公开(公告)号：US10378550B2

公开(公告)日：2019-08-13

申请号：US14772149

申请日：2012-12-18

Applicant: KOREA AEROSPACE RESEARCH INSTITUTE

Inventor： Byeung Jun Lim ,  Tae Choon Park ,  Young Seok Kang

IPC: F02D27/00 ,  F04D27/02 ,  F04D29/52 ,  F04D29/68 ,  F04D19/00 ,  F04D27/00

Abstract: An apparatus for preventing an axial-flow compressor from stalling by employing a casing treatment includes an outer casing having an inner wall with a slot formed to face a rotor blade, an inner casing moveable so as to open the slot in an unstable operating region and close the slot of the outer casing in a stable operating region, and a drive means for moving the inner casing along the axial direction of the outer casing. Thus, the apparatus can be applied not only to a casing treatment structure where the slope of a slot does not vary with the rotational position of the rotor, but also to a casing with a variously shaped slot such as a radial slot or an axial skewed slot.