Drainage structure and turbocharger

A drainage structure comprising:

• a main body including an intake flow path;
• a compressor impeller disposed in the intake flow path;
• an accommodation chamber formed in the main body at a position upstream of the compressor impeller in a flow of an intake air;
• a movable member disposed in the accommodation chamber, the movable member being movable to a throttle position where the movable member protrudes into the intake flow path and to a retracted position where the movable member does not protrude into the intake flow path;
• and
• a connecting passage connected to the accommodation chamber,
• wherein the connecting passage fluidly communicates with the intake flow path at a position of the intake flow path upstream of the accommodation chamber, and wherein the connecting passage comprises an outlet, and a position of the outlet is vertically below a position of the connecting passage connected to the accommodation chamber.