| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor housing for a supercharger, which is excellent in productivity and capable of reducing cost and improving performance.SOLUTION: A compressor housing 1 for a supercharger includes an air-intake port 11 for sucking air toward an impeller 5; and a discharge scroll chamber 12 for leading the air discharged from the impeller 5 to the outside. The compressor housing further includes: a scroll piece 2 that includes an air-intake port forming part 21, a scroll wall surface forming part 22 and a scroll outer peripheral part 23; a shroud piece 3 that includes a shroud press-fitting part 31 and a shroud wall surface forming part 32; and an outer peripheral wall piece 4 that includes an outer peripheral annular press-fitting part 41 and an outer peripheral annular wall surface forming part 42. The outer peripheral wall piece 4 has a shape in which the size in an axial direction of the outer peripheral annular wall surface forming part 42 gradually gets bigger along a circumferential direction. |
