US 12,247,573 B2
Centrifugal compressor and turbocharger
Atsushi Yonemura, Tokyo (JP); Ryota Sakisaka, Tokyo (JP); Yoichi Sato, Tokyo (JP); Ryosuke Inomata, Tokyo (JP); and Taiki Kanzawa, Tokyo (JP)
Assigned to IHI Corporation, Tokyo (JP)
Filed by IHI Corporation, Tokyo (JP)
Filed on Aug. 2, 2023, as Appl. No. 18/363,894.
Application 18/363,894 is a continuation of application No. PCT/JP2022/006328, filed on Feb. 17, 2022.
Claims priority of application No. 2021-096936 (JP), filed on Jun. 9, 2021.
Prior Publication US 2023/0375004 A1, Nov. 23, 2023
Int. Cl. F04D 27/02 (2006.01); F04D 17/10 (2006.01); F04D 29/28 (2006.01); F04D 29/44 (2006.01)
CPC F04D 27/0253 (2013.01) [F04D 17/10 (2013.01); F04D 29/284 (2013.01); F04D 29/441 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A centrifugal compressor comprising:
a housing including an intake flow path;
a compressor impeller arranged in the intake flow path and including a plurality of blades;
an accommodation chamber formed upstream of the blades in a flow of intake air in the housing;
a movable member arranged in the accommodation chamber and movable to a protruding position where the movable member protrudes into the intake flow path and to a retracted position where the movable member is retracted from the intake flow path; and
one or more grooves formed over an edge between an inner circumferential surface and a first side face closer to the blades in the movable member,
wherein an end of the one or more grooves on the inner circumferential surface in an axial direction of the compressor impeller does not reach a second side face of the movable member opposite to the first side face.