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    • 3. 发明授权
    • Compressor impeller with stress riser
    • 压缩机叶轮与应力提升
    • US07001155B2
    • 2006-02-21
    • US10439075
    • 2003-05-14
    • Jose CabralesGerald Duane LaRueJohn M. WilsonAngus Lemon
    • Jose CabralesGerald Duane LaRueJohn M. WilsonAngus Lemon
    • F04B35/00
    • F01D21/045F01D5/025F01D5/048F04D25/04F04D29/266F05D2250/281F05D2260/941
    • A compressor impeller for use with a boreless turbocharger is provided in accordance with this invention. The compressor impeller comprises an integral hub projecting axially therefrom that includes a partial bore therein that extends from an open to a close bore end. The bore includes a threaded portion that is configured to accommodate threaded engagement with an end of a common shaft disposed through a turbocharger housing and attached at an opposite end to a turbine wheel. The hub is specially configured so that the threaded portion has a relatively increased wall thickness when compared to a remaining portion of the bore disposed between the threaded portion and the end of the bore. The bore is configured providing a section having a reduced wall thickness, between the threaded portion and the bore closed end, for purposes of providing a preferential stress relief mechanism. Configured in this manner, the compressor impeller operates to ensure that, in the event of a stress-related compressor impeller failure, the shaft will be contained in its proper placement within the turbocharger.
    • 根据本发明提供了一种与无孔涡轮增压器一起使用的压缩机叶轮。 压缩机叶轮包括从其轴向突出的整体式轮毂,其包括其中从一开放到一孔径端延伸的部分孔。 所述孔包括螺纹部分,所述螺纹部分被配置为容纳与通过涡轮增压器壳体设置的公共轴的端部的螺纹接合,并且在相对端附接到涡轮机叶轮。 轮毂是特别构造的,使得与设置在螺纹部分和孔的端部之间的孔的剩余部分相比,螺纹部分具有相对增加的壁厚。 为了提供优先的应力消除机构,孔被配置成在螺纹部分和孔封闭端之间提供具有减小的壁厚的部分。 以这种方式配置,压缩机叶轮操作以确保在压力相关的压缩机叶轮故障的情况下,轴将被包含在其在涡轮增压器内的适当位置。