TWM529763U - Flow rate enhanced composite blade structure of axial fan - Google Patents
Flow rate enhanced composite blade structure of axial fan Download PDFInfo
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本創作涉及機械型扇熱設備領域,尤其涉及一種軸流風扇之複合扇葉風量增進結構。 The present invention relates to the field of mechanical fan heat equipment, and more particularly to a composite fan blade air volume enhancement structure of an axial fan.
隨著電腦產業迅速發展,中央處理器(CPU)等晶片不斷地追求高功能化、高速度化及微型化,使得熱能堆積問題越來越嚴重,如何將電子晶片等發熱體之熱能移除逐漸地受到重視,業界最常採用的散熱元件不外乎是導熱體、熱管、散熱片及散熱風扇,其中最具立竿見影效果的便是散熱風扇,利用散熱風扇所產生之低溫氣流吹拂發熱體而發生熱交換效果,而將熱能排出機殼外部,故散熱風扇在所有的散熱元件中具有相當重要的地位。 With the rapid development of the computer industry, the central processing unit (CPU) and other chips are constantly pursuing high functionality, high speed and miniaturization, which makes the thermal energy accumulation problem more and more serious. How to remove the thermal energy of the heating element such as the electronic chip gradually The ground is valued. The most commonly used heat dissipating components in the industry are heat conductors, heat pipes, heat sinks and cooling fans. The most immediate effect is the cooling fan, which is generated by the low-temperature airflow generated by the cooling fan. The heat exchange effect, while the heat is discharged outside the casing, the cooling fan has a very important position in all the heat dissipating components.
參考附圖1,常見的散熱風扇主要包含有:一扇框(圖中未示)及容置於該扇框內的扇葉組1,其中該扇葉組1由一輪轂10以及分設於輪轂10周圍的多片扇葉11所構成,該扇葉組1於扇框內旋轉時,其扇葉11會帶動空氣產生一軸向氣流,該扇葉組1轉速越高、氣流流速越快、風量越大所能產生熱交換效果越佳,如何在有限的轉速範圍追求大風量及高風壓為業界普遍的技術瓶頸。上述中,每片扇葉11設有相對應的上弧面111及下弧面112,且該下弧面112的弧面較該上弧面111平緩,故當該扇葉組1轉動擾動氣 流時,該氣流分別於該上弧面111及該下弧面112產生不同的壓力及流速,依白努利定律(Bernoulli)氣流,位於上弧面111上的氣流流速較高,壓力較低,位於下弧面112上的氣流流速較低,壓力較高,因此,大部分氣流均會流入低壓的上弧面,導致流入上弧面111及下弧面112的氣流均會于各扇葉11尾端產生兩股不同流向及流速的氣流,一般來說:下弧面112的氣流均朝軸向流動故稱為軸向氣流,上弧面111的氣流流向均沿切線方向,故稱切線氣流,但,該切線氣流氣流量較大,故會與軸向速氣流抵銷而產生渦流損失,導致風扇風量及風壓無法有效地提升。 Referring to FIG. 1, a common cooling fan mainly includes: a frame (not shown) and a blade group 1 accommodated in the frame, wherein the blade group 1 is composed of a hub 10 and is divided into A plurality of blades 11 around the hub 10 are formed. When the blade group 1 rotates in the frame, the blade 11 drives the air to generate an axial airflow. The higher the rotational speed of the blade group 1 is, the faster the airflow rate is. The greater the air volume, the better the heat exchange effect. How to pursue high air volume and high wind pressure in a limited speed range is a common technical bottleneck in the industry. In the above, each of the blades 11 is provided with a corresponding upper curved surface 111 and a lower curved surface 112, and the curved surface of the lower curved surface 112 is gentler than the upper curved surface 111, so when the blade group 1 rotates disturbing gas During the flow, the air flow generates different pressures and flow rates on the upper curved surface 111 and the lower curved surface 112 respectively. According to the Bernoulli flow, the flow velocity on the upper curved surface 111 is higher, and the pressure is lower. The flow velocity on the lower arc surface 112 is lower and the pressure is higher. Therefore, most of the airflow flows into the upper arc surface of the low pressure, so that the airflow flowing into the upper arc surface 111 and the lower arc surface 112 is applied to each fan blade. At the end of the 11th, two streams of different flow directions and flow rates are generated. Generally speaking, the airflow of the lower arc surface 112 flows toward the axial direction, so it is called the axial airflow, and the airflow direction of the upper arc surface 111 is in the tangential direction, so it is called the tangent. Airflow, however, the tangential airflow has a large gas flow rate, so it will offset the axial velocity airflow and cause eddy current loss, which may cause the fan air volume and wind pressure to be effectively increased.
為此,如何改善扇葉尾端的氣流量較大的切線氣流並將其彎折為可作功的軸向氣流,進而提升扇葉的風量為本實用創作所鑽的課題。 To this end, how to improve the tangential airflow with a large airflow at the end of the blade and bend it into a workable axial airflow, thereby increasing the air volume of the blade is a subject of practical creation.
本創作要解決的技術問題是針對現有設計技術中存在的缺陷,提供一種軸流風扇之複合扇葉風量增進結構,該風扇雜訊小,轉動平穩,風扇的風量得到增強。 The technical problem to be solved in this creation is to provide a composite fan blade air volume enhancement structure of the axial flow fan according to the defects existing in the existing design technology, the fan noise is small, the rotation is stable, and the fan air volume is enhanced.
為解決上述技術問題,本創作採取的技術方案如下:一種軸流風扇之複合扇葉風量增進結構,該扇葉包含:一輪轂以及若干片第一葉片,所述若干第一葉片內側端分設于輪轂周圍;在所述若干第一葉片外側端上增設若干第二葉片,且每一所述第二葉片通過兩支撐肋與位於該第二葉片前後位置上兩所述第一葉片連接;所述第二葉片面積小於所述第一葉片面積,且所述第一葉片和第二葉片交錯設置,使所述第一葉片上方氣流經第二葉片彎折流入該第一葉片下方的軸向氣流中。 In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a composite fan blade air volume enhancement structure of an axial flow fan, the blade includes: a hub and a plurality of first blades, wherein the inner ends of the plurality of first blades are separately provided a plurality of second blades are added to the outer ends of the plurality of first blades, and each of the second blades is connected to the first blades at the front and rear positions of the second blades by two supporting ribs; The second blade area is smaller than the first blade area, and the first blade and the second blade are staggered so that the airflow above the first blade is bent into the axial flow below the first blade by the second blade in.
作為對上述技術方案的進一步闡述: As a further explanation of the above technical solutions:
在上述技術方案中,所述兩支撐肋包含第一支撐肋和第二支撐肋,每一所述第二葉片的外側端通過第一支撐肋連接位於該第二葉片前後位置上的兩所述第一葉片其中之一的外側端,且所述第二葉片的外側端與和其連接的所述第一葉片的外側端平齊,該所述第二葉片的內側端通過第二支撐肋連接到另一所述的第一葉片上。 In the above technical solution, the two supporting ribs include a first supporting rib and a second supporting rib, and the outer ends of each of the second blades are connected to the two at the front and rear positions of the second blade by the first supporting rib. An outer end of one of the first vanes, and an outer end of the second vane is flush with an outer end of the first vane to which the second vane is connected, and an inner end of the second vane is connected by a second support rib Go to the other first blade.
在上述技術方案中,所述第二葉片和與其外側端相連的所述第一葉片保持一間距,該間距寬度與所述第一支撐肋長度相匹配。 In the above technical solution, the second blade and the first blade connected to the outer end thereof maintain a spacing which matches the length of the first support rib.
在上述技術方案中,所述第二葉片和與其內側端相連的所述第一葉片保持一間隔,該間隔的區間寬度與所述第二支撐肋長度相匹配,且所述第一葉片、第二葉片及第二支撐肋在該間隔區間上形成增強軸向風量的增強區間。 In the above technical solution, the second blade and the first blade connected to the inner end thereof maintain a space, the interval width of the interval matches the length of the second support rib, and the first blade, the first blade The two blades and the second support rib form an enhanced interval for enhancing the axial air volume over the interval.
在上述技術方案中,所述第一葉片上設有位於上、下兩相對應面的第一上弧面及第一下弧面,所述第二葉片上設有位於上、下兩相對應面的第二上弧面及第二下弧面,且所述第一葉片和第二葉片的上下弧面保持匹配對應。 In the above technical solution, the first blade is provided with a first upper curved surface and a first lower curved surface on the upper and lower corresponding surfaces, and the second blade is disposed on the upper and lower sides. The second upper curved surface and the second lower curved surface of the surface, and the upper and lower curved surfaces of the first blade and the second blade are matched and matched.
本創作的有益效果在於:本實用創作利用第二葉片將流經第一葉片的第一上弧面上的氣流彎折入第二下弧面,令下弧面產生的軸向氣流可有效地增加風扇的風量。且風扇雜訊小,轉動平穩。 The utility model has the beneficial effects that the utility model uses the second blade to bend the airflow flowing through the first upper arc surface of the first blade into the second lower arc surface, so that the axial airflow generated by the lower arc surface can be effectively Increase the fan's air volume. The fan noise is small and the rotation is stable.
1‧‧‧輪轂 1‧‧·wheels
2‧‧‧第一葉片 2‧‧‧First blade
3‧‧‧第二葉片 3‧‧‧second blade
4‧‧‧支撐肋 4‧‧‧Support ribs
21‧‧‧第一上弧面 21‧‧‧First upper curved surface
22‧‧‧第一下弧面 22‧‧‧First lower curved surface
31‧‧‧第二上弧面 31‧‧‧Second upper curved surface
32‧‧‧第二下弧面 32‧‧‧Second lower arc
41‧‧‧第二支撐肋 41‧‧‧second support rib
42‧‧‧第一支撐肋 42‧‧‧First support rib
圖1是現有風扇的立體結構示意圖。 1 is a schematic perspective view of a conventional fan.
圖2是本創作的風扇的立體結構示意圖之一,風向箭頭表示風的走向。 2 is a schematic perspective view of the fan of the present invention, and the wind direction arrow indicates the direction of the wind.
圖3是本創作的風扇的立體結構示意圖之二。 FIG. 3 is a second schematic structural view of the fan of the present invention.
下面結合附圖對本創作作進一步詳細的說明。 The present invention will be further described in detail below with reference to the accompanying drawings.
附圖2-3實例本創作的一種實施例。參考附圖2-3,一種軸流風扇之複合扇葉風量增進結構,該扇葉包含:一輪,1以及若干片第一葉片2,其中,第一葉片2包括位於上、下兩相對應面的第一上弧面21及第一下弧面22(第一上弧面21為凸弧面,而第一下弧面22為凹弧面);所述若干第一葉片2內側端分設於輪轂1周圍;在所述若干第一葉片2外側端上增設若干第二葉片3,其中,第二葉片3包括位於上、下兩相對應面的第二上弧面31及第二下弧面32(當然,第二上弧面31為凸弧面,而第二下弧面32為凹弧面),第一葉片2和第二葉片3的上、下弧面保持對應平行(也就是第一上弧面21和第二上弧面31保持平行,該平行是指弧面的弧度及趨勢保持一致,在弧面上處於相對應位置上的兩點間的距離始終相等,同樣,下弧面也對應平行);每一所述第二葉片3通過兩支撐肋4與位於該第二葉片3前後位置上兩所述第一葉片2連接(本文中,前後位置上的兩所述第一葉片2,是指沿輪轂1圓周逆時針方式的前後)。此外,所述第二葉片3面積小於所述第一葉片2面積,且所述第一葉片2和第二葉片3交錯設置,使所述第一葉片2上方氣流經第二葉片2彎折流入該第一葉片2下方的軸向氣流中;當扇葉旋轉時,該輪轂1周圍的若干片第一葉片2帶動空氣產生一軸向氣流,該扇葉轉速越高所帶動的氣流流速越快,相對地,產生的風量越大。參考附圖2,所述兩支撐肋4包含第一支撐肋42和第二支撐肋41,每一所述第二葉片3的外側端通過第一支撐肋42連接位於該第二葉片3前後位置上的兩所述第一葉片2其中之一 的外側端,且所述第二葉片2的外側端與和其連接的所述第一葉片2的外側端平齊,該所述第二葉片2的內側端通過第二支撐肋41連接到另一所述的第一葉片2上(需要說明是,本文中,前後位置上的兩第一葉片2中間通過兩支撐肋4和第二葉片3連接,第一支撐肋42連接第二葉片3的外端,內側端則通過第二支撐肋41連接另一第一葉片2的中部,除了強化第一葉片2穩定性之外,還能用於增加的第二葉片3的支撐)。其中,第二葉片3和第一葉片2之間形成有兩間隔空間,其中之一為第二葉片3與後一第一葉片2形成的間隔空間,也即所述第二葉片3和與其外側端相連的所述第一葉片2保持一間距設置,該間距寬度與所述第一支撐肋42長度相匹配;另一間隔為第二葉片3相對在前的第一葉片2形成的間隔空間,也就是所述第二葉片3和與其內側端相連的所述第一葉片2保持一間隔設置,該間隔的區間寬度與所述第二支撐肋41長度相匹配,而另一種間隔區間所述第一葉片1、第二葉片2及第二支撐肋41構成並形成增強軸向風量的增強區間。本實施例中,在扇葉轉動時,第一葉片2的第一上弧面21上的氣流經第二葉片3彎折並由軸向風量的增強區間流入第一葉片2的第一下弧面22所形成的軸向氣流中(如圖2所示)除可增加軸向氣流的風量外,同時有效減少該切線氣流與軸向氣流間所產生的渦流損失。 Figures 2-3 illustrate an embodiment of the present creation. Referring to Figures 2-3, a composite fan air volume enhancement structure of an axial flow fan includes: a wheel, 1 and a plurality of first blades 2, wherein the first blade 2 includes upper and lower corresponding faces The first upper curved surface 21 and the first lower curved surface 22 (the first upper curved surface 21 is a convex curved surface, and the first lower curved surface 22 is a concave curved surface); the inner ends of the first first vanes 2 are separately provided A plurality of second blades 3 are added to the outer ends of the plurality of first blades 2, wherein the second blades 3 include a second upper curved surface 31 and a second lower arc at the upper and lower opposite surfaces. Face 32 (of course, the second upper curved surface 31 is a convex curved surface, and the second lower curved surface 32 is a concave curved surface), and the upper and lower curved surfaces of the first blade 2 and the second blade 3 are kept parallel (that is, The first upper curved surface 21 and the second upper curved surface 31 are kept parallel, and the parallel means that the arc and the curvature of the curved surface are consistent, and the distance between the two points at the corresponding positions on the curved surface is always equal, and the same The curved faces are also parallel; each of the second blades 3 is connected to the first blades 2 at the front and rear positions of the second blades 3 through the two supporting ribs 4 In the present invention, the two first blades 2 in the front and rear positions refer to the front and rear of the hub 1 in a counterclockwise manner. In addition, the area of the second blade 3 is smaller than the area of the first blade 2, and the first blade 2 and the second blade 3 are staggered, so that the airflow above the first blade 2 is bent and flows through the second blade 2. In the axial airflow below the first blade 2; when the blade rotates, the plurality of first blades 2 around the hub 1 drive the air to generate an axial airflow, and the higher the rotational speed of the blade, the faster the flow rate of the airflow In contrast, the amount of wind generated is greater. Referring to FIG. 2, the two supporting ribs 4 include a first supporting rib 42 and a second supporting rib 41, and the outer ends of each of the second blades 3 are connected by the first supporting ribs 42 at the front and rear positions of the second blade 3. One of the two first blades 2 The outer end of the second blade 2 is flush with the outer end of the first blade 2 connected thereto, and the inner end of the second blade 2 is connected to the other through the second support rib 41 On the first blade 2 described above (it is to be noted that, in the present description, the two first blades 2 in the front and rear positions are connected by two supporting ribs 4 and the second blade 3, and the first supporting ribs 42 are connected to the second blade 3 The outer end, the inner end is connected to the middle of the other first blade 2 through the second support rib 41, in addition to strengthening the stability of the first blade 2, it can also be used for the support of the added second blade 3. Wherein, two spaced spaces are formed between the second blade 3 and the first blade 2, one of which is a space formed by the second blade 3 and the latter first blade 2, that is, the second blade 3 and the outer side thereof The first blades 2 connected at the ends are maintained at a pitch which matches the length of the first support ribs 42; the other interval is a space formed by the second blades 3 with respect to the preceding first blades 2, That is, the second vane 3 and the first vane 2 connected to the inner end thereof are spaced apart, the interval width of the interval is matched with the length of the second supporting rib 41, and the other interval is the same. One blade 1, the second blade 2, and the second support rib 41 constitute and form an enhanced section for enhancing the axial air volume. In this embodiment, when the blade rotates, the airflow on the first upper curved surface 21 of the first blade 2 is bent by the second blade 3 and flows into the first lower arc of the first blade 2 by the enhanced section of the axial air volume. The axial flow formed by the face 22 (shown in Figure 2), in addition to increasing the amount of axial airflow, while effectively reducing the eddy current losses generated between the tangential flow and the axial flow.
以上所述並非對本創作的技術範圍作任何限制,凡依據本創作技術實質對以上的實施例所作的任何修改、等同變化與修飾,均仍屬於本新型的技術方案的範圍內。 The above description is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments in accordance with the spirit of the present invention are still within the scope of the present invention.
1‧‧‧輪轂 1‧‧·wheels
2‧‧‧第一葉片 2‧‧‧First blade
3‧‧‧第二葉片 3‧‧‧second blade
4‧‧‧支撐肋 4‧‧‧Support ribs
21‧‧‧第一上弧面 21‧‧‧First upper curved surface
31‧‧‧第二上弧面 31‧‧‧Second upper curved surface
41‧‧‧第二支撐肋 41‧‧‧second support rib
42‧‧‧第一支撐肋 42‧‧‧First support rib
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Applications Claiming Priority (1)
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CN201520734764.3U CN205154745U (en) | 2015-09-22 | 2015-09-22 | Structure is promoted to axial fan's complex flabellum amount of wind |
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TWM529763U true TWM529763U (en) | 2016-10-01 |
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TW104218285U TWM529763U (en) | 2015-09-22 | 2015-11-13 | Flow rate enhanced composite blade structure of axial fan |
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Cited By (1)
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US10808715B2 (en) | 2017-10-26 | 2020-10-20 | Acer Incorporated | Heat dissipation fan |
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CN111828162B (en) * | 2018-06-29 | 2022-01-28 | 温岭市通驰汽车空调制造有限公司 | Heat radiator for be used for automobile engine |
CN111022356A (en) * | 2019-12-31 | 2020-04-17 | 佛山市云米电器科技有限公司 | Double-blade fixed cluster fan blade structure, axial flow fan and air conditioner |
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2015
- 2015-09-22 CN CN201520734764.3U patent/CN205154745U/en active Active
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Cited By (1)
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US10808715B2 (en) | 2017-10-26 | 2020-10-20 | Acer Incorporated | Heat dissipation fan |
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