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风扇叶片设计方法哪位知道?

浏览:56次 | 提问时间: 08-03 08:13
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3个答案
世俗眼光 08-03 08:14

你好!  扇叶最难做,三个叶片,120度的角度,要做到平衡很难的,如果做得不平衡,在旋转的过程中,会增加阻力,引起马达发热发烫,费电,说不定马达也要烧毁。  主要是掌握以下几点:  1、叶片大小要一致、重量一致;  2、每片叶子偏转角度一致;  3、安装角度及等距要一致。  制作方法:用两块长方型的铁片向两个不同的方向扭30度左右就行了然后把两块交叉重叠在一一起就行了。  希望能帮到你!

你以为我有多坚强 08-03 08:22

1、斜角叶片向下不停的旋转使得空气不断流动产生负压,形成风道   另外所有的风扇都是奇数数量的叶片,避免偶数页片产生的共振。2、吊扇的扇叶一般是3片,台扇的扇叶一般是5片,常见的风扇扇叶的截面一般呈曲线。风扇的扇叶宽窄和角度是有设计的,要看电机的负荷功率而定。3、如果不考虑电机功率只看转速一定的话,更要看扇叶的角度,如果扇叶的角度一样当然是扇叶宽的风大。而且扇叶的设计和制作都呈现为规则性的对称结构,这样的话能够产生均匀和稳定的风源。常见的有页扇有三页扇,四页扇,五叶扇,双层扇等。希望我的回答能帮到您

辉煌时万众人拥你如女王 08-03 08:30

其实关于无叶片风扇的所有问题,都可以归结为一个问题,那就是,风是从哪里来的?风最开始是从圆环中间的细微风槽中“*”出来的:无叶片风扇顶着的那个硕大圆环,并非完全是噱头,而是一个重要的组成,它的中央,开着一条1毫米宽的细缝,而风,最开始就由基座中的涡*风扇,抽取底座旁的空气从这里*出来的。  当然,你可不能指望1毫米宽的细缝就能*出平稳且足够多的风来。这就涉及第二个问题了,关于这台无叶片风扇的名字,空气放大器,Air         Multiplier——什么意思,它是怎么“放大”空气的?这涉及两个物理名词,首先是雾沫夹带         (Entrainment),其意思简单地说,就是当有一束气流急速通过时,它会拉扯周围的空气,将它们跟着它一起运动。对此,你可以想象招聘会中的人潮,周围的人总是身不由己地跟着大部队前进,哈哈。具体到无叶片风扇,当气流从1毫米宽的细缝以55英里的时速*出时,它将夹带着周边的空气一起向前;其次是负压,这个不难理解,空气都往前了,圆环后的气压会降低,并导致后方更多的空气加入以平衡气压——在这两个物理名词的作用下,空气,或者说无叶片风扇的风量,被显著放大,达到涡*风扇本身抽取量的15倍。  最后一个问题,它如何保持气流平稳?因为问题二的描述,看上去似乎很难控制啊?这就涉及第三个物理名词了,雷诺数         (Reynolds         number)。不过,在解释这是什么之前,我们先去厨房看看水龙头,对,请把水龙头拧开放水,一般来说,当水龙头半开时,水流总是相对平稳,成束状从水管中涌出;而一旦你全开或者减少拧开的程度,水流就不老实了,水花会开始四溅——这个现象,简单地说就是,流体的形状,大致地和其本身的粘度、初始孔径等有关。为此,物理学家们找到了一个计算公式,而其结果就是雷诺数。具体到无叶片风扇,经研究发现,当空气在正常的粘度和温度、气压等条件下,1毫米宽的缝隙,刚好可以让气流在*出后不会发生紊乱,保持平稳~  以上就是无叶风扇的基本原理了,如果要热风的话,那就加装一个发热丝就行了,就像电*风一样的那种。

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