公开(公告)号：US09297272B2

公开(公告)日：2016-03-29

申请号：US13658887

申请日：2012-10-24

Applicant: United Technologies Corporation

Inventor： Lee Drozdenko ,  Allan R. Penda

IPC: F01D5/30 ,  F01D21/14 ,  F04D29/02 ,  F04D29/32

CPC classification number: F01D21/14 ,  F01D5/3007 ,  F04D29/023 ,  F04D29/322 ,  F05D2220/36 ,  F05D2260/95 ,  F05D2300/121 ,  F05D2300/133 ,  F05D2300/50 ,  F05D2300/614

Abstract: A fan rotor includes a rotor body with at least one slot receiving a fan blade. The fan blade has an outer surface, at least at some areas, formed of a first material and an airfoil extending from a dovetail. The dovetail is received in the slot. A spacer is positioned radially inwardly of the dovetail biasing the fan blade against the slot. The spacer includes a grounding element, which is in contact with a portion of the dovetail formed of a second material that is more electrically conductive than the first material. The grounding element is in contact with a rotating element that rotates with the rotor. The rotating element is formed of a third material. The first material is less electrically conductive than the third material. The grounding and rotating elements form a ground path from the portion of the dovetail into the rotor.

Abstract translation: 风扇转子包括具有容纳风扇叶片的至少一个槽的转子体。 风扇叶片至少在某些区域具有由第一材料形成的外表面和从燕尾形延伸的翼型件。 燕尾接收在槽中。 间隔件位于燕尾径向向内的位置，将风扇叶片偏置在狭槽上。 间隔件包括接地元件，该接地元件与由第二材料形成的燕尾形部分接触，该第二材料比第一材料更具导电性。 接地元件与转子一起旋转的旋转元件接触。 旋转元件由第三材料形成。 第一种材料比第三种材料导电性差。 接地和旋转元件形成从燕尾的部分到转子的接地路径。