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    • 1. 发明公开
    • Axial fan
    • 轴流风扇
    • EP1845268A1
    • 2007-10-17
    • EP07075273.8
    • 2007-04-11
    • Howden Netherlands B.V.
    • Olthof, Henricus Johannes BernardusCipelletti, GiorgioVan der Spek, Hendrik Fedde
    • F04D29/34F04D29/36
    • F04D29/34F04D29/36
    • The invention relates to an axial fan (50) comprising a boss (51) and a number of blades (52) evenly distributed and arranged to the boss (51), wherein the blades (52) have an aerofoil profile,
      each blade (52) is arranged to the boss (51) with a strip (53),
      wherein each blade is hollow and the strip (53) is at least partially inserted into the blade, and that
      at least one fastener (58) runs from the surface of the blade (52) through a corresponding opening (56) in the strip to the opposite surface of the blade,
      wherein the corresponding opening (56) in the strip (53) is a slot, such that the pitch of the blade is adjustable, by rotation of the blade (52) relative to the strip (53) along the axial axis of the blade.
    • 本发明涉及一种包括凸台(51)和均匀分布并布置在凸台(51)上的多个叶片(52)的轴流风机(50),其中叶片(52)具有翼型轮廓,每个叶片 )通过带(53)布置到凸台(51)上,其中每个刀片是中空的并且带(53)至少部分地插入到刀片中,并且至少一个紧固件(58)从表面 刀片52通过带材中的相应开口56到达刀片的相对表面,其中条带53中的相应开口56是槽,使得刀片的节距可调, 通过叶片(52)沿着叶片的轴向轴线相对于条带(53)的旋转。