To provide a centrifugal blower capable of suppressing mixing of inside air into outside air.SOLUTION: A centrifugal blower 1 includes an inside and outside air box 10, a filter 20, a fan 30, a scroll casing 50, and a separation cylinder 70. The filter 20 has an overlapped region 20A axially overlapped to an air inlet 710 formed on an air introduction plate 71 of the separation cylinder 70, and a non-overlapped region 20B not axially overlapped to the air inlet 710. A part of an air inflow surface 21 of the filter 20 is covered with a structure composed of a communication-side receiving portion 17c of the inside and outside air box 10 and a communication seal portion 154a. The structure composed of the communication-side receiving portion 17c and the communication seal portion 154a is positioned at the air inflow surface 21 side of the filter 20 so that an axial overlapped area of the overlapped region 20A is larger than the non-overlapped region 20B in a two-layered mode.SELECTED DRAWING: Figure 1

    【課題】外気への内気の混入を抑制可能な遠心送風機を提供する。【解決手段】遠心送風機1は、内外気箱10、フィルタ20、ファン30、スクロールケーシング50、分離筒70を備える。フィルタ20は、分離筒70の空気導入板71に形成された空気入口710と軸方向に重複する重複領域20A、空気入口710と軸方向に重複しない非重複領域20Bを有する。フィルタ20における空気流入面21の一部は、内外気箱10の連通側受部17cおよび連通シール部154aからなる構造体によって覆われている。連通側受部17cおよび連通シール部154aからなる構造体は、二層モード時に、非重複領域20Bよりも重複領域20Aの方が軸方向に重なる面積が大きくなるようにフィルタ20における空気流入面21側に位置付けられる。【選択図】図1


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    Titel :

    CENTRIFUGAL BLOWER


    Weitere Titelangaben:

    遠心送風機


    Beteiligte:
    KOSAKA SHO (Autor:in)

    Erscheinungsdatum :

    2021-09-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    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 / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



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