200521333 九、發明說明： 【發明所屬之技術領域】 本發明係有_-種「離心式風扇之扇葉單元」，尤其指 一種散熱之離心式風扇之扇葉結構。 【先前技術】 台灣半導體及資訊產業在近年來成長相當迅速，其中更有 多項的產品居於世界領先地位，隨著科技的進步產品亦逐漸朝 向间性月b、同頻率、南速度與輕薄化的方向演進，且晶片尺寸 逐漸微型化，造成電子元件的發熱密度越來越高，而在高溫狀 態下運作的電子產品容易產生不穩定現象，所以熱量能否妥善 的排除已成為目則產品研發成敗的關鍵之一。 在過去由於電腦發熱量不大，對散熱系統的要求不高，現 在的電腦計算速度加快，功能強大，為有效的解決電子元件散 熱的問題，進而將電子元件產生之熱量帶出至機殼外部，通 常，在其内部加裝一些散熱機構，例如熱吸管 (thermosyphon)、熱管（heat pipe)與散熱片（以扯以业） 等幫助電子元件及系統整體散熱，然，在考慮經濟效益及散熱 功能兼具時，由風扇（fan)搭配散熱片（heatsink)所構成 的散熱系統，較能被一般使用者所接受，風扇葉輪經由動力裝 置帶動將電能轉換為機械能，能量藉由葉片的傳遞致使氣體流 動，用以增加空間内的對流係數，而利用壓力變化及速度掸加 200521333 所產生的流動，直接將熱量從散熱片上帶走而達散熱的目的， 仁疋為了在有限的使用空間提昇散熱系統的散熱量，風扇的 設計便成為重要的研究課題。 而一般最常使用在散熱上的風扇為軸流式及離心式兩 種’其中離心式風扇其氣體流動方向呈徑向，或與軸垂直，葉 輪轉動時，氣體由葉輪中心進入，藉由氣體本身之離心力之作 用獲得能量’由於氣體係沿著葉片作輻射狀流出，故葉片之形 狀會影響整個風機之性能，故，依其葉片之形式可分為⑻後 彎曲型、⑹徑向型及(c)前彎曲型等三種，且由於離心式風扇 之風壓較高’故常·阻力較大的系統中，又_離心式風扇 内的流場十分複雜，流體進人葉輪中心後，隨葉輪迴轉成徑 向，如此流體在葉輪时產生回流（reeirculatiQn)、逆流 (⑽福flow)及越分離（separatiQn)的現象，使的 葉輪内的流場變得複雜，因此，如何改善這賴題，以提升散 熱效果係目前研究所注重的目標。 請參閱第-、二圖係為一般習知離心式風扇之扇葉結構， 其係具有—赌11及複數個沿著輪轂11周_外延伸之扇葉 12 ’該等扇葉12係骑狀的形成於輪穀周圍，並在該等扇葉 12之徑向方向加以變化’例如該等扇葉12靠近輪章支u之一 側，即該扇葉係呈平直狀（如第—圖示）；或者該等扇葉η由 輪叙11之-端至靠近外側之—端，完全的雛向彎曲（如第 200521333 二圖示）。 、貝參閱第二、四、五圖係為該風扇樞設於殼體内之示咅 圖’如圖示係包含有一上殼體13及一下殼體14，其中該上= 體13於其表面開設-第-透孔131，該下殼體14於其表_ 設-第二透孔141，域上殼體13及下殼體Μ係可組合成一 體並進而界定-蜗形流道15以容設該輪穀^及該等扇葉 12 ’且該上殼體13及下殼體14之一侧形成有一出口 16連通 該堝形流道15，當該輪穀11及該等扇葉12轉動時，進而吸鲁 入4 ’即該流體分別由第一透孔131及第二透孔進入， 而旋轉的動力令流體順扇葉12向外輻射後，再沿著該蜗形流 道15朝出口 16吹出。 然，上述該等扇葉12其軸向方向係為直線形，當吸入流 體時在第一透孔131&第二透孔141所能產生的風壓應該是相 Π的仁疋，在貫際應用上有其問題所在，該流體由第一透孔 131及第二透孔mi流入時，由於第一透孔13丨及第二透孔· 的流入條件不同（例如第二透孔141處設有複數支撐肋），當 出口 16處的阻抗略高時，流體不會完全由出口 16流出，而這 一些未能流出的流體會由第一透孔131或第二透孔141逆流 、 出，如此不僅降低第一透孔131或第二透孔141處之流入的流 · 體里’且逆流的流體亦會與流入的流體產生撞擊而增加風扇的 噪音。 7 200521333 、緣是’麵於上述f用品所衍生的各項缺點，本案之 人為增進本s更臻於完善，遂竭其d峨事該行業多:月 經驗，潛心研究加以創新改良，終於成功研發完成二^ 杈組機構」案，實為—具功效增進之發明。 … 【發明内容】 差此，為有效解決上述之問題，本發明之主要目的乃係 在提供-種在輪烟齡向設置複触—第—麵及一第一 扇葉，以控制不同流體的流人處的流人勤，進而增加入風 量及減少噪音之特性。 為了達上述之目的本發明之「離心式風扇之扇葉單元」， 至少包含有一輪轂及複數連接於該輪轂周圍之扇葉，其係具 有-第-葉片部及一第二葉片部，該第—葉片部與第二葉片 部係呈不連接狀，且該第—葉片及第二料係呈軸向設置。 本案另-構思係至少包含有-輪穀及複數連接於該輪較 周圍之扇葉，其係具有—第—葉片部及—第二葉片部，該第 -葉片部與第二葉片部係呈連接狀，且該第—葉片及第二葉 片係呈軸向設置。 本發明之上述目的及其結構與功能上的特性，將依據所 附圖式之較佳實施例予以說明’俾得一更深入之瞭解。 【實施方式】 本發明係提供-種「離心式風扇之扇葉單元」，圖示係為 200521333 本發明較佳實_，請參閱第六、七_為本發明第一較佳實 施例，如圖示至少包含有—輪較21及複數扇葉22，該等扇葉 22係連接於該輪較21觸，且每-扇S 22係具有-根部221 及一第一葉片部222、一第二葉片部223，該根部221的-端 連接於輪21顯’另—端係向外分別延伸設有該第一葉片 口P 222及第一葉片部223 ’而在本較佳實施例中該第一葉片部 222與第二葉片部223的數量相同且呈不連接狀軸向設置，即 。亥第葉片部222及第二葉片223部係呈上下位置關係的排列 設置，且該第一葉片部222的徑向彎曲方向及彎曲角度係與該 第二葉片部223不同，即如第七圖所示該第一葉片部222係構 形於該等第二葉片部223與鄰近第二葉片部223之間，又即呈 分叉狀。 凊繼績參閱第八、九、十圖係為本發明樞設於殼體内之示 意圖，如圖示係包含有一上殼體23及一下殼體24，其中該上 殼體23於其表面開設一第一透孔231，該下殼體24於其表面 開設一第二透孔241，且該上殼體23及下殼體24係可組合成 一體，並進而界定一蜗形流道25以容設該輪轂21及該等扇葉 22，且該上殼體23及下殼體24之一側形成有一出口 26連通 該堝形流道25，當該輪轂21及該等扇葉22轉動時，進而吸 入流體，即該流體分別由第一透孔231及第二透孔241進入， 通過該複數扇葉22之每一扇葉22與鄰近一扇葉22之間的流 200521333 道後，_旋轉的動力令流體順每—扇葉22向外輻射，再机 =_道25朝出口吹出’而當流體分別由第-透孔2; J一，241流入扇葉22與扇葉22之間，藉由該扇葉22 ，片部222及第二葉片部挪成轴向上下設置，及該第 -葉片部222係構形於該等第期部如與鄰近第二葉 223之間’俾防止因該出口 26的阻抗增大，造成每一流道間 之部分流體產生逆流朝第一透孔231或第二透·流出，改 善習知因流體舰邮造絲體流量齡，亦具有減少因逆流 的流體與流人的流體撞擊產生之嚼音之特性。 又所述之第-葉片部222及第二葉片部挪，其數量可以 不相同（如第十—圖所示）’其厚度可以相同或不相同（無圖 不），且其胁f曲之方向（如第十二断示）及角度（無圖 不）可以相同，亦可達上述之作用及功效。 請參閱第十三、十四、十五、十六圖所示，係為本發明 第二較佳實酬，其整體結構與魏及實施鶴大致與前一 實施例相同’在此即不魏相同結構作航其符絲示，其 不同處係為該複數扇葉32之根部321向外延狀每一第一葉 片部322及第二葉片部323在本較佳實施例中係呈連接狀。 另外該第-葉片部322及第二葉片部323之剖視圖可為 兩個相反的三角形軸向連接設置（如第十五圖所示），或為兩 個相反的弧形軸向連接設置（如第十六圖所示），俾可達上述 200521333 之作用及功效。 請參閱第十七、十人圖所示，係為本發明第三較佳實施 例，其整體結構與功能及實施型態大致麟—實施例相同， 在此即不贅述相騎構個及其符號表示，其不_係為該 複數扇葉42之根部421向外延伸之第一葉片部422及第二葉 片部423係部分呈連接狀，部分呈不連接狀及分叉狀ϋ 達上述實施例之功效及作用。 -綜上所述，本發明所提供之一種「離心式風扇之扇葉單 確符合軒專利之要件，銳法如專辦請，祈請* 予專利，實為感禱。 〜 惟以上所述者’僅係本發明讀佳可狀實施例而已， 舉凡利用本發社述之方法、雜、構造、裝置所為之變化， 皆應包含於本案之權利範圍内。 【圖式簡單說明】 =圖係為-般習知離心式風扇之第—種缝結構示意圖； 圖係為―般習知離心式風扇之第二_葉結構示意圖； 二圖係為-般習知離心式風扇應用於—上下殼體内之分解 第四圖 係為一般習知離心4 jgj卢麻ra 雕。式風扇應用於-上下殼體内之 組合示意圖； 第五圖係為第四圖之剖視示意圖; 200521333 第六圖係為本發明第一較佳實施例之立體示意圖； 第七圖係為本發明第一較佳實施例之俯視示意圖； 第八圖係為本發明第一較佳實施例應用於上下殼體之分解示 意圖； 第九圖係為本發明第一較佳實施例應用於上下殼體之組合示 思圖， 第十ffi係為本_第一較佳實施例應用於上下殼體之剖視示 意圖； · 第十一圖係為本發明第一較佳實施例之第一葉片部及第二葉 片部之另一態樣俯視示意圖； 第十-圖係為本發明第—較佳實施例之第—葉片部及第二葉 片部之再另一態樣俯視示意圖； 第十三圖係為本發明第二較佳實施例之立體示意圖； 第十四圖係為本發明第二較佳實施例之第一葉片部及第二葉 片部之剖視示意圖； _ 第十五圖係為本發明第二較佳實施例之第—葉片部及第二葉 片部另一態樣之剖視示意圖； 第十/、圖係為本發明第二較佳實施例之第一葉片部及第二葉 片部再另-態樣之剖視示意圖； ‘ 第十七圖係為本發明第三較佳實酬之立體示意圖； 第十八圖係為本發明第三較佳實施例之俯視示意圖。 12 200521333 【主要元件符號說明】 11 · ••輪轂 12 · · •扇葉 13 · ••上殼體 131 · · •第一透孔 14 · ••下殼體 141 · · •第二透孔 15 · ••堝形流道 16 · · •出口 21 · ••輪轂 22 · · •扇葉 221 · ••根部 222 · · •第一葉片部 223 · ••第二葉片部 23 · · •上殼體 231 · ••第一透孔 24· · •下殼體 241 · ••第二透孔 25 · · •堝形流道 26 · ••出口 32 · · •扇葉 321 · ••根部 322 · · •第一葉片部 323 · ••第二葉片部 42 · · •扇葉 421 · ••根部 422 · · •第一葉片部 423 · ••第二葉片部200521333 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a "blade unit of a centrifugal fan", particularly a fan structure of a centrifugal fan that dissipates heat. [Previous technology] Taiwan's semiconductor and information industry has grown rapidly in recent years, and many of its products have taken the lead in the world. With the advancement of science and technology, products have gradually moved towards interstellar months, the same frequency, southern speed and thinness. The direction evolves, and the chip size is gradually miniaturized, which causes the heating density of electronic components to become higher and higher, and electronic products that operate at high temperatures are prone to instability. Therefore, whether the heat can be properly removed has become the goal of product development. One of the keys. In the past, due to the small amount of heat generated by the computer, the requirements for the cooling system were not high. Today's computers have faster calculation speeds and powerful functions. In order to effectively solve the problem of heat dissipation of electronic components, the heat generated by the electronic components is taken out of the casing. Generally, some heat dissipation mechanisms such as thermosyphons, heat pipes, and heat sinks are used to help the overall cooling of electronic components and systems. However, considering economic benefits and heat dissipation, When both functions are available, the cooling system composed of a fan and a heatsink is more acceptable to general users. The fan impeller drives the power device to convert electrical energy into mechanical energy, and the energy is transmitted through the blades. Cause the gas to flow to increase the convection coefficient in the space, and use the pressure change and speed to increase the flow generated by 200521333 to directly remove the heat from the heat sink to achieve the purpose of heat dissipation. In order to improve the limited use of space The heat dissipation of the cooling system and the design of the fan have become important research topics. The most commonly used fans for heat dissipation are axial and centrifugal fans. The centrifugal fans have a radial flow direction or perpendicular to the axis. When the impeller rotates, the gas enters from the center of the impeller. The energy of the centrifugal force itself is used to obtain energy. Because the gas system flows out radially along the blade, the shape of the blade will affect the performance of the entire fan. Therefore, according to the shape of the blade, it can be divided into ⑻back curved type, ⑹radial type, and (c) There are three types such as front bending type, and because of the high wind pressure of the centrifugal fan, so the system with high resistance and high resistance, the flow field in the centrifugal fan is very complicated. After the fluid enters the center of the impeller, it follows the blade. The impeller is turned into a radial direction, so that the fluid generates reeirculatiQn, reverse flow, and separatiQn when the impeller makes the flow field in the impeller complicated. Therefore, how to improve this problem In order to improve the cooling effect, the current research focuses on the goal. Please refer to the first and second pictures for the fan blade structure of the conventional centrifugal fan, which has-gambling 11 and a plurality of fan blades 12 extending along the periphery of the wheel hub 11 'These fan blades 12 are riding shapes Is formed around the wheel valley and is changed in the radial direction of the fan blades 12 '. For example, the fan blades 12 are close to one side of the wheel branch branch u, that is, the fan blade system is straight (as shown in FIG. (Shown); or the fan blades η are completely curved from the-end of wheel 11 to the end near the outer side (as shown in the second figure of 200521333). See the second, fourth, and fifth drawings for the illustration of the fan pivoted in the casing. As shown in the figure, the upper casing 13 and the lower casing 14 are included, where the upper body 13 is on the surface. Opening-the first through-hole 131, the lower case 14 on its surface_setting-the second through-hole 141, the domain upper case 13 and the lower case M series can be combined into one and further define a snail-shaped flow channel 15 to The wheel valley ^ and the fan blades 12 ′ are accommodated, and an outlet 16 is formed on one side of the upper casing 13 and the lower casing 14 to communicate with the pot-shaped flow passage 15. When the wheel valley 11 and the fan blades 12 are formed, When rotating, the fluid is further sucked in 4 ′, that is, the fluid enters through the first through-hole 131 and the second through-hole, and the rotating power causes the fluid to radiate outward along the fan blade 12 and then along the snail-shaped flow channel 15 Blow out toward the exit 16. However, the axial direction of the above-mentioned fan blades 12 is linear, and the wind pressure that can be generated in the first through-holes 131 & the second through-holes 141 when inhaling fluid should be relative to each other, There is a problem in the application. When the fluid flows in from the first through hole 131 and the second through hole mi, the inflow conditions of the first through hole 13 and the second through hole are different (for example, the second through hole 141 is provided at There are multiple supporting ribs), when the impedance at the outlet 16 is slightly higher, the fluid will not completely flow out of the outlet 16, and these fluids that fail to flow out will flow countercurrently and out through the first through hole 131 or the second through hole 141. In this way, not only the inflow flow in the first through-hole 131 or the second through-hole 141 is reduced, but also the countercurrent fluid will collide with the inflow fluid and increase the noise of the fan. 7 200521333, the reason is' faced with the various shortcomings derived from the above-mentioned supplies, the people in this case have done more to improve this product, and have exhausted many things in this industry: monthly experience, intensive research and innovation to improve, and finally succeed The case of “Research and Development of the“ Two Branch Organizations ”is really an invention with enhanced effectiveness. … [Summary of the Invention] In order to effectively solve the above problems, the main purpose of the present invention is to provide-a kind of re-contact-the first surface and a first leaf in the smoke age, to control the different fluids. The flow of people in the flow of people, thereby increasing the amount of incoming air and reducing the characteristics of noise. In order to achieve the above-mentioned object, the "centrifugal fan blade unit" of the present invention includes at least a hub and a plurality of blades connected to the periphery of the hub. The blade unit includes a first blade portion and a second blade portion. -The blade part and the second blade part are not connected, and the first blade and the second material are arranged axially. The other idea of this case includes at least-the wheel valley and a plurality of fan blades connected to the periphery of the wheel, which have-a first blade portion and a second blade portion, and the first blade portion and the second blade portion are present. Connected, and the first blade and the second blade are arranged axially. The above object of the present invention, its structure and functional characteristics will be explained according to the preferred embodiments of the drawings, to gain a deeper understanding. [Embodiment] The present invention provides a kind of "centrifugal fan blade unit", and the illustration is 200521333. The preferred embodiment of the present invention, please refer to the sixth and seventh embodiments of the present invention. The illustration includes at least a wheel 21 and a plurality of blades 22. The blades 22 are connected to the wheel 21, and each fan S 22 has a root 221 and a first blade portion 222. Two blade portions 223, the-end of the root portion 221 is connected to the wheel 21, and the other end is respectively provided with the first blade opening P 222 and the first blade portion 223 ', and in the preferred embodiment, the The first blade portions 222 and the second blade portions 223 have the same number and are arranged axially in a disconnected manner, that is, they are not connected. The first blade portion 222 and the second blade portion 223 are arranged in an up-and-down positional relationship, and the radial bending direction and bending angle of the first blade portion 222 are different from the second blade portion 223, that is, as shown in the seventh figure. The first blade portion 222 is configured between the second blade portions 223 and the adjacent second blade portions 223, that is, it is bifurcated.凊 Refer to the eighth, ninth, and tenth drawings for the schematic diagram of the invention pivoted in the casing. As shown in the figure, it includes an upper casing 23 and a lower casing 24, wherein the upper casing 23 is opened on its surface. A first through hole 231, the lower case 24 has a second through hole 241 on its surface, and the upper case 23 and the lower case 24 can be combined into one body, and further define a snail-shaped flow channel 25 to The hub 21 and the blades 22 are accommodated, and an outlet 26 is formed on one side of the upper casing 23 and the lower casing 24 to communicate with the pot-shaped flow channel 25. When the hub 21 and the blades 22 rotate, Then, the fluid is sucked in, that is, the fluid enters through the first through-holes 231 and the second through-holes 241 respectively. After passing through the flow between each blade 22 of the plurality of blades 22 and an adjacent blade 22, 200521333, _rotate The power causes the fluid to radiate outwards—the blade 22 radiates outward, and then the machine = _ channel 25 blows out toward the exit ', and when the fluid flows from the first through hole 2; J-1, 241 flows between the blade 22 and the blade 22, With the fan blade 22, the blade portion 222 and the second blade portion are arranged axially up and down, and the first blade portion 222 is configured in the first period portion as adjacent to the first portion. Between the leaves 223, the resistance of the outlet 26 is increased to prevent part of the fluid between each flow channel from flowing back to the first through-hole 231 or the second through-flow. The age also has the characteristic of reducing the chewing sound caused by the impact of countercurrent fluid and flowing fluid. The number of the first-blade portion 222 and the second-blade portion can be different (as shown in the tenth figure), and the thicknesses can be the same or different (there are no pictures). The direction (as shown in the twelfth section) and the angle (without picture) can be the same, and the above-mentioned functions and effects can also be achieved. Please refer to the thirteenth, fourteenth, fifteenth, and sixteenth figures, which are the second best actual rewards of the present invention. Its overall structure is similar to that of Wei and its implementation. The same is true of the previous embodiment. The same structure is used to show its runes, and the difference is that the root 321 of the plurality of fan blades 32 extends outward, and each of the first blade portion 322 and the second blade portion 323 is connected in this preferred embodiment. In addition, the cross-sectional views of the first blade portion 322 and the second blade portion 323 may be provided by two opposite triangular axial connections (as shown in FIG. 15), or two opposite curved axial connection settings (such as (Shown in Figure 16), it can achieve the above-mentioned effects and effects of 200521333. Please refer to the figures of the seventeenth and tenth people. This is the third preferred embodiment of the present invention, and its overall structure, function, and implementation type are roughly similar to the embodiment. The embodiments are the same. The symbol indicates that the first blade portion 422 and the second blade portion 423 extending outward from the root portion 421 of the plurality of fan blades 42 are partially connected and partially unconnected and bifurcated. The efficacy and role of cases. -To sum up, the "leaf sheet of the centrifugal fan really meets the requirements of the Xuan patent. If Ruifa does it, please ask for a patent *, which is really a prayer. ~ Only the above The 'only' is the embodiment of the present invention. For example, any changes made by using the methods, miscellaneous, structures, and devices described in this publication should be included in the scope of rights in this case. [Schematic description] = Figure It is the schematic diagram of the first kind of slit structure of the general-known centrifugal fan; the diagram is the schematic diagram of the second leaf structure of the general-known centrifugal fan; the second diagram is the general-purpose centrifugal fan Exploded inside the case. The fourth picture is the commonly known centrifugal 4 jgj Lu Ma ra carving. The application of the fan-the schematic diagram of the upper and lower cases; the fifth picture is the cross-sectional diagram of the fourth picture; 200521333 sixth The diagram is a schematic perspective view of the first preferred embodiment of the present invention; the seventh diagram is a schematic plan view of the first preferred embodiment of the present invention; the eighth diagram is the first preferred embodiment of the present invention applied to the upper and lower casings Exploded view; The ninth figure is the invention A combination of a preferred embodiment applied to the upper and lower casings. The tenth ffi is a schematic cross-sectional view of the first preferred embodiment applied to the upper and lower casings. The eleventh embodiment is the first embodiment of the present invention. A schematic plan view of another aspect of the first blade portion and the second blade portion of the preferred embodiment; the tenth-picture is a second blade portion and the second blade portion of the first preferred embodiment of the present invention. A schematic top view of the aspect; a thirteenth view is a perspective view of the second preferred embodiment of the present invention; a fourteenth view is a cross-section view of the first and second blade parts of the second preferred embodiment of the present invention Schematic diagram; _ The fifteenth diagram is a schematic sectional view of the second aspect of the second preferred embodiment of the present invention-the blade part and the second blade part; the tenth /, the diagram is the second preferred embodiment of the present invention The first blade part and the second blade part of the example are another schematic view of cross-section; 'The seventeenth figure is a three-dimensional schematic diagram of the third best actual reward of the present invention; the eighteenth figure is the third preferred embodiment of the present invention. Top view of the preferred embodiment. 12 200521333 [Description of main component symbols] 11 · •• Hub 12 • • • Blade 13 • • • Upper case 131 • • • First through hole 14 • • • Lower case 141 • • • Second through hole 15 • Exit 21 • • • Hub 22 • • • Fan blade 221 • • • Root 222 • • • First blade section 223 • • • Second blade section 23 • • • Upper case 231 • • • First through hole 24 · · • Lower housing 241 · • · Second through hole 25 · · • Caged runner 26 · • · Outlet 32 · · • Fan blade 321 · • • Root 322 · · • First blade portion 323 · •• Second blade section 42 · · • Fan blade 421 · • • Root section 422 · · • First blade section 423 · • • Second blade section
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