TWM529077U - Primary fan blade capacity enhancement structure of axial flow fan - Google Patents

Primary fan blade capacity enhancement structure of axial flow fan Download PDF

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Publication number
TWM529077U
TWM529077U TW104220847U TW104220847U TWM529077U TW M529077 U TWM529077 U TW M529077U TW 104220847 U TW104220847 U TW 104220847U TW 104220847 U TW104220847 U TW 104220847U TW M529077 U TWM529077 U TW M529077U
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Taiwan
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blade
blades
axial flow
air volume
enhancement structure
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TW104220847U
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Chinese (zh)
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wen-fang Xu
Rong-Zhong Xie
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Power Logic Tech Dongguan Inc
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Description

軸流風扇的主扇葉上的扇葉風量增進結構 Fan blade air volume enhancement structure on the main fan blade of an axial fan

本創作涉及機械型扇熱設備領域,尤其涉及一種軸流風扇的主扇葉上的扇葉風量增進結構。 The present invention relates to the field of mechanical fan heat equipment, and more particularly to a blade air volume enhancement structure on a main fan blade 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 disposed on the hub. 10 is composed of a plurality of blades 11 around the fan blade group 1 when the fan blade group 1 rotates in the fan frame, and the fan blade 11 drives the air to generate an axial airflow. The higher the rotation speed of the blade group 1 is, the faster the airflow velocity 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 the disturbing airflow The airflow generates different pressures and flow rates on the upper curved surface 111 and the lower curved surface 112 respectively. According to the Bernoulli airflow, the airflow velocity on the upper curved surface 111 is higher and the pressure is lower. The flow velocity on the lower curved surface 112 is lower and the pressure is higher. Therefore, most of the airflow flows into the upper curved surface of the low pressure, so that the airflow flowing into the upper curved surface 111 and the lower curved surface 112 is applied to each of the blades 11 The tail end generates two streams of different flow directions and flow rates. Generally, the air flow of the lower arc surface 112 flows toward the axial direction, so it is called the axial air flow, and the air flow direction of the upper arc surface 111 is tangentially oriented, so it is called the tangent airflow. However, the tangential gas flow rate is large, so that the eddy current loss is generated by offsetting the axial velocity airflow, and the fan air volume and the wind pressure cannot be effectively improved.

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 the subject of the 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,提供一種軸流風扇的主扇葉上的扇葉風量增進結構,該風扇結構雜訊小,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 blade air volume enhancement structure on the main fan blade of the axial flow fan according to the defects existing in the existing design technology. The fan structure has small noise, stable rotation, 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:一種軸流風扇的主扇葉上的扇葉風量增進結構,包括輪轂及若干第一扇葉,所述第一扇葉上設有位於上、下兩相對應面的第一上弧面和第一下弧面,且所述若干第一扇葉的內側端固定於所述輪轂;在每一所述若干第一扇葉上開設有增量槽部,匹配所述增量槽部位置上設有與所述第一扇葉連接並保持一間距的第二扇葉,所述第二扇葉上設有位於上、下兩相對應面的第二上弧面和第二下弧面且所述第二扇葉面積小於所述第一扇葉,使所述第一扇葉上方氣流經增量槽部和第二扇葉彎折流入該第一扇葉下方的軸向氣流 中。 In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a blade air volume enhancement structure on a main fan blade of an axial flow fan, comprising a hub and a plurality of first blades, wherein the first blade is located on the upper blade a first upper curved surface and a first lower curved surface of the lower two corresponding surfaces, wherein the inner ends of the plurality of first blades are fixed to the hub; and each of the plurality of first blades is provided with an increase a groove portion, a second blade connected to the first blade and spaced apart from the first blade, and a second blade on the second blade a second upper curved surface and a second lower curved surface, and the second blade area is smaller than the first blade, so that the airflow above the first blade is bent through the incremental groove and the second blade Axial airflow below the first blade in.

作為對上述技術方案的進一步闡述:在上述技術方案中,所述第二扇葉的第二下弧面與所述第一扇葉的第一上弧面的延伸線保持一切線距。 As a further explanation of the above technical solution, in the above technical solution, the second lower curved surface of the second blade and the extension line of the first upper curved surface of the first blade maintain a line spacing.

在上述技術方案中,所述第二扇葉的第二下弧面始於所述第一扇葉的第一上弧面。 In the above technical solution, the second lower curved surface of the second blade starts from the first upper curved surface of the first blade.

在上述技術方案中,所述第二扇葉與所述增量槽部的形狀及尺寸相匹配。 In the above technical solution, the second blade matches the shape and size of the incremental groove portion.

在上技術方案中,每一所述第二扇葉設置於所述若干第一扇葉的位置為相一致或各不相同。 In the above technical solution, each of the second blades is disposed at a position of the first plurality of blades that are identical or different.

在上述技術方案中,設置於所述若干第一扇葉的位置為各不相同的若干所述第二扇葉呈陣列式地的設置,且沿所述輪轂圓周構成若干組第二扇葉組。 In the above technical solution, a plurality of the second blades disposed at different positions of the plurality of first blades are arranged in an array, and a plurality of second blade groups are formed along the circumference of the hub. .

在上述技術方案中,每一所述第二扇葉組包括至少3片所述第二扇葉,且每一所述第二扇葉組的所述第二扇葉於所述第一扇葉上呈階梯式排列。 In the above technical solution, each of the second blade sets includes at least three of the second blades, and the second blade of each of the second blade sets is on the first blade It is arranged in a stepped manner.

本創作的有益效果在於:本實用新型利用第二扇葉將流經第一扇葉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 utilizes 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 air volume of the fan. The fan noise is small and the rotation is stable.

1‧‧‧輪轂 1‧‧·wheels

2‧‧‧第一扇葉 2‧‧‧First leaf

3‧‧‧第二扇葉 3‧‧‧second leaf

4‧‧‧增量槽部 4‧‧‧Incremental groove

S‧‧‧切線距 S‧‧‧ tangent

D‧‧‧間距 D‧‧‧ spacing

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是本創作的實施例一立體結構示意圖,風向箭頭表示風的走向。 Fig. 2 is a perspective view showing the structure of the first embodiment of the present invention, and the wind direction arrow indicates the direction of the wind.

圖3是圖2中A部分放大示意圖。 Figure 3 is an enlarged schematic view of a portion A of Figure 2.

圖4是本創作的實施例二立體結構示意圖。 4 is a schematic perspective view of a second embodiment 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.

請參考圖2-3所示為本創作的實施例一,本創作一種軸流風扇的主扇葉上的扇葉風量增進結構,包括輪轂1及若干第一扇葉2,所述第一扇葉2上設有位於上、下兩相對應面的第一上弧面(圖中未標示)和第一下弧面(圖中未標示),且所述若干第一扇葉2的內側端固定於所述輪轂1;在每一所述若干第一扇葉2上開設有增量槽部4,匹配所述增量槽部4位置上設有與所述第一扇葉2連接並保持一間距D的第二扇葉3,所述第二扇葉3上設有位於上、下兩相對應面的第二上弧面(圖中未標示)和第二下弧面(圖中未標示)且所述第二扇葉3面積小於所述第一扇葉2,使所述第一扇葉2上方氣流經增量槽部4和第二扇葉3彎折流入該第一扇葉2下方的軸向氣流中。 Please refer to FIG. 2-3 for the first embodiment of the present invention. The blade air volume enhancement structure on the main fan blade of the axial flow fan includes a hub 1 and a plurality of first blades 2, and the first fan The leaf 2 is provided with a first upper curved surface (not shown) on the upper and lower corresponding surfaces and a first lower curved surface (not shown), and the inner ends of the first first blades 2 Fixed to the hub 1; an incremental groove portion 4 is defined in each of the plurality of first blades 2, and the incremental groove portion 4 is matched and disposed to be connected to the first blade 2 and held a second blade 3 of a spacing D, wherein the second blade 3 is provided with a second upper curved surface (not shown) on the upper and lower corresponding surfaces and a second lower curved surface (not shown) And indicating that the area of the second blade 3 is smaller than the first blade 2, and the airflow above the first blade 2 is bent and flows into the first blade through the incremental groove 4 and the second blade 3. 2 in the axial airflow below.

其中,所述第二扇葉3的第二下弧面與所述第一扇葉2的第一上弧面的延伸線保持一切線距S;所述第二扇葉3的第二下弧面始於所述第一扇葉2的第一上弧面;所述第二扇葉3與所述增量槽部4的形狀及尺寸相匹配。 Wherein, the second lower curved surface of the second blade 3 and the extension line of the first upper curved surface of the first blade 2 maintain a line spacing S; the second lower arc of the second blade 3 The face begins with a first upper curved surface of the first blade 2; the second blade 3 matches the shape and size of the incremental groove 4.

其中,每一所述第二扇葉3設置於所述若干第一扇葉2的位置為各不相同,設置於所述若干第一扇葉2的位置為各不相同的若干所述第二扇葉3呈陣列式地的設置,且沿所述輪轂1圓周構成若干組第二扇葉3組;每一所述第二扇葉3組包括至少3片所述第二扇葉3,且每一所述第二扇葉3組的 所述第二扇葉3於所述第一扇葉2上呈階梯式排列。 Each of the second blades 3 is disposed at a position different from the position of the plurality of first blades 2, and the positions of the plurality of first blades 2 are different from each other. The fan blades 3 are arranged in an array, and a plurality of sets of second blades 3 are formed along the circumference of the hub 1; each of the second blades 3 includes at least 3 of the second blades 3, and Each of the second fan blades 3 The second blades 3 are arranged in a stepped manner on the first blade 2 .

參考圖4所示為本創作的實施例二,其中,每一所述第二扇葉3設置於所述若干第一扇葉2的位置為相一致,也就是所有第二扇葉3在每一第一扇葉2上的位置是相同的,並且形成與所述輪轂1構成同心圓。 Referring to FIG. 4, a second embodiment of the present invention is shown, wherein each of the second blades 3 is disposed at a position corresponding to the plurality of first blades 2, that is, all the second blades 3 are in each The positions on a first blade 2 are identical and form a concentric circle with the hub 1.

本創作利用第二扇葉3將流經第一扇葉2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 present invention uses the second blade 3 to bend the airflow flowing through the first upper arc surface of the first blade 2 into the second lower arc surface, so that the axial airflow generated by the lower arc surface can effectively increase the air volume of the fan. . The fan noise is small and the rotation is stable.

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‧‧‧第一扇葉 2‧‧‧First leaf

3‧‧‧第二扇葉 3‧‧‧second leaf

4‧‧‧增量槽部 4‧‧‧Incremental groove

Claims (7)

一種軸流風扇的主扇葉上的扇葉風量增進結構,包括輪轂及若干第一扇葉,所述第一扇葉上設有位於上、下兩相對應面的第一上弧面和第一下弧面,且所述若干第一扇葉的內側端固定於所述輪轂,其特徵在於:在每一所述若干第一扇葉上開設有增量槽部,匹配所述增量槽部位置上設有與所述第一扇葉連接並保持一間距的第二扇葉,所述第二扇葉上設有位於上、下兩相對應面的第二上弧面和第二下弧面且所述第二扇葉面積小於所述第一扇葉,使所述第一扇葉上方氣流經增量槽部和第二扇葉彎折流入該第一扇葉下方的軸向氣流中。 A blade air volume enhancement structure on a main fan blade of an axial flow fan, comprising a hub and a plurality of first blades, wherein the first fan blade is provided with a first upper arc surface on the upper and lower opposite surfaces and a first a curved surface, wherein the inner ends of the first plurality of first blades are fixed to the hub, wherein each of the plurality of first blades is provided with an incremental groove portion matching the incremental groove a second blade connected to the first blade and maintaining a spacing, wherein the second blade is provided with a second upper surface and a second lower surface corresponding to the upper and lower surfaces a curved surface and the second blade area is smaller than the first blade, so that the airflow above the first blade is bent into the axial airflow below the first blade through the incremental groove portion and the second blade in. 如申請專利範圍第1項所述之軸流風扇的主扇葉上的扇葉風量增進結構,其中所述第二扇葉的第二下弧面與所述第一扇葉的第一上弧面的延伸線保持一切線距。 The blade air volume enhancement structure on the main fan blade of the axial flow fan according to claim 1, wherein the second lower arc surface of the second blade and the first upper arc of the first blade The extension of the face maintains all line spacing. 如申請專利範圍第1項所述之軸流風扇的主扇葉上的扇葉風量增進結構,其中所述第二扇葉的第二下弧面始於所述第一扇葉的第一上弧面。 The blade air volume enhancement structure on the main fan blade of the axial flow fan according to claim 1, wherein the second lower arc surface of the second blade starts from the first of the first blade Curved surface. 如申請專利範圍第1項所述之軸流風扇的主扇葉上的扇葉風量增進結構,其中所述第二扇葉與所述增量槽部的形狀及尺寸相匹配。 The blade air volume enhancement structure on the main fan blade of the axial flow fan according to claim 1, wherein the second blade matches the shape and size of the incremental groove portion. 如申請專利範圍第1項所述之軸流風扇的主扇葉上的扇葉風量增進結構,其中每一所述第二扇葉設置於所述若干第一扇葉的位置為相一致或各不相同。 The blade air volume enhancement structure on the main fan blade of the axial flow fan according to claim 1, wherein each of the second blades is disposed at the position of the plurality of first blades to be identical or Not the same. 如申請專利範圍第5項所述之軸流風扇的主扇葉上的扇葉風量增進結構,其中設置於所述若干第一扇葉的位置為各不相同的若干所述第二扇葉呈陣列式地的設置,且沿所述輪轂圓周構成若干組第二扇葉組。 The blade air volume enhancement structure on the main fan blade of the axial flow fan according to claim 5, wherein the positions of the plurality of first blades are different for each of the second blades Arranged in an array, and a plurality of sets of second blade sets are formed along the circumference of the hub. 如申請專利範圍第6項所述之軸流風扇的主扇葉上的扇葉風量增進結構,其中每一所述第二扇葉組包括至少3片所述第二扇葉,且每一所述第二扇葉組的所述第二扇葉於所述第一扇葉上呈階梯式排列。 A blade air volume enhancement structure on a main fan blade of an axial flow fan according to claim 6, wherein each of the second blade group includes at least three of the second blades, and each The second blade of the second blade group is arranged in a stepwise manner on the first blade.
TW104220847U 2015-11-03 2015-12-25 Primary fan blade capacity enhancement structure of axial flow fan TWM529077U (en)

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TWI792698B (en) * 2021-11-19 2023-02-11 圓方應用材料有限公司 Airflow multiplier blade structure

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