Α 0101 Page 9 / Total 16 pages 0992016872-0 201132855 [0038] Ring wall: 38 [0039] Top part: 381 [0040] Bottom part : 383 [0041] Perforation: 39 [0042] First curved surface: 393 [0043] Second curved surface: 394 [0044] Rotor: 40 [0045] Annular wall: 48 [0046] First perforation: 491 [0047] Second perforation: 492 099109490 Form number A0101 Page 10 of 16 0992016872-0