| 主权项 |
1. A turbocharger comprising:
a compressor housing provided therein with an air flow path in which an impeller is placed; and a bearing housing rotatably supporting a rotor shaft having one end to which the impeller is fixed, wherein the air flow path comprises an intake port for sucking air to the impeller, and a discharge scroll chamber formed on an outer circumferential side of the impeller in a circumferential direction to guide compressed air discharged from the impeller to the outside, the compressor housing comprises a shroud surface opposed to the impeller, and a diffuser surface extending from the shroud surface toward the discharge scroll chamber, the bearing housing comprises an opposite surface opposed to the diffuser surface of the compressor housing and forming a diffuser passage between the opposite surface and the diffuser surface, each of the diffuser surface of the compressor housing and the opposite surface of the bearing housing is provided with an adhesion preventing part for preventing adhesion of deposits, the adhesion preventing part comprises a surface forming part having a multitude of fine ejection holes open to the diffuser passage, and a tank part covered with the surface forming part from a side of the diffuser passage, and is configured so as to eject air from the tank part through the ejection holes of the surface forming part to the diffuser passage, the compressor housing and the bearing housing comprise air supply passages for supplying air to the tank parts, and at least one of the compressor housing and the bearing housing comprises a depurant injection port for supplying a depurant compatible with the deposit to the tank part through the air supply passage. |
