1334530 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種風扇葉輪，尤指 熱之散熱風扇上之風扇葉輪。 [0002] [0003] [0004] 099年08月26日 一種應用於電子元件散 隨著電腦產業迅速發展，晶片法#古ώ 追未间連度化、高功能化 所衍生之散熱問題越來越嚴重?脸& ^為了將電子發熱元件產 生之熱量有效地散發到系統外夕塔^士 r之環i兄中，以維持電子發 熱元件在適宜之溫度下運作，ig嗤· +·〇田—t 通常私用可提供較大風量 之散熱風扇，用以協助電子發熱元件散熱，使電子發熱 元件穩定運作並延長發熱元件之壽命。 … 目前散熱風扇主要分為贿式風扇與離心式風扇兩大類 ’而在各類散熱風扇中增進散熱風扇之效能不外乎為改 變扇葉形狀以增強W力、加大扇葉面積及長度以增 加散熱風扇之流量與流速等。 3 上述改變扇葉形狀及加大扇葉長度之方式雖然可增進散 熱風扇之流量及流速，但通常會導致扇葉強度之下降， 進而使扇葉在散熱風扇高速轉動時發生振動（若產生共振 時振動更為嚴重）’而扇葉振動則導致氣流不穩定造成 更大之深音’強度之下降將使得扇葉容易發生彎曲若 長時間於高速下運轉，則扇葉將永久彎曲變形。風扇葉 輪之上述強度不夠及容易變形之問題嚴重影響到整個散 熱風扇之使用壽命與效能。 【發明内容】 [0005]有鑒於此’有必要提供一種具較高強度之風扇葉輪。 096125596 表單編號A0101 第3頁/共12頁 0993306881-0 1334530 [0006] [0007] [0008] [0009] [0010] 096125596 099年08月26日接正替换頁 一種風扇葉輪，包括輪轂及環設于輪轂周圍之複數扇葉 ，至少一細線穿過每一扇葉而形成一圓環，該圓環之圓 心位於風扇葉輪之軸線上。 一種風扇葉輪，包括輪轂及從該輪轂向外延伸分佈之複 數扇葉，所述複數扇葉之自由端通過至少一細線相互連 接在一起。 上述風扇葉輪通過在每一扇葉上穿設細線而形成一圓環 ，將各個分離之扇葉連接成一個整體，可加強扇葉之強 度，防止扇葉在高速運轉時變形，且能有效減少扇葉之 振動，從而提高風扇葉輪之效能。 【實施方式】 請同時參閱圖1和圖2，該實施例中以離心式散熱風扇為 例說明風扇葉輪之結構。該風扇葉輪包括輪轂10、環板 11及複數扇葉12。 ' 輪轂10呈圓形，其中央連接一轉軸（圖未示），該轉軸 可收容於散熱風扇之軸承内，使該風扇葉輪可轉動地安 裝至散熱風扇之扇框内，相對散熱風扇之定子轉動。環 板11環設於輪轂10之外周面上，每一扇葉12呈長條形， 且呈輻射狀地從環板11上向外延伸。扇葉12具有與環板 11連接之一連接段121及與該連接段121相對之一自由端 122。扇葉12之連接段121設於環板11上且該連接段121 之末端與輪轂10之外周面相隔有一定間距。扇葉12之高 度大於環板11之厚度，因此扇葉12之連接段121之上、下 兩侧邊凸伸出環板11之上、下表面。靠近扇葉12之自由 端122末端且位於扇葉12高度方向之中間部分之位置設有 表單編號A0101 第4頁/共12頁 0993306881-0 099年08月26日修正替換頁 1334530 一通孔以供一細線14穿過。該細線14具有較高之機械強 度，本實施例中細線14由鋼製成，當然也可以由其他具 有高強度之材料製成。該細線14具有均勻之直徑，且細 線14穿過每一扇葉12之自由端122上之通孔形成一圓環， 該圓環之圓心位於輪轂10之軸線上，從而使風扇葉輪在 運轉時具較好之穩定性。 [0011] 成型該風扇葉輪時，可先將該圓環狀細線14預設於成型 風扇葉輪之模具内，從而在注塑成型葉輪之過程中將細 線14一體固定于扇葉12内。該風扇葉輪運轉時，由於細 線14形成一圓環且固設在扇葉12内，使原來相互分離之 各扇葉12之自由端122連接成一整體，可加強扇葉12之強 度，抑制扇葉12之彎曲變形，防止扇葉12在高速運轉時 發生振動，從而可以提高整個風扇葉輪之穩定性及使用 壽命。同時，細線14具有均勻之直徑，且其形成之圓環 之圓心位於輪轂10之軸線上，即細線14形成之圓環相對 於輪轂10之中心呈均勻對稱性，其固定穿設在扇葉12中 可以避免風扇葉輪之重心發生偏移，不會成為風扇葉輪 在運轉時之不穩定因素，而只會對風扇葉輪之扇葉12形 成加強強度和穩定性之功效。另外，在輪轂10之外周面 上環設有環板11，扇葉12之連接段121之上下兩側邊凸伸 出環板11之上、下表面，藉由該扇葉12之連接段121之凸 伸部分可推動環板11上下兩側氣體之流動產生氣流，使 離心風扇之流量增加。而藉由該環板11又可以使扇葉12 之連接強度增加，以保證扇葉12不會因太高之轉速而被 折斷。 096125596 表單編號A0101 第5頁/共12頁 0993306881-0 1334530 099年08月26日修正 [0012] 如圖3和圖4為風扇葉輪之另一實施例，該風扇葉輪同樣 包括圓形之輪轂l〇a、環設於輪轂l〇a外周面之環板11 a 和從環板11a向外輻射延伸形成之複數長條形之扇葉丨2a 。每一扇葉12a具有與環板lla連接之一連接段I21a及與 該連接段12 la相對之一自由端122a。為進一步加強扇葉 12a之機械強度和穩定性’在扇葉i2a之自由端122a於其 尚度方向之上下兩端各穿設一細線14a、14b形成兩個圓 環。細線14a、14b同樣由金屬等具有高強度性質之材料 製成’且具有均勻之直徑。細線14a、14b形成之圓環其 圓心同樣位於輪轂l〇a之軸線上。該風扇葉輪之其他結構 與上述實施例中之相同，在此不再贅述β [0013] 如圖5所示為風扇葉輪之又一實施例。該風扇葉輪與上一 實施例中一樣包括圓形之輪轂l〇c、環設於輪轂1〇(：外周 面之環板11c和從環板11c向外輻射延伸形成之複數長條 形之扇葉12c。每一扇葉12c上穿設兩細線14c、14d，不 同之處在於細線14c于扇葉12c之徑向長度方向上之中部 穿s又，細線14d于扇葉12c之控向長度方向上之末端穿設 〇 [0014] 上述實施例中都係細線14(14a、14b、14c、14d)穿設 在離心風扇之扇葉12( 12a ' 12c)中以加強其強度及穩定 性’實際上該等細線14(14a、14b、14c、14d)並不限 於應用在離心風扇中，在具有較大或較長之扇葉之軸流 式風扇或其他類型之風扇中也可以採用該種設置，將各 個分離之扇葉自由端連接成一整體，從而提高扇葉之機 械強度及穩定性。 096125596 表單編號A0101 第6頁/共12頁 0993306881-0 1334530 _ 099年08月26日梭正替換頁 [0015] 综上所述，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】 [0016] 圖1為風扇葉輪之立體示意圖。 [0017] 圖2為圖1之局部放大示意圖。 [0018] 圖3為另一實施例之立體不意圖。 [0019] 圖4為圖3之局部放大示意圖。 [0020] 圖5為又一實施例之立體示意圖。 【主要元件符號說明】 [0021] 輪轂：10、10a、10c [0022] 環板：11、11a、11c [0023] 扇葉：12、12a、12c [0024] 連接段：121、121a [0025] 自由端：122、122a [0026] 細線：14、14a、14b、14c、14d 096125596 表單编號A0101 第7頁/共12頁 0993306881-01334530 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a fan impeller, and more particularly to a fan impeller on a heat dissipating fan. [0002] [0003] [0004] On August 26, 099, a kind of application of electronic components scattered with the rapid development of the computer industry, the chip method #古ώ chasing the gap between the high-functionality of the heat problem The more serious? Face & ^ In order to effectively dissipate the heat generated by the electronic heating element to the outside of the system, to maintain the electronic heating element operating at a suitable temperature, ig嗤···〇 Tian-t is usually used for private use to provide a large amount of cooling fan to assist the heat dissipation of the electronic heating element, so that the electronic heating element can operate stably and prolong the life of the heating element. ... At present, the cooling fan is mainly divided into two categories: bribe fan and centrifugal fan. The efficiency of the cooling fan in various types of cooling fans is nothing more than changing the shape of the blade to enhance the W force and increase the fan area and length. Increase the flow rate and flow rate of the cooling fan. 3 The above method of changing the shape of the blade and increasing the length of the blade can improve the flow rate and flow rate of the cooling fan, but usually causes the blade strength to decrease, and then the blade vibrates when the cooling fan rotates at a high speed (if resonance occurs) When the vibration is more serious, 'the vibration of the fan blade causes the airflow to be unstable and causes a deeper sound. 'The drop in strength will make the blade easy to bend. If the blade is running at high speed for a long time, the blade will be permanently bent and deformed. The above-mentioned insufficient strength and easy deformation of the fan blade seriously affect the service life and performance of the entire heat dissipation fan. SUMMARY OF THE INVENTION [0005] In view of this, it is necessary to provide a fan impeller having a higher strength. 096125596 Form No. A0101 Page 3 / Total 12 Page 0993306881-0 1334530 [0006] [0007] [0008] [0009] [0010] 096125596 August 26, 2008, the replacement page is a fan impeller, including the hub and ring At a plurality of blades around the hub, at least one thin line passes through each of the blades to form a ring whose center is located on the axis of the fan wheel. A fan wheel includes a hub and a plurality of blades extending outwardly from the hub, the free ends of the plurality of blades being coupled to each other by at least one thin wire. The fan impeller is formed by forming a ring on each of the blades to form a ring, and connecting the separated blades into a whole body, thereby strengthening the strength of the blade, preventing the blade from being deformed during high-speed operation, and effectively reducing The vibration of the fan blades increases the efficiency of the fan impeller. [Embodiment] Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, a centrifugal fan is taken as an example to describe the structure of the fan impeller. The fan wheel includes a hub 10, a ring plate 11 and a plurality of blades 12. The hub 10 is circular, and its center is connected to a rotating shaft (not shown). The rotating shaft can be received in the bearing of the cooling fan, so that the fan impeller is rotatably mounted in the fan frame of the cooling fan, and the stator of the cooling fan is opposite. Turn. The ring plate 11 is looped on the outer peripheral surface of the hub 10, and each of the blades 12 has an elongated shape and radially extends outward from the ring plate 11. The blade 12 has a connecting section 121 connected to the ring plate 11 and a free end 122 opposite the connecting section 121. The connecting portion 121 of the blade 12 is disposed on the ring plate 11 and the end of the connecting portion 121 is spaced apart from the outer peripheral surface of the hub 10. The height of the blade 12 is greater than the thickness of the ring plate 11, so that the upper and lower sides of the connecting portion 121 of the blade 12 project above and below the ring plate 11. Near the end of the free end 122 of the blade 12 and at the middle of the height direction of the blade 12, there is a form number A0101. Page 4/12 pages 0993306881-0 Aug. 26, 2008 Correction replacement page 1334530 A through hole for A thin line 14 passes through. The thin wire 14 has a high mechanical strength. In the present embodiment, the thin wire 14 is made of steel, and of course, it can be made of other materials having high strength. The thin wire 14 has a uniform diameter, and the thin wire 14 passes through a through hole in the free end 122 of each blade 12 to form a circular ring whose center is located on the axis of the hub 10 so that the fan impeller is in operation Has a good stability. [0011] When the fan impeller is formed, the annular thin wire 14 may be preset in the mold of the forming fan impeller, so that the thin wire 14 is integrally fixed in the blade 12 during the injection molding of the impeller. When the fan impeller is in operation, since the thin wire 14 forms a ring and is fixed in the blade 12, the free ends 122 of the blades 12 which are originally separated from each other are integrally connected to strengthen the strength of the blade 12 and suppress the blade. The bending deformation of 12 prevents the fan blade 12 from vibrating at high speed, thereby improving the stability and service life of the entire fan impeller. At the same time, the thin wire 14 has a uniform diameter, and the center of the ring formed by it is located on the axis of the hub 10, that is, the ring formed by the thin wire 14 is uniformly symmetrical with respect to the center of the hub 10, and is fixedly disposed on the blade 12 In this way, the center of gravity of the fan impeller can be prevented from shifting, and it will not become an unstable factor in the operation of the fan impeller, but only the effect of strengthening the strength and stability of the fan blade 12 of the fan impeller. In addition, a ring plate 11 is disposed on the outer circumferential surface of the hub 10. The upper and lower sides of the connecting portion 121 of the blade 12 protrude from the upper and lower surfaces of the ring plate 11, and the connecting portion 121 of the blade 12 is The protruding portion can push the flow of the gas on the upper and lower sides of the ring plate 11 to generate an air flow, so that the flow rate of the centrifugal fan is increased. By the ring plate 11, the connection strength of the blade 12 can be increased to ensure that the blade 12 is not broken by the excessively high rotational speed. 096125596 Form No. A0101 Page 5 / Total 12 Page 0993306881-0 1334530 Modified on August 26, 099 [0012] Another embodiment of a fan impeller is shown in FIGS. 3 and 4, which also includes a circular hub 1 〇a, a ring plate 11a disposed on the outer circumferential surface of the hub l〇a, and a plurality of elongated blade blades 2a radiating outwardly from the ring plate 11a. Each of the blades 12a has a connecting portion I21a connected to the ring plate 11a and a free end 122a opposite to the connecting portion 12 la. To further enhance the mechanical strength and stability of the blade 12a, two thin wires 14a, 14b are formed at the lower ends of the blade end i2a at the lower end of the blade i2a to form two circular rings. The thin wires 14a, 14b are also made of a material having high strength properties such as metal and have a uniform diameter. The center of the ring formed by the thin wires 14a, 14b is also located on the axis of the hub l〇a. The other structure of the fan impeller is the same as that of the above embodiment, and no further description is given herein. [0013] Another embodiment of the fan impeller is shown in FIG. The fan impeller includes a circular hub l〇c, a ring set to the hub 1〇 (the ring plate 11c of the outer peripheral surface, and a plurality of elongated strips radiating outwardly from the ring plate 11c) as in the previous embodiment. The blade 12c is provided with two thin wires 14c, 14d on each of the blades 12c, except that the thin wire 14c is penetrated in the radial direction of the blade 12c, and the thin wire 14d is in the longitudinal direction of the blade 12c. The upper end is pierced [0014] The thin wires 14 (14a, 14b, 14c, 14d) in the above embodiment are disposed in the fan blade 12 (12a '12c) of the centrifugal fan to enhance its strength and stability'. The upper thin wires 14 (14a, 14b, 14c, 14d) are not limited to use in a centrifugal fan, and may be used in an axial fan or other type of fan having a larger or longer blade. The free ends of the separated blades are connected together to improve the mechanical strength and stability of the blades. 096125596 Form No. A0101 Page 6 of 12 0993306881-0 1334530 _ August 18, 2008 Shuttle replacement page [0015] In summary, the present invention meets the requirements of the invention patent, The patent application is only the preferred embodiment of the present invention, and those skilled in the art will be able to cover the equivalent modifications or variations in the spirit of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS [0016] Fig. 2 is a perspective view showing a fan impeller. [0017] Fig. 2 is a partially enlarged schematic view of Fig. 1. [0018] Fig. 3 is a perspective view of another embodiment. Fig. 4 is a partially enlarged schematic view of Fig. 3. [0020] Fig. 5 is a perspective view of still another embodiment. [Description of main components] [0021] Hub: 10, 10a, 10c [0022] Ring plate: 11, 11a, 11c [0023] Blades: 12, 12a, 12c [0024] Connection segments: 121, 121a [0025] Free ends: 122, 122a [0026] Thin lines: 14, 14a, 14b, 14c, 14d 096125596 Form number A0101 7 pages / total 12 pages 0993306881-0