200810666 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種散熱裝置，特別係一種適用於發熱電 子元件之散熱裝置。 【先前技術】 當前，隨著電腦産業之迅速發展，微處理晶片等發熱 電子元件産生之熱量愈來愈多，爲將該等多餘之熱量有效 散發’習知之方法係在發熱電子元件之表面貼設一散熱 器，在散熱風扇之輔助下將發熱電子元件産生之熱量强制 散去。請參照圖6，其所示爲一種習知之散熱裝置4〇，該 散熱裝置40包括一散熱風扇42及一散熱器44，該散熱器 44具有複數平行排列之散熱片442，並與一發熱電子元件 (圖未示)熱連接，以吸收該發熱電子元件産生之熱量，該散 熱風扇42包括一殼體422、一定子(圖未示)及一轉子423，BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat dissipating device, and more particularly to a heat dissipating device suitable for a heat generating electronic component. [Prior Art] At present, with the rapid development of the computer industry, heat generated by heat-generating electronic components such as micro-processed wafers is increasing, so that the excess heat is effectively dissipated. [The conventional method is attached to the surface of the heat-generating electronic component. A heat sink is provided to force the heat generated by the heat-generating electronic components to be dissipated by the heat-dissipating fan. Referring to FIG. 6 , there is shown a conventional heat dissipating device 4 . The heat dissipating device 40 includes a heat dissipating fan 42 and a heat sink 44 . The heat sink 44 has a plurality of fins 442 arranged in parallel and is associated with a heat generating electron. The component (not shown) is thermally connected to absorb heat generated by the heat-generating electronic component. The heat-dissipating fan 42 includes a housing 422, a stator (not shown), and a rotor 423.
該散熱風扇42之殼體422形成有一出風口 421，該散埶哭 44位於該出風口 421處。當該散熱風扇42逆時針運轉時°， 轉子423産生-冷却氣流46對該散熱器私進行强制散熱。 如圖6所示，由於該散熱器44之散熱片4 ^距相等’而出風口 421内各處冷却氣流姑之强度不 ^位於氣流下游之散熱片442與冷却氣流妨之流向之 間存在-疋夾角，從畴致該散絲44之 降低該散熱裝置4〇之散熱效率。 L 乂门、、 200810666 【發明内容】 有鑒於此’有必要提供—種散熱效輪高之散熱裝置。 -種散熱裝置，用於散發t子元件纽讀量，包括 -散熱風扇及-散熱n，該散熱風翻於產生冷却氣流對 該散熱器進行關餘，其巾，概鋪爲—折叠式散熱 器’該散熱器包括複數散熱片，該等散熱片之_間距大 小對應該冷却氣流之强度大小成反比設置。The housing 422 of the cooling fan 42 is formed with an air outlet 421, and the diverging crying 44 is located at the air outlet 421. When the cooling fan 42 is operated counterclockwise, the rotor 423 generates a cooling airflow 46 for forced heat dissipation of the radiator. As shown in FIG. 6, since the heat sinks of the heat sink 44 are equidistant from each other, and the cooling airflow in the air outlets 421 is not strong, the heat sink 442 located downstream of the airflow and the flow direction of the cooling airflow exist. The angle of the 疋, the dissipation of the louver 44 from the domain reduces the heat dissipation efficiency of the heat sink 4 . L 乂门,, 200810666 [Summary of the Invention] In view of this, it is necessary to provide a heat dissipating device with a high heat dissipation effect. - a heat dissipating device for dissipating the amount of reading of the t sub-component, including - a cooling fan and a heat dissipating n, the cooling wind turning over the cooling airflow to cut off the heat sink, and the towel is laid-folded The heat sink includes a plurality of heat sinks, and the size of the fins is inversely proportional to the intensity of the cooling airflow.
Λ 一種散熱裝置’包括—離心式散熱風扇及-散熱器， 該散熱風扇具有-出風口’該散鋪設置於該出風口處， 該散熱風扇產生之冷械流經由糾風口吹向該散熱器， 其中，該散熱器由金屬片連續f折形成，其包括一敏密段 及一疏· ’顧紐辦料魏仏上游，該疏鬆段 卩氣流之下游，該疏鬆段中散熱片之間的間距大 於該緻忿段中散熱片之間的間距。 與^技術相比，藉由對散熱片之間關距相對氣流 执調整设置’降低散熱器之流阻，提高散熱片之散 =率，贱使該散齡置财餘神較高之優點。 【實施方式】 圖爲本發齡置實之 】中：熱裝請包括一散熱器10及一散熱風 b散熱a 10與-發熱電子元件(圖未示) =器1()係—折叠式散熱器，由單_金屬_ “ 折形成，其具有複數散熱片12，該等散熱片j ㈣一疋距離相互平行排列，該散熱風扇20用於對該散軌 200810666 器ίο進行强制散熱。 該散熱風扇20爲一離心式散熱風扇，包括一殼體22、 一定子(圖未示)及一轉子24，該定子及該轉子24安裝在該 殼體22内，該轉子24包括複數扇葉24a。 該殼體22包括一上蓋222、一底蓋224及一側壁226。 該上蓋222上設有一進風孔222a，該底蓋224上設有複數 進風孔224a。該側壁226爲一 “U”型結構，並與該底蓋224 及上蓋222組成一具有長方形出風口 221之半封閉結構。 ® 其中，該出風口 221處侧壁226之高度高於其他地方側壁 226之高度，以便收容該散熱器1〇。 請參照圖2，該定子及該轉子24偏心地安裝在該殼體 22内，該等扇葉24a之最外端與該側壁226間隔一定距離 形成一流道223，爲提高轉子24産生之冷却氣流30之流 速，在沿逆時針方向即該冷却氣流30之流動方向上，該流 道223逐漸變寬。在該流道223最寬處，該轉子24之扇葉 • 24a與該側壁226形成一流道出口 223a，在與該流道出口 223a相對之另一侧，該側壁226於靠近出風口 221之位置 向轉子24突伸設有一呈三角形之舌口 223b。 請參照圖1及圖2，該散熱器1〇對應於該轉子％設 置於該殼體22之出風口 221内，該散熱器1〇爲兩段式結 構，其具有—緻密段12a及一疏鬆段12b。該緻密段仏 對應該流道出口 223a設置，該疏鬆段！2b對應該舌口廳 设置。該散熱器10遠離該散熱風扇20之一端與該殼體22 之出風口 221之最外端對齊，該緻密段12a之散熱片以比 200810666 疏鬆段12b之散熱片12更長並伸入至該流道出口 223a内， 該疏鬆段12b中散熱片12之間的間距大於該緻密段12a中 散熱片12之間的間距。 請參照圖3，該散熱器10設置於該殼體22之出風口 221内，且該殼體22之上蓋222及底蓋224緊貼於該散熱 器10之上下端面，與該等散熱片乜配合形成流道以供冷 却氣流30通過。 由以上叙述可知，由於該流道223沿逆時針方向逐漸 變寬’使得轉子24轉動時，流道出口 223a處即上游之冷 却氣流30具有最大之流速，相應地，該散熱器1〇之緻密 段12a之散熱片12具有最大之長度及最小之間距，且上游 之冷却氣流30之流向與對應之緻密段12a中之散熱片12 基本平行，有效地提高該緻密段12a之散熱效率。另外， 從該緻密段12a至該疏鬆段12b，該等散熱片12之長度减 小且間距增大，使靠近該舌口 223b即位於下游低流速區域 、P氣机30更易於流過，彌補下游之冷却氣流如由於 與=熱片12存在夾角而引起流速下降之缺陷，有效地降低 氏机速區域政熱器1〇之流阻’即藉由將散熱片以之間的 ^距大小對應該冷却氣流Μ之强度大小纽比設置，使强 :較大之上魏流對應之緻密段12a之間距較小，而强度 下游乳流所對應之疏鬆段i2b之間距較大，降低該 ’、、、=10 i體之流阻，提高該散熱裝置之散熱效率。 睛參_ 4，其所示爲本發明散歸置第二實施例之 立體分解圖，复金^ /、/、弟一實施例之不同之處在於··該側壁227 200810666 ， 爲一弧形結構，其與該上蓋225及底蓋229組成一具有弧 形出風口 221b之半封閉結構。該散熱器i〇a係一折叠式散 熱器，其具有複數散熱片11，該散熱器l〇a對應該出風口 221b呈弧形排列。同樣的，該散熱器1〇a包括一位於冷却 氣流30上游之緻密段lla及位於冷却氣流3〇下游並與該 緻密段11a相連接之一疏鬆段llb。該緻密段lla中的散熱 片11之間的間距比疏鬆段llb之間距小，而長度比疏鬆段 llb長’該緻密段Ua的散熱片11伸入該流道出口 223丑内。 請參照圖5，該散熱器i〇a靠近該轉子24之一端形成 一呈圓弧狀内邊13，該内邊13與該轉子24之扇葉24a末 鳊保持大致相同的距離，該散熱器1〇a遠離該轉子24之一 端形成兩相互垂直之外邊15、17，該兩外邊15、17之間 藉由一缺口 19過渡。該散熱器1〇a對應該流道出口 22知 處即氣流强度最大處之散熱片u的間距較小，以提高該處 散熱片11之散熱效率。位於冷却氣流3〇上游之緻密段lla • 中的散熱片11相互平行設置，以對應冷却氣流30之流向， 而位於冷却氣流30下游之疏鬆段llb中的散熱片u則以 傾斜角度設置，以迎合該下游處冷却氣流3G之流向，使得 該散熱S 10a之每-散熱片u之方向對應冷却氣流3〇之 流向設置，崎盡可能地减小散熱片U與冷却氣流3〇之 流向之間的夾角，從而减小該散熱器施之流阻，提高該 政齡10a之散熱效率。藉由該兩外邊口及該缺口 w 之設置，使得該散熱H 1Ga對顧流道出口池及舌口 223b處之散熱片U較長，其餘部分較短，即該散熱器 200810666 對應該冷却氣流30風速較高部分之散熱片11較長，而風 速較低部分之散熱片11較短，從而有效地降低該散熱器 l〇a之流阻，提高該散熱器l〇a之散熱效率。 另外，由於上述兩實施例中之散熱器10及散熱器1〇a 係折叠式散熱器，而折叠式散熱器相對於堆叠扣合式散熱 器或其他種類之散熱器而言，可以更容易地調節散熱片之 長短、散熱片之間的間距以及散熱片之間所成的角度，從Λ A heat dissipating device includes: a centrifugal cooling fan and a heat sink, the cooling fan has an air outlet, and the air is disposed at the air outlet, and the cold mechanical flow generated by the cooling fan is blown to the radiator through the air correction port Wherein, the heat sink is formed by continuous f-folding of the metal piece, and comprises a sensitive segment and a sparse of the upstream of the weird section, the downstream of the airflow of the loose section, between the heat sinks in the loose section The spacing is greater than the spacing between the fins in the segment. Compared with the ^ technology, by adjusting the relative distance between the fins and the relative airflow adjustment, the flow resistance of the heat sink is reduced, and the dispersion rate of the heat sink is increased, so that the age is higher. [Embodiment] The figure is based on the actual age of the body]: the hot package includes a heat sink 10 and a heat dissipation air b heat dissipation a 10 and - heating electronic components (not shown) = device 1 () system - folding The heat sink is formed by a single-metal _" folding, which has a plurality of fins 12, and the fins j (four) are arranged in parallel with each other. The heat dissipating fan 20 is used for forcibly dissipating heat of the loose beam 200810666. The fan 20 is a centrifugal cooling fan comprising a housing 22, a stator (not shown) and a rotor 24, the stator and the rotor 24 being mounted in the housing 22, the rotor 24 including a plurality of blades 24a. The housing 22 includes an upper cover 222, a bottom cover 224 and a side wall 226. The upper cover 222 is provided with an air inlet hole 222a, and the bottom cover 224 is provided with a plurality of air inlet holes 224a. The side wall 226 is a "U". The bottom cover 224 and the upper cover 222 form a semi-closed structure having a rectangular air outlet 221. The height of the side wall 226 of the air outlet 221 is higher than the height of the side wall 226 of other places to accommodate the heat dissipation. Referring to FIG. 2, the stator and the rotor 24 are eccentrically Installed in the housing 22, the outermost ends of the blades 24a are spaced apart from the side walls 226 by a distance to form a flow path 235. To increase the flow rate of the cooling airflow 30 generated by the rotor 24, the cooling airflow is in a counterclockwise direction. The flow path 223 is gradually widened in the flow direction of 30. At the widest point of the flow path 223, the blade 24a of the rotor 24 and the side wall 226 form a first-class exit 223a opposite to the flow path outlet 223a. On the other side, the side wall 226 protrudes from the air outlet 221 to protrude from the rotor 24 with a triangular tongue 223b. Referring to FIG. 1 and FIG. 2, the heat sink 1 is corresponding to the rotor and is disposed on the shell. In the air outlet 221 of the body 22, the heat sink 1 is a two-stage structure having a dense section 12a and a loose section 12b. The dense section 设置 is disposed corresponding to the flow passage outlet 223a, and the loose section! 2b corresponds The tongue and groove chamber is disposed. One end of the heat sink 10 is away from the outermost end of the air outlet 221 of the casing 22, and the heat sink of the dense portion 12a is longer than the heat sink 12 of the loose portion 12b of 200810666 And extending into the runner outlet 223a, the sparse The spacing between the fins 12 in the segment 12b is greater than the spacing between the fins 12 in the dense segment 12a. Referring to FIG. 3, the heat sink 10 is disposed in the air outlet 221 of the housing 22, and the housing 22 The upper cover 222 and the bottom cover 224 are in close contact with the upper end surface of the heat sink 10, and cooperate with the heat sinks to form a flow path for the passage of the cooling airflow 30. As can be seen from the above description, the flow path 223 gradually becomes counterclockwise. When the rotor 24 is rotated, the upstream cooling airflow 30 at the flow path outlet 223a has the maximum flow rate, and accordingly, the heat sink 12 of the dense section 12a of the heat sink 1 has the largest length and the minimum distance. The flow direction of the upstream cooling airflow 30 is substantially parallel to the heat sink 12 in the corresponding dense section 12a, effectively improving the heat dissipation efficiency of the dense section 12a. In addition, from the dense section 12a to the loose section 12b, the length of the fins 12 is reduced and the pitch is increased, so that the lower mouth velocity 223b is located in the downstream low flow velocity region, and the P gas turbine 30 is more likely to flow, making up The downstream cooling airflow has the defect of decreasing the flow velocity due to the angle with the hot plate 12, effectively reducing the flow resistance of the heat exchanger in the crankshaft region, that is, by the distance between the heat sinks The intensity of the cooling airflow should be set so that the distance between the dense segments 12a corresponding to the upper Wei flow is smaller, and the distance between the loose segments i2b corresponding to the downstream downstream flow is larger, reducing the ', , , = 10 flow resistance of the body, improve the heat dissipation efficiency of the heat sink. The eye _ 4, which is an exploded perspective view of the second embodiment of the present invention, is different in the embodiment of the composite gold ^ /, /, and the second embodiment is that the side wall 227 200810666 is an arc The structure, which is combined with the upper cover 225 and the bottom cover 229, has a semi-closed structure having a curved air outlet 221b. The heat sink i〇a is a folding heat sink having a plurality of fins 11 which are arranged in an arc corresponding to the air outlet 221b. Similarly, the heat sink 1A includes a dense section 11a upstream of the cooling airflow 30 and a loose section 11b downstream of the cooling airflow 3〇 and connected to the dense section 11a. The distance between the fins 11 in the dense section 11a is smaller than the distance between the loose sections 11b, and the length is longer than the loose section llb'. The fins 11 of the dense section Ua extend into the vent exit 223. Referring to FIG. 5, the heat sink i〇a forms an arc-shaped inner edge 13 near one end of the rotor 24. The inner edge 13 maintains substantially the same distance as the fan blade 24a of the rotor 24, the heat sink. 1〇a is spaced apart from one end of the rotor 24 to form two mutually perpendicular outer edges 15, 17 which are transitioned by a notch 19 between the two outer edges 15, 17. The heat sink 1A corresponds to the flow path outlet 22, that is, the distance between the heat sinks u at which the air flow intensity is the greatest is small, so as to improve the heat dissipation efficiency of the heat sink 11 there. The fins 11 in the dense section 11a of the upstream of the cooling airflow 3 are disposed in parallel with each other to correspond to the flow direction of the cooling airflow 30, and the fins u located in the loose section 11b downstream of the cooling airflow 30 are disposed at an oblique angle to The flow direction of the cooling airflow 3G at the downstream is catered for, so that the direction of the heat sink S 10a is set corresponding to the flow direction of the cooling airflow 3,, and the flow direction between the heat sink U and the cooling airflow is reduced as much as possible. The angle of the heat sink is reduced, thereby improving the heat dissipation efficiency of the aging age 10a. By means of the two outer edges and the gap w, the heat dissipation H 1Ga is longer for the heat sink U at the flow channel outlet and the tongue 223b, and the rest is shorter, that is, the heat sink 200810666 corresponds to the cooling airflow. The heat sink 11 of the higher portion of the wind speed is longer, and the heat sink 11 of the lower portion of the wind speed is shorter, thereby effectively reducing the flow resistance of the heat sink 10a and improving the heat dissipation efficiency of the heat sink 10a. In addition, since the heat sink 10 and the heat sink 1〇a in the above two embodiments are folding heat sinks, the folding heat sink can be more easily adjusted with respect to the stacked snap-in heat sink or other kinds of heat sinks. The length of the heat sink, the spacing between the heat sinks, and the angle between the heat sinks,
而使該散熱器10及散熱器l〇a具有易於製造之優點。同 時，該折叠式散熱器10及l〇a可以在加工製造過程中靈活 控制並改變散熱片之間的間距，並可根據電腦内部之空間 構造及流場分布情况設計散熱片之形狀及長度，比如上述 第二實施例中缺口 19之設置可提供額外之空間供安裝等 相關用途使用。 - 由以上敘述可知，藉由該散熱器10及散熱器1〇a中散 熱片12及散熱片11的長短、間距及夾角之設置，有效地 降低該散熱器10之流阻，提高該散熱器1G之散熱面積， 從而有效提錢散齡置_之散熱鱗，使得該散=裝 置100具有散熱效率較高之優點。 效修飾 綜上所述，本發明符合發明專利要件，爰依法提出專 利申請。惟’以上所述輕林發明之較佳實施例 熟悉本案技藝之人士，在爰依本發明精神所作之等 或變化，皆應涵蓋於以下之申請專利範_。 【圖式簡單說明】 圖1爲本㈣散歸置第-實施狀立齡解圖。 11 200810666 圖2爲圖1所示散 _ m ^ ^ “、、裝置去掉上蓋後之俯視圖。 圖3爲圖1所示散_置之立體組合圖。 圖爲本發月放熱裝置第二實施例之立體分解圖 圖爲圖4所示放熱裝置去掉上蓋後之俯視圖。 圖6爲-習知散_置去掉上蓋後之俯視圖。 【主要元件符號說明】 <本發明> 散熱裝置 100 散熱器 10、 10a 散熱片 疏鬆段 外邊 12、11 12b、 lib 15、17 緻密段 内邊 缺口 12a、 11a 13 19 散熱風扇 20 機殼 22 出風口 221 上蓋 222x 225 進風孔 222a 流道 223 — 流道出口 223a 舌口 223b 底蓋 224、 229 進風孔 224a 侧壁 226、 227 轉子 24 爲葉 24a 冷卻氣流 30 〈習知> 散熱裝置 40 散熱風扇 42 出風口 421 殼體 422 轉子 423 散熱器 44 散熱片 442 冷卻氣流 46 12The heat sink 10 and the heat sink 10a have the advantage of being easy to manufacture. At the same time, the folding heatsink 10 and l〇a can flexibly control and change the spacing between the heat sinks during the manufacturing process, and can design the shape and length of the heat sink according to the spatial structure and the flow field distribution inside the computer. For example, the arrangement of the notches 19 in the second embodiment described above provides additional space for use in installation and other related purposes. - As can be seen from the above description, by the arrangement of the length, the pitch and the angle of the heat sink 12 and the heat sink 11 in the heat sink 10 and the heat sink 1A, the flow resistance of the heat sink 10 is effectively reduced, and the heat sink is improved. The heat dissipation area of 1G, so as to effectively increase the size of the heat dissipation scale, so that the device 100 has the advantage of high heat dissipation efficiency. Modifications In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; [Simple description of the figure] Fig. 1 is the (4) scattered-positioned-implementation-aged solution. 11 200810666 Fig. 2 is a plan view of the _ m ^ ^ ", the device is removed from the upper cover. Fig. 3 is a perspective assembled view of the scatter device shown in Fig. 1. Fig. 2 is a second embodiment of the monthly heat release device The perspective view of the heat dissipating device shown in Fig. 4 is a top view of the heat dissipating device after removing the upper cover. Fig. 6 is a plan view of the main cover after removing the upper cover. [Main component symbol description] <The present invention> 10, 10a Heat sink loose section 12, 11 12b, lib 15, 17 Inner section of the dense section 12a, 11a 13 19 Cooling fan 20 Chassis 22 Air outlet 221 Upper cover 222x 225 Air inlet 222a Flow path 223 - Runner exit 223a tongue 223b bottom cover 224, 229 air inlet hole 224a side wall 226, 227 rotor 24 is leaf 24a cooling air flow 30 <study> heat sink 40 cooling fan 42 air outlet 421 housing 422 rotor 423 heat sink 44 heat sink 442 cooling airflow 46 12