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渦殼

渦殼作用是匯集葉輪出口氣流并引向風機出口，與此同時將氣流的一部分動能轉化為壓能。渦殼外形以對數螺旋線或阿基米德螺旋線最佳，具有最高效率。渦殼軸面為矩形，并且寬度不變。

渦殼出口處氣流速度仍然很大，為了有效利用氣流的能量，在渦殼出口裝擴壓器，由于渦殼出口氣流受慣性作用向葉輪旋轉方向偏斜，因此擴壓器一般作成沿偏斜方向擴大，其擴散角通常為6。～8。，如圖4-3所示。

離心風機渦殼出口部位有舌狀結構，一般稱為渦舌（圖4-3）。渦舌可以防止氣體在機殼內循環流動。一般有渦舌的風機效率，壓力均高于無舌的風機。

濕簾墻、東莞降溫濕簾、濕簾降溫原理、降溫濕簾價格、濕簾風機降溫系統

Jigsaw can't stop a sad face, leaning against the cage, snuggling in sand cotton blue covers, in succession to tears. Her sister-in-law hurriedly stood up, rushed, two hands hold her hand, a call girl. Cao Danian also can not help but raise the sleeves to rub eyes. Jigsaw that only empty hand to solve the box cover on the buttons, solution and buckle, just not be opened mouth. She went back to her brother one way: "you do something! Japanese company said, see his sister's face, like the mouth of the bottle gourd like saw! " Jigsaw fibrillation channel: " don't blame him for anything -- where he has a face to me! " To her brother said: " I know your life is not going to the door! You got me good! You throw a collapse in one go, I can't walk. You can leave me to die.
濕簾墻、東莞降溫濕簾、濕簾降溫原理、降溫濕簾價格、濕簾風機降溫系統