A centrifugal blower (1) is provided with: an inside/outside air box (10); an impeller (30); a scroll casing (50); a bell mouth (60); a separation cylinder (70); and a partition (57) that partitions a ventilation path (53) inside the scroll casing into first and second ventilation paths (531, 532). The scroll casing has a nose part (Ps) where the scroll diameter is smallest and a winding end part (Pe) where the scroll diameter is largest. If a suction port is divided into front and rear half regions (62, 63) by a basis line (Lb) passing through a rotary shaft and the nose part, an air introduction part is disposed so that an area overlapping the front half region in an axial direction is larger than that overlapping the rear half region. At least a part of an outer peripheral wall is formed such that a spread angle (alpha 1) from the nose part to an intermediate part (Pm) set between the nose part and the winding end part is larger than a spread angle (alpha 2) from the intermediate part to the winding end part.

    一种离心送风机(1),具备内外气箱(10)、叶轮(30)、涡形壳体(50)、喇叭口部(60)、分离筒(70)以及分隔部(57),该分隔部(57)将涡形壳体内侧的通风路(53)分隔为第一通风路(531)和第二通风路(532)。涡形壳体具有涡旋径最小的鼻部(Ps)和涡旋径最大的卷绕结束部(Pe)。由通过旋转轴和鼻部的基准线(Lb)将吸入口分为前半区域(62)和后半区域(63)。空气导入部配置为在轴向上与前半区域重合的面积比与后半区域重合的面积大。并且,外周壁的至少一部分的从鼻部到设定于鼻部与卷绕结束部之间的中间部(Pm)的展开角(α1)比从中间部到卷绕结束部的展开角(α2)大。


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    Title :

    CENTRIFUGAL BLOWER


    Additional title:

    离心送风机


    Contributors:
    KOSAKA SHO (author) / ODA SHUZO (author)

    Publication date :

    2021-11-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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