JPH0269097U

JPH0269097U -

Info

Publication number: JPH0269097U
Application number: JP14765188U
Authority: JP
Priority date: 1988-11-11
Filing date: 1988-11-11
Publication date: 1990-05-25

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例における遠心送風機
の羽根車の断面図、第２図は第１図のＣ―Ｃ線断
面図、第３図は第１図のＤ―Ｄ線断面図、第４図
は従来の遠心送風機の羽根車の断面図、第５図は
第４図のＡ―Ａ線断面図、第６図は第４図のＢ―
Ｂ線断面図である。７……羽根板、７ａ……羽根板の回転方向面、
７ｂ……羽根板の反回転方向面、８……主板、９
……側板、１０……吸込口、ｈ_１……羽根板の回
転方向面の上端部高さ、ｈ_２……羽根板の反回転
方向面の上端部高さ。 FIG. 1 is a sectional view of an impeller of a centrifugal blower according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line CC in FIG. 1, and FIG. 3 is a sectional view taken along the line DD in FIG. Fig. 4 is a cross-sectional view of the impeller of a conventional centrifugal blower, Fig. 5 is a cross-sectional view taken along line A--A in Fig. 4, and Fig. 6 is a cross-sectional view taken along line B-- in Fig. 4.
It is a sectional view taken along the B line. 7... Vane plate, 7a... Rotation direction surface of the vane plate,
7b... Counter-rotation direction surface of the vane plate, 8... Main plate, 9
...Side plate, 10...Suction port, _h1 ...Height of the upper end of the plane in the rotational direction of the blade plate, _h2 ...Height of the upper end of the plane in the counter-rotation direction of the blade plate.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

複数の羽根板と、前記羽根板を固定した主板と
、前記羽根板の反主板側端面に固定した側板とで
羽根車を構成し、前記側板の吸込口径を前記羽根
板の羽根入口径より大きくし、さらに吸込口径よ
り内径側の羽根板を羽根車の回転軸と平行な平面
で切断した断面形状について、羽根車の回転方向
面の上端部高さｈ_１を反回転方向面の上端部高さ
ｈ_２より大きくした遠心送風機。 An impeller is constituted by a plurality of blade plates, a main plate to which the blade plates are fixed, and a side plate fixed to an end surface of the blade plate opposite to the main plate, and the suction aperture of the side plate is larger than the blade inlet diameter of the blade plate. Furthermore, regarding the cross-sectional shape of the blade plate on the inner diameter side of the suction port cut along a plane parallel to the rotational axis of the impeller, the height _h1 of the upper end of the impeller in the rotation direction is defined as the height of the upper end of the counter-rotation direction. Centrifugal blower larger than _h2 .