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    • 3. 发明公开
    • Flared tip fan blade and method of manufacturing same
    • Lüfterschaufelmit ausgestellter Spitze und Herstellungsverfahrendafür
    • EP2402617A2
    • 2012-01-04
    • EP11171437.4
    • 2011-06-27
    • SPX Cooling Technologies Inc.
    • Lewis, Robert
    • F04D29/38B21C23/16B21K3/04B23P15/02
    • F04D29/384B21C23/16F04D29/388Y10T29/49336
    • A fan blade assembly is provided. The fan blade assembly (10) may include: a fan blade (36) having an airfoil shaped section, formed by being run lengthwise though a die and a flap portion integral with the airfoil section also run lengthwise through the die, the fan blade having a hub end and a tip end, a tapering trailing edge on a trailing edge of the fan blade defined by removing a portion of the trailing edge of the fan blade after it has been run through the die, the tapering trailing edge defining the fan blade (36) to be narrower moving from the hub end toward the tip end, and a flared portion interrupting the tapering trailing edge near the tip end, the flared portion defining the fan blade to become wider from the beginning of the flared portion to the tip end. A method for making a fan blade may also be provided.
    • 提供风扇叶片组件。 风扇叶片组件(10)可以包括:风扇叶片(36),其具有翼形截面,通过纵向延伸通过模具形成,并且与翼型部分成一体的翼片部分也沿纵向延伸穿过模头,风扇叶片具有 轮毂端和尖端,在风扇叶片的后缘上的锥形后缘,其通过在风扇叶片已经穿过模具之后去除风扇叶片的后缘的一部分而限定,锥形后缘限定风扇叶片 (36)从轮毂端向前端移动较窄,并且扩张部分中断尖端附近的锥形后缘,限定风扇叶片的扩口部分从扩张部分的开始变宽到尖端 结束。 还可以提供制造风扇叶片的方法。