Patent ID: 9234459
Filing Date: 2016-01-12
CPC Classification: F01D,F02C,F05D

Claim Text:
1. A wheel housing for a turbocharger comprising: a first structural body; a second structural body that is formed separately from the first structural body and that is joined to the first structural body; and a gas passageway formed between the first structural body and the second structural body, wherein: a joint portion between the first structural body and the second structural body is provided with a corner portion that is formed by a first surface of the first structural body which faces the gas passageway and a second surface of the second structural body which faces the gas passageway; a guide portion that is shaped to change a direction of flow of a gas along the first surface to a direction along the second surface is formed on the corner portion; the first structural body is joined to the second structural body by brazing; and the guide portion is a fillet that is formed by the brazing, wherein: the first structural body is a scroll body that is made of a press-formed metal sheet and that includes a scroll-shaped site; the second structural body is a base body that includes: a cylindrical portion fitted to an outlet flange, a flange portion, and a housing portion in which a turbine wheel is housed, wherein the housing portion connects the cylindrical portion to the flange portion; and the gas passageway is formed between an inner peripheral surface of the scroll-shaped site of the scroll body and an outer peripheral surface of the flange portion of the base body.