200823642 九、發明說明： - 【發明所屬之技術領域】 . 本發明係涉及一種離心風扇，特別係涉及 ▲ 發熱電子元件散熱之離心風扇，本發明還涉及一 有該離心風扇之散熱模組及使用該散熱模組之電子^ 置。 、 【先前技術】 , 在筆記本電腦中，通常採用散熱模組對發熱電子 元件進行散熱，習知散熱模組一般包括一設有一出風 口之離心風扇、設於該離心風扇之出風口處之一散熱 鰭片組及連接該散熱鰭片組與發熱電子元件之一熱 管。該散熱模組通過熱管將發熱電子元件產生之熱量 傳遞到散熱鰭片組上並利用離心風扇運轉產生之氣流 將散熱鰭片組處之熱量散發到周圍空氣中，在一定程 度上滿足了發熱電子元件之散熱需求，惟，對於發熱 κ 量較大之發熱電子元件，其散熱性能略有不足，使該 發熱電子元件之散熱效果有待提升。 為提升該發熱電子元件之散熱效果，業界在該筆 記本電腦内加設一直接吹向發熱電子元件之離心風 扇，使該發熱電子元件產生之熱量在經由散熱模組散 熱之同時，也藉助於該直接吹向發熱電子元件之離心 風扇進行散熱，提升了對該發熱電子元件之散熱效 果，惟，該加設之離心風扇將額外地佔據筆記本電腦 7 200823642 之内部空間， 筆記本電腦輕 升發熱電子元 【發明内容】 從而增大筆記本電腦之體積及重量，與 、溥化之發展趨勢相違背，使得該種提 件之政熱效果之方法不甚理想。 有#於此’有必要提供一種在不增加筆記本電腦 =前提下即可提升對發熱電子元件散熱效果之離 ’同時也提供一種使用該離心風扇之散熱模組 及使用該散熱模組之電子裝置。 -種離心風扇’包括一上蓋、一下蓋及設於該上 裊::：盍之間之一侧壁，該上蓋及下蓋分別設有相對 =進風口及第—進風口，該侧壁設有一第一出風 口該離％風扇之側壁上還設有與第一出風口相對之 第二出風口。 種散熱模組，包括一離心風扇及一散熱鰭片 銀丄該離心風扇包括-上蓋一下蓋及設於該上蓋與 下蓋之間之一側壁，該上蓋及下蓋分別設有相對之第 風口及第二進風口，該側壁設有一第一出風口， 該放熱鰭片組設於該第一出風口處，該離心風扇之側 >上還Π又有與第一出風口相對之第二出風口。 種電子裝置，包括一發熱電子元件及用於對該 發熱電子7〇件散熱之一散熱模組，該散熱模組包括一 離心風扇、一散熱鰭片組及在該發熱電子元件和散熱 鑛片組間傳遞熱量之一熱管，該散熱鰭片組設於該離 心風扇之一側，且該離心風扇對應該散熱鰭片組開設 8 200823642 一第一出風口，該發熱電子元件設於該離心風扇之與 散熱鰭片組相對之另一側，且該離心風扇對應該發熱 電子元件開設有第二出風口。 ’ 與習知技術相比，上述離心風扇上增設一與第一 出風口相對之第二出風口，使發熱電子元件產生之熱 量藉助於設於第一出風口處之散熱鰭片組散熱之同 時，也可藉助於由第二出風口直接吹向發熱電子元件 之氣流散熱，在不增加散熱模組之成本及筆記本電腦 : 之體積之前提下提高散熱模組對發熱電子元件之散熱 效率。 【實施方式】 請參照圖1至圖3，本發明電子裝置1包括設於 筆記本電腦内之一發熱電子元件10及設於該筆記本 電腦内用於對該發熱電子元件10散熱之一散熱模組 20，該散熱模組20包括一散熱鰭片組21、用於對該 散熱鰭片組21散熱之一離心風扇23及連接該散熱鰭 v 片組21與發熱電子元件10之一熱管25。 該離心風扇23包括一平板狀之上蓋231、一平板 狀之下蓋232及設於該上蓋231與下蓋232之間之一 渦形側壁233。該下蓋232與該側壁233由鋁、塑膠 等材料一體成型，該上蓋231、下蓋232及該側壁233 之間合圍形成一收容該離心風扇23之轉子230之容置 空間234。該上蓋231及下蓋232在對應轉子230之 位置分別開設有相對之第一進風口 235及第二進風口 9 200823642 236。該下蓋232在第二進風口 236之位置設置一支撐 部237,該支撐部237支撐轉子230在該容置空間234 内沿逆時針方向轉動，產生用於對該發熱電子元件1〇 散熱之氣流。 該侧壁233之一側開設一直線形之第一出風口 238，該散熱鰭片組21設於該第一出風口 238處，並 與熱管25之冷凝段251相連接。該侧壁233在與該第 一出風口 238相對之另一侧向遠離該離心風扇23之方 向水平延伸一平行於下蓋232之板體26,並在靠近該 板體26與側壁233連接之部位開設一較小之第二出風 口 239。該板體26貼設於該發熱電子元件1〇上，並 與熱管25之蒸發段253相連接，該發熱電子元件10 產生之熱量經由該熱管25傳遞至散熱鰭片組21處。 該第一出風口 238大於該第二出風口 239，使離心風 扇23產生之大部分氣流由第一出風口 238經散熱鰭片 組21流出之同時，也有少部分氣流由該第二出風口 239流出，直接吹向該發熱電子元件1〇。本實施例中， 離心風扇23沿逆時針方向運轉，為使由第二出風口 239吹出之氣流直接吹向該發熱電子元件1〇，該第二 出風口 239設於該發熱電子元件1〇之左側，即該第二 出風口 239在離心風扇23之旋轉方向上位於該發熱電 子元件10之前方。同樣地，在離心風扇23沿順時針 方向運轉之情況下，該第二出風口 239需設置於發熱 電子元件10之右側，以保證由第二出風口 239吹出之 200823642 氣流直接吹向發熱電子元件ίο。 該散熱鰭片組21具有與熱管25之冷凝段251相 接觸之一上表面211及與離心風扇23之下蓋232相接 觸之一下表面212,該散熱鰭片組21之下表面212上 開設有沿散熱鰭片組21之長度方向延伸之一凹槽 213，該離心風扇23之下蓋232於第一出風口 238之 位置對應該凹槽213凸伸出兩個長條形之凸塊241。 當該散熱鰭片組21安裝至該離心風扇23之第一出風 口 238處時，該凸塊241卡設於該散熱鰭片組21之下 表面212所設之凹槽213内，防止散熱鰭片組21沿垂 直於凸塊241之方向滑出該離心風扇23。 如圖4所示，該散熱模組20工作時，熱管25將 發熱電子元件10產生之一部分熱量傳遞至散熱鰭片 組21處，藉助於經由該離心風扇23之第一出風口 238 吹出之氣流將該部分熱量吹出筆記本電腦之機殼外並 散發至周圍環境中，形成第一散熱路徑；同時，該發 熱電子元件10產生之另外一部分熱量則藉助於由離 心風扇23之第二出風口 239吹出之氣流直接吹拂進行 冷卻，形成第二散熱路徑。 該散熱模組20藉助兩條散熱路徑對發熱電子元 件10進行散熱，與習知之僅具有一出風口之散熱模組 相比，其散熱效能得到進一步之提高；且該散熱模組 20在不增加筆記本電腦之體積及重量之前提下，僅藉 助於在離心風扇23之側壁233開設第二出風口 239 11 200823642 之方式即可實現對散熱效能之提高，與習知之藉助於 加》又離％風扇以提高散熱效能之散熱模組相比，其具 有在提升散熱性能之同時，無需增加成本，通用性強 等優點。 ％ =上所述，本發明符合發明專利要件，爰依法提出專 矛J申明准，以上所述者僅為本發明之較佳實施例，舉凡 熟悉本案輯之人士，在爰依本發贿神所作之等效修飾 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係本發明電子裝置之立體分解圖。 圖。圖2係本發明電子裳置沿另—角度之立體分解200823642 IX. Description of the invention: - [Technical field of the invention] The present invention relates to a centrifugal fan, in particular to a centrifugal fan for heat dissipation of a heating electronic component, and to a heat dissipation module having the centrifugal fan and use thereof The electronic module of the heat dissipation module. [Previous technology] In a notebook computer, a heat dissipation module is generally used to dissipate heat from a heating electronic component. A conventional heat dissipation module generally includes a centrifugal fan having an air outlet, and one of the air outlets of the centrifugal fan. a heat dissipating fin set and a heat pipe connecting the heat dissipating fin set and the heat generating electronic component. The heat dissipation module transfers the heat generated by the heat-generating electronic components to the heat-dissipating fin set through the heat pipe, and uses the airflow generated by the centrifugal fan to dissipate the heat at the heat-dissipating fin group to the surrounding air, to a certain extent satisfying the heat-generating electrons. The heat dissipation requirement of the component is only slightly insufficient for the heat-generating electronic component with a large amount of heat generation, so that the heat dissipation effect of the heat-generating electronic component needs to be improved. In order to improve the heat dissipation effect of the heat-generating electronic component, a centrifugal fan directly blowing the heat-generating electronic component is added to the notebook computer, so that the heat generated by the heat-generating electronic component is dissipated through the heat dissipation module, The centrifugal fan directly blows the heat-generating electronic component to dissipate heat, which improves the heat dissipation effect on the heat-generating electronic component. However, the added centrifugal fan will additionally occupy the internal space of the notebook computer 7 200823642, and the notebook computer lightly rises the heating electronic component. SUMMARY OF THE INVENTION Therefore, increasing the size and weight of a notebook computer is contrary to the development trend of the smashing, which makes the method of the political heat effect of the kind of the pickup piece less satisfactory. There is a need to provide a kind of cooling device that can improve the heat dissipation effect of the heat-generating electronic components without adding a notebook computer. Also, a heat-dissipating module using the centrifugal fan and an electronic device using the same are provided. . - a centrifugal fan' includes an upper cover, a lower cover and a side wall disposed between the upper cover and the lower cover, wherein the upper cover and the lower cover are respectively provided with a relative air inlet and a first air inlet, and the side wall is provided There is a first air outlet which is further provided with a second air outlet opposite to the first air outlet on the side wall of the % fan. The heat dissipation module includes a centrifugal fan and a heat dissipating fin silver crucible. The centrifugal fan includes a top cover and a side wall disposed between the upper cover and the lower cover, and the upper cover and the lower cover respectively have opposite air outlets And a second air inlet, the side wall is provided with a first air outlet, the heat releasing fin group is disposed at the first air outlet, and the side of the centrifugal fan further has a second opposite to the first air outlet Air outlet. The electronic device includes a heat-generating electronic component and a heat dissipation module for dissipating heat from the heat-generating electronic component. The heat dissipation module includes a centrifugal fan, a heat-dissipating fin set, and the heat-dissipating electronic component and the heat-dissipating coal piece A heat pipe for transferring heat between the groups, the heat dissipation fin set is disposed on one side of the centrifugal fan, and the centrifugal fan is provided with a first air outlet corresponding to the heat dissipation fin group, and the heat generating electronic component is disposed on the centrifugal fan The other side opposite to the heat dissipation fin set, and the centrifugal fan is provided with a second air outlet corresponding to the heat generating electronic component. Compared with the prior art, the centrifugal fan is provided with a second air outlet opposite to the first air outlet, so that the heat generated by the heat-generating electronic component is dissipated by the heat-dissipating fin set at the first air outlet. By means of the airflow directly blown to the heat-generating electronic component by the second air outlet, the heat dissipation efficiency of the heat-dissipating module to the heat-generating electronic component can be improved without increasing the cost of the heat-dissipating module and the volume of the notebook computer. [Embodiment] Referring to FIG. 1 to FIG. 3, an electronic device 1 of the present invention includes a heat-generating electronic component 10 disposed in a notebook computer, and a heat dissipation module disposed in the notebook computer for dissipating heat from the heat-generating electronic component 10. The heat dissipation module 20 includes a heat dissipation fin group 21, a centrifugal fan 23 for dissipating heat from the heat dissipation fin group 21, and a heat pipe 25 connecting the heat dissipation fin v group 21 and the heat generating electronic component 10. The centrifugal fan 23 includes a flat upper cover 231, a flat bottom cover 232, and a scroll side wall 233 provided between the upper cover 231 and the lower cover 232. The lower cover 232 and the side wall 233 are integrally formed of a material such as aluminum or plastic. The upper cover 231, the lower cover 232 and the side wall 233 are enclosed to form an accommodation space 234 for receiving the rotor 230 of the centrifugal fan 23. The upper cover 231 and the lower cover 232 are respectively provided with a first air inlet 235 and a second air inlet 9 200823642 236 at positions corresponding to the rotor 230. The lower cover 232 is disposed at a position of the second air inlet 236. The support portion 237 supports the rotor 230 to rotate in the counterclockwise direction in the accommodating space 234 to generate heat for the heat-generating electronic component 1 . airflow. A first air outlet 238 is formed on one side of the side wall 233. The heat dissipation fin group 21 is disposed at the first air outlet 238 and is connected to the condensation section 251 of the heat pipe 25. The side wall 233 extends horizontally away from the centrifugal fan 23 on the other side opposite to the first air outlet 238, and is parallel to the plate body 26 of the lower cover 232, and is connected to the side wall 233 adjacent to the plate body 26. A smaller second air outlet 239 is opened in the part. The plate body 26 is attached to the heat-generating electronic component 1 and connected to the evaporation section 253 of the heat pipe 25. The heat generated by the heat-generating electronic component 10 is transmitted to the heat dissipation fin group 21 via the heat pipe 25. The first air outlet 238 is larger than the second air outlet 239, so that most of the airflow generated by the centrifugal fan 23 flows out of the first air outlet 238 through the heat dissipation fin group 21, and a small portion of the air flow is also from the second air outlet 239. It flows out and directly blows the heat-emitting electronic component 1〇. In this embodiment, the centrifugal fan 23 is operated in the counterclockwise direction, so that the airflow blown by the second air outlet 239 is directly blown toward the heat generating electronic component 1 , and the second air outlet 239 is disposed in the heat generating electronic component 1 On the left side, the second air outlet 239 is located in front of the heat-generating electronic component 10 in the direction of rotation of the centrifugal fan 23. Similarly, in the case where the centrifugal fan 23 is operated in the clockwise direction, the second air outlet 239 is disposed on the right side of the heat-generating electronic component 10 to ensure that the 200823642 airflow blown by the second air outlet 239 is directly blown to the heat-generating electronic component. Οο. The heat dissipation fin group 21 has an upper surface 211 which is in contact with the condensation section 251 of the heat pipe 25 and a lower surface 212 which is in contact with the lower cover 232 of the centrifugal fan 23. The lower surface 212 of the heat dissipation fin group 21 is opened. A groove 213 extends along the length of the heat dissipation fin group 21, and the lower cover 232 of the centrifugal fan 23 protrudes from the first air outlet 238 to protrude from the groove 213 by two elongated protrusions 241. When the heat dissipation fin group 21 is mounted to the first air outlet 238 of the centrifugal fan 23, the bump 241 is disposed in the recess 213 provided in the lower surface 212 of the heat dissipation fin group 21 to prevent the heat dissipation fin. The sheet set 21 slides out of the centrifugal fan 23 in a direction perpendicular to the bumps 241. As shown in FIG. 4, when the heat dissipation module 20 is in operation, the heat pipe 25 transmits a part of the heat generated by the heat-generating electronic component 10 to the heat dissipation fin group 21, and the airflow blown through the first air outlet 238 of the centrifugal fan 23 The part of the heat is blown out of the casing of the notebook computer and distributed to the surrounding environment to form a first heat dissipation path; at the same time, another part of the heat generated by the heat-generating electronic component 10 is blown out by the second air outlet 239 of the centrifugal fan 23. The air stream is directly blown for cooling to form a second heat dissipation path. The heat dissipation module 20 heats the heat-generating electronic component 10 by using two heat dissipation paths, and the heat dissipation performance is further improved compared with the conventional heat dissipation module having only one air outlet; and the heat dissipation module 20 does not increase. Before the volume and weight of the notebook computer are lifted, the heat dissipation performance can be improved only by opening the second air outlet 239 11 200823642 on the side wall 233 of the centrifugal fan 23, and the conventional fan is added to the fan. Compared with the heat dissipation module that improves the heat dissipation performance, it has the advantages of improving the heat dissipation performance without increasing the cost and the versatility. % = above, the present invention is in accordance with the requirements of the invention patent, and the above-mentioned one is only a preferred embodiment of the present invention, and those who are familiar with the case are blessing the bride in this case. Equivalent modifications or variations are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view of an electronic device of the present invention. Figure. Figure 2 is a three-dimensional decomposition of the electronic skirt of the present invention along another angle
iSI J ’、發明電子裝置之立體組裝圖。 蓋後月電子裝置之散熱模組去掉熱管及上 【主要元件符號說明】 電子裝置 】 散熱模組 上表面 凹槽 轉子 下蓋 容置空間 第二進風口 第一出風口 20 211 213 230 232 234 236 238 發熱電子元件 10 散熱鰭片組 21 下表面 212 離心風扇 23 上蓋 231 侧壁 233 第一進風口 235 支撐部 237 第二出風口 239 12 200823642 凸塊 241 熱管 25 冷凝段 251 蒸發段 253 板體 26 13iSI J ', an assembled view of the inventive electronic device. The heat-dissipation module of the electronic device of the cover is removed from the heat pipe and the main components are marked. [Electronic device] The upper surface of the heat-dissipating module is recessed. The lower cover of the rotor is the second air inlet. The first air outlet 20 211 213 230 232 234 236 238 Heated electronic component 10 Heat sink fin 21 Lower surface 212 Centrifugal fan 23 Upper cover 231 Side wall 233 First air inlet 235 Support part 237 Second air outlet 239 12 200823642 Bump 241 Heat pipe 25 Condensation section 251 Evaporation section 253 Plate body 26 13