Centrifugal compressor
A centrifugal compressor includes: a housing including an intake flow path; a compressor impeller arranged in the intake flow path; a movable portion arranged upstream of the compressor impeller in a flow of an intake air; and a groove formed in an area other than a surface located on a downstream side in the flow of the intake air in the movable portion.
1. A centrifugal compressor comprising:
a housing including an intake flow path;
a compressor impeller arranged in the intake flow path;
a movable portion arranged upstream of the compressor impeller in a flow of an intake air; and
a groove formed in an area other than a surface located on a downstream side in the flow of the intake air in the movable portion,
wherein the movable portion includes a pair of parallel surfaces that face each other in an axial direction or in a radial direction of the compressor impeller and define the groove.
2. The centrifugal compressor according to claim 1 , wherein the groove is formed on a surface located on an upstream side in the flow of the intake air in the movable portion.
3. The centrifugal compressor according to claim 1 , wherein the groove is formed on a radial outer surface in the movable portion.
4. The centrifugal compressor according to claim 1 , wherein the groove extends in a circumferential direction of the compressor impeller.
5. The centrifugal compressor according to claim 2 , wherein the groove extends in a circumferential direction of the compressor impeller.
6. The centrifugal compressor according to claim 3 , wherein the groove extends in a circumferential direction of the compressor impeller.
7. The centrifugal compressor according to claim 1 , wherein the movable portion is arranged in an accommodation groove provided in housing.