M291031 八、新型說明： 【新型所屬之技術領域】 本新型是有關於一種散熱風扇，特別是指一種可達到 增加風壓的效果，同時使運轉更為順暢之外極式離心 熱風扇。 a 【先前技術】 可面上常見的小型散熱風扇M291031 VIII. New description: [New technical field] The present invention relates to a cooling fan, in particular to a pole centrifugal heat fan which can achieve an effect of increasing the wind pressure while making the operation smoother. a [Prior Art] Small cooling fan that is common on the surface
利用設置於輪轂内部之磁鐵環與定子間產生相斥力，藉以 帶動輪較及連結於輪較上的葉片相對於定子轉動 = 較佳的出風效率’此種内極式風扇必須依賴增加磁鐵環、 定子的有效通磁體積以提高兩者間的斥力，但相對地，整 個内極式風扇所佔體積便擴A，不利於裝設於體積較 電子製品中。 有鐘於此，業界已開發出一種稱為「外極式散熱風扇 」的產品’如圖丨所示般用於對中央處理器、類似之 運算處理單元，或晶片組等電子元件進行散熱之外極式散 =風扇9’主要是由—殼座91、—設於該殼座91上之扇輪 92 ’及：設於該殼座91上而罩覆該扇輪92之外框93所構 。亥设座91具有複數之磁極柱911，而該扇輪且有一 =於每-Μ 922外緣之磁鐵環似。f知外極式散熱風 =在使用時’是對該等磁極柱911通電，使每一磁極柱 ::鐵環923產生電磁效應而相互感應，進而藉該磁 Γ畏923之運轉帶動每一騎奶旋轉，即可驅動氣體流 動’以達到散熱之目的。 M291031 卜才式放熱風扇9在設計上雖然可縮小自 但於該扇輪92旋韓砗，旦你a、六、六①斗， 積’ 疋轉4，易使齓流流至該外才匡93 時因折返而回流至每_扇 土 , w 忧椒向回流之氣流 向導入之氣流相互干擾，而造成氣流方向不平穩的情 況，使«輪92難以達到穩定、順暢之運轉效果。再者， 該外極式散熱風扇9亦無可增加風壓的設計，因此，其導 引氣流及增加風壓的效果有限，特別是用於高熱元件（如 電腦主機）時，過多埶翕亨她士〜The repulsive force is generated between the magnet ring disposed inside the hub and the stator, so as to drive the wheel and the blade connected to the wheel to rotate relative to the stator = better air output efficiency. The inner pole fan must rely on increasing the magnet ring. The effective magnetic flux of the stator increases the repulsive force between the two, but in contrast, the volume of the entire inner-pole fan is increased by A, which is disadvantageous for installation in a volumetric electronic product. In view of this, the industry has developed a product called "external-pole cooling fan", which is used to dissipate heat from electronic components such as a central processing unit, a similar arithmetic processing unit, or a chipset. The outer pole type fan = the fan 9' is mainly composed of a housing 91, a fan wheel 92' disposed on the housing 91, and a frame 93 disposed on the housing 91 and covering the fan wheel 92. Structure. The cradle 91 has a plurality of magnetic poles 911, and the fan wheel has a magnet ring similar to the outer edge of each Μ 922. f knowing that the outer pole type heat dissipating wind=in use, the electric poles 911 are energized, so that each pole pole::the iron ring 923 generates an electromagnetic effect and mutually induces each other, and then the operation of the magnetic phobia 923 drives each ride. When the milk is rotated, the gas flow can be driven to achieve the purpose of heat dissipation. M291031 Bucai type heat release fan 9 can be reduced in design, but the fan wheel 92 is rotated, and you have a, six, and six 1 buckets, and the product 'turns 4, which makes it easy for the turbulent flow to the outside. At 93, it returns to each fan soil due to the reentry. w The water flow from the backflow to the incoming airflow interferes with each other, causing the airflow direction to be unstable, making it difficult for the wheel 92 to achieve stable and smooth operation. Moreover, the external-pole cooling fan 9 has no design to increase the wind pressure, and therefore, the effect of guiding the airflow and increasing the wind pressure is limited, especially when used for a high-heat component (such as a computer mainframe). She is ~
、夕熱乱水積在主機中容易造成主機損壞 ，無法達到更加符合理想的散熱效果。 如前所述，現階段科技產業所採用之中央處理器、類 似之運算處理單元，或晶片組等電子元件的運作頻率日益 提高’導致電子元件於運作時所產生之熱量亦愈來愈高1 因此，如何更有效地提高前揭外極式風扇之散熱功能，藉 以提昇整體之散熱效果，乃是現今產業界積極研發之重^ 課題。 【新型内容】 因此，本新型之㈣’即在提供—種可增加風壓，同 時避免氣流回流以確保運轉更加順暢，而能提升散熱效率 之外極式離心型散熱風扇。 於是，本新型外極式離心型散熱風扇包含一框架單元 ，及一設於該框架單元上之扇輪單元。該框架單元包括一 基座、一覆設於該基座之圍繞壁上的集流罩，及複數間隔 設於该集流罩之連結板上的磁極柱，而該集流罩與基座之 圍繞壁共同圍設出一集流空間。該扇輪單元則包括一設於 M291031 :基f上：輪轂、複數設於該輪轂上之第一扇葉，及一環 心母—第1葉外緣且對應於該框架單元 的磁鐵環。 一本新型藉由該框架單元之集流罩與該基座共同圍設出 空間’使得該扇輪單元運轉時所吸入之氣流環繞於 5玄集流空間中，藉以形成氣流儲置的作用，如此，便可與 該扇輪單元同時弓丨人之氣流相匯集，而能達到增加風壓的 放果此外，於氣流導入該每一第一扇葉之間時，可藉由 形成於該框架單元之集流罩内的集流空間收納部份導入的 氣流，不致使氣流回流至每一第一扇葉之間，而能避免造 成氣流方向不平穩的情況，使該扇輪單元運轉時更為穩定 、順暢。 心 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 在本新型被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示。 參閱圖2、3，本新型外極式離心型散熱風扇5之第一 較佳實施例包含一框架單元6，及一設於該框架單元6上之 扇輪單元7。 該框架單元6包括一基座61、一設於該基座61上之集 流罩62，及複數間隔設於該集流罩62上之磁極柱63。該 基座61具有一承置板611 ’ 一由該承置板611周緣向上延 M291031In the evening, it is easy to cause the host to be damaged, and it is impossible to achieve a better heat dissipation effect. As mentioned above, the operating frequency of electronic components such as central processing units, similar computing processing units, or chipsets used in the technology industry at this stage is increasing. The resulting heat generated by electronic components is also increasing. Therefore, how to more effectively improve the heat dissipation function of the externally exposed external fan, in order to improve the overall heat dissipation effect, is an important topic of active research and development in the industry today. [New content] Therefore, the (4) of the present invention provides a type of centrifugal centrifugal fan that can increase the wind pressure while avoiding airflow backflow to ensure smoother operation and improve heat dissipation efficiency. Therefore, the external external centrifugal cooling fan of the present invention comprises a frame unit and a fan wheel unit disposed on the frame unit. The frame unit includes a base, a current collecting cover covering the surrounding wall of the base, and a plurality of magnetic poles spaced apart from the connecting plate of the collecting cover, and the collecting cover and the base A collecting space is enclosed around the wall. The fan wheel unit includes a magnet ring disposed on the M291031: base f: a hub, a plurality of first blades disposed on the hub, and a ring heart-first leaf outer edge and corresponding to the frame unit. A new type of space is formed by the collecting hood of the frame unit and the base, so that the airflow sucked by the fan wheel unit is surrounded by the airflow storage space, thereby forming an airflow storage function. In this way, the fan wheel unit can be combined with the airflow of the person, and the effect of increasing the wind pressure can be achieved. Further, when the airflow is introduced between the first first blades, the frame can be formed by the airflow. The collecting space in the collecting hood of the unit accommodates part of the introduced airflow, so that the airflow is not returned to each of the first blades, and the situation that the airflow direction is not stable can be avoided, so that the fan wheel unit is operated more For stability and smoothness. [Embodiment] The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figures 2 and 3, a first preferred embodiment of the present external pole centrifugal fan 5 includes a frame unit 6, and a fan wheel unit 7 disposed on the frame unit 6. The frame unit 6 includes a base 61, a current collecting cover 62 disposed on the base 61, and a plurality of magnetic poles 63 spaced apart from the current collecting cover 62. The base 61 has a receiving plate 611' and is extended upward from the periphery of the receiving plate 611. M291031
伸之圍繞壁612，及一形成於該圍繞壁612側緣之出風口 61〇。該集流罩62具有一由該圍繞壁612朝基座61中央方 向延伸之頂板621、一由該頂板621側緣向下延伸之連結板 622、一形成於頂板621上且由該連結板622内側壁所界定 出之入風口 600、一由該連結板622底緣朝圍繞壁612方向 延伸且與該圍繞壁612形成有一間距之擋板623，及一由該 頂板621、連結板622、擋板623與該基座61之圍繞壁βΐ2 所共同圍設出之集流空間620。而每一磁極柱63是間隔設 於該集流罩62之連結板622内側面上，該磁極柱63是由 一設於該連結板622上之定子架631，及繞設於該定子架 631上之線圈632所組成。 該扇輪單元7是設於該框架單元6之基座61上，包括 一可旋轉地設於該基座61之承置板gu上的轉軸71、一設 於該轉軸71上之輪轂72、複數設於該輪轂72上之第一扇 葉73 ’及-環設於每-第―扇葉73外緣且對應於該框架單 元6之每一磁極柱63的磁鐵環74。該輪轂72又具有一由 該集流罩62之入風u 600方向向下延伸之立置部切，及 接、男於5亥立置部721且朝該基座61之圍繞壁612方向彎 延的平置部722。再者，該扇輪單元7之每一第一扇葉π 疋由違輪毂72之立置部721延伸至平置部722上。^ 再如圖3所示’當對該框架單元6之每—磁極柱⑽通 電，使每-磁極柱63與該扇輪單元7之磁鐵環Μ產生電 磁效應而相互感應時’即可驅動整個扇輪單元了相對於兮 框架單元6旋轉。該扇輪單& 7於運轉時，每—第―扇^ M291031 73便會由上方之入風口 6〇〇導入氣流並導引氣流轉由側向 朝出風口 610排出，藉由所產生之氣流流動以驅散電子元 件（圖中未示出）所產生之高熱。另―方面，由於該集流 罩62之頂板621、連結板622、擋板623與該基座61之圍 繞壁612共同圍設出一集流空間62〇，因此，由該扇輪單元 7導入該框架單元6内之氣流，亦會同時由該集流罩62之 擋板623與基座61之圍繞壁612 fa1的間距流入該集流空間 620内，並裱繞於該集流空間62〇中且形成氣流儲置的作用 ，換言之，當該扇輪單元7進行旋轉而導入、排出氣流的 同日才，该框架單元6之集流罩62 Μ可收納部份導入的氣流 同日守大巾田減少氣流回至每一第一扇葉7 3之間，避免造成 氣流方向不平穩的情況。 接績則述’由該扇輪單元7上方之入風口 所導入 氣流與集流罩62内之二股氣流於相匯集時，便能達到增加 風壓的效果，係因此時該框架單元6内匯集二股氣流而使 相聚合而成的風壓大幅增加，故可使該扇輪單元7之每一 第一扇葉73所導出之出風風壓變大，進而能在不增加體積 與風扇轉速的情況下，達到更強的出風力，對電子元件產 生更大的散熱功效。此外，於氣流導入該每一第一扇葉73 之間時，可藉由該框架單元6之集流罩62内所形成的集流 空間620收納部份導入的氣流，而不致使氣流回流至每一 第一扇葉73之間，因而能避免造成氣流方向不平穩的情況 ’使该扇輪單元7運轉時更為穩定、順暢。 茶閱圖4，本新型外極式離心型散熱風扇5之第二較佳 M291031 實施例同樣包含一框架單元6，及一設於該框架單元6之扇 輪，元7。不同於第一較佳實施例之處在於：該扇輪單元: 之每一第一扇葉73是設於該輪轂72之立置部721上，且 该扇輪單元6更包括有複數設於該輪轂72之平置部722上 的第二扇葉75。本實施例藉由該輪轂72之立置部721與平 置部722上分別設有二相分離的第一扇葉73與第二扇葉75 ，同樣可藉由該第一扇葉73與第二扇葉75接續由入風口 6〇〇導入氣流並導引氣流轉由側向朝出風口 61〇排出，而達 到熱散效果。同樣地，亦可藉由該集流空間620之設計， 儲置由該扇輪單元7運轉時所產生之氣流，而達到增壓風 壓的效果。此外，亦能避免造成氣流方向不平穩的情況， 使该扇輪單元7運轉時更為穩定、順暢。 參閱圖5，本新型外極式離心型散熱風扇5之第三較佳 實施例同樣包含一框架單元6，及一設於該框架單元6之扇 輪單元7。不同於第二較佳實施例之處在於：該框架單元6 更包括有複數設於該集流罩62之連結板622的靜葉片64， 且每一靜葉片64是位於該扇輪單元7之每一第一扇葉73 與第二扇葉75之間。本實施例藉由該集流罩62之連結板 622上設有多數的靜葉片64，更可導正由該扇輪單元7之 每第一扇葉73所導入的氣流，使接續導入該第二扇葉 的氣流更為穩定，而能避免風壓產生較大的變化。當然， 本貫施例之外極式離心型散熱風扇5於實際運轉時，同樣 可藉由該集流空間620形成高壓氣流及收納部份導入的氣 /；，L以產生更強的出風力及避免氣流回流，確保該扇輪單 10 M291031 ^運轉順暢，對電子元件產生更大的散熱功效。 埶、τ、上所述，本新型外極式離心型散熱風扇5與習知散 =自較之下1能達到增加風壓的效果外，同時可避 免氣机回流以確保該扇輪單元7之運轉順暢，進而能 整體散熱效率，因此確實能達到本新型的目的。 &、惟以上所述者，僅為本新型之較佳實施例而已，當不 —、此限疋本新型實施之範圍，即大凡依本新型申請專利 _及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 .圖1是習知外極式散熱風扇之一使用狀態側視剖視圖 圖2是本新型外極式離心型散熱風扇之第一較佳實施 例的立體分解圖； 、 圖3是本新型外極式離心型散熱風扇之 例的側視剖視圖； ^ I ϋ 4是本新型外極式離心型散熱風扇的第二較佳實施 例的側視剖視圖；及 圖5是本新型外極式離心型散熱風扇的第三較佳實施 例的側視剖視圖。 11 M291031 【主要元件符號說明】 5 外極式離心型散熱風扇 623 6 框架單元 620 7 扇輪單元 71 61 基座 Ί2 62 集流罩 73 6 3 磁極柱 74 611 承置板 721 612圍繞壁 722 610 出風口 75 621 頂板 64 622 連結板 600 入風口 631 定子架 632 線圈 擋板 集流空間 轉軸 輪轂 第一扇葉 磁鐵環 立置部 平置部 第二扇葉 靜葉片 12Extending around the wall 612, and an air outlet 61〇 formed on the side edge of the surrounding wall 612. The current collecting cover 62 has a top plate 621 extending from the surrounding wall 612 toward the center of the base 61, a connecting plate 622 extending downward from the side edge of the top plate 621, and a connecting plate 622 formed on the top plate 621 and connected by the connecting plate 622. The air inlet 600 defined by the inner side wall, a baffle 623 extending from the bottom edge of the connecting plate 622 toward the surrounding wall 612 and forming a spacing from the surrounding wall 612, and a top plate 621, a connecting plate 622, and a blocking plate The collecting space 620 is surrounded by the plate 623 and the surrounding wall βΐ2 of the base 61. Each of the magnetic poles 63 is disposed on the inner side of the connecting plate 622 of the current collecting cover 62. The magnetic pole 63 is a stator frame 631 disposed on the connecting plate 622, and is disposed around the stator frame 631. The upper coil 632 is composed of. The fan unit 7 is disposed on the base 61 of the frame unit 6, and includes a rotating shaft 71 rotatably disposed on the receiving plate gu of the base 61, a hub 72 disposed on the rotating shaft 71, A plurality of first blades 73' and a ring provided on the hub 72 are provided on the outer edge of each of the first blades 73 and correspond to the magnet ring 74 of each of the pole posts 63 of the frame unit 6. The hub 72 further has an upright portion extending downward from the direction of the air inlet u 600 of the current collecting cover 62, and is connected to the men's wall 5 and facing the wall 612 of the base 61. Extended flat portion 722. Furthermore, each of the first blades π 该 of the fan wheel unit 7 extends from the upright portion 721 of the wheel hub 72 to the flat portion 722. ^ As shown in FIG. 3, 'When the magnetic pole (10) of each of the frame units 6 is energized so that each of the magnetic poles 63 and the magnet ring of the fan unit 7 have an electromagnetic effect and are mutually inductive, the whole can be driven. The fan wheel unit rotates relative to the frame unit 6. When the fan wheel & 7 is in operation, each - the first fan ^ M291031 73 will be introduced into the air flow from the upper air inlet 6 并 and guide the air flow to be discharged laterally toward the air outlet 610, by generating The air flow flows to dissipate the high heat generated by the electronic components (not shown). On the other hand, since the top plate 621, the connecting plate 622, and the baffle 623 of the current collecting cover 62 and the surrounding wall 612 of the base 61 together define a collecting space 62, the fan unit 7 is introduced. The airflow in the frame unit 6 also flows into the collecting space 620 by the distance between the baffle 623 of the collecting hood 62 and the surrounding wall 612 fa1 of the pedestal 61, and is wound around the collecting space 62. And forming the airflow storage function, in other words, when the fan unit 7 rotates to introduce and discharge the airflow, the collector cover 62 of the frame unit 6 can accommodate a part of the introduced airflow. Reduce the airflow back to each of the first blades 73 to avoid the situation that the airflow direction is not stable. According to the performance, when the airflow introduced from the air inlet above the fan unit 7 and the two airflows in the collecting hood 62 are collected, the effect of increasing the wind pressure can be achieved, and thus the frame unit 6 is assembled. The air pressure generated by the two-phase airflow is greatly increased, so that the wind pressure generated by each of the first blades 73 of the fan unit 7 can be increased, and the volume and the fan speed can be increased without increasing the volume. In this case, a stronger wind output is achieved, which has a greater heat dissipation effect on the electronic components. In addition, when the airflow is introduced between each of the first blades 73, a part of the introduced airflow can be received by the collecting space 620 formed in the collecting cover 62 of the frame unit 6 without causing the airflow to flow back to Between each of the first blades 73, it is possible to avoid the situation that the airflow direction is not stable, which makes the fan wheel unit 7 more stable and smooth. The second preferred M291031 embodiment of the present invention also includes a frame unit 6, and a fan, element 7, disposed in the frame unit 6. Different from the first preferred embodiment, the first fan blade 73 is disposed on the vertical portion 721 of the hub 72, and the fan wheel unit 6 further includes a plurality of The second blade 75 on the flat portion 722 of the hub 72. In this embodiment, the first blade 73 and the second blade 75 separated by two phases are respectively disposed on the vertical portion 721 and the flat portion 722 of the hub 72, and the first blade 73 and the same can be used. The two blades 75 are successively introduced into the airflow by the air inlet 6〇〇 and guide the airflow to be discharged laterally toward the air outlet 61〇 to achieve the heat dissipation effect. Similarly, the design of the collecting space 620 can also store the airflow generated by the operation of the fan wheel unit 7 to achieve the effect of supercharging the air pressure. In addition, it is also possible to avoid the situation that the airflow direction is not stable, and the fan wheel unit 7 is more stable and smooth when it is operated. Referring to Fig. 5, a third preferred embodiment of the outer-extreme centrifugal fan 5 of the present invention also includes a frame unit 6, and a fan unit 7 disposed in the frame unit 6. Different from the second preferred embodiment, the frame unit 6 further includes a plurality of stator blades 64 disposed on the connecting plate 622 of the collector cover 62, and each of the stationary blades 64 is located at the fan wheel unit 7. Between each of the first blades 73 and the second blades 75. In this embodiment, a plurality of stationary vanes 64 are disposed on the connecting plate 622 of the collecting hood 62, and the airflow introduced by each of the first blades 73 of the fan unit 7 can be guided to introduce the connecting body. The airflow of the two blades is more stable, and it can avoid large changes in wind pressure. Of course, in the actual operation, the pole-type centrifugal fan 5 can also form a high-pressure airflow and a part of the introduced gas by the collecting space 620 to generate a stronger wind. And to avoid airflow backflow, to ensure that the fan wheel 10 M291031 ^ runs smoothly, and has a greater heat dissipation effect on electronic components.埶, τ, above, the new external centrifugal centrifugal fan 5 and the conventional knowledge = can achieve the effect of increasing the wind pressure from the lower one, and at the same time avoid the backflow of the air to ensure the fan unit 7 The operation is smooth, and the overall heat dissipation efficiency is achieved, so that the object of the present invention can be achieved. And the above is only the preferred embodiment of the present invention, and is not limited to the scope of the present invention, that is, the simplicity of the new patent application and the new description. Both effect changes and modifications are still covered by this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational cross-sectional view showing a state of use of a conventional external-pole type cooling fan. FIG. 2 is an exploded perspective view showing a first preferred embodiment of the present external-pole centrifugal type cooling fan; 3 is a side cross-sectional view showing an example of the outer-extreme centrifugal fan of the present invention; ^ I ϋ 4 is a side cross-sectional view of a second preferred embodiment of the outer-extreme centrifugal fan of the present invention; and FIG. 5 is a novel A side cross-sectional view of a third preferred embodiment of an outer pole centrifugal fan. 11 M291031 [Explanation of main component symbols] 5 External-pole centrifugal cooling fan 623 6 Frame unit 620 7 Fan wheel unit 71 61 Base Ί 2 62 Collector cover 73 6 3 Magnetic pole column 74 611 Bearing plate 721 612 around wall 722 610 Air outlet 75 621 Top plate 64 622 Connecting plate 600 Air inlet 631 Stator frame 632 Coil baffle Current collecting space Shaft hub First blade magnet ring Standing portion Flat portion Second blade Static vane 12